Elastic phenylethylene-ester acrylate water-proof emulsion and preparation method thereof

Abstract

This invention relates to elasticity styrene - acrylate waterproof latices and its preparation method. It is polymerized by nine kind component and seed emulsion. The preparation method includes as follows steps: whip, vacuumize, whip, polymerization, thermal insulation, cooling, thermal insulation, cooling, filter, casing. This invention has low cost, stable color phase, moderate consistency, good acid and alkaline protection, and lower vitrification point. It can effectively eliminate liberation monomer, avoid enviroment pollution. This invention especially fit for cement group polymer waterproof, waterproofing work as well as impervious seal stuff.

Description

1. Technical field [0001] The invention relates to the technical field of fine chemicals, especially elastic styrene-acrylate waterproof emulsion and its preparation method. Crack filling material application. 2. Background technology [0002] At present, there are many types of emulsions that can be used for waterproof materials on the market. The pure acrylic TRC elastic emulsion of Jiangsu Sunrise Group and the CEMBOND 601 styrene-acrylic emulsion produced by American National Starch are the advanced representatives, both of which are used to prepare waterproof materials. . There are following deficiencies in these two kinds of emulsions and the waterproof material prepared with the emulsion: the one, the emulsion hue is unstable, the bonding strength with the cement base surface is less than 1.0Mpa, the tensile strength is less than 1.5Mpa and the elongation at break is less than 60% , and the tensile strength and elongation at break cannot meet the requirements of the...

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Problems solved by technology

There are following deficiencies in these two kinds of emulsions and the waterproof material prepared with the emulsion: the one, the emulsion hue is unstable, the bonding strength with the cement base surface is less than 1.0Mpa, the tensile strength is less than 1.5Mpa and the elongation at break is less than 60% , and the tensile strength and elongation at break cannot meet the requirements of the national standard at the same time; the second is that the cement-based polymer waterproof coating prepared with this emulsion is prone to chemical reactions with the alkaline substances in the cement, resulting in instability, swelling, and thickening , causing the elongation at break and tensile strength of the waterproof coating to fail to meet the national building materials industry GB / JCT 894-2001 cement-based polymer waterproof coating technical indicators; the third is that the cement-based polymer waterproof coating prepared with the emulsion is easy to change green Phase, blue phase, black phase, swelling, thickening, short usable time, poor construction performance

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