CN106346589A

CN106346589A - Method for manufacturing anti-insect and anti-mold oriented strand board with full eucalyptus leftover materials

Info

Publication number: CN106346589A
Application number: CN201610746810.0A
Authority: CN
Inventors: 陈正照
Original assignee: Guangxi Hengxian Xinweilin Plate Industry Co Ltd
Current assignee: Guangxi Hengxian Xinweilin Plate Industry Co Ltd
Priority date: 2016-08-29
Filing date: 2016-08-29
Publication date: 2017-01-25

Abstract

The invention discloses a method for manufacturing an anti-insect and anti-mold oriented strand board with full eucalyptus leftover materials. The manufacturing method comprises the following steps of: preparing materials, drying, peeling and removing impurities, sorting and storing, respectively gluing on a surface core layer, hierarchically paving, in advance hot press molding, and sanding wood finishes; an isocyanate sawdust powder hybrid adhesive is coated on the surface, and an anti-insect and anti-mold composite urea-formaldehyde resin adhesive is coated on the core layer; wood shavings on the core layer are divided into three-layer structures, comprising intermediate layer of core layer, upper surface layer of core layer and lower surface layer of core layer; the intermediate layer of the core layer is paved longitudinally, and the upper surface layer of the core layer and the lower surface layer and surface layer of the core layer are paved horizontally. For the oriented strand board prepared by the method, the static bending intensity in a parallel direction is in a scope of 33-39 MPA, the parallel elasticity modulus is in the scope of 4614-4779 MPA, the vertical elasticity modulus is in the scope of 1504-1771 MPA, the thickness swelling rate of water absorption in 24 h is in the scope of 10%-17%, and the vertical nail-holding power reaches up to 89000N. In the manufacturing method, a problem that the board is easy to suffer from erosion of white ants and moths is thoroughly solved by adding an anti-insect and anti-mold additive, and the service life of the board is prolonged.

Description

The method that full Eucalyptus leftover pieces produce Vermins-proof mildew-proof oriented wood chipboard

Technical field

The invention belongs to wood-based plate manufactures field, particularly a kind of full Eucalyptus leftover pieces produce Vermins-proof mildew-proof oriented wood chipboard Method.

Background technology

Oriented wood chipboard is one of particieboard new varieties.Wood shavings mat formation molding when, two top layers up and down of oriented wood chipboard Glue mixing wood shavings are pressed its machine direction stringer arrange, and sandwich layer wood shavings are transversely arranged, form three-decker plate embryo, and then hot pressing Become oriented wood chipboard.The wood shavings shape need length-width ratio of this particieboard is larger, and thickness is more thick than the wood shavings of ordinary particle board.

Oriented wood chipboard is that log is cut into the flaking with certain geometrical shape, flaking chi through peeling, along grain direction Very little usually long 40～140 mm, wide 5～20 mm, thick 0.40～0.60 mm, then drying simultaneously apply synthetic resin gum And waterproofing agent, the fiber direction of simulation natural timber is oriented mat formation into slab after, then one kind made through high temperature hot pressing Artificial engineering structural panel.

The shape of oriented wood chipboard watch core layer wood shavings, size are the same, simply adopt orienting spreading, and sandwich layer wood shavings are laterally arranged Row, top layer wood shavings longitudinal arrangement, watch core layer wood shavings form certain orientation angle, so that the mechanics of oriented wood chipboard all directions Performance is identical, and the orienting spreading of oriented wood chipboard makes oriented wood chipboard have intensity height, good stability of the dimension, good processability The features such as, the advantage of plywood and ordinary particle board is united two into one, the wooden unit both having merged plywood is longer, level divides Feature bright, arranged in a uniform, has drawn the spy that the ordinary particle board course of processing is simple and easy to operate, be produced on a large scale simultaneously again Point, often replaces plywood to do structural wood and uses.

The raw material making oriented wood chipboard includes wood particulate, adhesive and additive, and wood particulate accounts for sheet material dry weight More than 90%, adhesive and additive account for 10% about；Taking from forest zone thinnings wood particulate, (diameter is generally 8 for small dimension wood more Below centimetre), logging residue and wood machining residues etc..Wood particulate includes slabbing, strip, needle-like, granular wood Piece, wood shavings, wood wool, sawdust etc..Use modified urea-formaldehyde resin glue or melamine glue adhesive more, or two brood lac are used in conjunction with.

Shaving shape is the deciding factor of oriented wood chipboard quality, therefore first has to produce qualified wood shavings.Timber In processing, the wood shavings of residue can be used as the sandwich layer of particieboard through reprocessing.Top layer wood shavings are mainly used senior in felling or processing The special processing of residue (timber butt, edges of boards etc.) is produced.The length of wood shavings, thickness, wide dimensions because of production method and are used for Make sandwich layer or top layer etc. and different.The process equipment preparing wood shavings has wood chipping equipment, desintegrator, polisher and defibrator, cuts The mode of cutting has cutting, cut-out and crushes.For obtain high-quality wood shavings, through just broken, polishing, broken again and screening etc. process.

Manufactured goods oriented wood chipboard does not need after drying, can directly use, and sound-absorbing and sound insulation value are also fine.But it Also have the shortcomings that it is intrinsic, because edge roughness, easy moisture absorption, so just seem special with the edge sealing of furniture technique of particle boards to manufacturing Unimportant.Larger additionally, due to particieboard volume, use its Hepplewhite, for other sheet materials, also heavier.

In recent years, the Guangdong and Guangxi Provinces of south China, Yunnan, Fujian, Guizhou, Hainan etc. save and start to introduce a fine variety by the state-owned east gate in Guangxi woods The fast-growing Eucalyptuss kind with Guangdong is cultivated in field, and fast-growing Eucalyptus is a kind of leaf wood of light color, and wood grain is tight and irregular, sapwood layer ratio Wider, in white to pale pink；The light brown red that heartwood has.Fast-growing eucalyptus globuluss fast growth, can become a useful person, hill farmer is big for 3 years at present Amount plantation, has accounted for south and can utilize more than the 50% of timber, added the such as arboreal growth such as pinaster, Cunninghamia lanceolata (Lamb.) Hook., margosa of original seeds Relatively slow, it is no longer able to haggle as wildwood and cuts down, and the timber yield of 1 mu of fast-growing eucalyptus globulus is equivalent to more than 5 mu of natural forest products Amount, Eucalyptuss only account for the 13.7% of forest in Guangxi area, but solve Guangxi more than 80%, the timber demand in the whole nation more than 20%.

