Nigute wahitamo uturindantoki twa nitrile tudafite halogen? Uturindantoki twa Lijiejing tudafite halogen ni amahitamo meza.

Uturindantoki twa Lijiejing-Free Nitrile Tugenzurwa mu buryo buhamye binyuze muri sisitemu ifunganye y’ibice bitatu by’ “igenzura ry’uburyo ibikoresho bikomoka ku isoko bigenzurwa, igenzura ry’uburyo ibintu bikomoka ku isoko bigenzurwa mu buryo bunonosoye, n’isuzuma ry’uburyo ibicuruzwa birangira neza.” Ingamba zihariye zirimo: Guhitamo ibikoresho bikomoka ku isoko: Kuraho uburyo halogen ishyirwa mu cyiciro cy’ibikoresho fatizo ukoresheje latex ya nitrile idafite halogen nyinshi cyangwa halogen, ukareba ko halogen ikoreshwa ≤150ppm. Kugenzura neza uburyo ibintu bikomoka ku isoko bishyirwa mu isoko: Inyongeramusaruro zose, harimo n’ibintu bitera imbaraga n’ibinyabutabire, bitoranywa mu bwoko budafite halogen kandi butangiza ibidukikije, nka sisitemu ya vulcanization idafite halogen. Nubwo izi nyongeramusaruro zirengera ibidukikije zitwara ikiguzi kinini, zirinda ko halogen ishyirwa mu isoko. Kugenzura neza uburyo ibintu bikomoka ku isoko bishyirwa mu isoko: Gutunganya uburyo bwo gukora polymerization mu gihe cyose cyo gukora kugira ngo bigabanye ibisigazwa bya halogen. Kugenzura neza ubushyuhe, umuvuduko, n’igihe cyo gukora mu gihe cyo gukora polymerization ya emulsion. Gukoresha uburyo bwa polymerization bwiganje kugira ngo ugabanye ibikomoka kuri halogen bya hydrocarbon - nubwo byongera ingufu, ibi bigabanya cyane ingano ya halogen. Gukaraba no Gusukura: Latex yo mu gihe cyo gukaraba nyuma ya polymer inyura mu nzira ihuriweho yo koza amazi inshuro 3-5 mu byiciro byinshi + gutandukanya amazi hakoreshejwe centrifugal. Amazi yakuwemo iayoni akuramo neza halogen monomers n'inyongera zisigaye, birenga cyane urugero rwa 1-2 rwo koza ku gatambaro gasanzwe. Ikoranabuhanga ryo kumisha mu bushyuhe buke (≤90°C) cyangwa gukamisha mu cyuma gishyuha rikoreshwa mu gukumira kwangirika kw'ibintu no gukora halogen iterwa n'ubushyuhe bwinshi, bigatuma hagumaho halogen ihamye. Kugenzura neza imiterere ya chlorine yo koza: Ingano ya chlorine mu gikoresho cyo koza igenzurwa cyane kuri 350-600 ppm, igihe cyo koza kigenzurwa ku munota wa 0.3-1, kuringaniza ubushobozi bwo gusukura n'ingaruka za halogen zisigaye. Isuzuma ry'uburyo bwo gukaraba: Gusohora igenzura ry'uburyo bwo gukaraba hakoreshejwe Batch-by-Batch Bishyiraho sisitemu yo gupima neza ifite chromatographs za ion, X-ray fluorescence spectrometers, n'ibindi bikoresho. Ikora isesengura ry'ingano ya chlorine (Cl) na bromine (Br) muri buri cyiciro, igera ku ngero za ppm cyangwa ndetse no kumenya aho ibintu biherereye ku rwego rwa ppb. Kubahiriza cyane amahame mpuzamahanga bireba kubahiriza amabwiriza ya IEC na RoHS: chlorine (Cl) na bromine (Br) biri munsi ya 900 ppm buri kimwe, halogen yose iri munsi ya 1500 ppm, hamwe n'ibicuruzwa bimwe na bimwe bigera ku rugero rwa halogen ruri munsi ya 50 ppm cyangwa munsi yayo.