1. Dab tsi yog vinyl silicone roj?
Lub npe tshuaj: ob-capped vinyl silicone roj
Nws cov yam ntxwv tseem ceeb yog tias ib feem ntawm pawg methyl (Me) hauv polydimethylsiloxane yog hloov los ntawm vinyl (Vi), uas ua rau muaj kev tsim cov reactive polymethylvinylsiloxane. Vinyl silicone roj nthuav tawm lub cev daim ntawv ntawm cov kua dej vim nws cov qauv tshuaj tshwj xeeb.
Vinyl silicone roj feem ntau muab faib ua ob hom: kawg vinyl silicone roj thiab siab vinyl silicone roj. Ntawm lawv, terminal vinyl silicone roj feem ntau suav nrog terminal vinyl polydimethylsiloxane (Vi-PDMS) thiab terminal vinyl polymethylvinylsiloxane (Vi-PMVS). Vim muaj cov ntsiab lus vinyl sib txawv, nws muaj cov yam ntxwv ntawm daim ntawv thov sib txawv.
Cov tshuaj tiv thaiv mechanism ntawm vinyl silicone roj zoo ib yam li cov dimethicone, tab sis vim yog cov vinyl pawg hauv nws cov qauv, nws muaj ntau dua reactivity. Nyob rau hauv tus txheej txheem ntawm kev npaj vinyl silicone roj, lub nplhaib-qhib equilibrium cov txheej txheem yog tsuas yog siv. Cov txheej txheem siv octamethylcyclotetrasiloxane thiab tetramethyltetravinylcyclotetrasiloxane ua raw cov ntaub ntawv, thiab tsim cov qauv saw nrog ntau qib ntawm polymerization los ntawm lub nplhaib-qhib cov tshuaj tiv thaiv catalyzed los ntawm acid lossis alkali.
2. Kev ua tau zoo ntawm cov yas silicone roj
1. Non-toxic, tasteless, tsis muaj txhua yam impurities
Vinyl silicone roj yog cov xim tsis muaj xim lossis daj, pob tshab kua uas tsis muaj tshuaj lom, tsis muaj ntxhiab, thiab tsis muaj cov khoom tsis huv. Cov roj no yog insoluble hauv dej, tab sis nws tuaj yeem ua rau miscible nrog benzene, dimethyl ether, methyl ethyl ketone, tetrachlorocarbon lossis kerosene, thiab me ntsis soluble hauv acetone thiab ethanol.
2. Me me vapor siab, siab dua flash point thiab ignition point, txo qhov khov
Cov khoom no ua rau cov kua roj hmab silicone ruaj khov thiab tsis hloov pauv hauv qhov kub thiab txias lossis ib puag ncig tshwj xeeb, yog li ua kom lawv lub neej ntev hauv ntau yam kev siv.
3. Muaj zog reactivity
Muab ob npaug rau-capped vinyl silicone nrog vinyl ntawm ob qho kawg, uas ua rau nws muaj zog heev. Raws li qhov kev txiav txim ntawm catalyst, vinyl silicone roj tuaj yeem hnov mob nrog cov tshuaj muaj zog hydrogen pawg thiab lwm pab pawg ua haujlwm los npaj ntau yam khoom siv silicon nrog cov khoom tshwj xeeb. Thaum lub sij hawm cov tshuaj tiv thaiv, vinyl silicone roj tsis tso tawm lwm yam tsawg-molecular-hnyav tshuaj thiab muaj ib tug me me ntawm cov tshuaj tiv thaiv deformation, uas ntxiv txhim kho nws cov practicality nyob rau hauv cov tshuaj lom neeg kev lag luam.
4. Zoo heev plam, softness, brightness, kub thiab huab cua kuj
Cov khoom no ua rau cov kua roj hmab silicone muaj ntau yam kev siv hauv kev hloov pauv ntawm cov yas, resins, xim, txheej, thiab lwm yam. Tib lub sijhawm, nws kuj tseem siv tau los ua cov khoom siv raw hauv kev tsim cov khoom kub kub vulcanized silicone. roj hmab (HTV) los txhim kho lub zog thiab hardness ntawm silicone roj hmab. Hauv kev tsim cov kua roj hmab silicone, cov roj hmab silicone tseem yog cov khoom siv tseem ceeb rau kev txhaj tshuaj molding silicone roj hmab, hluav taws xob kua nplaum, thiab cov roj hmab thermal conductive.
3. Daim ntawv thov ntawm vinyl silicone roj
1. Lub hauv paus khoom ntawm high-temperature vulcanized silicone roj hmab (HTV):
Vinyl silicone roj yog tov nrog crosslinkers, ntxiv cov neeg sawv cev, cov xim, cov qauv tswj cov neeg ua haujlwm, cov tshuaj tiv thaiv kev laus, thiab lwm yam, thiab yog siv los npaj cov kub kub vulcanized silicone roj hmab raw roj hmab. Cov roj hmab silicone no muaj kev ruaj ntseg zoo thiab ruaj khov nyob rau hauv qhov kub thiab txias, thiab yog dav siv nyob rau hauv ntau lub sijhawm uas yuav tsum tau muaj qhov kub thiab txias thiab corrosion kuj.