So fast-growing eucalyptus globuluss sheet material manufacturing enterprise rapid emergence, its production method be Eucalyptuss are cut down after be peeled into plate, do With adhesive, plate is bonded into multi-layer sheet again after dry, this multi-layer sheet is also referred to as solid wood board, can be used as the office appliance of high-quality, wood The multiple use on floor, furniture and building-supporting plate, but multiple-plate production process produces substantial amounts of corner timber, either In cut-out, rotary-cut or adhesion process, all many particles can be produced, these multi-layer sheet factories, particle is burnt only as fuel, Cause the great wasting of resources.

Chinese patent discloses the method that some adopt culled wood to be raw material production oriented wood chipboard, for example:

1st, Chinese patent, application number: 201510061938.9；Applicant: Lu Li wood industry company limited of Shouguang City；Denomination of invention: One kind can facing oriented wood chipboard and its preparation technology；Summary: the present invention relates to one kind can facing oriented wood chipboard and its preparation Technique, can include sandwich layer and top layer by facing oriented wood chipboard, and core layer raw material selects remaining rotary-cut list during plywood production Plate leftover bits and pieces, top layer raw material select integrated timber, core-board, the sawdust producing in particieboard or MDF production process, wood shavings, Useless fiber, sanding powder, described raw material drying, screening, applying glue, mat formation, slab saw cut out and hot pressing after be obtained can facing orientation plane Card, the MOR of oriented wood chipboard parallel direction can reach 22～30mpa, and elastic modelling quantity can reach 3500～ 4800mpa, surface roughness be less than 0.8 μm, can be directly used for process facing, can also extensively replace plywood, core-board, The wood-based plates such as particieboard, MDF.

2nd, Chinese patent, application number: 201410578503.7；Applicant's Dieffenbacher plant equipment service (Beijing) has Limit company；Denomination of invention: a kind of oriented structure chipboard production method and system；Summary: the invention discloses a kind of orientation knot Structure wood shavings plate producing process, comprises the following steps: s10, by plywood production when the broken veneer strip veneer longitudinal shear that produces Machine carries out length section；S15, using veneer cross cut shears, broken veneer strip is entered line width section；S20, pass through primary screening Obtain the wood shavings of qualified size；S30, wood shavings are dried by drying machine；S35, sub-elect top layer wood shavings and core by postsearch screening Layer wood shavings；S40, respectively applying glue is carried out to top layer wood shavings and sandwich layer wood shavings；S45, by oriented paving machine to the wood shavings having applied glue It is oriented and mat formation；S50, using hot press, hot pressing is carried out to the slab laying；S55, by the directive construction wood shavings after hot pressing Plate cuts into specification.The present invention can produce the oriented structure chipboard of high intensity using broken veneer strip, improves timber Comprehensive utilization ratio.The invention also discloses a kind of oriented structure chipboard production system.

3rd, Chinese patent, application number: 201110084640.1；Applicant: Luli Group Co., Ltd；Denomination of invention: one Plant oriented wood chipboard and preparation technology；Summary: the invention discloses a kind of oriented wood chipboard and preparation technology, described particieboard It is three-decker by adhesive bond together, including upper and lower two top layers and a middle sandwich layer；Described preparation work Skill remaining rotary cut venner leftover bits and pieces with during plywood production, as raw material, replace path dimension stock, thus having saved a large amount of Timber, the production cost of reduction；Meanwhile, the length of oriented shaving can be lengthened by the method, thus improving oriented shaving In plate mechanical performance index so as to have higher bearing capacity；It is an advantage of the current invention that: with rotary cut venner leftover bits and pieces For raw material, thus having saved substantial amounts of timber, the production cost of reduction, the MOR of the oriented wood chipboard being produced and elasticity Modulus synchronously increases, and bearing capacity significantly improves.

Oriented wood chipboard disclosed in above-mentioned document discloses is got a foothold using rotary cut venner remaining during plywood production The method that the broken veneer strip producing when expecting for raw material or plywood production is pressed into oriented wood chipboard for raw material, but have no Using fast-growing eucalyptus globuluss production process of plate corner timber be raw material production full Eucalyptus leftover pieces oriented wood chipboard report, and not See that production has the oriented wood chipboard of Vermins-proof mildew-proof function.If because oriented wood chipboard keeps divulging information on rainy day not in time, It is easy to deform because of air humidity, or even has that mouldy, the situation such as addle, lead to indoor mould abnormal smells from the patient serious, and oriented shaving Plate majority is to be formed by adhesive bonding by Eucalyptus monolithic, sheet material can be made to stick up because producing expansive force difference after long-time moisture absorption Bent deformation.

Content of the invention

For above-mentioned technological deficiency, it is an object of the invention to provide a kind of adopt fast-growing eucalyptus plate production process Corner timber have for raw material production Vermins-proof mildew-proof function full Eucalyptus leftover pieces oriented wood chipboard method.

The technical solution used in the present invention is as follows:

The method that full Eucalyptus leftover pieces produce Vermins-proof mildew-proof oriented wood chipboard, comprises the steps:

1) by produce the leftover pieces of Eucalyptus plate through first separation metal and stone, chip, deliver to wood chip storage compartment after simple screening Carry out transition storage, then deliver to veneer longitudinal shear machine with transporter and carry out length section, above-mentioned leftover pieces are cut along longitudinal Become the wood shavings that length is 50-80 millimeter；Wood shavings after length is cut into slices are transported to veneer cross cut shears and enter line width Section, wood shavings is transversely cut into the wood shavings that width is 5-20 millimeter；Deliver in wet wood shavings feed bin through transporter again and carried out Cross storage；The water content percent by weight of wet wood shavings should be maintained at less than 20%；

Above-described produce Eucalyptus plate leftover pieces be make after rotary-cut Eucalyptus plate unavailable during many Eucalyptus laminate Waste material.

2) wet wood shavings are delivered in roller drier through transporter and are dried, and the moisture content controlling wood shavings is 3.0%- 5.0%；

3) dried wood shavings are isolated veneer；Separate metal and sandstone second；

The method of described separation veneer adopts winnower, and in winnower, veneer is blown off because proportion is less, and veneer can Using the fuel as air stove；Separate metal and sandstone adopts gravity screening machine.

