TY - GEN
T1 - Effect of weld line defects on electrical conductivity of injection molded parts with various carbon nano fibers/PP composites
AU - Xie, Lei
AU - Tian, Xiaoyong
AU - Wu, Wangqing
AU - Li, Dichen
AU - Jiang, Bingyan
AU - Ziegmann, Gerhard
PY - 2011
Y1 - 2011
N2 - As well known, the weld line defect in injection molding process results detrimental to mechanical properties and surface quality. However, the electrical conductivity of the injection molded part is influenced as well. In this study, in order to reveal the mechanism of the weld line affecting the electrical conductivity of injection molding parts, the conductive polymer composites with various carbon nanofibers filling contents were compounded. Those composites were formed as the tensile samples with and without weld line defects by injection molding process. According to the electrical resistance measurements for the samples, it can be found that at relative low filling content of 10wt%, the weld line contributes to increase the electrical conductivity of the injection molding parts due to its effect on nanofibers' orientation. However, when the filling content is higher than 20wt%, this effect is not significant any more.
AB - As well known, the weld line defect in injection molding process results detrimental to mechanical properties and surface quality. However, the electrical conductivity of the injection molded part is influenced as well. In this study, in order to reveal the mechanism of the weld line affecting the electrical conductivity of injection molding parts, the conductive polymer composites with various carbon nanofibers filling contents were compounded. Those composites were formed as the tensile samples with and without weld line defects by injection molding process. According to the electrical resistance measurements for the samples, it can be found that at relative low filling content of 10wt%, the weld line contributes to increase the electrical conductivity of the injection molding parts due to its effect on nanofibers' orientation. However, when the filling content is higher than 20wt%, this effect is not significant any more.
KW - Carbon nanofibers
KW - Electrical conductivity
KW - Injection molding
KW - Polypropylene
KW - Weld line
UR - https://www.scopus.com/pages/publications/79958262639
U2 - 10.4028/www.scientific.net/AMR.233-235.1136
DO - 10.4028/www.scientific.net/AMR.233-235.1136
M3 - 会议稿件
AN - SCOPUS:79958262639
SN - 9783037851197
T3 - Advanced Materials Research
SP - 1136
EP - 1140
BT - Fundamental of Chemical Engineering
T2 - 2011 International Conference on Chemical Engineering and Advanced Materials, CEAM 2011
Y2 - 28 May 2011 through 30 May 2011
ER -