Ultraviolet Durability of TiO2 Coated Kevlar Fibres

摘要：

The effect of TiOi sol coating process on the ultraviolet durability of Kevlar fibres was investigated. TiO2 sol was prepared from Titanium Tetrabutoxide, HCI and acetic acid were used as a catalyst for the peptisation and complexing agent respectively. The molar fractions of Ti(OBu)4, acetic acid, HCI and deionised water in the prepared solution were 1:4:0.15:166. Dynamic light scattering result shows that after aging for 3 days, most of nano-TiO2 particles in the sol were about 15-45 nm in diameter. Furthermore, The obtained sol was coated on Kevlar fibre surface with the help of ultrasonication to form thin nano-TiO2 film, which has a thickness of about 300 nm observed under SEM. Results of mechanical measurement show that after exposing to UV light for 160 h, the fibres without TiO2 coating had deteriorated and turned to be powders, whereas 37.5 percent of strength and 41.2 percent of break extension still remained for the TiO2 coated fibre.

关键词： Kevlar TiO2 sol UV durability.

作者: CHEN Wei QIAN Xinming HE Xueqiu LIU Zhengyi LIU Jiping

作者单位: State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 1 School of Material science and engineering, Beijing Institute of Technology, Beijing 100081, China

会议类型: 国际会议

会议名称: The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 1865-1869

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）