PCTFE modified filling composite material and production method thereof

A PCTFE and composite material technology, applied in the field of PCTFE modified filled composite material and its production, can solve the problems of poor plasticization of difficult products, narrow molding temperature range, large melt viscosity, etc., and meet the requirements of processing temperature and holding time. Strict, wide molding temperature range, low melt viscosity

Inactive Publication Date: 2010-11-24
深圳市明鑫高分子技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing PCTFE modified filled composite materials have high melt viscosity and poor fluidity and can only be formed by molding.
Poor thermal conductivity and narrow molding temperature range, it is necessary to strictly control the processing temperature and holding time, and it is difficult to prevent poor plasticization of the product

Method used

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  • PCTFE modified filling composite material and production method thereof
  • PCTFE modified filling composite material and production method thereof
  • PCTFE modified filling composite material and production method thereof

Examples

Experimental program
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Embodiment Construction

[0019] In the first embodiment of the present invention, the percentage by weight of each component of PCTFE modified filled composite material is:

[0020] PCTFE polymer 85%--95%

[0021] Carbon fiber 4.2%--14.2%

[0022] Coupling agent 0.3%--0.8%

[0023] Referring to accompanying drawing, the production method of the PCTFE modified filling composite material of the first embodiment of the present invention comprises the steps:

[0024] 1. Raw material mixing: mix and stir each component in proportion;

[0025] 2. Extrusion and blending: Extrude with a twin-screw extruder, the screw test diameter ratio is 20:1 or 22:1, and the blending temperature is controlled at: barrel temperature 125°C-140°C, head temperature 145°C- 150°C;

[0026] 3. Heating and plasticizing: Select the corresponding mold according to the profile specifications, weigh the blended raw materials and add them to the prepared mold, and then put the mold into the heating equipment for hot pressing and pl...

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Abstract

The invention relates to a PCTFE modified filling composite material which comprises the following components in percentage by weight: 75-95% of PCTFE polymer, 4.2-24.2% of carbon fiber and 0.3-0.8% of coupling agent. The production method comprises the following steps: (1) material mixing; (2) extruding and blending; (3) plastifying by heating; and (4) setting by cold pressing. The PCTFE modified filling composite material has the advantages of low melt viscosity, favorable flowability, favorable thermal conductivity, wide forming temperature range, low requirements for processing temperature and soaking time, and favorable product plastication, and can be formed by multiple methods.

Description

【Technical field】 [0001] The present invention relates to a homopolymer or copolymer composition containing fluorine atoms and having one or more unsaturated aliphatic group compounds, in particular to polychlorotrifluoroethylene. 【Background technique】 [0002] PCTFE (polychlorotrifluoroethylene) modified filled composite material is one of the most important high-end materials in the field of new polymer functional materials and new composite materials. Based on PCTFE material, carbon fiber or glass fiber and coupling agent are added under specific process conditions. After blending and extruding through a twin-screw extruder, it is added to the mold, heated and plasticized, and cold-pressed to shape it. PCTFE modified special functional composite new material with excellent and stable performance. The main features of this product reflect high strength, high modulus, fatigue resistance, corrosion resistance, wear resistance, low temperature resistance, high pressure resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/12C08K13/04C08K7/06C08K5/5415B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704B29C2948/92895
Inventor 成鹏
Owner 深圳市明鑫高分子技术有限公司
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