Utomoni wagalasi la silicone ndi zomatira zomata za silicone za mica.
Huo Changshun ndi Chen Rufeng ochokera ku Chenguang Chemical Research Institute, Unduna wa Zamankhwala, ndi zina zambiri akupanga utomoni wagalasi wa silikoni ndi zomatira za mica kutentha kwambiri ku China.Chakumapeto kwa zaka za m'ma 1970, cts-103 silicone resin, yomwe imadziwika kuti "silicone glass resin", idapangidwa bwino ndi hydropolycondensation ya methyltriethoxysilane pamaso pa chothandizira asidi.Utoto unkagwiritsidwa ntchito pochiza mapepala apamwamba, kuteteza zitsulo pamwamba pa zitsulo, ndi kumangirira pepala la mica kapena mica powder kumayambiriro.Mu 1980, Sanhua, Xue Zhiqing ndi Li Yansheng, opanga utomoni ku Shanghai, motsatana, adagwiritsa ntchito utomoni wokhazikika wa cation ngati chothandizira kwakanthawi kwa asidi.Ma resins owoneka bwino komanso osavala a silicone a sar-1 ndi sar-2 adapangidwa powonjezera pang'ono dimethyldiethoxysilane mu monomethyltriethoxysilane yayikulu.Palibe asidi wotsalira wa inorganic mu utomoni, kotero kusungirako kwa mankhwalawa kumakhala kokhazikika, ndipo palibe simenti yomwe imapezeka patatha chaka.Chifukwa cha kuyambika kwazinthu zochepa zopangira difunctional, mankhwala a sar-2 ndi olimba, apakati komanso ofewa, okhala ndi ntchito zambiri.Ikhoza kugwiritsidwa ntchito kwambiri mu galasi, pulasitiki, zitsulo ndi zipangizo zina, makamaka pofuna kuteteza mapulasitiki oonekera monga polycarbonate, polystyrene ndi PVC, komanso chifukwa cha chinyezi-umboni ndi kutchinjiriza chitetezo ❖ kuyanika zipangizo zamagetsi, amene posachedwapa kupanga lalikulu- kupanga sikelo.
Kuyambira 1980 mpaka 1982, Qi hongqiu, Li Yan ndi Cui Zuoming ochokera ku Chenguang Chemical Research Institute, ndipo kuyambira 1981 mpaka 1983, Xu Zhihong ndi Xue Zhiqing ochokera ku fakitale ya resin ku Shanghai adagwiritsa ntchito methyltrichlorosilane ngati zida zazikulu zopangira zomatira za silicone.Magulu azogulitsa ndi mr-30 ndi sar-8 motsatana.Kuphatikiza pa kukana kutentha kwambiri, kutchinjiriza kwamagetsi, kutsimikizira chinyezi, kutsimikizira madzi ndi zinthu zina zazinthu zambiri za organosilicon, zinthuzo zimakhalanso ndi zomatira kwambiri komanso zoletsa moto.Amagwiritsidwa ntchito kwambiri popanga kutentha kosagwira ufa mtambo mama board, magetsi chubu kutchinjiriza, kutentha kugonjetsedwa ndi ufa mtambo mayi bolodi thandizo, mica bolodi kutembenukira mkati kutchinjiriza wa makina kuwotcherera magetsi, etc. Mitundu yosiyanasiyana kutentha zosagwira inki akhoza kuwonjezeredwa monga zokutira zopanda utsi komanso zotsutsana ndi dzimbiri, ndipo zitha kugwiritsidwanso ntchito ngati utomoni wosayaka kapena utomoni wa ceramic wopangidwa ndi magalasi opangidwa ndi laminate ndi silika.China ili ndi zinthu zambiri za ufa wa mica, zomwe zimatha kupangidwa kukhala mndandanda wazinthu zambiri zoteteza kutentha kwa mica board.
