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Musiyano pakati pesilicone uye silicone rubber

Silicone rabha inoshandiswa zvakanyanya, asi vamwe vanhu vangatadza kusiyanisa pakati pesilicone rabha uye silica gel, uye zita harina kusarudzwa.Nhasi, mupepeti achanyatso tarisisa misiyano uye kupatsanura pakati pesilicone uye silicone rubha.Parizvino, pfungwa yezwi rokuti "silicone" haina kumira.Kusvika parizvino, hapana zita rakanyatsotsanangurwa.Paunonzwa izwi rekuti "silica gel", unofanirwa kunzwisisa kuti iri silica gel kana silicone-ine synthetic rubber, kana kuti inorganic silica gel kana organic silica gel mukuongorora kwekupedzisira.

"Silica gel" inotaurwa nezvayo nemashoko akati wandei ane hukama akadai sesilicone rabha, silicone rabha, uye silicone.Hukama huri pakati pesilicone rubber ne silica gel hwakasiyana nesilicone rubber uye inosanganisira silicone rabha.Silicone rabha ndeye organic "silica gel" ye "silica gel"."Silicone" izwi rinoshandiswa kuHong Kong neTaiwan.Inonzi "silicone" munyika yeChina.Silicone uye Silicone dudziro yeChirungu silicone.Zvinowanzotaurwa kuti zvinorevawo "silicone".

Muchidimbu, silica gel inogona kukamurwa kuita mapoka maviri, organic silica gel uye inorganic silica gel, zvinoenderana nehunhu hwavo uye kuumbwa.Kutanga, ini ndichatsanangura nezve silicone rubber.

1. Silicone rubber performance uye technical parameters

Silicone rabha ndiyo yakakura uye inonyanya kushandiswa chikamu chezvigadzirwa zvesilicone.Mushure me vulcanization, silicone rabha ine yakanakisa kupisa kupisa, kushoma tembiricha kuramba, kuramba mamiriro ekunze, kudzoreredza mvura, kuvharwa kwemagetsi, uye physiological inertia.

Zvinhu Zvinokosha uye Zvishandiso zveSilicone Rubber Zvigadzirwa: Zvichienderana nekupisa kwavo kwevulcanization, silicone rubber inogona kugoverwa mumapoka maviri: kupisa kwepamusoro (kupisa) vulcanization uye kupisa kwekamuri vulcanization.Yakakwira tembiricha rabha inonyanya kushandiswa mukugadzira zvakasiyana-siyana silicone rabha zvigadzirwa, nepo tembiricha yekamuri rabha inonyanya kushandiswa seanonamira, zvinhu zvehari uye mold.

Kupisa vulcanized silicone rabha (HTV)

Heat vulcanized silicone rubber (HTV) ndiyo inonyanya kukosha yezvigadzirwa zvesilicone, uye methyl vinyl silicone rabha (VMQ) ndiyo inonyanya kukosha chikamu cheHTV chinowanzozivikanwa seyakanyanya tembiricha rabha.Methyl vinyl silicone rubber (raw rabha) haina ruvara, haina kunhuhwirira, haina chepfu uye haina tsvina yemuchina.Raw rabha inosanganiswa nekusimbisa kwakakodzera, zvimiro zvekutonga, vulcanizers uye zvimwe zvinowedzera sezvinodiwa.Kucheneswa, kudziyisa, kudzvanya kana extrusion, inoteverwa nenhanho mbiri vulcanization mumhando dzakasiyana dzezvigadzirwa.Zvigadzirwa zvaro zvine yakanakisa kuvharirwa kwemagetsi, kuramba kwakasimba kune arcs, coronas, uye sparks, kusapinda kwemvura, hunyoro humbowo, kukanganisa kupikisa, kukanganisa kupikisa, physiological inertia, kufema uye zvimwe zvinhu.Inonyanya kushandiswa mundege, zviridzwa, zvemagetsi nemidziyo, kufamba, simbi, michina, mota, zvekurapa uye hutano, uye mamwe masekete, uye inogona kushandiswa kugadzira zvindori zvechisimbiso, gaskets, machubhu, uye tambo dzemhando dzakasiyana.Nhengo dzemunhu, tsinga dzeropa, kufema membranes uye rubber molds, mold kuburitsa maajenti ekukanda chaiko, nezvimwe.

Tembiricha yekamuri yakasvibiswa silicone rabha (RTV)

RTV silicone rabha kazhinji ine mapoka maviri: yakapfupikiswa mhando uye yekuwedzera mhando."Iyo yekuwedzera-yemhando yekunamatira tembiricha yekamuri yakavakirwa pamutsara wepolysiloxane ine boka revinyl, inoshandisa siloxane ine hydrogen-ine siloxane semuchinjiko wekubatanidza mumiririri, uye inobata-inobatanidza kuita mukupisa kwekamuri kusvika pakati tembiricha pamberi pe catalyst kuita elastomer.Iyo ine yakanakisa kudzoreredza mvura uye kuvharirwa kwemagetsi, uye panguva imwecheteyo, ine yakanakisa yemuviri uye yemagetsi zvimiro senge simba rekusimba, kurebesa kwehukama, uye kubvarura simba nekuda kwekuunzwa kweanoshanda terminal mapoka.Radiation sulphurization uye peroxide kuwedzera.Inokodzera nzira dzakasiyana-siyana dzesulfurization dzakadai sesulfurization uye kuwedzera kuumba sulfurization, uye inoshandiswa zvakanyanya pakupisa kupisa, kupikisa unyoro, kuvharwa kwemagetsi, uye yakakwirira-yakasimba silicone rubber zvigadzirwa.

