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High-conductivity polyolefin composite material and preparation method thereof

A technology of high conductivity and composite materials, applied in the direction of conductive materials dispersed in non-conductive inorganic materials, etc., can solve the problems of poor processability, mechanical properties, environmental stress cracking resistance, and high brittleness, and improve the phase interface state, large aspect ratio, and good conductivity

Inactive Publication Date: 2010-09-15
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

[0003] The purpose of the present invention is to provide a high-conductivity polyolefin composite material and its Preparation

Method used

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specific Embodiment approach 1

[0009] Specific Embodiment 1: In this embodiment, the highly conductive polyolefin composite material is composed of 100 parts of polyolefin, 0.2 to 2.0 parts of single-walled carbon nanotubes, 10 to 20 parts of superconducting carbon black, and 2 to 10 parts of conductive Metal oxide, 2-5 parts of titanate coupling agent, 2.5-25 parts of carbon nanotube dispersion, 1-5 parts of rheological agent, 0.2-1 part of primary antioxidant and 0.2-1 part of auxiliary antioxidant production.

[0010] All raw materials in this embodiment can be purchased from the market, among which the rheological agent can be purchased from 3M Company of the United States (rheological agent FX5924) and Shanghai Shichuan Chemical Co., Ltd. (rheological agent SC-PE200). The solution can be purchased from Shenzhen Nano Harbor Co., Ltd.

[0011] The volume resistivity of the conductive composite material in this embodiment is 0.3-1Ω·cm, the low-temperature impact embrittlement temperature is -76°C, the su...

specific Embodiment approach 2

[0012] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the highly conductive polyolefin composite material consists of 100 parts of polyolefin, 0.5-1.8 parts of single-walled carbon nanotubes, 12-18 parts of ultra- Conductive carbon black, 5-8 parts of conductive metal oxide, 3-4 parts of titanate coupling agent, 10-18 parts of carbon nanotube dispersion, 2-4 parts of rheological agent, 0.6-0.8 parts of primary antioxidant Made with 0.4-0.8 parts of auxiliary antioxidant.

specific Embodiment approach 3

[0013] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the highly conductive polyolefin composite material is composed of 100 parts of polyolefin, 1 part of single-walled carbon nanotube, 15 parts of superconducting carbon black, 7 parts of conductive metal oxide, 3.5 parts of titanate coupling agent, 14 parts of carbon nanotube dispersion, 3 parts of rheological agent, 0.6 part of primary antioxidant and 0.6 part of auxiliary antioxidant.

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Abstract

The invention discloses a high-conductivity polyolefin composite material and a preparation method thereof, relating to a composite material and a preparation method thereof and solving the problems that the traditional high-conductivity polyolefin composite material has higher brittleness and poorer processing performance, mechanical property and environment stress cracking resistant performance. The composite material is prepared from polyolefin, single-walled carbon nanotube, superconducting carbon black, conductive metal oxide, a titanate coupling agent, a carbon nanotube dispersion solution, a rheological agent, a main antioxidant and an auxiliary antioxidant. The method comprises the following steps of: firstly, weighting up raw materials; secondly, preparing the single-walled carbon nanotube dispersion solution; thirdly, preparing a single-walled carbon nanotube master batch; fourthly, mixing the superconducting carbon black with the titanate coupling agent; and fifth, mixing the raw materials. The conductive composite material has the advantages of excellent conductivity, lower brittleness and favorable processing performance, mechanical property and environment stress cracking resistant performance. The high-conductivity composite material is a high-conductivity polyolefin composite material with excellent comprehensive performance and wide application range.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof. Background technique [0002] According to the structure and composition of materials, conductive polymer materials are divided into two categories: structural type and composite type. Structural conductive polymer materials, also known as intrinsic conductive polymer materials, are materials that have conductive functions after chemical or electrochemical doping of polymers with conjugated π bonds or partial π bonds. Structural conductive polymer materials have disadvantages such as refractory, insoluble, difficult to form, mostly toxic and corrosive substances, narrow range of conductivity, poor conductivity stability and high cost. Very restrictive. Composite conductive polymer material is a multi-phase composite system with conductive function by adding one or more conductive substances and processing by dispersion compounding, lamination compounding, etc., based on p...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08K13/06C08K7/00C08K3/04C08K3/34C08K3/28C08K3/38C08K5/134C08J3/22H01B1/24
Inventor 韩宝忠李长明马凤莲
Owner HARBIN UNIV OF SCI & TECH
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