2. Cov ntaub ntawv tseem ceeb ntawm cov kua silicone roj hmab:
Vinyl silicone roj tuaj yeem siv ua ke nrog hydrogen-muaj crosslinkers, platinum catalysts, inhibitors, thiab lwm yam., los npaj cov kua roj hmab silicone ntxiv. Cov roj hmab silicone no muaj qhov zoo fluidity, formability thiab elasticity, thiab yog dav siv nyob rau hauv silicone kev lag luam, textiles, tiv thaiv films thiab lwm yam teb.
3. Kev npaj cov ntaub ntawv tshiab:
Vinyl silicone roj reacts nrog ntau yam khoom siv organic xws li polyurethane thiab acrylic acid los npaj cov ntaub ntawv tshiab nrog kev ua tau zoo dua. Cov ntaub ntawv tshiab no muaj cov yam ntxwv ntawm huab cua tsis kam, tiv thaiv kev laus, tiv thaiv ultraviolet, thiab txhim kho toughness, thiab yog siv dav hauv txheej txheej, nplaum, cov ntaub ntawv sib khi thiab lwm yam.
4. Kev siv hauv kev siv hluav taws xob:
Vinyl silicone roj yog dav siv nyob rau hauv hluav taws xob adhesives, thermally conductive adhesives, LED teeb adhesives, LED ntim thiab hluav taws xob tivthaiv potting. Nws muab kev sib khi zoo tshaj plaws los tiv thaiv cov khoom siv hluav taws xob tsis zoo thiab cov khoom siv los ntawm kev sib kis los yog txav mus los, ua kom muaj kev ruaj ntseg thiab kev ntseeg siab ntawm cov khoom siv hluav taws xob.
5. Cov ntaub ntawv tseem ceeb ntawm tus neeg tso tawm:
Tus neeg sawv cev tso tawm plays lub luag haujlwm hauv kev tiv thaiv adhesion hauv kev tsim khoom, uas ua rau kev tso tawm du ntawm cov khoom thiab kev txhim kho kev tsim khoom.
4. Vinyl silicone roj kev lag luam kev loj hlob sib
1.Kev nthuav dav ntawm daim ntawv thov
Vinyl silicone kua dej tsis yog tsuas yog siv dav hauv tshuaj, tshuaj, hluav taws xob thiab lwm yam kev lag luam, tab sis kuj ua lub luag haujlwm tseem ceeb hauv cov tshuaj pleev ib ce thiab cov khoom tu tus kheej, lubricants, bearing lubricants, sealing cov ntaub ntawv, inks, plastics thiab roj hmab. Tshwj xeeb tshaj yog nyob rau hauv lub teb ntawm cov tshuaj pleev ib ce, vinyl silicone roj yog dav siv nyob rau hauv lub tsim ntawm soaps, tshuaj zawv plaub hau, moisturizers, lotions, conditioners thiab lwm yam khoom vim nws zoo heev lubrication thiab permeability.
2.Tshwj xeeb vinyl silicone roj
Cov neeg tsim khoom tuaj yeem tsim ntau yam kev ua haujlwm ntawm cov khoom siv yas silicone los ntawm kev txhim kho cov mis thiab ua kom zoo rau cov txheej txheem ntau lawm los txhim kho cov viscosity, fluidity, stability thiab lwm yam khoom ntawm vinyl silicone roj. Xws li lub teeb-kho, cationic-kho, biocompatible, thiab lwm yam, haum rau ntau yam kev siv.
3.Vinyl silicone roj ntsuab npaj
Nrog rau kev txhim kho ntawm ib puag ncig kev paub, kev txhim kho ib puag ncig tus phooj ywg cov txheej txheem tshiab rau kev npaj ntsuab ntawm vinyl silicone roj, xws li kev siv biodegradable monomers, khoom catalysts, ionic kua, thiab lwm yam, los txo kev siv cov kuab tshuaj lom thiab by- cov khoom, thiab ua tiav kev txhim kho kom ruaj khov.
4.Nano vinyl silicone roj khoom
Tsim thiab tsim cov khoom siv roj hmab silicone nrog cov khoom tshwj xeeb nanostructures, xws li vinyl silicone roj nanoparticles, nanofibers thiab molecular txhuam, thiab lwm yam, kom muab cov ntaub ntawv nrog cov teebmeem tshwj xeeb thiab cov khoom sib txuas, thiab qhib cov ntawv thov tshiab.
5. Ntim, cia thiab thauj
Cov khoom no yog cov khoom siv tshuaj lom neeg, thiab yuav tsum tsis txhob tov nrog impurities (tshwj xeeb tshaj yog catalysts) thaum lub sij hawm cia thiab thauj, thiab yuav tsum tau zam los ntawm kev sib cuag nrog cov tshuaj uas tuaj yeem ua rau nws cov tshuaj tiv thaiv, xws li acids, alkalis, oxidants, thiab lwm yam. tiv thaiv denaturation, thiab muab cia rau hauv qhov chaw txias thiab qhuav. Cov khoom no yog cov khoom tsis muaj kev phom sij thiab tuaj yeem thauj tau raws li cov xwm txheej ntawm cov khoom lag luam.
Lub sij hawm xa tuaj: Plaub Hlis-05-2024