Kusiyana pakati pa silicone ndi mphira wa silicone

Labala ya silikoni imagwiritsidwa ntchito kwambiri, koma anthu ena sangathe kusiyanitsa pakati pa mphira wa silikoni ndi gel osakaniza, ndipo dzina silinaganizidwe.Masiku ano, mkonzi adzayang'anitsitsa kusiyana ndi magulu pakati pa silicone ndi mphira wa silicone.Pakalipano, lingaliro la mawu akuti "silicone" silinakhazikitsidwe.Mpaka pano, palibe dzina lodziwika bwino.Mukamva mawu akuti "silika gel osakaniza", muyenera kumvetsa ngati gel osakaniza silica kapena silikoni munali mphira kupanga, kapena ndi inorganic silika gel osakaniza kapena organic silika gel osakaniza pomaliza.

"Gelisi ya silika" imatchulidwa ndi mawu angapo ofananira monga mphira wa silikoni, mphira wa silikoni, ndi silikoni.Ubale pakati pa mphira wa silikoni ndi gel osakaniza ndi wosiyana ndi mphira wa silikoni ndipo umaphatikizapo mphira wa silikoni.Rabara ya silicone ndi organic "silica gel" ya "silica gel"."Silicone" ndi mawu omwe amagwiritsidwa ntchito ku Hong Kong ndi Taiwan.Amatchedwa "silicone" ku China.Silicone ndi Silicone ndi zomasulira za silikoni ya Chingerezi.Nthawi zambiri amanenedwa kuti amatanthauzanso "silicone".

Mwachidule, silika gel osakaniza akhoza kugawidwa m'magulu awiri, organic silika gel osakaniza ndi inorganic silika gel osakaniza, malinga ndi katundu ndi kapangidwe.Choyamba, ndikufotokozera za mphira wa silicone.

1. Silicone mphira ntchito ndi magawo luso

Rabara ya silicone ndiye gulu lalikulu kwambiri komanso logwiritsidwa ntchito kwambiri pazinthu za silicone.Pambuyo pa vulcanization, mphira wa silikoni umalimbana kwambiri ndi kutentha, kukana kutentha pang'ono, kukana kwa nyengo, kuthamangitsa madzi, kutsekemera kwamagetsi, ndi kuzizira kwa thupi.

Zofunika Kwambiri ndi Kugwiritsa Ntchito Zida Zampira wa Silicone: Malingana ndi kutentha kwawo kwa vulcanization, mphira wa silicone ukhoza kugawidwa m'magulu awiri: kutentha kwambiri (kutentha) vulcanization ndi kutentha kwa chipinda.Labala yotentha kwambiri imagwiritsidwa ntchito kwambiri popanga zinthu zosiyanasiyana za mphira wa silikoni, pomwe mphira wa kutentha kwachipinda umagwiritsidwa ntchito makamaka ngati zomatira, zomangira, ndi nkhungu.

mphira wotentha wa vulcanized silicone (HTV)

Heat vulcanized silicone rabara (HTV) ndiye gulu lofunika kwambiri la zinthu za silikoni, ndipo mphira wa methyl vinilu silikoni (VMQ) ndiye gulu lofunika kwambiri la HTV lomwe limadziwika kuti mphira wotentha kwambiri.Rabara ya silicone ya methyl vinyl (raba yaiwisi) ndi yopanda utoto, yopanda fungo, yopanda poizoni komanso yopanda zonyansa zamakina.Labala yaiwisi imasakanizidwa ndi zolimbitsa zoyenerera, zowongolera zamapangidwe, mavulcanizer ndi zina zowonjezera ngati pakufunika.Kuyeretsedwa, Kutentha, psinjika kapena extrusion, kutsatiridwa ndi masitepe awiri vulcanization mu zosiyanasiyana mankhwala.Zogulitsa zake zimakhala ndi magetsi abwino kwambiri, kukana kwamphamvu kwa ma arcs, ma coronas, ndi spark, osalowa madzi, umboni wa chinyezi, kukana kwamphamvu, kukana kwamphamvu, kukhazikika kwa thupi, kupuma ndi zina.Amagwiritsidwa ntchito makamaka mu ndege, zida, zamagetsi ndi zida, kuyenda, zitsulo, makina, magalimoto, zamankhwala ndi zaumoyo, ndi magawo ena, ndipo angagwiritsidwe ntchito kupanga mphete zosindikizira, ma gaskets, machubu, ndi zingwe zosiyanasiyana.Ziwalo za anthu, mitsempha ya magazi, nembanemba zopumira ndi nkhungu za mphira, zotulutsa nkhungu poponya mwatsatanetsatane, ndi zina zambiri.

