CN107936671A - A kind of gypsum base putty - Google Patents
A kind of gypsum base putty Download PDFInfo
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- CN107936671A CN107936671A CN201711448500.1A CN201711448500A CN107936671A CN 107936671 A CN107936671 A CN 107936671A CN 201711448500 A CN201711448500 A CN 201711448500A CN 107936671 A CN107936671 A CN 107936671A
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- gypsum
- gypsum base
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/34—Filling pastes
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of gypsum base putty, it includes the component of following mass parts：30~40 parts of beta-type semi-hydrated gypsum, grey 3~7 parts of calcium, 2~3 parts of silicon ash, 3~5 parts of slag, 50~60 parts of coarse whiting, 0.8~1.5 part of redispersable latex powder, 0.3~0.4 part of cellulose ether, 0.03~0.05 part of starch ether, 0.2~0.5 part of wood fibre, 0.1~0.5 part of water-repelling agent, 0.06~0.1 part of retarder.The present invention is using beta-type semi-hydrated gypsum as main cementitious material, and using grey calcium, slag and silicon ash as complementary cementitious material, each component reacts to each other, so as to improve the mechanical property and water resistance of gelling system.The gypsum base putty of the present invention has excellent caking property, water resistance and pliability, and raw material sources are extensive, of low cost.The 7d adhesion strengths of gypsum base putty of the present invention reach 0.9MPa, and adhesion strength reaches more than 0.4MPa after immersion.
Description
Technical field
The invention belongs to the technical field of construction material, and in particular to a kind of gypsum base putty.
Background technology
Putty is a kind of ornament materials of smooth surface of wall, is a kind of mastic, is essential before coating paints
A kind of product, usually apply to impose on priming paint or directly apply and impose on object, coated article surface is rugged to be lacked to remove
Fall into.Putty is divided into two kinds of exterior wall putty and inner wall putty, and exterior wall putty requires higher than the physical index of inner wall putty, generally
Ask its water resistance, it is anti-aging to reach the service life being equal with building, cracking resistance, anticracking, adhesion are eager to excel, to resist nature
The invasion and attack that boundary exposes to the weather.Common putty can be divided into PVA glue putty, gypsum base putty, grey calcium base putty and concrete dry-powder
Putty.The wherein water resistance of PVA glue putty and gypsum base putty is poor；And adhesion strength, the water resistance of cement base putty are equal
Preferably, but crack resistance is relatively poor；Grey calcium base putty adhesion strength is moderate, and water resistance is between gypsum base putty and cement base putty
Between, but alkalescence is too strong, constructor can be made to have the sensation of calcination, it is also possible to decompose the mill base of surface layer emulsion paint, cause color
It is uneven.
Building gypsum is had a wide range of applications in building materials field as industry byproduct, has that crack resistance is good, texture is smooth
Fine and smooth, the features such as heat insulation property is preferable, but there are problems that, as water resistance is poor, has faintly acid, this causes its application
Field is restricted.When gypsum application is in putty, under moist use condition, it is easy to dry linting, peeling and stripping occur
The phenomenon fallen, meanwhile, after gypsum putty is contacted with steel product (such as iron pipe), it be easy to cause corrosion.Therefore, it is necessary to stone
Cream putty is modified, and can meet normal requirement.
The content of the invention
In order to solve the above technical problems, it is an object of the invention to provide a kind of gypsum base putty, the gypsum base putty with
General putty, which is compared, has more excellent crack resistance, water resistance and adhesive property.
Specifically, the present invention provides a kind of gypsum base putty, it includes the component of following mass parts：Beta-type semi-hydrated gypsum
30~40 parts, grey 3~7 parts of calcium, 2~3 parts of silicon ash, 3~5 parts of slag, 50~60 parts of coarse whiting, redispersable latex powder 0.8~1.5
Part, 0.3~0.4 part of cellulose ether, 0.03~0.05 part of starch ether, 0.2~0.5 part of wood fibre, 0.1~0.5 part of water-repelling agent,
0.06~0.1 part of retarder.
Further, the mesh number of the grey calcium is 400~500 mesh, Ca (OH)2Content >=90%.