4) pass through screening through dry wood shavings and sort, length 50-80 millimeter and width 5-20 millimeter watch core The dry wood shavings of layer are sent to the storage of watch core layer dry wood shavings material transitional storehouse by transporter, and more than 80 millimeters and width is more than 20 millimeters for length Wood shavings are sent to the storage of watch core layer dry wood shavings material transitional storehouse after shearing again；

5) the qualified dry wood shavings of watch core layer transport through transporter, deliver in glue mixer, using machinery after the metering of chip metering feed bin Formula glue mixing carries out applying glue respectively to top layer and sandwich layer, and top layer applies isocyanates wood powder end composite adhesive, and resin added is 4% ～8%, resin added by over dry glue to the mass ratio of over dry wood shavings on the basis of, sandwich layer apply Vermins-proof mildew-proof composite urea formaldehyde resin gluing Agent, applied amount be 3%～6%, applied amount by over dry glue to the mass ratio of over dry wood shavings on the basis of；

6) wood shavings after applying glue are delivered to mechanical classification spreading machine through belt conveyer and are mated formation top layer wood shavings and sandwich layer wood shavings, and top layer is dug Spend and longitudinally mat formation, its center core layer wood shavings is divided into 3-tier architecture, including sandwich layer intermediate layer, sandwich layer upper epidermis and sandwich layer layer, mats formation During core material, sandwich layer intermediate layer is longitudinally to mat formation, and the upper and lower surface layer of sandwich layer is mated formation sandwich layer wood shavings, for laterally mating formation, sandwich layer Upper and lower Surface pavement top layer wood shavings, obtain the particle mat of uniform ground, particle mat determined according to hot press size Size specification；

7) particle mat is carried out precompressed, the pressure of precompressed is 0.8～0.9mpa, time 5～8min；Finally carry out heat Pressure, hot pressing pressure 2.5～3mpa, temperature is 200～210 DEG C, and hot pressing time is every millimeter of thickness of slab 80s～85s, then delivers to Quenched, prepared particieboard substrate in balance storehouse；

8) the particieboard substrate of step 7) is carried out coarse sand sanding, sand falls 0.8-1.5 millimeter；Then by the particieboard base after coarse sand Plate carries out fine sand sanding, and sand falls 0.5-0.8 millimeter, obtains sanding substrate；Compound toward sanding substrate coating isocyanates wood powder end Adhesive, the thick poplar decoration panel of patch 8mm, obtain poplar skin thick china, in cold pressing pressure for 13-15 mpa carry out colding pressing 2 little Shi Hou, carries out hot-forming, hot pressing pressure 15-20mpa using hot pressing pressure machine, and temperature is 110-120 DEG C, and last fine sand is thrown Light, saws side, sorting packing, obtains Vermins-proof mildew-proof oriented wood chipboard.

Above-mentioned steps 5) and step 8) described in isocyanates wood powder end composite adhesive, be with isocyanates for this Body, will be added to Carbimide. through the wood powder end of processing according to the 10-20% that wood powder end addition is isocyanate weight In ester, after stirring, form uniform isocyanates wood powder end composite adhesive.

The course of processing at described wood powder end is: length in wood chip shear history is less than 50 millimeters and width is less than 5 The wood shavings of millimeter grind to form wood powder end, control its particle diameter to be 0.1-3 micron, and last for wood powder drying is less than to moisture content Less than 3%.

Vermins-proof mildew-proof composite urea formaldehyde resin adhesive described in step 5), is made up of the raw material of following parts by weight:

50～100 parts of cyanurotriamide modified urea resin；

20～30 parts of Oxytarch；

1～3 part of polyvinyl alcohol；

3～8 parts of hydrogenated rosin；

2～3 parts of propanediol polyoxypropylene polyvinylether；

4～6 parts of polyisocyanate；

0.5～5 part of isobutyl triethoxy silane；

5～10 parts of phenolate lignin；

100～200 parts of clear water；

2.1～4.9 parts of Vermins-proof mildew-proof agent.

Described Vermins-proof mildew-proof agent be activated carbon powder, the mixture of bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder, its part by weight according to Secondary for 2:3:1:1.

300 mesh sieves all crossed by described activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder.Activated carbon powder and the ratio of bamboo charcoal powder Surface area is big, has superpower moisture effect, with the moisture in absorption air, it is to avoid timber main body has that mouldy, the situation such as addle. Main component garlicin in Bulbus Allii have sterilization, parasite killing, removing toxic substances, anti-corrosion the effects such as；And the main component capsaicin in Fructus Capsici To the action of contace poison of insect substantially, after insect contact with capsaicin i.e. performance benumb (inertia, do not take food), paralyse finally dead The phenomenon died.Activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder are added to composite urea formaldehyde resin of the present invention as Vermins-proof mildew-proof agent In adhesive, vermins-proof effect persistently, does not affect the bonding strength of adhesive, is uniformly dispersed in adhesive, can be with glue to wood Material internal penetration, make product reach long-acting insect protected function it is often more important that, all safe and efficient low toxicity of this several material, have Certain antiseptic property.

The production method of above-mentioned Vermins-proof mildew-proof composite urea formaldehyde resin: first the clear water of parts by weight is put in reactor, plus Heat arrives 80-100 DEG C, and the hydrogenated rosin, isobutyl triethoxy silane and the propanediol polyoxypropylene that are subsequently adding parts by weight gather Vinyl Ether, stirs 10 minutes to 30 minutes, adds polyvinyl alcohol, the phenolate lignin of parts by weight, be allowed to dissolve, add The cyanurotriamide modified urea resin of parts by weight, Oxytarch and Vermins-proof mildew-proof agent, keep 80-90 DEG C of stirring reaction 2-5 little When, 10-20 minute adds the polyisocyanate of parts by weight before use, and mixing and stirring can use.

Cyanurotriamide modified urea resin of the present invention adopts Guangxi Nanning Green Park Beilin Wood Industry Co., Ltd. to study Cyanurotriamide modified urea resin, number of patent application: cn 201310353442.x；The applying date: 2013.08.14；Open (public Accuse) number: cn 103408711a；Application (patent right) people: Guangxi Nanning Green Park Beilin Wood Industry Co., Ltd., this tripolycyanamide changes Property Lauxite primary raw material be formaldehyde, tripolycyanamide and carbamide, add formaldehyde using disposable, add several times carbamide and The method of tripolycyanamide, controls reaction rate, it is to avoid the generation of gelatin phenomenon, promotes the reaction completely of formaldehyde.Repeatedly add urine Element, the carbamide adding every time is all different with the polymerization rate of formaldehyde and condition, after being divided into prepolymerization, polymerization and polymerization Phase three phases, the amount of each stage addition carbamide is different, and reaction temperature is also different, by this technique, it is to avoid The generation of polymerization process gelatin phenomenon, the Lauxite narrow molecular weight distribution of gained, residual formaldehyde is low, artificial for producing Plate, it is possible to decrease the burst size of methanal of wood-based plate.

