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Low-density liquid crystal polymer and preparation method thereof

A liquid crystal polymer, low-density technology, applied in the direction of liquid crystal materials, chemical instruments and methods, etc., can solve the problems of limited application, high density of liquid crystal polymers, etc., and achieve the effect of density reduction and good thermal performance

Inactive Publication Date: 2020-05-01
江苏沃特特种材料制造有限公司
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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 provide a low-density liquid crystal polymer and its preparation method, aiming to solve the problem that the liquid crystal polymer density is relatively high in the prior art, which limits its application in the field of lightweight materials

Method used

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  • Low-density liquid crystal polymer and preparation method thereof
  • Low-density liquid crystal polymer and preparation method thereof
  • Low-density liquid crystal polymer and preparation method thereof

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preparation example Construction

[0047] Correspondingly, the embodiment of the present invention also provides a method for preparing a low-density liquid crystal polymer. The method comprises the steps of:

[0048] S01. Weigh each component according to the low-density liquid crystal polymer;

[0049] S02. Drying the wholly aromatic liquid crystal polyester resin, the hollow glass microspheres, the compatibilizer and the filler;

[0050] S03. Mixing the dried wholly aromatic liquid crystal polyester resin, the hollow glass microspheres, the compatibilizer, and the filler to obtain a first mixture;

[0051] S04. Melt and knead the first mixture, then extrude, draw, cool, and granulate to obtain the low-density liquid crystal polymer.

[0052] The preparation method of the low-density liquid crystal polymer provided by the present invention is to dry and mix the wholly aromatic liquid crystal polyester resin, the hollow glass microspheres, the compatibilizer and the filler, and then The mixture is melted an...

Embodiment 1

[0067] A low-density liquid crystal polymer

[0068] The low-density liquid crystal polymer includes such as 73 parts of wholly aromatic liquid crystal polyester resin; 25 parts of hollow glass microspheres; 1 part of compatibilizer; 1 part of filler; wherein, the diameter of the hollow glass microspheres is 20 μm, model For 3M iM16K.

[0069] The preparation method of the low-density liquid crystal polymer, the preparation method includes the following steps: weighing each component according to the low-density liquid crystal polymer; The beads, the compatibilizer and the filler were dried at 120°C for 6 hours; the dried fully aromatic liquid crystal polyester resin, the hollow glass microspheres, the compatibilizer and the The filler is put into an automatic mixer and mixed evenly to obtain the first mixture; the first mixture is put into a twin-screw extruder for melting and kneading, and then extruded, drawn, cooled, and granulated to produce the low-density liquid crysta...

Embodiment 2

[0071] A low-density liquid crystal polymer

[0072] The low-density liquid crystal polymer includes such as 83 parts of wholly aromatic liquid crystal polyester resin; 15 parts of hollow glass microspheres; 1 part of compatibilizer; 1 part of filler; wherein, the diameter of the hollow glass microspheres is 20 μm, model For 3M iM16K.

[0073] The preparation method of the low-density liquid crystal polymer, the preparation method includes the following steps: weighing each component according to the low-density liquid crystal polymer; The beads, the compatibilizer and the filler were dried at 120°C for 6 hours; the dried fully aromatic liquid crystal polyester resin, the hollow glass microspheres, the compatibilizer and the The filler is put into an automatic mixer and mixed evenly to obtain the first mixture; the first mixture is put into a twin-screw extruder for melting and kneading, and then extruded, drawn, cooled, and granulated to produce the low-density liquid crysta...

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Abstract

The invention provides a low-density liquid crystal polymer. The low-density liquid crystal polymer comprises the following components in parts by weight: 60-90 parts of wholly aromatic liquid crystalpolyester resin, 10 to 30 parts of hollow glass beads, 1 to 3 parts of a compatilizer and 1 to 30 parts of a filling material, wherein the diameter of the hollow glass beads is 10-50 [mu]m. The low-density liquid crystal polymer provided by the invention has the following advantages: the wholly aromatic liquid crystal polyester resin is used as a parent material; the synergistic effect of the hollow glass beads with a diameter of 10-50 [mu] and the compatilizer is utilized to modify the wholly aromatic liquid crystal polyester resin, so the overall density of the prepared liquid crystal polymer is reduced, and the density of the prepared liquid crystal polymer is greatly reduced; meanwhile, the liquid crystal polymer has good thermal performance and can be widely applied to the fields ofelectronics and electrics, aerospace materials and the like.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a low-density liquid crystal polymer and a preparation method thereof. Background technique [0002] Liquid crystal polymer (LCP) is an intermediate state polymer between solid crystal and liquid. Although its molecular arrangement is not as three-dimensionally ordered as solid crystal, it is not as disordered as liquid. Rather, it has a certain (one-dimensional or two-dimensional) orderliness. It is a new type of polymer material, which generally exhibits liquid crystallinity in the molten state. These materials have excellent heat resistance and formability. [0003] Liquid crystal polymers can be further divided into lyotropic liquid crystal polymers and thermotropic liquid crystal polymers. The former is in a liquid crystal state in a solvent, and the latter is in a liquid crystal state due to temperature changes. Thermotropic liquid crystal polymers have more e...

Claims

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Application Information

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IPC IPC(8): C08L67/00C08L33/04C08K7/28C09K19/38
CPCC08L67/00C09K19/3809C08K2201/003C08L33/04C08K7/28
Inventor 金东植刘彬孟华周小宇
Owner 江苏沃特特种材料制造有限公司
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