Further, specific surface area >=20000m of the silicon ash2/kg。
Further, the specific surface area of the slag is 400~500m2/kg。
Further, the particle diameter of the coarse whiting is 400~800 mesh.
Further, the redispersable latex powder is less than 0 DEG C of acrylate copolymer for glass transition temperature.
Further, the cellulose ether is hydroxypropyl methyl cellulose ether or ethoxyl methyl cellulose ether, and viscosity is
40000~100000mPa.s.
Further, the retarder is protein-based calcium sulphate retarder.
Further, the water-repelling agent is micro/nano level bentonite.
Beneficial effects of the present invention are：The present invention using beta-type semi-hydrated gypsum as main cementitious material, with grey calcium, slag and
Silicon ash can react to each other as complementary cementitious material, each component, thus improve gelling system mechanical property and
Water resistance.The gypsum base putty of the present invention has excellent caking property, water resistance and a pliability, and raw material sources it is extensive,
It is of low cost.The 7d adhesion strengths of gypsum base putty of the present invention reach 0.9MPa, and water-fast adhesion strength reaches more than 0.4MPa, energy
Enough meet the standard of interior wall water-resistant type putty.
Embodiment
Technical solution of the present invention is illustrated to be clearer, the skill below in conjunction with embodiment to the present invention
Art scheme is further elaborated：
In the specific embodiment of the present invention, the present invention provides a kind of gypsum base putty, it includes following
The component of mass parts：30~40 parts of beta-type semi-hydrated gypsum, grey 3~7 parts of calcium, 2~3 parts of silicon ash, 3~5 parts of slag, coarse whiting 50~60
Part, 0.8~1.5 part of redispersable latex powder, 0.3~0.4 part of cellulose ether, 0.03~0.05 part of starch ether, wood fibre 0.2
~0.5 part, 0.1~0.5 part of water-repelling agent, 0.06~0.1 part of retarder.
The present invention is using beta-type semi-hydrated gypsum as major gelled material, and grey calcium, slag and silicon ash are as complementary gelling material
Material, wherein β types substitution alpha semi-hydrated gypsum can not only ensure the good gelling property of putty, but also can be reduced with efficent use of resources
Cost.Grey calcium main chemical compositions are Ca (OH)2, on the one hand can be with the CO in air2Reaction generation calcium carbonate crystal provides strong
Degree, improves the water resistance of putty；On the other hand, slag and silicon ash can be (living by alkaline matter stimulating activity, silicic acid therein
Property silica SiO2) or manosil AS material (alundum (Al2O3) Al2O3) under finely divided status condition, participate in hydration reaction life
Into hydrated calcium silicate gel (C-S-H) gel with gelling, putty later strength is assigned.In addition, the suitable grey calcium of addition,
It can assign complex cementitious system certain alkalescence, so as to avoid corrosion ferrite members.
Wherein, the mesh number of the grey calcium is 400~500 mesh, Ca (OH)2Content >=90%.The main chemical compositions of grey calcium
For Ca (OH)2, can be with the CO in air2Reaction generation calcium carbonate crystal provides intensity, improves the water resistance of putty.
Specific surface area >=20000m of the silicon ash2/kg.The specific surface area of the slag is 400~500m2/kg.It is above-mentioned
Silicon ash and slag under finely divided status condition, participate in hydration reaction generation with gelling hydrated calcium silicate gel (C-S-
H) gel, assigns putty later strength.
The particle diameter of the coarse whiting is 400~800 mesh.Using the coarse whiting as filler, the sum of gypsum base putty can be improved
Easy property and compaction rate, are conducive to improve mechanical property, the mobility, stability and later stage that can also improve gypsum base putty are strong
Degree.
The redispersable latex powder is less than 0 DEG C of acrylate copolymer for glass transition temperature.It is above-mentioned to divide again
Continuous film not soluble in water can be formed so as to hinder the entrance of moisture, with EVA classes on slurry surface by dissipating the latex particle of latex powder
Rubber powder has more excellent water resistance compared to acrylate copolymer, contributes to the water absorption rate of reduction putty and water resistant
Ability.For the glass transition temperature of redispersable latex powder usually at -10 DEG C~20 DEG C, glass transition temperature is lower, flexible
Higher, cohesive force and cohesive force are relatively lower.As preference, select the rubber powder that glass transition temperature is less than 0 DEG C.