Condensation-mhando yekamuri-tembiricha vulcanized silicone rabha inoratidzwa ne condensation reaction pakati pesilicone hydroxyl nezvimwe zvinhu zvinoshanda, uye inoyambuka-yakabatana pakamuri tembiricha kugadzira elastomer.Zvigadzirwa zvakakamurwa kuita chimwe-chikamu kurongedza uye maviri-chikamu kurongedza.chimiro.One-component vulcanized silicone rubber (RTV-1 rubber kwenguva pfupi) ndechimwe chezvigadzirwa zvikuru zve condensed silicone rabha.Iyo inowanzo gadzirwa kubva pabase polymers, crosslinkers, catalysts, mafirita uye ekuwedzera.Chigadzirwa chacho chakanakira nekuti chakarongedzwa mupombi yakavharwa, yakasvinwa kunze panguva yekushandiswa, yakafumurwa kumhepo uye yobva yaiswa mu elastomer.Iyo vulcanized chigadzirwa inogona kushandiswa kwenguva yakareba mukupisa kwe (-60 kusvika + 200 ° C), ine yakanakisa magetsi ekudzivirira uye kugadzikana kwekemikari, ine mvura yakanakisa, ozone, uye kusagadzikana kwemamiriro ekunze, uye ine yakanakisa kunamatira kune. simbi dzakasiyana-siyana.kuwedzera.Uye zvinhu zvisiri zvesimbi.Accessibility.Inonyanya kushandiswa kupfekedza zvikamu zvakasiyana zvemagetsi nemidziyo yemagetsi, uye inobata basa sekuvhara, hunyoro humbowo, kupikisa kwemaitiro, zvinhu zvekudzivirira pamusoro pemidziyo yesemiconductor, yekuisa chisimbiso, uye elastic adhesive.

Zviviri-zvikamu zvekamuri tembiricha vulcanized silicone rabha (RTV-2 rabha kwenguva pfupi) haina nyore seRTV-1 rabha, asi ine zvakasiyana-siyana zvechikamu reshiyo.Zvigadzirwa zveVulcanized zvine akawanda maratidziro uye hunhu zvinogona kuwanikwa nemhando imwe.Nokudaro, inoshandiswa zvakanyanya sechinhu chekuisa, kuvhara, kuvhara, kuisa chisimbiso, kuratidza hunyoro, vibration proofing, uye kugadzira roller mumaindasitiri akadai semidziyo yemagetsi, motokari, michina, kuvaka, machira, makemikari, uye chiedza indasitiri., Kudhinda etc. Pamusoro pezvo, nekuti RTV-2 ine yakanakisa mold releasability, inoshandiswa zvakanyanya sechinhu chakapfava cheforoma yekudzokorora uye kugadzira tsika dzetsika, zvigadzirwa zvemaoko, matoyi, zvigadzirwa zvemagetsi, uye zvikamu zvemuchina.

Imwe yeakajairika kushandiswa kwesilicone sealants igirazi keteni madziro.Girazi uye aluminium alloy mafuremu akanamirwa neorganic silicon yekumisikidza adhesive sechinhu chekunze kwemadziro, majoini etelescopic haana mvura uye akavharwa neorganic silicon weathering adhesive.Zvimwe zvinoshandiswa zvinosanganisira magonhi ealuminium alloy nemahwindo, magonhi esimbi epurasitiki uye kuvharwa kwehwindo, kusungirirwa kwegirazi uye kufambisa majoini, rivet uye kugadzirisa screw sealing: sanitary ware uye countertops, Zvisimbiso zvisingapindi mvura pakati pemadziro, kicheni, fenicha yekugezera, aquariums, sirin'i, simbi. matenga, mashoo, makaunda, mapaneru emadziro, marata esimbi ane mavara.Inoshandiswa kuvharisa zvisimbiso zvisina mvura pakati pemaplate emumugwagwa.

Pamusoro pezvisimbiso zvekuvaka, RTV inosanganisira yekuisa chisimbiso inoshandiswa mumaindasitiri akadai seaerospace, zvidyarwa zvemagetsi enyukireya, midziyo yemagetsi, michina, uye mota, silicone potting zvinhu zvinoshandiswa kuumba zvinhu zvemagetsi, uye zvinyoro zvinyoro.Inosanganisira silicone mold adhesives inoshandiswa... Kudiwa kwemhando idzi kwakaderera, asi muzviitiko zvakawanda zvakakosha.