Jiangxi Huahao amagwira ntchito yopanga dimethyldiethoxysilane
Sar-8 ndi sar-9 wa Shanghai utomoni fakitale amatengera ndondomeko khalidwe njira yawo: hydrolyze ndi alcoholysis organosilicon monomers ndi kuganizira ndi polycondensate pa nthawi yomweyo.Sar-8 ndi sar-9 adapangidwa mu 1983, ndipo zotsatira zake zafika pafupifupi matani chikwi.Zopangira zazikulu za mankhwalawa ndi methyltrichlorosilane, kotero kaya mr-30 kapena sar-8 kapena sar-9 amapangidwa, mtengo wogwiritsa ntchito methyltrichlorosilane ukhoza kusintha kwambiri.
Mapulasitiki opangidwa ndi Organosilicon
M'zaka za m'ma 1960, makampani oyendetsa ndege ku China adafunikira mwachangu mtundu wa pulasitiki wosamva silikoni wa nkhungu womwe umatha kupirira mphamvu zapano komanso zamphamvu kwambiri popanga masiwichi ang'onoang'ono.Beijing Research Institute of Chemical industry yapanga bwino utomoni wa silikoni womwe umapangidwa mwachindunji kuchokera ku methyltrichlorosilane ndikupangidwa kukhala pulasitiki yolimbana ndi nkhungu yokhala ndi asbestos filler, yomwe yathetsa kufunikira kwamakampani oyendetsa ndege.Zinthuzo zidasamutsidwa ku fakitale ya resin ya Shanghai kuti ipangidwe.Komabe, ogwiritsa ntchito amafunikirabe zinthu zamtunduwu, motero amayenera kupempha thandizo kuchokera ku Chenguang Chemical Research Institute, yomwe idasamukira ku Chigawo cha Sichuan.Pofuna kukwaniritsa zosowa zachangu za ogwiritsa ntchito, Wu Shengquan et al.A Institute ntchito hydrolysis condensation njira ku methyltriethoxysilane monga mfundo poyambira kukonzekera silikoni utomoni akamaumba mapulasitiki ndi ntchito zogwira mtima, kuti athetse mavuto mwamsanga owerenga.
Silicone resin kusindikiza zakuthupi
Chakumapeto kwa zaka za m'ma 1960, ndi chitukuko cha makampani amagetsi aku China, m'pofunika kugwiritsa ntchito zipangizo zosindikizira za silikoni zokhala ndi magetsi abwino kwambiri, kukana kutentha kwambiri, kutentha kwa chinyezi, kutentha kwa chinyezi komanso kusayaka kuti mupange ma diode amphamvu ndi ang'onoang'ono, ma triodes, resistors, capacitors, mabwalo ophatikizika ndi zida zina zamagetsi.Ku China, Zhang Xinghua, He Jigang, et al.Za Institute of chemistry ya Chinese Academy of Sciences, ndi Zhang Jikai, Li Yansheng, et al.Wa Shanghai utomoni fakitale anali oyambirira chinkhoswe mu chitukuko cha utomoni wotero.Anapanga mankhwala osiyanasiyana kuti athetse kusiyana kwapakhomo.
Silicone resin kusinthidwa zokutira
Silicone wamba nthawi zambiri amakhala polymethylsiloxane ndi polyphenylsiloxane.Kugwirizana kwa utomoni wa silikoni wokhala ndi phenyl ndi organic resin ndikwabwino kuposa utomoni wa methyl silicone.Kukana kwa kutentha ndi kukana kwamadzi kwa zokutira wamba kumatha kuwongolera poyambitsa silicone ya phenyl mkati mwake.M'makampani okutira, siloxane yogwira ntchito kwambiri yokhala ndi zokutira imatha kukonzedwa mwa kuphatikiza kapena copolymerization ya phenyl yokhala ndi utomoni wa silikoni.Kumayambiriro kwa zaka za m'ma 1960, fakitale ya utoto ya Tianjin ndi fakitale ya Shanghai ya resin idapanga bwino ❖ kuyanika kwa utomoni wosinthidwa wa silikoni.Mitundu yosiyanasiyana ya zinthu zabwino zapangidwa, monga silikoni yosinthidwa epoxy resin yokhala ndi kutentha kwabwino komanso kumamatira.
Nthawi yotumiza: Sep-24-2022