Effect of Compound Rare Earth Modifier on Properties of MGF/PTFE Composites
YE Engan1, 2, WANG Haibo2, ZHU Yuehua2, JIANG Lihua2, ZHUO Ningze2
1 School of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009; 2 Research Institute of Electric Light Source Materials, Nanjing Tech University, Nanjing 210015
Abstract: Rare earth modifier (RES) and phenyl trimethoxy silane (PTMS) were used for the surface treatment of milled glass fiber (MGF) with different ratios. The composites were prepared by modified milled glass fiber powder and PTFE aqueous dispersion with hot pressing method after mechanical mixture. The effect of mixing ratios of RES/PTMS components on the dielectric properties, coefficient of thermal expansion and heat conduction properties of MGF/PTFE composites were investigated. FTIR spectra of RES, unmodified and modified of MGF were tested, and then the fracture surfaces were analyzed by SEM. The experimental results showed that mixing ratios of RES/PTMS components could promoting interfacial adhesion between the glass fiber and PTFE. Which was an effective way in improving the properties of the composites. The optimal performance of the prepared MGF/PTFE with the mass fraction of RES and PTME of 0.3% and 1.7% respectively.
1 Subodh G, Pavithran C, Mohanan P, et al. PTFE/Sr2Ce2Ti5O16, polymer ceramic composites for electronic packaging applications[J].Journal of the European Ceramic Society,2007,27(8-9):3039. 2 Tummala R R. Ceramic and glass ceramic packaging in the 1990s[J].Journal of the American Ceramic Society,2005,74(5):895. 3 Chan K S, Page R A. Origin of the creep-crack growth threshold in a glass-ceramic[J].Journal of the American Ceramic Society,2010,75(75):603. 4 Cheng Xianhua, Xue Yujun, Xie Chaoying, et al. Effect of rare earths modification of glass fiber on friction and wear properties of PTFE composite[J].Journal of Inorganic Materials,2002,17(6):1321(in Chinese). 程先华,薛玉君,谢超英,等.稀土改性玻璃纤维对PTFE复合材料摩擦磨损性能的影响[J].无机材料学报,2002,17(6):1321. 5 Cheng Xianhua, Xue Yujun, Xie Chaoying. Sliding wear behaviors of PTFE composite filied with glass fiber treated with rare earths[J].Acta Materiae Compositae Sinica,2003,20(3):108(in Chinese). 程先华,薛玉君,谢超英.稀土处理玻璃纤维填充PTFE复合材料的滑动磨损性能[J].复合材料学报,2003,20(3):108. 6 Yu Hongwei, Han Weirong, Liu Lei, et al. Two-dimensional infrared spectroscopy study on polytetrafluoroetlene F-C-F stretching vibration[J].Materials Review B:Research Papers,2014,28(12):95(in Chinese). 于宏伟,韩卫荣,刘磊,等.聚四氟乙烯F-C-F伸缩振动二维红外光谱研究[J].材料导报:研究篇,2014,28(12):95. 7 Rao Y, Qu J, Marinis T, et al. A precise numerical prediction of effective dielectric constant for polymer-ceramic composite based on effective-medium theory[J].IEEE Transactions on Components & Packaging Technologies,2001,23(4):680. 8 James N K, Jacob K S, Murali K P, et al. Ba(Mg1/3 Ta2/3 )O3, filled PTFE composites for microwave substrate applications[J].Materials Chemistry & Physics,2010,122(2-3):507. 9 Sasikala T S, Sebastian M T. Mechanical, thermal and microwave dielectric properties of Mg2SiO4, filled polyteterafluoroethylene composites[J].Ceramics International,2016,42(6):7551. 10 Wei Meiying, Wang Haifeng, Wang Juhua, et al. The preparation and properties of MoS2 filled PTFE composites materials[J].Mate-rials Review,2013,27(s1):59(in Chinese). 魏美英,汪海风,王菊华,等.MoS2填充PTFE复合材料的制备及性能研究[J].材料导报,2013,27(专辑21):59. 11 Yuan Y, Cui Y R, Wu K T, et al. TiO and SiO filled PTFE compo-sites for microwave substrate applications[J].Journal of Polymer Research,2014,21(2):380. 12 Zhang J, Liu J, Zhuang R, et al. Single MWNT-glass fiber as strain sensor and switch[J].Advanced Materials,2011,23(23):3392. 13 Pak S H, Caze C. Acid base interactions on interfacial adhesion and mechanical responses for glass fiber reinforced low density polyethylene[J].Journal of Applied Polymer Science,1997,65(1):143. 14 Thomas S, Raman S, Mohanan P, et al. Effect of coupling agent on the thermal and dielectric properties of PTFE/Sm2Si2O7,compo-sites[J].Composites Part A Applied Science & Manufacturing,2010,41(9):1148. 15 Chen Y C, Lin H C, Lee Y D. The effects of filler content and size on the properties of PTFE/SiO2, composites[J].Journal of Polymer Research,2003,10(4):247. 16 Harada M, Okamoto N, Ochi M. Fracture toughness and fracture mechanism of liquid-crystalline epoxy resins with different polydomain structures[J].Journal of Polymer Science Part B Polymer Phy-sics,2010,48(48):2337. 17 Zhang G, Sun Y, Niu R, et al. The strengthening mechanism of rare earth lanthanum oxide doped molybdenum alloys[J].Raremetal Materials & Engineering,2005,34(12):1926.