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Polymer cement waterproof coating

A waterproof coating and polymer technology, applied in the direction of coating, etc., can solve the problems of easy re-swelling of cured film by water, poor waterproof effect, low fastness, etc., to improve performance and firmness, prevent re-swelling, and improve water resistance sexual effect

Inactive Publication Date: 2017-12-22
常州市宝平不绣钢制品有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: the current polymer cement waterproof coating is simply a mixture of ordinary acrylic emulsion and cement-based coating, and the formed cured film is easily swelled by water again, resulting in poor waterproof effect and low fastness problem, the invention provides a polymer waterproof coating and preparation method thereof

Method used

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Experimental program
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preparation example Construction

[0019] The preparation method of modified acrylate emulsion:

[0020] (1) The raw materials are calculated in parts by weight, 90-100 parts of distilled water, 70-80 parts of ethyl acrylate, 40-50 parts of methacrylate, 30-35 parts of acrylic acid, 15-18 parts of methyl vinyl dichloride Silane, 14-18 parts of butanol, 10-12 parts of maleic anhydride, 6-8 parts of fatty acid polyoxyethylene ester, 2-6 parts of ammonium persulfate, 1-3 parts of dodecyl betaine, 1-2 parts Lewis acid;

[0021] (2) Put distilled water, ethyl acrylate, methacrylate, methyl vinyl dichlorosilane, polyoxyethylene fatty acid ester, and dodecyl betaine into the reactor, and stir at 200r / min for 40-50min, Use nitrogen to discharge the gas in the reactor, and raise the temperature to 70-75°C, add acrylic acid to the container, mix at 300r / min for 20-30min, then add ammonium persulfate of 70-80% of the total mass of ammonium persulfate, Keep warm for 2-4 hours;

[0022] (3) After the heat preservation is...

example 1

[0029] The preparation method of modified acrylate emulsion:

[0030] (1) The raw materials are calculated in parts by weight, 95 parts of distilled water, 75 parts of ethyl acrylate, 45 parts of methacrylate, 33 parts of acrylic acid, 17 parts of methyl vinyl dichlorosilane, 15 parts of butanol, 11 parts of horse Toric anhydride, 7 parts of polyoxyethylene fatty acid ester, 5 parts of ammonium persulfate, 2 parts of lauryl betaine, 1.5 parts of Lewis acid;

[0031] (2) Put distilled water, ethyl acrylate, methacrylate, methyl vinyl dichlorosilane, fatty acid polyoxyethylene ester, and dodecyl betaine into the reactor, stir at 200r / min for 45min, and use nitrogen Discharge the gas in the reactor, raise the temperature to 73°C, add acrylic acid to the container, mix at 300r / min for 25min, then add ammonium persulfate of 75% of the total mass of ammonium persulfate, and keep warm for 3h;

[0032] (3) After the heat preservation is completed, add maleic anhydride and Lewis acid,...

example 2

[0039] The preparation method of modified acrylate emulsion:

[0040] (1) The raw materials are calculated in parts by weight, 100 parts of distilled water, 80 parts of ethyl acrylate, 50 parts of methacrylate, 35 parts of acrylic acid, 18 parts of methyl vinyl dichlorosilane, 18 parts of butanol, 12 parts of horse Toric anhydride, 8 parts of fatty acid polyoxyethylene ester, 6 parts of ammonium persulfate, 3 parts of lauryl betaine, 2 parts of Lewis acid;

[0041] (2) Put distilled water, ethyl acrylate, methacrylate, methyl vinyl dichlorosilane, fatty acid polyoxyethylene ester, and dodecyl betaine into the reactor, stir at 200r / min for 50min, and use nitrogen Discharge the gas in the reactor, and raise the temperature to 75°C, add acrylic acid to the container, mix at 300r / min for 30min, then add ammonium persulfate of 80% of the total mass of ammonium persulfate, and keep warm for 4h;

[0042] (3) After the heat preservation is completed, add maleic anhydride and Lewis ac...

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Abstract

The invention belongs to the technical field of waterproof coatings, and particularly relates to a polymer cement waterproof coating. According to the polymer cement waterproof coating disclosed by the invention, by using ethyl acrylate, methyl acrylate and the like as basic raw materials, acrylate emulsion is synthesized; in a synthesizing process, the acrylate emulsion is modified by using silicone monomer methyl vinyl dichlorosilane; a silicon-oxygen bond is introduced, so that binding degree between the silicon-oxygen bond and cement is increased, performance and firmness of the membrane is improved; meanwhile, under an effect of Lewis acid, an unsaturated bond is introduced by using maleic anhydride, so that an active group of the emulsion is increased, an effect of the unsaturated bond and calcium ions is increased, water tolerance is further improved, and the photographic property of the emulsion is also improved; by compounding with butanol, the flowability of the membrane in the early stage is improved; by utilizing unrecoverable performance of calcination of kyanite is utilized, pore formation in the cement is carried out, and contact performance of the cement and the emulsion is increased; meanwhile, the emulsion is compounded with o-cresol aldehyde epoxy resin, so that performance of self-curing membrane formation of the coating is increased, and the phenomenon that a curing membrane is easily swelled by water again is avoided.

Description

technical field [0001] 3. The invention belongs to the technical field of waterproof coatings, in particular to a polymer cement waterproof coating. Background technique [0002] 5. Polymer cement waterproof coating is a two-component water-based architectural waterproof coating prepared by adding acrylate polymer emulsion and cement as the main raw materials and adding other admixtures. The products are divided into Type I and Type II. Type I is mainly polymer, which is mainly used for building waterproofing projects in non-long-term flooding environments; Type II is mainly cement, and is mainly used for building waterproofing projects in long-term flooding environments. . This kind of coating not only has the extensibility and water resistance of polymer coating film, but also has the advantages of high strength of water-based gelling material and easy bonding with wet base. However, there are still problems such as unsatisfactory mechanical properties, poor impermea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D7/12C08F8/46C08F8/42C08F220/18C08F220/10C08F220/06
CPCC08F8/46C08F220/18C08F2810/30C08K2003/265C08K2201/014C09D133/08C08L63/00C08K13/02C08K3/34C08K3/26C08K5/05C08F220/10C08F220/06C08F8/42
Inventor 刘芳
Owner 常州市宝平不绣钢制品有限公司
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