Two-component polymer cement waterproof coating

A waterproof coating and polymer technology, applied in the field of waterproof coatings and two-component polymer cement waterproof coatings, can solve the problems of reduced coating performance, unstable storage, affecting the storage stability of coatings, etc., to improve adhesion and stable properties. , enhance the effect of the combination

Active Publication Date: 2016-08-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the silane coupling agent is liquid and prone to hydrolysis, if the silane coupling agent is directly added to the liquid material of the waterproof coating, as the silane coupling agent undergoes hydrolysis and condensation reactions in water, it will not only affect the storage of the coating Stability, and will greatly reduce the performance of the coating; and the existing technology of waterproof coating added silane coupling agent must be constructed within three days, can not be stored stably

Method used

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  • Two-component polymer cement waterproof coating
  • Two-component polymer cement waterproof coating
  • Two-component polymer cement waterproof coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A two-component polymer cement waterproof coating, which is composed of a liquid material and a powder material. The liquid material is a pure acrylate emulsion, and the powder material is composed of the following components in parts by mass:

[0029]

[0030] The preparation method of silane coupling agent microcapsules is as follows: 20 parts of quality of soluble starch and 5 parts of quality of polyvinylpyrrolidone K30 are dissolved in 50 parts of quality of water, and then 10 parts of quality of γ-(2,3-epoxy Propoxy)propyltrimethoxysilane, disperse the mixed liquid with a high-speed disperser at 2000r / min for 5 minutes, and then spray dry to obtain silane coupling agent microcapsules; the parameters of spray drying are set as follows: inlet temperature 110°C, outlet temperature The temperature is 72°C, the feed rate is 2kg / h, and the rotation speed of the atomizer is 20000r / min.

[0031] Mix the liquid material and the powder material in a mass ratio of 1:2, mi...

Embodiment 2

[0033] The two-component polymer cement waterproof coating of this embodiment is composed of a liquid material and a powder material. The liquid material is a pure acrylate emulsion, and the powder material is composed of the following components in parts by mass:

[0034]

[0035] The preparation method of silane coupling agent microcapsules is as follows: 30 parts of quality of maltodextrin and 10 parts of quality of polyvinyl alcohol 1788 are dissolved in 60 parts of quality of water, and then 20 parts of quality of 3‐glycidyl ether propyl For methyldiethoxysilane, disperse the mixed liquid with a high-speed disperser at 3000r / min for 10 minutes, then spray dry to obtain silane coupling agent microcapsules; the parameters of spray drying are set as follows: inlet temperature 160°C, outlet temperature 108°C , the feed rate is 1kg / h, and the rotation speed of the atomizer is 30000r / min.

[0036]The liquid material and the powder material are mixed according to the mass rat...

Embodiment 3

[0038] The two-component polymer cement waterproof coating of this embodiment is composed of a liquid material and a powder material. The liquid material is a pure acrylate emulsion, and the powder material is composed of the following components in parts by mass:

[0039]

[0040] The preparation method of silane coupling agent microcapsules is as follows: 30 parts of quality cyclodextrin and 10 parts of quality of polyvinyl alcohol 1788 are dissolved in 60 parts of quality of water, and then 10 parts of quality of γ‐(methacryloyloxy ) Propyltrimethoxysilane and 10 parts of quality vinyltrimethoxysilane, the mixed solution is dispersed at 3000r / min for 10min with a high-speed disperser and then spray-dried to obtain silane coupling agent microcapsules; the parameter setting of spray-drying It is: inlet temperature 160°C, outlet temperature 108°C, feed rate 1kg / h, atomizer speed 30000r / min.

[0041] The liquid material and the powder material are mixed according to the mass...

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Abstract

The invention discloses a two-component polymer cement waterproof coating, which is composed of a liquid material and a powdery material. The ratio of the liquid material to the powder material is 1:2-2:1. The liquid material is a pure acrylate emulsion. The powder material is composed of the following ingredients (by weight): 30-50 parts of Portland cement, 15-30 parts of ground calcium carbonate, 15-30 parts of mica powder, 15-30 parts of quartz sand, 0.1-0.3 part of an antifoaming agent, 0.1-0.3 part of a dispersant, 0.3-1 part of a water reducer and 1-5 parts of microcapsules of a silane coupling agent. By using water-soluble starch and water-soluble polymer compound as a wall material and using a silane coupling agent as a core material, an oil-in-water emulsion is firstly prepared, and then the emulsion is spray-dried so as to prepare the microcapsules of the silane coupling agent. The two-component polymer cement waterproof coating with addition of the microcapsules of the silane coupling agent has strong tensile strength and also has good flexibility and water resistance.

Description

technical field [0001] The invention relates to a waterproof coating, in particular to a two-component polymer cement waterproof coating, which belongs to the field of coatings. Background technique [0002] With the deepening of reform and opening up and the rapid development of economic construction, the construction industry has also made great progress, but the problem of project quality is still prominent, especially in the field of construction waterproofing. Roofs, toilets, exterior walls, and basements, the so-called "four leaks" have become a common quality problem in construction projects. Polymer cement waterproof coating is a commonly used waterproof material in construction. It is mainly composed of polymer emulsion, cement, pigments and fillers, and additives. It combines the rigidity of cement and the flexibility of polymer. It can be adjusted by adjusting the polymer emulsion. The ratio of cement to adapt to building waterproof requirements under various con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/27C04B14/28C04B14/20C04B14/06C04B2103/50C04B2103/408C04B2103/302C04B24/40
Inventor 廖慨张心亚
Owner SOUTH CHINA UNIV OF TECH
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