Hauv tsev neeg ntawm cov khoom siv silicone, cov roj dimethyl silicone yog dav siv vim nws cov khoom ruaj khov, hos hydrogen -cov roj silicone tseem qis dua -profile. Nws tus nqi tseem ceeb nyob hauv qhov tshwj xeeb reactivity ntawm Si-H daim ntawv cog lus hauv nws cov saw hlau molecular. Tsis yog muab cov haujlwm ncaj qha rau saum npoo xws li lubrication lossis defoaming, hydrogen- muaj cov roj silicone hloov cov khoom siv los ntawm cov tshuaj tiv thaiv, ua rau nws tseem tsis tau muaj nyob hauv thaj chaw xws li siab - kev tsim khoom kawg rau cov khoom siv niaj hnub. Tsab ntawv xov xwm no tshawb txog cov yam ntxwv tseem ceeb thiab daim ntawv thov scenarios ntawm hydrogen- muaj cov roj silicone, nrog rau kev tsom mus rau kev ua haujlwm ntawm Si-H daim ntawv cog lus.
I. Lub Ntsiab Cai: Lub Hom Phiaj Ntawm Si-H Bond
Qhov sib txawv tseem ceeb ntawm hydrogen- muaj cov roj silicone thiab dimethyl silicone roj nyob hauv cov hloov pauv hloov pauv hauv lawv cov qauv molecular. Hauv cov roj dimethyl silicone, silicon atoms yog sib koom ua ke rau inert methyl pawg (-CH₃), thiab qhov ua tau ruaj khov Si-C bonds muab cov tshuaj inertness zoo heev. Hauv hydrogen-muaj cov roj silicone, txawm li cas los xij, qee cov methyl pawg tau hloov los ntawm reactive hydrogen atoms (-H), tsim methylhydrosiloxane units (-Si(H)(CH₃)O-). Si-H daim ntawv cog lus nyob rau hauv cov koog no yog "tus ntsuj plig" ntawm cov khoom thiab yog lub luag haujlwm rau nws cov haujlwm tshwj xeeb.
Tsis zoo li Si-C daim ntawv cog lus ruaj khov, Si-H daim ntawv cog lus muaj zog heev thiab tuaj yeem koom nrog ntau yam tshuaj tiv thaiv nyob rau hauv cov xwm txheej tshwj xeeb:
Ntxiv cov tshuaj tiv thaiv (hydrosilylation):Nyob rau hauv lub xub ntiag ntawm catalysts xws li platinum los yog rhodium, Si-H bonds react nrog unsaturated organic tebchaw uas muaj C=C los yog C≡C daim ntawv cog lus rau tsim ruaj Si-C linkages. Cov txheej txheem no tsim lub hauv paus rau kev siv hydrogen- muaj cov roj silicone ua tus ntoo khaub lig- txuas tus neeg sawv cev lossis tus neeg sawv cev grafting.
Cov tshuaj tiv thaiv condensation:Si-H daim ntawv cog lus ua haujlwm nrog cov pab pawg nquag xws li hydroxyl (-OH) lossis amino (-NH₂) pawg thaum tso cov pa roj hydrogen, ua kom muaj cov txheej txheem tiv thaiv ntom ntom ntawm cov khoom siv.
Hydrolysis cov tshuaj tiv thaiv:Thaum muaj cov kua qaub lossis cov hauv paus, lossis ntawm qhov kub siab, Si-H daim ntawv cog lus nrog dej kom tso cov pa roj hydrogen, ua cov khoom tsim nyog rau cov ntawv thov uas xav tau qhov tob - nkag mus rau cov dej tsis zoo.
Txo cov khoom:Raws li qee qhov xwm txheej, hydrogen- muaj cov roj silicone tuaj yeem ua tus neeg ua haujlwm txo qis thiab yog li siv rau hauv cov txheej txheem tshuaj tshwj xeeb, suav nrog cov khoom siv catalyst.
Qhov zoo tshaj plaws reactivity no ua rau hydrogen-muaj cov roj silicone kom dhau lub luag haujlwm ntawm cov khoom siv kawg yooj yim thiab tso nws ua ib qho tseem ceeb nruab nrab ntawm kev sib txuas cov khoom siv raw nrog siab - cov ntaub ntawv ua tau zoo.
II. Cov ntawv thov tseem ceeb: Kev siv tswv yim raws li Si-H Bond Reactivity
Txhua daim ntawv thov ntawm hydrogen- muaj cov roj silicone thaum kawg vam khom cov tshuaj ua haujlwm ntawm Si-H daim ntawv cog lus, tsim cov nqi tseem ceeb thoob plaws ntau qhov kev lag luam siab heev.
1. Core Raw Material for Cross -Txuas thiab Kho: Ib qho tseem ceeb hauv High-Cov Khoom Siv Kawg
Qhov no yog daim ntawv thov tseem ceeb tshaj plaws ntawm hydrogen - muaj cov roj silicone. Ntxiv rau- kho cov kua roj hmab silicone, hluav taws xob potting compounds, thiab optically clear adhesives, hydrogen-muaj silicone roj reacts nrog vinyl-functional silicone roj nyob rau hauv lub xub ntiag ntawm platinum catalysts los tsim ib tug robust peb- qhov ntev network qauv, hloov cov kua gels rau hauv ib qho system.
Txoj kev kho no ua rau tsis muaj los ntawm - cov khoom, nthuav tawm tsawg kawg nkaus shrinkage, thiab tso cai rau kev kho kom tob. Nws ua tau raws li qhov xav tau ntawm ib puag ncig thiab precision thiab dav siv hauv kev kho mob catheters, pacifiers tus me nyuam, cov ntaub ntawv LED encapsulation, thiab cov khoom siv hluav taws xob tiv thaiv, ua kom cov khoom muaj kev nyab xeeb thiab ntev -lub sij hawm ruaj khov.
