High heat conductivity and low shrinking rate type polyolefin composite material and preparation method thereof

A low-shrinkage, composite material technology, applied in the field of polymer materials, can solve the problems of ordinary polyolefin thermal conductivity and dimensional stability that cannot meet specific needs, achieve good dimensional stability, reduce linear expansion coefficient, and good thermal conductivity Effect

Inactive Publication Date: 2019-01-18
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 polyolefin composite material with high thermal conductivity and low shrinkage rate and its preparation method to solve the problem that the thermal conductivity and dimensional stability of ordinary polyolefins cannot meet specific requirements

Method used

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  • High heat conductivity and low shrinking rate type polyolefin composite material and preparation method thereof
  • High heat conductivity and low shrinking rate type polyolefin composite material and preparation method thereof
  • High heat conductivity and low shrinking rate type polyolefin composite material and preparation method thereof

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preparation example Construction

[0038] The preparation method of any one of the above-mentioned polyolefin composite materials with high thermal conductivity and low shrinkage rate comprises the following steps:

[0039] (1) Weigh 100-120 parts of polyolefin, 8-12 parts of thermally conductive low-shrinkage filler, 10-16 parts of inorganic filler, 0.1-0.5 part of antioxidant, mix and stir evenly to obtain a mixture;

[0040] (2) extruding and granulating the mixture obtained in step (1) to obtain a polyolefin composite material.

Embodiment 1

[0042] (1) Weigh 100 parts of PP, 8 parts of thermally conductive low-shrinkage filler, 10 parts of calcium carbonate, and 0.1 part of Irganox1010, mix and stir evenly to obtain a mixture;

[0043] (2) Extrude and granulate the mixture obtained in step (1) to obtain PP composite material P1.

[0044] Among them, the temperature and screw speed of each zone of the twin-screw extruder are respectively: the temperature of the first zone is 170°C, the temperature of the second zone is 230°C, the temperature of the third zone is 230°C, the temperature of the fourth zone is 230°C, the temperature of the fifth zone is 230°C, and the temperature of the sixth zone is 230°C. The zone temperature is 230°C, the head temperature is 230°C, and the screw speed is 220r / min.

Embodiment 2

[0054] (1) Weigh 120 parts of PE, 12 parts of thermally conductive low-shrinkage filler, 16 parts of talcum powder, 0.1 part of Irganox1010, 0.2 part of Irganox1330, 0.2 part of Irganox168 and mix them evenly to obtain a mixture;

[0055] (2) Extruding and granulating the mixture obtained in step (1) to obtain PE composite material P2.

[0056] Among them, the temperature and screw speed of each zone of the twin-screw extruder are respectively: the temperature of the first zone is 120°C, the temperature of the second zone is 180°C, the temperature of the third zone is 180°C, the temperature of the fourth zone is 180°C, the temperature of the fifth zone is 180°C, and the temperature of the sixth zone is 180°C. The zone temperature is 180°C, the head temperature is 180°C, and the screw speed is 300r / min.

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Abstract

The invention relates to a high heat conductivity and low shrinkage rate type polyolefin composite material and a preparation method thereof. The high heat conductivity and low shrinkage rate type polyolefin composite material comprises the following components in parts by weight: 100-120 parts of polyolefin, 8-12 parts of heat-conductive and low-shrinkage filler, 10-16 parts of inorganic filler,and 0.1-0.5 part of an antioxidant, wherein the heat-conductive and low-shrinkage filler is a ZrW2O7/Al material. According to the high heat conductivity and low shrinkage rate type polyolefin composite material, the ZrW2O7 material used as the heat-conductive and low-shrinkage filler is capable of effectively decreasing the linear expansion coefficient of the polyolefin material, and the shrinkage rate of the polyolefin material is also decreased; Al powder particles form interconnected complete net-shaped base bodies; moreover, ZrW2O7 particles are uniformly distributed among Al powder in anembedding manner; thus the heat conduction performance of the polyolefin composite material can be improved due to the structure.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polyolefin composite material with high thermal conductivity and low shrinkage rate and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, people have higher and higher requirements for materials in the fields of automobiles, home appliances, machinery, etc. Especially in some specific application fields, there are high requirements for polyolefin thermal conductivity and dimensional stability. Olefin composites cannot meet the requirements. [0003] In response to this situation, this technology creatively produced a polyolefin composite material, which has excellent thermal conductivity and dimensional stability, and has not been reported so far. This has very important practical significance for expanding the application of polyolefin composite materials . Contents of the invention [0004] The purpose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/06C08L67/02C08L25/06C08L77/02C08K13/02C08K3/22C08K3/08
Inventor 刘凯徐志海邓本波
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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