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Polysulfone/thermotropic liquid crystal polymer/rigid filled composite material and preparation method thereof

A technology of composite material and thermotropic liquid crystal, which is applied in the field of polysulfone/thermotropic liquid crystal polymer/rigid filler composite material and its preparation, can solve few problems, reduce viscosity, have broad application prospects, and improve processing performance Effect

Inactive Publication Date: 2008-04-16
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although studies on improving the processability of polysulfone with thermotropic liquid crystal polymers have been reported (S.M.Hong, B.C.Kim, K.U.Kim, Polym.J., 1991, 23: 1347), polysulfone was processed using TLCP and rigid fillers at the same time. There are few reports of modification (J.Chen, P.Chen, J.Zhang, J.He, Polymer, 2006, 47:5402)
However, there is no report on the processing performance of the hybrid system.

Method used

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  • Polysulfone/thermotropic liquid crystal polymer/rigid filled composite material and preparation method thereof
  • Polysulfone/thermotropic liquid crystal polymer/rigid filled composite material and preparation method thereof
  • Polysulfone/thermotropic liquid crystal polymer/rigid filled composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Fully dry polysulfone (intrinsic viscosity 0.54, 25°C, CHCl 3 ), thermotropic liquid crystal polymer (PHB / HNA73 / 27, Vectra A950, Ticona Celanese Company, USA) and hollow glass microspheres (GB2) with a diameter of 2 μm in weight ratio of 100 / 0 / 0, 80 / 20 / 0 , 80 / 20 / 9.7, 80 / 20 / 20.0 and 80 / 20 / 45.0 were melt blended on a Haake RC-90 internal mixer, the mixing temperature was 305°C, and the rotor speed was 50rpm. After granulation and drying, the obtained pellets were preheated at 290° C. for 6 minutes, and then the rheological properties were tested with a Rosand RH7 capillary rheometer. The inner diameter of the capillary used was 1 mm, and the aspect ratio was 16. The obtained viscosity data are all corrected by capillary end effect (Bagley correction), and the rheological curve of the obtained material is as follows: figure 1 shown.

Embodiment 2

[0036] Fully dry polysulfone (intrinsic viscosity 0.54, 25°C, CHCl 3 ), thermotropic liquid crystal polymer (PHB / HNA73 / 27, Vectra A950, Ticona Celanese Company, USA) and hollow glass microspheres (GB5) with a diameter of 5 μm in a weight ratio of 100 / 0 / 0, 80 / 20 / 0, 80 / 20 / 7.4, 80 / 20 / 15.7 and 80 / 20 / 35.5 were melt blended on a Haake RC-90 internal mixer. Blending condition and rheological property test condition are the same as embodiment 1, and the rheological curve of gained material is as follows image 3 shown.

Embodiment 3

[0041] Fully dry polysulfone (intrinsic viscosity 0.54, 25°C, CHCl 3 ), thermotropic liquid crystal polymer (PHB / HNA73 / 27, Vectra A950, Ticona Celanese Company, USA) and hollow glass microspheres (GB20) with a diameter of 20 μm in a weight ratio of 100 / 0 / 0, 80 / 20 / 0, 80 / 20 / 6.5, 80 / 20 / 14.0 and 80 / 20 / 31.3 were melt blended on a Haake RC-90 internal mixer. Blending conditions and rheological performance test conditions are the same as in Example 1. The rheological curve of the obtained material is as Figure 5 shown.

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Abstract

The invention discloses composite material made of polysulfone, thermotropic liquid crystal polymer and rigid packing. The composite material contains the following portions by weight of compositions: the polysulfone 60-99, the rigid packing 1-50 and the thermotropic liquid crystal polymer 1-20. When the composite material made of polysulfone, thermotropic liquid crystal polymer and rigid packing provided by the invention is fused for processing, basal body resin and TLCP are both fused masses. The TLCP has good fluidity, thereby reducing the viscosity of the whole composite material and improving the processing performance of the composite material. Furthermore, the rigid packing with different sizes can disperse with the TLCP and produce a synergistic effect on rheology, thereby greatly reducing the viscosity of a ternary mixing system which is far lower than that of a pure PSF and a PSP / packing composite system and is even lower than the fused mass viscosity of a PSF / LCP binary mixing system, and accordingly greatly improving the processing performance of the polysulfone and having a broad application prospect.

Description

technical field [0001] The invention relates to a polymer composite material, in particular to a composite material of polysulfone / thermotropic liquid crystal polymer / rigid filler and a preparation method thereof. Background technique [0002] Composite material is a multiphase composite system, which can be heterogeneous and heterogeneous or homogeneous and heterogeneous. Therefore, through different composition, different phase structure, different content and different ways of compounding, composite materials meeting different purposes can be manufactured. Addition of thermotropic liquid crystal polymers (TLCPs) to the polymer can reduce the melt viscosity of the composite and increase the strength and modulus of the material. [0003] In the past, the research on composite materials containing thermotropic liquid crystal polymers mainly focused on the matrix resin / TLCP binary blend system, that is, in-situ composites (In-situ Composites), and the matrix resins are mostl...

Claims

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Application Information

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IPC IPC(8): C08L81/06C08K7/14C09K19/38
Inventor 何嘉松陈俊吴立传陈鹏余坚张军
Owner INST OF CHEM CHINESE ACAD OF SCI
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