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High-strength LCP composite and preparation method thereof

A composite material and high-strength technology, applied in the field of high-strength LCP composite materials and their preparation, can solve the problems of low mechanical properties of liquid crystal polymers, easy generation of static electricity in electronic components, and high glass fiber consumption, and achieve antistatic and mechanical properties. Improve and avoid the effect of glass fiber exposure and high specific surface area

Inactive Publication Date: 2019-01-04
GUANGDONG GERUI NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when LCP is used as an electronic component, the electronic component is prone to static electricity during assembly and other processes, causing static damage
In order to suppress the phenomenon of electrostatic damage, adding conductive fillers to plastics is one of the common ways. For example, the invention patent with patent application number 201510557822.4 discloses a liquid crystal polymer with dual functions of antistatic and low warpage and its preparation method , it is modified by adding glass fiber and antistatic agent in LCP, but the mechanical properties of the liquid crystal polymer obtained are still low, and it is easy to cause the amount of glass fiber to be too high, which increases the difficulty of processing, and glass fiber is easy Exposure will further cause the surface resistivity to be too high and lose antistatic properties

Method used

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  • High-strength LCP composite and preparation method thereof
  • High-strength LCP composite and preparation method thereof
  • High-strength LCP composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A high-strength LCP composite material, comprising the following raw materials in parts by weight:

[0035]

[0036]

[0037] The average particle size of the carbon nanospheres is 80nm, and the BET specific surface area is 1000m 2 / g.

[0038] Wherein, the LCP is preferably a thermotropic liquid crystal polymer with a number average molecular weight of 8000.

[0039] Wherein, the diameter of the glass fiber is 16.7 μm, and the aspect ratio is 25:1.

[0040] Wherein, the carbon nanospheres are prepared by the following method:

[0041] A, take bamboo fiber powder, carry out pre-carbonization treatment in inert gas atmosphere, namely obtain carbon precursor;;

[0042] B. After the carbon precursor is cooled to room temperature, it is immersed in an aqueous solution of potassium hydroxide with a mass concentration of 10% for 1 hour, then the carbon precursor is taken out and freeze-dried, and then the freeze-dried carbon precursor is placed under an inert gas atmos...

Embodiment 2

[0053] A high-strength LCP composite material, comprising the following raw materials in parts by weight:

[0054]

[0055] The average particle size of the nano-carbon spheres is 90nm, and the BET specific surface area is 942.8m 2 / g.

[0056] Wherein, the LCP is preferably a thermotropic liquid crystal polymer with a number average molecular weight of 6000.

[0057] Wherein, the diameter of the glass fiber is 11 μm, and the aspect ratio is 30:1.

[0058] Wherein, the carbon nanospheres are prepared by the following method:

[0059] A, take bamboo fiber powder, carry out pre-carbonization treatment in inert gas atmosphere, namely obtain carbon precursor;;

[0060] B. After the carbon precursor is cooled to room temperature, it is immersed in an aqueous potassium hydroxide solution with a mass concentration of 8% for 1.5 hours, then the carbon precursor is taken out and freeze-dried, and then the freeze-dried carbon precursor is placed in an inert gas atmosphere Under a...

Embodiment 3

[0071] A high-strength LCP composite material, comprising the following raw materials in parts by weight:

[0072]

[0073] The average particle diameter of the carbon nanospheres is 87.4nm, and the BET specific surface area is 969.4m 2 / g.

[0074] Wherein, the LCP is preferably a thermotropic liquid crystal polymer with a number average molecular weight of 10,000.

[0075] Wherein, the diameter of the glass fiber is 23 μm, and the aspect ratio is 20:1.

[0076] Wherein, the carbon nanospheres are prepared by the following method:

[0077] A, take bamboo fiber powder, carry out pre-carbonization treatment in inert gas atmosphere, namely obtain carbon precursor;;

[0078] B. After the carbon precursor is cooled to room temperature, it is immersed in an aqueous potassium hydroxide solution with a mass concentration of 12% for 1.5 hours, then the carbon precursor is taken out and freeze-dried, and then the freeze-dried carbon precursor is placed in an inert gas atmosphere ...

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Abstract

The invention relates to the technical field of LCP, in particular to a high-strength LCP composite and a preparation method thereof. The LCP composite includes LCP, glass fibers, nanometer carbon spheres, talc powder, a light stabilizer, a thermal stabilizer and an antioxidant. The average particle size of the nanometer carbon spheres is 80-100 nm, and the BET specific surface areais 900-1000 m2 / g. The nanometer carbon spheres and the micrometer glass fibers are blended for modifying the LCP, the micro and nano structures reinforce each other, so that the LCP composite has better mechanical properties and anti-static functions, the content of the glass fibers can be effectively reduced, and the melting fluidity of the LCP improved by adding talcum powder, so that the LCP, the nanometer carbon spheres and the glass fibers can be blended evenly.

Description

technical field [0001] The invention relates to the technical field of LCP, in particular to a high-strength LCP composite material and a preparation method thereof. Background technique [0002] Liquid crystal polyester resin (LCP) can be widely used in daily necessities, electronics, electricity, automobiles, aerospace and other fields due to its excellent electrical insulation, heat resistance, dimensional stability and fluidity during melting. Raw materials for supplies, printed circuit boards, food packaging, satellite electronic components, electrical and electronic and automotive components, and even as exterior panel materials for spacecraft. [0003] However, when LCP is used as an electronic component, the electronic component is prone to static electricity during assembly and other processes, resulting in electrostatic damage. In order to suppress the phenomenon of electrostatic damage, adding conductive fillers to plastics is one of the common ways. For example,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/12C08L67/02C08K13/04C08K7/14C08K7/18C08K3/34
CPCC08K2201/003C08K2201/011C08K2201/014C08K2201/016C08L101/12C08L2201/04C08L67/02C08K13/04C08K7/14C08K7/18C08K3/34
Inventor 郑宇航
Owner GUANGDONG GERUI NEW MATERIALS CO LTD
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