Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (11): 20220359.doi: 10.7503/cjcu20220359

• Polymer Chemistry • Previous Articles     Next Articles

Preparation and Properties of Bifunctional Polydimethysiloxane/Copper Nanowire Composite Films

ZHANG Tao1, SHAO Liang1(), ZHANG Menghui1, MA Zhonglei2, LI Xiaoqiang3, MA Jianzhong4   

  1. 1.Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry,Ministry of Education,Shaanxi University of Science and Technology,Xi’an 710021,China
    2.Shaanxi Key Laboratory of Macromolecular Science and Technology,School of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi’an 710072,China
    3.Northwest Rubber & Plastics Research & Design Institute Co. ,Ltd. ,Xianyang 712023,China
    4.College of Bioresources Chemical and Materials Engineering,Xi’an Key Laboratory of Green Chemicals and Functional Materials,Shaanxi University of Science and Technology,Xi’an 710021,China
  • Received:2022-05-19 Online:2022-11-10 Published:2022-08-01
  • Contact: SHAO Liang E-mail:shaoliang@sust.edu.cn
  • Supported by:
    the Key Research and Development Program of Shaanxi, China(2021GY-238);the Innovation Capability Support Program of Shaanxi, China(2021TD-16);the Special Foundation for Science and Technology Major Plan of Xianyang, China(2018k01-46);the Open Project of Key Laboratory of Auxiliary Chemistry and Technology of Light Chemical Industry, Ministry of Education Jointly Built by the Province and Ministry, China(KFKT2020-09)

Abstract:

A polydimethylsiloxane/copper nanowires(PDMS/CuNWs) composite film was prepared by an environmental-friendly glucose templating method and an improved wet chemical reduction method. PDMS/CuNWs composite adopts a “sandwich-like structure” design. It effectively solves the problem that copper is easily oxidized in the air, which leads to a significant drop in electrical conductivity. At the same time, a bifunctional lightweight and flexible composite film with excellent electromagnetic shielding and photothermal conversion properties is obtained. The performance retention rate of the composite film with an CuNWs area density of 1.6 g/cm2 can reach up to 99.07% after 1000 repeated bending times; the total electromagnetic shielding efficiency of the composite film with an area density of 2.4 g/cm2 in the X-band reaches 30.1 dB, and the shielding efficiency reaches 99.9%; meanwhile, under the irradiation of near-infrared light of 2 W/cm2, the surface temperature of the composite film is as high as 211.2 ℃ after heating for only 15 s. PDMS/CuNWs composite has a very fast photothermal response and conversion efficiency.

Key words: Polydimethylsiloxane, Copper nanowire, Electromagnetic shielding, Photothermal conversion

CLC Number: 

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