Pakukonza zinthu zolimba za PVC, vuto la mtundu ndi vuto lofala komanso losiyanasiyana lomwe limakhala lovuta kuthetsa pamene chokhazikikacho chikusintha kuchoka pa mchere wa lead kupita ku calcium zinc stabilizer. Zizindikiro zake ndi izi:
1. Kusintha kwa zinthu zokhazikika kumabweretsa kusintha kwa mtundu wa chinthucho. Chokhazikikacho chikasinthidwa kuchoka pa mchere wa lead kukhala calcium zinc stabilizer, zimakhala zosavuta kupeza kuti mtundu wa chinthucho nthawi zambiri umakhala wobiriwira, ndipo zimakhala zovuta kusintha mtundu kuchokera ku wobiriwira kupita ku wofiira.
2. Mtundu wa chinthucho mkati ndi kunja kwake sugwirizana mukatha kugwiritsa ntchito calcium zinc stabilizer. Nthawi zambiri, mtundu wakunja umakhala wabwino pang'ono, pomwe mtundu wamkati umakhala wabuluu-wobiriwira komanso wachikasu. Izi zitha kuchitika mosavuta m'ma profiles ndi mapaipi.
3. Kusintha kwa mitundu ya zinthu panthawi yokonza zinthu mutagwiritsa ntchito zolimbitsa calcium zinc. Pogwiritsa ntchito zolimbitsa mchere wa lead pokonza zinthu, pakhoza kukhala kusiyana kwa mitundu pakati pa makina osiyanasiyana komanso nthawi zosiyanasiyana mkati mwa makina omwewo, koma kusinthaku kumakhala kochepa. Mukagwiritsa ntchito zolimbitsa calcium zinc, kusinthaku kumatha kukhala kwakukulu, ndipo kusintha pang'ono kwa zinthu zopangira ndi njira pa mtundu kungawonekere kwambiri. Wolembayo wakumana ndi zochitika zomwe makasitomala amagwiritsa ntchito zolimbitsa calcium zinc popanga mapaipi ndi zolumikizira, ndipo kusintha kwa kuthamanga sikungokhudza mtundu wa chinthucho, komanso kumakhudza magwiridwe antchito ake. Kusinthaku kumakhala kovuta kwambiri kuposa kugwiritsa ntchito zolimbitsa mchere wa lead.
4. Vuto la mtundu wa zinthu posungira, kunyamula, ndi kugwiritsa ntchito mutagwiritsa ntchito zolimbitsa zachilengedwe za calcium zinc. Zinthu zolimba za PVC zomwe zimagwiritsa ntchito zolimbitsa zachilengedwe za mchere wa lead sizisintha kwambiri mtundu wake posungira, kunyamula, ndi kugwiritsa ntchito. Zitasinthidwa kukhala zolimbitsa zachilengedwe monga calcium ndi zinc, pakhoza kukhala chizolowezi choti zinthuzo zisinthe kukhala zachikasu ndi buluu zitayima. Zina zolimbitsa zimatha kupangitsa kuti zinthuzo zisinthe kukhala zofiira zikagwiritsidwa ntchito pazinthu zomwe zili ndi calcium yambiri.
Chifukwa chachikulu cha mavuto a mtundu omwe ali pamwambapa ndichakuti kapangidwe ka zinthu zokhazikika za calcium zinc ndi kovuta, ndipo kukhazikika kwa kutentha kumayambiriro, pakati, ndi pambuyo pake kumachitika kudzera mu mgwirizano wa zinthu zopangira zingapo. Gawo lililonse lili ndi mphamvu inayake pa mtundu wa chinthucho, ndipo kuphatikiza zinthu zingapo kumapanga mwayi wosiyanasiyana. Nthawi yomweyo, kupsinjika kwa msika kwapangitsa opanga zinthu zokhazikika kugwiritsa ntchito zinthu zopangira zosatsatira malamulo, zomwe zimawonjezera zovuta za vutoli. Kuti athetse vutoli bwino, sikuti ndikofunikira kungofufuza mavuto enieniwo, komanso makampani opanga zinthu za PVC omwe ali pansi pa nthaka ayenera kusankha mosamala makampani akuluakulu komanso odziwika bwino.
Kuyerekeza kusiyana kwakukulu: Zolimbitsa mchere wa lead zakhala zikugwiritsidwa ntchito kwambiri chifukwa cha mphamvu zawo zabwino zotetezera magetsi komanso mtengo wotsika, koma zili ndi mavuto ndi poizoni wambiri komanso kuipitsidwa kwa fumbi.
Nthawi yotumizira: Juni-14-2025
