Polyether thiab polyester polyurethaneyog ob qho khoom siv tshuaj lom neeg uas muaj zog tshwj xeeb thiab tsis muaj zog, ua rau lawv haum rau kev siv sib txawv. Peb yuav sib piv cov yam ntxwv ntawm polyester thiab polyether polyurethane, tsom rau lawv qhov tsim nyog rau ntau yam kev siv hauv kab lus no.
Polyether raws li polyurethane yog cov khoom siv ntau yam pom zoo rau cov ntawv thov kev kub ntxhov nruab nrab mus rau siab. Nws yog lub npe hu rau nws zoo heev hydrolytic stability, fungus kuj, thiab tsawg-kub yooj, uas ua rau nws yog ib tug zoo xaiv rau kev siv nyob rau hauv ntau yam kev siv. Tsis tas li ntawd, polyether raws li polyurethanes muaj kev ruaj ntseg ntev hauv dej sov li 50 degree (122℉) rau lub sijhawm ntev, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev siv hauv cov ntawv thov uas raug dej muaj kev txhawj xeeb. Txawm li cas los xij, nws tsis raug qhia kom ntws dej ntau tshaj 70 degree (158℉), thiab dej tsis kam yog qhov tseem ceeb rau kev siv pneumatic.
Polyether raws li polyurethane feem ntau kim dua polyester raws li polyurethane, tab sis nws qhia tau hais tias zoo dua durability, nrog lub txee lub neej ntawm kwv yees li tsib xyoos piv rau peb xyoos ntawm polyester raws li polyurethane xws li PU tubing. Polyether raws li polyurethane kuj muaj qhov ntim tsis txaus swell thiab dej nqus ntawm 0.3% mus rau 1% los ntawm qhov hnyav.
Ntawm qhov tod tes, polyester raws li polyurethane yog cov khoom siv tau zoo uas pom zoo siv rau kev xav tau cov roj zoo heev thiab kev puas tsuaj. Polyester raws li polyurethane muaj qhov tawg siab tsis kam piv rau polyether raws tubing, ua rau nws yog qhov kev xaiv zoo tshaj rau kev siv hauv kev siv siab. Txawm li cas los xij, polyester raws li polyurethane tsis pom zoo siv rau hauv high humidity los yog raug dej, vim hais tias ntim swells thiab txo cov khoom yuav tshwm sim.
Hauv cov ntsiab lus, polyester thiab polyether raws li polyurethane muaj cov yam ntxwv tshwj xeeb uas ua rau lawv haum rau kev siv sib txawv. Polyether raws li polyurethane yog cov khoom siv ntau yam pom zoo rau cov ntawv thov kev kub ntxhov siab, thaum polyester raws li polyurethane yog cov khoom siv zoo tshaj plaws rau cov ntawv thov uas xav tau cov roj zoo heev thiab kev puas tsuaj. Los ntawm kev xav txog daim ntawv thov tshwj xeeb, peb tuaj yeem xaiv cov khoom siv polyurethane tsim nyog thiab ua kom pom kev ua haujlwm zoo thiab ua haujlwm ntev.
Beiqiao Cov Khoom Siv Tshiab tuaj yeem muab ntau yam ntawm polyether / polyester polyol nrog rau polyurethane formulations thiab prepolymers, TPU granules rau cov khoom siv high-performance polyurethane foams thiab elastomers.tiv tauj pebyog koj muaj lus nug.