Kutentha kwa chipinda vulcanized silicone rabara (RTV)

RTV silikoni mphira zambiri ali magulu awiri: condensed mtundu ndi zina zowonjezera."Zomatira za kutentha kwa chipinda chowonjezera zimakhazikitsidwa ndi polysiloxane yokhala ndi gulu la vinyl, imagwiritsa ntchito siloxane yokhala ndi hydrogen ngati cholumikizira cholumikizira, ndipo imagwira ntchito yolumikizana ndi kutentha kwapakati mpaka kutentha kwapakati pamaso pa chothandizira kukhala elastomer.Ili ndi zotchingira bwino kwambiri zamadzi komanso kutsekereza kwamagetsi, ndipo nthawi yomweyo imakhala ndi zinthu zabwino kwambiri zakuthupi komanso zamakina monga kulimba kwamphamvu, kutalika kwapang'onopang'ono, komanso mphamvu yong'ambika chifukwa choyambitsa magulu omwe akugwira ntchito.Ma radiation sulphurization ndi kuwonjezera peroxide.Ndiwoyenera kunjira zosiyanasiyana za sulfure monga sulfure ndi kuwonjezera kuumba sulfure, ndipo amagwiritsidwa ntchito kwambiri polimbana ndi kutentha, kukana chinyezi, kutchinjiriza kwamagetsi, ndi zida za mphira zamphamvu za silicone.

Rabara ya silikoni yotentha yamtundu wa condensation imadziwika ndi kusinthasintha kwapakati pa silikoni hydroxyl ndi zida zina zogwira ntchito, ndipo imalumikizidwa ndi kutentha kwachipinda kuti ipange elastomer.Zogulitsa zimagawika m'mapaketi agawo limodzi ndi zigawo ziwiri.mawonekedwe.Chigawo chimodzi chopangidwa ndi mphira wa silicone (rabala ya RTV-1 mwachidule) ndi chimodzi mwazinthu zazikulu za mphira wopindika wa silikoni.Nthawi zambiri amapangidwa kuchokera ku ma polima oyambira, crosslinkers, catalysts, fillers ndi zowonjezera.Mankhwalawa ndi abwino kwambiri chifukwa amadzaza mu payipi yosindikizidwa, yofinyidwa panthawi yogwiritsidwa ntchito, poyera mpweya ndiyeno amalowetsedwa mu elastomer.The mankhwala vulcanized angagwiritsidwe ntchito kwa nthawi yaitali mu kutentha osiyanasiyana (-60 kuti + 200 ° C), ali kwambiri kutchinjiriza magetsi ndi kukhazikika kwa mankhwala, ali ndi madzi abwino kwambiri, ozoni, ndi kukana nyengo, ndipo ali adhesion kwambiri zitsulo zosiyanasiyana.wonjezani.Ndipo zinthu zopanda zitsulo.Kufikika.Imagwiritsidwa ntchito kwambiri popaka zida zosiyanasiyana zamagetsi ndi zida zamagetsi, ndipo imagwira ntchito ngati kutchinjiriza, kutsimikizira chinyezi, kukana kukhudzidwa, zida zoteteza pamwamba pazida za semiconductor, zosindikiza zosindikiza, ndi zomatira zotanuka.

