I-PVC Stabilizers yesikhathi esedlule, samanje, nesakusasa

Lapho kutholwa izithasiselo zamakhemikhali ezinganciphisa ukulahleka kwamakhemikhali kanye nezakhiwo ezibonakalayo ze-polymer-esingathwayo kodwa eshisayo{1}}ezwelayo ebizwa nge-poly(vinyl chloride) (PVC), kwasungulwa imboni. Futhi ngayo kwakhula umhlaba wezithasiselo zepulasitiki. Iziqinisi ze-PVC zaba kanye nezimboni ngokwayo, zingena futhi ziphuma kulo mkhakha we-polymer oguquguqukayo, ngobudlelwane obucishe bube yi-symbiotic. Kube nezinhlobo eziningi zeziqinisi ezisetshenziswayo phakathi neminyaka engamashumi amahlanu edlule: i-inorganics, lead, organics, i-barium/cadmiums, i-calcium/zincs, i-organotins, ne-antimony. Futhi abaningi kakhulu selokhu baqanjwa kodwa hhayi commercial: organoleads, organoantimonys, bismuths, indiums, futhi inqwaba amakhemikhali eziphilayo. Yiziphi ukufaneleka kanye nokushoda kwalezi ziqinisi? Kuthiwani ngemikhiqizo yayizolo esisenayo? Yiziphi izinhlobo ezintsha? Yini engase ibe imikhiqizo yakusasa? Leli phepha lizozama ukubukeza futhi lidingide okwedlule, okwamanje, nekusasa lezinzinzisi ze-PVC; izici ezibhekele ukuhlukahluka kwazo, zibe nomthelela ocwaningweni, ekuthuthukisweni nasekuhwebeni kwazo, kanye nokuthi lezi zici zishintsha kanjani ngokuhamba kwesikhathi.