Above-described Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, the function of each raw material is as follows:

Cyanurotriamide modified urea resin, is adhesive major ingredient.Urea-formaldehyde resin adhesive is a kind of thermosetting polymer adhesive. Due to its process is simple, raw material is cheap, and adhesive strength is high, the advantages of water white transparency, be widely used in plywood, particieboard, The industries such as medium density fibre board (MDF), the production of artificial board and interior decoration, can buy in Market of Adhesives.Band ring molecule Tripolycyanamide be introduced in Lauxite, formed tridimensional network, enclose many hydrophilic groups, change resin matrix knot Structure, promotes resin crosslinks, thus having reached the purpose of the adhesion strength, resistance to water and ageing resistance improving resin, again simultaneously Avoid the relatively costly shortcoming of simple melamine resin.

Oxytarch is that starch is acted on oxidant in acid, alkali, neutral medium, makes a kind of obtained from starch oxidation change Property starch.Oxytarch product colour is pure white, pastes transparent, good film-forming property, and freeze-thaw resistance is good, is the thickening of low viscosity high concentration Agent, is widely used in weaving, papermaking, food and Fine Chemical.Oxytarch carries more aldehyde radical and carboxyl, can be multiple During closing Lauxite polymer reaction, generate acetal and hemiacetal structure, thus improving the ageing-resistant performance of Lauxite； Simultaneous oxidation starch can be combined with the free formaldehyde in cyanurotriamide modified urea resin, can reduce free formaldehyde content；Oxidation On the other hand starch, can reduce cyanurotriamide modified urea resin addition as viscosity complexing agent again, reduce and produce Cost.

Polyvinyl alcohol, is toughener so that the oriented wood chipboard intensity produced increases.

Hydrogenated rosin is antioxidant so that the oriented wood chipboard produced is not allowed perishable, extends the life-span, prevents old Change.

Propanediol polyoxypropylene polyvinylether, is defoamer, prevents adhesive from having bubble cavity to produce during using.

Polyisocyanate is firming agent, is characterized in thering is very high wearability, and stable chemical nature, and intensity is high, The crosslinked action itself having, can improve heat-resisting, water, the plasticizer of adhesive and the performance of solvent.

Bridging agent, from isobutyl triethoxy silane, its one end can be combined with Lauxite carbonyl, and the other end can be with The hydroxy combining of starch, strengthens its plank intensity.

Lignin molecular mass after phenolate reaction reduces, and increases reaction active groups, can eliminate part free formaldehyde. The preparation method of phenolate lignin is: will be placed in separation container using the black liquid of alkaline boiling method slurrying, is removed with screen cloth Undissolved float, settles 4 hours after stirring, discharge lower floor silt, takes upper strata to contain the black liquor vacuum drying of alkali lignin Machine carries out vacuum spray drying process, obtains powdery alkali lignin；Take powdery alkali lignin to put in acidifier, add 70wt% sulphuric acid, after stirring, is warming up to 140-160 DEG C, sulfonating reaction 1-2 hour；Through standard vertical-tubes evaporation Device, circulation rate is 0.4m/s-0.5m/s, and control discharging moisture is 30wt%, precipitation, through filtering, being dried to water content For 15wt%；By lignin: phenol weight than for 1:1 add phenol, control temperature 85-95 DEG C, insulation reaction 1 hour, Finally adjust ph to 6.5-7.0 with 30wt% sodium hydroxide and obtain final product phenolate lignin.

Bulbus Allii, [Classification system]allium sativum l., [another name] Bulbus Allii, Bulbus Allii, DUSUAN, recklessly Bulbus Allii.[function cures mainly] removing toxic substances parasite killing, reducing swelling and alleviating pain, antidiarrheal dysentery relieving, control lung, anthelmintic, in addition with warming the spleen warming the stomach.Control carbuncle to swell Poison, white bald tinea skin ulcer, dysentery is had loose bowels, pulmonary tuberculosis pertussis, ascarid pinworm, eating accumulation, coldness and pain in the epigastrium, oedema turgor.Bulbus Allii is complete Intracellular have a kind of colourless, odorless and water miscible spice precursor alliin, connects with a kind of allinase after cell damage Touch, be transformed into the product garlicin of sulfur-bearing.Garlicin has strong antibacterial and anti-inflammation functions, to multiple coccuses, bacillus, funguses All there are suppression and killing action with virus etc., be antibacterial action one kind the strongest in the current natural plants finding.In addition, Bulbus Allii Element has been developed that utilization in cultivation aquaculture, and in feedstuff, garlicin can be used as antibacterial, agrochemical.Garlicin has and kills Bacterium, parasite killing, removing toxic substances, anti-corrosion the effects such as.

Fructus Capsici, [Classification system]capsicum annuum, [another name] spicy, caynne pepper, Cornu Bovis seu Bubali Green pepper, Red sea green pepper, capsicum annum fasciculatum；Capsaicin is that it is a kind of pungent vanilloyl of extreme mainly in peppery material in pepper fruit Amine alkaloid, its chemical structure names is: [(4- hydroxy 3-methoxybenzene base)-methyl] -8- methyl-(anti-) -6- nonene acyl Amine.Capsaicin significantly inhibits effect to Bacillus cereuss and bacillus subtilis, but to staphylococcus aureuses and escherichia coli Invalid.Its branch, leaf have no antibacterial action, only have very slight suppression to tubercule bacillus.10-20% Fructus Capsici decocts chaste tree killing Cimex bedbug Effect.To the action of contace poison of insect substantially, insect shows after contact with capsaicin and benumbs and (inertia, do not take capsaicin Food), the finally dead phenomenon of paralysis；It also has stomach poison function to insect, after pests, then suppresses Chlorogenic Acid, impact Digest and assimilate, disturb respiratory metabolism, cause insect to be led to physiology pathological changes because normal physiological activity is obstructed, so that growth promoter is subject to Dead to suppression.

The preparation of described Oxytarch:

(1), select glass apparatus and assemble synthesizer:

Jj600 electronic balance；Digital display thermostat water bath；Digital display constant speed stirrer；There-necked flask；Electric heating constant-temperature blowing drying box； Ndj-79 Rotary Viscosimeter.

(2) reagent chemicals:

Raw material: tapioca (moisture 13.8%)；

Reagent: hydrogen peroxide (30%), Copper hydrate, copper sulfate, sodium sulfite (being ar).

(3) preparation principle:

Starch oxidant effect under, the hydroxyl on glucose unit oxidable become carboxyl (- cooh), it makes binding agent Stability be improved significantly.Oxidation decreases the quantity of hydroxyl in starch molecule, so that molecular association is obstructed, thus subtracting The weak binding ability of intermolecular hydrogen chain.Meanwhile, glucosides chain break, makes macromolecules degradation, and starch molecule amount reduces, thus increasing Dissolubility, mobility and caking property are added.In the presence of liquid caustic soda, with not oxidized hydroxy combining in starch, destroy part hydrogen Key, makes declines between macromole, thus easily swelling gelatinizing, give its caking property.

