Silicone sealant lossis nplaum yog cov khoom muaj zog, hloov tau yooj yim uas tuaj yeem siv rau ntau yam kev siv. Txawm hais tias silicone sealant tsis muaj zog li qee cov sealants los yog cov nplaum, silicone sealant tseem hloov tau yooj yim, txawm tias ib zaug nws tau qhuav tag lossiskho. Silicone sealant tseem tuaj yeem tiv taus qhov kub thiab txias, ua rau nws zoo tagnrho rau cov ntawv thov uas raug kev kub ntxhov siab, xws li ntawm lub cav gaskets.
Kho silicone sealant nthuav tawm cov huab cua zoo heev, kev laus ua haujlwm, UV tsis kam, ozone tsis kam, siab thiab kub tsis kam, kev co tsis kam, noo noo tsis kam, thiab cov khoom tsis muaj dej; yog li ntawd, nws cov kev siv yog dav heev. Nyob rau xyoo 1990, nws feem ntau yog siv rau kev sib khi thiab sib khi hauv kev lag luam iav, yog li nws feem ntau hu ua "glass adhesive."
Sab saum toj daim duab: Kho silicone sealant
Sab laug daim duab: Nruas packing ntawm silicone sealant
Silicone sealant feem ntau yog raws li 107 (hydroxy-terminated polydimethylsiloxane), thiab nws yog tsim los ntawm cov ntaub ntawv xws li high-molecular-weight polymers, plasticizers, fillers, cross-linking agents, coupling agents, catalysts, etc. Feem ntau siv plasticizers muaj xws li silicone. roj, roj dawb, thiab lwm yam. Feem ntau siv fillers muaj xws li nano-activated calcium carbonate, hnyav calcium carbonate, ultrafine calcium. carbonate, fumed silica, thiab lwm yam ntaub ntawv.
Silicone sealants tuaj nyob rau hauv ntau hom sib txawv.
Raws li hom cia, nws muab faib ua: ob (ntau) tivthaiv thiab ib qho khoom siv.
Ob (ntau) tivthaiv txhais tau hais tias silicone sealant muab faib ua ob pawg (los yog ntau tshaj ob) qhov chaw A thiab B, ib qho kev tivthaiv ib leeg tsis tuaj yeem tsim kho, tab sis tom qab ob yam khoom (lossis ntau tshaj ob) qhov sib xyaw, lawv yuav tsim cross-linking curing cov tshuaj tiv thaiv rau daim ntawv elastomers.
Qhov sib tov yuav tsum tau ua tam sim ua ntej siv nws, uas ua rau hom silicone sealant tsis yooj yim rau siv.
Silicone sealant kuj tuaj yeem ua ib yam khoom, tsis tas yuav tsum tau sib tov. Ib hom ntawm ib qho khoom siv silicone sealant hu uaChav Kub Vulcanizing(RTV). Daim ntawv sealant no pib kho sai li sai tau thaum nws raug huab cua - lossis, ntau dua, cov dej noo hauv huab cua. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum tau ua haujlwm sai thaum siv RTV silicone sealant.
Ib leeg-cov khoom siv silicone sealant tuaj yeem muab faib ua: hom deacidification, hom decoholization, hom deketoxime, hom deacetone, hom deamidation, hom dehydroxylamine, thiab lwm yam. Ntawm lawv, hom deacidification, hom dealcoholization thiab deketoxime hom feem ntau yog siv hauv khw.
Deacidification hom yog methyl triacetoxysilane (los yog ethyl triacetoxysilane, propyl triacetoxysilane, thiab lwm yam) raws li tus neeg sawv cev crosslinking, uas tsim cov acetic acid thaum kho, feem ntau hu ua "acid kua nplaum". Nws qhov zoo yog: lub zog zoo thiab pob tshab, kho ceev ceev. Disadvantages yog: irritating acetic acid tsw, corrosion ntawm hlau.
Dealcoholization hom yog rau methyl trimethoxysilane (los yog vinyl trimethoxysilane, thiab lwm yam) raws li ib tug crosslinking tus neeg sawv cev, nws cov txheej txheem curing ua methanol, feem ntau hu ua "Cawv-hom kua nplaum". Nws qhov zoo yog: kev tiv thaiv ib puag ncig, tsis muaj corrosive. Disadvantages: qeeb curing ceev, cia txee lub neej yog me ntsis pluag.
Deketo oxime hom yog methyl tributyl ketone oxime silane (los yog vinyl tributyl ketone oxime silane, thiab lwm yam) raws li tus neeg sawv cev crosslinking, uas ua rau butanone oxime thaum kho, feem ntau hu ua "oxime hom kua nplaum". Nws qhov zoo yog: tsis muaj ntxhiab tsw loj heev, zoo adhesion rau ntau yam ntaub ntawv. Disadvantages: corrosion ntawm tooj liab.
Raws li kev siv cov khoom muab faib ua: cov qauv sealant, huab cua resistant sealant, qhov rooj thiab qhov rais sealant, sealant sib koom ua ke, hluav taws-pov thawj sealant, anti-mildew sealant, kub sealant.
Raws li cov xim ntawm cov khoom mus rau cov ntsiab lus: pa xim dub, porcelain dawb, pob tshab, nyiaj grey 4 yam, lwm yam xim peb tuaj yeem nqa tawm raws li cov neeg siv khoom toning.
Muaj ntau yam ntawm lwm yam, ntau yam txuj ci siab heev ntawm silicone sealant thiab. Ib hom, hu uasiab rhiabsilicone sealant, muaj qhov ruaj khov ruaj khov thiab ua raws li kev txhob txwm siab - hauv lwm lo lus, txawm hais tias nws yuav ib txwm "nplaum", nws yuav tsis lo yog ib yam dab tsi tsuas txhuam los yog tawm tsam nws. Lwm hom hu uaUV or hluav taws xob khosilicone sealant, thiab siv lub teeb ultraviolet los kho cov sealant. Thaum kawg,ntsuas kubsilicone sealant yuav tsum raug tshav kub kom kho tau.
Silicone sealant tuaj yeem siv rau ntau yam kev siv. Hom sealant no nquag siv hauv tsheb thiab lwm yam kev siv, xws li kev pabcuam rau kev sib khi lub cav, nrog lossis tsis muaj gaskets. Vim nws txoj kev yooj yim tshaj plaws, lub sealant kuj yog ib qho kev xaiv zoo rau ntau yam haujlwm nyiam lossis khoom siv tes ua.
Post lub sij hawm: Dec-29-2023
