摘要
以聚氨酯/聚氯乙烯(PU/PVC)共混物为基质,添加了多壁碳纳米管(MWCNT),采用湿法相转换法制备了PU/PVC共混膜。通过扫描电子显微镜(SEM)、透湿导热装置、接触角测量仪和拉伸试验对共混膜进行测试,研究了MWCNT对PU/PVC共混膜的断面形态、导热效率、亲水性及力学性能的影响。实验结果表明:添加MWCNT可以显著改善膜的孔结构,大孔数量明显减少,界面微孔数量显著增多,孔径变小,当MWCNT用量在一定范围内,导热效率、接触角、拉伸强度和断裂伸长率均有所提高。当MWCNT的用量为0.4%时,导热效率由25.18%提高到30.41%、接触角由68.50°增加到76.42°、拉伸强度由2.09 MPa增加到7.47 MPa、断裂伸长率由411%增加到469%,综合性能最优。
With the phase conversion method, MWCNT filling PU/PVC composite membrane was prepared. The effects such as cross section morphology, thermal conductivity, hydrophilicity and mechanical properties of MWCNT on PU/PVC composite membrane were examined by scanning electron microscopy （SEM） , moisture permeation and thermal conductivity, contact angle measuring instrument and tensile test. The results showed that the addition of MWCNT could significantly improve the membrane pore structure, the number of large pores was obviously reduced, the number of interfacial micropores was increased and the pore size became smaller. The thermal conductivity, contact angle, tensile strength and elongation at break were increased when the amount of MWCNT was in a certain range. When the amount of MWCNT was 0.4% , the thermal conductivity increased from 25. 18% to 30.41% , the contact angle increased from 68.50°to 76.42°, the tensile strength increased from 2.09 MPa to 7.47 MPa and the elongation at break increased from 411% to 469% , the composite membrane optimal overall oerformance.
作者
刘美惠
沈惠玲
王双双
LIU Meihui;SHEN Huiling;WANG Shuangshuang(College of Chemical Engineering and Material Science,Tianjin University of Science and Technology,Tianjin 300457,China)
出处
《塑料》
CAS
CSCD
北大核心
2018年第4期5-7,12,共4页
Plastics
关键词
聚氨酯
聚氯乙烯
多壁碳纳米管
共混膜
相转换
polyurethane
polyvinyl chloride
multi-walled carbon nanotubea
composite membranes
phase inversion
