CN105060763A - Cement plate composite modifier - Google Patents

Cement plate composite modifier Download PDF

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Publication number
CN105060763A
CN105060763A CN201510454314.3A CN201510454314A CN105060763A CN 105060763 A CN105060763 A CN 105060763A CN 201510454314 A CN201510454314 A CN 201510454314A CN 105060763 A CN105060763 A CN 105060763A
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China
Prior art keywords
cement plate
composite modifier
water
plate composite
cement
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Pending
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CN201510454314.3A
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Chinese (zh)
Inventor
邝清林
杨卓舒
史红彬
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Zhuoda New Material Technology Group Co Ltd
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Zhuoda New Material Technology Group Co Ltd
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Priority to CN201510454314.3A priority Critical patent/CN105060763A/en
Publication of CN105060763A publication Critical patent/CN105060763A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a cement plate composite modifier, and belongs to the field of composite modifier production. The composite modifier is composed of a hardening agent, an early strength agent, an accelerator, a water-retaining agent, a water reducer, a water repellent, and polymer. Compared with the prior art, the provided composite modifier can solve the problems that the demoulding strength of cement plate is low, the setting time is long, the cement plate secretes water, and the cement plate is brittle; moreover, the modifier can avoid or reduce the risk that the steel bars are corroded by chlorine ions and sulfate ions; at the same time, the activity of low-calcium fly ash is effective excited, a scheme is provided for the large mixing amount utilization of low-calcium fly ash, and the product cost is reduced.

