Paligorskite ethene-vinyl acetate composite flame-proof material
A vinyl acetate, composite flame retardant technology, applied in the direction of fire retardant coatings, etc., can solve the problems of high addition price, unfavorable promotion and application, etc., and achieve the effects of low cost, smoke suppression and toxic gas, and stable performance.
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Embodiment 1
[0020] Example 1: The natural palygorskite is finely ground and crushed to 100-5000 mesh (particle size is 0.26-2.0um), and then the palygorskite powder and ammonium polyphosphate are mechanically blended at a ratio of 1:1 The method is fully mixed to obtain palygorskite composite flame retardant. The palygorskite composite flame retardant obtained above is fully mixed with ethylene-vinyl acetate copolymer at a weight ratio of 45%, 55%, and injection-molded on an injection molding machine by a conventional injection molding process to obtain a flame-retardant ethylene-vinyl acetate Copolymer composites. Determination of its performance indicators are as follows:
[0021] The oxygen index can reach 28; the combustion performance is UL94-0.
Embodiment 2
[0022] Example 2: The natural palygorskite is finely ground and crushed to 100-5000 mesh (particle size is 0.26-2.0um), and then the palygorskite powder and pentaerythritol are mechanically mixed in a ratio of 1:1 to fully Mixed to obtain palygorskite composite flame retardant. The palygorskite composite flame retardant obtained above is fully mixed with ethylene-vinyl acetate copolymer at a weight ratio of 45%, 55%, and injection-molded on an injection molding machine by a conventional injection molding process to obtain a flame-retardant ethylene-vinyl acetate Copolymer composites. Determination of its performance indicators are as follows:
[0023] The oxygen index can reach 28; the combustion performance is UL94-1
Embodiment 3
[0024] Embodiment 3: After the natural palygorskite is selected and crushed to 100-5000 mesh (particle size is 0.26-2.0um), then the mixture of palygorskite powder and ammonium polyphosphate and pentaerythritol (ammonium polyphosphate and The ratio of pentaerythritol is 1:0.1) and the ratio of 1:2 is fully mixed by means of mechanical blending to obtain the palygorskite composite flame retardant. The palygorskite composite flame retardant obtained above is fully mixed with ethylene-vinyl acetate copolymer at a weight ratio of 40% and 60%, and injection-molded on an injection molding machine by a conventional injection molding process to obtain a flame-retardant ethylene-vinyl acetate copolymer. Copolymer composites. Determination of its performance indicators are as follows:
[0025] The oxygen index can reach 28, and the combustion performance is UL94-0
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