CN108083725A - A kind of polymer-modified cement-based composite board and preparation method thereof - Google Patents
A kind of polymer-modified cement-based composite board and preparation method thereof Download PDFInfo
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- CN108083725A CN108083725A CN201711363700.7A CN201711363700A CN108083725A CN 108083725 A CN108083725 A CN 108083725A CN 201711363700 A CN201711363700 A CN 201711363700A CN 108083725 A CN108083725 A CN 108083725A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/024—Steam hardening, e.g. in an autoclave
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2038—Resistance against physical degradation
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of polymer-modified cement-based composite boards and preparation method thereof；Its raw material includes：The water of aggregate, cement, inorganic aggregate, macromolecule mixture, cementitious composite additive, citrate, antifoaming agent and certain mass.Each raw-material weight part is：16~29 parts of aggregate, 13~25 parts of cement, 28.4~49 parts of inorganic powder, 2~5 parts of macromolecule mixture, 12.6 parts of cementitious composite additive, 0.2~0.5 part of citrate, 0.05~0.1 part of antifoaming agent and water surplus；The manufacturing process of composite board is：Certain time is stirred through cement, inorganic aggregate, macromolecule mixture, cementitious composite additive, a small amount of antifoaming agent and water, aggregate, citrate, remaining antifoaming agent and water are added in afterwards and stirs evenly grouting behind shaft or drift lining shaping, and composite board is made after drying, fixed thick, polishing and steam press maintenance after the demoulding.The present invention possesses the advantages such as moulding process is simple, property is stable, wide application, pressure-proof and snap-resistent intensity height are low with water absorption rate.
Description
Technical field
The present invention relates to a kind of composite boards and preparation method thereof, belong to high molecular polymer and prepare composite board technology neck
Domain, more particularly to a kind of polymer-modified cement-based composite board and preparation method thereof.
Background technology
A kind of novel decorative finishing material that artificial stone has grown up since being the 1960s.Wherein used in
The difference of cementitious material, artificial stone have inorganic type artificial stone and organic type artificial stone.But due to present artificial stone
The shortcomings that material is difficult to overcome there are itself：The cementitious material (unsaturated-resin and acryl resin) of organic artificial's stone material
Characteristic, when ultraviolet light irradiation, acid and alkali corrosion, drying and watering cycle easy aged deterioration, also do not prevent fires, apply model
Enclose and be limited by very large, inorganic type artificial stone has many advantages, such as that durability is good, fire resistance is good, can apply to exterior wall and
The fire-protection ratings such as family require high finishing, but due to traditional inorganic type artificial stone such as " terrazzo " and traditional cement base
The shortcomings of artificial stone etc. is there are water absorption rate height, poor mechanical property, glossiness are low and decorative effect is poor, sets it is difficult to meet decoration
Meter requirement, at present its market application are few.
Cement base plate is a kind of between plasterboard and stone material, in physical mechanics property as a kind of synthesis of artificial stone
Can on be significantly better than plasterboard, and price well below stone material price and as the widely used Building wood of building trade
Material；But the shortcomings that traditional cement base plate is difficult to overcome there is also artificial stone in itself：Such as the substantial amounts of organic glue of addition
Or unsaturated-resin is as cementitious material so that product is intended to organic artificial's stone class, properties of product (color after polymer modification
Pool, texture and fire-protection rating etc.) undesirable can not meet actual production and requirement；Largely cement is used as single
Cementitious material, product property is just similar to terrazzo class Inorganic artificial stone, water absorption rate, physical and mechanical property and the people of product
Scope is all greatly limited their application on body-sensing official.
To added in cement base plate a certain amount of high molecular polymer be overcome a series of shortcomings and improving performance one
Item important channel, has obtained certain achievement for the research of polymer composite board at present.As the grand space development in science and technology in ZhangZhou has
A kind of Macromolecular composite plate being modified for plate of patent that Wang Xun of limit company et al. is announced and preparation method thereof is (open
Number：CN104926982A), using polymer such as acrylic acid or acrylate in the patent, then silane coupling agent and poly- second are added
The initiators collective effect such as enol, ammonium persulfate obtains composite board, the macromolecule composite wood that plate used in the invention is modified
It can be reacted in material with the calcium ion in plate, and cure the waterproof layer being had excellent performance in milk, but the invention macromolecule content
It is excessively high, gloss, texture and the fire resistance of product is caused all to cannot be guaranteed.Tongling four-way anti-corrosion waterproof Co., Ltd
A kind of novel artificial quartzite plate of patent that Zhu Wangen et al. is announced and preparation method thereof (publication number：CN107226637A),
Insert structure part in the flame retardant coating and clathrum that are set in patent utilization, and led to quartz crystal and auxiliary material using vacuum condition
Isomerization polymerization technology is crossed to be made, but the complex manufacturing technology of plate in itself, and the structure caused by the fixed thickness of plate later stage polishing
The destruction of part and clathrum can all reduce use scope and the service life of product.Liu Long really et al. announce a kind of cement base people of patent
Make stone and its production technology (publication number：CN101913806A), which is mixed into gelling system by cement and metaling, adds
Enter mobility and reaction rate that water-reducing agent and high-efficiency activated powder etc. improve cement, by vacuum high-pressure, remove bubble removing and compacting
Plate body so as to obtain the cement-based artificial stone of function admirable, but the product know-how it is simple utilize this individual gel of cement
Improvement substantially is not accomplished on the problems such as system, the mechanical property and water absorption rate of product.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, it is an object of the present invention to provide a kind of polymer-modified cement-based composite plates
Material, gained composite board possess the high advantages such as low with water absorption rate of rapid shaping, simple for process, wide application, pressure-proof and snap-resistent intensity.
