文献类型：期刊文献

英文题名：Efficient synthesis of phosphorus containing melamine salt for enhancing flame retardancy of poly(lactic acid)/polyamide 11 blends

作者：Jiang, Peng[1] Chang, Liang[1,3] Pan, Fangya[1] Jia, Hongyu[1] Chen, Zhilin[1,2] Liang, Shanqing[1]

第一作者：姜鹏

通信作者：Chang, L[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing, Peoples R China;[2]Dehua TB New Decorat Mat Co Ltd, Huzhou, Peoples R China;[3]Chinese Acad Forestry, Res Inst Wood Ind, Xiangshan Rd, Beijing 100091, Peoples R China

年份：2023

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20234615056870);Scopus(收录号：2-s2.0-85176602128);WOS:【SCI-EXPANDED(收录号:WOS:001103034200001)】；

基金：The authors wish to thank the Fundamental Research Funds of CAF (CAFYBB2021ZB004), the National Natural Science Foundation of China, China (No. 32271788), and the South Taihu Elite Plan Project [2022] No. 1, Huzhou, Zhejiang Province for their financial contributions.

语种：英文

外文关键词：flame retardant; nitrogen-containing; phosphorus-containing; poly lactic acid/polyamide 11 blends; synergistic effect

摘要：A tetrakis (melamine)-1-hydroxyethylidene-1,1-diphosphonic acid salt (EA-MEL) was synthesized by a straightforward acid-base neutralization reaction between 1-hydroxyethylidene-1,1-diphosphonic acid (EA) and melamine (MEL). This compound, which contains phosphorus and nitrogen elements, exhibits a 40% carbon residue at a temperature of 800 degrees C. When combined with diethyl aluminium hypophosphite (OP1230) as a flame-retardant composite in polylactic acid (PLA)/polyamide 11 blends through melt blending, a synergistic effect between the two flame retardants is observed. Consequently, the limiting oxygen index value significantly increases to 34.3, showcasing a remarkable 64.6% improvement. Additionally, the material achieves a V-0 rating according to UL-94 standards, and the peak heat release rate drops to 269 kW center dot m(-2) with the addition of just 5 wt% EA-MEL. These results demonstrate that EA-MEL and OP1230 contribute to the generation of phosphoric acid derivatives and the formation of a crosslinked (-P-N-)(n) or (-P-O-N-)n network. This network enables the formation of a complete, compact, and expanded char residue, effectively isolating heat and oxygen.