Uhmwpe sheet related knowledge question and answer

1. Wear resistance test method  

Sand slurry wear method: sand slurry ratio of 2 water and 3 sand, specimen rotation speed of 900r/min, running for 7h.  

2. Operating temperature range  

It has good toughness and strength at -265℃~100℃ and -195℃.  

3. Why doesn't it absorb water?  

The ultra-high molecular chain is only composed of hydrocarbon, there is no polar group in the molecule, and the water absorption rate is very low  

4. Why are chemical corrosion resistant?  

There is no functional group in molecular structure, and almost no branch chain, double bond, and high crystallinity factor  

5. What is weatherability?  

Resistance to ultraviolet light.  

6. Why can't extrusion/injection molding be used for ultra high temperature?  

It has a low critical shear rate, and cracks occur because the melt is easy to crack during extrusion.  Perforation or delamination will be caused by jet flow when injection molding.