Novel fluorine-containing siloxane fire retardant, and preparation method and application thereof
A technology of siloxane and flame retardant, which is applied in the field of new fluorine-containing siloxane flame retardant and its preparation, can solve the problems of elimination, improvement of drop resistance, and reduction of heat release rate of flame-retardant polypropylene, etc., to achieve The effect of improving water resistance
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Embodiment 1
[0061] A preparation method of a novel fluorine-containing silicone flame retardant, comprising the steps of:
[0062] (1) Mix the organosiloxane monomer evenly, add it to the aqueous solution dissolved with the catalyst and emulsifier, react at 30°C for 10 hours, and obtain the organopolysiloxane core emulsion; among them, the organosiloxane monomer The total mass of the water is 40% of the water quality, the consumption of the catalyst is 1% of the mass of the organosiloxane monomer, and the consumption of the emulsifier is 1% of the mass of the organosiloxane monomer;
[0063] (2) Adjust the pH value of the organopolysiloxane core emulsion to 9 with lye, then add fluorine-containing styrene monomer and comonomer, then add initiator, crosslinking agent and chain transfer agent, at 75°C Under stirring reaction 10h, obtain the polymer emulsion of organopolysiloxane grafted fluorine-containing styrene; Wherein, the consumption of fluorine-containing styrene monomer is 5% of org...
Embodiment 2
[0081] A preparation method of a novel fluorine-containing silicone flame retardant, comprising the steps of:
[0082] (1) Mix the organosiloxane monomer evenly, add it to the aqueous solution dissolved with the catalyst and emulsifier, and react at 40°C for 8 hours to obtain the organopolysiloxane core emulsion; among them, the organosiloxane monomer The total mass of the catalyst is 45% of the water quality, the consumption of the catalyst is 2% of the mass of the organosiloxane monomer, and the consumption of the emulsifier is 5% of the mass of the organosiloxane monomer;
[0083] (2) Adjust the pH value of the organopolysiloxane core emulsion to 10 with lye, then add fluorine-containing styrene monomer and comonomer, then add initiator, crosslinking agent and chain transfer agent, at 78°C Under stirring reaction 8h, obtain the polymer emulsion of organopolysiloxane grafted fluorine-containing styrene; Wherein, the consumption of fluorine-containing styrene monomer is 8% of...
Embodiment 3
[0101] A preparation method of a novel fluorine-containing silicone flame retardant, comprising the steps of:
[0102] (1) Mix the organosiloxane monomer evenly, add it to the aqueous solution dissolved with the catalyst and emulsifier, react at 55°C for 7 hours, and obtain the organopolysiloxane core emulsion; among them, the organosiloxane monomer The total mass of the catalyst is 50% of the water quality, the consumption of the catalyst is 3% of the mass of the organosiloxane monomer, and the consumption of the emulsifier is 10% of the mass of the organosiloxane monomer;
[0103] (2) Adjust the pH value of the organopolysiloxane core emulsion to 10.5 with lye, then add fluorine-containing styrene monomer and comonomer, then add initiator, cross-linking agent and chain transfer agent, at 82°C Under stirring reaction 7h, obtain the polymer emulsion of organopolysiloxane grafted fluorine-containing styrene; Wherein, the consumption of fluorine-containing styrene monomer is 10%...
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