It is a further object of the present invention to provide a kind of preparation methods of above-mentioned polymer-modified cement-based composite board.
In order to achieve the above object, the present invention uses following technical scheme：
The present invention provides a kind of polymer-modified cement-based composite board, is made of the raw material components of following parts by weight：
16~29 parts of aggregate, 13~25 parts of cement, 28.5~49 parts of inorganic aggregate, 2~5 parts of macromolecule mixture, cementitious composite is additional
12.6 parts of agent, 0.2~0.5 part of citrate, 0.05~0.1 part of antifoaming agent and water surplus.
Further, the grading of the aggregate uses：≤ 10 mesh account for 2~5 parts, and 10~20 mesh account for 8~16 parts, 20~40 mesh
Account for 6~8 parts；Aggregate uses single or a variety of mixing such as quartz sand, granite, feldspar, iron tailings, river sand and hornblend,
And SiO in aggregate2Component content >=75%.
Further, the cement type is Portland cement, composite Portland cement or fly ash silicate water
One or more in mud；Strength of cement grade uses label 32.5R, 42.5,42.5R, 52.5 and 52.5R one or more
It can；SO in cement3≤ 3.5%, the presetting period is not less than 45min, and final setting time is not more than 9h, and the ratio of mud of cement mortar uses
0.4~0.45.
Further, the inorganic aggregate component includes following raw material：SiO217~30 parts, CaO 9~14
Part, CaCO32~4 parts and 0.4~1 part of MgO；Except SiO2Remaining grain size≤0.074mm to gather materials outside；
Wherein SiO2Powder includes more than 7~9 parts of 40~80 mesh, 4~7 parts of 80~120 mesh and 325 mesh 6~14 parts；SiO2
Powder is obtained by 573 DEG C of high-temperature calcinations and heat preservation 1h, active component detection >=85%.
Further, the macromolecule mixture be alkali solubility styrene-acrylic resins and stearic mixture, firmly
Resin acid can also be substituted by Stearyl Amine, and alkali solubility styrene-acrylic resins also can be more than 200 by acid value measuring, molecular weight Mn
Between 3000~6000, molecular weight distribution is less than 2, and alkali solubility styrene-acrylic resins of the glass transition temperature more than 100 DEG C replace
Generation；Preparation method is as follows：
The alkali that the stearic acid provided using Hangzhou Oil and Fat Chemical Co., Ltd. and million sharp chemical industry (Hong Kong) Co., Ltds are provided
Dissolubility styrene-acrylic resins；
Hybrid technique is as follows：Into reaction kettle add in 40wt% (weight for accounting for total powder) diethylene glycol dimethyl ether and
The deionized water of 60wt% (weight for accounting for total powder), after stirring 10min with 200rpm mixing speeds, by stearic acid powder and
Alkali solubility styrene-acrylic resins powder adds in (stearic acid and alkali solubility Styrene And Chloroalkyl Acrylates tree using feeding raw materials from more than one places mode
The weight ratio of fat is 50:50~80:20), heating temperature stops stirring, continues to heat to 80~90 DEG C after pre- thermal agitation 30min
Treat that evaporation of the solvent is complete after to 160 DEG C of heat preservation 2h~3h, it is scattered that residue grinding, which is crossed after 200 mesh screens, and collects fine powder material
Uniform macromolecule mixture dry powder.
Further, the cementitious composite additive be by parts by weight for 2 parts of SM models water-reducing agents, 0.6 part of accelerator
(862 types or 8604 types), 2 parts of thickeners (tt935, tt936, Y203 and PAE) and 8 parts of polyvinyl alcohol (middle viscosity, molecules
Amount is less than 130000) under water bath condition, mixed preparing forms；Preparation method is as follows：
60wt% (accounting for total additive solution weight) deionized water is added in electromagnetic agitation pot, heating water bath is to 45 DEG C
When add in polyvinyl alcohol, accelerator and thickener continue to stir 6h (± 10min) under the conditions of 400rpm, pH value determination is 3.6
Water-reducing agent can be added in when between~3.8, continues to be heated to 50 DEG C, stir speed (S.S.) is constant, mixing time 1h (± 15min),
It should stop heating immediately between pH value determination is 2.1~2.2 under 40 DEG C of test temperatures and when viscosity is 130~160mPas, soon
Quickly cooling but obtains cementitious composite additive.
Further, solid content >=50% of the cementitious composite additive obtained.
Further, the antifoaming agent is that silicone emulsion, polyoxyethylene polyoxypropylene pentaerythrite ether or polyoxypropylene are sweet
Oily ether.
