Kiyi yekutsvagisa uye kugadzirwa kwesilicone rabha muChina - dimethyldiethoxysilane

Basic inopisa vulcanized silicone rabha

China yakatanga kutsvagisa nekugadzira rabha mbishi yekupisa yakanyungudutswa (inozivikanwawo seyakarapwa kupisa) silicone rabha mukupera kwema1950.Hazvina kunonoka munyika kuti China yakatanga kuongorora silicone rabha.Nekuda kwebasa rekusimudzira rinoda huwandu hukuru hwepamusoro-purity hydrolysates ye dimethyldichlorosilane (kubva kunobva octamethylcyclotetrasiloxane (D4, kana DMC) inowanikwa; kare, nekuda kwekushaikwa kwehuwandu hwemethylchlorosilane, zvakaoma kuwana nhamba huru. ye dimethyldichlorosilane yakachena, uye haina kukwana kuti iedze kuburitsa iyo yakakosha silicone rabha octamethylcyclotetrasiloxane.Panodiwawo zvinokonzeresa mukuvhura mhete yepolymerization, ayo ari matambudziko makuru padanho rekutanga rebudiriro. kugadzirwa kwemaindasitiri kwemethylchlorosilane kwakaoma kwazvo, saka vashandi vehunyanzvi vezvikamu zvakakosha muChina vakabhadhara basa rakawanda uye vakapedza nguva yakawanda.

Yang Dahai, Shenyang Chemical Research Institute, nezvimwewo vakapa samples yesilicone rabha yakagadzirwa kubva kune yakazvigadzira yega dimethyldichlorosilane kusvika kumakore gumi ekuyeukwa kwezuva renyika.Lin Yi naJiang Yingyan, vaongorori veInstitute of chemistry, Chinese Academy of Sciences, vakaitawo kuvandudzwa kwemethyl silicone rabha kare.Mumakore ekuma1960, mamwe mayuniti akagadzira silicone rabha.

Chete mushure mekubudirira kweiyo yakananga synthesis yemethylchlorosilane mumubhedha wakamutswa, zvinogona kuwanikwa zvigadzirwa zve synthesis yeraw silicone rubber.Nekuti kudiwa kwesilicone rabha ndiko kukurumidza, saka kune mayunitsi muShanghai neNorth China ekutanga kugadzira silicone rabha.Semuenzaniso, Shanghai Chemical Research Institute muShanghai inodzidza kuumbwa kwemethyl chlorosilane monomer uye kuongorora uye bvunzo yesilicone rubha;Shanghai Xincheng makemikari chirimwa uye Shanghai resin chirimwa funga nezve synthesis yesilicone rabha kubva pamaonero ekugadzira.

Kuchamhembe, iyo Research Institute yeJihua kambani, indasitiri yemakemikari base muChina, inonyanya kuita tsvagiridzo nekusimudzira yekugadzira rabha.Gare gare, iyo yekutsvagisa yakawedzera kutsvagisa uye kusimudzira silicone rabha inotungamirwa naZhu BAOYING.Kune zvakare masisitimu ekugadzira uye zvidyarwa zvekugadzira mukambani yeJihua, ine yakanaka-yekumira yekubatana mamiriro ekugadzira yakazara seti yemaitiro kubva kumethyl chlorosilane monomer kune synthetic silicone rabha.

Muna 1958, iyo organosilicon chikamu cheShenyang Chemical Research Institute chakaendeswa kune ichangobva kugadzwa Beijing Chemical Research Institute.Mukutanga kwema1960, Shenyang Chemical Research Institute yakagadzira organosilicon Research Hofisi inotungamirwa naZhang Erci uye iwe Qingxuan kugadzira organosilicon monomer uye silicone rabha.Zvinoenderana nemaonero eSecond Bureau yeBazi reindasitiri yemakemikari, Shenyang Chemical Research Institute yakapinda mukugadzirwa kwesilicone rabha muInstitute Institute yeJilin makemikari kambani.Nekuti iyo synthesis yesilicone rubha inodawo vinyl mhete, saka Shenyang Chemical Research Institute ye synthesis yemethylhydrodichlorosilane uye mamwe anotsigira organosilicon monomers.

Yekutanga batch kugadzirwa kwesilicone rabha muShanghai "circuitous tactics"

