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Type II polymer cement waterproof coating and preparation method thereof

A technology for waterproof coatings and polymers, applied in the field of waterproof coatings, can solve the problems of easy cracking and easy sagging, and achieve the effects of improving thixotropy, large viscosity changes, and improved impermeability.

Inactive Publication Date: 2014-07-23
SHANGHAI ORIENTAL YUHONG WATERPROOF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is in order to overcome the defects such as the easy sagging of the facade construction of the existing polymer cement waterproof coating with VAE emulsion as raw material, and the cracking phenomenon is more likely to occur on the uneven base surface and the yin and yang corner positions, and Provided is a new type II polymer cement waterproof coating and its preparation method

Method used

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  • Type II polymer cement waterproof coating and preparation method thereof
  • Type II polymer cement waterproof coating and preparation method thereof
  • Type II polymer cement waterproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Example 1 is a type II polymer cement waterproof coating containing starch ether and acetic acid mixed ester and its preparation method, and its raw material formula is shown in Table 3.

[0078] The raw material formula of table 3 embodiment 1: coating is made up of liquid material and powder

[0079] liquid composition

Example 1

548ND

82.73%

0.5% starch ether aqueous solution

10.05%

Mixed acetate

1.18%

Propylene Glycol

0.30%

LCN407

0.41%

1340

0.59%

DOTP

4.73%

F-251

0.01%

[0080] Powder ingredients

Example 1

White cement 32.5 grade

27.88%

Quartz powder (325 mesh)

23.23%

Wollastonite powder (200 mesh)

48.79%

Superplasticizer

0.10%

[0081] Preparation:

[0082] (1) Preparation of liquid material

[0083] Mix acetic acid mixed ester and starch ether aqueous solution to obtain a predispersion; stir t...

Embodiment 2

[0088] Example 2 is a type II polymer cement waterproof coating containing starch ether and acetic acid mixed ester and a preparation method thereof, and its raw material formula is shown in Table 4.

[0089] The raw material formula of table 4 embodiment 2: coating is made up of liquid material and powder

[0090] liquid composition

Example 2

548ND

83.03%

1.5% starch ether aqueous solution

10.08%

Mixed acetate

0.83%

Propylene Glycol

0.30%

LCN407

0.42%

1340

0.59%

DOTP

4.74%

F-251

0.01%

[0091] Powder ingredients

Example 2

Gray cement 42.5 grade

27.88%

Quartz powder (325 mesh)

23.23%

Wollastonite powder (200 mesh)

48.79%

Superplasticizer

0.10%

[0092] Preparation:

[0093] (1) Preparation of liquid material

[0094] Mix acetic acid mixed ester and starch ether aqueous solution to obtain a predispersion; s...

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Abstract

The present invention discloses a type II polymer cement waterproof coating and a preparation method thereof. The type II polymer cement waterproof coating comprises liquid material and powder material, the ratio of liquid material to powder material is 1: 1.2 by mass. A liquid material formulation includes the following ingredients by weight percentage: 75-85% of VAE emulsion, 3.5-10% of plasticizer, 0.05-0.25% of starch ethers, 0.83-1.18% of mixed acetic acid esters and 10-14% of water; a powder material formulation includes the following ingredients by weight percentage: 25-35% of cement, 15-25% of quartz powder, 45-55% of wollastonite powder and 0.05-0.2% of water reducing agent. The type II polymer cement waterproof coating of the present invention is free of sags in building elevation construction, is not liable to crack in rough surface construction, and performs well in bonding with a base layer and the like.

Description

technical field [0001] The invention relates to the field of waterproof coatings, in particular to a type II polymer cement waterproof coating and a preparation method thereof. Background technique [0002] Polymer cement waterproof coating is an organic liquid material composed of polyacrylate emulsion or ethylene-vinyl acetate copolymer emulsion (VAE emulsion for short) and various additives and inorganic fillers such as cement, quartz sand and various additives through reasonable proportioning, A two-component water-based architectural waterproof coating made by compounding. The material originated in Japan in the 1950s and was patented. my country began to develop it in 1991 and successfully developed it at the end of 1994. This kind of waterproof coating not only has the advantages of high strength of cement-based cementitious materials and is easy to bond with wet base surfaces, but also has the advantages of high elasticity of polymer coating film and good waterproo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B28/04C04B111/27
Inventor 魏伟朱成珍刘操
Owner SHANGHAI ORIENTAL YUHONG WATERPROOF TECH
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