On the other hand, the present invention provides the preparation method of above-mentioned polymer-modified cement-based composite board, according to the following steps
It carries out：
1) aggregate of different meshes, cement and inorganic aggregate are divided into two groups and are carried respectively by formula through bucket elevator respectively
Take to batch mixer that be transported to two Multi-layer material-storing cabinets again after mixing spare；
2) when producing, cement and inorganic aggregate mixture are first delivered to through belt conveyer in agitated kettle, add in high score
Sub- mixture, cementitious composite additive, the water of a part of antifoaming agent and certain mass are stirred together for 20~30min, then by aggregate,
Citrate and remaining antifoaming agent add in 10~15min of stirring to uniformly rear injection mould molding；
3) through spontaneously drying after the green body demoulding, by fixed thick polishing, reaction in steam press maintenance case is delivered to afterwards and is cured, Gu
Natural curing obtains composite board after change.
Further, antifoaming agent is added dropwise at twice in step 2), and quantity is added dropwise and determines regarding actual temperature, when T≤25 DEG C
4~5 drops are added dropwise, 5~6 drops are added dropwise when 26 DEG C≤T≤35 DEG C, 7 drops or more can be added dropwise when T >=36 DEG C；
Further, green body is transported to after fixed thick polishing in steam press maintenance room in step 3), and being passed through steam pressure is
0.8~1MPa, the steam curing that vapor (steam) temperature is 160~180 DEG C, curing time is 7~8h, and room temperature conserves 7d after the completion of maintenance
It can be packaged and dispatch from the factory；The high-temperature steam recycles calcining SiO by circulation2The heat of loss obtains afterwards.
Compared with prior art, the invention has the advantages that：
1) polymer-modified cement-based composite board of the present invention, through cement, inorganic aggregate, macromolecule mixture, water
Mud compound additive, a small amount of antifoaming agent and water stirring certain time, afterwards add in aggregate, citrate, remaining antifoaming agent and
Water stirs evenly grouting behind shaft or drift lining shaping, is made after the demoulding after drying, fixed thick, polishing and steam press maintenance, possesses rapid shaping, technique
Simply, the high advantages such as low with water absorption rate of wide application, pressure-proof and snap-resistent intensity.
2) present invention combines high molecular polymer in physics side on the basis of aggregate and powder form tightly packed kenel
Face and inorganic material two aspects in terms of the chemistry under autoclaved condition form complex cementitious system, reduce plate water absorption rate and
Whole compactness is improved, so as to greatly strengthen the wear-resisting property of the physical and mechanical property of plate and surface.
Specific embodiment
The invention discloses a kind of polymer-modified cement-based composite boards and preparation method thereof.The polymer-modified cement
The raw material weight percentage selection of base composite board and formula are as follows：
Aggregate 16%~29%, cement 13%~25%, inorganic aggregate 28.4%~49%, macromolecule mixture 2%~
5%, cementitious composite additive 12.6%, citrate 0.2~0.5%, antifoaming agent 0.05~0.1% and surplus are water.
The preparation method of above-mentioned polymer-modified cement-based composite board, comprises the following steps：
1) cement and inorganic aggregate are extracted respectively with fighter's elevator by formula, the aggregate of different gradation is transported to batch mixing
In machine after mixing, then it is transported in two Multi-layer material-storing cabinets；Strength of cement grade is using label 32.5R, 42.5,42.5R, 52.5
With 52.5R one or more；
2) raw material is unloaded through belt conveyer into agitated kettle by formula through discharge valve in production, add in deployed
Macromolecule mixture, cementitious composite additive, the water of a small amount of antifoaming agent (3~5 drop) and certain mass is stirred together for 20~
30min, then aggregate, citrate and residue antifoaming agent (1~2 drop) are added in into 10~15min of stirring to uniformly rear injection mold
Shaping；
3) through natural drying for 24 hours~48h after the green body demoulding, then by fixed thick polishing, conveyed after spontaneously drying for 24 hours~48h
Into steam press maintenance case, vapor (steam) temperature is set as 160~180 DEG C, and steam pressure is 0.8~1MPa, and room temperature is supported after conserving 7~8h
Shield 7d can obtain plate, can dispatch from the factory after the processes such as follow-up art designing and packing shop.
To solve in cement base plate to undesirable, the present invention of product property after single gelling system and polymer modification
Used technical principle, the measure taken have the following：
First, using the aggregate and powder of continuous grading.
The continuous grading and addition of aggregate and powder is obtained by calculation so that the accumulation of aggregate and powder in plate
Form is similar or close to closestpacking form：On the one hand the gap of product is reduced, on the other hand can also reduce macromolecule
The dosage of other cementitious materials such as polymer and cement, it is not only environmentally protective but also reduce production cost.
And skeleton function and the stress transfer effect of aggregate also provide cement cementitious system higher physical strength.
2nd, using high molecular polymer as additive.High molecular polymer selected stearic acid and alkali solubility styrene-
The mixed system of acrylic acid and a kind of cementitious composite additive of allotment.
