A facile method for the preparation of novel fire-retardant layered double hydroxide and its application as nanofiller in UP

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• 作者：Jing Cai ; Hui-Min Heng ; Xiao-Ping Hu ; ^{huxiaoping@swust.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Qi-Kui Xu ; Fei Miao
• 关键词：Layered double hydroxide ; Nanocomposites ; Hydrothermal method ; Flame retardant modification ; Combustion behaviors ; Mechanical property
• 刊名：Polymer Degradation and Stability
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：126
• 期：Complete
• 页码：47-57
• 全文大小：3364 K

文摘

A novel functionalized layered double hydroxide (SPDP-LDH) has been prepared through hydrothermal method by co-precipitation method based on spirocyclic pentaerythritol bisphosphorate disphosphoryl chlorine and Mg–Al-LDH (N-LDH). LDHs were homogenously mixed with unsaturated polyester resin (UP) to manufacture the final nanocomposites (LDH/UP). Various measurement methods have been employed to characterize the structure, morphology, thermal stability and combustible properties of intercalated LDH and its hybrid composites. These data revealed that the majority of N-LDH was intercalated by SPDP, and nano-sized particles of SPDP-LDH were achieved. SPDP-LDH had a better dispersion in UP compared with N-LDH. The TG data showed that the initial decomposition temperatures were delayed about 40 °C and 50 °C for 5wt % and 10wt %SPDP-LDH/UP nanocomposites respectively. The CC data presented that higher fire retardancy can also be obtained for SPDP-LDH/UP system based on the decreasing value of HRR and THR. Compared with N-LDH/UP system, the SPDP-LDH/UP nanocomposites presented an improvement in mechanical properties. In particular, a progressive increase 23.51% in flexural strength can be observed at 5 wt% loading of SPDP-LDH.