Description

A kind of cement plate composite modifier
Technical field
The invention belongs to composite modifier field, particularly relate to a kind of cement plate composite modifier.
Background technology
In recent years, domestic and international New Building Materials develop rapidly towards the direction of high-strength light, energy-conserving profit waste, are that wood fibre refinforced cement plate (abbreviation cement plate) such as cement sawdust plate, the cement-bonded wood chipboard etc. of strongthener are widely used in buildings inside and outside wall board, partition plate, floor etc. with vegetable fibre.Compared with traditional material of construction, wood fibre refinforced cement plate has the advantages such as intensity is high, good weatherability, moistureproof and waterproof, sound-insulating and heat-insulating, fire-retardant, anti-corrosive antibacterial, machining property are good (can saw, can bore, can follow closely, can plane, can punch, can slot), easy decoration, in use without free formaldehyde release, be the New Building Materials that state key is promoted.In addition, in cement sawdust plate, suitably mix some trade wastes such as flyash, slag substitute the alkalescence that cement not only can reduce cement slurry, slow down the corrosion to strongtheners such as glass fibre, improve the visual appearance of product, reduce costs, but also the object of solid waste utilization, energy-conserving and environment-protective can be reached.
The composition of vegetable fibre mainly contains Mierocrystalline cellulose, hemicellulose and xylogen etc., silicate cement class inorganic coagulation material mostly is alkalescence, alkali can make hemicellulose that hydrolysis occurs and form the materials such as pentosan, anticoagulation is produced to the sclerosis of inorganic coagulation material, and be difficult to realize hot water or chemical extracting in producing, thus select suitable properties-correcting agent to become the focus of current research to the consistency improving vegetable fibre and silicate cement.
The main component of flyash is active silica and activated alumina, to meet after water itself and non-sclerous, but at Ca (OH) 2in solution, its activity can be excited, and hydration reaction occurs and forms gelling material, thus produce intensity, when doping quantity of fly ash is more than 30%, and the Ca (OH) that hydrated reaction of cement produces 2the active approach exhaustion of solution or concentration lower time, the activeconstituents in flyash can not be excited completely, causes the mechanical properties decrease of goods.Therefore, when doping quantity of fly ash is higher, the excitation of admixture to flyash activity must be considered.
Prior art is CN101117005A just like publication number, provides a kind of cement-bonded wood chipboard and production method thereof, and this cement-bonded wood chipboard is made up of following raw material: wood wool (over dry wood shavings) 15-35; High-calcium fly ass 15-45; Cement 30-55; Also comprise water glass 1-3; Calcium chloride 0.3-1.8 and auxiliary agent 0.1-2.Wherein wood wool is prepared from by fast growing wood, brush wood or shrub, and in high-calcium fly ass, the content of calcium oxide is 15%-35%, at least one in auxiliary agent selective chlorination sodium, plaster stone, calcium hydroxide, sodium sulfate, ligninsulfonate, trolamine.
But there are two shortcomings in prior art one: 1. the properties-correcting agent that this patent uses has sodium-chlor, sodium sulfate, the chlorion introduced and sulfate ion all have corrosion to reinforcing bar, and sodium sulfate volume too much can produce the accumulation of salt in the surface soil, for the application of wood fibre refinforced cement plate in assembled architecture hides some dangers for, lignin sulfonic acid salt water reducer amount of air entrainment is comparatively large and have certain latent, is unfavorable for the early strength development of cement plate.2. in this patent, select to adopt calcium oxide content at the high-calcium fly ass of 15%-35% at the starting material of cement plate, the activity of high-calcium fly ass is much higher than Class F fly ash (calcium oxide content is less than 8%), and the early strength for raising cement plate is favourable.But the flyash more than 90% of China's power plant emission is Class F fly ash, be unfavorable for the extensive utilization of flyash in cement plate.
Prior art two such as publication number is CN102101309A, there is provided in a kind of cement-bonded wood chipboard and preparation method thereof, take silicate cement as consolidating material, with wood particle or stalk for stiffening web material, its raw material consists of: dry wood wool or stalk 10-40 part, flyash 18-50 part, cement 30-60 part, water glass 1-3 part, calcium oxide 0.3-1.8 part, auxiliary agent 0.1-2 part, auxiliary agent is one or more in sodium-chlor, plaster stone, calcium hydroxide, sodium sulfate.
But there is following shortcoming in prior art two: the properties-correcting agent that this patent uses has sodium-chlor, sodium sulfate, the chlorion introduced and sulfate ion all have corrosion to reinforcing bar, and sodium sulfate volume too much can produce the accumulation of salt in the surface soil, for cement plate application under construction hides some dangers for.
Summary of the invention
Technical assignment of the present invention is mainly for above-mentioned the deficiencies in the prior art, namely containing having the problems such as the stimulation effect of the chlorion of corrosion and sulfate ion, the accumulation of salt in the surface soil and Class F fly ash is low to reinforcing bar in the auxiliary agent that the cement plate of prior art is used, then the risk that reinforcing bar corrodes by chlorion, sulfate ion is avoided or reduced to cement plate composite modifier of the present invention, effectively can excite the activity of Class F fly ash simultaneously.
A kind of cement plate composite modifier, this composite modifier is made up of the raw material of following weight proportion:
Stiffening agent 8 ?12 parts
Hardening accelerator 3 ?5 parts
Accelerating chemicals 2 ?5 parts
Water-holding agent 1 ?1.5 parts
Water reducer 8 ?15 parts
Hydrophober 1 ?3 parts
Polymkeric substance 5 ?10 parts.
As preferably, described stiffening agent is one or more in powder water glass, liquid sodium silicate, Sodium Silicofluoride and Starso.
As preferably, described hardening accelerator is one or more in calcium formiate, Quilonum Retard.
As preferably, described accelerating chemicals is one or more in sodium carbonate, sodium metaaluminate, Tai-Ace S 150.
