Ingaruka zo guhuza ubwiza bw'ibice by'ibumba n'ifu ya kalisiyumu zinc muri polyvinyl chloride (PVC):
Ibikoresho bigabanya ubushyuhe mu by’umwimerere (thiol methyl tin) ni ubwoko bukunze gukoreshwa mu gupima ubushyuhe bwa PVC. Bikorana na aside hydrogen chloride (HCl) muri PVC bigatuma habaho imyunyu ngugu idahumanya (nk'icyuma gishyushya), bityo bikarinda HCl kwirundanya no kugabanya kwangirika no guhinduka umuhondo kw'ibikoresho bya PVC.
Ifu ya kalisiyumu zinc stabilizer ni uruvange rw'umunyu wa kalisiyumu na zinc, ubusanzwe wongerwa mu buryo bw'ifu nziza muri PVC. Ion za kalisiyumu na zinc zombi zifite ubushobozi bwo gutuma PVC ihora ikora neza. Ion za kalisiyumu zishobora kugabanya ibintu bikomoka kuri aside bikorerwa muri PVC no gukora umunyu wa kalisiyumu uhoraho. Ion za zinc zigira ingaruka kuri peroxide ya hydrogen (HCl) muri PVC kugira ngo zikore umunyu udapfa kwangiza kandi zikumire HCl.
Iyo ibikoresho bigabanya ubushyuhe mu byuma bya calcium zinc hamwe n’ifu ya calcium zinc bihuye muri PVC, bishobora guterana inkunga no kunoza ubushobozi bwo kuvura HCl. Ifu ya calcium zinc ishobora gutanga ubushobozi bwo kongera ubushyuhe mu kwangiza HCl nyinshi ikorwa, mu gihe ibikoresho bigabanya ubushyuhe mu byuma bya calcium zinc bishobora gutanga calcium na zinc ions nyinshi, bikarinda HCl kwirundanya. Binyuze muri ubu buryo bwo guhuza, ibikoresho bigabanya ubushyuhe mu byuma bya PVC bishobora kongera ubushyuhe, bikanoza igihe cyo gukora no kudahinduka kw'imikorere.
Byakagombye kumenyekana ko ingano n'ingano ya organic tin na calcium zinc stabilizers bigomba guhindurwa neza hakurikijwe ibisabwa byihariye n'ibidukikije bikoreshwa n'ibicuruzwa bya PVC, kugira ngo bigere ku ngaruka nziza zo guhuza. Muri icyo gihe, ni ngombwa kwitondera ibibazo by'umutekano n'ibidukikije mu gihe cyo kubikoresha kugira ngo hirindwe ingaruka mbi ku buzima bw'abantu n'ibidukikije.
Igihe cyo kohereza: Ugushyingo-30-2023