Preparation process is as follows:

Weigh 200g tapioca in 1000ml there-necked flask, add water and be tuned into the starch milk of 18～21 ° of b é, stir, slowly The sodium hydroxide solution of slow a certain amount of 5%～7% concentration of Deca.After water-bath rises to design temperature, add 0.01% copper sulfate.So After add a certain amount of hydrogen peroxide, after isothermal reaction certain time, add 0.4g sodium sulfite, stir 10min terminating reaction. After reaction terminates, it is 5.5～6.0 with dilute hydrochloric acid neutralization reaction liquid ph value.Sucking filtration is dehydrated, washes clean, places 40-50 in baking oven Dry at DEG C, pulverize, screening obtains final product product.The Oxytarch of above-mentioned use can be produced with jumbo reactor.

Compared with prior art, the positive effect of the present invention is:

1st, adopt unavailable waste material during rotary-cut Eucalyptus plate multilamellar Eucalyptus plate --- i.e. the leftover pieces hot pressing life of Eucalyptus Produce oriented wood chipboard, because Eucalyptus is a kind of fast growing wood, after felling, be peeled into plate, with adhesive, plate bonded again after being dried This multi-layer sheet is become to be also referred to as solid wood board, can be used as multiple use of the office appliance of high-quality, timber floor, furniture and building-supporting plate On the way, but multiple-plate production process produce a large amount of all can produce many particles either in cut-out, rotary-cut or adhesion process, These multi-layer sheet factories, particle is burnt only as fuel, causes the great wasting of resources, effectively utilizes Eucalyptus of the present invention Waste material in the material course of processing, forms the zero-emission of timber waste, and cost of material reduces by 55% about, has both saved resource, Protect environment again, in today of wood raw material increasingly shortage, be a kind of very high Resource comprehensive utilization method of benefit, and process Operation is simple, reasonable, and processing cost is low, and energy consumption reduces at least 15%, and cost of labor reduces at least 10%, and crudy is high, fits For industrialized production.

2nd, for Eucalyptuss bark problem, we remove bark using using winnower, enhance product performance.

3rd, the present invention, for cost-effective (isocyanates are no aldehyde adhesives, and cost is high), adds isocyanide using top layer Acid esters wood powder end adhesive, the method that sandwich layer adopts fire-retardant composite urea formaldehyde resin adhesive,

4th, in the present invention, isocyanates gluing agent is dispersed in wood powder end, using the loose structure on wood powder end surface, Carbimide gluing agent is adsorbed onto in tiny wood powder end, forms uniform isocyanates wood powder end composite adhesive, Reduce the permeability of isocyanates gluing agent.

5th, in the present invention, adopted according to the characteristic that Eucalyptus plate (raw material of oriented wood chipboard is the leftover pieces of Eucalyptus) produces Cyanurotriamide modified urea resin, as adhesive major ingredient, has process is simple, and raw material is cheap, and adhesive strength is high, water white transparency The advantages of, and the release of low formaldehyde gases, it is a kind of environmental type resin, the resistance to water that can improve Lauxite is (thus increase Plus the waterproof and dampproof performance of cupboard board), and prevent glue-line contraction minimizing internal stress, raising ageing-resistant performance, increase glue solid content, Viscosity and tack, extend working life.And using hydrogenated rosin for antioxidant so that the oriented wood chipboard produced is not allowed Perishable, extend the life-span, anti-aging；Using polyvinyl alcohol for toughener so that the oriented wood chipboard intensity produced increases； Using propanediol polyoxypropylene polyvinylether, it is defoamer, prevent adhesive from during using, having bubble cavity to produce；Using poly- Isocyanates are firming agent；From isobutyl triethoxy silane as bridging agent, its one end can be combined with Lauxite carbonyl, The other end can strengthen its plank intensity with the hydroxy combining of starch；A large amount of active groups are contained, as formaldehyde in phenolate lignin Agent for capturing, can eliminate part free formaldehyde；Using Oxytarch, as viscosity complexing agent, can reduce cyanurotriamide modified Lauxite addition, cost-effective；Activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder are added to this as Vermins-proof mildew-proof agent In invention composite urea formaldehyde resin adhesive, vermins-proof effect persistently, does not affect the bonding strength of adhesive, disperses all in adhesive Even, can permeate to wood internal with glue, make product reach the function of long-acting insect protected.

6th, it is prepared by the method for the present invention the oriented wood chipboard obtaining, residual formaldehyde amount is low, and fire resistance is good, intensity/hard Degree is 3-5 times of conventional panels, and automobile is all pressed constantly, and bearing is good, indeformable, and Hepplewhite ruggedness is good, processing characteristics Good, can saw, can dig, can bore, can follow closely, engraving milling, fluting, engraving it is adaptable to timber structure room, decorations, furniture floor, load-bearing are tied Structure material automobile, container floor etc..

7th, it is prepared by the method for the present invention the oriented wood chipboard obtaining, with product specification 2440 × 1220 × 15(mm), hold Support plate material, measures under the conditions of drying regime, and its burst size of methanal is 0.110～0.116 mg/ m³, the quiet Qu Qiang of parallel direction Spend for 33～39 mpa, parallel flexible modulus is 4614～4779 mpa；Vertical spring modulus is 1504～1771mpa, 24 h Thickness swelling rate is 10%～17%, has excellent water resistance, and vertical nail-holding ability is up to 89000n, dimensional stability and By above-mentioned data, good reliability, understands that its mechanical property every and expansion character and burst size of methanal are superior to standard.And, The interpolation of the Vermins-proof mildew-proof agent of embodiment of the present invention preparation thoroughly solves the problems, such as that sheet material is subject to Coptotermes formosanus Shtrari., moth corrodes, and prolongs The service life of long sheet material.

8th, in the present invention, activated carbon powder and the fine and closely woven porous of bamboo charcoal powder, has superpower moisture protection, in energy absorption air Moisture, it is to avoid timber main body has that mouldy, the phenomenon such as addle；Also have and decompose the function that abnormal flavour removes U.S. sterilization, if absorbing wood The harmful gass such as formaldehyde, benzene, dimethylbenzene, hydrogen in matter product.Main component garlicin in Bulbus Allii has sterilization, parasite killing, solution Malicious, anti-corrosion the effects such as；And the main component capsaicin in Fructus Capsici is obvious to the action of contace poison of insect, after insect is contacted with capsaicin The i.e. finally dead phenomenon of performance paralysis (inertia, do not take food), paralysis.Activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder It is added in composite urea formaldehyde resin adhesive of the present invention as Vermins-proof mildew-proof agent, vermins-proof effect persistently, does not affect the glue of adhesive Close intensity, be uniformly dispersed in adhesive, can permeate to wood internal with glue, make product reach the function of long-acting insect protected, more Importantly, all safe and efficient low toxicity of this several material, there is certain antiseptic property.

