Views:0 Author:Site Editor Publish Time: 2020-08-19 Origin:Site
Waterproof silver PE tarpaulin has excellent molding and processing properties and good fluidity. What is the molding process when waterproof silver PE tarpaulin manufacturers use this material for processing?
First of all, we must know that the determination of the forming temperature of the waterproof silver PE tarpaulin mainly depends on the molecular weight, density and crystallinity. Although the forming and processing temperature of the waterproof silver PE tarpaulin is not high, the heat capacity of the PE melt is large, and its cooling rate is The quality and performance of the board have a great impact. In the molten state, PE has a tendency to oxidize, so in the molding process, the contact between the melt and the air and the residence time at high temperatures should be minimized. In addition, the melt of PE is sensitive to the shear rate. As the shear rate increases, the melt viscosity decreases more.
In addition, the crystallinity of the waterproof silver PE tarpaulin depends on the control of the cooling rate during the molding process. Due to crystallization, the cooling and crystallization are uniform.