含磷高分子阻燃剂HMPP的合成及应用研究

Synthesis and application of phosphoric polymer HMPP flame retardant

以三氯氧磷、乙醇及1,4-丁二醇为主要原料,二氯乙烷为溶剂,辛酸亚锡为催化剂,三聚氰胺为缚酸剂,制备了含磷高分子阻燃剂HMPP。研究了主要反应因素,确定适宜的反应条件为n(三氯氧磷)∶n(乙醇)∶n(1,4-丁二醇)为1∶1∶1,0℃滴加入乙醇,反应依次在25、45、65℃分别保温反应2、2、1 h。反应产率94.2%,产物数均分子量19 769,多分散指数1.88。用FTIR、1H-NMR和GPC表征了产物结构。在聚氨酯软质泡沫中应用表明HMPP具有良好的阻燃性。

HMPP,a kind of phosphoric polymer flame retardant,was synthesized using phosphorus oxychloride,ethanol and 1,4-butanediol as precursors,dichloroethane as solvent,stannous octoate as catalyst and melamine as the acid binding agent.The main reaction factors were studied,and the proper reaction conditions were confirmed： the molar ratio of phosphorus oxychloride,ethanol and 1,4-butanediol was 1∶1∶1,and the reaction time was 2、2 and 1 h at 25、45 and 65 ℃ accordingly after dropping ethanol at 0 ℃.The yield ratio of reaction was 94.2%.MnGPC and PDI of product were 19 769,1.88 respectively.FTIR、1H-NMR and GPC were used to characterize structure of the final product.The application results of product in flexible PU foams shows good flame retardancy.