CN110358258A - A method of it is prepared using spent resin and moulds the wooden particle - Google Patents

Abstract

The invention discloses a kind of methods for being prepared using spent resin and moulding the wooden particle, the mixing spent resin material recycled using useless circuit board, wood powder, ammonium polyphosphate, zinc borate is as raw material, ready raw material is mixed into 20-25min under the revolving speed of 800-1000rpm/min, after the completion of mixing, it is dry in 85-95 DEG C of environment to carry out extruding pelletization using single screw extrusion machine lower than after 5wt% to mixing water content of matter, ammonium polyphosphate is only added in integral formula, but it has been provided simultaneously with the acid source of Intumescent Retardant System, gas source, carbon source (cellulose inside wood materials), fire prevention is increased using expandable flame retardant principle, press down the performance of cigarette, further increase its service performance；The zinc borate being wherein added acts not only as the flame retardant effect that synergist further increases ammonium polyphosphate, can also increase antibacterial characteristics, and integrated artistic is simple, low in cost, and properties of product are stablized, and has good economic benefit and social value.

Description

A method of it is prepared using spent resin and moulds the wooden particle

Technical field

The present invention relates to technical field of composite materials, and in particular to a method of it is prepared using spent resin and moulds the wooden particle.

Background technique

World's printed circuit board is the foundation of electronics industry, from computer, mobile phone, television set to electronic toy etc., There is the presence of circuit board in almost all of electronic product, is produced during useless circuit board metal component separation and recovery and account for it The spent resin waste of the nearly 50-80% of quality, it has also become the problem of electronic waste processing.Useless circuit board substrate is with epoxy resin, phenol Urea formaldehyde, polytetrafluoroethylene (PTFE) are adhesive, with paper or glass fibre are micro- are reinforcing material and form composite panel, in the list of plate It is first or two-sided be pressed with copper foil.Since the regeneration difficulty of nonmetallic materials is larger, so the recycling of circuit board is with metal Based on material, a large amount of nonmetallic wastes are generally filled or are carried out based on open incineration disposition to bank up, simply, are important Environomental pollution source.

Wood plastic composite is by obtained after thermoplastic resin and biological material and auxiliary agent blended melting appropriate A kind of composite material, useless circuit board after processing obtained nonmetallic materials can be used as the part of Wood plastic composite/ All resins base-material is utilizing to realize resource.Meanwhile the new-added items material such as isolated glass fibre is difficult in nonmetallic materials Material, can make the performance of Wood plastic composite be strengthened.Wood plastic composite has many advantages, such as at low cost, easy coloring, moisture-proof, It is extensive in industrial applications such as railway iron pillow, garden landscape, finishings.Meanwhile wood materials in Wood plastic composite and plastics are all It is combustible material, the cigarette for generation of burning easily causes casualties, and WPC is subject to the destruction of environment, significant shadow under natural conditions Ring its endurance quality.Simultaneously as contain wood materials in WPC, bacterium easy to breed in use process, cause material rotten and Its use is influenced, or even can be detrimental to health.Disadvantages described above reduces the performance of WPC, seriously affects its use scope and makes Use the service life.

It is retrieved by technology, Chinese invention patent 200910054313.4 discloses a kind of utilization discarded printed circuit boards system The method of standby Wood plastic composite, using the waste circuit board nonmetallic material obtained after broken and sort as raw material, Instead of part wood powder for producing Wood plastic composite.By 25-35 parts of thermoplastic, waste circuit board nonmetallic material particle 15-40 parts, 30-60 parts of wood powder, it is grafted compatilizer 2-4 parts, 1-2 parts of lubricant, 0.3-0.6 parts of coupling agent by metering, mixing It is made with plasticating convenient for the wooden particle of molding modeling, then will mould the wooden particle feeding extruder and carry out extrusion molding, through cooling and shaping Excision forming afterwards, the invention both can solve the disposition and pollution problem of waste circuit board nonmetallic material, have product strength Advantage high, processing technology is simple, but the problems such as still can not solve the fire-retardant of plastic-wood material, aging, Yi Zisheng bacterium.

