Izina RY'IGICURUZWA:polyurethane

Ibicuruzwa bya molekuline structure

Ibikoresho bya shimi:

Polyurethane (PU), izina ryuzuye rya polyurethane, ni polymer polymer.1937 na Otto Bayer nibindi bicuruzwa byibi bikoresho.Hariho ubwoko bubiri bwingenzi bwa polyurethane, ubwoko bwa polyester nubwoko bwa polyether.Birashobora gukorwa muri plastiki ya polyurethane (cyane cyane ifuro), fibre polyurethane (bita spandex mubushinwa), reberi ya polyurethane na elastomers.
Imiterere ya polyurethane ihindagurika cyane cyane ni umurongo ugizwe na thermoplastique, ifite ituze ryiza, irwanya imiti, kwihanganira imiterere nubukanishi kuruta ifuro ya PVC, hamwe no guhinduka gukabije.Ifite ubushyuhe bwiza, kubika amajwi, kurwanya ihungabana, hamwe nuburyo bwo kurwanya uburozi.Kubwibyo, ikoreshwa nko gupakira, kubika amajwi no kuyungurura ibikoresho.Plastike ya polyurethane iroroshye, iringaniza amajwi, iruta iyindi yumuriro, irwanya imiti, ibikoresho byiza byamashanyarazi, gutunganya byoroshye, hamwe no kwinjiza amazi make.Ikoreshwa cyane nkibikoresho byubaka mubwubatsi, ibinyabiziga, inganda zindege, kubika ubushyuhe hamwe nubushyuhe bwumuriro.Imikorere ya polyurethane elastomer hagati ya plastiki na reberi, kurwanya amavuta, kwihanganira kwambara, kurwanya ubushyuhe buke, kurwanya gusaza, gukomera cyane, elastique.Ikoreshwa cyane mubikorwa byinkweto ninganda zubuvuzi.Polyurethane irashobora kandi gukorwa mubifata, gutwikira, uruhu rwubukorikori, nibindi.

Gusaba:

Polyurethanes ni kimwe mu bikoresho bitandukanye ku isi muri iki gihe.Imikoreshereze yabo myinshi itangirira ku ifuro ryoroshye mu bikoresho bifunze, kugeza ku ifuro rikomeye nko gukingira inkuta, ibisenge n'ibikoresho kugeza kuri polyurethane ya termoplastique ikoreshwa mu bikoresho by'ubuvuzi n'inkweto, kugeza ku mwenda, ibifunga, kashe na elastomeri bikoreshwa hasi no mu modoka.Polyurethanes yagiye ikoreshwa cyane mumyaka mirongo itatu ishize mubikorwa bitandukanye bitewe nibyiza, inyungu zamafaranga, kuzigama ingufu hamwe nibidukikije byangiza ibidukikije.Nibihe bimwe mubintu bituma polyurethanes yifuzwa cyane?Kuramba kwa polyurethane bigira uruhare runini mubuzima burebure bwibicuruzwa byinshi.Kwagura ubuzima bwibicuruzwa no kubungabunga umutungo ni ibintu byingenzi bitekereza ku bidukikije bikunze guhitamo polyurethanes [19-21].Polyurethanes (PUs) igereranya icyiciro cyingenzi cya polimoplastike na polymositike ya polimeri kuko imiterere yubukanishi, ubushyuhe, nubumara bishobora guhuzwa nigikorwa cya polyole zitandukanye na poly-isocyanates.