Intumescent flame retardant polybutylene succinate and preparation method thereof
A polybutylene succinate, intumescent flame retardant technology, applied in the field of flame retardant materials, can solve the problems of high cost, complex process, difficult industrialized production, etc., and achieves low production cost, simple process, and pollution-free production. Effect
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[0018] Example 1:
[0019] First, polybutylene succinate was dried at 65°C for 12 hours, the intumescent flame retardant was dried at 80°C for 12 hours, and the silica was dried at 70°C for 12 hours.
[0020] The 40 grams of polybutylene succinate that has undergone the above drying treatment is melted in an internal mixer (the temperature is about 115°C), and then 8.31 grams of ammonium polyphosphate, 1.19 dicyandiamide and 0.5 grams of silica are added. Melt and blend for 10-15 minutes at a rotation speed of 30 rpm. The intumescent flame retardant and synergist form a nano-level dispersion in the polybutylene succinate matrix, and the material is fed to obtain the intumescent flame-retardant polybutylene of the present invention. Butanediol diacid.
[0021] By using a limiting oxygen index tester and a vertical combustion tester to test the intumescent flame-retardant polybutylene succinate sample prepared in this example, it can be seen that the oxygen index of this material is a...
Example Embodiment
[0024] Example 2:
[0025] First, polybutylene succinate was dried at 70°C for 8 hours, the intumescent flame retardant was dried at 80°C for 12 hours, and the silica was dried at 80°C for 12 hours.
[0026] Melt 42.5 grams of the above-mentioned dried polybutylene succinate in an internal mixer (the temperature is about 115°C), and then add 4.8 grams of compound composed of melamine phosphate and ammonium polyphosphate in a mass ratio of 1:2 The compound, 1.2 grams of melamine and 1.5 grams of silicon dioxide are blended for 10-15 minutes at a speed of 30 rpm. The intumescent flame retardant and synergist form a nano-level dispersion in the polybutylene succinate matrix. Material, the expanded flame-retardant polybutylene succinate is obtained.
[0027] By using a limiting oxygen index tester and a vertical combustion tester to test the intumescent flame-retardant polybutylene succinate sample prepared in this example, it can be seen that the oxygen index of this material is as hig...
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