Awiri chigawo kutentha silikoni vulcanized mphira (RTV-2 mphira mwachidule) si yabwino monga RTV-1 mphira, koma ali zosiyanasiyana mawerengedwe chigawo chimodzi.Zopangidwa ndi vulcanized zokhala ndi mawonekedwe angapo komanso mawonekedwe zitha kupezeka ndi mtundu umodzi.Chifukwa chake, amagwiritsidwa ntchito kwambiri ngati zida zotchinjiriza, kutsekereza, kuyika, kusindikiza, kutsimikizira chinyezi, kutsimikizira kugwedezeka, komanso kupanga zodzigudubuza m'mafakitale monga zida zamagetsi, magalimoto, makina, zomangamanga, nsalu, mankhwala, ndi mafakitale opepuka., Kusindikiza etc. Komanso, chifukwa RTV-2 ali kwambiri releasability nkhungu, chimagwiritsidwa ntchito ngati zinthu zofewa nkhungu kubwereza ndi kupanga katundu chikhalidwe, manja, zidole, zipangizo zamagetsi, ndi mbali makina.

Chimodzi mwazinthu zomwe zimagwiritsidwa ntchito ndi ma silicone sealants ndi makoma a magalasi.Magalasi ndi mafelemu a aluminiyamu aloyi amamatiridwa ndi zomatira zomata za silicon ngati zinthu zamakhoma akunja, zolumikizira zama telescopic sizikhala ndi madzi ndipo zimasindikizidwa ndi zomatira za silicon weathering.Ntchito zina zimaphatikizapo zitseko ndi mazenera a aluminiyamu, zitseko zazitsulo zapulasitiki ndi kusindikiza mawindo ozungulira, kuyika magalasi ndi kusuntha ma groove joints, rivet ndi fixing screw sealing: ware sanitary ndi countertops, zisindikizo zopanda madzi pakati pa makoma, khitchini, mipando ya bafa, nyumba zam'madzi, kudenga, zitsulo. madenga, zowonetsera, zowerengera, mapanelo a khoma, mbale zachitsulo zamitundu.Amagwiritsidwa ntchito ngati zosindikizira zosalowa madzi pakati pa mbale zapamsewu.

Kuphatikiza pa zosindikizira zomangira, RTV imaphatikizanso zida zosindikizira zomwe zimagwiritsidwa ntchito m'mafakitale monga zakuthambo, malo opangira magetsi a nyukiliya, zida zamagetsi, makina, ndi magalimoto, zida zomangira za silicone zomwe zimagwiritsidwa ntchito popanga zida zamagetsi, ndi nkhungu zofewa.Zimaphatikizapo zomatira za silicone mold zomwe zimagwiritsidwa ntchito... Kufuna kwa mitundu iyi ndikochepa, koma nthawi zambiri kumakhala kofunikira.

Gelisi ya silika ya inorganic (silica gel)

Inorganic silika gel osakaniza ndi kwambiri yogwira adsorbent, nthawi zambiri amakonzedwa pochita sodium silicate ndi sulfuric acid ndi kukumana angapo pambuyo mankhwala monga kukalamba ndi asidi thovu.Gelisi ya silika ndi chinthu cha amorphous ndipo mankhwala ake ndi mSiO2.nH2O.Sasungunuke m'madzi ndi zosungunulira, zopanda poizoni, zopanda pake, zokhazikika pamankhwala, ndipo samachita ndi zinthu zina kupatula ma alkali amphamvu ndi hydrofluoric acid.Mitundu yosiyanasiyana ya gelisi ya silika imapangidwa mosiyanasiyana ndikupanga ma microporous osiyanasiyana.

Kapangidwe kakemidwe ndi physics ya silika gel imatsimikizira kuti ili ndi zinthu zambiri zomwe zimakhala zovuta kuzisintha ndi zida zina zofananira: magwiridwe antchito apamwamba, kukhazikika kwamafuta abwino, chemistry yokhazikika, ndi chemistry yokhazikika.Mkulu wamakina mphamvu.Chifukwa cha mankhwala ake, amagwiritsidwa ntchito popanga mitundu yosiyanasiyana ya zinthu za silikoni monga zisindikizo za silikoni, zisindikizo za silikoni ndi ziwiya za kukhitchini za silikoni.