Using stearic acid and the mixed system of alkali solubility Styrene And Chloroalkyl Acrylates：The system because its dissolve in after can disperse to strike a bargain
Join net structure and air hardening is very fast, can cause plate green body in early stage formative stage, double adhesive and induration with cement
Early stage has higher intensity, and its heat safe feature, it is allow to be embodied in the steam press maintenance stage in later stage resistance to well
Hot and stability；Simultaneously dispersed particle later stage moisture completely by aquation or it is dry lose after can be coated on cement and other
Aggregate outer wall surface forms good fish tail and waterproof layer, so block moisture inside crystal structure by capillary channel, rise
The effect of the compactness and water proofing property that improve cement products is arrived.
Using cementitious composite additive, ingredient is water-reducing agent, accelerator, thickener and polyvinyl alcohol.Pass through content
Control causes water-reducing agent to can be very good to improve the dispersiveness of cement, increases the specific surface area of hydrated cementitious, so as to improve cement
Hydration rate in whipping process；The emulsion dispersion property of polymer substance can be improved by adding in a certain amount of thickener, also may be used
To improve the dispersiveness of cement slurry and hydration rate；More importantly these high molecular polymers can cause cement cementitious system
There is higher mobility；In addition polymeric membrane is gradually formed after polymer disperses in hydration process or is gathered into
Grain can disperse with uniform moisture and the surface of cement gel body is covered in after later stage moisture is lost completely by aquation or drying
Or the pore of filling concrete hyrate；By block and landfill effect on the one hand greatly reduce in plate be harmful to hole number
On the other hand amount has blocked the connection of hole in plate, and then has improved the capillary structure of hardened paste on a large scale, reach
Reduce the purpose of the plate porosity and water absorption rate.
After the addition of high molecular polymer, the polymeric membrane or particle that are formed after scattered or polymerization can be in moisture completely by water
Change or the dry entringite lost afterwards gradually by hydrated cementitious generation is covered；Entringite is in strip or needle-shaped, is easily staggeredly given birth to
It is long, after polymeric membrane or particle are covered in surface or are filled in the hole that entringite formed, it can greatly increase calcium alum
The destruction difficulty of stone, macro manifestations greatly improve for the physical and mechanical property of plate；And it the soft and moist property that polymer has and stirs
The toughness and bending strength of cement matrix can also be increased by mixing the netted membrane structure formed after disperseing；Wherein various organic additives add
It is dispersed in slurry to enter to improve cement granules, increases the contact surface of cement granules and water, abundant aquation, so as to greatly
Improve the performance of product.
3rd, using steam press maintenance means.
By adding a certain amount of inorganic aggregate (CaO, SiO2、CaCO3And MgO), utilize the calcium in the environment of steam press maintenance
Hydro-thermal reaction generation C-S-H (hydrated calcium silicate) can occur for material and siliceous material.
CaO, cement and SiO2Powder lot dispersing is in aggregate gap and hole, CaO and water in high temperature and pressure thermal and hydric environment
Mud gradually dissolving and and alkaline environment in SiO2Reaction generation C-S-H, most of C-S-H is in gelatinous, gel on the one hand meeting
Buffer layer and cross-linked layer are formed between bulky grain, on the other hand loose porous gel can be also filled in hole, play resistance
Plug and the effect of " sponge "；Small part, which crystallizes preferable C-S-H, simultaneously can be changed into tobermorite, and these two aspects can all improve
The physical and mechanical property and compactness of plate.
In addition calcium silicon system reaction generation C-S-H can be rapidly promoted with it to support in steam press maintenance environment after MgO aquations
The transformation of shellfish mullite, simultaneously because containing certain C in cement4AF(4CaO·Al2O3·Fe2O3) and C3A(3CaO·
Al2O3), it can hinder the progress of above-mentioned reaction in aquation, and the MgO added in also can preferentially and Al2O3Reaction generation property is stablized
And the pyrope that particle is tiny, pyrope meeting and CaCO3It is filled in together in gel rubber system and plays a part of stress transfer,
Result in formation of inorganic gel networks, on the one hand closely combine surrounding hydrolysis product of cement and quartz sand, the opposing party looks unfamiliar
Into C-S-H in the form of different, can be coated on large particle surface prevent hydrone into or by remaining gap
It is blocked with capillary channel.
The present invention combines high molecular polymer in physics aspect on the basis of aggregate and powder form tightly packed kenel
Two aspects form complex cementitious system in terms of the chemistry under autoclaved condition with inorganic material, reduce the water absorption rate of plate and carry
High whole compactness, so as to greatly strengthen the wear-resisting property of the physical and mechanical property of plate and surface.
The invention of the application is further illustrated with reference to example, but embodiment is not construed as the limit to right of the present invention
It is fixed.
Raw material are counted in parts by weight, and the unit of following parts by weight can be g or kg：
Embodiment 1
A kind of polymer-modified cement-based composite board includes each component of following parts by weight：
16 parts of skeletal grains (2 parts≤10 mesh, 8 part of 20~20 mesh, 6 part of 20~40 mesh), and 42.95 parts of inorganic aggregates (10 parts of CaO, 2
Part CaCO3, 0.95 part of MgO, SiO2Powder：9 part of 40~80 mesh, 7 part of 80~120 mesh, 14 parts >=325 mesh), 25 parts of cement (labels
42.5 Portland cement), 3 parts of macromolecule mixtures are (using the mixing of Stearyl Amine and alkali solubility Styrene And Chloroalkyl Acrylates
System), 12.6 parts of cementitious composite additives (solid content 50%), 0.4 part of sodium citrate, 0.05 part of antifoaming agent (silicone emulsion),
The slurry ratio of mud uses 0.4, and amount of water is 8.4 parts of water.
