Water-based high-elasticity acrylic acid waterproof coating and preparation method thereof

A high-elastic acrylic and waterproof coating technology, applied in the coating and other directions, can solve the problems of complicated preparation methods, and achieve the effects of good water impermeability, accelerated coating drying process, good weather resistance and yellowing resistance

Pending Publication Date: 2022-04-22
广东腐蚀科学与技术创新研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Another example: Patent Application CN112961553A "A One-Component Acrylic Waterproof Coating and Its Preparation Method", the waterproof coating produced by this patent application does not contain asphalt system, but this application introduces a relatively large amount of Tetrafluoroethylene, the preparation method is relatively complicated

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  • Water-based high-elasticity acrylic acid waterproof coating and preparation method thereof
  • Water-based high-elasticity acrylic acid waterproof coating and preparation method thereof
  • Water-based high-elasticity acrylic acid waterproof coating and preparation method thereof

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Embodiment

[0054] In an embodiment, the preparation method of waterborne highly elastic acrylic waterproof coating, comprising the following steps:

[0055] (1) Prepare carboxyethyl cellulose propionate. The carboxyethyl cellulose is activated to obtain a reactive carboxyethyl cellulose. The activated carboxyethyl cellulose is added to the esterification solution in the organic acid solvent system, and after esterification, hydrolysis, neutralization, and water washing twice, the carboxyethylcellulose propionate acetate (CECAP) can be obtained. Among them, the organic acid solvent is acetic acid, and the esterification solution is a mixture of acetic anhydride, propionic anhydride and concentrated sulfuric acid.

[0056] a. Activation

[0057] 100 servings of commercially available carboxyethyl cellulose were submerged in a concentration of 15wt% acetic acid twice, and then immersed in propionic acid at a concentration of 15wt% twice (each soak, the weight ratio of acid to carboxyethyl cellu...

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Abstract

The invention relates to the field of building waterproof materials, in particular to a water-based high-elasticity acrylic acid waterproof coating and a preparation method thereof. The water-based high-elasticity acrylic acid waterproof coating is prepared from the following components in parts by weight: 30 to 45 parts of prefabricated slurry, 40 to 55 parts of polyacrylate emulsion, 0.1 to 0.3 part of a de-foaming agent, 3.0 to 7.0 parts of an environment-friendly plasticizer, 0.6 to 1.0 part of an anti-scratch agent and 0.6 to 1.0 part of a rheological additive. The preparation method comprises the following steps: preparing carboxyethyl acetate cellulose propionate, preparing polyacrylate emulsion, preparing prefabricated slurry and preparing the high-elastic acrylic acid waterproof coating. The coating is pure white in color and good in weather resistance and yellowing resistance, after artificial solarization aging is accelerated for 2000 h, color yellowing is not found by naked eyes, and the coating does not have the phenomena of pulverization, cracking and falling off.

Description

Technical field [0001] The present invention relates to the field of building waterproofing materials, specifically a water-based highly elastic acrylic waterproof coating and preparation method thereof. Background [0002] Waterproof coatings are widely used in construction, road and bridge facilities, sewage tanks, underground engineering and other fields. Traditionally, asphalt linoleum was used as a waterproof material. Due to the limited weather resistance of asphalt systems, the top of the asphalt linoleum needs to be covered with cement mortar or protective coating. Cement mortar is hard, long-term sun and rain, temperature changes are easy to crack and pulverize the mortar layer, and then make the waterproof layer ineffective. The protective coating with synthetic resin as the main body has good weather resistance and is a better technical solution. [0003] At present, acrylic, polyurethane and other systems are also used as film-forming substances for waterproof coatin...

Claims

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Application Information

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IPC IPC(8): C09D133/08C09D7/63C09D7/65C08B13/00C08F220/18C08F220/14
CPCC09D133/08C09D7/63C09D7/65C08B13/00C08F220/1804C08F220/1808C08L2201/08C08L1/32C08L83/04C08K5/11C08F220/14C08F220/1811C08F2500/26
Inventor 周达朗刘福春韩恩厚
Owner 广东腐蚀科学与技术创新研究院
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