Organic silicon-acrylic ester copolymer emulsion and preparation and application thereof
A technology of acrylate and butyl acrylate, which is applied in the field of polymers, can solve the problems of insufficient paint adhesion, weather resistance, water resistance and stain resistance, poor stain resistance, water resistance and adhesion, and achieve simple construction methods Ease of operation, improved anti-sticking performance, and the effect of overcoming high energy consumption
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[0052] Example 1
[0053] (1) Preparation of silicone-acrylate copolymer emulsion
[0054] Raw material ratio: in parts by weight
[0055] Silicone 1 part 3-glycidylpropyltrimethoxysilane, 1 part methyl methacrylate, 1 part butyl acrylate, 1 part methacrylic acid, 1 part β-hydroxypropyl methacrylate, hydrogen carbonate 1 part of sodium, 1 part of potassium persulfate, 1 part of complex emulsifier (0.5 part of non-ionic emulsifier Tween-20, 0.5 part of ionic emulsifier sodium lauryl sulfate), 1 part of deionized water.
[0056] Process: add deionized water, compound emulsifier and 0.2 parts of silicone, 0.2 parts of methyl methacrylate, 0.2 parts of butyl acrylate, 0.2 parts of methacrylic acid and 0.2 parts of methacrylic acid-β-hydroxypropyl ester were pre-emulsified with stirring at 20°C for 100min; the temperature was raised to 60°C, then the remaining mixed monomers and potassium persulfate were added dropwise to the flask, stirred Under the polymerization reaction fo...
Example Embodiment
[0063] Example 2
[0064] (1) Silicone-acrylate copolymer emulsion is prepared from the following raw materials and processes:
[0065] Raw material ratio: in parts by weight
[0066] Silicone 10 parts methacrylate propyl trimethoxysilane, 20 parts methyl methacrylate, 30 parts butyl acrylate, 10 parts acrylic acid, 20 parts β-hydroxypropyl methacrylate, 5 parts sodium bicarbonate , 5 parts of ammonium persulfate, 5 parts of compound emulsifier (1 part of non-ionic emulsifier Tween-20, 4 parts of ionic sodium lauryl sulfate), 30 parts of deionized water.
[0067] Process: Add deionized water, compound emulsifier, 0.5 parts of silicone, 1 part of methyl methacrylate, 1.5 parts of butyl acrylate to a four-necked flask equipped with an electric stirrer, a thermometer, a condenser and a dropping funnel , 0.5 part of acrylic acid, 1 part of methacrylic acid-β-hydroxypropyl ester, stirred and pre-emulsified at 70 ° C for 20 min; heated to 85 ° C, then the remaining mixed monomer...
Example Embodiment
[0074] Example 3
[0075] (1) Silicone-acrylate copolymer emulsion is prepared from the following raw materials and processes:
[0076] Raw material ratio: in parts by weight
[0077] 30 parts of silicone aminopropyl triethoxysilane, 50 parts of methyl methacrylate, 20 parts of butyl acrylate, 30 parts of fumaric acid, 20 parts of β-hydroxypropyl methacrylate, 8 parts of sodium bicarbonate , 8 parts of potassium persulfate, 8 parts of compound emulsifier (1 part of non-ionic emulsifier Tween-20, 7 parts of ionic sodium lauryl sulfate), 40 parts of deionized water.
[0078] Process: Add deionized water, compound emulsifier, 3 parts of silicone, 5 parts of methyl methacrylate, 2 parts of butyl acrylate to a four-necked flask equipped with an electric stirrer, a thermometer, a condenser and a dropping funnel , 3 parts of fumaric acid, 2 parts of β-hydroxypropyl methacrylate, stirred and pre-emulsified at 60°C for 40min; heated to 80°C, then the remaining mixed monomers and po...
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