The preparation method of above-mentioned Stearyl Amine and alkali solubility Styrene And Chloroalkyl Acrylates mixed system is：
The diethylene glycol dimethyl ether of 40wt% (weight for accounting for total powder) is added in into reaction kettle and 60wt% (accounts for total powder
Weight) deionized water, after stirring 10min with 200rpm mixing speeds, by stearic acid powder and alkali solubility styrene-the third
Olefin(e) acid the tree powder body uses feeding raw materials from more than one places mode to add in, and (weight ratio of stearic acid and alkali solubility styrene-acrylic resins is 50:
50), heating temperature stops stirring to 80 DEG C after pre- thermal agitation 30min, continues to treat solvent after being heated to 160 DEG C of heat preservation 134min
Evaporation is complete, and it is finely dispersed macromolecule mixture dry powder that residue grinding, which is crossed, and collects fine powder material after 200 mesh screens.
It by parts by weight is 2 parts of SM models water-reducing agents that the cementitious composite additive, which is, 0.6 part of accelerator, 8604,2 parts of thickenings
Under water bath condition, mixed preparing forms for agent tt936 and 8 parts of polyvinyl alcohol；The preparation method of the cementitious composite additive is such as
Under：
60wt% (accounting for total additive solution weight) deionized water is added in electromagnetic agitation pot, heating water bath is to 45 DEG C
When add in polyvinyl alcohol, accelerator and thickener continue to stir 6h under the conditions of 400rpm, pH value determination can be added at 3.8
Water-reducing agent continues to be heated to 50 DEG C, and stir speed (S.S.) is constant, mixing time 1h, when pH value determination is 2.2 and viscosity is 160mPas
It should stop heating immediately, be quickly cooled down to obtain cementitious composite additive.
The preparation process of polymer-modified cement-based composite board is：
(1) mixed powder for unloading 25 parts of cement and 42.95 parts of inorganic aggregates from Multi-layer material-storing cabinet by formula is transmitted through belt
To agitated kettle, 3 parts of macromolecule mixtures and 12.6 parts of cementitious composite additives are then added in, add in 4 drop antifoaming agent and 6.4 parts of water
20min is stirred together；
(2) 16 parts of skeletal grains and remaining 2 drop antifoaming agent and 2 parts of water are added in agitated kettle again and stir 10min to equal
After even, die for molding is injected；
(3) green body after shaping and demoulding spontaneously dries 36h in room temperature environment, using natural after fixed thick and polishing production line
Dry 36h obtains semi-finished product；
(4) semi-finished product are delivered in steam press maintenance case after, set vapor (steam) temperature as 180 DEG C, steam pressure 1MPa, are supported
The shield time is 7h；
(5) natural curing 7d is taken out again after the completion of maintenance and can be prepared by finished goods.
Obtained composite board is according to national standard JC/T908-2013, GB/T18601-2009 and GB8624-2006 couple
Correlated performance is detected, and obtains compression strength average value by pressure-proof and snap-resistent loading test as 113.7MPa, bending strength is
19MPa, wearability 5.3g/cm2, Mohs' hardness 6, water absorption rate 48h is 0.09%, mirror surface luster 75, fire-protection rating A1,
Its performance refers to table 1.
Embodiment 2
A kind of polymer-modified cement-based composite board includes each component of following parts by weight：
21 parts of 5 parts≤10 mesh of skeletal grain, 10 part of 20~20 mesh, 6 part of 20~40 mesh), and 49 parts of inorganic aggregates (14 parts of CaO, 4 parts
CaCO3, 1 part of MgO, SiO2Powder：9 part of 40~80 mesh, 7 part of 80~120 mesh, 14 parts >=325 mesh), 13 parts of cement (label 42.5R
Portland fly ash cement), 4 parts of macromolecule mixtures are (using the compound of modified stearic acid and alkali solubility Styrene And Chloroalkyl Acrylates
System), 12.6 parts of cementitious composite additives (solid content 53%), 0.3 part of sodium citrate, 0.1 part of antifoaming agent (polyoxyethylene polyoxy
Propylene pentaerythrite ether), the slurry ratio of mud uses 0.45, and amount of water is 6.6 parts of water.
The preparation method of above-mentioned stearic acid and alkali solubility benzene second-allyl olefin(e) acid mixed system is：
The diethylene glycol dimethyl ether of 40wt% (weight for accounting for total powder) is added in into reaction kettle and 60wt% (accounts for total powder
Weight) deionized water, after stirring 10min with 200rpm mixing speeds, by stearic acid powder and alkali solubility styrene-the third
Olefin(e) acid the tree powder body uses feeding raw materials from more than one places mode to add in, and (weight ratio of stearic acid and alkali solubility styrene-acrylic resins is 80:
20), heating temperature stops stirring to 90 DEG C after pre- thermal agitation 30min, continues to treat solvent after being heated to 160 DEG C of heat preservation 177min
Evaporation is complete, and it is finely dispersed macromolecule mixture dry powder that residue grinding, which is crossed, and collects fine powder material after 200 mesh screens.
