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Outer wall elastic emulsion with lotus effect and preparing method of outer wall elastic emulsion

An elastic emulsion, lotus leaf effect technology, applied in the direction of biocide-containing paints, coatings, antifouling/underwater coatings, etc., can solve the problems of elasticity, stain resistance, and elasticity decline of elastic coatings for exterior walls. , to achieve the effect of low rigidity, small environmental impact, excellent abnormal temperature and low temperature elasticity

Active Publication Date: 2017-04-19
广东巴德富新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The obvious defect of this method is that the elasticity of the exterior wall elastic coating decreases due to the increase of PVC, especially at low temperature; 2. The high hardness emulsion is mixed in the exterior wall elastic coating to make the exterior wall elastic coating dry and form a film Higher hardness and better stain resistance
The obvious defect of this method is that the elasticity of the elastic coating for exterior walls decreases due to the increase in hardness, especially at low temperature.
Therefore, neither of the existing two widely used technologies can solve the contradiction between the elasticity and stain resistance of elastic coatings for exterior walls

Method used

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Examples

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preparation example Construction

[0029] The preparation method of the exterior wall elastic emulsion with lotus leaf effect of the present invention comprises the following steps:

[0030] a. Preparation of base liquid A: Add 40-45 parts of deionized water and 0.2-1.8 parts of compound emulsifier to the polymerization kettle with agitator, condenser and constant flow pump feeding device, and heat up to the temperature in the kettle Reach 60-90°C;

[0031] b. Preparation of pre-emulsion B: add 41-56 parts of isooctyl acrylate, 32-45 parts of butyl acrylate, 9.4 parts of styrene to the pre-emulsification tank with monomer metering tank and agitator at normal temperature and pressure -12.6 parts, methyl methacrylate 8.6-12.4 parts, acrylic acid 0.3-1.6 parts, methacrylic acid 0.6-1.9 parts, acrylamide 0.3-0.6 parts, methacrylamide 0-0.65 parts, hydroxyethyl acrylate 0.6- 1.3 parts, 0-1.5 parts of hydroxyethyl methacrylate, 0.5-5 parts of wax emulsion, 1.4-5.4 parts of compound emulsifier, 40-45 parts of deioniz...

Embodiment 1

[0038] A kind of external wall elastic emulsion with lotus leaf effect, its raw material composition includes the following components in parts by weight: 90 parts of deionized water; 41 parts of isooctyl acrylate; 32 parts of butyl acrylate; 9.4 parts of styrene; 8.6 parts of methyl acrylate; 0.3 parts of acrylic acid; 0.6 parts of methacrylic acid; 0.3 parts of acrylamide; 0.5 parts of methacrylamide; 0.6 parts of hydroxyethyl acrylate; 0.5 parts of hydroxyethyl methacrylate; 2.1 parts of emulsifier; 0.3 parts of initiator.

[0039] The wax emulsion is a stable emulsion of a solid-oil-water multiphase dispersion system formed by uniformly dispersing polyethylene wax in water through the emulsification of an emulsifier, with a solid content of 30%-50%, a pH of 7-9, and a particle size of 99%<1 μm, the ionic type is anionic and nonionic; the emulsifier is formed by mixing sodium lauryl sulfate and lauryl alcohol polyoxyethylene ether, and the dosage is suitable for preparing a...

Embodiment 2

[0049] A kind of exterior wall elastic emulsion with lotus leaf effect, its raw material composition includes the following components in parts by weight: 103 parts of deionized water; 46 parts of isooctyl acrylate; 38 parts of butyl acrylate; 12.6 parts of styrene; 10 parts of methyl acrylate; 0.8 parts of acrylic acid; 1.2 parts of methacrylic acid; 0.4 parts of acrylamide; 0.6 parts of methacrylamide; 1.3 parts of hydroxyethyl acrylate; 1.5 parts of hydroxyethyl methacrylate; 3.5 parts of wax emulsion; 6.8 parts of emulsifier; 0.8 parts of initiator.

[0050] The wax emulsion is a stable emulsion of a solid-oil-water multiphase dispersion system formed by uniformly dispersing polypropylene wax and paraffin in water through the emulsification of an emulsifier, with a solid content of 30%-50% and a pH of 7-9 , the particle size is 99%<1 μm, and the ion type is anionic and non-ionic; the emulsifier is formed by mixing sodium lauryl sulfate and lauryl polyoxyethylene ether, and...

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Abstract

The invention aims at overcoming the defects in the prior art, and provides outer wall elastic emulsion with a lotus effect and a preparing method of the outer wall elastic emulsion. The outer wall elastic emulsion has excellent normal-temperature and low-temperature elasticity and also has good stain resistance. The outer wall elastic emulsion with the lotus effect comprises raw materials including, by weight, 90-110 parts of deionized water, 41-56 parts of 2-ethylhexyl acrylate, 32-45 parts of butyl acrylate, 9.4-12.6 parts of styrene, 8.6-12.4 parts of methyl methacrylate, 0.3-1.6 parts of crylic acid, 0.6-1.9 parts of methacrylic acid, 0.3-0.6 part of acrylamide, 0-0.65 part of methacrylamide, 0.6-1.3 parts of hydroxyethyl acrylate, 0-1.5 parts of hydroxyethyl methylacrylate, 0.5-5 parts of wax emulsion, 2-6 parts of compound emulsifier and 0.2-4 parts of initiator.

Description

technical field [0001] The invention relates to an acrylate emulsion and a preparation method thereof, in particular to an exterior wall elastic emulsion with a lotus leaf effect and a preparation method thereof. Background technique [0002] As the ambient temperature alternates, the concrete exterior walls of buildings expand and contract, creating damaging cracks. Elastic coatings for exterior walls are popular in the market due to their good thermal expansion and contraction properties, which can effectively solve the problem of destructive cracks on the surface of building bases. The main component of the elastic coating for external walls is elastic emulsion, whose glass transition temperature is lower than the ambient temperature, and it is an elastomer at the ambient temperature used. Elastic coatings for exterior walls have good tensile properties due to their good elasticity and soft coating film. However, while the elastic coating for external walls effectively ...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F212/08C08F220/14C08F220/06C08F220/56C08F220/54C08F220/28C08F2/26C08F2/30C08F2/44C09D133/08C09D5/16
CPCC08F2/26C08F2/30C08F2/44C08F220/18C08F220/1808C09D5/1637C09D5/1687C09D133/08C08L91/06C08F220/1804C08F212/08C08F220/14C08F220/06C08F220/56C08F220/281
Inventor 董宇军卢勇杨文涛
Owner 广东巴德富新材料有限公司
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