低温发泡剂OBSH与BK并用活化机理及其对NBR/PVC材料性能的影响  

Combined activation mechanism of low temperature blowing agent OBSH and BK and its effect on properties of NBR/PVC

作　　者：张珊珊 胡小侠[2] 何兵 高贺勇 高贺昌 张建松 卞长健 ZHANG Shanshan;HU Xiaoxia;HE Bing;GAO Heyong;GAO Hechang;ZHANG Jiansong;BIAN Changjian(Huamei Energy-saving Technology Group Co.,Ltd,Langfang 065903,China;Analysis and Testing Center of Tianjin University,Tianjin 300072,China)

机构地区：[1]华美节能科技集团有限公司,河北廊坊065903 [2]天津大学分析测试中心,天津300072

出　　处：《弹性体》2023年第3期58-63,共6页China Elastomerics

基　　金：河北省科技成果转化专项(22281204Z)。

摘　　要：研究了发泡剂4,4-氧代双苯磺酰肼(OBSH)与尿素脂(BK)的相互促进机理,以及两者的用量及质量比对丁腈橡胶/聚氯乙烯(NBR/PVC)海绵橡胶发泡材料泡孔结构及性能的影响。结果表明,发泡剂OBSH和尿素脂BK并用能明显改善发泡剂OBSH的分解历程,将发泡剂OBSH的最快分解温度降低到149.2℃。当发泡剂OBSH与BK质量比为2∶1时,发泡材料的密度最低,真空吸水率最低,泡孔结构最均匀,发泡效果最好。The interaction mechanism of blowing agent 4,4-oxo diphenylsulfonyl hydrazine(OBSH)and urea resin(BK)and the effect of the amount and mass ratio of the two on the pores structure and properties of NBR/PVC sponge rubber foams were studied.The results showed that the combination of blowing agent OBSH and urea resin BK could obviously improve the decomposition process of blowing agent OBSH and reduce the fastest decomposition temperature of OBSH to 149.2℃.When the mass ratio of blowing agent OBSH/BK was 2∶1,the foaming materials had the lowest density and vacuum water absorption,the most uniform pore structure,and the best foaming effect.

关 键 词：丁腈橡胶/聚氯乙烯 4 4-氧化双苯磺酰肼发泡剂 尿素脂 分解特性 泡孔结构 

分 类 号：TQ333.7[化学工程—橡胶工业]