Flame-retardant and high-impact-resistance polystyrene composition and preparation method thereof
A technology for flame-retardant high-impact polystyrene and its composition, which is applied in the field of flame-retardant high-impact polystyrene composition and its preparation, and can solve the problems of no cost advantage, increased content of brominated flame retardants, rising costs, etc. question
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Embodiment 1
[0050] According to the ratio, 8 parts of decabromodiphenylethane, 4 parts of bromotriazine, 2.5 parts of antimony trioxide, 0.1 part of antioxidant 1076, 0.2 part of antioxidant 168, and 0.2 part of modified polytetrafluoroethylene , 1 part of ethylene bisstearamide, 0.5 part of aluminum hypophosphite and 0.2 part of dicumyl chloride were mixed uniformly in a high-speed mixer at a speed of 800-1000 r / min for 5 minutes to obtain a uniform first mixing material;
[0051] Mix 82 parts of HIPS resin and 3 parts of styrene-butadiene-styrene block copolymer in a low mixing pot to obtain the second mixture;
[0052] The first mixed material and the second mixed material are passed through a separate weight loss weighing scale, and several types of twin-screw extruders are added at the same time. 200°C, 200°C, 200°C, 200°C, 210°C, head temperature 210°C, screw length-to-diameter ratio 36:1, screw speed control 400-450r / min, after the material is melted in the screw, it is extruded, ...
Embodiment 2
[0054] According to the ratio, 5 parts of decabromodiphenylethane, 4 parts of bromotriazine, 2.5 parts of antimony trioxide, 0.1 part of antioxidant 1076, 0.2 part of antioxidant 168, and 0.2 part of modified polytetrafluoroethylene , 1 part of ethylene bisstearamide, 0.5 part of aluminum hypophosphite and 0.2 part of dicumyl chloride were mixed uniformly in a high-speed mixer at a speed of 800-1000 r / min for 5 minutes to obtain a uniform first mixing material;
[0055] Mix 85 parts of HIPS resin and 3 parts of styrene-butadiene-styrene block copolymer in a low mixing pot to obtain the second mixture;
[0056] The first mixed material and the second mixed material are passed through a separate weight loss weighing scale, and several types of twin-screw extruders are added at the same time. 200°C, 200°C, 200°C, 200°C, 210°C, head temperature 210°C, screw length-to-diameter ratio 36:1, screw speed control 400-450r / min, after the material is melted in the screw, it is extruded, ...
Embodiment 3
[0058] According to the ratio, 6 parts of decabromodiphenylethane, 4 parts of bromotriazine, 2.5 parts of antimony trioxide, 0.1 part of antioxidant 1076, 0.2 part of antioxidant 168, and 0.2 part of modified polytetrafluoroethylene , 1 part of ethylene bisstearamide, 0.5 part of aluminum hypophosphite and 0.2 part of dicumyl chloride were mixed uniformly in a high-speed mixer at a speed of 800-1000 r / min for 5 minutes to obtain a uniform first mixing material;
[0059] Mix 84 parts of HIPS resin and 3 parts of styrene-butadiene-styrene block copolymer in a low mixing pot to obtain the second mixture;
[0060] The first mixed material and the second mixed material are passed through a separate weight loss weighing scale, and several types of twin-screw extruders are added at the same time. 200°C, 200°C, 200°C, 200°C, 210°C, head temperature 210°C, screw length-to-diameter ratio 36:1, screw speed control 400-450r / min, after the material is melted in the screw, it is extruded, ...
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