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Insulating and heat-conducting polyamide composite material and preparation method thereof

A composite material, insulation and heat conduction technology, applied in the field of polyamide (PA) composite materials, can solve problems such as large filling amount and difficult processing, and achieve the effects of reducing water absorption, improving stacking degree and improving thermal conductivity

Active Publication Date: 2012-11-07
GUANGDONG SILVER AGE SCI & TECH CO 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 overcome the disadvantages of large filling amount and difficult processing of the existing heat-conducting materials, and use heat-conducting fillers of different shapes that are easily obtained in the market to form contact and interaction between the fillers when the amount of fillers is low, and the system A thermal network chain is formed inside, and the thermal conductivity is greatly improved

Method used

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  • Insulating and heat-conducting polyamide composite material and preparation method thereof
  • Insulating and heat-conducting polyamide composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The raw material formula of following parts by weight

[0045] Polyamide (PA66) 80 parts

[0046] Polyphenylene sulfide (PPS) 20 parts

[0047] Flake Al 2 o 3 40 copies

[0048] Whisker Al 2 o 3 20 copies

[0049] Nano-AlN 2 parts

[0050] 10 parts glass fiber

[0051] 1.5 parts of silane coupling agent

[0052] Antioxidant 0.5 part

[0053] Processing aid 1.0 parts

[0054] The glass fiber is pretreated with a silane coupling agent. Add flake and whisker Al in high speed mixer 2 o 3 , Nano-AlN, add silane coupling agent and then mix evenly at high speed, then add PA66, PPS, antioxidant, processing aid to mix evenly, add to twin-screw extruder, extrude and granulate at about 280°C, At the same time, pretreated glass fibers were added to obtain an insulating and heat-conducting polyamide composite material. The injection pressure was 10 MPa, the injection time was 30 seconds, and the mold temperature was ...

Embodiment 2

[0058] The raw material formula of following parts by weight

[0059] Polyamide (PA66) 70 parts

[0060]Polyphenylene sulfide (PPS) 30 parts

[0061] 40 parts of flake Al powder

[0062] Whisker Al 2 o 3 20 copies

[0063] Nano-AlN 2.5 parts

[0064] 15 parts glass fiber

[0065] Silane coupling agent 2.0 parts

[0066] Antioxidant 0.5 part

[0067] Processing aid 1.5 parts

[0068] The glass fiber is pretreated with a silane coupling agent. Add flake Al powder and whisker Al powder into the high-speed mixer 2 o 3 And nano-AlN, add silane coupling agent and mix evenly at high speed, then add PA66, PPS, antioxidant, processing aid to mix evenly, add to twin-screw extruder, extrude and granulate at about 280°C, At the same time, pretreated glass fibers were added to obtain an insulating and heat-conducting polyamide composite material. The injection pressure was 10 MPa, the injection time was 30 seconds, and the mold temperature was 100°C. ...

Embodiment 3

[0072] The raw material formula of following parts by weight

[0073] Polyamide (PA66) 60 parts

[0074] Polyphenylene sulfide (PPS) 40 parts

[0075] Flake Al 2 o 3 60 copies

[0076] Whisker MgO 10 parts

[0077] Nano-AlN 1.0 parts

[0078] 10 parts glass fiber

[0079] 1.5 parts of silane coupling agent

[0080] Antioxidant 0.5 part

[0081] Processing aid 1.0 parts

[0082] The glass fiber is pretreated with a silane coupling agent. Add flake Al in a high speed mixer 2 o 3 , whisker-like MgO, nano-AlN, add silane coupling agent and mix evenly at high speed, then add PA66, PPS, antioxidant, processing aid and mix evenly, then add it to the twin-screw extruder, at about 280 ° C Extrude and granulate, and add pretreated glass fibers at the same time to obtain an insulating and heat-conducting polyamide composite material. The injection pressure is 10 MPa, the injection time is 30 seconds, and the mold temperature is 100°C. Prepare sampl...

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Abstract

The invention relates to an insulating and heat-conducting polyamide composite material, which is prepared from the following components in part by weight: 60 to 90 parts of polyamide (PA) resin, 10 to 40 parts of polyphenylene sulfide (PPS) resin, 30 to 100 parts of lamellar heat-conducting filler, 10 to 80 parts of whisker-like heat-conducting filler, 1 to 10 parts of nanometer heat-conducing filler, 10 to 20 parts of glass fiber, 1 to 3 parts of coupling agent, 0.2 to 0.5 part of antioxidant and 0.5 to 2 parts of processing aid. The polyamide composite material prepared according to the formula has high heat-conducting property and thermalphysical and mechanical properties.

Description

technical field [0001] The invention relates to a polyamide (PA) composite material, in particular to an insulating and heat-conducting polyamide composite material for heat transfer and heat dissipation (high heat conduction / easy heat dissipation), which can be injection molded and a preparation method thereof. Background technique [0002] Polyamide (PA) is commonly known as nylon, PA has good mechanical properties, heat resistance, wear resistance, chemical resistance, flame retardancy and self-lubrication, easy processing, low friction coefficient, especially suitable for glass fiber and other Material filling enhancement modification, etc. Widely used in automobiles, electronic appliances, packaging, machinery, daily consumer goods and many other fields. However, PA, like other plastics, differs from metal mainly in its low thermal conductivity, which limits its ability to replace metal in some fields. With the development of industrial production and science and tech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/00C08L77/06C08L81/02C08K13/06C08K7/08C08K7/00C08K3/22C08K3/28C08K7/14C08K3/08C08K3/38C08K3/34
Inventor 汪洋傅轶谭颂斌
Owner GUANGDONG SILVER AGE SCI & TECH CO LTD
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