dziwitsani:
PVC (polyvinyl chloride) ndi polima wamba wa thermoplastic omwe amagwiritsidwa ntchito pazinthu zamakampani komanso zapakhomo. Mtsogoleri, chitsulo choopsa kwambiri, chakhala chikugwiritsidwa ntchito mu ulusi wa PVC kwa zaka zambiri, koma zotsatira zake zoipa pa thanzi laumunthu ndi chilengedwe zapangitsa kuti pakhale njira zina za PVC. M'nkhaniyi, tikambirana kusiyana pakati pa PVC ndi PVC yopanda kutsogolera.
Kodi PVC Yopanda Lead ndi chiyani?
PVC yopanda kutsogolera ndi mtundu wa PVC womwe ulibe lead. Chifukwa chakusowa kwa lead, PVC yopanda kutsogolera ndi yotetezeka komanso yosamalira zachilengedwe kuposa PVC yachikhalidwe. PVC yopanda lead nthawi zambiri imapangidwa ndi calcium, zinki kapena malata okhazikika m'malo mwa zowongolera zokhala ndi lead. Ma stabilizers ali ndi zinthu zofanana ndi zowongolera zowongolera, koma popanda zotsatirapo zoyipa pa thanzi ndi chilengedwe.
Kusiyana pakati pa PVC ndi PVC wopanda lead
1. Poizoni
Kusiyana kwakukulu pakati pa PVC ndi PVC yopanda lead ndi kupezeka kapena kusapezeka kwa lead. Zogulitsa za PVC nthawi zambiri zimakhala ndi zowongolera zotsogola zomwe zimatha kutulutsa zinthu ndikuwononga chilengedwe. Mthovu ndi chitsulo chowopsa chomwe chingayambitse vuto la minyewa ndi chitukuko, makamaka mwa ana. PVC yopanda kutsogolera imachotsa chiwopsezo chopanga kutsogolera.
2. Kukhudza chilengedwe
PVC sichitha kuwonongeka ndipo imatha kukhala m'chilengedwe kwa zaka mazana ambiri. Ikatenthedwa kapena kutayidwa molakwika, PVC imatha kutulutsa mankhwala oopsa mumpweya ndi m'madzi. PVC yopanda lead ndiyotetezeka ku chilengedwe chifukwa ilibe lead ndipo imatha kusinthidwanso.
3. Makhalidwe
PVC ndi PVC yopanda kutsogolera zili ndi zinthu zofanana, koma pali zosiyana. Ma lead stabilizer amatha kupititsa patsogolo zinthu za PVC monga kukhazikika kwamafuta, kusinthasintha kwanyengo komanso kusinthasintha. Komabe, PVC yopanda kutsogolera imatha kupeza zinthu zofanana pogwiritsa ntchito zowonjezera zowonjezera monga calcium, zinki ndi tini.
4. Mtengo
PVC yopanda kutsogolera ikhoza kuwononga ndalama zambiri kuposa PVC wamba chifukwa chogwiritsa ntchito zowonjezera zowonjezera. Komabe, kusiyana kwa mtengo sikofunikira ndipo phindu la kugwiritsa ntchito PVC yopanda lead limaposa mtengo wake.
Nthawi yotumiza: Dec-31-2024