Umwenda wumuryango ukoreshwa na buri muryango, cyane cyane mugihe cyizuba gishyushye, imibu ni myinshi, urumuri narwo rukomeye cyane, kuburyo mugihe cyizuba kugurisha umwenda wumuryango ugororotse, ubwiza bwibicuruzwa ni garanti yingenzi. Hariho ubwoko bwinshi bwimiryango ikingiriza. Mu ci, mubisanzwe tubona PVC yumuryango woroshye.
burigihe, umwenda ukinguye umwenda ufite ikibazo gisanzwe, nukuvuga, biroroshye guhinduka umuhondo, gusaza vuba, kandi bigira ingaruka zikomeye kumiterere yibicuruzwa, kugaragara nkibi bintu bishobora kureka umukoresha umutwe, ibindi reka urugi rworoshye rwumwenda rukora uruganda. Inganda nyinshi zashakishaga umufasha kugirango zihindure iki kibazo, nazo zagerageje byinshi, zimwe nyuma yo gukoreshwa nubwo zateye imbere, ariko ingaruka ntabwo ari nziza.
Impamvu yabyo nuko umwenda wa PVC ari umuhondo, Ahanini kuberako umwenda wumuryango uba uri hanze, izuba rishobora kumurikirwa bitaziguye, muri rusange amezi atatu cyangwa arenga bizagaragara nkumuhondo, umuhondo muremure cyane. Iyi phenomenon ahanini iterwa nimirasire ya ultraviolet izuba, yangije imiterere ya molekuline yumwenda wa PVC, kuburyo chlorine ya polar ikubiye mumiterere ya PVC mumucyo muremure na okiside bizihutisha kubora kumuhondo bisa na PS na PU. Ibi birashobora gutinda wongeyeho antioxydants nkeya hamwe na stabilisateur yumucyo mugihe cyo kuvanga. Kwiyongera kwa Antioxydants 1010 na UV-531 nibisanzwe birwanya kurwanya gusaza kubicuruzwa bya PVC. Nyamuneka reba.
Nyamara, ibicuruzwa bya PVC bibonerana mubisanzwe birwanya imirasire ya ultraviolet kuruta ibisabwa na antioxydeant, birasabwa ko ibintu bitandukanye bitanga urumuri rukoreshwa muguhuza ari byiza. Ibyinshi mu bifata UV ku isoko ni monomer, kandi ntibishobora kugira ingaruka zikomeye zo kurwanya umuhondo. Ukeneye guhitamo gukuramo ibintu byinshi-UV ikurura, birashobora kugaragara cyane kugirango ugere ku ngaruka ndende itari umuhondo. Kugeza ubu, isoko ryakunze gukoresha ubwoko bwiza bwimikino ya UV ikurura X-2, gusa byujuje ibyifuzo byabakiriya. Guhitamo ibintu birwanya anti-ogisijeni, anti-ultraviolet, ituze ryumucyo wubwoko bwa UV bwinjiza, birashobora rwose guherekeza ibicuruzwa byumuhanda wa plastike.
Igihe cyo kohereza: Werurwe-15-2022