
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。
关键词:磷酸二氢铵,聚氨酯弹性体,预聚体法,阻燃性,氧指数
Liu Xianyong, Liu Yuling, Yang Dongfang, Xu Wenming, Xie Guanchun
(Guangdong Sinoplast Advanced Plastic Co. Ltd., Dongguan 523860,China)
Abstract: 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
Key words:ammonium dihydrogen phosphate, polyurethane elastomer, prepolymer method, flame retardant, oxygen index.
通讯作者:刘显勇,硕士,主要研究方向为高分子共混改性 E-mail: liuxy@sinoplast.com.cn
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