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Polyester / metal fibre conductive, heat conducting and fast crystallization composite material and preparation thereof

A metal fiber and composite material technology, which is applied in the field of polyester composite material preparation, can solve the problems of polyester molecular weight decrease, mechanical property deterioration, limited polyester crystallization rate, etc.

Inactive Publication Date: 2009-07-01
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organic carboxylate forms a nucleation center with the carboxyl end of the polyester to induce crystallization and increase the crystallization rate of the polyester; while the presence of the organic carboxylate simultaneously causes a decrease in the molecular weight of the polyester, resulting in a deterioration of the mechanical properties
Inorganic salt is a low-cost crystallization nucleating agent, but affected by the particle size and dispersion degree, it is very limited to improve the crystallization rate of polyester

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0067] The preparation method of the composite material may also include other common steps in the art.

[0068] For example, the individual components of the composition are dried beforehand. Specifically, the polyester can be dehydrated under vacuum at 140°C for 12h; or, the stainless steel fiber sliver treated with the surface of the coupling agent can be dried at 120°C for 12h.

[0069] The composite material can be made into various products as required. For example, plastic shells with electromagnetic shielding functions, plastic products with high strength and friction resistance, and various products with good heat dissipation capabilities.

[0070] Advantages of the present invention:

[0071] The present invention relates to a kind of preparation method of the polyester composite material of electric conduction, heat conduction and quick crystallization, mainly by polyester and stainless steel fiber, the present invention has good electric conduction, heat conducti...

Embodiment 1

[0077] The stainless steel fiber sliver (the diameter of the fiber filament in the sliver is 8 μm, and the length is 4 mm) is refluxed in a 1:5 ethanol dilution solution of the coupling agent tetrabutyl orthotitanate for 2 hours. The dosage of the coupling agent tetrabutyl orthotitanate is: 0.5% by weight of the stainless steel fiber sliver.

[0078] 50 kilograms of polytrimethylene terephthalate (PTT) (brand name 503W, molecular weight 30000, U.S. Shell Company), 1.5 kilograms with 0.05 kilograms of tetrabutyl orthotitanate processed stainless steel fiber sliver and 0.5 kilograms of mass ratios are 1:1:1 processing aid (antioxidant 1010—Yixing Angel Synthetic Chemical Company; take off Molding agent—NS303, Oles Chemical Group, Germany ; Heat stabilizer GTWQ-1, Shandong Gangtai Industrial Co., Ltd. limited company ) was mixed with high-speed stirring to obtain a mixture.

[0079] The mixture is fed into a twin-screw extruder by a precision metering feeder, plasticized, ...

Embodiment 2

[0081] raw material:

[0082] The stainless steel fiber sliver (the diameter of the fiber in the sliver is 12 μm, and the length is 6 mm) is refluxed for 3 hours in a 1:5 ethanol dilution solution of the coupling agent tetrabutyl orthotitanate. The dosage of the coupling agent tetrabutyl orthotitanate is: 0.5% by weight of the stainless steel fiber sliver.

[0083] With 50 kilograms of polytrimethylene terephthalate (PTT) (brand 503W, molecular weight 30000, U.S. Shell Company), 3 kilograms with 0.1 kilogram of tetrabutyl orthotitanate processed stainless steel fiber and 0.7 kilogram mass ratio is 1: 1:1 processing aid (antioxidant 1010—Yixing Angel Synthetic Chemical Company; Release agent— NS303, Oles Chemical Group, Germany ; Heat stabilizer GTWQ-1, Shandong Gangtai Industrial Co., Ltd. ) was mixed with high-speed stirring to obtain a mixture.

[0084] preparation:

[0085] Same as Example 1

[0086] Table 1 is the electrical conductivity of embodiment 1-2 composit...

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Abstract

The invention provides a polyester / metal fiber composite material composition, which comprises the following components by weight portion: 100 portions of polyester, 0.5 to 100 portions of metal fiber subjected to surface treatment by a coupling agent, and 0 to 3.8 portions of optionally high-molecule acceptable processing aid. A polyester composite material integrating excellent electric conductivity, heat conductivity and quick crystallization property can be prepared by the polyester / metal fiber composite material composition.

Description

technical field [0001] The invention relates to a preparation method of a polyester composite material with electric conduction, heat conduction and fast crystallization. Background technique [0002] The volume resistivity of polymer materials is generally 10 10 ~10 20 Between Ω / cm, it has been used as an insulating material for a long time. With the rapid development of the electronics industry and information technology and other industries, the application range of polymer materials continues to expand, and the requirements for use are also increasing. The demand for conductive polymer materials is increasing. more urgent. The research and development of conductive polymer materials has been widely valued by countries all over the world. According to the structure, composition and preparation process of conductive polymer materials, they can be divided into two categories: structural type and composite type. Structural conductive polymer materials Material refers to a...

Claims

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Application Information

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IPC IPC(8): C08L67/03C08K9/06H01B1/22C09K5/14
Inventor 姚晨光杨桂生
Owner HEFEI GENIUS NEW MATERIALS
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