Elastomers 5 Dzepamusoro dzeGasket & Seal Applications
Chii chinonzi elastomers? Izwi iri rinobva pashoko rekuti "elastic" - chimwe chezvinhu zvikuru zverabha. Mazwi ekuti "rabha" uye "elastomer" anoshandiswa zvakafanana kureva mapolymer ane viscoelasticity - anowanzozivikanwa se "elasticity." Hunhu hwe elastomers hunosanganisira kuchinjika, kureba kwakanyanya uye musanganiswa wekutsungirira uye damping (damping imhando yerabha inoita kuti ishandure simba remuchina kuita kupisa kana yakanganiswa). Iyi seti yakasiyana yehunhu inoita kuti elastomers ive chinhu chakanakira magasket, zvisimbiso, isolat ors, nezvimwewo.
Mumakore apfuura, kugadzirwa kwe elastomer kwave kuchichinja kubva pa rabha yechisikigo inogadzirwa kubva ku latex yemuti kuenda kumhando yepamusoro ye rabha inosanganiswa. Mukugadzira kusiyana uku, hunhu hwakasiyana hunowanikwa nerubatsiro rwezvinhu zvinowedzera zvakaita se fillers kana plasticizers kana nekusiyana kwehuwandu hwezvinhu mukati me copolymer structure. Kushanduka kwekugadzirwa kwe elastomer kunogadzira mikana yakawanda ye elastomer inogona kugadzirwa, kugadzirwa uye kuwanikwa mumusika.
Kuti munhu asarudze chinhu chakakodzera, anofanira kutanga aongorora zvinodiwa zvakafanana pakushanda kwe elastomer mu gasket uye seal applications. Pakusarudza chinhu chinoshanda, mainjiniya anowanzo funga nezvezvinhu zvakawanda. Mamiriro ebasa akadai sekupisa kwekushanda, mamiriro ezvakatipoteredza, kusangana kwemakemikari, uye zvinodiwa zvemakanika kana zvemuviri zvese zvinofanirwa kufungwa nezvazvo. Zvichienderana nekushandiswa, mamiriro aya ebasa anogona kukanganisa zvakanyanya mashandiro uye hupenyu hwe elastomer gasket kana seal.
Tichifunga nezvepfungwa idzi, ngationgororei ma elastomer mashanu anonyanya kushandiswa pakushandisa gasket nechisimbiso.
1)Buna-N/Nitrile/NBR
Mashoko ese akafanana, iyi synthetic rabber copolymer yeacrylonitrile (ACN) nebutadiene, kana kuti Nitrile butadiene rabber (NBR), isarudzo yakakurumbira inowanzo tsanangurwa kana paine peturu, mafuta uye/kana mafuta.
Zvivakwa Zvikuru:
Tembiricha yepamusoro inotangira pa ~ -54°C kusvika 121°C (-65° – 250°F).
Inodzivirira mafuta, zvinonyungudutsa uye mafuta zvakanaka kwazvo.
Kudzivirira kukweshwa zvakanaka, kuyerera kwechando, uye kunodzivirira kubvaruka.
Zvinonyanya kushandiswa neNitrogen kana Helium.
Kusakwanisa kubatwa neUV, ozone, uye mamiriro ekunze.
Kusakwanisa kurwisa ma ketones nema chlorine hydrocarbons.
Inoshandiswa zvakanyanya mu:
Zvishandiso zveKubata Mafuta muNdege neMotokari
Mutengo Wakaenzana:
Yakaderera kusvika Pakati Nepakati
2) EPDM
Kuumbwa kweEPDM kunotanga ne copolymerization ye ethylene ne propylene. Monomer yechitatu, diene, inowedzerwa kuitira kuti zvinhu zvigone kusanganiswa ne sarufa. Musanganiswa wakabuda unozivikanwa se ethylene propylene diene monomer (EPDM).
Zvivakwa Zvikuru:
Tembiricha yepamusoro inotangira pa ~ -59°C kusvika 149°C (-75° – 300°F).
Kudzivirira kupisa, ozone uye mamiriro ekunze zvakanyanya.
Kuramba kwakanaka kune zvinhu zve polar uye steam.
Hunhu hwakanaka hwekudzivirira magetsi.
Kuramba zvakanaka ma ketones, maasidhi akasanganiswa, uye ma alkalines.
Kusakwanisa kudziviswa nemafuta, peturu, uye parafini.
Kusakwanisa kudziviswa nemahydrocarbons e aliphatic, halogenated solvents, uye concentrated acids.
