High-hydrogen silicone roj yog polysiloxane nrog cov ntsiab lus hydrogen siab. Nws cov qauv molecular muaj ntau tus nquag Si-H (silicon-}hydrogen) bonds. Nws cov yam ntxwv tseem ceeb yog qhov muaj zog reactivity, tso cai rau nws mus rau crosslinking los yog ntxiv cov tshuaj tiv thaiv nrog rau lwm pab pawg neeg, xws li hydroxyl thiab vinyl pawg, los ntawm cov Si-H bonds. Raws li qhov tshwm sim, nws tau siv dav hauv cov khoom siv hloov kho thiab cov khoom siv silicone.
Physicochemical Properties
Cov cim tseem ceeb tshaj plaws ntawm hydrogen- muaj cov roj silicone yog cov ntsiab lus hydrogen, acid tus nqi, thiab cov ntsiab lus tsis hloov pauv. Ntawm cov kev txwv no, cov ntsiab lus hydrogen ntau dua feem ntau qhia tias muaj zog crosslinking reactivity.
Cov cheeb tsam thov
1. Cov tshuaj tiv thaiv dej
Hydrogen-muaj cov roj silicone siv cov nonpolar Si-O caj qaum thiab methyl pawg (-CH₃) los tawm tsam cov dej noo. Nyob rau hauv qhov kev txiav txim ntawm ib tug catalyst, nws muaj peev xwm crosslink ntawm kuj tsis tshua muaj kub los tsim ib tug tuab tiv thaiv zaj duab xis. Cov yeeb yaj kiab no ua haujlwm ruaj khov rau ntawm qhov chaw substrate los ntawm kev sib koom ua ke ntawm cov tshuaj lom neeg, muab cov dej tsis zoo thiab ruaj khov, tiv thaiv dej noo, thiab kev txhawb zog. Nws yog dav siv hauv cov khoom siv hauv tsev, kev kho mob substrate, fabric finishing, hmoov cov ntaub ntawv, thiab lwm yam kev siv.
2. Vulcanizing Agents thiab Crosslinking Agents
Siab -hydrogen- cov ntsiab lus silicone roj yog feem ntau suav nrog ntawm 10-20% hauv cov qauv vulcanizing tus neeg sawv cev. Raws li platinum (Pt) catalyst catalyst, nws ua hauj lwm raws li tus neeg sawv cev crosslinking ntxiv rau -kho kua silicone roj hmab (LSR). Hauv cov kua roj hmab silicone, qhov kev siv ntau npaum li cas ntawm siab -hydrogen- cov ntsiab lus silicone roj yog kwv yees li 2%.
3. Kev kho deg ntawm Magnesium Oxide hmoov
Hloov kho magnesium oxide hmoov feem ntau yog muab faib ua qib hluav taws xob thiab qib refractory, nyob ntawm daim ntawv thov. Refractory- qib magnesium oxide hmoov feem ntau tsis xav tau kev tiv thaiv dej noo. Txawm li cas los xij, thaum npaj hluav taws xob- qib magnesium oxide hmoov, hydrogen- muaj cov roj silicone ntxiv los ua cov dej noo- pov thawj los txhim kho nws cov kev ua tau zoo thiab ruaj khov.
4. Kev tsim cov roj silicone hloov
High-hydrogen silicone roj yog ib qho tseem ceeb raw khoom rau synthesis ntawm ntau yam hloov silicone roj. Los ntawm cov tshuaj tiv thaiv hydrosilylation, nws tuaj yeem hloov mus rau hauv polyether- hloov pauv roj silicone, alkyl{3}} hloov cov roj silicone, epoxy- hloov cov roj silicone, thiab lwm yam khoom siv silicone. Cov ntaub ntawv no tau siv dav hauv cov khoom ua npuas dej, cov khoom ua kom tiav, thiab ntau daim ntawv thov tshwj xeeb.
5. Lubricants thiab tso tawm cov neeg sawv cev
High-hydrogen silicone roj tuaj yeem siv los ua cov roj nplua nyeem thiab tso tawm tus neeg sawv cev hauv kev ua cov roj hmab thiab cov yas. Nws txo qhov hnav hauv bearings thiab lub zog, txhawb cov khoom tso tawm thaum lub sijhawm ua haujlwm molding, thiab txhim kho kev tsim khoom. Nws kuj yog siv dav hauv kev tsim cov khoom siv roj hmab, ua ntawv, kho cov iav fiber ntau, thiab cov kua nplaum ntau lawm.
Cov duab khoom
