Magaca Alaabta:polyurethane

Qaab-dhismeedka molecular ee alaabta:

Guryaha Kiimikada:

Polyurethane (PU), magaca buuxa ee poliurethane, waa isku-dhismeed polymer ah. 1937 by Otto Bayer iyo wax soo saarka kale ee alaabtan. Waxaa jira laba nooc oo waaweyn oo ah polyurethane, nooca polyester-ka iyo nooca polyeter-ka. Waxa laga samayn karaa balaastikada poliurethane (badanaa xumbo), fiilooyinka polyurethane (oo loo yaqaan spandex ee Shiinaha), caag poliurethane iyo elastomers.
Polyurethane dabacsan inta badan waa qaab-dhismeed toosan oo leh heerkulbeeg heerkulbeeg ah, kaas oo leh xasillooni ka wanaagsan, caabbinta kiimikaad, adkeysi iyo sifooyin farsamaysan marka loo eego xumbo PVC, oo leh kala duwanaansho cadaadis yar. Waxay leedahay dahaarka kulaylka wanaagsan, dahaarka dhawaaqa, iska caabinta naxdinta leh, iyo sifooyin sun ah. Sidaa darteed, waxaa loo isticmaalaa baakad ahaan, dahaarka dhawaaqa iyo walxaha shaandhaynta. Caag adag oo poliurethane ah waa iftiin, dahaarka dhawaaqa, dahaarka kulaylka sare, caabbinta kiimikada, sifooyinka korantada ee wanaagsan, habaynta sahlan, iyo nuugista biyaha hoose. Waxaa inta badan loo isticmaalaa sida qalab dhismeed oo loogu talagalay dhismaha, baabuurta, warshadaha duulista, dahaarka kulaylka iyo kulaylka. Waxqabadka elastomer Polyurethane ee u dhexeeya caagagga iyo caagga, caabbinta saliidda, caabbinta xidhashada, iska caabbinta heerkulka hooseeya, caabbinta gabowga, adkaanta sare, barti. Waxaa inta badan loo adeegsadaa warshadaha kabaha iyo warshadaha caafimaadka. Polyurethane sidoo kale waxaa laga samayn karaa xabag, dahaar, maqaar synthetic, iwm.

Codsiga:

Polyurethane waa mid ka mid ah walxaha ugu badan ee adduunka maanta jira. Isticmaalkooda badan waxay u dhexeeyaan min xumbo dabacsan oo alaabta guriga korsan, ilaa xumbo adag sida dahaarka gidaarada, saqafyada iyo qalabka ilaa polyurethane thermoplastic ee loo isticmaalo qalabka caafimaadka iyo kabaha, dahaarka, xabagta, elastomers-ka loo isticmaalo sagxadaha iyo gudaha baabuurta. Polyurethane ayaa si sii kordheysa loo isticmaalay soddonkii sano ee la soo dhaafay codsiyo kala duwan sababtoo ah raaxaysigooda, faa'iidooyinka kharashka, kaydinta tamarta iyo deegaanka suurtagalka ah ee deegaanka. Maxay yihiin qaar ka mid ah arrimaha ka dhigaya polyurethane si aad loo jecel yahay? Adkeysiga poliurethane wuxuu si weyn uga qaybqaataa cimriga dheer ee alaabooyin badan. Kordhinta wareegga nolosha badeecada iyo ilaalinta kheyraadka ayaa ah tixgalin deegaan oo muhiim ah oo inta badan door bida doorashada polyurethane[19-21]. Polyurethanes (PUs) waxay u taagan yihiin heerar muhiim ah oo kuleyliyaha kuleyliyaha ah iyo heerkulbeegyada sida makaankooda, kulaylka, iyo alaabada kiimikaad waxaa lagu habeyn karaa falcelinta polyols kala duwan iyo poly-isocyanates.