Cov tshuaj nplaum silicone lossis cov nplaum yog ib yam khoom muaj zog thiab yoog tau uas siv tau rau ntau yam kev siv sib txawv. Txawm hais tias cov tshuaj nplaum silicone tsis muaj zog npaum li qee cov tshuaj nplaum lossis cov nplaum, cov tshuaj nplaum silicone tseem yoog tau heev, txawm tias thaum nws qhuav tag lossiskho tauCov roj hmab silicone sealant kuj tseem tuaj yeem tiv taus qhov kub siab heev, ua rau nws zoo tagnrho rau cov ntawv thov uas raug cua sov ntau, xws li ntawm cov gaskets cav.
Cov roj hmab silicone uas kho tau zoo heev ua rau nws tiv taus huab cua zoo heev, tiv taus kev laus, tiv taus UV, tiv taus ozone, tiv taus kub thiab txias siab, tiv taus kev co, tiv taus dej noo, thiab tiv taus dej tsis nkag; yog li ntawd, nws cov kev siv dav heev. Xyoo 1990, nws feem ntau yog siv rau kev sib txuas thiab kaw hauv kev lag luam iav, yog li nws feem ntau hu ua "cov nplaum iav."
Tom ntej: Silicone sealant kho
Daim duab sab laug: Lub nruas ntim cov silicone sealant
Cov khoom siv silicone sealant feem ntau yog ua los ntawm 107 (hydroxy-terminated polydimethylsiloxane), thiab nws yog tsim los ntawm cov ntaub ntawv xws li cov polymers siab-molecular-weight, plasticizers, fillers, cross-linking agents, coupling agents, catalysts, thiab lwm yam. Cov plasticizers siv feem ntau suav nrog roj silicone, roj dawb, thiab lwm yam. Cov fillers siv feem ntau suav nrog nano-activated calcium carbonate, hnyav calcium carbonate, ultrafine calcium carbonate, fumed silica, thiab lwm yam ntaub ntawv.
Cov roj hmab silicone sealant muaj ntau hom sib txawv.
Raws li hom kev cia khoom, nws muab faib ua: ob (ntau) tivthaiv thiab ib qho tivthaiv.
Ob (ntau) Cheebtsam txhais tau hais tias cov silicone sealant faib ua ob pawg (lossis ntau dua ob) ntu A thiab B, ib qho khoom ib leeg tsis tuaj yeem tsim kev kho, tab sis tom qab ob qho khoom (lossis ntau dua ob) ntu sib xyaw, lawv yuav tsim cov tshuaj tiv thaiv kev kho kom sib txuas los tsim cov elastomers.
Yuav tsum tau ua cov khoom sib tov ua ntej siv, uas ua rau hom silicone sealant no nyuaj siv heev.
Cov tshuaj nplaum silicone kuj tseem tuaj yeem ua ib yam khoom xwb, tsis tas yuav sib tov. Ib hom tshuaj nplaum silicone uas ua ib yam khoom xwb hu uaKev Siv Vulcanizing Kub Hauv Chav(RTV). Hom sealant no pib qhuav sai li sai tau thaum nws raug cua - lossis, qhov tseeb dua, cov dej noo hauv huab cua. Yog li ntawd, nws yog ib qho tseem ceeb uas koj ua haujlwm sai thaum siv RTV silicone sealant.
Cov khoom siv silicone sealant ib leeg tuaj yeem muab faib ua: hom deacidification, hom dealcoholization, hom deketoxime, hom deacetone, hom deamidation, hom dehydroxylamine, thiab lwm yam raws li cov neeg sawv cev sib txawv (lossis cov molecule me me uas tsim thaum lub sijhawm kho). Ntawm lawv, hom deacidification, hom dealcoholization thiab hom deketoxime feem ntau yog siv hauv kev ua lag luam.
Hom deacidification yog methyl triacetoxysilane (lossis ethyl triacetoxysilane, propyl triacetoxysilane, thiab lwm yam) ua tus neeg sawv cev crosslinking, uas tsim cov acetic acid thaum lub sijhawm kho, feem ntau hu ua "acid glue". Nws qhov zoo yog: lub zog zoo thiab pob tshab, kho sai. Qhov tsis zoo yog: ntxhiab acetic acid khaus, xeb ntawm cov hlau.
Hom kev sib xyaw ua ke yog siv methyl trimethoxysilane (lossis vinyl trimethoxysilane, thiab lwm yam) ua tus neeg sawv cev sib txuas, nws cov txheej txheem kho tsim cov methanol, feem ntau hu ua "cawv-hom kua nplaum". Nws qhov zoo yog: kev tiv thaiv ib puag ncig, tsis xeb. Qhov tsis zoo: kev kho qeeb qeeb, lub sijhawm khaws cia tsis zoo me ntsis.
Hom Deketo oxime yog methyl tributyl ketone oxime silane (lossis vinyl tributyl ketone oxime silane, thiab lwm yam) ua tus neeg sawv cev hla kev sib txuas, uas tsim cov butanone oxime thaum lub sijhawm kho, feem ntau hu ua "oxime type glue". Nws qhov zoo yog: tsis muaj ntxhiab tsw loj dhau, nplaum zoo rau ntau yam khoom siv. Qhov tsis zoo: xeb ntawm tooj liab.
Raws li kev siv cov khoom muab faib ua: cov khoom siv foob pob zeb, cov khoom siv foob pob zeb tiv taus huab cua, cov khoom siv foob pob zeb qhov rooj thiab qhov rai, cov khoom siv foob pob zeb sib koom ua ke, cov khoom siv foob pob zeb tiv taus hluav taws, cov khoom siv foob pob zeb tiv thaiv pwm, cov khoom siv foob pob zeb kub.
Raws li cov xim ntawm cov khoom rau cov ntsiab lus: xim ib txwm dub, porcelain dawb, pob tshab, nyiaj grey 4 hom, lwm yam xim peb tuaj yeem nqa tawm raws li cov neeg siv khoom xav tau toning.
Kuj muaj ntau hom silicone sealant uas siv thev naus laus zis siab dua. Ib hom, hu uarhiab heevCov roj hmab silicone sealant, muaj qhov nplaum tas mus li thiab lo nrog kev nias - hais lwm yam, txawm hais tias nws yuav ib txwm "nplaum," nws yuav tsis lo yog tias muaj qee yam tsuas yog txhuam lossis so rau ntawm nws. Lwm hom hu uaUV or kho mob los ntawm kev siv hluav taws xobcov tshuaj nplaum silicone, thiab siv lub teeb ultraviolet los kho cov tshuaj nplaum. Thaum kawg,thermosetCov roj hmab silicone yuav tsum tau muab cua sov rau kom nws khov.
Cov tshuaj nplaum silicone siv tau rau ntau yam kev siv. Hom tshuaj nplaum no feem ntau siv rau hauv tsheb thiab lwm yam kev siv, xws li kev pab kaw lub cav, nrog lossis tsis muaj gaskets. Vim nws muaj kev ywj pheej zoo, cov tshuaj nplaum no kuj yog qhov kev xaiv zoo rau ntau yam kev nyiam ua si lossis kev ua tes ua taw.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-29-2023