As preferably, described Tai-Ace S 150 be mixed with 25 ?the solution of 29 ° of B é use.
As preferably, described water-holding agent be 4 Wan ?one or more in the hydroxypropyl methyl cellulose ether of 100,000 viscositys, ethoxyl methyl cellulose ether and starch ethers.
As preferably, described water reducer is the one in powder type polycarboxylate water-reducer, liquid-type polycarboxylate water-reducer, naphthalene series high-efficiency water-reducing agent and melamine high-efficiency water-reducing agent.
As preferably, described hydrophober is one or more in calcium stearate, Zinic stearas, organosilicon.
As preferably, described polymkeric substance is one or more in vinyl acetate-ethylene copolymerization (VAE) emulsion, benzene emulsion, styrene-butadiene emulsion and redispersable latex powder (as VAE rubber powder, vinylformic acid rubber powder etc.).
The composition of raw materials cost of cement plate composite modifier of the present invention is low, manufacturing process is simple and easy to control, product stability is good, obviously can improve that cement plate demoulding strength is low, time of coagulation length, the problem such as bleeding, the accumulation of salt in the surface soil, fragility is large, avoid or reduce the risk that reinforcing bar corrodes by chlorion, sulfate ion, effectively can excite the activity of Class F fly ash, the high additive for Class F fly ash utilizes and provides scheme, reduces product cost simultaneously.
Embodiment
Carry out clear, complete description to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
A kind of cement plate composite modifier, this composite modifier is made up of the raw material of following weight proportion:
Stiffening agent 8 ?12 parts
Hardening accelerator 3 ?5 parts
Accelerating chemicals 2 ?5 parts
Water-holding agent 1 ?1.5 parts
Water reducer 8 ?15 parts
Hydrophober 1 ?3 parts
Polymkeric substance 5 ?10 parts.
During use, the volume of this cement plate composite modifier is silicate cement class inorganic coagulation material 3% ?5% (weight), attention: be powder as raw materials used, should adopt powder stirrer (60 ~ 80r/min) to mix before use; As containing liquid ingredient, liquid ingredient should be stirred in suitable quantity of water before use, then adopt powder stirrer to mix rear use all the other powders.
Described stiffening agent can be one or more in powder water glass, liquid sodium silicate (i.e. water glass), Sodium Silicofluoride and Starso.
Described hardening accelerator can be one or more in calcium formiate, Quilonum Retard.
Described accelerating chemicals can be one or more in sodium carbonate, sodium metaaluminate, Tai-Ace S 150.
Described Tai-Ace S 150 can be mixed with 25 ?29 ° of B é solution use.
Described water-holding agent can be one or more in the hydroxypropyl methyl cellulose ether of 40,000 ?100,000 viscositys, ethoxyl methyl cellulose ether and starch ethers.
Described water reducer can be the one in powder type polycarboxylate water-reducer, liquid-type polycarboxylate water-reducer, naphthalene series high-efficiency water-reducing agent and melamine high-efficiency water-reducing agent.
All there are some defects in naphthalene series high-efficiency water-reducing agent or melamine high-efficiency water-reducing agent, adopt the cement products slump-loss of these two kinds of water reducer preparations larger, from the cement of different quality, even blended material adaptability is undesirable, the cement products shrinking percentage of naphthalene water reducer preparation is higher, and in production process, environment is easily polluted, as volatile in NAPTHALENE FLAKES. (INDUSTRIAL GRADE), formaldehyde, sulfuric acid and caustic soda large to equipment corrosion, equipment maintenance cost is high.
So water reducer is preferably the one in powder type polycarboxylate water-reducer, liquid-type polycarboxylate water-reducer.
Described hydrophober can be one or more in calcium stearate, Zinic stearas, organosilicon.
Described polymkeric substance can be one or more in vinyl acetate-ethylene copolymerization (VAE) emulsion, benzene emulsion, styrene-butadiene emulsion and redispersable latex powder (as VAE rubber powder, vinylformic acid rubber powder etc.).
The composition of raw materials cost of cement plate composite modifier of the present invention is low, manufacturing process is simple and easy to control, product stability is good, effectively can solve the compatibility problem of vegetable fibre and silicate cement, improve that wood fibre refinforced cement plate demoulding strength is low, time of coagulation length, the problem such as bleeding, the accumulation of salt in the surface soil, fragility is large, avoid or reduce the risk that reinforcing bar corrodes by chlorion, sulfate ion, effectively can excite the activity of Class F fly ash simultaneously, high additive for Class F fly ash utilizes and provides scheme, reduces product cost.
Embodiment 1:
A kind of cement plate composite modifier, its feed composition and weight part are: powder water glass 8kg, calcium formiate 3kg, sodium metaaluminate 5kg, the hydroxypropyl methyl cellulose ether 1kg of 40,000 viscositys, powder type polycarboxylate water-reducer 8kg, calcium stearate 1kg, benzene emulsion 8kg.
Embodiment 2:
A kind of cement plate composite modifier, its feed composition and weight part are: liquid sodium silicate 12g, calcium formiate 3kg, sodium metaaluminate 5kg, the hydroxypropyl methyl cellulose ether 1kg of 100,000 viscositys, liquid-type polycarboxylate water-reducer 15kg, calcium stearate 1kg, styrene-butadiene emulsion 10kg.
Embodiment 3:
A kind of cement plate composite modifier, its feed composition and weight part are: powder water glass 10kg, calcium formiate 3kg, sodium carbonate 2kg, the hydroxypropyl methyl cellulose ether 1kg of 40,000 viscositys, powder type polycarboxylate water-reducer 8kg, Zinic stearas 1kg, VAE rubber powder 5kg.
Those skilled in the art, at consideration specification sheets and after putting into practice invention disclosed herein, will easily expect other embodiment of the present invention.The application is intended to contain any modification of the present invention, purposes or adaptations, and these modification, purposes or adaptations are followed general principle of the present invention and comprised the undocumented common practise in the art of the disclosure or conventional techniques means.Specification sheets and embodiment are only regarded as exemplary, and true scope of the present invention and spirit are pointed out by claim below.
Should be understood that, the present invention can carry out various amendment and change not departing from its scope.Scope of the present invention is only limited by appended claim.