2. Nto Modifier: Imparting Durable Functional Properties
Hauv kev lag luam textile, tawv, thiab ntawv, hydrogen-muaj cov roj silicone muaj qhov zoo sib xws los ntawm cov tshuaj tiv thaiv condensation. Nws reacts nrog hydroxyl pawg uas muaj nyob rau ntawm fiber ntau thiab tawv tawv thaum tib lub sij hawm hla tus ntoo khaub lig-txuas mus rau ib tug tuab polysiloxane zaj duab xis. Cov yeeb yaj kiab no tsis yog tsuas yog ua rau lub ntsej muag muag muag tab sis kuj tseem muab cov dej ua kom ruaj khov, ua kom tsis muaj zog, thiab tiv thaiv wrinkle.
Tsis zoo li dimethyl silicone roj, uas yog feem ntau nyob rau hauv lub cev adsorption thiab yog li ntawd muaj kev txwv tsis pub ntxuav, cov tshuaj tiv thaiv kab mob no khaws nws cov kev ua tau zoo txawm tias tom qab ntau tshaj 50 laundering cycles. Yog li ntawd, hydrogen- muaj cov roj silicone tau dhau los ua tus neeg sawv cev tseem ceeb rau siab -kawg sab nraum zoov fabrics thiab upholstery tawv.
Hauv kev tsim kho kev lag luam, nws nkag mus rau hauv micropores ntawm pob zeb thiab pob zeb thiab ua rau cov dej noo los ua cov khoom siv silicone, yog li muab cov khoom siv ntev ntev - kav ntev, sib sib zog nqus - zaum waterproofing.
3. Qhov nruab nrab rau kev hloov kho Silicone Roj: Tsav Kev Tsim Kho tshiab hauv cov khoom siv silicone
Los ntawm hydrosilylation cov tshuaj tiv thaiv nrog Si-H daim ntawv cog lus, hydrogen- muaj cov roj silicone ua lub hauv paus rau kev tsim kho tshiab hauv kev lag luam silicone los ntawm kev ua kom muaj kev sib txuas ntawm ntau yam siab - kev ua tau zoo hloov kho silicone roj.
Cov tshuaj tiv thaiv nrog allyl polyethers tsim polyether- hloov silicone roj, uas yog dav siv nyob rau hauv super defoamers thiab hydrophilic textile finishing agents. Kev hnov mob nrog cov amino- cov khoom sib txuas ua haujlwm yields amino- hloov cov roj silicone, cov khoom tseem ceeb hauv cov ntaub softeners.
Tsis tas li ntawd, hydrogen-muaj cov roj silicone ua cov khoom siv tseem ceeb rau kev tsim cov silane coupling agents, muab kev txhawb nqa tseem ceeb rau kev sib txuas thiab kev sib raug zoo ntawm cov khoom sib txawv.
4. Cov Khoom Pab Txhawb rau Siab -End Manufacturing: Txhawb Kev Lag Luam Tawm Tsam
Hauv kev lag luam semiconductor thiab photovoltaic, qis -volatility hydrogen- muaj cov roj silicone ua haujlwm ua ntej rau cov khoom siv hluav taws xob thiab cov txheej txheej txheej txheej txheej ntawm silicon wafers. Nws qhov tsis tshua muaj hluav taws xob tsis zoo thiab kev ruaj ntseg zoo ua rau lub sijhawm ntev - kev ntseeg siab ntawm cov ntim ntim thiab cov khoom siv hluav taws xob photovoltaic.
Hauv kev lag luam tsheb lub zog tshiab, hydrogen- muaj cov roj silicone yog siv rau hauv tus ntoo khaub lig- txuas thiab kho cov khoom ntim roj teeb, muab cov dej tsis zoo, thermal conductivity, thiab poob siab tsis kam thaum tswj kev ua tau zoo nyob rau hauv qhov kub ntawm -50℃txog 200℃.
III. Yav tom ntej Prospects: Expanding Application Horizons
Tsav los ntawm kev nce qib hauv cov ntaub ntawv tshiab, lub zog tauj dua tshiab, thiab biomedicine, daim ntawv thov ntawm hydrogen - muaj cov roj silicone txuas ntxiv mus.
Hauv kev siv biomedical, nws yog siv rau kev hloov kho saum npoo ntawm cov khoom siv dag zog kom txo tau txoj kev pheej hmoo ntawm thrombosis. Nyob rau hauv cov txheej txheem siab heev, nws yooj yim rau kev tsim cov txheej txheem ib puag ncig nrog kev txhim kho adhesion. Hauv kev sib txuas thev naus laus zis, nws txhim kho qhov adhesion ntawm silicone roj hmab rau substrates uas yog ib txwm nyuaj rau kev sib cog lus.
Los ntawm kev ua haujlwm tiav ntawm cov ntaub ntawv niaj hnub mus rau qhov tseeb kev tiv thaiv ntawm microchips, hydrogen -muaj cov roj silicone ua rau muaj ntau yam kev siv los ntawm qhov tshwj xeeb reactivity ntawm Si-H daim ntawv cog lus. Los ntawm kev txiav cov khoom siv los ntawm cov tshuaj tiv thaiv tshuaj, nws qhia txog lub luag haujlwm tseem ceeb ntawm cov khoom siv organosilicon hauv kev tsim khoom siab heev thiab qhia txog lawv qhov tseem ceeb hauv kev txhim kho ntawm - tiam tom ntej technologies.
