PVC ni iki?

Ibinyabutabire bya PVC bishingiye ku ruvange rwa PVC polymer RESIN n'inyongeramusaruro bitanga imvange ikenewe kugira ngo ikoreshwe burundu (Imiyoboro cyangwa Imiterere Ihamye cyangwa Imiterere Ihindagurika cyangwa Amashuka). Ibinyabutabire bikorwa no kuvanga neza ibintu, hanyuma bigahinduka ikintu "gikozwemo gel" bitewe n'ubushyuhe n'imbaraga zo gukata. Bitewe n'ubwoko bwa PVC n'inyongeramusaruro, ibinyabutabire mbere yo gukaraba bishobora kuba ifu itemba (izwi nk'uruvange rwumye) cyangwa amazi mu buryo bwa puwavuro cyangwa umuti.

Imvange za PVC iyo zikozwe hakoreshejwe pulasitiki, zigahinduka ibikoresho byoroshye, ubusanzwe byitwa PVC-P.

Ibikoresho bya PVC iyo byakozwe nta pulasitiki ikoreshwa mu buryo bukomeye bifatwa nka PVC-U.

Ingano ya PVC ishobora gusobanurwa muri make ku buryo bukurikira:

Ifu ikomeye y’uruvange rw’ibikoresho byumye bya PVC (yitwa Resin), irimo n’ibindi bikoresho nk’ibikomeza, inyongeramusaruro, ibirungo, ibikomeza imbaraga, n’ibidakoresha umuriro, bigomba kuvangwa cyane mu mashini zihuza. Kuvanga no gukwirakwiza ni ingenzi cyane, kandi byose bikurikije ubushyuhe bugenwe neza.

Dukurikije uburyo bwakoreshejwe, PVC resin, plasticizer, Filler, stabilizer n'ibindi bikoresho by'inyongera bishyirwa mu mvange ishyushye. Nyuma y'iminota 6-10, shyira mu mvange ikonje (iminota 6-10) kugira ngo uvange mbere. PVC igomba gukoresha mvange ikonje kugira ngo ibintu bitaguma hamwe nyuma yo kuvanga ishyushye.

Ibikoresho byo kuvanga nyuma yo gushyiramo pulasitiki, kuvanga no gukwirakwira neza ku bushyuhe buri hagati ya 155°C-165°C, bishyirwa mu mvange y'ubukonje. Hanyuma PVC ivanze irashonga. Nyuma yo gushyiramo ibyuma, ubushyuhe bwa granules bushobora kugabanuka bukagera kuri 35°C-40°C. Hanyuma nyuma yo gukoresha urushinge rukonjeshwa n'umuyaga, ubushyuhe bwa granules bugabanuka munsi y'ubushyuhe bw'icyumba kugira ngo bwoherezwe mu bubiko bw'ibicuruzwa bya nyuma kugira ngo bipakirwe.