Claims (9)

1. a cement plate composite modifier, is characterized in that:
This composite modifier is made up of the raw material of following weight proportion:
2. a cement plate composite modifier as claimed in claim 1, is characterized in that:
Described stiffening agent is one or more in powder water glass, liquid sodium silicate, Sodium Silicofluoride and Starso.
3. a cement plate composite modifier as claimed in claim 1, is characterized in that: described hardening accelerator is one or more in calcium formiate, Quilonum Retard.
4. a cement plate composite modifier as claimed in claim 1, is characterized in that: described accelerating chemicals is one or more in sodium carbonate, sodium metaaluminate, Tai-Ace S 150.
5. a cement plate composite modifier as claimed in claim 4, is characterized in that: the solution that described Tai-Ace S 150 is mixed with 25-29 ° of B é uses.
6. a cement plate composite modifier as claimed in claim 1, is characterized in that: described water-holding agent is one or more in the hydroxypropyl methyl cellulose ether of 40,000-10 ten thousand viscositys, ethoxyl methyl cellulose ether and starch ethers.
7. a cement plate composite modifier as claimed in claim 1, is characterized in that: described water reducer is the one in powder type polycarboxylate water-reducer, liquid-type polycarboxylate water-reducer, naphthalene series high-efficiency water-reducing agent and melamine high-efficiency water-reducing agent.
8. a cement plate composite modifier as claimed in claim 1, is characterized in that: described hydrophober is one or more in calcium stearate, Zinic stearas, organosilicon.
9. a cement plate composite modifier as claimed in claim 1, is characterized in that: described polymkeric substance is one or more in redispersable latex powder, benzene emulsion, vinyl acetate-ethylene copolymerization emulsions and styrene-butadiene emulsion.
CN201510454314.3A 2015-07-29 2015-07-29 Cement plate composite modifier Pending CN105060763A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105967543A (en) * 2016-05-09 2016-09-28 济南大学 Cement concrete water reducer
CN106186792A (en) * 2016-07-01 2016-12-07 卓达新材料科技集团威海股份有限公司 A kind of novel concrete fibre board additive
CN106186800A (en) * 2016-07-01 2016-12-07 卓达新材料科技集团威海股份有限公司 A kind of cement fibrolite plate additive
CN107459275A (en) * 2017-09-14 2017-12-12 重庆思贝肯节能技术开发有限公司 High-strength cement insulation board auxiliary agent and preparation method thereof
CN108794057A (en) * 2018-08-08 2018-11-13 宜兴市银泰冶金材料有限公司 A kind of inner-outer wall thermal insulation board of low water absorption lightweight and preparation method thereof
CN110342872A (en) * 2019-07-09 2019-10-18 卓冠(江苏)新材料科技有限公司 Flame-retarded light composite insulation boards and its processing method is blended in a kind of novel cement-based particle
CN110577410A (en) * 2019-06-18 2019-12-17 佛山市涂无忧建材有限公司 Cement-based waterproof filling material
CN110655347A (en) * 2019-11-05 2020-01-07 重庆中科建设(集团)有限公司 Super early strength agent and preparation method thereof
CN111302695A (en) * 2020-03-03 2020-06-19 深圳市三绿科技有限公司 Composite early strength water reducing agent and preparation method and application thereof
CN111517689A (en) * 2020-05-08 2020-08-11 张延年 High-efficiency fly ash activator and preparation method thereof
CN111662032A (en) * 2019-03-08 2020-09-15 广州市轻能建材有限公司 Cement modifier

