新型低成本耐老化聚氨酯弹性体的研究  

Preparation of new wet-heat aging stability polyurethane elastomer

作　　者：翟文[1] 陈强[1] 甄建军[1] 胡文阁 唐志勇[1] 

机构地区：[1]中国兵器工业集团第五三研究所,山东济南250031 [2]济南普恩聚氨酯有限公司,山东济南250032

出　　处：《弹性体》2013年第4期12-15,共4页China Elastomerics

基　　金：型号工程配套项目

摘　　要：以酯基间有2~6个碳原子的聚酯二元醇（CMA-24、CMA-44、CMA-254、CMA-66）、甲苯二异氰酸酯和扩链剂3,5-二甲硫基甲苯二胺（DMTDA）为原材料,通过预聚体法制备了一种耐水解聚酯型聚氨酯弹性体。探讨了水解稳定剂、防酶剂、紫外线吸收剂和抗氧剂等助剂对聚氨酯弹性体性能的影响,测定了耐水解聚酯型聚氨酯弹性体的耐湿热老化和耐海水性能。结果表明,通过添加适量的水解稳定剂、防霉剂、紫外线吸收剂和抗氧剂可大幅度提高聚酯型聚氨酯弹性体的耐湿热老化和耐紫外线老化性能,特别是耐海水性能较传统的聚酯型聚氨酯弹性体提高了5倍以上。Wet and heat ageing resistance（PU）polyurethane elastomer was synthesized from polyester polyol with six atoms of carbon within the ester group,2,4-tolylene diisocyanate（TDI）and chain extender（DMTDA）by prepolymerizing,with adding hydrolytic stabilizers,etc.The effects of the hydrolytic stabilizers,antifungal agents,ultraviolet stabilizers and anti-oxidant on the properties of the PUR elastomer were discussed.Its properties of resistance to humidity heat,ultraviolet radiation and sea water were determinated.The results showed that,the PUR elastomer＇s properties of resistance to humidity heat and ultraviolet radiation were greatly enhanced by adding the appropriate amount of hydrolytic stabilizers,antifungal agents,ultraviolet stabilizers and anti-oxidant.Especially the PUR elastomer＇s property of resistance to sea water was 2times more than the traditional elastomer.

关 键 词：聚氨酯弹性体 老化 降解 

分 类 号：TQ334.1[化学工程—橡胶工业]