Musiyano uripo pakati peTPUuye PU?
TPU (polyurethane elastomer)
TPU (Thermoplastic Polyurethane Elastomer)ipurasitiki iri kubuda. Nekuda kwekugona kwayo kugadzikiswa zvakanaka, kuramba mamiriro ekunze, uye hushamwari kune nharaunda, TPU inoshandiswa zvakanyanya mumaindasitiri ane hukama akadai sezvishandiso zveshangu, mapaipi, mafirimu, maroller, tambo, uye waya.
Polyurethane thermoplastic elastomer, inozivikanwawo se thermoplastic polyurethane rabha, yakapfupikiswa se TPU, imhando ye (AB) n-block linear polymer. A ipolyester ine huremu hwakawanda (1000-6000) kana polyether, uye B idiol ine maatomu ecarbon ane 2-12 straight chain. Maumbirwo emakemikoro ari pakati pezvikamu zveAB idiisocyanate, inowanzo batanidzwa neMDI.
Rabha re polyurethane rinoshandisa thermoplastic rinobva pakubatanidza hydrogen pakati pemamorekuru kana kuti kubatanidza zvishoma pakati pemaketani makuru, uye izvi zviviri zvinobatanidza zvinodzokororwa kana tembiricha yakwira kana kuderera. Mumamiriro ekunyunguduka kana kuti emushonga, simba remamorekuru rinopera simba, uye mushure mekutonhodza kana kupwanyika kwemvura, simba rakasimba remamorekuru rinobatana, richidzorera hunhu hwechinhu chakasimba chepakutanga.
Ma elastomer e thermoplastic e polyurethaneinogona kuiswa mumhando mbiri: polyester nepolyether, ine zvidimbu zvichena zvisina kurongeka zvakaita sedenderedzwa kana kuti columnar uye huwandu hwayo hunosvika 1.10-1.25. Rudzi rwepolyether rune huwandu hwakaderera pane hwepolyester. Tembiricha yekuchinja kwegirazi yerudzi rwepolyether i100.6-106.1 ℃, uye yerudzi rwepolyester i108.9-122.8 ℃. Tembiricha yekupwanyika kweganda yerudzi rwepolyether nerudzi rwepolyester yakaderera pane -62 ℃, nepo kuramba tembiricha yakaderera yerudzi rwehard ether kuri nani pane yerudzi rwepolyester.
Hunhu hwakanaka hwe polyurethane thermoplastic elastomers ndehwekuti polyurethane thermoplastic elastomers haipfeki zvakanaka, inopikisa ozone zvakanyanya, inoomesesa zvakanyanya, ine simba rakawanda, inochinjika zvakanaka, inopikisa tembiricha yakaderera, inopikisa mafuta zvakanaka, inopikisa makemikari, uye inopikisa nharaunda. Munzvimbo dzine hunyoro, kugadzikana kwehydrolysis kwepolyester esters kunodarika zvakanyanya kwemhando dzepolyester.
Ma polyurethane thermoplastic elastomers haana chepfu uye haana hwema, anonyungudika muzvinonyungudutsa zvakaita semethyl ether, cyclohexanone, tetrahydrofuran, dioxane, uye dimethylformamide, pamwe chete nemuzvinonyungudutsa zvakasanganiswa zvinosanganisira toluene, ethyl acetate, butanone, uye acetone muhuwandu hwakakodzera. Anoratidza mamiriro asina ruvara uye akajeka uye ane kugadzikana kwakanaka kwekuchengetedza.
Nguva yekutumira: Kubvumbi-22-2024