Synthesis of H₂Ti₂O₃·H₂O nanotubes and their effects on the flame retardancy of bamboo fiber/high-density polyethylene composites

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• 作者：Peng Fei^a ; ^b ; Xing Chen^b ; Hanguo Xiong^b ; ^{xionghanguo@163.com" class="auth_mail" title="E-mail the corresponding author} ; Zia-ud-Din^b ; Lei Chen^b ; Jie Cai^c ; ^{caijievip@hotmail.com" class="auth_mail" title="E-mail the corresponding author} ; ^{caijievip@whpu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：A. Polymer-matrix composites (PMCs) ; A. Natural fibers ; A. Nanocomposites ; B. Flame retardancy
• 刊名：Composites Part A: Applied Science and Manufacturing
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：90
• 期：Complete
• 页码：225-233
• 全文大小：3422 K

文摘

H₂Ti₂O₃·H₂O nanotubes (TNTs) were prepared through hydrothermal synthesis and dispersed in bamboo fiber/HDPE (BH) composites to improve the flame retardancy of the composites. TEM observation showed that TiO₂ particles were transformed into TNTs through hydrothermal treatment at 120 °C for 12 h in 8 M NaOH solution. Then, a cone calorimeter and a limiting oxygen index chamber were used to evaluate the effects of the TNTs on the flame retardancy of the BH composites. Results demonstrated that TNTs definitely improved the flame retardancy of BH composites by absorbing decomposition products from combustion due to its large specific area and tubular structure. Additionally, the TNTs reduced the free volume in the microzone, strengthened the molecular chain rigidity, and then contributed to the thermostability and flame retardancy of the BH composites.