聚氨酯/异氰酸酯改性氧化石墨烯泡沫材料的制备及其性能研究  

Preparation and Properties of Polyurethane/Isocyanate Modified Oxidized Graphene Foam

作　　者：谢毓 杜中杰[1] 邹威[1] 王洪 张晨[1] 

机构地区：[1]北京化工大学材料科学与工程学院,碳纤维及功能高分子教育部重点实验室,北京100029

出　　处：《中国塑料》2017年第10期20-25,共6页China Plastics

摘　　要：将氧化石墨烯引入聚氨酯基体,以水为发泡剂,制备了聚氨酯复合泡沫材料。首先将Hummers法制备的氧化石墨烯与异佛尔酮二异氰酸酯反应,得到表面带有异氰酸酯基团的改性氧化石墨烯(IPDI/GO);然后分别将未改性的和异氰酸酯改性的氧化石墨烯加入到聚氨酯中,以水为发泡剂,制备了聚氨酯/氧化石墨烯泡沫材料,研究了氧化石墨烯的引入对聚氨酯泡沫材料的泡孔结构、导热性能及力学性能的影响。结果表明,当体系中加入IPDI/GO后,随着其含量的增加,会产生少量大孔径泡孔;聚氨酯泡沫材料的玻璃化转变温度明显提高;但其对热导率的影响并不显著;压缩模量在其添加量为0.5%时达到最大值。In this work, graphene oxide （GO） was tirst prepared by the Hummers method and thenwas surface-modified with isophorone diisocyanate to obtain the isocyanate-modified GO. The polyurethane-matrix composite foams were prepared by mcorporaton of the isocyanate-modified GO. Effect of the isocyanate-modified GO on porous structure, thermal conductivity andmechanical properties of the composite foam were investigated. The composite foams achieved the maximum compressive strength and compressive modulus wth the addition of only 0. 5 % isocyanate-modifiedGO. However, there s no distinct influence on thermal conductivity observed. Moreover, the composite foams also gained an improvement in glass transition temperature andenergy storage modulus.

关 键 词：氧化石墨烯 异佛尔酮二异氰酸酯 聚氨酯 玻璃化转变温度 导热 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ328.3[化学工程—合成树脂塑料工业]