Ibyuma bya polyurethane bya rubber, byakozwe mu bikoresho bya polyurethane, ni ingenzi mu bikorwa bitandukanye by’inganda. Izi seal ziza mu buryo butandukanye, harimo O-rings, V-rings, U-rings, Y-rings, seal z’urukiramende, seal zifite ishusho yihariye, n’ibikoresho byo gufunga.
Rubber ya polyurethane, polimeri ikoze mu buryo bw'ubukorano, ihuza icyuho kiri hagati ya rubber karemano na pulasitiki isanzwe. Ikoreshwa cyane cyane mu gutunganya igitutu cy'icyuma, rubber ya polyurethane ivugwa ahanini ni iyo mu bwoko bwa polyester casting. Ikorwa muri aside adipic na ethylene glycol, bigatuma habaho polimeri ifite uburemere bwa molekile bugera kuri 2000. Iyi polimeri yongera gukora prepolymer ifite amatsinda y'impera ya isocyanate. Hanyuma prepolymer ivangwa na MOCA (4,4′-methylenebis (2-chloroaniline)) hanyuma igashyirwa mu bimera, hanyuma hagakurikiraho vulcanization ya kabiri kugira ngo hakorwe ibicuruzwa bya polyurethane bifite ubukana butandukanye.
Ubukana bw'udupfundikizo twa polyurethane rubber bushobora guhindurwa kugira ngo buhuze n'ibisabwa mu gutunganya icyuma, kuva kuri 20A kugeza 90A ku gipimo cy'ubukana bwa Shore.
Ibiranga Imikorere y'ingenzi:
- Ubudahangarwa Budasanzwe: Rubber ya polyurethane igaragaza ubudahangarwa bwinshi mu bwoko bwose bwa rubber. Ibizamini bya laboratwari bigaragaza ko ubudahangarwa bwayo buruta inshuro 3 kugeza kuri 5 ugereranije n’ubw’iy’umwimerere, aho ikoreshwa mu buzima busanzwe rikunze kugaragara inshuro zigera ku 10 z’ubudahangarwa.
- Ingufu nyinshi n'ubukonje: Mu bwoko bw'ubukonje kuva ku nkombe A60 kugeza kuri A70, irangi rya polyurethane rigaragaza imbaraga nyinshi n'ubukonje buhebuje.
- Gufata neza no gushyuha: Mu bushyuhe bw'icyumba, ibice bya polyurethane bishobora gufata 10% kugeza kuri 20% by'ingufu zo guhindagura, hamwe n'umuvuduko wo kwinjiza mwinshi ku buryo bwo kwiyongera kw'ingufu zo guhindagura.
- Ubudahangarwa bwiza bw'amavuta n'imiti: Rubber ya polyurethane igaragaza ko ikunda cyane amavuta y'ubutare atari ay'ubutare kandi ntabwo ifatwa n'ibicanwa (nk'amavuta ya peteroli na lisansi) n'amavuta ya mekanike (nk'amavuta ya hydraulic na grease), irusha rubber rusange kandi irusha rubber ya nitrile. Ariko, igaragaza ububyimbirwe bukabije bwa alcohol, esters, na hydrocarbons zinuka cyane.
- Korejimeteri yo kugongana cyane: Ubusanzwe iri hejuru ya 0.5.
- Izindi ngeso: Ubudahangarwa bwiza mu bushyuhe buke, ubudahangarwa bwa ozone, ubudahangarwa bw'imirasire, ubushyuhe bw'amashanyarazi, n'ubushobozi bwo gufatana.
Porogaramu:
Bitewe n'ubushobozi bwayo bwiza bwo gukora no gukora, polyurethane rubber ikunze gukoreshwa mu bikorwa bifite imikorere myiza, harimo ibikoresho bidashira, ibintu bikomeye birwanya amavuta, hamwe n'ibice bikomeye kandi bifite modulus nyinshi. Ikoreshwa cyane mu nganda zitandukanye:
- Imashini n'imodoka: Gukora ibikoresho bigabanya feri cyane, ibice bya rubber birwanya vibration, amasoko ya rubber, imigozi, n'ibikoresho by'imashini zikora imyenda.
- Ibikoresho birwanya amavuta: Gukora imigozi yo gucapa, imigozi, amacupa ya lisansi, n'imigozi ya peteroli.
- Imiterere ikomeye yo gukururana: Ikoreshwa mu miyoboro itwara imizigo, mu dupira tw'ibikoresho byo gusya, mu madirishya, mu byuma biyungurura ibyuma, mu nkweto, mu mapine y'inkweto, mu mapine y'imodoka zitwara imizigo, mu mapine y'imodoka, mu mapine y'amagare.
- Gukanda no Kugonda mu Bukonje: Bikoreshwa nk'ibikoresho bishya byo gukanda no kugonda mu bukonje, bisimbura ibyuma bifata igihe kinini kandi bihenze.
- Rubber y'ifuro: Mu gukoresha uburyo amatsinda ya isocyanate akoresha amazi kugira ngo arekure CO2, rubber yoroheje y'ifuro ifite imiterere myiza ya mekanike ishobora gukorwa, ikaba nziza mu gukingira, gukingira ubushyuhe, gukumira amajwi, no kurwanya gutigita.
- Uburyo bwo Kwa muganga: Bukoreshwa mu bice by'ingenzi bya kabutura, imiyoboro y'amaraso y'ubukorano, uruhu rw'ubukorano, imiyoboro y'amazi, ibikoresho byo gusana amenyo, n'ibikoresho byo kuyakoresha mu menyo.
Igihe cyo kohereza: 17 Nzeri 2025