The cellulose ether is hydroxypropyl methyl cellulose ether or ethoxyl methyl cellulose ether, viscosity for 40000~
100000mPa.s.Above-mentioned cellulose ether is a kind of high molecular polymer of tridimensional network, is deposited on crosslinked net structure
In many hydrophilic radicals, these groups can associate to form hydrogen bond with moisture, and the substantial amounts of Free water of sticking, plays water conservation and thickening
Effect.
The retarder is protein-based calcium sulphate retarder.The effect of above-mentioned retarder is can to delay aquation, reduces stone
The fluidity gradual loss of cream base putty, it is ensured that gypsum base putty enough operating times.
The water-repelling agent is micro/nano level bentonite.Water-repelling agent is a kind of micro/nano level dispersiveness layered silicate material,
It with fabulous dispersion performance, can greatly strengthen the hydrophobicity and stain resistance of slurry, and improve the application operability of putty.By
Come from natural inorganic thing in the material, its hydrophobic function does not change with the change of time and surrounding environment, has putty
Stable hydrophobicity.
The present invention, which fills suitable starch ether, can assign putty thixotropy, slipping when improving putty construction, but starch ether
Air-entraining effect it is obvious, its dosage is unsuitable excessive.
Above-mentioned embodiment is further illustrated below by embodiment, but is not therefore limited the present invention to described
Scope of embodiments among.The experimental method of actual conditions is not specified in the following example, according to conventional methods and conditions, or presses
Selected according to product manual.
Involved in embodiment to material can directly be bought by commercial sources.
Embodiment 1
A kind of gypsum base putty, includes the component of following mass parts：40 parts of beta-type semi-hydrated gypsum, grey calcium (mesh number is 400 mesh,
Ca(OH)2Content >=90%) 3 parts, silicon ash (specific surface area >=20000m2/ kg) 2 parts, slag (specific surface area 400m2/kg)3
Part, 50 parts of coarse whiting (particle diameter is 400 mesh), 0.8 part of acrylate copolymer (- 4 DEG C of glass transition temperature), cellulose ether are (viscous
Spend 100000mPa.s) 0.3 part, 0.03 part of starch ether, 0.3 part of wood fibre, 0.5 part of water-repelling agent, 0.1 part of retarder.Will be above-mentioned
Component is uniformly mixed obtained gypsum base putty.
Embodiment 2
A kind of gypsum base putty, includes the component of following mass parts：30 parts of beta-type semi-hydrated gypsum, grey calcium (mesh number is 450 mesh,
Ca(OH)2Content >=90%) 3 parts, silicon ash (specific surface area >=20000m2/ kg) 2 parts, slag (specific surface area 450m2/kg)3
Part, 60 parts of coarse whiting (particle diameter is 500 mesh), 1.5 parts of acrylate copolymer (- 5 DEG C of glass transition temperature), cellulose ether are (viscous
Spend 100000mPa.s) 0.3 part, 0.03 part of starch ether, 0.2 part of wood fibre, 0.1 part of water-repelling agent, 0.06 part of retarder.Will be upper
State component and be uniformly mixed obtained gypsum base putty.
Embodiment 3
A kind of gypsum base putty, includes the component of following mass parts：32 parts of beta-type semi-hydrated gypsum, grey calcium (mesh number is 450 mesh,
Ca(OH)2Content >=90%) 7 parts, silicon ash (specific surface area >=20000m2/ kg) 3 parts, slag (specific surface area 450m2/kg)5
Part, 51 parts of coarse whiting (particle diameter is 500 mesh), 0.8 part of acrylate copolymer (- 4 DEG C of glass transition temperature), cellulose ether (glue
Spend 40000mPa.s) 0.4 part, 0.05 part of starch ether, 0.5 part of wood fibre, 0.4 part of water-repelling agent, 0.07 part of retarder.Will be above-mentioned
Component is uniformly mixed obtained gypsum base putty.
