Styrene-acrylic waterproof latex and preparation method thereof

A waterproof emulsion, styrene-acrylic technology, applied in the coating and other directions, can solve the problems of difficulty in balancing tensile strength and elongation at break, poor affinity between polymers and cement, microstructure defects, etc., to achieve moderate consistency, The effect of stable product quality and simple preparation process
CN109160971APending Publication Date: 2019-01-08北京宝辰联合科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
北京宝辰联合科技股份有限公司
Publication Date
2019-01-08

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Abstract

The invention discloses a styrene-acrylic waterproof latex and a preparation method thereof. The latex comprises the following raw materials in parts by weight: 20-30 parts of styrene, 10-18 parts ofmethyl methacrylate, 12-20 parts of methyl acrylate, 40-50 parts of butyl acrylate, 0.2-0.8 parts of acrylic acid, 1.0-2.0 parts of acrylamide, 1-3 parts of an emulsifier, 0.5-1.5 parts of an evocating agent and 0.2-0.8 parts of a buffering agent. The waterproof latex provided by the invention has low coagulating rate and moderate viscosity, thereby effectively solving the compatibility problem between the styrene-acrylic waterproof latex and powder materials such as cement, and also solving the difficult problem of poor compatibility between a macromolecule polymer and the cement with a filmformed on the surface. The latex has super flexibility, the tensile strength and the elongation at break are much higher than the requirements in the national standard and better than the waterproof latex sold with good performance on the market, and the product quality is stable, so that the bond strength between the film and the base is ensured to be high and the performances in water resistance, alkali resistance and weather resistance are high in practical application.
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Description

technical field

[0001] The invention belongs to the technical field of building materials, and in particular relates to a styrene-acrylic waterproof emulsion and a preparation method thereof. technical background

[0002] JS waterproof coating is composed of organic materials and inorganic materials. It has the advantages of good flexibility of organic materials and strong rigidity of inorganic materials. It has the characteristics of high elasticity, high elongation, durability and water resistance. Since the resin emulsion for paint is a water-based system, the product is non-toxic and pollution-free, clean and environmentally friendly, safe in transportation and construction, and has incomparable advantages compared with other waterproof materials.

[0003] At present, the commonly used resin emulsions for JS waterproof coatings on the market mainly include polyacrylate emulsions, polyvinyl acetate-ethylene emulsions, and polystyrene-acrylate emulsions. In addition, there...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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