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Polymer cement based composite waterproof coating material for construction and its preparation

A waterproof coating and polymer technology, applied in cement coatings, antifouling/underwater coatings, coatings, etc., can solve the problems of aging resistance, weather resistance, water resistance, unsuitable for waterproofing, unsuitable for use, etc. Improve the overall waterproof effect, reduce leakage hidden danger, good durability

Inactive Publication Date: 2004-02-04
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rigid materials are strong, not easy to age, and have good weather resistance, but they are not suitable for waterproofing of engineering deformation and displacement parts; while flexible materials are flexible and can adapt to the deformation of the base layer, but in terms of aging resistance, weather resistance, water resistance, etc. Unsatisfactory and not suitable for waterproofing backwater and wet substrates

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Organic liquid component (A): acrylate emulsion 82kg, siloxane emulsion 11kg, dibutyl phthalate 3kg, propylene glycol 2kg, sodium tripolyphosphate 1kg, tributyl phosphate 1kg; Inorganic powder component (B ): Ordinary Portland cement 75kg, pigment O, talcum powder 25kg. According to the method mentioned above, it is prepared into two components. When in use, component A and component B are applied in a weight ratio of 0.8:1 to 1.4:1. The coating has high mechanical properties and waterproof performance, and can be applied in most environments.

Embodiment 2

[0048] Organic liquid component (A): acrylate emulsion 75kg, siloxane emulsion 11kg, dibutyl phthalate 8kg, propylene glycol 2kg, sodium tripolyphosphate 1kg, tributyl phosphate 2kg; Inorganic powder component (B ): Ordinary Portland cement 75kg, pigment 0, talcum powder 25kg. According to the method mentioned above, it is prepared into two components. When used, component A and component B are applied in a weight ratio of 1:1. The coating has good low-temperature flexibility and can be applied to waterproof in environments with large temperature changes, such as roof waterproofing.

Embodiment 3

[0050] Organic liquid component (A): 75kg of acrylate emulsion, 15kg of silicone emulsion, 3kg of dibutyl phthalate, 2kg of propylene glycol, 1kg of sodium tripolyphosphate, 2kg of tributyl phosphate; inorganic powder component B: Ordinary Portland cement 80kg, pigment O, talcum powder 20kg. Component A and component B are used in a weight ratio of 1.0:1 to 1.4:1. The coating has high coating flexibility and waterproof performance, and is suitable for waterproofing in engineering fields with special requirements.

[0051] The different examples above provide high-performance polymer cement-based composite waterproof coatings suitable for different occasions with slightly different performance requirements.

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Abstract

A composite water-proof cement-base polymer paint for building is composed of the organic liquid (component A) prepared from acrylate emulsion, siloxane emulsion, dibutyl phthalate, propanediol, sodium tripolyphosphate, and tributyl phosphate, and the inorganic powder (component B) prepared from silicate cement, talk powder and pigment. Said two components are proportionally mixing before it is used. Its advantages are better elasticity and flexibility, high adhesion, and no environmental pollution.

Description

technical field [0001] The invention relates to a composite waterproof paint for building and a preparation method thereof. It specifically relates to a high-performance polymer cement-based composite waterproof coating for waterproofing and anti-seepage in projects such as buildings, bridges, tunnels, undergrounds, and roofs. Background technique [0002] Due to its high brittleness, concrete structures often crack inevitably in engineering applications. This cracking phenomenon will lead to the decrease of water tightness and leakage of the concrete structure, which will affect the service life of the project, and even cannot be used normally. This is a common problem in the construction industry. There are two main reasons for cracks in concrete structures, one is caused by deformation, including shrinkage, expansion, and uneven subsidence caused by changes in temperature and humidity; the other is caused by direct stress of external loads (dynamic and static loads). A...

Claims

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Application Information

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IPC IPC(8): C09D1/06C09D5/16C09D133/08
Inventor 蒋正武孙振平
Owner TONGJI UNIV
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