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PPS (polyphenylene sulfite)/LCP (liquid crystal polymer) composite material and preparation method thereof

A composite material and raw material technology, applied in the field of PPS/LCP composite material and its preparation, can solve problems such as poor rigidity and poor strength, and achieve the effects of low cost, simple preparation process and good economic benefits

Inactive Publication Date: 2010-07-07
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a high-strength, high-rigidity PPS / LCP composite for the disadvantages of hard and brittle polyphenylene sulfide in the prior art, and the defects of poor strength and rigidity in liquid crystal polymers. Material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: A PPS / LCP composite material made of the following raw materials in parts by weight: 35.5 parts of polyphenylene sulfide, 23.6 parts of liquid crystal polymer E130i, 0.5 parts of γ-glycidoxypropyltrimethoxysilane, 40 parts of alkali-free rough-twisted long glass fiber, 0.2 part of TAF bright lubricant, 0.1 part of talcum powder, and 0.2 part of heavy barium sulfate.

[0039] Preparation method: a: firstly dry the polyphenylene sulfide resin and the liquid crystal polymer E130i at 140°C and 130°C for 8 hours;

[0040] b: Use a high-speed mixer to mix TAF bright lubricant, talcum powder, and heavy barium sulfate at high speed, and then put it in a drying oven for drying. The drying temperature is 90 ° C, and the drying time is 3 hours;

[0041] c: Put the raw materials processed in steps a and b into a high-speed mixer, then add the compatibilizer γ-glycidyloxypropyltrimethoxysilane and mix evenly for 5 minutes;

[0042] d: Put the mixed raw materials in step ...

Embodiment 2

[0043] Example 2: A PPS / LCP composite material made of the following raw materials in parts by weight: 41.3 parts of polyphenylene sulfide, 17.7 parts of liquid crystal polymer E130i, 0.5 parts of γ-glycidoxypropyltrimethoxysilane, 30 parts of alkali-free rough twisted long glass fiber, 0.2 part of TAF bright lubricant, 0.2 part of talcum powder, 0.1 part of heavy barium sulfate

[0044] Preparation method: a: firstly dry polyphenylene sulfide resin and liquid crystal polymer E130i at 145°C and 150°C for 6 hours with air blast;

[0045] b: Use a high-speed mixer to mix TAF bright lubricant, talcum powder, and heavy barium sulfate at high speed, and then put it in a drying oven for drying. The drying temperature is 95 ° C, and the drying time is 2 hours;

[0046] c: Put the raw materials processed in steps a and b into a high-speed mixer, then add γ-glycidoxypropyltrimethoxysilane and mix evenly for 5 minutes;

[0047] d: Put the mixed raw materials in step c into the hopper o...

Embodiment 3

[0048] Example 3: A PPS / LCP composite material made of the following raw materials in parts by weight: 40.8 parts of polyphenylene sulfide, 16.5 parts of liquid crystal polymer E130i, 0.5 parts of γ-glycidoxypropyltrimethoxysilane, 40 parts of alkali-free rough-twisted long glass fiber, 0.2 part of TAF bright lubricant, and 0.5 part of talcum powder.

[0049]Preparation method: a: firstly dry the polyphenylene sulfide resin and the liquid crystal polymer E130i at 140°C and 160°C for 4 hours;

[0050] b: Use a high-speed mixer to mix TAF bright lubricant, talcum powder, and heavy barium sulfate at high speed, and then put it in a drying oven for drying. The drying temperature is 100 ° C, and the drying time is 1 hour;

[0051] c: Put the raw materials processed in steps a and b into a high-speed mixer, then add γ-glycidoxypropyltrimethoxysilane and mix evenly for 5 minutes;

[0052] d: Put the mixed raw materials in step c into the hopper of the twin-screw extruder, then add a...

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Abstract

The invention discloses a PPS (polyphenylene sulfite) / LCP (liquid crystal polymer) composite material and a preparation method thereof. The method comprises the following raw materials in parts by weight: polyphenylene sulfide, a liquid crystal polymer, a compatilizer, a filling and reinforcing agent, a lubricating agent and other aids. The preparation method comprises the following steps of: (a) respectively drying polyphenylene sulfide resin and the liquid crystal polymer; (b) uniformly mixing the filling and reinforcing agent, the lubricating agent and other aids; (c) mixing the raw materials processed in the steps (a) and (b) at a high speed, then adding the compatilizer and uniformly mixing; and (d) melting and extruding the mixed raw materials in the step (c) by using a double-screw extruder and granulating. The invention provides the PPS / LCP composite material having high strength and rigidity and also provides the preparation method of the PPS / LCP composite material with simple preparation process, low cost and good economic benefits.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a PPS / LCP composite material and a preparation method thereof. The composite material is suitable for connectors of precision parts, mobile phone slide rails, special aerospace, hairpin shells, automotive parts, valve cores, daily necessities, etc. Background technique [0002] Polyphenylene sulfide (PPS) is a linear rigid structure formed by directly connecting the para-position of the benzene ring in the molecular chain with the sulfur atom. It has high crystallinity and excellent dimensional stability and rigidity. It is known as the sixth general-purpose engineering plastic after the five general-purpose engineering plastics. It is the most cost-effective special engineering plastic, and its market share has reached about 20%. However, the structure of polyphenylene sulfide determines its disadvantages of being hard and brittle. [0003] Liquid crystal polymer (LCP...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/02C08L101/12C08K13/04B29B9/00B29C47/92B29C48/40B29C48/92
CPCB29C48/04B29C48/40
Inventor 郭宇嘉
Owner SHENZHEN KEJU NEW MATERIAL
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