Polyurethane (PU), magaca buuxa ee polyurethane, waa iskudar polymer ah, kaas oo la soo saaray 1937 by Otto Bayer iyo kuwa kale.Polyurethane waxay leedahay laba qaybood oo waaweyn: polyester iyo polyeter.Waxa laga samayn karaa balaastikada poliurethane (badanaa xumbo), fiilooyinka polyurethane (oo loo yaqaan spandex ee Shiinaha), caag poliurethane iyo elastomers.Polyurethane waa maaddo polymer ah oo ku habboon in loo isticmaalo daboolka giraangiraha marka la soo saaro qalabka warshadaha.
Faa'iidooyinka ugu muhiimsan ee casters polyurethane waa inta badan sida soo socota:
Marka hore, waxqabadka qiyaasta la hagaajin karo
Tiro ka mid ah tilmaamayaasha waxqabadka jirka iyo farsamada ayaa lagu hagaajin karaa iyada oo loo marayo xulashada alaabta ceeriin iyo qaaciidooyinka, iyada oo loo marayo kala duwanaansho isbeddel ah oo isbeddel ah, si loo buuxiyo shuruudaha gaarka ah ee isticmaalaha ee waxqabadka alaabta.
Marka labaad, iska caabbinta abrasion sare
Joogitaanka biyaha, saliidda iyo xaaladaha kale ee warbaahinta qoynta, dhejisyada polyurethane waxay xidhaan caabbinta inta badan dhowr jeer ilaa daraasiin jeer qalabka caagga ah ee caadiga ah.Walxaha birta ah sida birta iyo kuwa kale ee adag, laakiin daruuri maaha inay xidhmaan!
Saddexaad, hababka habaynta, ku habboonaanta ballaaran
Elastomers-ka polyurethane waxaa lagu qaabayn karaa caag ujeedo-guud ah iyadoo la isticmaalayo balaastiig, isku darka iyo vulcanizing (MPU);Waxa kale oo laga samayn karaa caag dareere ah, shubid iyo qaabayn ama buufin, shaabadaynta iyo qaabaynta centrifugal (CPU);Waxa kale oo laga samayn karaa maadooyin granular ah iyo balaastiig caadi ah iyadoo la isku duro, extrusion, calendering, dhirbaaxada iyo hababka kale (CPU).Qaybaha qaabaysan ee la isku duray, ee ku dhex jira meel adag oo gaar ah, ayaa sidoo kale la gooyn karaa, la shiidi karaa, qodista iyo farsamaynta farsamada kale.
Afar, caabbinta saliidda, caabbinta ozone, caabbinta gabowga, caabbinta shucaaca, iska caabbinta heerkulka hooseeya, gudbinta dhawaaqa wanaagsan, xoogga koollada xooggan, biocompatibility aad u fiican iyo waafaqid dhiiga.Faa'iidooyinkan ayaa ah sababta dhabta ah ee loo yaqaan 'polyurethane elastomers' si ballaaran loogu isticmaalo militariga, hawada hawada, acoustic, bayoolajiga iyo qaybaha kale.
Waqtiga boostada: Oct-30-2023