一种环状磷酸酯的合成及其阻燃性能测定  

Synthesis and Flame Retardancy of a Cyclic Phosphate

作　　者：马作广 倪忠斌 东为富 陈明清 

机构地区：[1]江南大学化学与材料工程学院

出　　处：《精细化工》2018年第2期320-325,共6页Fine Chemicals

基　　金：国家自然科学基金(21571084)~~

摘　　要：以新戊二醇、三氯氧磷和1,1,1-三（4-羟基苯基）乙烷（THPE）为原料合成了一种环状磷酸酯阻燃剂1,1,1-三[4-（5,5-二甲基-1,3-二氧杂环己内磷酸酯基）苯基]乙烷（简称DOPC-THPE）,采用红外光谱、氢谱、碳谱、磷谱表征了其化学结构。将合成阻燃剂添加到聚丙烯（PP）中,通过极限氧指数（LOI）、垂直燃烧（UL-94）实验测定了材料的阻燃性能,同时利用热重分析（TGA）表征了阻燃剂和材料的热稳定性。结果表明,DOPC-THPE具有较好的热稳定性和成炭性,700℃残炭量达35.9%,添加量为30%（质量分数,以材料总质量计）时可使PP的LOI值从17.5%提高到25.0%,通过垂直燃烧V-1级。A cyclic phosphate flame retardant named as DOPC-THPE was synthesized with neopentyl glycol, phosphorus oxychloride and 1,1,1-tris （4-hydroxyphenyl） ethane （ THPE ） as raw materials. The chemical structure of DOPC-THPE was identified by means of FI＇IR, t HNMR, 13 CNMR and 31PNMR. DOPC- THPE was then applied in polypropylene （PP）, and the flame retardancy of the resulting composite material was determined by limiting oxygen index （ LOI ） measurements and vertical （UL-94） tests. Meanwhile, the thermal stability of DOPC-THPE and composite material was characterized by thermogravimetric analysis （TGA）. The results indicated that DOPC-THPE had good charring performance and thermal stability ,with a residual char of 35. 9% at 700 ℃. The composite containing 30% DOPC-THPE could achieve UL-94 V-1 rating with a LOI value of 25. 0% ,higher than that of pure PP（ 17. 5% ）.

关 键 词：环状磷酸酯 热稳定性 阻燃性能 聚丙烯 橡塑助剂 

分 类 号：O627.51[理学—有机化学] TQ314.24[理学—化学]