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Preparation method of anti-crack putty powder for external wall insulation

An anti-cracking putty and external wall thermal insulation technology, applied in the direction of filling slurry, etc., can solve problems such as poor crack resistance, weak structure, safety accidents, etc., to relieve expansion stress, reduce shrinkage cracking, and enhance crack resistance. Effect

Pending Publication Date: 2022-03-25
安徽省松涛装饰材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of preparation method that is used for the anti-cracking putty powder of exterior wall, to solve the existing exterior wall putty powder that its structure is not firm, anti-crack performance is poor, service life is short etc. problem that the above-mentioned background technology proposes, Moreover, safety accidents often occur due to cracking and falling off. At the same time, the thermal insulation effect of traditional exterior wall putty powder buildings is not ideal, and the thermal insulation performance of the wall in winter also needs to be improved.

Method used

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  • Preparation method of anti-crack putty powder for external wall insulation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] see figure 1 , the present invention provides a technical solution: a method for preparing putty powder for thermal insulation and anti-cracking of external walls, comprising the following steps:

[0041] Step 1, preparing the wall active agent.

[0042] 101) First, take an appropriate amount of p-toluene, toluene, and carbon tetrachloride, and fully stir and mix them at a temperature of 40-50° C. to obtain a mixture.

[0043] 102) Add the catalyst to the mixture while passing nitrogen gas, and the mass ratio of the catalyst to the mixture is 1:25, and fully stir and mix them at a temperature of 60-80°C.

[0044] 103) After S102, filter the catalyst-added mixture, and take out the filter residue for drying and washing to obtain a dried product.

[0045] 104) Add solvent and triethylamine to the dried product, stir and mix at 0-3°C to obtain a mixed solution.

[0046] 105) Add acryloyl chloride to the mixed liquid, stir and mix, filter with suction, take out the filte...

Embodiment 2

[0060] The preparation method of a kind of anti-cracking putty powder for external wall thermal insulation provided by this embodiment is roughly the same as that of Embodiment 1, and its main difference is:

[0061] In step S102, nitrogen gas is introduced into the mixture, and the mixture is fully stirred and mixed at a temperature of 60-80°C.

[0062] In step S104, a solvent is added to the dried product without adding triethylamine, and the mixture is stirred and mixed at 0-3° C. to obtain a mixed liquid.

[0063] In step S501, take an appropriate amount of polyacrylamide, add a small amount of N-methylpyrrolidone, and stir and mix at 15° C. to obtain a stirred mixture.

[0064] In step S503, the stirred mixture and the mixed raw materials are mixed together, stirred and mixed at a temperature of 15° C., then ethyl acetate is added, and after standing for a period of time, the precipitate is taken and dried to obtain an anti-cracking additive.

Embodiment 3

[0066] The preparation method of a kind of anti-cracking putty powder for external wall thermal insulation provided by this embodiment is roughly the same as that of Embodiment 1, and its main difference is:

[0067] In step S104, a solvent and a small amount of triethylamine are added to the dried product, and stirred and mixed at 0-3° C. to obtain a mixed solution.

[0068] In step S501, take an appropriate amount of polyacrylamide, add an equal amount of N-methylpyrrolidone, and stir and mix at a temperature of 15° C. to obtain a stirred mixture.

[0069] In step S503, the stirred mixture and the mixed raw materials are mixed together, stirred and mixed at a temperature of 20° C., then ethyl acetate is added, and after standing for a period of time, the precipitate is taken and dried to obtain an anti-cracking additive.

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Abstract

The invention discloses a preparation method of anti-crack putty powder for external wall insulation. The preparation method comprises the following steps: S1, preparing a wall active agent; s2, preparing a putty powder master batch; s3, stirring and mixing, and drying under reduced pressure; s4, preparing a putty powder base material; s5, preparing an anti-cracking additive; s6, preparing a wall heat conduction agent; and S7, uniformly stirring all the raw materials, sieving and packaging. According to the preparation method of the putty powder, hydrates formed by polyacrylamide in the anti-cracking additive are utilized to generate physical and chemical reactions to form a network structure with a reticular structure, and the wall active agent is utilized to relieve expansion stress, reduce dry shrinkage cracking and enhance the anti-cracking performance of the putty powder outer wall by utilizing the obtained cross-linked components in the hydration process; by adding the wall body heat conduction agent and utilizing the carbon fibers, the graphene oxide and the corn straw to form a bridge structure, heat can quickly pass through the carbon fibers, meanwhile, the carbon fibers can absorb or release the heat to achieve heat balance for heat preservation, and the heat preservation effect of the exterior wall putty powder is improved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for preparing putty powder for thermal insulation and anti-cracking of external walls. Background technique [0002] Putty powder is a kind of building decoration material. Its main components are talcum powder and glue. It is divided into two types: interior wall and exterior wall. The putty on the exterior wall can resist wind and sun, so it has high gelatinity, high strength and low environmental index. Putties are generally composed of base materials, fillers, water and additives. Base materials, also known as binders, are the most critical components of putties and mainly play various roles such as bonding. The most commonly used binders for putties are Cement and organic polymers, organic polymers are divided into emulsion and latex powder, organic polymers can modify and toughen them, thereby improving the performance of putty. Fillers mainly play a fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/34
CPCC09D5/34
Inventor 舒明
Owner 安徽省松涛装饰材料有限责任公司
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