Polyurethane elastomers ndeye block polymers, kureva, polyurethane macromolecules inoumbwa ne "zvinyoro zvikamu" uye "yakaoma zvikamu" uye inoumba micro-phase kupatsanurwa chimiro, umo zvikamu zvakaoma (kubva isocyanates uye cheni extenders) akaparadzirwa munyoro. chikamu chikamu dunhu (kubva kuoligomer polyols) kutamba chinzvimbo chemuviri muchinjiko-yekubatanidza mapoinzi.Naizvozvo, zvichienzaniswa nemamwe marabha ekugadzira (elastomers), polyurethane elastomers ane simba riri nani uye nekupfeka kuramba, Kureba kwepamusoro kunogona kuchengetedzwa kana kuoma kwacho kwakakwira.
Elastic polyurethane zvinhu, zvinodaidzwa se "CASE" kunze kwenyika, kunyanya zvinosanganisira zvechinyakare polyurethane elastomer zvigadzirwa, paving zvinhu zvakaita se polyurethane epurasitiki runways, polyurethane mvura isina mvura, zvinonamira, sealants, potting adhesives, nezvimwewo, accounting inosvika makumi mana muzana yehuwandu hwese. ye polyurethane zvigadzirwa.Zvizhinji zvezvigadzirwa zvakarapwa zveCASE zvinhu (mvura-yakavakirwa uye yakanyungudika yakavakirwa zvigadzirwa mushure mekubvisa mvura nezvinonyungudutsa) hazvisi furo elastic polyurethane zvinhu.PU synthetic leather resin, mamwe machira uye zvinonamira zvinonyungudutsa-based kana mvura-based zvigadzirwa, izvo zvinogona zvakare kutariswa se polyurethane elastomer zvinhu mupfungwa yakafara.Mupfungwa nhete, polyurethane elastomers zvinoreva castable polyurethane elastomers (CPU), thermoplastic polyurethane elastomers (TPU) uye yakasanganiswa polyurethane elastomers (MPU), inoverengera 10% kana zvishoma zvishoma yehuwandu hwehuwandu hwepolyurethane.CPU uye TPU ndiwo makuru e polyurethane elastomers, uye misiyano yavo iri mukugadzira maitiro uye cheni marefu.Idzi rudzi rwechinyakare polyurethane elastomer, inozivikanwawo se "polyurethane rabha", ndeyemhando yakakosha yerabha yakagadzirwa.High-performance polyurethane elastomer ndiyo yakanakisa kusagadzika zvinhu pakati pezvese zvekugadzira polymer zvinhu, inozivikanwa se "mambo wekupfeka resistance", uye inoshandiswa zvakanyanya mundima dzakawanda, uye zvikumbiro zvitsva zvichiri kuwedzera.
Polyurethane elastomer inogona kushandiswa kutsiva simbi, mapurasitiki uye akajairwa rabha mune mamwe minda.
Kana ichienzaniswa nemidziyo yesimbi, polyurethane elastomer ine zvakanakira uremu huremu, ruzha rwakadzika, kuramba kupfeka, mutengo wakaderera wekugadzirisa uye acid corrosion resistance.Kuenzaniswa nemapurasitiki, ine zvakanakira kusimba kwakanyanya uye yakakwirira kupfeka kuramba.Kana ichienzaniswa nerabha yakajairika, polyurethane elastomer ine zvakanakira kupfeka kuramba, kucheka kuramba, kuramba kubvarura, kukwirira kwekutakura, ozone kuramba, nezvimwewo, uye iri nyore kugadzira, inogona kudirwa, kudirwa, uye ine huwandu hwakasiyana hwekuoma.
Nguva yekutumira: Feb-14-2023