Elastomer 5 z'ingenzi zo gukoresha Gasket na Seal
Elastomeri ni iki? Iri jambo rikomoka kuri "elastic" - imwe mu miterere y'ibanze ya rubber. Amagambo "rubber" na "elastomeri" akoreshwa mu buryo bumwe mu kuvuga polymers zifite viscoelasticity - zikunze kwitwa "elasticity". Imiterere y'ibanze ya elastomeri irimo koroherana, uburebure bwinshi no guhuza ubushobozi bwo kwihanganira no kugabanya ubushyuhe (damping ni imiterere ya rubber ituma ihindura ingufu za mekanike mu bushyuhe iyo ihuye n'ihindagurika). Iyi miterere yihariye ituma elastomeri iba ibikoresho byiza byo gukoresha gaskets, seal, isolate ors, n'ibindi nk'ibyo.
Mu myaka yashize, umusaruro wa elastomer wagiye uva kuri kabutura karemano ikomoka kuri latex y'ibiti ujya kuri ubwoko bwa kabutura bukozwe neza cyane. Mu gukora ubwo bwoko, imiterere yihariye igerwaho hifashishijwe inyongeramusaruro nk'ibyuzuza cyangwa pulasitiki cyangwa hakoreshejwe uburyo butandukanye bw'ibikubiye muri copolymer. Iterambere ry'umusaruro wa elastomer rituma habaho uburyo bwinshi bwa elastomer bushobora guhindurwa, gukorwa no kuboneka ku isoko.
Kugira ngo umuntu ahitemo ibikoresho bikwiye, agomba kubanza gusuzuma ibipimo ngenderwaho bihuriweho mu mikorere ya elastomer mu mikoreshereze ya gasket na seal. Mu gihe ahitamo ibikoresho bikora neza, injeniyeri akenshi agomba kuzirikana ibintu byinshi. Imiterere ya serivisi nko ku bushyuhe bw'imikorere, imiterere y'ibidukikije, gukoranaho kwa shimi, n'ibisabwa na mekanike cyangwa fiziki byose bigomba gusuzumwa neza. Bitewe n'ikoreshwa, iyi miterere ya serivisi ishobora kugira ingaruka zikomeye ku mikorere n'igihe cy'ubuzima bwa gasket cyangwa seal ya elastomer.
Dufite ibi bitekerezo mu mutwe, reka turebere hamwe elastomer eshanu zikoreshwa cyane mu gukoresha gasket na seal.
1)Buna-N/Nitrile/NBR
Amagambo yose asa n’aya, iyi copolymer y’urubura rwa sintetike ya acrylonitrile (ACN) na butadiene, cyangwa Nitrile butadiene rubber (NBR), ni amahitamo akunzwe cyane akunze kuvugwa iyo hari lisansi, amavuta cyangwa amavuta.
Imitungo y'ingenzi:
Ingano y'ubushyuhe ntarengwa iri hagati ya ~ -54°C na 121°C (-65° – 250°F).
Irwanya cyane amavuta, ibinyabutabire n'ibicanwa.
Ubudahangarwa bwiza bwo gushwanyagurika, ubukonje butemba, kandi burwanya amarira.
Bikunda gukoreshwa hamwe na azote cyangwa heliyumu.
Ubudahangarwa buke ku mirasire ya UV, ozone, no kugabanuka kw'ikirere.
Ubudahangarwa buke bwa ketone na hydrocarboni za chlorine.
Ikunze gukoreshwa muri:
Porogaramu zo gucunga lisansi mu by'indege n'imodoka
Ikiguzi kigereranijwe:
Hasi kugeza Hagati
2) EPDM
Imiterere ya EPDM itangirira kuri copolymerization ya ethylene na propylene. Monomeri ya gatatu, diene, yongerwaho kugira ngo ibikoresho bibashe kuvunganywa na sulfur. Imvange yavuyemo izwi nka ethylene propylene diene monomer (EPDM).
Imitungo y'ingenzi:
Ingano y'ubushyuhe ntarengwa iri hagati ya ~ -59°C na 149°C (-75° – 300°F).
Ubudahangarwa bwiza cyane n'ubushyuhe, ozone n'ikirere.
Ubudahangarwa bwiza ku bintu byo mu kirere n'umwuka ushyushye.
Imiterere myiza cyane yo gukingira amashanyarazi.
Ubudahangarwa bwiza ku misemburo ya ketone, aside isanzwe yakuwemo, na alkaline.
Ubudahangarwa buke ku mavuta, lisansi na peteroli.
Ubudahangarwa buke kuri hydrocarboni za alifatiki, solvents za halogenated, na aside nyinshi.