Muna 1960, kambani yepurasitiki yeShanghai Chemical Industry Bureau yakapa Xincheng kemikari chirimwa basa rekugadzira silicon rabha inodiwa nekukurumidza neindasitiri yemauto.Nekuti chirimwa chine chloromethane, mushonga wezvipembenene ne-chigadzirwa che organosilicon raw material, ine mamiriro ekugadzira methyl chlorosilane, mbishi zvinhu zvesilicon rabha.Xincheng makemikari chirimwa idiki yeruzhinji-yakavanzika majoint venture chirimwa, ine vaviri chete mainjiniya matekiniki, Zheng Shanzhong naXu Mingshan.Vakaona nyaya mbiri dzakakosha dzehunyanzvi musilicone rubber research project, imwe ndeyekucheneswa kwedimethyldichlorosilane, imwe yacho kudzidza kwepolymerization process uye kusarudzwa kwecatalyst.Panguva iyoyo, organosilicon monomers nepakati zvakarambidzwa uye zvakavharwa muChina.Panguva iyoyo, zvirimo zvedimethyldichlorosilane mukugadzirwa kwemethylchlorosilane monomer mumubhedha wakamutswa mubhedha waive wakaderera, uye tekinoroji inoshanda ye distillation yakanga isati yaitwa, saka zvakange zvisingaite kuwana nhamba huru-yakachena dimethyldichlorosilane monomer seyakasvibira. zvinhu zvesilicone rubber.Naizvozvo, ivo vanogona chete kushandisa iyo dimethyldichlorosilane nekuchena kwakaderera iyo inogona kuwanikwa panguva iyoyo kugadzirira ethoxyl derivatives nedoroxysis.Chinhambwe chiri pakati penzvimbo yekubikira yemethyltriethoxysilane (151 ° C) nenzvimbo yekubikira ye dimethyldiethoxysilane (111 ° C) mushure mekudhakwa kwakakura, uye mutsauko wekubikira wakawanda se40 ° C, zviri nyore kupatsanura, saka iyo dimethyldiethoxysilane ine kuchena kwepamusoro inogona kuwanikwa.Zvadaro, dimethyldiethoxysilane yakaitwa hydrolyzed kune octamethylcyclotetrasiloxane (methyld4).Mushure mekupatsanurwa, kuchena kwepamusoro D4 kwakagadzirwa, iyo yakagadzirisa dambudziko rezvinhu zvakasvibirira zvesilicone rubber.Vanodaidza nzira yekuwana D4 nenzira dzisina kunanga dzedorolysis "circuitous tactics".

Muchikamu chekutanga chekutsvagisa nekuvandudzwa kwesilicone rubber muChina, pakanga paine kusanzwisisa kweiyo synthesis process yesilicone rabha munyika dzekumadokero.Mamwe mayunitsi akanga aedza zvechinyakare ring kuvhura catalysts akadai sulfuric acid, ferric chloride, aruminiyamu sulfate, etc. Zvadaro, residual catalyst iri mumazana ezviuru zvemamorekuru huremu mbishi silica gel inogezwa nemvura yakadirwa pane kaviri roller, saka inzira isingafadzike kushandisa iyi yakavhurika-loop catalyst.

Zheng Shanzhong naXu Mingshan, iwo maviri anokonzeresa zvenguva pfupi anonzwisisa yakasarudzika zvivakwa, vanofunga kuti ine hungwaru uye hunhu hwepamberi.Iyo haingogone kuvandudza mhando yesilicone rubber, asi zvakare kurerutsa zvakanyanya basa rekumashure-kugadzirisa.Panguva iyoyo, nyika dzekunze dzakanga dzisati dzashandiswa kugadzira maindasitiri.Vakasarudza kugadzira tetramethyl ammonium hydroxide uye tetrabutyl phosphonium hydroxide vari voga, ndokuzvienzanisa.Vaifunga kuti yekutanga yaigutsa, saka iyo polymerization process yakasimbiswa.Zvadaro, mazana emakirogiramu e-transparent uye akajeka silicone rubber akagadzirwa kuburikidza ne-self-designed uye yakagadzirwa midziyo yekufambisa ndege.Muna Chikumi 1961, Yang Guangqi, director weSecond Bureau yeBazi reindasitiri yemakemikari, akauya kufekitari kuzoongororwa uye akafara zvikuru kuona zvigadzirwa zverabha zvesilicone.Kunyange zvazvo mutengo werabha unogadzirwa nenzira iyi wakanyanya kukwirisa, iyo silicone rabha inogona kugadzirwa yakawanda inorerutsa kudiwa kwekukurumidzira panguva iyoyo.

Shanghai resin fekitori, inotungamirwa neShanghai Chemical Industry Bureau, yakatanga kumisa 400mm dhayamita inomutsa mubhedha muChina kugadzira methyl chlorosilane monomers.Yaive bhizinesi yaigona kupa methyl chlorosilane monomers mumabhechi panguva iyoyo.Mushure meizvozvo, kuti ikurumidze kusimudzira indasitiri yesilicone muShanghai uye kugadzirisa simba resilicone, Shanghai Chemical Bureau yakabatanidza Xincheng kemikari chirimwa neShanghai resin chirimwa, ndokuenderera mberi nekuita bvunzo yekuenderera mberi synthesis process mudziyo wekushisa kwakanyanya vulcanized silicone. rabha.

Shanghai Chemical Industry Bureau yakamisa musangano wakasarudzika wesilicone oiri uye silicone kugadzirwa kwerabha muShanghai resin fekitori.Shanghai resin fekitori yakabudirira kuyedza kugadzira iyo yakakwira vacuum diffusion pombi yemafuta, maviri-chikamu tembiricha yekamuri yakavhenekerwa silicone rabha, phenyl methyl silicone oiri uye zvichingodaro, izvo zvakarambidzwa nenyika dzekunze.Shanghai resin fekitori yave fekitori yakazara inogona kugadzira akawanda marudzi ezvigadzirwa zvesilicone muChina.Kunyangwe muna 1992, nekuda kwekugadziriswa kwemaindasitiri muShanghai, Shanghai resin fekitori yaifanira kusiya kugadzirwa kwemethyl chlorosilane nemamwe mamonomers, uye panzvimbo pacho yakatenga mamonomers uye epakati kuti agadzire zvigadzirwa zvepasi.Nekudaro, fekitori yeShanghai resin ine mupiro usingadzimiki mukusimudzira organosilicon monomers uye organosilicon polymer zvinhu muChina.