Mechanism of surface modification for sericite

作者：Gao Huimin^*; Yuan Jizu; Wang Xiangrong; Guan Junfang; Zhang Lingyan; Jing Zhengqiang; Mao Yilin

来源：Journal of Wuhan University of Technology-Materials Science Edition, 2007, 22(3): 470-472.

DOI：10.1007/s11595-006-3470-y

• sericite
• surface modification
• ABS plastic

Surface modification of sericite by wet method was conducted with the addition of 1.0 % (w/w) silane. The resulting wetting contact angle and activity ratio of sericite were 130 degrees and 98% respectively. Good pre-evaluation indexes of oil value (40.8%) and dispersivity (14.0 mL) were obtained. When 30 % of sericite was filled into acrylonitrile butadiene styrene(ABS) plastic, the bending strength and tensile strength of the composite material were reduced by 7% and 14.3% in comparison to those of pure ABS plastic, while the rigidity was increased by 3 times, and the impact strength and breaking elongation were reduced significantly. The mechanism of surface modification was investigated and the configuration of silane coupling agent on the surface of sericite was given. Infrared (IR) spectroscopic analysis indicates that the adsorption of silane on the surface of sericite belongs to chemical adsorption.

• 出版日期2007-9
• 单位武汉理工大学