Summary of the invention

It is an object of the invention to overcome the above-mentioned prior art, a kind of prepared using spent resin is provided and moulds the wooden particle Method, the resource utilization of nonmetallic material in waste printed circuit board may be implemented, at the same have processing technology it is simple, it is at low cost, The wide advantage of products application range.

To achieve the above object, the invention provides the following technical scheme:

A method of it is prepared using spent resin and moulds the wooden particle, specific steps are as follows:

S1: raw material preparation: prepare resin material, wood powder, ammonium polyphosphate, zinc borate；

The source of the resin material is the mixing spent resin material that commercial recovery obtains, and selectes any conduct of following resin Fixing resin, including PVC, PE, PP, epoxy resin, phenolic resin, the fixing resin in mixing spent resin material described in sample detection Whether content is more than 50wt%, if be lower than, commercially pure fixing resin is added to content up to 50wt%, due to different batches Mixing spent resin material ingredient it is different, and selected fixing resin can guarantee end product quality fluctuation less, guarantee Industrial application；

By weight, the resin material additive amount is 200 parts, and the wood powder additive amount is 50 parts, and the ammonium polyphosphate adds Dosage is 5-10 parts, and the additive amount of the zinc borate is 0.5-2 parts, and preferable flame retardant effect may be implemented under the ratio；

Wherein, mixing spent resin material can be from the waste resources such as useless circuit board, recycled plastic, wood powder furniture or its The leftover pieces waste of its wood product industry；One of currently more effective and environmentally friendly flame resistant method is Intumscent Flame Retardant System, Composition three elements are carbon source, acid source, gas source, using the heated characteristic for decompositing ammonia and acidic materials of ammonium polyphosphate, with the object Matter is used as acid source and gas source simultaneously, and the cellulose in wood powder constitutes carbon source, can be dehydrated and be carbonized at the initial stage of burning, form carbonaceous Froth bed, play it is heat-insulated, fire-retardant, suppression cigarette the effect of；There are two effect, one to have the work of disinfection and sterilization for the addition of zinc borate With, it can corrode and breed to avoid bacterium, increase weatherability and safety in utilization, secondly synergistic of the zinc borate as ammonium polyphosphate Agent can significantly improve its flame retardant property；

S2: raw material mixing: ready raw material is mixed into 20-25min under the revolving speed of 800-1000rpm/min, with reality Existing various raw materials are sufficiently mixed；After the completion of mixing, dry extremely mixing water content of matter is lower than 5wt% in 85-95 DEG C of environment, Since the wood powder in raw material belongs to bulk material, it is easy to absorb water, and the excessively high stabilization that will affect product in extrusion process of water content Property；

S3: extruding pelletization: the drying composite that S2 is obtained is put into single screw extrusion machine, carries out extruding pelletization, is squeezed out Parameter is as follows: an area, 2nd area, three area's temperature are between 190-200 DEG C, and the temperature of head is screw speed between 180-190 DEG C For 28-32r/min, natural cooling.

Preferably, the wood powder be one kind below: Poplar Powder, pine powder, fir powder, these types wood powders property connect Closely, it is suitable for this process.

It preferably, further include light stabilizer, antioxidant, lubricant in S1 step；The light stabilizer be AM-101, One of GW-540, light stabilizer -622, triazine -5 are a variety of, and the antioxidant is antioxidant 1010, antioxidant 264, resists One of oxygen agent 616, antioxidant BHT are a variety of, the lubricant be stearic acid, stearate it is one or more, light is steady Determining agent is the common additive of exterior material, can shield or absorb the energy of ultraviolet light, quenching singlet oxygen and by hydrogen peroxide Compound resolves into the functions such as inert matter, delays the light ager process of material, weatherability is improved, according to the different principle of effect Photomask agent, ultraviolet absorbing agent, quenching and radical scavenger, hydrogen peroxide decomposition agent can be divided into；Antioxidant it is main Effect is to delay or inhibit the progress of polymer oxidation process, to prevent high polymer chain rupture and prolong its service life, according to The different principle of effect can be divided into peroxide-decomposing type antioxidant, such as zinc dialkyl dithiophosphate and dialkyl dithio ammonia Base zinc formate etc.；Radicals scavenging type antioxidant, such as N- phenyl-α-naphthylamine and alkyl phenthazine；Metal deactivating type antioxidant, Such as Benzotriazole Derivative and mercaptobenzothiazolderivative derivative three classes；Lubricant is important polymer processing aid, avoids Product because the coefficient of friction on surface and shaping grinding apparatus inner surface it is excessive caused by demould failure, including metal soap, chloroflo, amide Wax, fatty acid, organosiloxane or fluorine containing lubricant.

