Organic silicon acrylic acid modified waterborne epoxy emulsion and preparation method thereof
A water-based epoxy emulsion, acrylic technology, applied in the direction of coating, can solve the problems of short pot life, unsatisfactory comprehensive mechanical properties, environmental pollution, etc., to improve impact resistance, excellent comprehensive performance, fine and uniform particle size Effect
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Example Embodiment
[0029] Experimental example 1:
[0030] (1) Preparation of core emulsion
[0031] 292kg of deionized water, reactive emulsifier (including 12kg of allyl polyether sulfate, 12kg of sodium acrylamidoisopropyl sulfonate, 8kg of sodium 2-allyl ether 3-hydroxypropane-1-sulfonate ), auxiliary (A E100 allyl polyether) 3.5 kg, initiator (sodium persulfate) 1.2 kg, epoxy resin E-51 285 kg, epoxy silane (3-glycidyl propyl trimethoxy silane) 11.5kg, 15kg of reactive diluent (butyl glycidyl ether), acrylic monomer (including 9.5kg of styrene, 5kg of methyl methacrylate, 14.5kg of butyl acrylate, and 0.75kg of acrylic acid). The kettle is heated to 85-90° C. and reacted for 1.5 to 2 hours to form a core layer organosilicon acrylic modified waterborne epoxy emulsion.
[0032] (2) Preparation of core-shell structure silicone acrylic modified waterborne epoxy emulsion
[0033] Core layer silicone acrylic modified waterborne epoxy emulsion 669.95kg, drop 327.55kg shell layer pre-emulsified monomer u...
Example Embodiment
[0034] Experimental example 2
[0035] (1) Preparation of core emulsion
[0036] 292kg of deionized water, reactive emulsifier (including 12kg of allyl polyether sulfate, 12kg of sodium acrylamidoisopropyl sulfonate, 8kg of sodium 2-allyl ether 3-hydroxypropane-1-sulfonate ), additives (allyl polyether) 3.5 kg, epoxy resin E-44 270 kg, reactive diluent (butyl glycidyl ether) 30 kg, epoxy silane (3-glycidyl propyl trimethoxy silane) 11.5kg, initiator (potassium persulfate) 1.2kg, acrylate monomers (including 9.5kg of styrene, 5kg of methyl methacrylate, 14.5kg of butyl acrylate, and 0.75kg of acrylic acid) are sequentially added to the reactor under stirring conditions. The temperature is raised to 85-90° C. to react for 1.5-2 hours to form a core layer organosilicon acrylic modified waterborne epoxy emulsion.
[0037] (2) Preparation of core-shell structure silicone acrylic modified waterborne epoxy emulsion
[0038] Core layer silicone acrylic modified waterborne epoxy emulsion 669...
Example Embodiment
[0039] Experimental example 3
[0040] (1) Preparation of core emulsion
[0041] Deionized water 311.9kg, reactive emulsifier (including: allyl polyether sulfate 13kg, acrylamido isopropyl sulfonate 13kg, 2-allyl 3-hydroxypropane-1-sodium sulfonate 9kg , Additives (allyl polyether) 3kg, epoxy silane (3-glycidyl propyl trimethoxysilane) 10kg, initiator (sodium persulfate) 1kg, epoxy resin E-51 392kg, isooctyl 58kg of glycidyl ether, acrylic monomers (including 6kg of styrene, 5kg of methyl methacrylate, 10kg of butyl acrylate, and 0.6kg of acrylic acid) were added to the reactor under stirring conditions, and the temperature was raised to 85-90℃ for 1.5-2 hours , To form a core layer of silicone acrylic modified waterborne epoxy emulsion.
[0042] (2) Preparation of core-shell structure silicone acrylic modified waterborne epoxy emulsion
[0043] Core layer organic silicon acrylic modified waterborne epoxy emulsion 832.5kg, drop 165kg shell pre-emulsion monomer at 83-85℃ (including: ...
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