Inorganic silica gel (silica gel)

Inorganic silica gel inonyanya kushanda adsorbent, inowanzo gadzirirwa nekuita sodium silicate ne sulfuric acid uye inotevedzana yemashure ekurapa maitiro sekuchembera uye asidi kupupa.Silica gel chinhu chine amorphous uye chimiro chayo chemakemikari ndeye mSiO2.nH2O.Haina kunyungudika mumvura uye zvinonyungudutsa, isiri-chepfu, isinganakidze, yakagadzikana yekemikari, uye haisanganisi nezvimwe zvinhu kunze kweakasimba alkalis uye hydrofluoric acid.Mhando dzakasiyana dzesilica gel dzinogadzirwa zvakasiyana uye dzinogadzira akasiyana microporous zvimiro.

Iyo kemikari yakagadzirwa uye fizikisi yesilica gel inoona kuti ine zvinhu zvakawanda zvinonetsa kutsiva nezvimwe zvakafanana zvinhu: yakakwirira adsorption performance, yakanakisa thermal kugadzikana, yakagadzikana chemistry, uye yakagadzikana chemistry.High mechanical simba.Nekuda kwemakemikari ayo, inoshandiswa mukugadzirwa kwemhando dzakasiyana-siyana dzesilicone zvigadzirwa sesilicone seals, silicone seals uye silicone kicheni midziyo.

Silica gel yakakamurwa kuita macroporous silica gel, kosi pore silica gel, mhando B silica gel, uye yakanaka pore silica gel zvinoenderana nehukuru hwepore dhayamita.Nekuda kwekusiyana kwechimiro chepore, iwo adsorption maitiro ane akasiyana hunhu.Coarse-pore silica gel ine yakakwirira adsorption kugona kana hunyoro hwehukama hwakakwira, uye pore silica gel ine yakakura adsorption kugona kupfuura coarse-pore silica gel kana hunyoro hwehukama hwakaderera.Type B silica gel iri pakati peakakasharara uye akatsetseka pores, uye huwandu hweadsorption huri pakati peakakora uye mapores akanaka.Macroporous silica gel inowanzoshandiswa se catalyst carrier, matting agent, mazino uye abrasive.

Zvikamu zvechigadzirwa, maitiro ekushandisa, uye matanho ekuchengetedza silica gel, silicone rabha raw materials, uye liquid silicone raw materials zvakasiyana.Iyo tekinoroji yekushandisa uye mashandisirwo makuru esilica gel raw material uye liquid silicone rabha zvakasiyana.Raw zvinhu zvinozivikanwa uye iwe unogona kuwana, kuongorora uye kuongorora zvimwe.Dzidza nezve silica gel.

Silicon resin inonyanya kushandiswa sependi inodzivirira (kusanganisira varnish, enamel, pendi yeruvara, varnish, nezvimwewo), yakamisikidzwa neH-class motors uye transformer coils, uye yakamisikidzwa negirazi jira, girazi jira sirika, uye asbestos jira.Isu tinogadzira mavhavha emota uye zvigadzirwa zvemagetsi.Ndapota mirira iyo insulated winding.

Silicone resins kupisa uye mamiriro ekunze anodzivirira anticorrosion coatings, simbi inodzivirira, isingapinde mvura uye hunyoro humboo hwemapurojekiti ekuvaka, maajenti ekuburitsa, zvinonamira, uye yechipiri kugadzirisa kune silicone mapurasitiki kuti ashandiswe mumagetsi, magetsi uye kudzivirira.Inogona kushandiswa se.industry.Semiconductor kurongedza zvinhu uye insulating zvinhu senge zvemagetsi zvikamu.

Silicone resins kupisa uye kudzvanywa kunodzivirira anticorrosion coatings, simbi inodzivirira, isingapinde mvura uye hunyoro humbowo hwekuputira mapurojekiti ekuvaka, mold kuburitsa ejenti, anonamira, uye zvemagetsi, zvigadzirwa zvemagetsi, uye maindasitiri ekudzivirira.

Kuenzaniswa nezvimwe zvigadzirwa zvesilicone, silicone resins ine diki diki uye diki musika mugove.

Kana iyo yakachena silicone resin kana yakagadziridzwa silicone resin inoshandiswa sechinhu chigadziko, pendi yesirivha ine aluminium poda inogona kushandiswa pakupisa kwe400-450 ° C uye kunyange 600 ° C. Inofananidzwa neyakajairwa organic resin, silicone resins ine nani kupikisa mamiriro ekunze, uye wavelength kureba kwesolar spectrum ndeye 300 nm kana kupfuura, asi silicone resins inotora isingasviki 280 nm.

Hydrolysis yesilicone resins inowanzove ine maviri kana anopfuura monomers ane akasiyana hydrolysis mazinga uye anowanzo shandiswa kugadzirisa mutsauko we hydrolysis mazinga emasilane akasiyana uye kuwana yunifomu co-hydrolysis mamiriro., Hydrolysis uye kuora kwedoro kunoitwa panguva imwe chete.

 


Nguva yekutumira: Oct-29-2021