Embodiment 4
A kind of gypsum base putty, includes the component of following mass parts：34 parts of beta-type semi-hydrated gypsum, grey calcium (mesh number is 500 mesh,
Ca(OH)2Content >=90%) 5 parts, silicon ash (specific surface area >=20000m2/ kg) 3 parts, slag (specific surface area 500m2/kg)3
Part, 53 parts of coarse whiting (particle diameter is 800 mesh), 1 part of acrylate copolymer (- 6 DEG C of glass transition temperature), cellulose ether (viscosity
50000mPa.s) 0.4 part, 0.05 part of starch ether, 0.45 part of wood fibre, 0.1 part of water-repelling agent, 0.09 part of retarder.Will be above-mentioned
Component is uniformly mixed obtained gypsum base putty.
Comparative example 1
A kind of gypsum base putty, includes the component of following mass parts：46 parts of beta-type semi-hydrated gypsum, 52 parts of coarse whiting, EVA classes can
1 part of redisperse latex powder (0 DEG C of glass transition temperature), 0.4 part of cellulose ether (viscosity 100000mPa.s), starch ether 0.05
Part, 0.3 part of wood fibre, 0.1 part of retarder.Said components are uniformly mixed obtained gypsum base putty.
Comparative example 2
A kind of gypsum base putty, includes the component of following mass parts：35 parts of beta-type semi-hydrated gypsum, grey 4 parts of calcium, 4 parts of silicon ash,
2 parts of slag, 53 parts of coarse whiting, 1 part of EVA classes redispersable latex powder (0 DEG C of glass transition temperature), cellulose ether (viscosity
100000mPa.s) 0.4 part, 0.05 part of starch ether, 0.3 part of wood fibre, 0.1 part of retarder.Said components are uniformly mixed system
Obtain gypsum base putty.
According to inner wall putty standard JG/T 298-2010《Architecture indoor putty》Requirement, each index test result is such as
Shown in table 1.
Table 1
As shown in Table 1, the cementitious material used in comparative example 1 only has gypsum, and redispersible used in comparative example 2
Latex powder is EVA class rubber powders, and is not added with water-repelling agent, its adhesion strength of soaking is relatively low, and standard bonding strength and immersion bond by force
Degree is relatively low.The present invention after addition acrylate copolymer and water-repelling agent, especially soak by the adhesion strength of gypsum base putty
Water adhesion strength is obviously improved, it is seen that acrylate copolymer and water-repelling agent are for improving working well for putty water resistance.
Gypsum base putty provided by the present invention is preferable with water resistance, and adhesion strength is high, cheap, application property is good
The characteristics of, inner wall putty use demand can be fully met.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Any modification, equivalent substitution and simple modifications for being made in content etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of gypsum base putty, it is characterised in that it includes the component of following mass parts：30~40 parts of beta-type semi-hydrated gypsum, ash
3~7 parts of calcium, 2~3 parts of silicon ash, 3~5 parts of slag, 50~60 parts of coarse whiting, 0.8~1.5 part of redispersable latex powder, cellulose ether
0.3~0.4 part, 0.03~0.05 part of starch ether, 0.2~0.5 part of wood fibre, 0.1~0.5 part of water-repelling agent, retarder 0.06
~0.1 part.
2. gypsum base putty according to claim 1, it is characterised in that：The mesh number of the ash calcium is 400~500 mesh, Ca
(OH)2Content >=90%.
3. gypsum base putty according to claim 1, it is characterised in that：Specific surface area >=20000m of the silicon ash2/kg。
4. gypsum base putty according to claim 1, it is characterised in that：The specific surface area of the slag is 400~500m2/
kg。
5. gypsum base putty according to claim 1, it is characterised in that the particle diameter of the coarse whiting is 400~800 mesh.
6. gypsum base putty according to claim 1, it is characterised in that the redispersable latex powder is glass transition
Temperature is less than 0 DEG C of acrylate copolymer.