Specific embodiment

Embodiment 1

Full Eucalyptus leftover pieces produce Vermins-proof mildew-proof oriented wood chipboard method it is characterised in that: comprise the steps:

5) the qualified dry wood shavings of watch core layer transport through transporter, deliver in glue mixer, using machinery after the metering of chip metering feed bin Formula glue mixing carries out applying glue respectively to top layer and sandwich layer, and top layer applies isocyanates wood powder end composite adhesive, and resin added is 4%, resin added by over dry glue to the mass ratio of over dry wood shavings on the basis of, sandwich layer apply Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, Applied amount be 3%, applied amount by over dry glue to the mass ratio of over dry wood shavings on the basis of；

7) particle mat is carried out precompressed, the pressure of precompressed is 0.8mpa, time 8min；Finally carry out hot pressing, hot pressing pressure Power 2.5mpa, temperature is 210 DEG C, and hot pressing time is every millimeter of thickness of slab 80s～85s, then delivers to quenched in balance storehouse, is obtained Particieboard substrate；

8) the particieboard substrate of step 7) is carried out coarse sand sanding, sand falls 0.8-1.5 millimeter；Then by the particieboard base after coarse sand Plate carries out fine sand sanding, and sand falls 0.5-0.8 millimeter, obtains sanding substrate；Compound toward sanding substrate coating isocyanates wood powder end Adhesive, the thick poplar decoration panel of patch 8mm, obtain poplar skin thick china, pressure carries out, for 13 mpa, 2 hours of colding pressing in colding pressing Afterwards, carry out hot-forming, hot pressing pressure 15mpa using hot pressing pressure machine, temperature is 120 DEG C, last fine sand polishing, saw side, point Choosing packing, obtains Vermins-proof mildew-proof oriented wood chipboard.

Above-mentioned steps 5) and step 8) described in isocyanates wood powder end composite adhesive, be with isocyanates for this Body, be isocyanate weight according to wood powder end addition 10% will be added to isocyanates through the wood powder end of processing In, after stirring, form uniform isocyanates wood powder end composite adhesive.

50 parts of cyanurotriamide modified urea resin；

20 parts of Oxytarch；

1 part of polyvinyl alcohol；

3 parts of hydrogenated rosin；

2 parts of propanediol polyoxypropylene polyvinylether；

4 parts of polyisocyanate；

0.5 part of isobutyl triethoxy silane；

5 parts of phenolate lignin；

100 parts of clear water；

2.1 parts of Vermins-proof mildew-proof agent.

Described Vermins-proof mildew-proof agent be activated carbon powder, the mixture of bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder, its part by weight according to Secondary for 2:3:1:1, wherein 0.6 part of activated carbon powder, 0.9 part of bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder are 0.3 part.Described activity 300 mesh sieves all crossed by powdered carbon, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder.

The production method of above-mentioned Vermins-proof mildew-proof composite urea formaldehyde resin: first the clear water of parts by weight is put in reactor, plus Heat, to 80 DEG C, is subsequently adding hydrogenated rosin, isobutyl triethoxy silane and the propanediol polyoxypropylene polyethylene of parts by weight Ether, stirs 30 minutes, adds polyvinyl alcohol, the phenolate lignin of parts by weight, be allowed to dissolve, add the three of parts by weight Poly cyanamid modified urea-formaldehyde resin, Oxytarch, activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder, keep 80 DEG C of stirring reactions 5 Hour, the polyisocyanate adding parts by weight in 20 minutes before use, mixing and stirring can use.

Embodiment 2

5) the qualified dry wood shavings of watch core layer transport through transporter, deliver in glue mixer, using machinery after the metering of chip metering feed bin Formula glue mixing carries out applying glue respectively to top layer and sandwich layer, and top layer applies isocyanates wood powder end composite adhesive, and resin added is 6%, resin added by over dry glue to the mass ratio of over dry wood shavings on the basis of, sandwich layer apply Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, Applied amount be 5%, applied amount by over dry glue to the mass ratio of over dry wood shavings on the basis of；

7) particle mat is carried out precompressed, the pressure of precompressed is 0.8mpa, time 7min；Finally carry out hot pressing, hot pressing pressure Power 2.8mpa, temperature is 205 DEG C, and hot pressing time is every millimeter of thickness of slab 80s～85s, then delivers to quenched in balance storehouse, is obtained Particieboard substrate；

8) the particieboard substrate of step 7) is carried out coarse sand sanding, sand falls 0.8-1.5 millimeter；Then by the particieboard base after coarse sand Plate carries out fine sand sanding, and sand falls 0.5-0.8 millimeter, obtains sanding substrate；Compound toward sanding substrate coating isocyanates wood powder end Adhesive, the thick poplar decoration panel of patch 8mm, obtain poplar skin thick china, after pressure of colding pressing carries out colding pressing 2 hours for 14mpa, Carry out hot-forming, hot pressing pressure 18mpa using hot pressing pressure machine, temperature is 115 DEG C, last fine sand polishing, saw side, sorting is beaten Bag, obtains Vermins-proof mildew-proof oriented wood chipboard.

Above-mentioned steps 5) and step 8) described in isocyanates wood powder end composite adhesive, be with isocyanates for this Body, be isocyanate weight according to wood powder end addition 15% will be added to isocyanates through the wood powder end of processing In, after stirring, form uniform isocyanates wood powder end composite adhesive.

80 parts of cyanurotriamide modified urea resin；

25 parts of Oxytarch；

2 parts of polyvinyl alcohol；

6 parts of hydrogenated rosin；

2.5 parts of propanediol polyoxypropylene polyvinylether；

5 parts of polyisocyanate；

3 parts of isobutyl triethoxy silane；

8 parts of phenolate lignin；

150 parts of clear water；

3.5 parts of Vermins-proof mildew-proof agent.

Described Vermins-proof mildew-proof agent be activated carbon powder, the mixture of bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder, its part by weight according to Secondary for 2:3:1:1, wherein 1 part of activated carbon powder, 1.5 parts of bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder are 0.5 part.Described activated carbon 300 mesh sieves all crossed by powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder.

