低分子量聚异戊二烯液体橡胶的结构表征及燃烧特性  

Structural Characterization and Combustion Characteristics of Low Molecular Weight Polyisoprene Liquid Rubber

作　　者：董瑞宝 李志波[2] 王文玉 李彦辉 张彩霞 潘广勤[1] Ruibao Dong;Zhibo Li;Wenyu Wang;Yanhui Li;Caixia Zhang;Guangqin Pan(College of Enoironment and Safety Engineering,Qingdao University of Science&.Technology;College of Polymer Science and Engineering,Qingdao University of Science&Technology,Qingdao 266061,China)

机构地区：[1]青岛科技大学环境与安全工程学院 [2]青岛科技大学高分子科学与工程学院,山东青岛266061

出　　处：《高分子材料科学与工程》2020年第11期76-79,85,共5页Polymer Materials Science & Engineering

基　　金：双一流建设资助课题(02002702002);科研启动资助课题(010022685)。

摘　　要：以正丁基锂为引发剂,四氢呋喃(THF)为调节剂,通过核磁共振技术(NMR)研究了不同溶液体系对低分子量聚异戊二烯(LIR)结构的影响及LIR液体橡胶的燃烧行为。结果表明,在40℃,反应时间为4 h,异戊二烯单体浓度为30%的实验条件下,THF能够有效地调控LIR的结构,且能够稳定合成高cis-1,4-结构含量的低分子量液体异戊二烯橡胶。以微型量热仪(MCC)等研究了不同构型LIR的燃烧特性,LIR的3,4-结构能够提高LIR的燃烧性能,结果显示,3,4-结构含量每增加5%,热释放速率(HRR)值升高36 W/g。Using n-butyllithium as initiator and tetrahydrofuran(THF)as regulator,the structural characterization was performed by nuclear magnetic resonance(NMR)to study the effects of different solution systems on the structure of low molecular weight polyisoprene(LIR)and the burning behavior of LIR liquid rubber.The results show that under the experimental conditions of 40℃,reaction time of 4 h,and isoprene monomer concentration of 30%,THF can effectively regulate the structure of LIR,and the high cis-1,4-structure content and low molecular liquid isoprene rubber was stably synthesized.The combustion characteristics of different configurations of LIR were studied by microcalorimeter(MCC).The 3,4-structure of LIR can improve the combustion performance of LIR.The results show that for every 5%increase in 3,4-structure content,the heat release rate(HRR)value is increased by 36 W/g.

关 键 词：低分子量 聚异戊二烯 液体橡胶 核磁共振氢谱 燃烧性 

分 类 号：TQ333.3[化学工程—橡胶工业]