Polyurethane ua npuas ncauj yog tsim los ntawm polymerizing thiab foaming isocyanate thiab hydroxyl compounds.
Raws li nws hardness, nws yuav muab faib ua ob pawg:
mos thiab tawv, nrog mos yog lub ntsiab ntau yam.
Feem ntau hais lus, nws muaj zoo elasticity, softness, elongation thiab compressive zog; zoo tshuaj stability, resistant rau ntau cov kuab tshuaj thiab roj; zoo heev hnav tsis kam, 20 lub sij hawm ntau dua li ntuj daim txhuam cev; thiab kev ua haujlwm zoo heev Nws yog cov khoom siv cushioning nrog kev ua tau zoo heev vim nws cov khoom xws li kub tsis kam, thermal rwb thaiv tsev thiab adhesion, tab sis tus nqi kuj siab. Yuav siv tau los ua sofas.