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Modified liquid crystal polyester resin composition, preparation method thereof and application of composition

A technology of resin compound and liquid crystal polyester, which is applied in the field of modified liquid crystal polyester resin compound and its preparation, can solve the problems of insufficient dielectric constant and poor mechanical strength, etc., and achieve the effect of simple production raw materials

Inactive Publication Date: 2017-05-10
JIANGSU WATER SPECIAL MATERIAL MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a modified liquid crystal polyester resin compound and a preparation method thereof to solve the problems of insufficient dielectric constant and poor mechanical strength in the existing fully aromatic liquid crystal polyester resin compound

Method used

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Examples

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preparation example Construction

[0041] In the preparation process of the above-mentioned wholly aromatic liquid crystal polyester resin, a solution polycondensation method or a bulk polycondensation method may be used. In order to promote the polycondensation reaction, an acylating agent can be used to pretreat the raw materials during the synthesis of the wholly aromatic liquid crystal polyester prepolymer, especially an acetylating agent can be used for pretreatment.

[0042] In the above-mentioned solid-state polycondensation reaction (solid-state polycondensation reaction), it is necessary to provide appropriate heat to the wholly aromatic liquid crystal polyester prepolymer. The specific heat supply can be through methods such as heating plates, hot air, and high-temperature fluids, and in order to remove solid-state polycondensation reactions. By-products can be removed with an inert gas purge or vacuum.

[0043] In any embodiment, the filler is at least one of glass fiber, whisker and carbon fiber. T...

Embodiment 1

[0060] A modified liquid crystal polyester resin compound, comprising the following components in parts by weight:

[0061] PTFE 10 parts;

[0062] 60 parts of all aromatic liquid crystal polyester resins;

[0063] 30 parts of glass fiber.

[0064] The preparation method of the modified liquid crystal polyester resin compound provided in Example 1 is as follows:

[0065] Step S01, put 10 parts of PTFE, 60 parts of wholly aromatic liquid crystal polyester resin (produced by Jiangsu Water Special Materials Co., Ltd.), and 30 parts of glass fiber in an environment of 130° C., and dry for 4 hours;

[0066] Step S02, putting the dried PTFE, glass fiber and wholly aromatic liquid crystal polyester resin into an automatic mixer and mixing evenly to obtain a mixed material;

[0067] Step S03, putting the mixture obtained in step S02 into a twin-screw extruder for melting and kneading, and then extruding, drawing, cooling, and granulating to obtain a modified liquid crystal polyeste...

Embodiment 2

[0069] A modified liquid crystal polyester resin compound, comprising the following components in parts by weight:

[0070] 15 parts of PTFE;

[0071] 55 parts of all aromatic liquid crystal polyester resins;

[0072] 30 parts of glass fiber.

[0073] The preparation method of the modified liquid crystal polyester resin compound provided in embodiment 2 is as follows:

[0074] Step S01, put 15 parts of PTFE, 55 parts of wholly aromatic liquid crystal polyester resin (produced by Jiangsu Water Special Materials Co., Ltd.), and 30 parts of glass fiber in an environment of 130° C., and dry for 4 hours;

[0075] Step S02, putting the dried PTFE, glass fiber and wholly aromatic liquid crystal polyester resin into an automatic mixer and mixing evenly to obtain a mixed material;

[0076] Step S03, putting the mixture obtained in step S02 into a twin-screw extruder for melting and kneading, and then extruding, drawing, cooling, and granulating to obtain a modified liquid crystal po...

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Abstract

The invention belongs to the technical field of composite polymer materials, and particularly discloses a modified liquid crystal polyester resin composition, a preparation method thereof and an application of the composition. The modified liquid crystal polyester resin composition comprises, by weight, 50-80 parts of liquid crystal polyester resin, 10-30 parts of additives and 20-40 parts of fillers. The additives are polytetrafluoroethylene. The modified liquid crystal polyester resin composition is small in dielectric constant and applicable to the field of high-frequency electronic devices and has good mechanical strength.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to a modified liquid crystal polyester resin composite and its preparation method and application. Background technique [0002] In recent years, with the rapid development of the electronic information industry, the development trend of high-frequency electronic equipment has become more and more obvious, especially the rapid development of electronic products, communication products, and satellite transmission. High-frequency electronic components require materials with higher performance. [0003] Therefore, higher requirements are placed on the performance of wholly aromatic liquid crystal polyester resin (LCP) as a raw material for electronic components. [0004] The high-frequency resistance of the material is determined by the dielectric properties. The dielectric constant (Dk) must be small and stable. The signal transmission rate is inversely proportion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L27/18C08K7/14
CPCC08L67/00C08L2203/20C08L27/18C08K7/14
Inventor 金东植周小宇高海燕杨云飞
Owner JIANGSU WATER SPECIAL MATERIAL MFG CO LTD
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