Inganda FOAM “sitasiyo yo kwishyuza” |Inshamake ya polyurethane yoroheje ifuro

Ibicuruzwa bya polyurethane byoroheje bikubiyemo cyane cyane harimo guhagarika, guhoraho, sponge, kwihanganira ifuro ryinshi (HR), ifuro ryuruhu rwonyine, ifuro ryihuta ryihuta, ifuro rya microporome hamwe nigice kinini gikurura ingufu.Ubu bwoko bwa furo buracyafite hafi 50% yibicuruzwa byose bya polyurethane.Hariho ibicuruzwa byinshi bitandukanye kandi uburyo bwo kubikoresha buragenda bwiyongera, kandi bagize uruhare mubice bitandukanye byubukungu bwigihugu: ibikoresho byo murugo, imodoka, guteza imbere urugo, ibikoresho, gariyamoshi, amato, ikirere nizindi nzego nyinshi.Kuva haza PU yoroshye ifuro mu myaka ya za 1950, cyane cyane nyuma yo kwinjira mu kinyejana cya 21, ikoranabuhanga, ibintu bitandukanye, nibisohoka mu bicuruzwa byose byasimbutse.Ibikurubikuru birimo: ibidukikije byangiza ibidukikije PU byoroshye, aribyo bicuruzwa bya polyurethane;agaciro ka VOC agaciro PU yoroshye ifuro;atome nkeya PU yoroshye ifuro;amazi yuzuye PU ifuro ryoroshye;byuzuye MDI ikurikirana yoroshye ifuro;flame retardant, umwotsi muke, MDI yuzuye ifuro;Inyongeramusaruro nshya nka catalizaires polymer reaction, stabilisateur, flame retardants na antioxydants;polyoli hamwe no kudahaza kwinshi hamwe na alcool nkeya;ultra-low density PU yoroheje ifuro ifite imiterere myiza yumubiri;inshuro nke ya resonance, Kwimura gake PU yoroshye ifuro;polikarubone diol, polyε-caprolactone polyol, polybutadiene diol, polytetrahydrofuran nizindi polyoli zidasanzwe;Amazi ya CO2 yifuro ya tekinoroji, tekinoroji itari nziza ya tekinoroji, nibindi. Muri make, kuvuka kwubwoko bushya nubuhanga bushya byateje imbere iterambere rya PU yoroshye.

Ihame

Kugirango ushushanye icyiza cyiza cya PU cyujuje ibisabwa, birakenewe gusobanukirwa ihame ryimiti yimikorere ya sisitemu ya furo kugirango uhitemo ibikoresho fatizo byingenzi kandi bifasha hamwe nuburyo bwo gukora.Iterambere ryinganda za polyurethane ntikiri intambwe yo kwigana, ahubwo igerwaho hifashishijwe imiterere fatizo hamwe na synthesis inzira ikurikije imikorere yibicuruzwa byanyuma.Polyurethane ifuro igira uruhare muguhindura imiti mugihe cya synthesis, kandi ibintu bigira ingaruka kumiterere yifuro biragoye, ntabwo birimo gusa imiti yimiti ya isocyanate, polyether (ester) inzoga namazi, ariko na chimie ya colloid yo kubira ifuro.Imiti yimiti irimo kwagura urunigi, kubira ifuro no guhuza.Ihindura kandi imiterere, imikorere nuburemere bwa molekuline yibintu bigira uruhare mubitekerezo.Igisubizo rusange muri synthesis ya polyurethane ifuro irashobora kugaragazwa nuburyo bukurikira: