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《Chinese Journal of Vacuum Science and Technology》 2015-10
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Surface Modification of Carbon Fiber / Resin Composite Material with Low Temperature N_2-O_2-Plasma

Yang Tao;Ni Xinliang;Jin Fanya;Shen liru;Chen Meiyan;Tong Honghui;Gong Xueyu;China Southwestern Institute of Physics;School of Nuclear Science and Technology,University Of South China;School of Nuclear Science and Technology,University of Science and Technology of China;  
The surfaces of the carbon fiber / resin composite material were modified with N2-O2-plasma,generated by Hall discharge. The influence of the modification conditions,including but not limited to the pressure,plasma current and ratio of N2 and O2flow rates,on the microstructures,compositions and properties of the surfaces was investigated with scanning electron microscopy and infrared spectroscopy. The results show that depending on the modification conditions,the N2-O2-plasma,outperforming the N-plasma,significantly affects the wettability,surface roughness,bond breaking and interfacial adhesion of the carbon fiber and resin. To be specific,as the pressure and plasma current increased,the water-contact angle of the composite changed in a mode of abrupt decrease and slow increase,after storage in di-ionized water,minimized at 1 Pa and plasma current of 1 A. In addition,the plasma strongly increased the interface adhesion of carbon fiber and resin,surface roughness,and the densities of CH2-OCH2,C = N and C≡N polar groups,because of bond-breaking of methyl and ester.
【Fund】: 四川省科技计划项目(2013GZX0168);; ITER计划国内配套专项(2013GB110006);; 青年科学基金项目(11305055)
【CateGory Index】: TB332
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