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Flame-proof polystyrene composition and its preparation method

A technology of polystyrene and polystyrene resin, which is applied in the field of flame-retardant polystyrene composition and its preparation, and can solve the problems of large addition of flame retardant, low flame-retardant grade of flame-retardant materials, and low flame-retardant efficiency , to achieve high flame retardant efficiency, good flame retardant effect, and less loss

Inactive Publication Date: 2008-03-05
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing halogenated flame-retardant polystyrene technology has the following problems: a large amount of flame retardant is added, and the flame-retardant grade of the flame-retardant material is low, and the flame-retardant efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7

[0028] High-impact polystyrene resin, halogenated flame retardant (a mixture of decabromodiphenylethane and heat-stable hexabromocyclododecane or brominated polystyrene), antimony trioxide and composite antioxidant (The mixture of antioxidant 1010 and antioxidant 168) is mixed at high speed in a high-speed mixer to make the materials fully mixed. Put the mixed material into the twin-screw extruder, the screw rotation speed is 300r / min, and the temperature of the first to seventh zones on the extruder is 175°C, 185°C, 185°C, 185°C, 180°C, 180°C, 165°C (machine Head) under the conditions of melt extrusion, granulation.

[0029] The obtained pellets were put into an oven and dried at 80° C. for 8 hours, and then injection molded into standard splines with an injection molding machine. The injection molding temperature was set at 195°C. The standard splines were tested for various mechanical properties, and the results are shown in Table 1. The amount of the raw materials is ba...

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Abstract

The invention provides a fire-retardant polystyrene combination and its preparation method. involving flame-retardant resin modification field. The said combination contains (weight parts) polystyrene 100, halogen flame-retardant 8~25, and synergistic flame retardant 2~6. The halogen flame retardant is brominated polystyrene or a mixture of decabrominated dipheny ethane and hexabromocyclododecane with thermal decomposition temperature greater than or equal to 200degreeC, wherein the ratio of decabrominated dipheny ethane to hexabromocyclododecane is at 2 : 1 ~ 1 : 2. The synergistic flame retardant is antimony trioxide. The combination is prepared by mixing and melting the above materials with good fire-retardant properties, flame retardant level up to FV-0 level (GB / T4609-93) and the oxygen index up to 28, which can be applied to various adverse circumstances.

Description

Technical field: [0001] The invention relates to a flame-retardant polystyrene composition, and furthermore, relates to a flame-retardant polystyrene composition modified with a halogen flame retardant and a preparation method thereof. Background technique: [0002] At present, most of the halogenated flame retardants of polystyrene are mainly brominated flame retardants. Considering the increasing requirements for flame retardant efficiency and environmental indicators of flame retardants, flame retardants used for polystyrene at home and abroad mainly include decabromodiphenyl ether, decabromodiphenylethane, tetrabromobisphenol A, etc. The flame retardant system is composed of antimony synergistic flame retardants. For example, Mr. Quan Ying from the Institute of Polymer Science of Tsinghua University and Mr. Yang Mingshan from the Institute of Physics and Chemistry of the Chinese Academy of Sciences developed low-smoke, flame-retardant, high-impact polystyrene by adding ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/06C08K5/524C08K3/22C08K5/03C08K5/36
Inventor 焦清介臧充光杨化浩吴中伟刘帅
Owner BEIJING INSTITUTE OF TECHNOLOGYGY