Oloa

Polyurethane (PU), o le igoa atoa o le polyurethane, o se polymer compound.Na faia e Otto Bayer i le 1937. Ua vaevaeina le polyurethane i ni vaega se lua: ituaiga polyester ma le polyether type.E mafai ona fai i ni palasitika polyurethane (e masani lava o palasitika foamed), alava polyurethane (taʻua spandex i Saina), polyurethane paʻu ma elastomers.

Polyurethane vaivai e masani lava o se fausaga laina thermoplastic, lea e sili atu le mautu, vailaʻau tetee, maufetuunaʻi ma mea faʻainisinia nai lo mea PVC foam, ma e itiiti ifo le faʻalavelave faʻalavelave.O lo'o i ai le fa'amalo lelei o le vevela, fa'amalo leo, tete'e fa'ate'ia ma le fa'atinoga o le anti-virus.O le mea lea, e faʻaaogaina e pei o le afifiina, faʻamalama leo, mea faamama.

O le palasitika polyurethane malosi e mama i le mamafa, sili ona lelei i le faʻaogaina o le leo ma le vevela, faʻamaʻi faʻamaʻi, mea eletise lelei, faʻaogaina faigofie, ma le maualalo o le vai.E masani ona faʻaaogaina i le fausiaina, taʻavale, vaalele vaalele, mea faʻapipiʻi faʻamaʻaina vevela.

O le faʻatinoga o le polyurethane elastomer o loʻo i le va o le palasitika ma le paʻu, o le suauʻu faʻafefe, faʻaofuofu teteʻe, maualalo le vevela teteʻe, matua tetee, maualuga maaa ma elasticity.Fa'aaogaina i le alamanuia seevae ma alamanuia faafomai.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 80 tausaga o le atinaʻeina o tekonolosi, o lenei mea ua faʻaaogaina lautele i le fanua o meafale, fausiaina, mea e manaʻomia i aso uma, felauaiga, ma meafale.