Polyurethane (PU), o lona igoa atoa o le polyurethane, o se polymer compound.Na gaosia e Otto Bayer ma isi i le 1937. Polyurethane e lua vaega: polyester type ma polyether type.E mafai ona faia i latou i polyurethane plastics (tele foam), polyurethane fibers (taʻua spandex i Saina), polyurethane paʻu ma elastomers.
O le polyurethane vaivai e masani lava ona i ai se fausaga laina vevela.E sili atu le mautu, teteʻe vailaʻau, maufetuunaʻi ma mea faʻainisinia nai lo mea PVC foam, ma e itiiti ifo le faʻalavelave faʻalavelave.Fa'asalaina lelei le vevela, fa'amalo leo, fa'ato'a vibration ma fa'atinoga fa'ama'i.O le mea lea, e faʻaaogaina e pei o le afifiina, faʻamalama leo, ma mea faamama.
O le palasitika polyurethane maʻaʻa e mama le mamafa, sili ona lelei le faʻaogaina o le leo, faʻaogaina o le vevela, faʻamaʻi vailaʻau, lelei le eletise, faʻaogaina faigofie, ma le maualalo o le vai.E masani ona faʻaaogaina e avea o se mea faʻavae mo le fausiaina, taʻavale, vaalele vaalele, ma le faʻamafanafanaina.
O meatotino o le polyurethane elastomer o loʻo i le va o le palasitika ma le paʻu, le suauʻu teteʻe, le faʻafefeteina o le vevela, le maualalo o le vevela, le matua tetee, le maualuga o le maaa ma le elasticity.Fa'aaoga masani i le fale seevae ma falema'i.Polyurethane e mafai foi ona faʻaaogaina e fai ai mea faʻapipiʻi, paʻu, paʻu synthetic, ma isi.
Polyurethane na aliali mai i le 1930s.Ina ua maeʻa le toeitiiti atoa le valusefulu tausaga o le atinaʻeina o tekonolosi, o lenei mea ua faʻaaogaina lautele i le fanua o meafale, fausiaina, mea e manaʻomia i aso taʻitasi, felauaiga, ma meafale.
Ole maketi ole polyurethane ole lalolagi e tele lava ina iai i atunuʻu atinaʻe i Europa ma Amerika.O le itulagi o Asia ma le Pasefika o loʻo faʻatusalia e Saina, Iapani, ma Korea i Saute.O atunuu ma itulagi o loʻo i luga e faʻatatau mo le 90% o le maketi o le polyurethane i le lalolagi.Faatasi ai ma i latou, o le aofaʻi o le faʻaaogaina o polyurethane a loʻu atunuu e faʻatatau mo le afa o le lalolagi.E tele ituaiga o polyurethane oloa i le lalolagi ma o loʻo faʻaaogaina i vaega eseese.E oo atu i le faaiuga o le 2016, o le aofaiga atoa o le polyurethane i le lalolagi ua oʻo atu i le 22 miliona tone.
Taimi meli: Iuni-03-2019