Composite material of containing granule stuffing and polymer of thermotropic liquid crystal preparation method and application

A composite material and particle filler technology, applied in liquid crystal materials, chemical instruments and methods, etc., can solve problems such as poor melt fluidity, and achieve the effects of improving processing performance, reducing viscosity, excellent flow performance and dimensional stability

Inactive Publication Date: 2005-03-30
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the disadvantages of poor melt fluidity of nylon 6 and glass microsphere-filled nylon

Method used

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  • Composite material of containing granule stuffing and polymer of thermotropic liquid crystal preparation method and application
  • Composite material of containing granule stuffing and polymer of thermotropic liquid crystal preparation method and application
  • Composite material of containing granule stuffing and polymer of thermotropic liquid crystal preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1:

[0031] The raw materials are nylon 6 (relative viscosity 3.2), hollow glass beads with a diameter of 3 μm and thermotropic liquid crystal polymer (PHB / HNA 73 / 27, Vectra A950, Ticona Celanese Company, USA) in a weight ratio of 84:5:11 Melt blending on a Haake RC-90 twin-screw extruder, the temperature from the feeding port to the die is set to 260-280-280-280. The extruded bar was cooled and pelletized, and the resulting pellets were tested for rheological properties on a Goettfert Rheograph 2001 capillary rheometer. The inner diameter of the capillary used is 1mm, and the ratio of length to diameter is 30. The experiment temperature is 280°C, and the material is preheated for 4 minutes.

Example Embodiment

[0036] Example 2:

[0037] The weight ratio of nylon 6, glass beads and thermotropic liquid crystal polymer is 51 / 38 / 11, and other conditions are the same as in Example 1.

Example Embodiment

[0042] Example 3:

[0043] The weight ratio of nylon 6, glass microspheres and thermotropic liquid crystal polymer is 34:55:11, the specifications of hollow glass microspheres and thermotropic liquid crystal polymer are the same as in Example 1, and the preparation and testing methods are the same as in Example 1.

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Abstract

This invention discloses a complex material contg. granular packing and thermal liquid polymer (TCLP), mfg. method and use thereof. Said complex material is composed of (by wt. portion): 30-85 nylon 6, 5-70 granular packing and 1-20 TLCP, where-in, granular packing being hollow glass micro-balls (GB), solid glass micro-balls, SiO2 or CaCO3 with granularity of 1-100 mum; TLCP being main-chain type aromatic copolymer with its molten-range of 190-360 deg.C. Said complex material is made by molen-blending method. This product has excellent flow-ability and dimension-stability. It has potential superiority in mfg. thin-wall plastic products of fine-structure plastic products.

Description

Technical field [0001] The invention relates to a hybrid composite material of particle fillers, in particular to a hybrid composite material containing spherical rigid particle filler and thermotropic liquid crystal polymer. [0002] The present invention also relates to a method for preparing the above-mentioned materials. [0003] The invention also relates to the use of the aforementioned materials. Background technique [0004] The composite material is a multi-phase composite system, which can be heterogeneous and heterogeneous or homogeneous and heterogeneous. Therefore, by combining different qualitative compositions, different phase structures, different contents and different ways of compounding, it is possible to manufacture composite materials that meet different purposes. Adding thermotropic liquid crystal polymer (TLCP) to the polymer can reduce the melt viscosity of the composite material and increase the strength and modulus of the material. [0005] In the past, ...

Claims

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Application Information

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IPC IPC(8): C08K7/20C08L77/00C09K19/38
Inventor 何嘉松丁艳芬陈鹏
Owner INST OF CHEM CHINESE ACAD OF SCI
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