A flame-retardant heat-conducting recycled PS composite material and its preparation method

A composite material and flame retardant technology, which is applied in the field of flame retardant and thermally conductive recycled PS composite materials and their preparation, can solve the problems of poor flame retardancy, low toughness of recycled PS materials, and general thermal conductivity, and achieves excellent thermal conductivity and large promotion. Meaningful, low-cost effects

Active Publication Date: 2019-12-31
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a flame-retardant and heat-conducting recycled PS composite material and its preparation method to solve the problems of low toughness, poor flame retardancy and general thermal conductivity of recycled PS materials.

Method used

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  • A flame-retardant heat-conducting recycled PS composite material and its preparation method
  • A flame-retardant heat-conducting recycled PS composite material and its preparation method
  • A flame-retardant heat-conducting recycled PS composite material and its preparation method

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preparation example Construction

[0032] The preparation method of any one of the above flame-retardant and heat-conducting recycled PS composite materials comprises the following steps:

[0033] (1) Weigh 80-100 parts of recycled PS, 20-30 parts of recycled PC, 12-16 parts of flame retardant, 3-5 parts of calcium silicate whiskers, 8-12 parts of Bi 2 o 3 , 0.1-0.5 parts of antioxidant, 0.1-0.3 parts of SEBS-g-MAH are mixed and stirred evenly to obtain a mixture;

[0034] (2) Extruding and granulating the mixture obtained in step (1) through a twin-screw extruder to obtain a PS composite material.

[0035] The step (2) is specifically: put the mixture obtained in the step (1) into the hopper of the twin-screw extruder and extrude and granulate to obtain the PS composite material, wherein the twin-screw extruder includes sequentially arranged There are six temperature zones, the first zone temperature is 160-180°C, the second zone temperature is 210-250°C, the third zone temperature is 210-250°C, the fourth z...

Embodiment 1

[0037] (1) Weigh 80 parts of recovered PS, 20 parts of recovered PC, 9 parts of octabromobisphenol S ether, 3 parts of anhydrous magnesium carbonate, 3 parts of calcium silicate whiskers, and 8 parts of Bi 2 o 3 , 0.1 part of Irganox168, and 0.1 part of SEBS-g-MAH were mixed and stirred evenly to obtain a mixture;

[0038] (2) Extruding and granulating the mixture obtained in the step (1) to obtain the recycled PS composite material P1.

[0039] Among them, the temperature and screw speed of each zone of the twin-screw extruder are respectively: the temperature of the first zone is 160°C, the temperature of the second zone is 210°C, the temperature of the third zone is 210°C, the temperature of the fourth zone is 210°C, the temperature of the fifth zone is 210°C, the temperature of the sixth zone is 210°C, The head temperature is 210°C, and the screw speed is 200r / min.

Embodiment 2

[0041] (1) Weigh 100 parts of recovered PS, 30 parts of recovered PC, 12 parts of octabromobisphenol S ether, 4 parts of anhydrous magnesium carbonate, 5 parts of calcium silicate whiskers, 12 parts of Bi 2 o 3 , 0.1 part of Irganox168, 0.2 part of Irganox1010, 0.2 part of Irganox1330, 0.3 part of SEBS-g-MAH were mixed and stirred evenly to obtain a mixture;

[0042] (2) Extruding and granulating the mixture obtained in the step (1) to obtain the recycled PS composite material P2.

[0043] Among them, the temperature and screw speed of each zone of the twin-screw extruder are respectively: the temperature of the first zone is 180°C, the temperature of the second zone is 250°C, the temperature of the third zone is 250°C, the temperature of the fourth zone is 250°C, the temperature of the fifth zone is 250°C, and the temperature of the sixth zone is 250°C. The head temperature is 250°C, and the screw speed is 280r / min.

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Abstract

The invention relates to a flame-retardant heat-conduction recycled PS (polystyrene) composite material and a preparation method thereof. The preparation method includes weighing 80-100 parts of recycled PS, 20-30 parts of recycled PC (polycarbonate), 12-16 parts of flame retardants, 3-5 parts of calcium silicate whiskers, 8-12 parts of Bi2O3, 0.1-0.5 part of antioxidants, 0.1-0.3 part of-g-MAH SEBS and mixing with stirring uniformly to obtain a mixture; extruding the mixture to granulate through a double-screw extruder to obtain the PS composite material. Since tetrabromobisphenol S bis-(2,3-dibromopropyl ether) and anhydrous magnesium carbonate are compounded as the main flame retardant creatively and calcium silicate whiskers serve as an auxiliary flame retardant, flame retardance of the PS composite material is improved; calcium silicate whiskers, serving as the auxiliary flame retardant, have classical porous structures and can be expanded into carbon under catalysis, and thus, the flame redardance of the PS composite material is improved further.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a flame-retardant heat-conducting recycled PS composite material and a preparation method thereof. Background technique [0002] Recycled polystyrene (PS) is a common polyolefin regrind, which can be widely used in automobiles, home appliances, machinery and other fields. However, it also has disadvantages such as low toughness, poor flame retardancy, and general thermal conductivity, which greatly limit the application of recycled PS. [0003] In view of this reason, this technical solution innovatively synthesizes a flame-retardant and heat-conducting recycled PS composite material, which is also excellent in impact toughness, which expands the application range of recycled PS composite materials, which is of great significance. Contents of the invention [0004] The purpose of the present invention is to provide a flame-retardant and heat-conducting recycled PS co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/06C08L69/00C08L51/06C08K13/04C08K5/41C08K3/26C08K7/10C08K7/26C08K3/22
CPCC08K2003/267C08L25/06C08L2201/02C08L2205/03C08L2207/20C08L69/00C08L51/06C08K13/04C08K5/41C08K3/26C08K7/10C08K7/26C08K3/22
Inventor 刘凯黄家奇王添琪
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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