I-Polyurethane (PU), igama layo eliphelele i-polyurethane, iyinhlanganisela ye-polymer.Yakhiqizwa u-Otto Bayer nabanye ngo-1937. I-polyurethane inezigaba ezimbili: uhlobo lwe-polyester nohlobo lwe-polyether.Angenziwa amapulasitiki e-polyurethane (ikakhulukazi igwebu), imicu ye-polyurethane (ebizwa ngokuthi i-spandex e-China), irabha ye-polyurethane nama-elastomers.
I-polyurethane ethambile ngokuyinhloko inesakhiwo somugqa we-thermoplastic.Inokusimama okungcono, ukumelana namakhemikhali, ukuqina kanye nezakhiwo zemishini kunezinto ze-PVC zegwebu, futhi ine-deformation encane yokucindezela.Ukufakwa kahle kokushisa, ukwahlukanisa umsindo, ukudlidliza nokusebenza kwe-anti-virus.Ngakho-ke, isetshenziswa njengokupakisha, ukwahlukanisa umsindo, nezinto zokuhlunga.
Ipulasitiki ye-polyurethane eqinile inesisindo esilula, ukuvala umsindo okuhle kakhulu, ukusebenza kokufakwa kokushisa, ukumelana namakhemikhali, ukusebenza kahle kukagesi, ukucutshungulwa kalula, nokumunca amanzi aphansi.Isetshenziswa kakhulu njengempahla yesakhiwo yokwakha, imoto, imboni yezindiza, kanye nokufakwa kwe-thermal.
Izakhiwo ze-polyurethane elastomer ziphakathi kwepulasitiki nerabha, ukumelana nowoyela, ukumelana nokuhuqwa, ukumelana nokushisa okuphansi, ukumelana nokuguga, ubulukhuni obuphezulu nokunwebeka.Isetshenziswa kakhulu embonini yezicathulo kanye nemboni yezokwelapha.I-polyurethane nayo ingasetshenziselwa ukwenza izinto zokunamathisela, ukunamathela, isikhumba sokwenziwa, njll.
I-polyurethane yavela ngawo-1930.Ngemva kweminyaka ecishe ibe ngamashumi ayisishiyagalombili yokuthuthukiswa kobuchwepheshe, le nto isisetshenziswe kabanzi emkhakheni wefenisha yasekhaya, ukwakhiwa, izidingo zansuku zonke, ezokuthutha, nezinto zikagesi zasendlini.
Imakethe yomhlaba wonke ye-polyurethane ikakhulukazi itholakala emazweni athuthukile eYurophu naseMelika.Isifunda sase-Asia-Pacific simelwe kakhulu yiChina, Japan, neNingizimu Korea.Amazwe angenhla kanye nezifunda zenza u-90% wemakethe yomhlaba wonke ye-polyurethane.Phakathi kwazo, ukusetshenziswa kwezwe lami okuphelele kwe-polyurethane kubalwa ingxenye yomhlaba.Kunezinhlobo eziningi zemikhiqizo ye-polyurethane emhlabeni futhi isetshenziswa emikhakheni ehlukahlukene.Ekupheleni kuka-2016, ukukhiqizwa kwe-polyurethane emhlabeni wonke sekufinyelele amathani angaba yizigidi ezingu-22.
Isikhathi sokuthumela: Jun-03-2019