Zotsatirazi ndi ndemanga ya momwe amagwiritsira ntchito methyl tin stabilizers pokonza PVC, kutengera momwe amagwirira ntchito komanso momwe amagwirira ntchito m'makampani:
1, zochitika za ntchito ndi kusinthasintha kwaukadaulo
1. Kukonza zinthu zolimba zowonekera bwino
Yoyenera mapepala owonekera a PVC, ma board, mafilimu ochepetsa kutentha kwambiri komanso zinthu zina, pogwiritsa ntchito utomoni wa PVC, kuwala kwa chinthucho kumatha kufika pa 90%, ndipo palibe mvula kapena chikasu.
2. Njira zodziwika bwino: kupanga zozungulira, kupanga zotulutsa
Fomula yovomerezeka: Kuchuluka kowonjezera 1.2-1.6 phr (potenga makulidwe a filimu 0.1-0.3mm mwachitsanzo)
3. Kupanga mapaipi ndi ma profiles
Yogwiritsidwa ntchito popanga zipangizo zomangira monga mapaipi operekera madzi ndi zitseko ndi mawindo apulasitiki, imatha kuletsa kukhuthala ndi kuwonongeka kwa PVC panthawi yokonza kudzera mu kutentha kwa nthawi yayitali, ndikuwonjezera moyo wa zinthuzo wokana nyengo ndi zoposa 30%.
4. Malo osungira chakudya/mankhwala
Mogwirizana ndi miyezo ya ukhondo ya EU ROHS ndi US ASTM D3421, yomwe imagwiritsidwa ntchito m'mabotolo a zakudya, mabotolo opaka mankhwala, ndi zina zotero, kuchuluka kwa zitsulo zolemera zomwe zili mu mankhwalawa kuli pansi pa 0.1 ppm.
2, Kuyerekeza ubwino wa ntchito
| Kukula kwa magwiridwe antchito | Chokhazikitsa chitsulo cha Methyl | Chokhazikitsa mchere chachikhalidwe |
| Kapangidwe koyambirira kopaka utoto | Madzi oyera | Amakhala achikasu nthawi zambiri |
| Kukhazikika kwa kutentha | Kwa nthawi yayitali (≥ 180 ℃ kukhazikika kosalekeza) | Chiwopsezo chachikulu cha kulephera kwapakati pa nthawi |
| Chitetezo ndi kusamala chilengedwe | Kwa nthawi yayitali (≥ 180 ℃ kukhazikika kosalekeza | Zoipitsa za lead/cadmium |
| Kuthekera Kokonza | Zimagwirizana ndi njira yonse yogwiritsira ntchito PVC yolimba/yofewa | Zogulitsa zolimba zokha |
Chidziwitso: Deta iyi imachokera ku kuyerekeza kwa miyeso yeniyeni yomwe makampani opanga PVC adachita mdziko muno komanso padziko lonse lapansi.
3, Njira Yokonzera Njira Yosinthira Machitidwe
1. Kapangidwe ka dongosolo lophatikizana
Kawirikawiri amagwiritsidwa ntchito limodzi ndi mafuta a soya osungunuka (3-5 phr) ndi calcium stearate (0.5-1 phr) kuti awonjezere kuyenda kwa madzi ndikuchepetsa mphamvu ya torque.
2. Kulamulira kutentha panthawi yokonza
Ndikofunikira kukhazikitsa kutentha kwa extrusion m'magawo (160-185 ℃) kuti tipewe kuwonongeka kwa magulu a thiol chifukwa chopitirira 210 ℃.
3. Chithandizo choteteza chinyezi
Mukasunga, chinyezi cha chilengedwe chiyenera kusungidwa pansi pa 60%. Musanayambe kukonza, zinthu zopangira PVC ziyenera kuumitsidwa pa 80 ℃ kwa maola awiri kuti hydrolysis isagwire ntchito.
(Dziwani: Chogulitsachi ndi chamadzimadzi chokhuthala chopanda utoto ndipo chiyenera kusungidwa motsekedwa kutali ndi kuwala.)
Nthawi yotumizira: Meyi-19-2025
