Composite elastic emulsion with ultra stain resistance, and preparation method thereof
A technology of elastic emulsion and high performance, which is applied in the direction of biocide-containing paint, antifouling/underwater coating, coating, etc., which can solve the problems of chalking, reduced elongation of elastic emulsion, poor adhesion, etc., and achieves low environmental impact , excellent elastic effect
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[0046] Finally, the present invention also provides a method for preparing the composite elastic emulsion, comprising the following steps:
[0047] 1) Preparation of base material liquid A: Add 40-45 parts of deionized water and 0.1-2 parts of emulsifier to a polymerization kettle equipped with a stirrer, condenser, and constant-flow pump feeding device, and heat up until the temperature in the kettle reaches 80-90°C;
[0048] 2) Preparation of nuclear segment pre-emulsion B: Add 5-25 parts of isooctyl acrylate and 50-70 parts of butyl acrylate into the pre-emulsification tank with monomer metering tank and agitator at normal temperature and pressure , 15-35 parts of styrene, 0-3 parts of acrylic acid, 1-5 parts of methacrylic acid, 0.1-2 parts of acrylamide, 0-2 parts of methacrylamide, 0.1-1 part of silicone, 0.1-5 parts of emulsifier 25-35 parts of deionized water, stirred and mixed into a uniform pre-emulsion, and stirred for 20-30 minutes for later use;
[0049] 3) Prep...
Embodiment 1
[0060] A composite elastic emulsion with super anti-staining performance, comprising the following raw materials in parts by weight: 85 parts of deionized water, 8 parts of isooctyl acrylate, 70 parts of butyl acrylate, 20 parts of styrene, 0.1 part of acrylic acid, 1 part of methacrylic acid, 0.2 parts of acrylamide, 0.1 part of methacrylamide, self-made high modulus K 2 SiO 3 10 parts, 0.2 parts of silicone, 0.3 parts of emulsifier, and 0.2 parts of initiator.
[0061] The homemade high modulus K 2 SiO 3 , and its specific preparation process is as follows:
[0062] 1) In a 2L four-neck flask, add a total of 50 parts of nano-low modulus potassium silicate and nano-silica sol, the mass ratio is 1:1, put it in a constant temperature water bath, stir quickly, and add 20 parts of pure water , the temperature is controlled at 50°C, so that the nano-modulus potassium silicate and nano-silica sol are in a stable vortex state, and a diluted nano-modulus potassium silicate and n...
Embodiment 2
[0083] A composite elastic emulsion with super stain resistance, comprising the following raw materials in parts by weight: 100 parts of deionized water, 25 parts of isooctyl acrylate, 85 parts of butyl acrylate, 35 parts of styrene, 1.5 parts of acrylic acid, 3 parts methacrylic acid, 1.5 parts acrylamide, 1 part methacrylamide, homemade high modulus K 2 SiO 3 20 parts, 0.7 parts of silicone, 5 parts of emulsifier, 2 parts of initiator.
[0084] The homemade high modulus K 2 SiO 3 , and its specific preparation process is as follows:
[0085] 1) In a 2L four-neck flask, add a total of 50 parts of nano-low modulus potassium silicate and nano-silica sol, the mass ratio is 1:1, put it in a constant temperature water bath, stir quickly, and add 20 parts of pure water , the temperature is controlled at 60°C, so that the nano-modulus potassium silicate and nano-silica sol are in a stable vortex state, and a diluted nano-modulus potassium silicate and nano-silica sol mixture is...
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Abstract
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