It is highly preferred that the light stabilizer is triazine -5, additive amount is 0.2-0.4 parts, and the antioxidant is antioxidant 1010,0.3-0.5 parts of additive amount, the lubricant uses zinc stearate, and additive amount is 0.5-1.0 parts.

Preferably, the partial size of the wood powder is between 80-100 mesh, and under the fineness, wood powder is easier to be uniformly mixed, It can preferably realize that molding squeezes out.

Preferably, in the whipping process of S2, silane coupler solution, the silicon is added thereto by the way of spray Alkane coupling agent solution uses volume fraction to be dissolved in ethyl alcohol for 5% KH550 and is made, micro- due to wood powder and resin structure difference Seeing structure, there are apparent interfaces, and the performance of product is caused to can not achieve forward gain, tie so improving interface using coupling agent Structure.

Preferably, it is described mixing spent resin material the preparation method is as follows:

Step 1: waste printed circuit board is disassembled out circuit substrate using hot wind dismantling machine, which removed on circuit board Electronic component, remove scolding tin, hot wind disassemble machine be the highest device for disassembling of current cost performance, tearing open for other forms can also be used It unloads and mechanically or manually disassembles；

Step 2: circuit substrate will be crushed by hammer crusher, plate-hammer crusher structure is simple, broken Than big, crushing efficiency is high, certain step main purpose is that circuit substrate is broken for particle, and the broken of remaining form can also be used Broken machinery；

Step 3: sifting out partial size in 0.15mm particle below by electric vibrating, remaining particle is repeated Two steps；

Step 4: grain sorting obtained by third step for metal charge and is mixed into spent resin material using high pressure electrostatic separator, Other sorting modes such as selection by winnowing, magnetic separation can also be used.

Compared with prior art, the beneficial effects of the present invention are:

(1) it is only added to ammonium polyphosphate in integral formula, has but been provided simultaneously with the acid source, gas source, carbon of Intumescent Retardant System Source (cellulose inside wood materials), it is at low cost, comprehensive performance is not influenced, fire prevention is increased using expandable flame retardant, presses down cigarette Performance further increases its service performance；The zinc borate being wherein added acts not only as synergist and further increases poly- phosphorus The flame retardant effect of sour ammonium can also increase antibacterial characteristics；

(2) monitoring of fixing resin has been carried out to raw material in integral formula, considerable amount of technical grade is added when not up to standard Resin excessively causes finally obtained plastic pellet performance to be unsatisfactory for using standard to avoid spent resin body impurity；

(3) the nonmetallic material using useless circuit board after broken apart realizes recycling benefit as a part of resin binder With, while the glass of nonmetallic material remnants or other reinforcements can increase the performance of final plastic pellet；

(4) stablized using light absorber, avoid ultraviolet light, visible light to damage, improved it and answered in outdoor With；

(5) integrated artistic is simple, low in cost, and properties of product are stablized, and has good economic benefit and social value.

Detailed description of the invention

Fig. 1 is process flow chart of the invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

Embodiment 1:

Referring to Figure 1, a method of prepared using spent resin and mould the wooden particle, firstly, recycling mixing from useless circuit board Spent resin material:

Step 1: waste printed circuit board is disassembled out circuit substrate using hot wind dismantling machine, which removed on circuit board Electronic component, remove scolding tin；

Step 2: circuit substrate will be crushed by hammer crusher, plate-hammer crusher structure is simple, broken Than big, crushing efficiency is high；

Step 3: sifting out partial size in 0.15mm particle below by electric vibrating, remaining particle is repeated Two steps；

Step 4: grain sorting obtained by third step for metal charge and is mixed spent resin material using high pressure electrostatic separator.

