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Polyamide/graphite nano conductive composite material and its prepairng method

A composite material and nano-conductive technology, which is applied in the field of polyamide/graphite nano-conductive composite materials, can solve problems such as complex process and difficult recycling, and achieve the effects of high conductivity, good antistatic property and broad industrialization prospects

Inactive Publication Date: 2007-01-24
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they all use intercalation polymerization and solution intercalation. These two methods are difficult to recover due to the complex process and the use of a large amount of solvent in the solution method, which limits their industrial application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Mix 2 to 40 parts of expanded graphite with 100 parts of main matrix nylon 6 and 25 parts of auxiliary matrix polyester (PET) and add them to the equipment that can provide shear force and simultaneously heat the polymer to above the melting point ( Such as: Haake torque rheometer or internal mixer or twin-screw extruder) melt blending, that is, to obtain conductive composite materials. The electrical conductivity data of the composite materials are listed in Table 1.

Embodiment 2

[0029] Fixed expanded graphite accounts for the mass percentage (6%) of the total system, 100 parts of main matrix nylon 6, 5 to 60 parts of auxiliary matrix polyester (PET), and after mixing evenly, add it to both the shear force and the polymer Melting and blending in a device heated above the melting point (such as a Haake torque rheometer or a mixer or a twin-screw extruder) to obtain a conductive composite material. The electrical conductivity data of the composite materials are shown in Table 2.

Embodiment 3

[0031] Fixed expanded graphite accounted for the mass percentage (6%) of the total system, 100 parts of the main matrix nylon 6, 5 to 60 different parts of the auxiliary matrix, mixed evenly and added to the mixture that can not only provide shear force but also heat the polymer to the melting point at the same time Melting and blending in the above equipment (such as Haake torque rheometer or internal mixer or twin-screw extruder) can obtain the conductive composite material. The electrical conductivity data of the composites are shown in Table 3.

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PUM

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Abstract

The present invention relates to a kind of nanometer conductive composite polyamide / graphite material and its preparation process. The nanometer conductive composite material consists of polyamide as main base 100 weight portions, auxiliary base 5-60 weight portions, and graphite 2-40 weight portions. It has relatively low percolation threshold, 3-4 %, and relatively high conductivity. Owing to the filled conductive material in relative small amount, the nanometer conductive composite material has excellent mechanical performance and processability similar to that of nylon and high electrostatic resistance, so that it is wide application foreground in electrostatic resisting material, electromagnetic shielding material, microwave absorbing material, etc.

Description

technical field [0001] The invention relates to a polyamide / graphite nano-conductive composite material, in particular to the preparation of the polyamide / graphite nano-conductive composite material by adopting a melt blending intercalation method of a multiphase polymer system and graphite. Background technique [0002] Polyamide (nylon) is a widely used engineering plastic, and its output ranks first among the five major engineering plastics. Nylon has excellent physical and mechanical properties: high tensile strength, excellent wear resistance, good self-lubrication, good impact resistance, and outstanding chemical and oil resistance. It has been widely used in automobile manufacturing, electronics industry, aviation industry and so on. However, nylon is an insulator with a bulk conductivity of 10 -14 Below S / cm, the antistatic performance is poor, and it is easy to accumulate static charges, which brings inconvenience to production and life and limits its application....

Claims

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Application Information

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IPC IPC(8): C08L77/00C08K3/04
Inventor 张明李大军严长浩王文吴德峰陆宏良
Owner YANGZHOU UNIV
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