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High-tenacity conducting nanocomposite material and preparation method thereof

A composite material and conductive nano technology, which is applied in the field of high-toughness conductive nano-composite materials and its preparation, can solve the problems that the electrical and mechanical properties of materials cannot be improved at the same time, so as to improve energy transfer efficiency, improve electrical conductivity, and have high industrial compatibility. Effect

Active Publication Date: 2012-07-25
BEIJING UNIV OF CHEM TECH
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  • Description
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  • Application Information

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Problems solved by technology

[0005] In order to overcome the inability to simultaneously improve the electrical and mechanical properties of materials in the prior art, the present invention provides a high-toughness conductive nanocomposite material of polymer / conductive filler / inorganic rigid particles, which can improve the mechanical properties of the material while improving the electrical conductivity of the material , especially the impact strength
In order to solve this problem, it is necessary to modify the surface of nano calcium carbonate

Method used

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  • High-tenacity conducting nanocomposite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Step 1: Heat the mixer to 100°C, add 500g of nano-calcium carbonate (particle size 15-40nm) to remove the water in the particles. Then 15g of boron-aluminum-titanium composite coupling agent-purchased from Shanxi Ruicheng Xintai Nano Material Co., Ltd. was added, and the modified nano-calcium carbonate was obtained after uniform mixing;

[0026] Step 2: Take 300g of the modified nano calcium carbonate obtained in Step 1 and 670g of high-density polyethylene (density 0.95g / cm 3 ) Mix uniformly in a mixer to obtain a mixture;

[0027] Step 3: Add 30g of carbon nanotubes (tube diameter 20-30nm, length 10-30μm) to the mixture obtained in step two, and mix it evenly, then use the twin-screw extruder at 180 / 190 / 200 / 210 / 220 / 230 / 225 / Melt extrusion pelletizing at 220°C.

[0028] The performance test results of the obtained composite material are shown in Table 1.

Embodiment 2

[0030] The implementation method is the same as in Example 1, and the coupling agent is changed to 10g titanate coupling agent 105. The test results are shown in Table 1.

Embodiment 3

[0032] The implementation method is the same as in Example 1. The modified nano calcium carbonate is changed to 200 g, the high density polyethylene is changed to 770 g, and the carbon nano tube is changed to 30 g. The test results are shown in Table 1.

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Abstract

The invention relates to a high-tenacity conducting nanocomposite material and a preparation method thereof. The electrical conductivity of a polymer material is improved, at the same time, the mechanical properties, especially shock resistance, of the material is improved. The composite material uses carbon nanotubes as an electrically-conducting part, and is added with inorganic rigid calcium carbonate nano particles, further improves the electrical conductivity of the composite material by utilization of the volume exclusion effect of nano calcium carbonate, and at the same time, the inorganic toughening effect is achieved through the surface modification of nano calcium carbonate. The preparation method provided by the invention is simple and is suitable for industrial production; and the prepared composite material has high elastic modulus, impact strength and specific conductivity.

Description

Technical field: [0001] The invention relates to a high toughness conductive nano composite material, in particular to a high toughness conductive nano composite material and a preparation method. The significantly improved elastic modulus, impact strength and electrical conductivity of the high-density polyethylene matrix of the present invention, and the prepared composite material can be widely used in the fields of automobiles, electronics, household appliances and the like. In addition, the preparation method of the present invention is simple and has a high degree of compatibility with industry. Background technique [0002] With the rapid development of science and technology and petrochemical industry, polymer materials have been more and more widely used in production and life. However, with the rapid development of the times, various new requirements have been put forward for the performance of materials. In order to meet the needs of different applications, functiona...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K9/04C08K3/26C08K7/00C08K3/04
Inventor 于中振赵天武张笑笑
Owner BEIJING UNIV OF CHEM TECH
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