It by parts by weight is 2 parts of SM models water-reducing agents that the cementitious composite additive, which is, 0.6 part of accelerator, 862,2 parts of thickenings
Under water bath condition, mixed preparing forms for agent Y203 and 8 parts of polyvinyl alcohol；The preparation method of the cementitious composite additive is such as
Under：
60wt% (accounting for total additive solution weight) deionized water is added in electromagnetic agitation pot, heating water bath is to 45 DEG C
When add in polyvinyl alcohol, accelerator and thickener continue to stir 6h under the conditions of 400rpm, pH value determination can be added at 3.6
Water-reducing agent continues to be heated to 50 DEG C, and stir speed (S.S.) is constant, mixing time 1h, when pH value determination is 2.1 and viscosity is 130mPas
It should stop heating immediately, be quickly cooled down to obtain cementitious composite additive.
The preparation process of polymer-modified cement-based composite board is：
(1) mixed powder that 13 parts of cement and 49 parts of inorganic aggregates are unloaded from Multi-layer material-storing cabinet by formula is transmitted to through belt and stirs
Pot is mixed, then adds in 4 parts of macromolecule mixtures and 12.6 parts of cementitious composite additives, adds in 5 drop antifoaming agent and 5.6 parts of water together
Stir 25min；
(2) 21 parts of skeletal grains and remaining 1 drop antifoaming agent and 1 part of water are added in agitated kettle again and stir 15min to equal
After even, die for molding is injected；
(3) green body after shaping and demoulding spontaneously dries for 24 hours in room temperature environment, using natural after fixed thick and polishing production line
Drying obtains semi-finished product for 24 hours；
(4) semi-finished product are delivered in steam press maintenance case after, set vapor (steam) temperature as 160 DEG C, steam pressure 0.8MPa,
Curing time is 8h；
(5) natural curing 7d can be prepared by finished goods again after the completion of maintenance.
Obtained composite board is according to national standard JC/T908-2013, GB/T18601-2009 and GB8624-2006 couple
Correlated performance is detected, and obtains compression strength average value by pressure-proof and snap-resistent loading test as 104.2MPa, bending strength is
24MPa, wearability 6.8g/cm2, Mohs' hardness 6, water absorption rate 48h is 0.14%, mirror surface luster 80, fire-protection rating A1,
Its performance refers to table 1.
Embodiment 3
A kind of polymer-modified cement-based composite board includes each component of following parts by weight：
29 parts of skeletal grains (5 parts≤10 mesh, 16 part of 20~20 mesh, 8 part of 20~40 mesh), and 38.8 parts of inorganic aggregates (10 parts of CaO, 2
Part CaCO3, 0.8 part of MgO, SiO2Powder：8 part of 40~80 mesh, 7 part of 80~120 mesh, 11 parts >=325 mesh), 15 parts of cement (labels
The composite Portland cement of 42.5R), 4 parts of high molecular polymers (stearic acid and alkali solubility Styrene And Chloroalkyl Acrylates compound system),
12.6 parts of cementitious composite additives (solid content 51%), 0.5 part of sodium citrate, 0.1 part of antifoaming agent (polypropylene glycerol aether), slurry
The body ratio of mud uses 0.45, and it is 5.3 parts of water to add water inventory.
The preparation method of above-mentioned stearic acid and alkali solubility benzene second-allyl olefin(e) acid mixed system is：
The diethylene glycol dimethyl ether of 40wt% (weight for accounting for total powder) is added in into reaction kettle and 60wt% (accounts for total powder
Weight) deionized water, after stirring 10min with 200rpm mixing speeds, by stearic acid powder and alkali solubility styrene-the third
Olefin(e) acid the tree powder body uses feeding raw materials from more than one places mode to add in, and (weight ratio of stearic acid and alkali solubility styrene-acrylic resins is 60:
40), heating temperature stops stirring to 85 DEG C after pre- thermal agitation 30min, continues to treat solvent after being heated to 160 DEG C of heat preservation 154min
Evaporation is complete, and fine powder material is collected after residue grinding is crossed 200 mesh screens.
It by parts by weight is 2 parts of SM models water-reducing agents that the cementitious composite additive, which is, 0.6 part of accelerator, 8604,2 parts of thickenings
Under water bath condition, mixed preparing forms for agent PAE and 8 parts of polyvinyl alcohol；The preparation method of the cementitious composite additive is as follows：
60wt% (accounting for total additive solution weight) deionized water is added in electromagnetic agitation pot, heating water bath is to 45 DEG C
When add in polyvinyl alcohol, accelerator and thickener continue to stir 60min under the conditions of 400rpm, pH value determination is at 3.6
It adds in water-reducing agent to continue to be heated to 50 DEG C, stir speed (S.S.) is constant, and mixing time 1h, pH value determination is 2.1 and viscosity is
It should stop heating immediately during 140mPas, be quickly cooled down to obtain cementitious composite additive.
