Sun Junzhuo, Zhang Daohai, Wei Ke, Tan Fang, He Min, Bao Dongmei, Qin Shuhao
School of Chemical Engineering of Guizhou Minzu University, Guiyang, China.
Polymer Composites Engineering Research Center of Guizhou Minzu University, Guiyang, China.
Front Chem. 2022 Jul 18;10:956322. doi: 10.3389/fchem.2022.956322. eCollection 2022.
The conjugated flame retardants have rarely been studied. A conjugate flame-retardant 4, 4'-{1″, 4″-phenylene-bis [amino- (10‴-oxy10‴-hydro-9‴-hydrogen- 10‴λ-phosphaphenanthrene-10″-yl)-methyl]}-diphenol (P-PPD-Ph) was synthesized and added into the polylactic acid (PLA) matrix. The P-PPD-Ph-conjugated flame-retardant structure was tested by FTIR, H, and P NMR analysis. The thermal and rheological properties of PLA/P-PPD-PH-conjugated flame-retardant composites were investigated. The results showed that P-PPD-Ph-conjugated flame retardant affects PLA/P-PPD-PH-conjugated flame-retardant composites for promoting the formation of a carbon layer when the P-PPD-Ph-conjugated flame-retardant content was 15% and the residual carbon ratio for PLA/P-PPD-PH-conjugated flame-retardant composites increased by 4.2%.
共轭阻燃剂很少被研究。合成了一种共轭阻燃剂4,4'-{1″,4″-亚苯基-双[氨基-(10‴-氧代-10‴-氢-9‴-氢-10‴λ-磷杂菲-10″-基)-甲基]}-二苯酚（P-PPD-Ph）并将其添加到聚乳酸（PLA）基体中。通过傅里叶变换红外光谱（FTIR）、氢核磁共振（H NMR）和磷核磁共振（P NMR）分析对P-PPD-Ph共轭阻燃剂的结构进行了测试。研究了PLA/P-PPD-PH共轭阻燃剂复合材料的热性能和流变性能。结果表明，当P-PPD-Ph共轭阻燃剂含量为15%时，P-PPD-Ph共轭阻燃剂对PLA/P-PPD-PH共轭阻燃剂复合材料促进炭层的形成有影响，PLA/P-PPD-PH共轭阻燃剂复合材料的残炭率提高了4.2%。
