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Low-warpage high-temperature-resistant conductive liquid crystal polyester composite material and preparation method thereof

A technology of liquid crystal polyester and composite materials, applied in the field of low warpage and high temperature resistant conductive liquid crystal polyester composite materials and its preparation, and liquid crystal polyester composite materials, can solve problems such as research on the warpage performance of high temperature resistant conductive composite materials, and achieve Good dimensional stability, high modulus, and small warpage

Inactive Publication Date: 2018-06-12
SHANGHAI PRET CHEM NEW MATERIALS CO LTD +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

None of the above patents has done relevant research on the warpage performance of high temperature resistant conductive composite materials

Method used

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  • Low-warpage high-temperature-resistant conductive liquid crystal polyester composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 60 parts by weight of LCP, 15 parts by weight of carbon fiber (CT70P006-PUY, manufactured by Toho, number average fiber length: 6 mm, number average fiber diameter: 6 μm, the same below), 25 parts by weight of talcum powder (HM4, manufactured by Imifabi, 1250 mesh) was mixed in a tumbler, and then, the mixture was pelletized with a twin-screw extruder at a barrel temperature of 355° C. to obtain pellets composed of a liquid crystal polyester resin composition. The obtained pellets were injection molded by a NEX110T type injection molding machine (manufactured by Nissei Plastic Industrial Co., ltd) at a barrel temperature of 365°C and a mold temperature of 120°C. The results are listed in Table 2.

Embodiment 2

[0035] 60 parts by weight of LCP, 20 parts by weight of carbon fiber (CT70P006-PUY, manufactured by Toho, number average fiber length: 6mm, number average fiber diameter: 6 μm, the same below), 20 parts by weight of talcum powder (HM4, manufactured by Imifabi, 1250 mesh) was mixed in a tumbler, and then, the mixture was pelletized with a twin-screw extruder at a barrel temperature of 355° C. to obtain pellets composed of a liquid crystal polyester resin composition. The obtained pellets were injection molded by a NEX110T type injection molding machine (manufactured by Nissei Plastic Industrial Co., ltd) at a barrel temperature of 365°C and a mold temperature of 120°C. The results are listed in Table 2.

Embodiment 3

[0037] 55 parts by weight of LCP, 20 parts by weight of carbon fiber (CT70P006-PUY, manufactured by Toho, number average fiber length: 6 mm, number average fiber diameter: 6 μm, the same below), 25 parts by weight of talcum powder (HM4, manufactured by Imifabi, 1250 mesh) was mixed in a tumbler, and then, the mixture was pelletized with a twin-screw extruder at a barrel temperature of 355° C. to obtain pellets composed of a liquid crystal polyester resin composition. The obtained pellets were injection molded by a NEX110T type injection molding machine (manufactured by Nissei Plastic Industrial Co., ltd) at a barrel temperature of 365°C and a mold temperature of 120°C. The results are listed in Table 2.

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Abstract

The invention discloses a low-warpage high-temperature-resistant conductive liquid crystal polyester composite material and a preparation method thereof. The composite material is prepared from a high-temperature-resistant liquid crystal polyester resin, a carbon fiber and a lamellar inorganic mineral filler, wherein the high-temperature-resistant liquid crystal polymer resin (LCP) is 50 to 60 parts by weight (percent), the carbon fiber is 15 to 28 parts by weight (percent), the lamellar inorganic mineral filler is 18 to 28 parts by weight (percent), and the total filling volume of the carbonfiber and the lamellar inorganic mineral filler is 40 to 50 parts by weight (percent). The high-temperature-resistant conductive liquid crystal polyester composite material provided by the invention has the advantages of high temperature resistance, high wear resistance, high modulus, less warpage deformation, good size stability, conductivity, high rigidity and the like.

Description

technical field [0001] The invention belongs to polymer composite materials, and in particular relates to a low-warpage and high-temperature-resistant conductive liquid crystal polyester composite material and a preparation method thereof. More specifically, the liquid crystal polyester composite material involved in the present invention is prepared by mixing carbon fibers, lamellar inorganic minerals and high temperature resistant liquid crystal polyester. Background technique [0002] Carbon fiber has many excellent properties, such as high axial strength and modulus, low density, high specific performance, no creep, ultra-high temperature resistance in non-oxidizing environment, good fatigue resistance, specific heat and electrical conductivity between non-metal and Between metals, the thermal expansion coefficient is small and anisotropic, and the corrosion resistance is good. It has a wide range of uses, such as manufacturing rockets, spacecraft and other important ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/12C08K7/06C08K3/34
CPCC08K3/34C08K7/06C08K2201/003C08K2201/004C08L101/12C08L2201/08
Inventor 魏伟张鹰周文
Owner SHANGHAI PRET CHEM NEW MATERIALS CO LTD
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