The preparation process of polymer-modified cement-based composite board is：
(1) mixed powder for unloading 15 parts of cement and 38.8 parts of inorganic aggregates from Multi-layer material-storing cabinet by formula is transmitted to through belt
Then agitated kettle adds in 4 parts of macromolecule mixtures and 12.6 parts of cementitious composite additives, add in 4 drop antifoaming agent and 4.3 parts of water one
Play stirring 30min；
(2) 29 parts of skeletal grains and remaining 3 drop antifoaming agent and 1 part of water are added in agitated kettle again and stir 15min to equal
After even, die for molding is injected；
(3) green body after shaping and demoulding spontaneously dries 36h in room temperature environment, using natural after fixed thick and polishing production line
Drying obtains semi-finished product for 24 hours；
(4) semi-finished product are delivered in steam press maintenance case after, set vapor (steam) temperature as 180 DEG C, steam pressure 1MPa, are supported
The shield time is 7h；
(5) drying is taken out after the completion of maintenance and can be prepared by finished goods.
It is effete test embodiment content below.
Effete test embodiment
Composite board obtained by embodiment 1-3 according to national standard JC/T908-2013, GB/T18601-2009 and
GB8624-2006 is detected correlated performance, and obtaining compression strength average value by pressure-proof and snap-resistent loading test is
117.6MPa, bending strength 27MPa, wearability 5.2g/cm2, Mohs' hardness 7, mirror surface luster 75, fire-protection rating
For A, water absorption rate 48h is 0.16%, and performance refers to table 1.
1 end properties table of table and testing standard reference table
As it can be seen from table 1 polymer-modified cement-based composite board made from above-described embodiment 1-3 meet it is a series of excellent
Benign matter, and have in terms of physical and mechanical property and water absorption rate and be significantly improved, so it is with good market prospects.
The invention is not limited in the above embodiment, if not departing from the present invention to the various changes or modifications of the present invention
Spirit and scope, if these modification and variations belong within the scope of the claim and equivalent technologies of the present invention, then this hair
It is bright to be also intended to comprising these changes and change.
Claims (10)
1. a kind of polymer-modified cement-based composite board, which is characterized in that be made of the raw material components of following parts by weight：
16~29 parts of aggregate；
13~25 parts of cement；
28.4~49 parts of inorganic aggregate；
2~5 parts of macromolecule mixture；
12.6 parts of cementitious composite additive；
0.2~0.5 part of citrate；
0.05~0.1 part of antifoaming agent；
Water surplus.
2. polymer-modified cement-based composite board according to claim 1, it is characterised in that：The grading of the aggregate is adopted
With：≤ 10 mesh account for 2~5 parts, and 10~20 mesh account for 8~16 parts, and 20~40 mesh account for 6~8 parts；Aggregate uses quartz sand, granite, length
The single such as stone, iron tailings, river sand and hornblend or a variety of mixing, and SiO in aggregate2Component content >=75%.
3. polymer-modified cement-based composite board according to claim 1, it is characterised in that：The cement type is general
One or more in logical portland cement, composite Portland cement or Portland fly ash cement；SO in cement3≤ 3.5%,
Presetting period is not less than 45min, and final setting time is not more than 9h, and the ratio of mud of cement mortar uses 0.4~0.45.
4. polymer-modified cement-based composite board according to claim 1, it is characterised in that：The inorganic aggregate component
Including following raw material：
SiO217~30 parts, 9~14 parts of CaO, CaCO32~4 parts and 0.4~1 part of MgO；Except SiO2Remaining grain to gather materials outside
Footpath≤0.074mm；
Wherein SiO2Powder includes more than 7~9 parts of 40~80 mesh, 4~7 parts of 80~120 mesh and 325 mesh 6~14 parts；SiO2Powder
It is obtained by 573 DEG C of high-temperature calcinations and heat preservation 1h, active component detection value >=85%.
5. polymer-modified cement-based composite board according to claim 1, it is characterised in that：The macromolecule mixture
For stearic acid or Stearyl Amine and the mixture of alkali solubility styrene-acrylic resins；The alkali solubility Styrene And Chloroalkyl Acrylates tree
Fat can be that acid value measuring is more than 200, and molecular weight Mn is between 3000~6000, and molecular weight distribution is less than 2, and glass transition temperature is more than
100 DEG C of alkali solubility styrene-acrylic resins；
Hybrid technique is as follows：
The diethylene glycol dimethyl ether of 40wt% (weight for accounting for total powder) is added in into reaction kettle and 60wt% (accounts for the weight of total powder
Amount) deionized water, after stirring 10min with 200rpm mixing speeds, by stearic acid powder and alkali solubility Styrene And Chloroalkyl Acrylates
The tree powder body uses feeding raw materials from more than one places mode to add in, and (weight ratio of stearic acid and alkali solubility styrene-acrylic resins is 50:50~
80:20), heating temperature stops stirring to 80~90 DEG C after pre- thermal agitation 30min, continues to be heated to 160 DEG C, keeps the temperature 2h~3h
After treat that evaporation of the solvent is complete, it is that finely dispersed macromolecule mixes that residue grinding, which is crossed after 200 mesh screens, and collects fine powder material
Object dry powder.
