Highly heat conductive polyphenylene sulfide composite material and method for making same

A technology of polyphenylene sulfide and composite materials, which is applied in the field of polymer materials, can solve the problems of no composite materials, achieve high thermal conductivity, excellent physical and mechanical properties, and simple preparation process

Inactive Publication Date: 2008-01-30
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the thermally conductive plastics obtained by this method are ordinary plastics, such as PP, PE,

Method used

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] A preparation method of a high thermal conductivity polyphenylene sulfide composite material, comprising the steps of:

[0023] a: Add 0.5-2.5% of the coupling agent by mass to the heat-conducting agent weighed according to the mass ratio for surface treatment, the treatment temperature is 30-70°C, and the treatment time is 5-15 minutes;

[0024] b: Weigh the polyphenylene sulfide resin according to the weight ratio, and put it into the high-speed mixer together with the treated heat-conducting agent and other additives for 3-5 minutes;

[0025] c: Put the mixed raw materials in b into the feeding hopper of the twin-screw extruder, the glass fiber is added from the glass fiber port, melted and extruded, and granulated; the processing technology is as follows: the temperature in the first zone of the twin-screw extruder is 265- 290°C, the temperature of the second zone is 265-300°C, the temperature of the third zone is 265-300°C, the temperature of the fourth zone is 265...

Embodiment 1

[0027] Firstly, 100 parts of copper powder of heat conduction agent were treated with 2 parts of coupling agent, and then 100 parts of PPS, 50 parts of glass fiber and 0.5 parts of other additives were weighed. The mixed material is put into the hopper of the twin-screw extruder, melted and blended, extruded and granulated to form a composite material. Among them, the temperature settings of each heating zone of the screw are: zone 1 temperature: 270°C; zone 2: 285°C; zone 3: 285°C; zone 4: 290°C; head: 285°C; residence time 2-3min. The pressure is 15MPa.

Embodiment 2

[0029] Firstly, 100 parts of thermal conductive graphite are treated with 2 parts of coupling agent, and then 100 parts of PPS, 50 parts of glass fiber, and 0.5 parts of other additives are weighed. The mixed material is put into the hopper of the twin-screw extruder, melted and blended, extruded and granulated to form a composite material. Among them, the temperature settings of each heating zone of the screw are: zone 1 temperature: 270°C; zone 2: 285°C; zone 3: 285°C; zone 4: 290°C; head: 285°C; residence time 2-3min. The pressure is 15MPa.

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Abstract

The invention discloses a highly heat-conductive polyphenylene sulfide (PPS) compound material and a preparation method thereof. The components by mass compounding ratio are 100 for polyphenylene sulfide, 50 to 150 for conduction agent, 30 to 100 for glass fiber, 0.5 to 5 for coupling agent, and 0 to 5 for other assistant. The producing method of the compound material involves the technique steps that: the first step is to mix the raw materials according to the proportion, and then the mixture is feed into a plastic twin-screw extrusion machine together with glass fiber added from a fiberglass door under the controlled temperature of 260 DEG C to 300 DEG C before the mixture is ready to be granulated to produce highly heat-conductive polyphenylene sulfide compound material. The materials of the invention have the advantages of good physical mechanical properties and highly heat coefficient.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high thermal conductivity polyphenylene sulfide composite material and a preparation method thereof. Background technique [0002] Polyphenylene sulfide (PPS) is a thermoplastic special engineering plastic with excellent comprehensive properties. Its outstanding features are high temperature resistance, corrosion resistance, radiation resistance, non-combustibility, excellent mechanical properties and electrical properties. Mainly used in automobile manufacturing, electronic appliances, machinery industry, chemical instrumentation and aerospace industry, etc. But PPS is the same as other plastics, the main difference from metal is its low thermal conductivity, which limits its ability to replace metal in some fields. With the development of industrial production and science and technology, some fields that require high thermal conductivity of materials, such as heat ...

Claims

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Application Information

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IPC IPC(8): C08L81/02C08K7/14C08K9/04B29C47/40B29C47/92C08K3/00B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/9185B29C2948/92514B29C2948/92561B29C2948/92895B29C2948/92904
Inventor 徐东贺永李红敏
Owner SHENZHEN KEJU NEW MATERIAL
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