Preparation method of composite conductive polylactic acid material
A composite conductive and composite conductive powder technology, which is applied in the field of preparation of polyaniline composite conductive polymer materials, can solve the problems of matrix polymer material comprehensive mechanical properties and processing molding performance damage, cost increase, etc., to reduce other performance decline, Good processability, high electrical conductivity effect
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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 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 melt an...
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