Dab tsi yog hom roj hmab foob ua npuas ncauj khoom?
Roj hmab foobCov khoom ua npuas ncauj tau siv dav hauv kev lag luam niaj hnub thiab lub neej niaj hnub, nrog cov khoom zoo xws li lub teeb yuag, siab elasticity, zoo thermal rwb thaiv tsev, suab nqus, thiab cushioning. Raws li lub hauv paus ntsiab lus ntawm foaming, txheej txheem kev npaj, hom foaming agent, thiab ntau yam kev siv, cov khoom siv roj hmab foaming tuaj yeem muab faib ua ntau hom. Cov hauv qab no yog ib qho kev piav qhia tob ntawm cov yam ntxwv thiab cov txheej txheem ntawm cov khoom siv roj hmab ua npuas ncauj los ntawm hom.
Classified los ntawm hom foaming
Raws li kev sib txawv foaming, roj hmab foob foaming khoom tuaj yeem muab faib ua ob pawg: lub cev thiab tshuaj.
Lub cev foamed roj hmab khoom
Lub cev foaming yog ua tiav los ntawm kev qhia cov pa roj lossis cov kua dej tsis haum xws li CO₂, N₂, lossis qee cov kua dej kub npau npau rau hauv cov roj hmab matrix. Tsis muaj tshuaj lom neeg tshwm sim nyob rau hauv txoj kev no, thiab kev tsim ntawm npuas yog tsav los ntawm lub cev ua haujlwm.
Qhov zoo: cov qauv foaming zoo, tswj tau npuas loj, ua haujlwm zoo ib puag ncig.
Cov ntawv thov: Cov khoom siv siab kawg uas xav tau kev ua kom huv thiab sib xws, xws li cov ntsaws ruaj ruaj, thiab cov roj hmab kho mob.
Tshuaj-foamed roj hmab cov khoom
Tshuaj foaming yog ntxiv cov tshuaj foaming tus neeg sawv cev rau cov roj hmab, thiab cov decomposition ntawm lub tshuab tshuab tso tawm gases (xws li nitrogen, thiab carbon dioxide), ua npuas nyob rau hauv cov roj hmab matrix.
Qhov zoo: Cov txheej txheem yooj yim, tus nqi qis, thiab nws tuaj yeem ua tiav ntawm cov khoom siv roj hmab zoo tib yam.
Cov ntawv thov ib txwm: cov ntaub ntawv khau khau, cov ntaub qhwv lub thermal rwb thaiv tsev, cov ntaub so ntswg poob siab, thiab lwm yam khoom siv niaj hnub thiab niaj hnub tsim.
Kev faib tawm los ntawm cov khoom siv matrix
Cov khoom siv roj hmab foob tuaj yeem muab faib ua cov pawg hauv qab no raws li cov khoom sib txawv ntawm cov khoom siv roj hmab:
Ntuj roj hmab (NR) foamed khoom
Cov roj hmab ntuj muaj elasticity zoo heev, tensile lub zog, thiab puas kuj, thiab yog ib qho ntawm cov khoom siv foaming. Cov ntawv thov muaj xws li cov ntaub ntawv poob siab, elastic gaskets, thiab lwm yam.
Nitrile butadiene roj hmab (NBR) ua npuas ncauj khoom
Nitrile roj hmab muaj cov roj zoo heev thiab ua kom tsis zoo, ua rau nws tsim nyog siv rau hauv cov khoom siv foamed xws li cov ntsaws ruaj ruaj thiab cov ntaub thaiv npog hauv cov roj thiab roj ib puag ncig.
Ethylene propylene diene monomer (EPDM) foamed khoom
Vim nws cov huab cua zoo heev, tiv thaiv kev laus, thiab ozone tsis kam, EPDM tau siv dav hauv cov khoom ua npuas dej hauv qhov chaw sab nraum zoov xws li tsheb huab cua thiab cov khoom siv hauv tsev.
Silicone roj hmab (VMQ) ua npuas ncauj khoom
Silicone roj hmab muaj qhov zoo heev thiab kub tsis kam thiab yog dav siv nyob rau hauv high-kev ua tau zoo foamed khoom nyob rau hauv aerospace thiab electronics industries.
Fluoroelastomer (FKM) ua npuas ncauj khoom
Fluoroelastomers yog cov tshuaj tiv thaiv thiab muaj qhov kub thiab txias, ua rau lawv tsim nyog rau kev siv hauv cov khoom foamed hauv qhov chaw huab cua, xws li cov ntsaws ruaj ruaj kub.
Polyurethane roj hmab (PU) ua npuas ncauj khoom
Polyurethane roj hmab foams yog tus cwj pwm los ntawm kev ua haujlwm siab thiab kev ua haujlwm zoo thiab feem ntau siv rau hauv cov ntaub ntawv cushioning thiab khau khau.
Classified raws li foaming qauv
Raws li kev faib tawm thiab kev sib txuas ntawm cov npuas, cov khoom siv roj hmab tau muab faib ua cov qauv qhib-cell thiab kaw-cell cov qauv.
Qhib-cell qauv
Cov npuas ntawm cov qauv qhib ntawm tes txuas nrog, uas muaj cov cua permeability zoo thiab nqus suab.
Daim ntawv thov: suab-absorbing cov ntaub ntawv, lim cov ntaub ntawv.
Kaw-cell qauv
Cov npuas ntawm cov qauv kaw-cell yog ywj siab ntawm ib leeg, muaj qhov zoo airtightness, thiab muaj cov cua sov zoo thiab tsis muaj dej.
Cov ntawv thov raug: Cov ntaub thaiv cua sov, thiab cov ntsaws ruaj ruaj.