The wooden particle is moulded using mixing spent resin material preparation:

S1: raw material preparation: resin material, wood powder, ammonium polyphosphate, zinc borate, light stabilizer, antioxidant, lubricant, wood powder are The leftover pieces of furniture or other wood product industries --- Poplar Powder, partial size is between 80-100 mesh, and under the fineness, wood powder is easier It is uniformly mixed, can also preferably realize that molding squeezes out；200 parts of the resin material, the useless tree of the mixing all obtained using recycling Rouge material, selected fixing resin is epoxy resin, and through detecting, wherein epoxy resin content is 83.2%, the wood powder additive amount It is 50 parts.

Using the heated characteristic for decompositing ammonia and acidic materials of ammonium polyphosphate, use the substance gentle as acid source simultaneously Source, the cellulose in wood powder constitute carbon source, can be dehydrated and be carbonized at the initial stage of burning, form carbonaceous froth bed, play heat-insulated, resistance The effect of combustion, suppression cigarette；There are two effect, one to have the function of disinfection and sterilization, can corrode to avoid bacterium for the addition of zinc borate And growth, increase weatherability and safety in utilization, secondly synergist of the zinc borate as ammonium polyphosphate, can significantly improve its resistance Fire performance；

Light stabilizer is the common additive of exterior material, can shield or absorb the energy of ultraviolet light, improves weatherability, Using triazine -5；

The main function of antioxidant is the progress for delaying or inhibiting polymer oxidation process, thus prevent high polymer chain rupture and It prolongs its service life, using antioxidant 1010；

Lubricant is important polymer processing aid, avoids product because of the coefficient of friction on surface and shaping grinding apparatus inner surface Demoulding failure caused by excessive, using zinc stearate；

S2: raw material mixing: ready raw material is mixed into 20min under the revolving speed of 800rpm/min, to realize various originals Being sufficiently mixed for material, in mixed process, is added silane coupler solution, the silane coupling agent thereto by the way of spray Solution uses volume fraction to be dissolved in ethyl alcohol for 5% KH550 and is made, and due to wood powder and resin structure difference, microstructure is deposited At apparent interface, the performance of product is caused to can not achieve forward gain, so improving interfacial structure using coupling agent；It has mixed Cheng Hou is dried in 85 DEG C of environment to mixing to moisture content lower than 5wt%, since the wood powder in raw material belongs to bulk material, It is easy to absorb water, and the excessively high stability that will affect product in extrusion process of water content；

S3: extruding pelletization: the drying composite that S2 is obtained is put into single screw extrusion machine, carries out extruding pelletization, is squeezed out Parameter is as follows: an area, three area's temperature are 190 DEG C, and the temperature in 2nd area is 195 DEG C, and the temperature of head is between 180 DEG C, and screw rod turns Speed is 28r/min, natural cooling.

The raw material and instrument specifically used in the present embodiment 1 is as shown in table 1-2, according to the formula of A1 group, B1 group, C1 group Ratio prepares three retable wood particles.

1 raw material sources of table and ratio list

2 instrument list of table

Test bars are made by national standard in the wooden particle of obtained modeling, A1 group, B1 group, every group of the C1 group batten of preparation three, Physical property, burning, the test of the aspect of aging four are carried out, the average value of test is taken, wherein the examination criteria of physical property is " modeling wood decorative panel GBT241 37-2009 "；In combustion testing, according to GB/T 2406-2008 test limits oxygen index (OI), according to GB/T2408-2008 tests linear burning rate；In burn-in test, it is old that ultraviolet acceleration by light is carried out to sample by ASTM G154-06 Change, every 12h is an ageing cycle, the condensation of ultraviolet light and 4h including 8h, samples and is bent after total 1500h The test of performance；

3 properties of product of table test list

Wherein, the standard of " modeling wood decorative panel GBT241 37-2009 " defined is as follows: moisture content≤2.0%, bending are strong Degree >=20MPa, bending modulus >=1800MPa, thickness swelling rate≤0.5%, product prepared by the present embodiment 1 are all satisfied The standard, and B1 group of formula preparation plastic-wood material comprehensive performance it is optimal, physical property is good, and have it is resistance to combustion, it is anti-aging Performance can be applied to a variety of outdoor locations.

