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High-toughness electric conduction nylon composite material and preparation method thereof

A nylon composite material, high toughness technology, applied in the field of nylon composite materials, can solve the problems of difficult to bear heavy load, nylon electrical insulation, high water absorption, limited application range, etc. low effect

Active Publication Date: 2014-04-23
合肥市和裕达塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with metals, nylon also has disadvantages such as electrical insulation, high water absorption, certain brittleness and difficulty in bearing heavy loads, which limits its application range.

Method used

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  • High-toughness electric conduction nylon composite material and preparation method thereof
  • High-toughness electric conduction nylon composite material and preparation method thereof
  • High-toughness electric conduction nylon composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～9

[0040] Take the raw materials according to the ratio shown in Table 1:

[0041] Table 1:

[0042]

[0043] in:

[0044]The preparation method of Examples 1-5 is as follows: weigh the dried polymer matrix slices, conductive carbon black, maleic anhydride grafted ethylene-octene copolymer (POE-g-MA), add 10ml liquid paraffin and mix well It is directly added into a twin-screw extruder with an aspect ratio of 25, melted and kneaded at a temperature of 220 / 230 / 240 / 240 / 235°C, and granulated. The screw speed is 62r / min. After the pellets are dried, they are injection molded into test samples. The injection molding temperature is 230 / 245 / 250 / 250 / 245°C, the injection pressure is 80MPa, and the mold temperature is 80°C. The performance test results of the obtained composite materials are shown in Table 2.

[0045] The preparation method of Examples 6-8 is as follows: weigh the dried polymer matrix slices, conductive carbon black, and ethylene-octene copolymer grafted with maleic...

Embodiment 9

[0046] The preparation method of Example 9 is as follows: Weigh 500g of dried PA6 slices, 200g of conductive carbon black, and 300g of POE-g-MA, add 10ml of liquid paraffin and mix evenly, add to a double-roller mill for mixing, and the mixing temperature is 240°C , The mixing time is 15min. After mixing, the compound was preheated at 245°C for 10 minutes without pressure, and then hot-pressed at 10 MPa for 10 minutes to prepare test samples. The performance test results of the obtained composite materials are shown in Table 2.

[0047] Table 2: Composite performance test results

[0048]

Embodiment 1

[0050] Examples 10-14 weighed the raw materials according to the proportions in Table 3, the preparation method was the same as that of Example 1, and the performance test results of the obtained composite materials were shown in Table 4.

[0051] table 3:

[0052]

[0053]

[0054] Table 4: Composite performance test results

[0055]

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Abstract

The invention relates to a nylon composite material and particularly relates to a high-toughness electric conduction nylon composite material and a preparation method thereof. The composite material comprises raw materials of 50-80 wt.% of a polymer matrix, 10-20 wt.% of carbon black, 10-30 wt.% of maleic anhydride grafted polyolefin elastomer and 0.5-1.5 wt.% of liquid paraffin. The electric conduction performance of the obtained composite material is better than that of a carbon black / polymer two-phase composite material, and compared with impact strength of a pure matrix and the carbon black / polymer two-phase composite material, the impact strength of the obtained composite material is substantially improved; according to the high-toughness electric conduction nylon composite material and the preparation method thereof, a one-step method preparation process is used, so that industrialization production is easy to achieve, and the composite material is suitable for large-scale popularization and application; and the cheap foundation raw materials are used, so that costs are obviously reduced, and the composite material has a good price advantage.

Description

technical field [0001] The invention relates to a nylon composite material, in particular to a high-toughness conductive nylon composite material and a preparation method of the composite material. Background technique [0002] With the rapid development of science and technology and the electronic industry, the application of conductive polymer composite materials is becoming more and more extensive. In addition to the advantages of light weight, easy processing, high elasticity, corrosion resistance, and wear resistance inherent in polymer materials, this type of material also needs to have certain electrical properties to meet the requirements of antistatic and conductive materials, electromagnetic shielding materials, and self-protection materials. The needs of temperature control heating materials and other fields. Conductive polymer composite materials are a kind of functional polymer composite materials made of insulating polymer matrix and conductive filler in a cer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/00C08L77/02C08L77/06C08L51/06C08K3/04B29C47/92B29C48/92
CPCB29C48/40B29C48/875B29C48/92B29C2948/92704B29C2948/92895
Inventor 于中振胡娟张好斌何顺伦余莉花
Owner 合肥市和裕达塑业有限公司
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