7. gypsum base putty according to claim 1, it is characterised in that the cellulose ether is hydroxypropyl methyl cellulose
Ether or ethoxyl methyl cellulose ether, viscosity are 40000~100000mPa.s.
8. gypsum base putty according to claim 1, it is characterised in that the retarder is protein-based gypsum slow setting
Agent.
9. gypsum base putty according to claim 1, it is characterised in that the water-repelling agent is micro/nano level bentonite.
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| CN201711448500.1A CN107936671A (en) | 2017-12-27 | 2017-12-27 | A kind of gypsum base putty |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553370A (en) * | 2018-11-15 | 2019-04-02 | 重庆建工建筑产业技术研究院有限公司 | A kind of multi-functional water-proof gypsum revetment powder and its preparation method and application |
| CN109810556A (en) * | 2019-03-05 | 2019-05-28 | 浙江志强涂料有限公司 | One pack system gypsum base water proof putty and its construction method |
| CN110305516A (en) * | 2019-08-12 | 2019-10-08 | 中山爱因新材料有限公司 | A kind of interior wall desulfurized gypsum putty |
| CN110451908A (en) * | 2019-08-07 | 2019-11-15 | 龙牌粉料(太仓)有限公司 | A kind of gypsum base putty and preparation method thereof of bottom surface unification |
| CN111607277A (en) * | 2019-06-21 | 2020-09-01 | 中建材创新科技研究院有限公司 | Gypsum putty with temperature adjusting function and preparation method thereof |
| CN112299802A (en) * | 2020-09-08 | 2021-02-02 | 浙江立晶新型材料开发有限公司 | Formula and production method of coating |
| CN113213876A (en) * | 2021-05-31 | 2021-08-06 | 首建新材料(山东)有限公司 | Lightweight overlay gypsum building material and preparation method thereof |
| CN114773927A (en) * | 2022-03-24 | 2022-07-22 | 襄阳泽东化工集团股份有限公司 | Gypsum-based steel structure fireproof coating interface agent and preparation method thereof |
| CN117165104A (en) * | 2023-05-30 | 2023-12-05 | 顺德职业技术学院 | Protective slurry for outdoor furniture surface of concrete canvas and treatment method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553370A (en) * | 2018-11-15 | 2019-04-02 | 重庆建工建筑产业技术研究院有限公司 | A kind of multi-functional water-proof gypsum revetment powder and its preparation method and application |
| CN109810556A (en) * | 2019-03-05 | 2019-05-28 | 浙江志强涂料有限公司 | One pack system gypsum base water proof putty and its construction method |
| CN111607277A (en) * | 2019-06-21 | 2020-09-01 | 中建材创新科技研究院有限公司 | Gypsum putty with temperature adjusting function and preparation method thereof |
| CN110451908A (en) * | 2019-08-07 | 2019-11-15 | 龙牌粉料(太仓)有限公司 | A kind of gypsum base putty and preparation method thereof of bottom surface unification |
| CN110451908B (en) * | 2019-08-07 | 2022-02-22 | 龙牌粉料(太仓)有限公司 | Bottom-surface-integrated gypsum-based putty and preparation method thereof |
| CN110305516A (en) * | 2019-08-12 | 2019-10-08 | 中山爱因新材料有限公司 | A kind of interior wall desulfurized gypsum putty |
| CN112299802A (en) * | 2020-09-08 | 2021-02-02 | 浙江立晶新型材料开发有限公司 | Formula and production method of coating |
| CN112299802B (en) * | 2020-09-08 | 2024-06-18 | 浙江立晶新型材料开发有限公司 | Formula and production method of paint |
| CN113213876A (en) * | 2021-05-31 | 2021-08-06 | 首建新材料(山东)有限公司 | Lightweight overlay gypsum building material and preparation method thereof |
| CN114773927A (en) * | 2022-03-24 | 2022-07-22 | 襄阳泽东化工集团股份有限公司 | Gypsum-based steel structure fireproof coating interface agent and preparation method thereof |
| CN117165104A (en) * | 2023-05-30 | 2023-12-05 | 顺德职业技术学院 | Protective slurry for outdoor furniture surface of concrete canvas and treatment method |
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