Effect of pulling speed on the sizes of the liquid, gel and solid zone during thermoset pultrusion

摘要

The temperature and the degree of cure distributions inside a thermoset composite profile during the pultrusion process are calculated numerically using the finite difference method. The degrees of cure at the beginning of the gel and the solid zones i.eα_(GL) andα_(GS) are determined using appropriate experimental techniques. These results enabled us to predict the location and the size of the liquid, gel and solid zones inside a pultrusion die. It is found that the pulling speed affects the size and the position of each zone considerably. The relationships between the sizes of these zones and the pull-force is discussed.