Polyurethane (PU), le igoa atoa o le polyurethane, o se polymer compound, lea na gaosia i le 1937 e Otto Bayer ma isi. Polyurethane e lua vaega autu: polyester ma polyether. E mafai ona faia i latou i polyurethane plastics (tele foam), polyurethane fibers (ua taʻua o le spandex i Saina), polyurethane paʻu ma elastomers. Polyurethane o se mea polymer e lelei mo le faʻaaogaina e fai ma ufiufi uili i le gaosiga o fale gaosi oloa.
O faʻamanuiaga autu o polyurethane casters e masani lava e pei ona taua i lalo:
Muamua, o le faʻatinoga o le fetuutuunai laina
E mafai ona fetu'una'i le tele o fa'ailoga fa'atino fa'aletino ma fa'ainisinia e ala i le filifilia o mea mata'utia ma fua fa'atatau, i totonu o se fa'avasegaga o suiga fetu'una'i, ina ia fa'amalieina mana'oga fa'apitoa a le tagata fa'aoga mo le fa'atinoga o oloa.
Lona lua, maualuga abrasion tetee
I le i ai o le vai, suauu ma isi ala o faasalalauga susua tulaga galue, casters polyurethane ofuina tetee e masani ona tele taimi i le tele o taimi o mea pa'u masani. O mea u'amea e pei o u'amea ma isi malo malō, ae le fa'apea e fa'alavalava!
Tolu, auala fa'agaioiga, lautele fa'aoga
Polyurethane elastomers e mafai ona faʻapipiʻiina i le paʻu faʻapitoa e ala i le faʻapipiʻiina, faʻafefiloi ma le vulcanizing (MPU); e mafai fo'i ona fai i le pa'u vai, sasa'a ma fa'asolo po'o le fa'asalaina, fa'amaufa'ailogaina ma fa'aputuga (CPU); e mafai foi ona faia i latou mea granular ma palasitika masani e tui, extrusion, calendering, feula ma isi faiga (CPU). O vaega faʻapipiʻi poʻo tui tui, i totonu o se tulaga faigata, e mafai foi ona tipi, olo, viliina ma isi gaioiga faʻainisinia.
Lona fa, o le suauu tete'e, ozone tetee, matua tetee, radiation tetee, maualalo le vevela tetee, lelei leo felauaiga, malosi pipii malosi, lelei biocompatibility ma toto fetaui. O nei tulaga lelei o le mafuaʻaga tonu lea e faʻaaogaina lautele ai polyurethane elastomers i le militeli, aerospace, acoustics, biology ma isi fanua.
Taimi meli: Oke-30-2023