Inoshandiswa zvakanyanya mu:
Nzvimbo Dzine Mufiriji/Dzimba Dzinotonhora
Sisitimu Yekutonhodza Yemotokari uye Mashandisirwo Ekudzima Mamiriro Ekunze
Mutengo Wakaenzana:
Zvakaderera - Zviri Pakati Nepakati
3) Neoprene
Mhuri ye neoprene yemarubha ekugadzira inogadzirwa ne polymerization ye chloroprene uye inozivikanwawo se polychloroprene kana Chloroprene (CR).
Zvivakwa Zvikuru:
Tembiricha yepamusoro inotangira pa ~ -57°C kusvika 138°C (-70° – 280°F).
Hunhu hwakanaka kwazvo hwekukuvadzwa, kukweshwa uye hunodzivirira moto.
Kudzivirira kubvaruka zvakanaka uye kudzvanywa.
Kudzivirira mvura zvakanaka.
Inodzivirira zvakanaka kusvibiswa ne ozone, UV, uye mamiriro ekunze pamwe chete nemafuta, magirisi, uye zvinonyungudutsa zvinyoro nyoro.
Kusakwanisa kuramba zvakasimba maasidhi, zvinonyungudutsa, maester, uye maketone.
Kusakwanisa kumirisana nechlorinated, aromatic, uye nitro-hydrocarbons.
Inoshandiswa zvakanyanya mu:
Zvishandiso zveMamiriro Ekunze Emvura
Zvemagetsi
Mutengo Wakaenzana:
Zvakaderera
4) Silikoni
Marabha esilicone imhando yevinyl methyl polysiloxanes ine polymer yakawanda, inonzi (VMQ), iyo inoshanda zvakanaka munzvimbo dzine kupisa kwakanyanya. Nekuda kwekuchena kwayo, marabha esilicone anonyanya kukodzera kushandiswa muhutsanana.
Zvivakwa Zvikuru:
Tembiricha yepamusoro inotangira pa ~ -100°C kusvika 250°C (-148° – 482°F).
Kudzivirira kupisa kwakanyanya.
Kudzivirira kwakanyanya kweUV, ozone uye mamiriro ekunze.
Inoratidza kuchinjika kwakanakisa kwekupisa kwakaderera kwezvinhu zvakanyorwa.
Zvimiro zvakanaka kwazvo zve dielectric.
Simba rekusimba uye kusasimba kwekubvaruka.
Kusakwanisa kudziviswa zvakanyanya nezvinyungudutsa, mafuta, uye acid dzakasimba.
Kusakwanisa kudziviswa nehutsi.
Inoshandiswa zvakanyanya mu:
Zvishandiso zveChikafu & Chinwiwa
Kushandiswa kwemishonga munzvimbo inotonhorera (Kunze kwekuvhiyiwa nemhepo inopfuta)
Mutengo Wakaenzana:
Pakati nepakati - Yakakwirira
5) Fluoroelastomer/Viton®
Ma fluoroelastomer eViton® akarongwa pasi pezita rekuti FKM. Rudzi urwu rwe elastomers imhuri ine ma copolymers e hexafluoropropylene (HFP) uye vinylidene fluoride (VDF kana VF2).
Materpolymer e tetrafluoroethylene (TFE), vinylidene fluoride (VDF) uye hexafluoropropylene (HFP) pamwe chete ne perfluoromethylvinylether (PMVE) ane hunyanzvi anowanikwa mumagiredhi epamusoro.
FKM inozivikanwa semushonga unosarudzwa kana paine tembiricha yakakwira pamwe nemakemikari anoramba kushanda.
Zvivakwa Zvikuru:
Tembiricha yepamusoro inotangira pa ~ -30°C kusvika 315°C (-20° – 600°F).
Yakanakisisa kudzivirira kupisa kwakanyanya.
Kudzivirira kwakanyanya kweUV, ozone uye mamiriro ekunze.
Kusakwanisa kurwisa ma ketones, ma esters ane huremu hwakaderera.
Kusakwanisa kuramba doro nemakemikari ane nitro
Kusakwanisa kuramba tembiricha yakaderera.
Inoshandiswa zvakanyanya mu:
Maitiro Ekuvhara Mvura/SCUBA
Mashandisirwo emafuta emotokari ane huwandu hwakawanda hweBiodiesel
Mashandisirwo eChisimbiso cheNdege muKutsigira Mafuta, Mafuta, uye Masisitimu eHydraulic
Mutengo Wakaenzana:
Yakakwirira
Nguva yekutumira: Kubvumbi-15-2020