Igoa o oloa:polyurethane

Fua mole mole oloa:

Meatotino tau vailaau:

Polyurethane (PU), o le igoa atoa o le polyurethane, o se polymer compound. 1937 e Otto Bayer ma isi gaosiga o lenei mea. E lua ituaiga tetele ole polyurethane, 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 faigofie e masani lava o se laina laina ma le thermoplasticity, lea e sili atu le mautu, vailaʻau faʻamalosi, maufetuunaʻi ma mea faʻainisinia nai lo le PVC foam, faʻatasi ai ma le faʻaitiitia o le fesuiaiga o le faʻamalosi. O lo'o i ai le mafanafana lelei, fa'amalo leo, tete'e fa'ate'ia, ma mea fa'ama'i. O le mea lea, e faʻaaogaina e pei o le afifiina, faʻamalama leo ma mea faʻamamaina. O le palasitika polyurethane maʻaʻa e mama, faʻamalo leo, faʻamalama sili atu, faʻamaʻi vailaʻau, mea eletise lelei, faʻaogaina faigofie, ma le maualalo o le vai. E masani ona faʻaaogaina e fai ma mea faʻavae mo le fausiaina, taʻavale, vaalele vaalele, faʻafefe vevela ma faʻamaʻi vevela. Polyurethane elastomer faʻatinoga i le va o palasitika ma paʻu, suauʻu teteʻe, ofuina teteʻe, maualalo le vevela tetee, matua tetee, maualuga maaa, elasticity. E masani ona faʻaaogaina i le fale seevae ma falemaʻi. E mafai foi ona fai le polyurethane i mea faʻapipiʻi, paʻu, paʻu gaosia, ma isi.

Talosaga:

Polyurethanes o se tasi o mea sili ona faʻaogaina i le lalolagi i aso nei. O le tele o latou faʻaoga e afua mai i le foam fetuutuunai i meaafale faʻapipiʻi, i le foam malo e pei o le faʻamalama i puipui, taualuga ma mea faigaluega i polyurethane thermoplastic faʻaaogaina i masini faʻafomaʻi ma seevae, e faʻapipiʻi, faʻapipiʻi, sealants ma elastomers faʻaaogaina i luga o fola ma totonu o taavale. Polyurethanes ua faʻateleina le faʻaaogaina i le tolusefulu tausaga talu ai i le tele o talosaga ona o latou faʻamafanafanaga, tau aoga, faʻasaoina o le malosi ma le lelei o le siosiomaga. O a nisi o mea e mafua ai ona manaʻomia tele polyurethanes? Polyurethane tumau e saofagā tele i le umi o le ola o le tele o oloa. O faʻaopoopoga o le taamilosaga o le ola o oloa ma le faʻasaoina o punaoa o ni iloiloga taua o le siosiomaga e masani ona fiafia i le filifilia o polyurethanes[19-21]. Polyurethanes (PUs) o loʻo faʻatusalia se vasega taua o polymers thermoplastic ma thermoset ona o latou mea faʻainisinia, vevela, ma vailaʻau e mafai ona faʻaogaina e ala i le tali atu o polyols eseese ma poly-isocyanates.