Puas yog polyurethane thiab silicone cov ntaub ntawv hloov nrog txhua lwm yam hauv kev siv cov ntawv thov?
Qhov zoo sib xws thiab sib txawv ntawm polyurethane thiab cov khoom lag luam silicone yog li hauv qab no. Hauv kev siv cov ntawv thov, lawv tuaj yeem hloov nyob rau qee qhov xwm txheej, tab sis feem ntau lawv tsis tuaj yeem hloov tag nrho:
Yam zoo sib xws
Polymer Cov Khoom Siv: Polyurethane thiab Silicone yog ob cov ntaub ntawv polymer, uas yog tsim ntawm cov atoms sib txuas los ntawm kev sib txuas lus sib txuas. Cov molecular saw qauv yog qhov nyuaj thiab muaj qee yam hloov tau thiab kev ua haujlwm.
Qee qhov hloov tau yooj yim: raws li cov mis thiab cov txheej txheem tsim nyog, ob qho tib si tuaj yeem qhia qee yam yooj yim thiab tuaj yeem hloov kho kom paub qee qhov kev tawm tsam thiab kev co.
Siv dav siv: lawv tau siv dav hauv ntau cov liaj teb xws li kev lag luam thiab lub neej, xws li cov khoom siv hluav taws xob, cov tsheb, thiab kev tsim kho.
Qho sib txawv
Muaj pes tsawg leeg thiab cov qauv: polyurethane yog cov khoom siv hluavtaws muaj sib sau ntawm polyurethane thiab oligomers, uas yog tsim los ntawm cov tshuaj tiv thaiv ntawm isocyanate thiab polyols; Silicone feem ntau yog hais txog silicone roj hmab, uas yog polymer elastic cov khoom muaj ntawm silicon atoms thiab oxygen atoms. Lub ntsiab tseem ceeb yog tsim ntawm SI-O-Si-Si Bonds, thiab sab saw muaj cov pawg organic xws li methyl thiab phenyl.
Cov Khoom Siv Lub Cev: Polyurethane muaj ntau yam ntawm hardness, los ntawm mos kom nyuaj, thiab muaj kev hnav zoo; Kev ua haujlwm kub yog feem ntau nyob ib ncig ntawm 125 degree -150 degree. Silicone muaj qhov zoo tshaj plaws elicicity thiab yooj yim, thiab muaj ntau ntau qhov ntsuas kub yoog. Nws tuaj yeem ua haujlwm ntawm -100 degree rau 350 degree, tab sis nws cov coj tsis kam yog tsis muaj zog.
Tshuaj lom neeg cov khoom: Polyurethane muaj kev siv tshuaj lom neeg zoo, tab sis yog rhiab rau cov muaj zog acids, muaj zog alkalis thiab qee cov kuab tshuaj organic; Silicone muaj cov tshuaj muaj zog heev thiab muaj qhov tsis zoo rau feem ntau cov kuab tshuaj organic, acids thiab alkalis.
Txoj kev ua: Polyurethane tuaj yeem tsim los ntawm kev txhaj tshuaj molding, molding, moulding thiab lwm txoj kev; Silicone feem ntau yog pwm los ntawm cov pwm, xws li kev txhaj tshuaj pwm, kev sib dhos kom zoo nkauj, thiab feem ntau yuav tsum tau ua cov txheej txheem tom qab xws li vulcanization.
Kev ua yeeb yam ib puag ncig: Polyurethane tuaj yeem rov ua dua rau qee yam, tab sis qee cov khoom siv raw tej zaum muaj qee yam kev ua mob rau ib puag ncig thiab lub cev; Raws li cov khoom siv inorganic, silicone muaj kev ua tau zoo ib puag ncig ib puag ncig, tsis tsim cov tshuaj phem ib puag ncig zoo, thiab muaj tus nqi ua haujlwm siab.
Tus nqi nqe: Feem ntau hais lus, tus nqi ntawm polyurethane cov ntaub ntawv yog qhov tsawg, thiab cov nqi ntawm cov khoom silicone feem ntau yog siab dua.