Embodiment 2:

Referring to Figure 1, a method of prepared using spent resin and mould the wooden particle, firstly, recycling mixing from useless circuit board Spent resin material:

Step 1: waste printed circuit board is disassembled out circuit substrate using hot wind dismantling machine, which removed on circuit board Electronic component, remove scolding tin；

Step 2: circuit substrate will be crushed by hammer crusher, plate-hammer crusher structure is simple, broken Than big, crushing efficiency is high；

Step 3: sifting out partial size in 0.15mm particle below by electric vibrating, remaining particle is repeated Two steps；

Step 4: grain sorting obtained by third step for metal charge and is mixed spent resin material using high pressure electrostatic separator.

The wooden particle is moulded using mixing spent resin material preparation:

S1: raw material preparation: resin material, wood powder, ammonium polyphosphate, zinc borate, light stabilizer, antioxidant, lubricant, wood powder are The leftover pieces of furniture or other wood product industries --- pine powder, partial size is 100 mesh, and under the fineness, it is equal that wood powder is easier mixing It is even, it can also preferably realize that molding squeezes out；The additive amount of the resin material is 200 parts of resin materials by the useless tree of 100 parts of mixing Rouge material (being free of PE) and 100 parts of commercially pure PE resins mix, and wherein PE is fixing resin, and the wood powder additive amount is 50 Part, under the ratio, the ingredient of the spent resin powder of different batches is different, and but the wood powder in formula and resin powder composition it is steady It is fixed, it is ensured that end product quality fluctuation less, guarantees industrial application；

Using the heated characteristic for decompositing ammonia and acidic materials of ammonium polyphosphate, use the substance gentle as acid source simultaneously Source, the cellulose in wood powder constitute carbon source, can be dehydrated and be carbonized at the initial stage of burning, form carbonaceous froth bed, play heat-insulated, resistance The effect of combustion, suppression cigarette；There are two effect, one to have the function of disinfection and sterilization, can corrode to avoid bacterium for the addition of zinc borate And growth, increase weatherability and safety in utilization, secondly synergist of the zinc borate as ammonium polyphosphate, can significantly improve its resistance Fire performance；

Light stabilizer is the common additive of exterior material, can shield or absorb the energy of ultraviolet light, improves weatherability, Using light stabilizer -622；

The main function of antioxidant is the progress for delaying or inhibiting polymer oxidation process, thus prevent high polymer chain rupture and It prolongs its service life, using antioxidant 616；

Lubricant is important polymer processing aid, avoids product because of the coefficient of friction on surface and shaping grinding apparatus inner surface Demoulding failure caused by excessive, using magnesium stearate；

S2: raw material mixing: ready raw material is mixed into 25min under the revolving speed of 1000rpm/min, to realize various originals Being sufficiently mixed for material, in mixed process, is added silane coupler solution, the silane coupling agent thereto by the way of spray Solution uses volume fraction to be dissolved in ethyl alcohol for 5% KH550 and is made, and due to wood powder and resin structure difference, microstructure is deposited At apparent interface, the performance of product is caused to can not achieve forward gain, so improving interfacial structure using coupling agent；It has mixed Cheng Hou is dried in 95 DEG C of environment to mixing to moisture content lower than 5wt%, since the wood powder in raw material belongs to bulk material, It is easy to absorb water, and the excessively high stability that will affect product in extrusion process of water content；

S3: extruding pelletization: the drying composite that S2 is obtained is put into single screw extrusion machine, carries out extruding pelletization, is squeezed out Parameter is as follows: an area, three area's temperature are 195 DEG C, and the temperature in 2nd area is 200 DEG C, and the temperature of head is between 190 DEG C, and screw rod turns Speed is 28r/min, natural cooling.

The raw material and instrument specifically used in the present embodiment 1 is as shown in table 3-4, according to A group, B group, the recipe ratio of C group Example three retable wood particles of preparation.

