M'dziko la polima, zowonjezera zochepa zimagwira ntchito mwakachetechete koma mogwira mtima ngati zolimbitsa sopo zachitsulo. Mankhwala osunthikawa ndi msana wa PVC (polyvinyl chloride) kukhazikika, kuwonetsetsa kuti chilichonse kuyambira mapaipi olimba mpaka mafilimu osinthika amasunga kukhulupirika kwake pakutentha, kupsinjika, komanso nthawi. Kwa opanga ndi mainjiniya omwe amayang'anira zofunikira zakupanga kwamakono kwa PVC, kumvetsetsa momwe amagwiritsira ntchito siukadaulo chabe - ndikofunikira kuti mupereke zinthu zolimba, zapamwamba kwambiri.
Kodi Metal Soap Stabilizers ndi chiyani?
Zitsulo sopo stabilizersNdi mankhwala a organometallic opangidwa ndikuchitapo kanthu mafuta acid (monga stearic kapena lauric acid) ndi zitsulo zachitsulo kapena hydroxides. Zitsulo zodziwika bwino zimaphatikizapo calcium, zinki, barium, cadmium (ngakhale zimachotsedwa chifukwa cha chilengedwe), ndi magnesium. Matsenga awo ali pakulinganiza maudindo awiri ofunika: kukhazikika kwa PVC panthawi yotentha kwambiri (extrusion, kuumba jekeseni) ndikuyiteteza kuti isawonongeke kwa nthawi yaitali m'madera ogwiritsidwa ntchito kumapeto.
Chifukwa chiyani PVC Ikhoza't Pitirizani Popanda Iwo
PVC ndi zida zogwirira ntchito, koma ili ndi chidendene cha Achilles: kusakhazikika kwamafuta. Ikatenthedwa pamwamba pa 160 ° C (kutentha koyenera kukonzedwa), maunyolo a polima a PVC amasweka, ndikutulutsa hydrochloric acid (HCl) podzipangitsa kuti ifulumire. "Dehydrochlorination" iyi imatsogolera ku mtundu, kufooka, ndi kutayika kwa mphamvu zamakina - zolakwika zowopsa pakugwiritsa ntchito ngati mapaipi amadzi kapena machubu azachipatala.
Metal soap stabilizers amasokoneza kuzunguliraku kudzera munjira zitatu zazikulu:
Kusintha kwa HCl: Amachepetsa mamolekyu owopsa a HCl, kuwalepheretsa kuwononganso.
Kusintha kwa Ion: Amalowetsa maatomu osakhazikika a klorini mu tcheni cha polima ndi magulu okhazikika achitsulo a carboxylate, akuchepetsa kuwonongeka.
Chithandizo cha Antioxidant: Mapangidwe ambiri amagwira ntchito mogwirizana ndi ma antioxidants kuti azimitsa ma radicals aulere, zomwe zimachitika chifukwa cha kutentha komanso kuwonekera kwa UV.
Ntchito zazikulu mu PVC Manufacturing
Zolimbitsa sopo zachitsulo zimawala pazinthu zingapo za PVC, chilichonse chimafuna magwiridwe antchito:
Ubwino Umene Umapangitsa Kutengera Ana
Nchiyani chimapangitsa zolimbitsa sopo zachitsulo kukhala zofunika kwambiri pakukonza PVC? Kuphatikizika kwawo kwapadera kwabwino:
YotakataKugwirizana: Amagwira ntchito mosasunthika ndi mapulasitiki, mafuta opangira mafuta, ndi zodzaza (mwachitsanzo,calcium carbonate), kufewetsa kapangidwe.
Magwiridwe Ogwirizana: Posintha masinthidwe achitsulo (mwachitsanzo, apamwambazinkipa kusinthasintha, kashiamu wochulukira wokhazikika), opanga amatha kukonza bwino kukhazikika pazosowa zenizeni.
Kutsata Malamulo: Calcium-zincmachitidwe amakwaniritsa miyezo yapadziko lonse lapansi yokhudzana ndi chakudya, madzi amchere, komanso kawopsedwe kakang'ono - kofunikira kuti ogula akhulupirire.
Mtengo-Kuchita bwino: Amapereka kukhazikika kwamphamvu pamtengo wotsika poyerekeza ndi njira zina monga organotins, zomwe zimawapangitsa kukhala abwino kupanga ma voliyumu apamwamba.
Tsogolo: Zokhazikika komanso Zochita Zapamwamba
Pamene makampani akusintha kukhala okhazikika, zolimbitsa thupi zazitsulo zikukulanso. Mapangidwe a Calcium-zinc, makamaka, alowa m'malo mwa zokhazikika zamtundu wa heavy-metal-based stabilizers (mongakutsogolerakapena cadmium) kuti mukwaniritse zolinga zokomera chilengedwe. Zatsopano za sopo zachitsulo "zobiriwira" - kugwiritsa ntchito mafuta acids ongowonjezwdwa kapena zonyamulira zowola - zikuchepetsanso malo awo achilengedwe osataya ntchito.
Mwachidule, zolimbitsa sopo zazitsulo ndizoposa zowonjezera-ndizothandizira. Amasintha kuthekera kwa PVC kukhala kudalirika, kuwonetsetsa kuti mapaipi, mbiri, ndi makanema omwe timadalira amachita mosasinthasintha, motetezeka, komanso molimba. Kwa opanga omwe akufuna kukhala patsogolo pamsika wampikisano, kusankha chokhazikika chachitsulo chokhazikika sichosankha chaukadaulo - ndikudzipereka kuti ukhale wabwino.
Mwakonzeka kukhathamiritsa mapangidwe anu a PVC? Tiyeni tilumikizane kuti tiwone momwe sopo wokhazikika wachitsulo angakwezere malonda anu.
Nthawi yotumiza: Jul-25-2025