Polyurethane (PU), iyo izere zita re polyurethane, i polymer komboni, iyo yakagadzirwa muna 1937 naOtto Bayer nevamwe. Polyurethane ine mapoka maviri makuru: polyester uye polyether. Inogona kugadzirwa kuita polyurethane mapurasitiki (kunyanya furo), polyurethane fibers (inozivikanwa se spandex kuChina), polyurethane rubber uye elastomers. Polyurethane chinhu chepolymer chakanakira kushandiswa sevhavha yevhiri mukugadzira maindasitiri macasters.
Mabhenefiti makuru e polyurethane casters anonyanya seanotevera:
Kutanga, kushanda kweyero inogadziriswa
Nhamba yezviratidziro zvemuviri uye zvemakina zvinogona kugadziridzwa kuburikidza nekusarudzwa kwezvinhu zvakabikwa uye mafomula, mukati mehumwe huwandu hwekuchinja kunoshanduka, kuitira kuti isangane nezvinodiwa nemushandisi zvakasiyana pakuita kwechigadzirwa.
Chechipiri, yepamusoro abrasion resistance
Pamberi pemvura, oiri uye kumwe kunyorova midhiya yekushanda mamiriro ekushanda, polyurethane casters kupfeka kuramba kunowanzoitika kakawanda kusvika kumakumi emazana ezvakajairwa rabha zvinhu. Metal zvinhu zvakadai sesimbi uye zvimwe zvakaoma, asi kwete hazvo kupfeka-kusagadzikana!
Chechitatu, nzira dzekugadzirisa, kushandiswa kwakakura
Polyurethane elastomers inogona kuumbwa neyakajairwa-chinangwa rabha nepurasitiki, kusanganisa uye vulcanizing (MPU); ivo vanogona zvakare kugadzirwa kuita rabha remvura, kudira nekuumba kana kupfapfaidza, kuisa chisimbiso uye centrifugal molding (CPU); anogona zvakare kugadzirwa kuita granular zvinhu uye akajairwa mapurasitiki nejekiseni, extrusion, calendering, blow molding uye mamwe maitiro (CPU). Yakaumbwa kana jekiseni yakaumbwa zvikamu, mukati mehumwe hurema renji, inogona zvakare kutemwa, kukuya, kudhirowa uye kumwe kugadziridzwa kwemuchina.
Chechina, kuramba mafuta, ozone kuramba, kuramba kuchembera, kuramba nemwaranzi, kushomeka kwekushisa, kutapurirana kwakanaka kwekurira, simba rekunamira rakasimba, biocompatibility yakanakisa uye kuenderana kweropa. Aya mabhenefiti ndiwo chaiwo chikonzero nei polyurethane elastomers ichishandiswa zvakanyanya mumauto, aerospace, acoustics, biology uye mamwe minda.
Nguva yekutumira: Oct-30-2023