4 raw material sources of table and ratio list

5 instrument list of table

Test bars are made by national standard in the wooden particle of obtained modeling, A2 group, B2 group, every group of the C2 group batten of preparation three, Physical property, burning, the test of the aspect of aging four are carried out, the average value of test is taken, wherein the examination criteria of physical property is " modeling wood decorative panel GBT241 37-2009 "；In combustion testing, according to GB/T 2406-2008 test limits oxygen index (OI), according to GB/T2408-2008 tests linear burning rate；In burn-in test, it is old that ultraviolet acceleration by light is carried out to sample by ASTM G154-06 Change, every 12h is an ageing cycle, the condensation of ultraviolet light and 4h including 8h, samples and is bent after total 1500h The test of performance；

6 properties of product of table test list

Wherein, the standard of " modeling wood decorative panel GBT241 37-2009 " defined is as follows: moisture content≤2.0%, bending are strong Degree >=20MPa, bending modulus >=1800MPa, thickness swelling rate≤0.5%, product prepared by the present embodiment 2 are all satisfied The standard.

Claims (7)

1. a kind of prepare the method for moulding the wooden particle using spent resin, it is characterised in that:

S1: raw material preparation: prepare resin material, wood powder, ammonium polyphosphate, zinc borate；The source of the resin material obtains for commercial recovery The mixing spent resin material arrived selectes any as fixing resin, including PVC, PE, PP, epoxy resin, phenolic aldehyde of following resin Whether resin, the fixing resin content in mixing spent resin material described in sample detection if be lower than, are added work more than 50wt% The 50wt% of fixing resin summation is added to the content of the fixing resin up to mixing spent resin material and newly for the pure fixing resin of industry；

By weight, the resin material additive amount is 200 parts, and the wood powder additive amount is 50 parts, the ammonium polyphosphate additive amount It is 5-10 parts, the additive amount of the zinc borate is 0.5-2 parts；

S2: ready raw material raw material mixing: is mixed into 20-25min under the revolving speed of 800-1000rpm/min；Mixing is completed Afterwards, dry extremely mixing water content of matter is lower than 5wt% in 85-95 DEG C of environment；

S3: extruding pelletization: the drying composite that S2 is obtained is put into single screw extrusion machine, carries out extruding pelletization, extrusion parameter As follows: an area, 2nd area, three area's temperature are between 190-200 DEG C, and the temperature of head is between 180-190 DEG C, and screw speed is 28-32r/min, natural cooling.

2. a kind of according to claim 1 prepare the method for moulding the wooden particle using spent resin, it is characterised in that: in S1 step In, the wood powder be it is below any: Poplar Powder, pine powder, fir powder, the fixing resin be it is below any, PVC, PE, PP, epoxy resin, phenolic resin.

3. a kind of according to claim 1 prepare the method for moulding the wooden particle using spent resin, it is characterised in that: in S1 step In, it further include light stabilizer, antioxidant, lubricant, the light stabilizer is AM-101, GW-540, light stabilizer -622, three One of piperazine -5 is a variety of, and the antioxidant is antioxidant 1010, antioxidant 264, antioxidant 616, one in antioxidant BHT Kind or it is a variety of, the lubricant be stearic acid, stearate it is one or more.

4. a kind of according to claim 3 prepare the method for moulding the wooden particle using spent resin, it is characterised in that: by weight, The light stabilizer is triazine -5, and additive amount is 0.2-0.4 parts, and the antioxidant is antioxidant 1010, additive amount 0.3-0.5 Part, the lubricant uses zinc stearate, and additive amount is 0.5-1 parts.

5. a kind of according to claim 1 prepare the method for moulding the wooden particle using spent resin, it is characterised in that: the wood powder Partial size is between 80-100 mesh.

6. a kind of according to claim 1 prepare the method for moulding the wooden particle using spent resin, it is characterised in that: in the stirring of S2 In the process, silane coupler solution is added thereto by the way of spray, the silane coupler solution uses volume fraction For 5% KH550 be dissolved in ethyl alcohol be made.

7. a kind of according to claim 1 prepare the method for moulding the wooden particle using spent resin, it is characterised in that: the mixing is useless Resin material the preparation method is as follows:

Step 1: waste printed circuit board is disassembled out circuit substrate using hot wind dismantling machine；

Step 2: circuit substrate will be crushed by hammer crusher；

Step 3: sifting out partial size in 0.15mm particle below by electric vibrating, remaining particle is repeated into second step；

Step 4: grain sorting obtained by third step for metal charge and is mixed spent resin material using high pressure electrostatic separator.