Mapangidwe oyambirira a mafuta a silicone

Chikhalidwe 1:

Chemical bond Siloxilicone bond (Si-O-Si):kuzizira, kupanikizika, kutsika kwa nthunzi, kukana kwa thupi / kutentha, kukana kwa malawi, kukana kwa okosijeni, kukana kwa corona, kukana kwa arc, kukana kwa kuwala, kukana kwa dielectric, kukana kwanyengo.

Silicon carbon bond (Si-C):kukana kuzizira, kupanikizika, kutsika kwa nthunzi, kuchitapo kanthu kwa thupi / pamwamba, hydrophobic, kumasulidwa, kuwonongeka.
Kapangidwe kazinthu ziwiri: maselo anayi

Kapangidwe kachitatu: gulu la silicon methyl ndilofunika kwambiri

methyl silicon carbon bond ndiye chomangira chokhazikika cha silicon carbon; Kukhalapo kwa silikoni methyl kumapereka mafuta a silicone apadera; Mitundu yonse ya mafuta a silikoni ndi yochokera ku mafuta a methyl silikoni; Mafuta a silikoni otumphukira amatchulidwa m'magulu ena osati magulu a methyl.

Gulu la mafuta a silicon

Mafuta a silicone a inert:mu ntchito zambiri satenga nawo mbali zimachitikira mankhwala, kwambiri ntchito katundu silikoni mafuta, osati mankhwala katundu. Monga: methyl silikoni mafuta, phenyl silikoni mafuta, polyether silikoni mafuta, yaitali alkyl silikoni mafuta, trifluoropropyl silikoni mafuta, ethyl silikoni mafuta, etc.

Mafuta a silicone omwe amagwira ntchito: ali ndi gulu lowoneka bwino, lomwe nthawi zambiri limakhudzidwa ndi machitidwe amankhwala omwe amagwiritsidwa ntchito.
Monga: hydroxysilicone mafuta, vinyl silikoni mafuta, haidrojeni silikoni mafuta, amino silikoni mafuta, sulfhydryl silikoni mafuta. Mafuta a silicone ndi mtundu wapadera wamadzimadzi amafuta okhala ndi silicon carbon bond ndi silicon silicon bond. Silicon methyl imapereka ntchito zapamtunda, hydrophobic, ndi kumasulidwa; kapangidwe ka silicon kumapereka kukhazikika (inert) ndi zinthu zabwino kwambiri zamagetsi.

Common silikoni mafuta chiyambi
mafuta a methylsilicone
Tanthauzo:Magulu onse a organic mu kapangidwe ka maselo ndi magulu a methyl.
Mawonekedwe:kukhazikika kwamafuta abwino; dielectric yabwino; hydrophobicity; mamasukidwe akayendedwe ndi defamescence. The zofunika kwambiri malonda, silikoni mafuta (201, DC200, KF 96, TSF451).
Njira yokonzekera:Konzekerani pogwiritsa ntchito equilibrium reaction.
Makhalidwe amatanthauza:mamasukidwe akayendedwe nthawi zambiri ntchito kuimira polymerization wa silikoni mafuta, mamasukidwe akayendedwe ntchito kusiyanitsa mankhwala, ndi kaphatikizidwe mosalekeza wa mamasukidwe akayendedwe methyl silikoni mafuta m'munsimu 50mPa.s.
Zokonzekera:50mPa.s Commercial methylsilicone mafuta, hexamethyldisiloxane (wothandizira mutu), macroporous acid cationic resin.
flash system.
Chipangizo chokonzekera:ndime reaction yodzazidwa ndi utomoni, vacuum kung'anima dongosolo.
Mwachidule:Sakanizani mafuta a silikoni a methyl ndi chogawanitsa molingana ndi gawo la zomwe zimachitika, ndikuwunikira kuti mutenge mafuta omalizidwa a silikoni.

ali ndi hydrogen silikoni mafuta.

Mafuta a silicone omwe ali ndi Si-H bond (KF 99, TSF484)
Magawo awiri odziwika bwino:

Kukonzekera ndi njira ya asidi acid:

Zogwiritsa ntchito kwambiri:silicon hydrogen kuwonjezera zopangira, zowonjezera za mphira za silikoni, wothandizila wopanda madzi.

Amino silikoni mafuta
Tanthauzo:mafuta a silicone omwe ali ndi gulu la hydrocarbon amino.
Magawo odziwika bwino:

Ntchito zazikulu:kumaliza nsalu, kutulutsa nkhungu, zodzoladzola, kusinthidwa kwachilengedwe.

Mafuta a vinyl a silicone

Magawo odziwika bwino:

Kukonzekera kwa equilibrium reaction:

Gwiritsani ntchito:Gwiritsani ntchito vinyl kuti mupange guluu woyambira komanso kusintha kwachilengedwe.

Mafuta a Hydroxysilicon
Tanthauzo:polysiloxane.
Njira yophatikizira yolemera kwambiri ya mamolekyulu:

Njira yochepetsera kulemera kwa maselo:

Mafuta a silikoni a hydroxyl:
107 zomatira:mafuta olemera a molekyulu a hydroxysilicone (kukhuthala kwa 1000mPa.s pamwambapa), monga mphira wopangidwa ndi mphira (kuphatikiza gulu la phenyl la zomatira 108).
Mafuta otsika a hydroxyl molecular:Ma hydroxyl opitilira 6%, owongolera opangidwa, fluorinated hydroxyl mafuta kuti azitha kuwongolera mwadongosolo labala la fluorosilicone.
Mtundu wa mzere:mamasukidwe akayendedwe 100mPa.s ~ 1000mPa.s, zambiri ntchito lithe kusinthidwa silikoni mafuta.

Phenyl silicone mafuta

Kugwiritsa ntchito mafuta a phenyl silicone:Mafuta a phenyl apamwamba a silicone amagwiritsidwa ntchito potentha kwambiri komanso kutentha kwambiri. Mafuta otsika a phenyl amafuta a silicone otsika kutentha ndi abwino, omwe amagwiritsidwa ntchito pazofunikira kukana kuzizira. The refractive mlingo wa phenyl silikoni mafuta ndi lalikulu kwambiri kuchokera 1.41 mpaka 1.58, amene ali oyenera ntchito ndi refractive mlingo zofunika.
Mafuta apadera a silicone a phenyl:

Mafuta a silicone a polyether

Mwachidule:ndi kusiyana kwa ntchito gawo la unyolo wa polyether ndi gawo la unyolo wa polyether, kudzera m'maunyolo amankhwala, gawo la hydrophilic polyether unyolo limapereka gawo lake la hydrophilic, polydimethyl siloxane unyolo limapereka kugwedezeka kwapang'onopang'ono, komanso mapangidwe amitundu yonse yazinthu zakumtunda, kuyang'ana kwa polyethylene silicone mafuta. kafukufuku ndi chitukuko ndi ntchito kuwunika, ambiri kaphatikizidwe njira, yabwino kamangidwe kusintha, mu chiphunzitso akhoza lithe wopandamalire zosiyanasiyana mafuta polyether silikoni, kuchokera dongosolo sangathe kudziwa ntchito yake ntchito, kuwunika ntchito ndi cholinga cha ntchito.
Kugwiritsa ntchito polyether silicone mafuta:polyurethane thovu thovu wothandizira (L580), ❖ kuyanika mlingo wothandizila (BYK 3 prefix), surfactant (L-77), nsalu kumaliza wothandizira (softener), madzi kumasulidwa wothandizila, antistatic agent, defoaming wothandizira (self-emulsifying mtundu).