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Flame-retardant PC/HIPS composite material and preparation method thereof

A composite material and flame retardant technology, which is applied in the field of flame retardant PC/HIPS composite material and its preparation, can solve the problems of difficult molding and processing, high melt viscosity, poor solvent resistance, etc., and achieve low cost and excellent physical and mechanical properties , cost reduction effect

Inactive Publication Date: 2010-07-28
ANHUI KEJU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that in view of the high melt viscosity, difficult molding process, stress crack resistance and poor solvent resistance of polycarbonate in the prior art, HIPS resin and its products are very flammable, and when burned A large amount of black smoke is released, which has potential fire hazards and must be treated with flame retardancy. Provide a flame-retardant PC / HIPS composite material with outstanding toughness and excellent flame retardancy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1, flame-retardant PC / HIPS composite material, is made of the raw material of following parts by weight: polycarbonate 77 parts, polystyrene 5 parts, brominated epoxy resin 9 parts, Sb 2 o 3 3 parts, tetrakis-(4-hydroxy-3,5-tert-butylphenylpropionic acid) pentaerythritol ester (1010) 0.2 parts, phosphite tris(2,4-di-tert-butylphenyl) ester (168) 0.2 parts 4 parts, MBS core-shell impact modifier (methyl methacrylate-butadiene-styrene) 4 parts, high-impact polystyrene grafted glycidyl methacrylate 1 part, lubricant EBS ( Ethylene bis stearic acid amide) 0.6 part.

[0038] The preparation method of flame-retardant PC / HIPS composite material comprises steps:

[0039] a: Dry polycarbonate and polystyrene at 100°C and 70°C for 8 hours respectively;

[0040] b: Preparation of compatibilizer -- high-impact polystyrene grafted with glycidyl methacrylate; the steps are: carry out in a Brabender internal mixer, first add HIPS (high-impact polystyrene) to preheat In ...

Embodiment 2

[0044] Embodiment 2, flame-retardant PC / HIPS composite material, is made of the raw material of following parts by weight: polycarbonate 75 parts, polystyrene 5 parts, brominated epoxy resin 9 parts, Sb 2 o 3 3 parts, tetrakis-(4-hydroxy-3,5-tert-butylphenylpropionic acid) pentaerythritol ester (1010) 0.2 parts, phosphite tris(2,4-di-tert-butylphenyl) ester (168) 0.2 parts 4 parts, MBS core-shell type impact modifier 4 parts, high impact polystyrene grafted glycidyl methacrylate 3 parts, lubricant EBS (ethylene bis stearic acid amide) 0.6 parts.

[0045] The preparation method is the same as in Example 1, and will not be repeated here.

Embodiment 3

[0046] Embodiment 3, flame-retardant PC / HIPS composite material, is made of the raw material of following parts by weight: polycarbonate 70 parts, polystyrene 10 parts, brominated epoxy resin 9 parts, Sb 2 o 33 parts, 0.2 parts of tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol, 0.2 parts of tris(2,4-di-tert-butylphenyl) phosphite, MBS Core-shell type impact modifier 4 parts, high impact polystyrene grafted glycidyl methacrylate 3 parts, lubricant EBS (ethylene bis stearic acid amide) 0.6 parts

[0047] The preparation is the same as that in Example 1, and will not be repeated here.

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Abstract

The invention discloses a flame-retardant PC / HIPS composite material and a preparation method thereof. The composite material is prepared by the following raw materials: polycarbonate, polystyrene, flame retardant, flame-retardant synergist, flexibilizer, compatilizer, antioxidant and other adjuvants; and the preparation method comprises the following steps of: a. forced air drying the polycarbonate and the polystyrene respectively at 100-130 DEG C and 70-90 DEG C for 4-8 hours; b. preparing high impact polystyrene grafting glycidyl methacrylate compatilizer; c. weighing the dried polycarbonate, the polystyrene, the flame retardant, the flame-retardant synergist, the flexibilizer, the compatilizer, the antioxidant and other adjuvants; d. putting the raw materials in the step c into a high-speed mixer for dry mixing for 3-5min;and e. putting the mixed raw materials into a twin-screw extruder for melt extruding and pelleting. The composite material has prominent toughness and excellent flame retardance; in addition, the preparation method is simple, the operation is convenient and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a flame-retardant PC / HIPS composite material and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is a polymer with a large number of benzene ring structures in its molecular chain. The molecular chain is relatively rigid, not easy to crystallize and has a high glass transition temperature. The molecular chain structure determines that it has outstanding impact resistance, good creep resistance and dimensional stability, heat resistance, low water absorption, non-toxic, excellent dielectric properties, high gloss, and self-extinguishing. One of the five general-purpose engineering plastics, it is widely used in automobiles, electrical and electronic, construction, office equipment, packaging, sports equipment, medical care and other fields. Its output and consumption are second only to nylon engineering plastics, ranking second. However, po...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L25/06C08K3/24C08K3/38C08K3/22C08K5/521C08F257/02B29B9/00B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29C48/04B29C48/40
Inventor 付天英
Owner ANHUI KEJU NEW MATERIALS
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