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Modified PCT resin compound and preparation method thereof

A resin compound and modification technology, which is applied in the field of modified PCT resin compound and its preparation, can solve the problems of poor processing fluidity, unstable injection pressure, poor processing performance, etc., and achieve the improvement of tensile strength and the production of raw materials The effect of simplicity and good processability

Active Publication Date: 2018-07-13
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 invention provides a modified PCT resin compound and a preparation method thereof to solve the problems of poor processing fluidity and unstable injection pressure in the injection molding process of existing PCT resins.

Method used

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  • Modified PCT resin compound and preparation method thereof
  • Modified PCT resin compound and preparation method thereof
  • Modified PCT resin compound and preparation method thereof

Examples

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preparation example Construction

[0032] 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.

[0033] 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.

[0034] In any embodiment, the first filler is at least one of glass fiber, whisker, polytetrafluo...

Embodiment 1

[0050] A modified PCT resin composite, comprising the following components in parts by weight:

[0051]

[0052] The preparation method of the modified PCT resin compound that embodiment 1 provides is as follows:

[0053]Step S01, 30 parts of PCT resin (produced by American Eastman Chemical Company), 30 parts of fully aromatic liquid crystal polyester resin (produced by Jiangsu Water Special Materials Co., Ltd.), 30 parts of titanium dioxide, and 10 parts of glass fiber were placed in Dry at 130°C for 4 hours;

[0054] Step S02, putting the dried PCT resin, glass fiber, titanium dioxide and wholly aromatic liquid crystal polyester resin into an automatic mixer and mixing evenly to obtain a mixed material;

[0055] 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 PCT resin compound.

Embodiment 2

[0057] A modified PCT resin composite, comprising the following components in parts by weight:

[0058]

[0059] The preparation method of the modified PCT resin compound that embodiment 2 provides is as follows:

[0060] Step S01, 40 parts of PCT resin (produced by American Eastman Chemical Company), 20 parts of fully aromatic liquid crystal polyester resin (produced by Jiangsu Water Special Materials Co., Ltd.), 30 parts of titanium dioxide, and 10 parts of glass fiber were placed in Dry at 130°C for 4 hours;

[0061] Step S02, putting the dried PCT resin, glass fiber, titanium dioxide and wholly aromatic liquid crystal polyester resin into an automatic mixer and mixing evenly to obtain a mixed material;

[0062] 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 PCT resin compound.

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Abstract

The invention belongs to the technical field of polymer-based composites and particularly discloses a modified PCT resin compound and a preparing method thereof. The modified PCT resin compound is prepared from, by weight, 30-70 parts of PCT resin, 10-40 parts of liquid crystal polyester resin, 5-40 parts of first filler and 10-40 parts of second filler. The modified PCT resin compound has a large reflective rate; moreover, tensile strength is improved obviously, melt viscosity and the average change rate of injection molding pressure are reduced greatly, and finally the processability of the PCT resin compound is improved greatly.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to a modified PCT resin composite and a preparation method thereof. Background technique [0002] Because poly-1,4-cyclohexanedimethylene terephthalate (English abbreviation: PCT) has good chemical resistance, processability, dimensional stability and heat resistance, it is especially suitable for material performance requirements. strict field. In view of the characteristics of PCT, up to now, it has been widely used in industries such as automobiles, electronics and electrical industries, especially as a raw material for LED reflectors. [0003] From the perspective of the development trend of LED, with the development of LED-related fields, in order to improve the light-gathering effect, the structure of LED reflectors is becoming more and more complex, which puts forward further requirements for the processing performance of PCT raw materials for manufacturi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L67/00C08L77/00C08K7/14C08K3/22
CPCC08L67/00C08L67/02C08L77/00C08K7/14C08K2003/2241
Inventor 金东植高海燕杨云飞周小宇
Owner JIANGSU WATER SPECIAL MATERIAL MFG CO LTD
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