The production method of above-mentioned Vermins-proof mildew-proof composite urea formaldehyde resin: first the clear water of parts by weight is put in reactor, plus Heat, to 90 DEG C, is subsequently adding hydrogenated rosin, isobutyl triethoxy silane and the propanediol polyoxypropylene polyethylene of parts by weight Ether, stirs 20 minutes, adds polyvinyl alcohol, the phenolate lignin of parts by weight, be allowed to dissolve, add the three of parts by weight Poly cyanamid modified urea-formaldehyde resin, Oxytarch, activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder, keep 85 DEG C of stirring reactions 4 Hour, the polyisocyanate adding parts by weight in 15 minutes before use, add 1 part of activated carbon powder, 1.5 parts of bamboo charcoal powder, greatly Bulbus Allii powder and each 0.5 part of Fructus Capsici powder, mixing and stirring can use.

Embodiment 3

5) the qualified dry wood shavings of watch core layer transport through transporter, deliver in glue mixer, using machinery after the metering of chip metering feed bin Formula glue mixing carries out applying glue respectively to top layer and sandwich layer, and top layer applies isocyanates wood powder end composite adhesive, and resin added is 8%, resin added by over dry glue to the mass ratio of over dry wood shavings on the basis of, sandwich layer apply Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, Applied amount be 6%, applied amount by over dry glue to the mass ratio of over dry wood shavings on the basis of；

7) particle mat is carried out precompressed, the pressure of precompressed is 0.9mpa, time 5min；Finally carry out hot pressing, hot pressing pressure Power 3mpa, temperature is 210 DEG C, and hot pressing time is every millimeter of thickness of slab 80s～85s, then delivers to quenched in balance storehouse, plane is obtained Card substrate；

8) the particieboard substrate of step 7) is carried out coarse sand sanding, sand falls 0.8-1.5 millimeter；Then by the particieboard base after coarse sand Plate carries out fine sand sanding, and sand falls 0.5-0.8 millimeter, obtains sanding substrate；Compound toward sanding substrate coating isocyanates wood powder end Adhesive, the thick poplar decoration panel of patch 8mm, obtain poplar skin thick china, pressure carries out, for 15 mpa, 2 hours of colding pressing in colding pressing Afterwards, carry out hot-forming, hot pressing pressure 20mpa using hot pressing pressure machine, temperature is 120 DEG C, last fine sand polishing, saw side, point Choosing packing, obtains Vermins-proof mildew-proof oriented wood chipboard.

Above-mentioned steps 5) and step 8) described in isocyanates wood powder end composite adhesive, be with isocyanates for this Body, be isocyanate weight according to wood powder end addition 20% will be added to isocyanates through the wood powder end of processing In, after stirring, form uniform isocyanates wood powder end composite adhesive.

100 parts of cyanurotriamide modified urea resin；

30 parts of Oxytarch；

3 parts of polyvinyl alcohol；

8 parts of hydrogenated rosin；

3 parts of propanediol polyoxypropylene polyvinylether；

6 parts of polyisocyanate；

5 parts of isobutyl triethoxy silane；

10 parts of phenolate lignin；

200 parts of clear water；

4.9 parts of Vermins-proof mildew-proof agent.

Described Vermins-proof mildew-proof agent be activated carbon powder, the mixture of bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder, its part by weight according to Secondary for 2:3:1:1, wherein 1.4 parts of activated carbon powder, 2.1 parts of bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder are 0.7 part.Described activity 300 mesh sieves all crossed by powdered carbon, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder.

The production method of above-mentioned Vermins-proof mildew-proof composite urea formaldehyde resin: first the clear water of parts by weight is put in reactor, plus Heat, to 100 DEG C, is subsequently adding hydrogenated rosin, isobutyl triethoxy silane and the propanediol polyoxypropylene polyethylene of parts by weight Ether, stirs 10 minutes, adds polyvinyl alcohol, the phenolate lignin of parts by weight, be allowed to dissolve, add the three of parts by weight Poly cyanamid modified urea-formaldehyde resin, Oxytarch, activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder, keep 90 DEG C of stirring reactions 2 Hour, 10-20 minute adds the polyisocyanate of parts by weight before use, adds 1.4 parts of activated carbon powder, bamboo charcoal powder 2.1 Part, Bulbus Allii powder and each 0.7 part of Fructus Capsici powder, mixing and stirring can use.

Comparative example 3

Full Eucalyptus leftover pieces produce oriented wood chipboard method it is characterised in that: comprise the steps:

5) the qualified dry wood shavings of watch core layer transport through transporter, deliver in glue mixer, using machinery after the metering of chip metering feed bin Formula glue mixing carries out applying glue respectively to top layer and sandwich layer, and top layer applies isocyanates wood powder end composite adhesive, and resin added is 8%, resin added by over dry glue to the mass ratio of over dry wood shavings on the basis of, sandwich layer apply urea-formaldehyde resin adhesive (purchased from Zibo Hua Sen Binding agent company limited), applied amount be 6%, applied amount by over dry glue to the mass ratio of over dry wood shavings on the basis of；

8) the particieboard substrate of step 7) is carried out coarse sand sanding, sand falls 0.8-1.5 millimeter；Then by the particieboard base after coarse sand Plate carries out fine sand sanding, and sand falls 0.5-0.8 millimeter, obtains sanding substrate；Compound toward sanding substrate coating isocyanates wood powder end Adhesive, the thick poplar decoration panel of patch 8mm, obtain poplar skin thick china, pressure carries out, for 15 mpa, 2 hours of colding pressing in colding pressing Afterwards, carry out hot-forming, hot pressing pressure 20mpa using hot pressing pressure machine, temperature is 120 DEG C, last fine sand polishing, saw side, point Choosing packing, obtains oriented wood chipboard.

According to ly/t1580-2000 " oriented wood chipboard " to embodiment and contrast implement in products obtained therefrom (drying regime Under the conditions of carry sheet material) related mechanical property be measured, the product specification of embodiment and comparative example for 2440 × 1220 × 15(mm), the mensure of burst size of methanal is according to 1m³Climate box method is carried out by gb 18580 regulation；Test specimen is from constant temperature and humidity After case takes out, vertically it is placed on immersion 72h ± 1 h in the water that temperature is 20 DEG C ± 2 DEG C immediately, then test specimen is at -12 DEG C to -20 DEG C Freeze 24h ± 0.25h in refrigerator, put into after frost and 72h ± 1 h in the drying baker of temperature 70 C ± 1 DEG C, is dried, after three circulations Carry out the mensure of MOR；Regulation according to gb/t 17657 measures elastic modelling quantity；Regulation according to gb/t 17657 measures Vertical nail-holding ability；According to gb/t 17657 regulation measure 24 h thickness swelling rates, temperature be 15 DEG C, relative humidity >= In the environment of 85%, record its mouldy time and mould varying index, additionally, the oriented wood chipboard being obtained is taken size identical respectively Sample sizes put into culture and have in the culture dish of equal number Coptotermes formosanus Shtrari., in detection culture dish after culture 24 hours, Coptotermes formosanus Shtrari. deposits Live number calculate the mortality rate of Coptotermes formosanus Shtrari..Each Product checking three times, data is averaged, and every testing result is as shown in the table :

From the data of above-described embodiment 1-3, it is prepared by the method for the present invention the oriented wood chipboard obtaining, with product specification 2440 × 1220 × 15(mm), carry sheet material, measure under the conditions of drying regime, its burst size of methanal is 0.110～0.116 mg/ m³, the MOR of parallel direction is 33～39 mpa, and parallel flexible modulus is 4614～4779 mpa；Vertical spring modulus For 1504～1771mpa, 24 h thickness swelling rates are 10%～17%, have excellent water resistance, and vertical nail-holding ability is high Reach 89000n, dimensional stability and good reliability, its mechanical property every and expansion character and formaldehyde are understood by above-mentioned data Burst size is superior to standard.

