微烟气量阻燃型聚氨酯弹性体的合成及性能研究  

Preparation and Properties of Low Smoke-Flame Retardant Polyurethane Elastomer

作　　者：马慧[1] 刘玉存[1] 郭嘉昒[1,2] 荆苏明[1] 钟伦超[3] 何伟明[2] 

机构地区：[1]中北大学化工与环境学院,山西太原030051 [2]四川科技职工大学职业安全健康与环保工程系,四川成都610101 [3]北京理工大学机电学院,北京100081

出　　处：《橡胶工业》2015年第1期31-35,共5页China Rubber Industry

基　　金：中北大学博士创新基金资助项目(DRIF1310.13X);四川科技职工大学科技研发计划项目(SCSUTR20130503X)

摘　　要：通过正交试验优化预聚体各组分配比和调整阻燃剂、抑烟剂和成炭剂的用量合成聚氨酯(PU)弹性体,并对其物理性能和燃烧性能进行研究。结果表明:优化配方制备的PU弹性体拉伸强度达3.99 MPa,拉断伸长率达800%,具有良好的成炭性和显著的绝热效果,极限氧指数达37.4%,线烧蚀速率为0.35mm·s-1,且在燃烧时低烟、微烟甚至几乎达到无烟。In this study,polyurethane elastomer （PU） was prepared by using orthogonal experimental design to optimize the ratio of pre-polymer components,the addition levels of flame retardant,smoke-suppression agent and charring agent.The physical properties and combustion performance of the PU elastomer were investigated.The results showed that,the tensile strength of the optimized PU elastomer reached 3.99 MPa,and the elongation at break was 800％.It possessed good charring effect and remarkable heat insulating effect.The limiting oxygen index reached 37.4 ％,the ablation rate was 0.35 mm · s-1,and in the combustion test,the elastomer showed very little smoke or even no smoke.

关 键 词：聚氨酯弹性体 合成 微烟 物理性能 燃烧性能 正交试验设计 

分 类 号：TQ334.1[化学工程—橡胶工业]