6. polymer-modified cement-based composite board according to claim 1, it is characterised in that：The cementitious composite is additional
It by parts by weight is 2 parts of SM models water-reducing agents that agent, which is, 0.6 part of accelerator (862 types or 8604 types), 2 parts of thickeners (tt935,
Tt936, Y203 and PAE) and 8 parts of polyvinyl alcohol (middle viscosity, molecular weight are less than 130000) under water bath condition, mix
Conjunction is formulated；Preparation method is as follows：
60wt% (accounting for total additive solution weight) deionized water is added in electromagnetic agitation pot, is added when heating water bath is to 45 DEG C
Enter polyvinyl alcohol, accelerator and thickener to continue to stir 6h (± 10min) under the conditions of 400rpm, pH value determination is 3.6~3.8
Between when can add in water-reducing agent, continue to be heated to 50 DEG C, stir speed (S.S.) is constant, mixing time 1h (± 15min), 40 DEG C survey
It should stop heating immediately between pH value determination is 2.1~2.2 at a temperature of examination and when viscosity is 130~160mPas, be quickly cooled down
Obtain cementitious composite additive.
7. polymer-modified cement-based composite board according to claim 1, it is characterised in that：The cement obtained is answered
Close solid content >=50% of additive.
8. polymer-modified cement-based composite board according to claim 1, it is characterised in that：The antifoaming agent is emulsification
Silicone oil, polyoxyethylene polyoxypropylene pentaerythrite ether or polypropylene glycerol aether.
9. the preparation method of the polymer-modified cement-based composite board any one of claim 1-8, which is characterized in that
It carries out according to the following steps：
1) respectively by the aggregate of different meshes, cement and inorganic aggregate be divided into two groups respectively by formula through bucket elevator extract to
It is spare that batch mixer is transported to two Multi-layer material-storing cabinets again after mixing；
2) when producing, cement and inorganic aggregate mixture are first delivered to through belt conveyer in agitated kettle, are added in macromolecule and are mixed
It closes object, cementitious composite additive, the water of a part of antifoaming agent and certain mass and is stirred together for 20~30min, then by aggregate, lemon
Hydrochlorate and remaining antifoaming agent add in 10~15min of stirring to uniformly rear injection mould molding；
3) through spontaneously drying after the green body demoulding, by fixed thick polishing, reaction in steam press maintenance case is delivered to afterwards and is cured, after curing
Natural curing obtains composite board.
10. the preparation method of polymer-modified cement-based composite board according to claim 9, it is characterised in that：Step
2) in, antifoaming agent is added dropwise at twice, and quantity is added dropwise and determines regarding actual temperature, 4~5 drops is added dropwise when T≤25 DEG C, as 26 DEG C≤T
5~6 drops are added dropwise at≤35 DEG C, 7 drops or more can be added dropwise when T >=36 DEG C；
In step 3), green body is transported to after fixed thick polishing in steam press maintenance room, is passed through steam pressure as 0.8~1MPa, steaming
Stripping temperature is 160~180 DEG C of steam curing, and curing time is 7~8h, and room temperature maintenance 7d can be packaged out after the completion of maintenance
Factory；The high-temperature steam recycles calcining SiO by circulation2The heat of loss obtains afterwards.
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| CN108890951A (en) * | 2018-08-23 | 2018-11-27 | 瑞典戴铂国际有限公司 | One kind being used for hole blister high molecular polymer foam core material surface-sealing equipment and technique |
| CN109206080A (en) * | 2018-09-25 | 2019-01-15 | 重庆新格有色金属有限公司 | It is a kind of using aluminium ash and waste residue manufacture inorganic artificial stone and its manufacturing method |
| CN111517728A (en) * | 2020-05-29 | 2020-08-11 | 清华大学 | Composition, prefabricated part and preparation method thereof |
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| CN104177031A (en) * | 2014-08-31 | 2014-12-03 | 李小海 | Foam concrete building blocks and production method thereof |
| CN106630878A (en) * | 2016-12-29 | 2017-05-10 | 常州工程职业技术学院 | High-temperature-resistant wall material produced by utilizing waste glass particles and preparation method of wall material |
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| EP2298709A1 (en) * | 2009-09-18 | 2011-03-23 | Omya Development AG | Concrete mix having anti-efflorescence properties and method of making concrete using the same |
| CN104177031A (en) * | 2014-08-31 | 2014-12-03 | 李小海 | Foam concrete building blocks and production method thereof |
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| CN108890951A (en) * | 2018-08-23 | 2018-11-27 | 瑞典戴铂国际有限公司 | One kind being used for hole blister high molecular polymer foam core material surface-sealing equipment and technique |
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| CN109206080A (en) * | 2018-09-25 | 2019-01-15 | 重庆新格有色金属有限公司 | It is a kind of using aluminium ash and waste residue manufacture inorganic artificial stone and its manufacturing method |
| CN111517728A (en) * | 2020-05-29 | 2020-08-11 | 清华大学 | Composition, prefabricated part and preparation method thereof |
| CN111517728B (en) * | 2020-05-29 | 2021-11-16 | 清华大学 | Composition, prefabricated part and preparation method thereof |
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