Ikunze gukoreshwa muri:
Ibidukikije biri muri firigo/ahantu hakonje
Porogaramu zo gukonjesha imodoka n'uburyo bwo gukuraho ikirere
Ikiguzi kigereranijwe:
Hasi - Hagati
3) Neoprene
Umuryango wa neoprene w’udupira tw’ubukorikori dukorwa binyuze mu gupolima kloroprene kandi uzwi kandi nka polychloroprene cyangwa Chloroprene (CR).
Imitungo y'ingenzi:
Ingano y'ubushyuhe ntarengwa iri hagati ya ~ -57°C na 138°C (-70° – 280°F).
Imiterere myiza cyane yo kwangirika, gushwanyagurika no kwihanganira inkongi z'umuriro.
Ingufu zirinda amarira no gukanda neza.
Ubudahangarwa bwiza bw'amazi.
Irwanya cyane imihindagurikire y’ikirere, imirasire y’izuba, n’ikirere gishyushye, ndetse n’amavuta, amavuta n’ibintu bishongesha umwuka.
Ubudahangarwa buke ku aside ikomeye, ibinyabutabire, esters, na ketone.
Ubudahangarwa buke ku bintu birimo chlorine, aromatike, na nitro-hydrocarbons.
Ikunze gukoreshwa muri:
Porogaramu zo Gukoresha Ibidukikije mu Mazi
ikoranabuhanga
Ikiguzi kigereranijwe:
Hasi
4) Silikoni
Rubber za silikoni ni vinyl methyl polysiloxanes ifite polymer nyinshi, yitwa (VMQ), ikora neza cyane mu bidukikije bishyuha cyane. Bitewe n'uko ari nziza, rubber za silikoni zikwiriye cyane gukoreshwa mu isuku.
Imitungo y'ingenzi:
Ingano y'ubushyuhe ntarengwa iri hagati ya ~ -100°C na 250°C (-148° – 482°F).
Ubudahangarwa bwiza cyane n'ubushyuhe bwinshi.
Ubudahangarwa bw'imirasire ya UV, ozone n'ikirere bidasanzwe.
Igaragaza ubushobozi bworoshye bwo koroshya ubushyuhe buri hasi bw'ibikoresho byavuzwe.
Imiterere myiza cyane ya dielectric.
Uburemere buke bwo gukurura no kudacika kw'amarira.
Ubudahangarwa buke ku bintu bishongesha, amavuta, na aside nyinshi.
Ubudahangarwa buke ku mwuka w'umwuka ushyushye.
Ikunze gukoreshwa muri:
Porogaramu zo gukoresha mu biribwa n'ibinyobwa
Imiti ikoreshwa mu kubungabunga ibidukikije (Uretse uburyo bwo koroshya ibidukikije hakoreshejwe umwuka ushyushye)
Ikiguzi kigereranijwe:
Iringaniye - Hejuru
5) Fluoroelastomer/Viton®
Viton® fluoroelastomer zishyirwa mu byiciro hakurikijwe izina rya FKM. Iri tsinda rya elastomer ni umuryango ugizwe na copolymers za hexafluoropropylene (HFP) na vinylidene fluoride (VDF cyangwa VF2).
Terpolymer za tetrafluoroethylene (TFE), vinylidene fluoride (VDF) na hexafluoropropylene (HFP) ndetse na perfluoromethylvinylether (PMVE) ziboneka mu byiciro bya mbere.
FKM izwi nk'igisubizo cy'amahitamo iyo hakenewe ubushyuhe bwinshi ndetse no kurwanya imiti.
Imitungo y'ingenzi:
Ingano y'ubushyuhe ntarengwa iri hagati ya ~ -30°C na 315°C (-20° – 600°F).
Ubudahangarwa bwiza cyane ku bushyuhe buri hejuru.
Ubudahangarwa bw'imirasire ya UV, ozone n'ikirere bidasanzwe.
Ubudahangarwa buke bwa ketones, esters nke z'uburemere bwa molekile.
Ubudahangarwa buke ku bintu birimo alcool n'ibinyabutabire birimo nitro
Ubudahangarwa buke ku bushyuhe buri hasi.
Ikunze gukoreshwa muri:
Porogaramu zo Gufunga mu mazi/Gukoresha SCUBA
Ikoreshwa rya lisansi y'imodoka ifite ubwinshi bwa biodiesel
Porogaramu zo Gufunga Ibikoresho by'Indege mu Gushyigikira Sisitemu za lisansi, Amavuta, na Hydraulic
Ikiguzi kigereranijwe:
Hejuru
Igihe cyo kohereza ubutumwa: 15 Mata-2020