超低导快熟化组合聚醚及其性能研究  

Study on ultra-low conductivity and fast curing combined polyethers and theirperformance

作　　者：李明友 朱光宁 李海东 Li Mingyou;Zhu Guangning;Li Haidong(Shandong INOV New Meterials Co.,Ltd.,Zibo 255400,China)

机构地区：[1]山东一诺威新材料有限公司,山东淄博255400

出　　处：《化学推进剂与高分子材料》2024年第2期64-67,共4页Chemical Propellants & Polymeric Materials

摘　　要：通过对聚醚多元醇、泡沫稳定剂、催化剂的试验筛选,使用戊烷/HFC–245fa/R600发泡体系,高互溶性聚醚多元醇R6001C搭配OTDA(邻甲苯二胺)聚醚多元醇R4400T及山梨醇聚醚多元醇R6048等,选用流动性和泡沫表面较好的泡沫稳定剂,搭配不同催化剂体系,实现了泡沫的快速熟化和超低导热系数。通过兰芝模和扫描电镜验证泡孔结构及制品表面缺陷,确定R600低沸点发泡剂的质量分数在1.5%~2.0%。使用该发泡体系的超低导快熟化组合聚醚产品制备工艺简单、安全环保,制得的组合聚醚体系稳定性好,发泡成型速度快,泡沫制品密度28~29 kg/m^(3)、导热系数0.018 3 W/(m·K),实现了生产效率和经济效益双提升。By experimental screening of polyether polyol,foam stabilizer and catalyst,fast curing and ultra-low thermal conductivity coefficient of the foam were achieved by using pentane/HFC-245fa/R600 foaming system,highly miscible polyether polyol R6001C collocating OTDA(ortho toluenediamine)polyether polyol R4400T,sorbitol-type polyether polyol R6048 and so on,selecting foaming stabilizers with good fluidity and foam surface,and matching with different catalyst systems.The pore structure and product surface defects were verified by Lanze mold and scanning electron microscope,and the mass fraction of R600 low boiling point blowing agent was determined to be in the range of 1.5%~2.0%.The preparation process of ultra-low conductivity fast curing combined polyether products using this foaming system is simple,safe and environment-friendly,and the prepared combined polyether system has good stability,fast foaming and molding speed,with a density of 28~29 kg/m^(3) and a thermal conductivity coefficient of 0.0183 W/(m.K)which realizes a dual enhancement of the production efficiency and economic benefits.

关 键 词：超低导 硬泡组合聚醚 R600 快熟化 低密度 

分 类 号：TQ326.5[化学工程—合成树脂塑料工业]