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Redispersible emulsion powder and preparation method thereof

A technology for redispersing latex powder and emulsion, applied in the field of building materials, can solve the problems of thermal energy and electric energy consumption of protective glue, and achieve the effect of saving thermal energy and electric energy

Inactive Publication Date: 2018-05-15
江苏福吉利亚建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the dissolution preparation of the protective glue needs to consume a certain amount of heat and electricity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Redispersible latex powder comprises the EVA emulsion of 70 parts by weight; The polyvinyl alcohol of 17 parts by weight; The gas phase silica of 3 parts by weight, above-mentioned material is weighed by parts by weight.

[0019] Next prepare the redispersible latex powder:

[0020] 1) Mix 40% of all the protective rubber powder with water in proportion to prepare a protective rubber solution, the mixing mass ratio is 1:4, and prepare a solution in a dissolving tank;

[0021] 2) Add the EVA emulsion, and then transport the mixed solution to the drying equipment;

[0022] 3) Centrifugal spray drying, adding anti-caking agent and remaining protective rubber powder at the same time, cooling and separating to obtain redispersible rubber powder. The air inlet temperature of the spray drying tower is 140°C, and the outlet temperature of the tower is 80°C.

Embodiment 2

[0024] Redispersible latex powder comprises the EVA emulsion of 80 parts by weight; The polyvinyl alcohol of 27 parts by weight; The gas phase silicon dioxide of 3 parts by weight, above-mentioned material is weighed by parts by weight.

[0025] Next prepare the redispersible latex powder:

[0026] 1) Mix 60% of all the protective gel powder with water in proportion to prepare a protective gel solution, the mixing mass ratio is 1:4, and prepare a solution in a dissolving tank;

[0027] 2) Add the EVA emulsion, and then transport the mixed solution to the drying equipment;

[0028] 3) Centrifugal spray drying, adding anti-caking agent and remaining protective rubber powder at the same time, cooling and separating to obtain redispersible rubber powder. The air inlet temperature of the spray drying tower is 140°C, and the outlet temperature of the tower is 80°C.

[0029] The powder prepared in the above examples was dispersed into an emulsion when it met water, and after formin...

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PUM

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Abstract

The invention provides redispersible emulsion powder. The powder comprises the following substances in parts by weight: 70-80 parts of an EVA emulsion, 9-13 parts of protective glue powder, 8-14 partsof a protective glue solution, and 3-5 parts of an anticaking agent. The redispersible rubber powder can save heat energy and electric energy, and at the same time, compared with emulsion powder prepared by traditional technology, the redispersible emulsion powder has the same characteristics, such as fluidity and the like.

Description

technical field [0001] The invention relates to a building material, in particular to a redispersible latex powder and a preparation method thereof. Background technique [0002] Redispersible rubber powder, mainly used in external wall insulation sticky board, plastering mortar, tile bonding, self-leveling mortar, concrete mortar, dry powder interface agent, pointing agent. [0003] At present, the main advantages of redispersible rubber powder are good stability, long storage period, simple packaging, convenient transportation, and can be mixed with cement, gypsum and other raw materials. Fluctuations in construction performance. [0004] Conventional redispersible rubber powder, because it is mainly based on vinyl acetate-ethylene copolymer emulsion, can not be directly spray-dried, so it is necessary to add protective glue. And the dissolution preparation of protective glue needs to consume certain heat energy and electric energy. Contents of the invention [0005] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L29/04C08K3/36C08J3/12
CPCC08J3/12C08J2323/08C08J2429/04C08K3/36
Inventor 兰长胜
Owner 江苏福吉利亚建材有限公司