Isikhathi sokuqala ngqa i-PVC yatholwa ngengozi ngo-1872 ngusokhemisi waseJalimane, u-Eugen Baumann.Yakhiwe njengoba i-flask ye-vinyl chloride ishiywe ichayeke elangeni lapho yenza i-polymerized.
Ngasekupheleni kweminyaka yawo-1800 iqembu losomabhizinisi baseJalimane lanquma ukutshala imali kanye nokwenza amanani amakhulu e-Acetylene, esetshenziswa njengophethiloli ezibanini.Ngokuhambisana izixazululo zikagesi zaqala ukusebenza kahle futhi ngokushesha zadlula imakethe.Ngalokhu i-Acetylene ibitholakala ngobuningi futhi inezindleko eziphansi.
Ngo-1912 usokhemisi waseJalimane, uFritz Klatte, wahlola le nto futhi wayiphendula nge-hydrochloric acid (HCl).Lokhu kusabela kuzokhiqiza i-vinyl chloride futhi ingenayo injongo ecacile ayishiye eshalofini.I-vinyl chloride eyenziwe i-polymers ngokuhamba kwesikhathi, u-Klatte wayenenkampani ayeyisebenzela, i-Greisheim Electron, ukuze ibe yilungelo lobunikazi.Abatholanga ukusetshenziswa kwayo futhi ilungelo lobunikazi laphelelwa yisikhathi ngo-1925.
Ngokuzimela omunye usokhemisi eMelika, u-Waldo Semon osebenza kwa-BF Goodrich, wayethola i-PVC.Wabona ukuthi kungaba impahla ephelele yamakhethini okugeza futhi bafaka i-patent.Esinye sezici ezibalulekile kwaba ukuvinjelwa kwamanzi okuholele emacaleni amaningi okusetshenziswa futhi i-PVC yakhula ngokushesha ekwabelweni kwemakethe.
Iyini i-PVC granule futhi isetshenziswa kuphi?
I-PVC iyimpahla engasetshenziswa yodwa uma iqhathaniswa nezinye izinto zokusetshenziswa.Inhlanganisela ye-PVC granules isekelwe ekuhlanganiseni kwe-polymer kanye nezithasiselo ezinikeza ukwakheka okudingekayo ukuze kusetshenziswe ekugcineni.
Umhlangano ekurekhodweni ukugxila okungeziwe kusekelwe ezingxenyeni eziyikhulu ze-PVC resin (phr).I-compound ikhiqizwa ngokuxubana ngokuseduze ndawonye izithako, eziguqulwa zibe i-athikili ye-gelled ngaphansi kwethonya lokushisa (kanye ne-shear).
Izinhlanganisela ze-PVC zingakhiwa, kusetshenziswa ama-plasticizers, zibe izinto eziguquguqukayo, ngokuvamile ezibizwa nge-P-PVC.Izinhlobo ze-PVC ezithambile noma eziguquguqukayo zisetshenziswa kakhulu embonini yezicathulo, ikhebula, phansi, ipayipi, ithoyizi kanye nokwenza amagilavu.
Amakhompiyutha angenayo i-plasticizer yezicelo eziqinile aqokwa i-U-PVC.I-PVC eqinile isetshenziswa kakhulu kumapayipi, amaphrofayili ewindi, imbobo yodonga, njll.
Izinhlanganisela ze-PVC kulula ukusetshenzwa ngokubumba umjovo, ukukhishwa, ukubumba igalelo kanye nokudweba okujulile.I-INPVC yenze izinhlanganisela eziguquguqukayo ze-PVC ezinokugeleza okuphezulu kakhulu, ezilungele ukubumba umjovo, kanye namamaki abonakala kakhulu e-extrusion.
Isikhathi sokuthumela: Jun-21-2021
