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Glass-fiber-reinforced heat conducting plastic and preparation method thereof

A technology of heat-conducting plastics and heat-conducting fillers, which is applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve problems such as decline and unimproved mechanical properties of materials, and achieve high efficiency, good mechanical properties, and stable product quality.

Inactive Publication Date: 2013-04-17
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the filling of high-filling thermally conductive fillers makes the material have high thermal conductivity, the mechanical properties of the material have not been improved, and some aspects have even declined. Therefore, many manufacturers also add a small amount of glass fiber to strengthen the thermally conductive plastic while adding thermally conductive fillers.
The Chinese invention patent with the publication number CN101225231 describes a kind of insulating and heat-conducting glass fiber reinforced PPS composite material and its preparation method. The method uses chopped glass fiber, and the chopped fiber is cut shorter through the extrusion process, which improves the strength of the material. Mechanical properties don't help much

Method used

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  • Glass-fiber-reinforced heat conducting plastic and preparation method thereof
  • Glass-fiber-reinforced heat conducting plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0036] First prepare the continuous long glass fiber reinforced PA6 resin masterbatch, which is made of the following components by weight: 38.4 parts of PA6, 60 parts of continuous long glass fiber, 0.2 part of antioxidant 1098, 0.4 part of antioxidant 168, lubricated Agent GM-100 1 part. The preparation method is as follows:

[0037] Add PA6 resin, antioxidant 1098, antioxidant 168, and lubricant GM-100 into a high-mixer and mix evenly, then knead and melt through an extruder to obtain a PA6 resin melt and introduce it into a melt tank. The fiber is introduced into the melt tank, impregnated and dispersed by PA6 resin melt in the melt tank, so that the continuous long glass fiber is completely infiltrated, and then passed through the cooling and pelletizing device, and cut into pellets of corresponding length according to requirements to obtain a length of 12mm. Continuous long glass fiber reinforced PA6 resin masterbatch; wherein, the temperature of the extruder is 180-260...

Embodiment 4-6

[0047] First prepare the continuous long glass fiber reinforced PP resin masterbatch, which is made of the following components by weight: 38 parts of PP, 60 parts of continuous long glass fiber, 0.2 part of antioxidant 1010, 0.4 part of antioxidant 168, lubricated Agent EBS 1.4 parts. The preparation method is as follows:

[0048]Add PP resin, antioxidant 1010, antioxidant 168, and lubricant EBS into the high mixer and mix evenly, then knead and melt through the extruder to obtain the PP resin melt and introduce it into the melt tank, and import the continuous long glass fiber into the The melt tank is impregnated and dispersed by PP resin melt in the melt tank, so that the continuous long glass fiber is completely soaked, and then passed through the cooling and pelletizing device, cut into pellets of corresponding length according to requirements, and the continuous long glass fiber with a length of 12mm is obtained. Glass fiber reinforced PP resin masterbatch; wherein, the...

Embodiment 7

[0059] A method for preparing a glass fiber reinforced thermally conductive plastic, comprising the following steps:

[0060] (1) Preparation of glass fiber reinforced resin masterbatch: add 38 parts by weight of PA resin, 0.6 parts by weight of hindered amine antioxidant, and 1.5 parts by weight of polyethylene wax into a high-mixer and mix evenly, and then knead through an extruder After melting, it is introduced into the melt tank, and 60 parts by weight of continuous long glass fibers are also introduced into the melt tank, dipped and dispersed in the melt tank, and then passed through a cooling and pelletizing device to obtain a 10mm glass fiber reinforced resin masterbatch; wherein, extruding Exit temperature is 180-260°C, melt tank temperature is 220-260°C;

[0061] (2) Preparation of thermally conductive filler masterbatch: dry PA resin, 25 parts by weight of alumina, 25 parts by weight of silicon carbide, and 18 parts by weight of thermally conductive graphite at 90°C...

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Abstract

The invention discloses a glass-fiber-reinforced heat conducting plastic which is prepared the following components in parts by weight: 8-25 parts of glass-fiber-reinforced resin master batch and 75-92 parts of heat conducting filling master batch. The glass-fiber-reinforced resin master batch is prepared the following components in parts by weight: 38-48 parts of first resin, 0.6-0.8 part of first antioxidant, 1-1.5 parts of first lubricant and 50-60 parts of glass fiber. The heat conducting filling master batch is prepared the following components in parts by weight: 22-30 parts of second resin, 68-76 parts of heat conducting filler, 0.2-0.3 part of second antioxidant, 0.6-1.0 part of second lubricant, 0.5-0.7 part of coupling agent and 0.6-0.7 parts of other processing assistants. The invention can well control the contents of the heat conducting filler and glass fiber. The preparation technique is simple and efficient; and the product has the advantages of stable quality and better mechanical properties.

Description

technical field [0001] The invention relates to the technical field of highly filled thermally conductive plastics, in particular to a continuous long glass fiber reinforced thermally conductive plastic and a preparation method thereof. Background technique [0002] Thermally conductive plastics are plastics that have a certain ability to conduct heat. The thermal conductivity of most polymer materials is very small, and they are often used as thermal insulation materials. There are two ways to improve the thermal conductivity of plastics. One is to synthesize structural plastics with thermal conductivity, such as polyaniline, polyacetylene, polypyrrole, etc., and the other is to use thermal conductive fillers to fill the resin matrix. Due to the thermal conductivity obtained by the second method Plastics are cheap and easy to process and shape, so the research on thermally conductive plastics is concentrated on filled thermally conductive plastics. For filled thermally co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L23/12C09K5/14C08K13/04C08K7/14C08K13/06C08K9/06C08K9/04C08K3/22C08K3/28C08K3/34C08K3/04C08J3/22
Inventor 郭雪晴
Owner HEFEI GENIUS NEW MATERIALS