Method for preparing core-shell nano SiO2/fluorine-containing polyacrylate soap-free emulsion
A polyacrylate, soap-free emulsion technology, used in textiles, papermaking, fiber processing, etc., can solve problems such as adverse effects on the environment and operator safety, reducing film adhesion, antifouling, and emulsion stability. Elimination of adverse effects, excellent water and oil repellency, small dispersion effect
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[0020] Example 1:
[0021] 1) In parts by mass, mix 5 parts of methyl methacrylate, 33 parts of butyl acrylate, 3 parts of sodium allyloxy hydroxypropyl sulfonate, and 38 parts of deionized water, then stir at high speed Emulsify for 10 minutes to obtain a milky white stable pre-emulsion A;
[0022] 2) According to mass parts, mix 10 parts of methyl methacrylate, 6 parts of lauryl acrylate, 3 parts of dodecafluoroheptyl methacrylate, 10 parts of γ-methacryloxypropyl Trimethoxysilane, 3 parts of sodium allyloxy hydroxypropyl sulfonate with a mass ratio of 1:2 and 1-allyloxy-3-(4-nonylphenol)-2-propanol polyoxyethylene (10) Mix the anionic polymerizable emulsifier formed by mixing ether monophosphoric acid with 25 parts of deionized water, then stir and emulsify at high speed for 30 minutes to obtain a milky white stable pre-emulsion B;
[0023] 3) According to the mass parts, add 23 parts of deionized water, 0.2 parts of potassium persulfate and 1 / 4 part of pre-emulsion A to a three...
Example Embodiment
[0026] Example 2:
[0027] 1) According to the mass parts, mix 30 parts of methyl methacrylate, 8 parts of butyl acrylate, 2 parts of 2-acrylamido-2-methyl-propyl sulfonate, 20 parts of deionized Mix with water, then stir and emulsify at high speed for 20 minutes to obtain a milky white stable pre-emulsion A;
[0028] 2) In parts by mass, combine 10 parts of butyl acrylate, 1 part of hexadecyl acrylate, 20 parts of trifluoroethyl acrylate, 10 parts of γ-methacryloxypropyltrimethoxysilane, Mix 3 parts of 1-allyloxy-3-(4-nonylphenol)-2-propanol polyoxyethylene (10) ether ammonium sulfate and 40 parts of deionized water, then stir and emulsify for 30 minutes at high speed to obtain milky white Stable pre-emulsion B;
[0029] 3) In parts by mass, add 46 parts of deionized water, 0.5 parts of sodium persulfate and 1 / 6 parts of pre-emulsion A to a three-necked bottle equipped with a stirrer, a thermometer and a feeding device at 85°C React for 30 minutes, and then drop in the remaining ...
Example Embodiment
[0032] Example 3:
[0033] 1) According to mass parts, mix 9 parts of methyl methacrylate, 14 parts of butyl acrylate, 1 part of sodium allyloxy hydroxypropyl sulfonate, and 26 parts of deionized water, and then stir at high speed Emulsify for 20 minutes to obtain a milky white stable pre-emulsion A;
[0034] 2) According to mass parts, add 8 parts of methyl methacrylate, 6 parts of butyl acrylate, 3 parts of octadecyl acrylate, 10 parts of octafluoropentyl methacrylate, and 9 parts of γ-formyl Acryloyloxypropyl trimethoxysilane, 3 parts composed of 1-allyloxy-3-(4-nonylphenol)-2-propanol polyoxyethylene (10) ether ammonium sulfate and nonylphenol polyoxy The emulsifier compound formed by mixing ethylene (4) ether acrylate and 32 parts of deionized water are mixed, and then stirred and emulsified at high speed for 10 minutes to obtain a milky white stable pre-emulsion B; among them, the added emulsifier compound contains 1-ene The mass fraction of propoxy-3-(4-nonylphenol)-2-prop...
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