PU muaj cov khoom zoo xws li tshuaj tiv thaiv, tensile lub zog, siab elasticity, siab load tsis kam, siab hnav tsis kam, muaj zog poob siab, tsim kua muag tsis kam, hluav taws xob tsis kam, siab zog, siab load-bearing thiab poob siab absorbing. Nws tuaj yeem tswj tau siab elasticity nyob rau hauv ntau yam hardness.