Gelisi ya silika imagawidwa mu macroporous silica gel, gel pore silica gel, mtundu wa B silika gel, ndi gel osakaniza pore pore malinga ndi kukula kwa pore.Chifukwa cha kusiyana kwa pore, mawonekedwe a adsorption ali ndi mawonekedwe apadera.Gelisi ya silika ya coarse-pore imakhala ndi mphamvu yowongoka kwambiri ikakhala chinyezi chambiri, ndipo gelisi ya pore silica imakhala ndi mphamvu yokulirapo kuposa gelisi ya coarse-pore silika pomwe chinyezi chikakhala chochepa.Gelisi ya silika ya mtundu wa B ili pakati pa pores ndi ma pores abwino, ndipo kuchuluka kwa ma adsorption kulinso pakati pa ma pores owoneka bwino ndi abwino.Macroporous silika gel osakaniza amagwiritsidwa ntchito ngati chotengera chonyamulira, matting agent, mankhwala otsukira mano ndi abrasive.

Magulu azogulitsa, mawonekedwe ogwiritsira ntchito, ndi kusamala kwa gel osakaniza silika, zopangira mphira za silicone, ndi zida zamadzimadzi za silicone mphira ndizosiyana.Ukadaulo wogwiritsa ntchito komanso kugwiritsa ntchito kwakukulu kwa silika gel zopangira ndi rabara yamadzimadzi ya silicone ndizosiyana.Zida zopangira ndizodziwika ndipo mutha kupeza, kufufuza ndi kufufuza zambiri.Phunzirani za silika gel.

Utoto wa silicon umagwiritsidwa ntchito makamaka ngati utoto wotsekereza (kuphatikiza vanishi, enamel, utoto wamitundu, vanishi, ndi zina), wophatikizidwa ndi ma motors amtundu wa H-class ndi ma coil osinthira, ndikuyika ndi nsalu zamagalasi, silika wagalasi, ndi nsalu yaasibesitosi.Timapanga zophimba zamagalimoto ndi zinthu zamagetsi.Chonde dikirani makhoma otsekedwa.

Utomoni wa silicone ndi zokutira zoteteza kutentha ndi nyengo, zokutira zoteteza zitsulo, zotchingira madzi ndi chinyezi pama projekiti omanga, zotulutsa, zomatira, ndi kukonza kwachiwiri ku mapulasitiki a silicone kuti agwiritsidwe ntchito pamagetsi, magetsi ndi chitetezo.Itha kugwiritsidwa ntchito ngati.makampani.Zida zonyamula za semiconductor ndi zida zotetezera monga zida zamagetsi.

Utomoni wa silicone ndi zokutira zoteteza kutentha ndi kupanikizika, zokutira zoteteza zitsulo, zotchingira madzi komanso zoteteza chinyezi pantchito yomanga, zotulutsa nkhungu, zomatira, zamagetsi, zamagetsi, zamagetsi, ndi mafakitale achitetezo.

Poyerekeza ndi zida zina za silikoni, utomoni wa silikoni uli ndi mitundu yaying'ono komanso yocheperako pamsika.

Pamene utomoni woyera wa silicone kapena utomoni wosinthidwa wa silikoni umagwiritsidwa ntchito ngati maziko, utoto wa siliva wokhala ndi aluminiyamu ufa ukhoza kugwiritsidwa ntchito pa kutentha kwa 400-450 ° C komanso ngakhale 600 ° C. ndi kutalika kwa mawonekedwe a solar sipekitiramu ndi 300 nm kapena kupitilira apo, koma utomoni wa silikoni umatenga zosakwana 280 nm.

Hydrolysis ya utomoni wa silikoni nthawi zambiri imakhala ndi ma monomer awiri kapena kuposerapo okhala ndi mitengo yosiyana ya hydrolysis ndipo nthawi zambiri imagwiritsidwa ntchito kuwongolera kusiyana kwa mitengo ya hydrolysis yamitundu yosiyanasiyana ya silane ndikukwaniritsa mikhalidwe yofananira ya co-hydrolysis., Hydrolysis ndi kuwonongeka kwa mowa kumachitika nthawi imodzi.