Chav kub vulcanized silicone roj hmab (RTV) yog ib hom tshiab ntawm silicone elastomer uas tau tawm hauv xyoo 1960. Qhov tseem ceeb tshaj plaws ntawm cov roj hmab no yog tias nws tuaj yeem kho tau hauv qhov chaw ntawm chav tsev kub yam tsis muaj cua sov, xws li los ntawm nias, thiab nws yooj yim heev rau siv. Yog li ntawd, nws tau dhau los ua ib feem tseem ceeb ntawm tag nrho cov khoom siv silicone sai li sai tau thaum nws tawm los. Tam sim no chav tsev kub vulcanized silicone roj hmab tau dav siv los ua nplaum, sealants, tiv thaiv txheej, potting thiab molding cov ntaub ntawv, thiab muaj nws siv nyob rau hauv tag nrho cov mus rau lub neej.
Chav tsev kub vulcanized silicone roj hmab yog hu ua kua silicone roj hmab vim nws qhov hnyav molecular. Nws daim ntawv lub cev feem ntau yog cov kua dej ntws los yog cov kua nplaum uas muaj viscosity ntawm 100 thiab 1,000,000 centistokes. Raws li cov kev xav tau ntawm kev siv, cov roj hmab ua ntej vulcanization tuaj yeem tsim rau hauv cov khoom siv ntawm tus kheej-leveling potting los yog tsis ntws tab sis smearable putty. Cov muab tub lim siv nyob rau hauv chav tsev kub vulcanized silicone roj hmab zoo ib yam li cov kub kub vulcanized silicone roj hmab. Nws tau ntxiv dag zog nrog cov roj carbon dub kom muab cov roj hmab vulcanized lub zog tsim kua muag ntawm 10 txog 60 kg / cm2. Ntxiv cov khoom sib txawv tuaj yeem ua rau cov roj hmab muaj qhov sib txawv ntawm lub ntiajteb txawj nqus, hardness, lub zog, fluidity thiab thixotropy, thiab ua rau cov roj hmab vulcanized muaj ntau yam tshwj xeeb xws li nplaim taws, hluav taws xob conductivity, thermal conductivity, thiab ablation kuj.
Chav tsev kub vulcanized silicone roj hmab tuaj yeem muab faib ua ib leeg thiab ob lub ntsiab lus chav tsev kub vulcanized silicone roj hmab raws li nws txoj kev ntim khoom, thiab tuaj yeem muab faib ua hom condensation thiab ntxiv hom raws li vulcanization mechanism. Yog li ntawd, chav tsev kub vulcanized silicone roj hmab tuaj yeem muab faib ua peb hom raws li nws muaj pes tsawg leeg, vulcanization mechanism thiab siv cov txheej txheem, uas yog ib leeg-chav tsev kub vulcanized silicone roj hmab, ob-component condensation hom chav tsev kub vulcanized silicone roj hmab thiab ob-component ntxiv hom. chav tsev kub vulcanized silicone roj hmab.
Cov roj hmab nyoos ntawm ib leeg thiab ob lub ntsiab lus condensation hom chav tsev kub vulcanized silicone roj hmab yog , ω-dihydroxy polysiloxane; Ntxiv hom chav tsev kub vulcanized silicone roj hmab yog polysiloxane uas muaj alkenyl thiab hydrogen sab pawg (los yog pawg kawg). Vim nws muaj peev xwm ua tau zoo curing nyhuv ntawm qhov kub me ntsis siab dua chav tsev kub (50-150 degree) thaum kho, nws tseem hu ua low temperature vulcanized silicone rubber (LTV).
Cov peb series ntawm chav tsev kub vulcanized silicone roj hmab txhua tus muaj nws tus kheej zoo thiab qhov tsis zoo: qhov zoo ntawm ib chav tsev kub vulcanized silicone roj hmab yog tias nws yog ib qho yooj yim mus use, tab sis lub sib sib zog nqus curing ceev yog ntau nyuaj; Qhov kom zoo dua ntawm ob chav tsev kub vulcanized silicone roj hmab yog tias nws tsis tso cua sov thaum lub sij hawm kho, muaj ib tug me me shrinkage tus nqi, tsis nthuav, tsis muaj kev ntxhov siab nyob rau hauv, thiab yuav kho tau ib txhij nyob rau hauv thiab nyob rau saum npoo, thiab yuav ua tau. tob vulcanized; lub sij hawm vulcanization ntawm qhov sib ntxiv ntawm chav tsev kub vulcanized silicone roj hmab yog txiav txim siab los ntawm qhov kub thiab txias, yog li nws cov vulcanization ceev tuaj yeem tswj tau los ntawm kev kho qhov kub thiab txias.