氨基改性碳纳米管的制备及对聚氨酯泡沫材料的影响  

Effect of Amino-Modified Carbon Nanotubes on the Pore Structure of Polyurethane Foams

作　　者：侯明月[1] 李昂[1] 邹威[1] 励杭泉[1] 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：《高分子材料科学与工程》2016年第1期179-183,190,共6页Polymer Materials Science & Engineering

基　　金：第13届中日国际科技合作项目资助(2010DFA52070)

摘　　要：在碳纳米管表面引入大量氨基后,将其加入水为发泡剂的聚氨酯发泡体系,研究了碳纳米管对聚氨酯泡沫泡孔结构和力学性能的影响。实验结果表明,氨基表面改性碳纳米管的引入有助于提高聚氨酯泡沫孔壁结构的完整性,并且泡孔分布更加均匀。随着体系中碳纳米管含量的增加,泡沫孔径尺寸先减小后增大,当填充量为0.75%时,泡沫材料具有最小平均孔径(0.23mm)。扫描电子显微镜观察发现该条件下泡孔分布均匀,结构最为完整。同时,材料的力学性能也表现出相同的规律,当碳纳米管含量为0.75%时,材料具有最大压缩强度和压缩模量,分别为0.14 MPa和2.09 MPa,与纯聚氨酯的泡沫材料相比分别提高了100%和161%。The surface modification of multi-walled carbon nanotubes（ MWCNTs-NH2） was achieved and then introduce into polyurethane foams（ PUFs）,which resulted in the improved pore structure and mechanical properties. It is shown that PUFs have a perfect pore structure and a uniform pore distribution when MWCNTs-NH2 is added. With the increasing amounts of MWCNTs-NH2,the pore size of PUFs decreases in the beginning and then increases,with the smallest average size of 0. 23 nm as the content reaches 0. 75%. In this instance,the PUFs have a perfect wall structure and uniform pore distribution,and the mechanical properties of sample exhibit the same trend corresponding to SEM observations. The PUFs exhibit the maximum compressive strength and modulus of 0. 14 MPa and 2. 09 MPa,which are increased by 100% and 161% compared with pure PUFs,respectively.

关 键 词：聚氨酯泡沫 氨基改性碳纳米管 泡孔结构 力学性能 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]