Polyurethane (PU), lub npe tag nrho ntawm polyurethane, yog ib qho polymer compound, uas tau tsim tawm xyoo 1937 los ntawm Otto Bayer thiab lwm tus. Polyurethane muaj ob pawg tseem ceeb: polyester thiab polyether. Lawv tuaj yeem ua rau polyurethane plastics (feem ntau yog ua npuas ncauj), polyurethane fibers (hu ua spandex hauv Suav teb), polyurethane roj hmab thiab elastomers. Polyurethane yog ib yam khoom polymer uas zoo tagnrho rau siv ua lub log npog hauv kev tsim cov casters kev lag luam.
Cov txiaj ntsig tseem ceeb ntawm polyurethane casters yog raws li nram no:
Ua ntej, qhov kev ua tau zoo ntawm qhov ntau yam kho tau
Muaj ntau yam kev ntsuas kev ua tau zoo ntawm lub cev thiab lub tshuab uas tuaj yeem hloov kho tau los ntawm kev xaiv cov khoom siv raw thiab cov mis, nyob rau hauv qee qhov kev hloov pauv yooj yim, kom ua tau raws li tus neeg siv cov kev xav tau tshwj xeeb rau kev ua haujlwm ntawm cov khoom.
Qhov thib ob, kev tiv thaiv kev puas tsuaj zoo dua
Thaum muaj dej, roj thiab lwm yam khoom siv ntub dej ua haujlwm, cov polyurethane casters hnav tsis kam feem ntau ntau zaus txog ntau zaus dua li cov roj hmab ib txwm muaj. Cov khoom siv hlau xws li hlau thiab lwm yam khoom siv tawv, tab sis tsis tas yuav hnav tsis kam!
Qhov thib peb, cov txheej txheem ua, kev siv dav dav
Cov polyurethane elastomers tuaj yeem ua los ntawm roj hmab dav dav los ntawm kev ua kom yas, sib tov thiab vulcanizing (MPU); lawv kuj tuaj yeem ua rau cov roj hmab ua kua, nchuav thiab molding lossis txau, kaw thiab centrifugal molding (CPU); lawv kuj tuaj yeem ua rau cov khoom siv granular thiab cov yas ib txwm los ntawm kev txhaj tshuaj, extrusion, calendering, tshuab molding thiab lwm yam txheej txheem (CPU). Cov khoom pwm lossis txhaj tshuaj pwm, nyob rau hauv qee qhov nyuaj, kuj tuaj yeem txiav, sib tsoo, drilling thiab lwm yam kev ua haujlwm kho tshuab.
Qhov thib plaub, tsis kam roj, tsis kam ozone, tsis kam laus, tsis kam hluav taws xob, tsis kam kub tsawg, kis tau suab zoo, muaj zog nplaum, zoo heev biocompatibility thiab sib xws nrog cov ntshav. Cov txiaj ntsig no yog qhov laj thawj vim li cas polyurethane elastomers siv dav hauv tub rog, aerospace, acoustics, biology thiab lwm yam teb.
Lub sijhawm tshaj tawm: Lub Kaum Hli-30-2023