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102336554A (en) * 2011-06-25 2012-02-01 南京工业大学 Cement-based lightweight porous heat insulating material and preparation method thereof
CN102936150A (en) * 2012-10-31 2013-02-20 南京福臻再生资源科技股份有限公司 Thermal insulation plate made of composite materials
CN103193419A (en) * 2011-08-01 2013-07-10 赵绍鉴 Novel multifunctional foamed cement board
CN103588499A (en) * 2013-11-11 2014-02-19 康利生 Composite foam cement board with functions of heat preservation and fire prevention and preparation method of composite foam cement board
CN104529509A (en) * 2014-12-15 2015-04-22 广西科技大学 Compound foamed cement slab for exterior-wall external insulation systems and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102336554A (en) * 2011-06-25 2012-02-01 南京工业大学 Cement-based lightweight porous heat insulating material and preparation method thereof
CN103193419A (en) * 2011-08-01 2013-07-10 赵绍鉴 Novel multifunctional foamed cement board
CN102936150A (en) * 2012-10-31 2013-02-20 南京福臻再生资源科技股份有限公司 Thermal insulation plate made of composite materials
CN103588499A (en) * 2013-11-11 2014-02-19 康利生 Composite foam cement board with functions of heat preservation and fire prevention and preparation method of composite foam cement board
CN104529509A (en) * 2014-12-15 2015-04-22 广西科技大学 Compound foamed cement slab for exterior-wall external insulation systems and preparation method thereof

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105967543A (en) * 2016-05-09 2016-09-28 济南大学 Cement concrete water reducer
CN106186792A (en) * 2016-07-01 2016-12-07 卓达新材料科技集团威海股份有限公司 A kind of novel concrete fibre board additive
CN106186800A (en) * 2016-07-01 2016-12-07 卓达新材料科技集团威海股份有限公司 A kind of cement fibrolite plate additive
CN106186792B (en) * 2016-07-01 2018-06-19 卓达新材料科技集团威海股份有限公司 A kind of cement fibrolite plate additive
CN107459275A (en) * 2017-09-14 2017-12-12 重庆思贝肯节能技术开发有限公司 High-strength cement insulation board auxiliary agent and preparation method thereof
CN107459275B (en) * 2017-09-14 2020-04-28 重庆思贝肯节能技术开发有限公司 High-strength foaming cement insulation board additive and preparation method thereof
CN108794057A (en) * 2018-08-08 2018-11-13 宜兴市银泰冶金材料有限公司 A kind of inner-outer wall thermal insulation board of low water absorption lightweight and preparation method thereof
CN111662032A (en) * 2019-03-08 2020-09-15 广州市轻能建材有限公司 Cement modifier
CN110577410A (en) * 2019-06-18 2019-12-17 佛山市涂无忧建材有限公司 Cement-based waterproof filling material
CN110342872A (en) * 2019-07-09 2019-10-18 卓冠(江苏)新材料科技有限公司 Flame-retarded light composite insulation boards and its processing method is blended in a kind of novel cement-based particle
CN110655347A (en) * 2019-11-05 2020-01-07 重庆中科建设(集团)有限公司 Super early strength agent and preparation method thereof
CN111302695A (en) * 2020-03-03 2020-06-19 深圳市三绿科技有限公司 Composite early strength water reducing agent and preparation method and application thereof
CN111517689A (en) * 2020-05-08 2020-08-11 张延年 High-efficiency fly ash activator and preparation method thereof

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Application publication date: 20151118