Sesengura ibyiza n'ibibi by'ibyuma bicukura ibyuma bya polyurethane mu nganda

Icupa rya polyurethane rikozwe mu cyuma ni ubwoko bwa icupa rifite ibikoresho bya polyurethane, rifatanye n'icupa rya ferment, icupa rya ferment cyangwa icupa rya plate, rituje, ripima buhoro kandi rihendutse, kandi rikwiriye ahantu henshi hakorerwa imirimo.
Ubusanzwe, ingano y'udupira tw'inganda ni hagati ya santimetero 100-200, aho utupine twa polyurethane ari two twiza cyane. Amapine ya polyurethane afite ubushobozi bwo guhangana n'ubushyuhe bwinshi, imikorere itandukanye yo guhindurwa, uburyo butandukanye bwo kuyatunganya, uburyo bwo kuyakoresha mu buryo bwagutse, kandi arwanya amavuta, ozone, gusaza, imirasire, ubushyuhe buke, nibindi, ijwi ryiza, imbaraga zikomeye zo gufata, ubushobozi bwiza bwo guhuza neza umubiri n'amaraso.

Amasasu ya polyurethane arangwa ahanini n'ibintu bikurikira:
1. Imikorere myinshi ishobora guhindurwa. Binyuze mu guhitamo ibikoresho fatizo no guhindura formula, ishobora guhinduka mu buryo butandukanye mu bipimo by’imikorere bitandukanye n’iy’ikoranabuhanga, kugira ngo ihuze n’ibyo umukoresha akeneye ku mikorere y’ibicuruzwa. Urugero, elastome za polyurethane zishobora gukorwamo imigozi yoroshye yo gucapa n’imigozi ikomeye y’icyuma kugira ngo ihuze n’ibyo abakoresha batandukanye bakeneye.
2. Ubudahangarwa buhebuje bwo kwangirika. Iyo hari amazi, amavuta n'ibindi bikoresho bitose, ubudahangarwa bw'ibikoresho bya polyurethane buruta inshuro nyinshi kugeza ku nshuro nyinshi ibikoresho bisanzwe bya kabutike.

3. Uburyo butandukanye bwo gutunganya no gukoresha mu buryo bwagutse. Elastomer ya polyurethane ishobora gutegurwa hakoreshejwe uburyo bwa pulasitiki, kuvanga no gukurura (bivuga MPU); ishobora kandi gukorwamo karubo y'amazi, gucura cyangwa gutera, gusya no gukurura (bivuga CPU); ishobora kandi gukorwamo ibikoresho by'ibinyabutabire no gucurwa hakoreshejwe uburyo bwa injection, extrusion, calendering, blow molding n'izindi nzira (bivuga CPU).
4. Irwanya amavuta, ozone, gusaza, imirasire, ubushyuhe buke, ijwi ryiza, imbaraga zikomeye zo gufata, ubushobozi bwo guhuza neza umubiri n'amaraso.

Ariko, elastome za polyurethane zifite ingaruka mbi zimwe na zimwe, nko kuba ubushyuhe bwinshi bw’umwimerere, ubushyuhe bwinshi muri rusange, cyane cyane ubushyuhe n’ubukonje, ntizirwanya solvents zikomeye zo mu bwoko bwa polar hamwe n’aside na alkali zikomeye.