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Preparation method of polylactic acid composite conductive material

A technology of composite conductive and composite conductive powder is applied in the field of preparation of polyaniline composite conductive polymer materials, which can solve the problems of increased cost, damage to the comprehensive mechanical properties and processing and molding properties of matrix polymer materials, etc., and achieves shortened swelling time, weakened Other performance degradation, not easy to penetrate the effect

Inactive Publication Date: 2016-09-07
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the matrix material is an insulator, the conduction of the composite material can only be achieved by the contact of the polyaniline particles in the matrix to form a conductive path.
However, the mechanical blending method is difficult to disperse the polyaniline particles uniformly in the matrix, and a large amount of polyaniline must be added to obtain a composite material with high electrical conductivity, which not only increases the cost, but also affects the comprehensive mechanical properties of the matrix polymer material and Processing and forming properties have a great detrimental effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 25 grams of aniline monomer to 75 grams of EPDM powder and stir evenly. Under the conditions of ultrasonic power of 200W and frequency of 20kHz at 20°C, it is subjected to ultrasonic radiation treatment. The treatment time is 0.5 hours. Diffusion into the EPDM powder, causing it to swell.

[0020] Immerse 30 grams of swollen EPDM rubber powder into 1000 grams of 1.0mol / L p-toluenesulfonic acid aqueous solution, control the temperature at 0°C, and dissolve 60 grams of ammonium persulfate in 1.0mol / L p-toluenesulfonic acid solution. 500 grams of p-toluenesulfonic acid aqueous solution was added slowly, and the reaction time was 10.0 hours. After the reaction, the material was washed with water and dried to obtain EPDM / polyaniline composite conductive powder.

[0021] Put 40 grams of EPDM / polyaniline composite conductive powder and 40 grams of polylactic acid into a high-speed mixer, control the mixing temperature at 60 ° C, mix evenly, use a twin-screw extruder to mel...

Embodiment 2

[0023] Add 50 grams of aniline monomer to 50 grams of EPDM rubber powder and stir evenly. Under the conditions of ultrasonic power of 500W and frequency of 120kHz at 10°C, it is subjected to ultrasonic radiation treatment for 0.5 hours, and the aniline monomer It diffuses into the EPDM powder and makes it swell.

[0024] Immerse 40 grams of swollen EPDM rubber powder into 1000 grams of 1.0mol / L p-toluenesulfonic acid aqueous solution, control the temperature at 0°C, and dissolve 60 grams of ammonium persulfate in 1.0mol / L p-toluenesulfonic acid solution. 500 grams of p-toluenesulfonic acid aqueous solution was added slowly, and the reaction time was 10.0 hours. After the reaction, the material was washed with water and dried to obtain EPDM / polyaniline composite conductive powder.

[0025] Put 40 grams of EPDM rubber / polyaniline composite conductive powder and 40 grams of polypropylene into a high-speed mixer, control the mixing temperature at 60 ° C, mix evenly, use a twin-scr...

Embodiment 3

[0027] Add 40 grams of aniline monomer to 60 grams of EPDM rubber powder and stir evenly. Under the conditions of ultrasonic power of 3000W and frequency of 59kHz at 15°C, it is subjected to ultrasonic radiation treatment. The treatment time is 1.5 hours. Diffusion into the EPDM powder, causing it to swell.

[0028] Immerse 60 grams of the swollen EPDM rubber powder into 1000 grams of 1.0mol / L p-dodecylbenzenesulfonic acid aqueous solution, control the temperature at 10°C, and dissolve 0.5mol / L of 120 grams of ammonium persulfate 500 grams of p-toluenesulfonic acid aqueous solution of L was slowly added, and the reaction time was 2.0 hours. After the reaction, the material was washed with water, and dried to obtain EPDM / polyaniline composite conductive powder.

[0029] Put 50 grams of EPDM rubber / polyaniline composite conductive powder and 50 grams of polylactic acid into a high-speed mixer, control the mixing temperature at 50 ° C, mix evenly, use a twin-screw extruder to mel...

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Abstract

The invention discloses a preparation method of a composite conductive polylactic acid material. The preparation method comprises the following steps of 1 adding an aniline monomer into ethylene propylene diene monomer powder to obtain swelled ethylene propylene diene monomer powder, 2 obtaining ethylene propylene diene monomer / composite conductive polyaniline powder, 3 putting the ethylene propylene diene monomer / composite conductive polyaniline powder obtained in the step 2 and polylactic acid into a high-speed mixing machine to obtain ethylene propylene diene monomer / polyaniline / composite polylactic acid particles into a mold to obtain the composite conductive polylactic acid material. In the preparation method, the assisting effect of ultrasonic waves enables the ethylene propylene diene monomer powder to swell and produce cavatition effect, the diffusion speed of the aniline monomer can be improved, and swelling time can be shortened.

Description

technical field [0001] The invention belongs to the field of composite conductive material preparation, in particular to a preparation method of polyaniline composite conductive polymer material. Background technique [0002] High-quality materials are light in weight, cheap, superior in mechanical and electrical insulation properties, easy to process, and safe to use, so they have achieved rapid development and wide application. Polymer material facilitates people's life because of its excellent insulation, but it also brings many troubles and even disasters. In recent years, with the rapid development of electronic devices and large-scale integrated circuits, the hazards of static electricity and electromagnetic waves have become more prominent. Therefore, it is of great practical significance to change the insulation properties of polymer materials. [0003] To make conventional polymer materials antistatic, researchers have used metals, graphene, carbon nanotubes, cond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L23/16C08L79/02C08G73/02C08K5/42
Inventor 潘玮张慧勤陈燕黄沅辉
Owner ZHONGYUAN ENGINEERING COLLEGE
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