From the data of comparative example 3, its burst size of methanal 0.345 mg/ m³The peak of the standard of being significantly larger than 0.124 mg/ m³, MOR, 24 h thickness swelling rates, elastic modelling quantity (parallel), elastic modelling quantity (vertical) and vertical This several mechanical properties of nail-holding ability and standard difference less, but temperature be 15 DEG C, in the environment of relative humidity >=85%, 4 Hour has occurred and that goes mouldy, up to 11 grades of mould varying index, and after sheet material insect protected is tested 24 hours, in culture dish, termite mortality is only 5.2%, therefore it is known that compared with the oriented wood chipboard in embodiment, the time that it goes mouldy is significantly shorter than determining in embodiment To particieboard, mould varying index is also larger, and after sheet material insect protected is tested 24 hours, in culture dish, termite mortality is only 5.2%, after testing 24 hours well below the Vermins-proof mildew-proof oriented wood chipboard insect protected that embodiment prepares, Coptotermes formosanus Shtrari. in culture dish Mortality rate 100.0%, illustrate the embodiment of the present invention preparation Vermins-proof mildew-proof agent interpolation thoroughly solve sheet material be subject to Coptotermes formosanus Shtrari., The problem that moth corrodes, extends the service life of sheet material, and burst size of methanal is well below comparative example 3.

Therefore, find out by upper table, during Vermins-proof mildew-proof oriented wood chipboard is produced by the method for the present invention, this The Vermins-proof mildew-proof composite urea formaldehyde resin of invention and isocyanates wood powder end composite adhesive produce Vermins-proof mildew-proof oriented wood chipboard Have prominent with respect to the oriented wood chipboard of common urea-formaldehyde resin adhesive and the composite adhesive preparation of isocyanates wood powder end Advantage, be mainly manifested in: the method for the present invention produce Vermins-proof mildew-proof oriented wood chipboard there is Stability Analysis of Structures, be unlikely to deform, Water resistance is excellent, the feature of stability and good reliability；Also have excellent Vermins-proof mildew-proof performance, there is preferable application It is worth.

Claims

1. full Eucalyptus leftover pieces produce Vermins-proof mildew-proof oriented wood chipboard method it is characterised in that: comprise the steps:

The leftover pieces of described production Eucalyptus plate are to make unavailable waste material during many Eucalyptus laminate after rotary-cut Eucalyptus plate；

2) wet wood shavings are delivered in roller drier through transporter and are dried, and the moisture content controlling wood shavings is 3.0%-5.0%；

The method of described separation veneer adopts winnower, and in winnower, veneer is blown off because proportion is less, and veneer is made Fuel for air stove；Separate metal and sandstone adopts gravity screening machine；

4) pass through screening through dry wood shavings and sort, length is done in the watch core layer of 5-20 millimeter in 50-80 millimeter and width Wood shavings are sent to the storage of watch core layer dry wood shavings material transitional storehouse, the wood shavings that length is more than 80 millimeters and width is more than 20 millimeters by transporter It is sent to the storage of watch core layer dry wood shavings material transitional storehouse after shearing again；

2. full Eucalyptus leftover pieces according to claim 1 produce Vermins-proof mildew-proof oriented wood chipboard method it is characterised in that: Isocyanates wood powder end composite adhesive described in step 5) and step 8), is with isocyanates as body, according to wood powder Last addition is that the 10-20% of isocyanate weight will be added in isocyanates through the wood powder end of processing, stirs Afterwards, form uniform isocyanates wood powder end composite adhesive.

3. full Eucalyptus leftover pieces according to claim 2 produce Vermins-proof mildew-proof oriented wood chipboard method it is characterised in that: The course of processing at described wood powder end is: by the plane that length in wood chip shear history is less than 50 millimeters and width is less than 5 millimeters Flower grinds to form wood powder end, controls its particle diameter to be 0.1-3 micron, and wood powder end is dried to moisture content less than less than 3%.

4. full Eucalyptus leftover pieces according to claim 1 produce Vermins-proof mildew-proof oriented wood chipboard method it is characterised in that: Vermins-proof mildew-proof composite urea formaldehyde resin adhesive described in step 5), is made up of the raw material of following parts by weight:

50～100 parts of cyanurotriamide modified urea resin；

20～30 parts of Oxytarch；

1～3 part of polyvinyl alcohol；

3～8 parts of hydrogenated rosin；

2～3 parts of propanediol polyoxypropylene polyvinylether；

4～6 parts of polyisocyanate；

0.5～5 part of isobutyl triethoxy silane；

5～10 parts of phenolate lignin；

100～200 parts of clear water；

2.1～4.9 parts of Vermins-proof mildew-proof agent.

5. full Eucalyptus leftover pieces according to claim 4 produce Vermins-proof mildew-proof oriented wood chipboard method it is characterised in that: Described Vermins-proof mildew-proof agent is activated carbon powder, the mixture of bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder, and its part by weight is followed successively by 2:3: 1:1；300 mesh sieves all crossed by described activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder.

6. full Eucalyptus leftover pieces according to claim 4 produce Vermins-proof mildew-proof oriented wood chipboard method it is characterised in that: The production method of Vermins-proof mildew-proof composite urea formaldehyde resin: first the clear water of parts by weight is put in reactor, is heated to 80-100 DEG C, It is subsequently adding hydrogenated rosin, isobutyl triethoxy silane and the propanediol polyoxypropylene polyvinylether of parts by weight, stir 10 Minute, to 30 minutes, adds polyvinyl alcohol, the phenolate lignin of parts by weight, is allowed to dissolve, adds the three of parts by weight Poly cyanamid modified urea-formaldehyde resin, Oxytarch and Vermins-proof mildew-proof agent, keep 80-90 DEG C of stirring reaction 2-5 hour, before use 10-20 minute adds the polyisocyanate of parts by weight, and mixing and stirring can use.