TY - JOUR
T1 - Experimental and theoretical analysis of pulling force in pultrusion and resin injection pultrusion (RIP) - Part I
T2 - Experimental
AU - Li, Shoujie
AU - Xu, Liqun
AU - Ding, Zhongman
AU - Lee, L. James
AU - Engelen, Herbert
PY - 2003
Y1 - 2003
N2 - Pulling force is the summation of resistance forces along a pultrusion die. Its mechanism is complicated because the impregnated resin inside the compressed fiber reinforcement changes from a liquid to a gel, and finally to a solid in the die. Two methods, a 'mat tracer' method and a 'short die length' method, were used to determine the pulling force distribution. Results show that the downstream part of the die contributes little to the pulling force. In order to predict the resistance force in both the injection die and the heating die, two models were developed in this study. A friction measurement device was designed to measure the friction coefficient between the composite and the mold surface. The effect of process variables, such as temperature, resin conversion, normal force, and line speed, on the friction coefficient was investigated and a friction coefficient model was proposed based on the experimental results. A volume change model of vinylester resin was also developed to predict the thermal expansion-polymerization shrinkage during curing. The parameters of the model were determined by dilatometry, thermomechanical analysis (TMA) and differential scanning calorimetry (DSC).
AB - Pulling force is the summation of resistance forces along a pultrusion die. Its mechanism is complicated because the impregnated resin inside the compressed fiber reinforcement changes from a liquid to a gel, and finally to a solid in the die. Two methods, a 'mat tracer' method and a 'short die length' method, were used to determine the pulling force distribution. Results show that the downstream part of the die contributes little to the pulling force. In order to predict the resistance force in both the injection die and the heating die, two models were developed in this study. A friction measurement device was designed to measure the friction coefficient between the composite and the mold surface. The effect of process variables, such as temperature, resin conversion, normal force, and line speed, on the friction coefficient was investigated and a friction coefficient model was proposed based on the experimental results. A volume change model of vinylester resin was also developed to predict the thermal expansion-polymerization shrinkage during curing. The parameters of the model were determined by dilatometry, thermomechanical analysis (TMA) and differential scanning calorimetry (DSC).
KW - 'Mat tracer' method
KW - 'Short die length' method
KW - Friction coefficient
KW - Polymerization shrinkage
KW - Pulling force
KW - Pultrusion
KW - Resin injection pultrusion
KW - Thermal expansion coefficient
UR - http://www.scopus.com/inward/record.url?scp=0037215769&partnerID=8YFLogxK
U2 - 10.1106/002199803028676
DO - 10.1106/002199803028676
M3 - Article
AN - SCOPUS:0037215769
SN - 0021-9983
VL - 37
SP - 163
EP - 189
JO - Journal of Composite Materials
JF - Journal of Composite Materials
IS - 2
ER -