磷酸二氢铵阻燃PTMG/TDI体系聚氨酯弹性体制备及性能研究  

Study on the Preparation and Properties of Polyurethane Elasticity in PTMG/TDI System Flame-retardant with Ammonium Dihydrogen Phosphate

作　　者：刘显勇 刘羽玲 杨东方 徐文明 谢冠春 Liu Xianyong;Liu Yuling;Yang Dongfang;Xu Wenming;Xie Guanchun(Guangdong Sinoplast Advanced Plastic Co.,Ltd.,Dongguan 523860,China)

机构地区：[1]广东中塑新材料股份有限公司,广东东莞523860

出　　处：《山东化工》2023年第22期60-62,共3页Shandong Chemical Industry

摘　　要：将磷酸二氢铵(ADP)作为阻燃剂,以聚四氢呋喃醚(PTMG)、甲苯二异氰酸酯(TDI)、4,4'-亚甲基二(2-氯苯胺)(MOCA)为主要原料,通过预聚体法合成了阻燃剂含量不同的聚氨酯弹性体。讨论了ADP含量对PTMG/TDI体系聚氨酯弹性体的阻燃性及力学性能的影响。结果表明:ADP对聚氨酯弹性体的力学性能影响较大,随着ADP用量的增多,拉伸强度、断裂伸长率、撕裂强度以及耐磨性能下降;聚氨酯弹性体的阻燃性能提高,氧指数(LOI)随着ADP含量的增多而增大,阻燃等级从UL-94 V-2级达到V-0级。With ammonium dihydrogen phosphate(ADP)as flame retardant and polytetrahydrofuran ether(PTMG),toluene diisocyanate(TDI),4,4'-methylenebis(2-chloroaniline)(MOCA)as main raw materials,polyurethane elastomers with different flame retardant contents were synthesized by prepolymer method.The influence of ADP content on the flame retardancy and mechanical properties of PTMG/TDI polyurethane elastomer was discussed.The results showed that ADP had a great influence on the mechanical properties of polyurethane elastomer.With the increase of ADP content,the tensile strength,elongation at break,tear strength and wear resistance decreased;The flame retardancy of the polyurethane elastomer was improved,and the oxygen index(LOI)increased with the increase of ADP content,and the flame retardancy level is increased from UL-94 V-2 level to V-0 level.

关 键 词：磷酸二氢铵 聚氨酯弹性体 预聚体法 阻燃性 氧指数 

分 类 号：TQ334.1[化学工程—橡胶工业]