Silicone Polyether yog dab tsi?
Silicone polyether yog ib hom polymer uas feem ntau siv rau ntau yam kev lag luam thiab cov neeg siv khoom. Nws yog lub npe hu rau nws cov khoom tshwj xeeb, suav nrog kev ua haujlwm kub zoo, tiv thaiv dej, thiab tsis tshua muaj qhov nro. Hauv tsab xov xwm no, peb yuav tshawb xyuas cov khoom thiab kev siv ntawm silicone polyether, nrog rau nws cov synthesis thiab kev tsim khoom.
Cov khoom ntawm Silicone Polyether
Silicone polyether yog ib copolymer uas muaj ob qho tib si silicone thiab polyether ntu. Kev sib xyaw ntawm ob ntu no muab cov polymer nws cov khoom tshwj xeeb. Lawv suav nrog:
- Cov cua sov zoo heev: Silicone polyether tuaj yeem tiv taus qhov kub thiab txias, ua rau nws zoo tagnrho rau kev siv hauv cov ntawv thov uas muaj kev txhawj xeeb.
- Kev tiv thaiv dej: Cov ntu polyether hauv cov polymer ua rau nws muaj dej-tiv taus. Cov cuab yeej no ua rau silicone polyether haum rau kev siv hauv cov khoom xws li cov txheej txheem dej tsis zoo, cov sealants, thiab cov nplaum.
- Tsis tshua muaj qhov nro: Lwm qhov txiaj ntsig ntawm silicone polyether yog nws qhov nro qis. Cov cuab yeej no ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev siv hauv surfactants.
- Hluav taws xob rwb thaiv tsev zoo: Vim nws cov khoom siv insulating, silicone polyether kuj tuaj yeem siv rau hauv kev siv hluav taws xob.
- Tshuaj tiv thaiv: Silicone polyether muaj cov tshuaj tiv thaiv zoo, ua rau nws tsim nyog siv rau hauv qhov chaw hnyav uas raug tshuaj lom neeg muaj kev txhawj xeeb.
Kev siv Silicone Polyether
Silicone polyether muaj ntau yam kev siv vim nws cov khoom tshwj xeeb. Qee qhov ntawm nws cov kev siv feem ntau suav nrog:
- Waterproof coatings: Cov dej-repellent zog ntawm silicone polyether ua rau nws haum rau siv nyob rau hauv waterproof txheej rau fabrics, ntawv, thiab lwm yam ntaub ntawv.
- Sealants thiab adhesives: Silicone polyether feem ntau yog siv rau hauv sealants thiab adhesives vim nws cov dej tsis zoo thiab adhesion zog.
- Surfactants: Qhov qis ntawm qhov nro ntawm silicone polyether ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev siv cov surfactants, uas yog siv rau ntau yam kev lag luam, xws li hauv kev tsim cov xim thiab coatings.
- Cov khoom siv kho mob tus kheej: Silicone polyether kuj tseem siv rau hauv cov khoom tu tus kheej, xws li tshuaj zawv plaub hau thiab tshuaj kho mob, vim tias nws muaj peev xwm muab lub ntsej muag zoo nkauj.
- Lubricants: Cov khoom tshwj xeeb ntawm silicone polyether ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev siv roj nplua nyeem.
- Cov ntawv thov hluav taws xob: Cov khoom siv hluav taws xob ntawm silicone polyether ua rau nws tsim nyog rau kev siv hluav taws xob, xws li hauv kev tsim cov khoom siv hluav taws xob.
Synthesis thiab Manufacturing ntawm Silicone Polyether
Silicone polyether yog tsim los ntawm copolymerization ntawm silicone monomer thiab polyether monomer. Cov txheej txheem no tuaj yeem ua tiav siv ntau hom kev kawm, suav nrog emulsion polymerization thiab kua polymerization.
Emulsion polymerization koom nrog kev siv tus neeg sawv cev emulsifying los tsim kom muaj kev ncua ruaj khov ntawm cov monomers hauv dej. Qhov no tso cai rau lub copolymerization tshwm sim nyob rau hauv ib qho chaw aqueous. Cov khoom uas tshwm sim yog ib qho emulsion ruaj khov uas tuaj yeem siv rau ntau yam kev siv.
Kev daws teeb meem polymerization yog lwm txoj hauv kev uas tuaj yeem siv los tsim cov silicone polyether. Hauv cov txheej txheem no, cov monomers yog yaj hauv cov kuab tshuaj uas tsim nyog, thiab cov copolymerization tshwm sim hauv cov tshuaj. Txoj kev no yog qhov zoo dua thaum muaj kev tswj hwm qib siab ntawm cov tshuaj tiv thaiv yog tsim nyog.
Thaum ua ke, silicone polyether tuaj yeem ua tiav rau hauv ntau hom sib txawv, suav nrog kua, gels, thiab cov khib nyiab. Cov ntawv sib txawv no tso cai rau cov polymer siv rau ntau yam kev siv sib txawv.
Xaus
Silicone polyether yog ib qho tshwj xeeb polymer uas muaj ntau yam khoom uas ua rau nws tsim nyog siv rau ntau yam kev siv sib txawv. Nws cov cua kub tsis kam, tiv thaiv dej, tsis tshua muaj zog, thiab cov khoom siv insulating ua rau nws muaj kev xaiv nrov hauv kev lag luam xws li kev tsim kho, hluav taws xob, thiab kev saib xyuas tus kheej. Kev sib xyaw thiab kev tsim khoom ntawm silicone polyether yog ua los ntawm kev siv ntau hom kev ua haujlwm uas tso cai rau cov copolymerization ntawm silicone thiab polyether monomers. Zuag qhia tag nrho, silicone polyether yog cov khoom tseem ceeb uas ua lub luag haujlwm tseem ceeb hauv ntau cov khoom lag luam thiab cov neeg siv khoom.
