ethula:
I-PVC (i-polyvinyl chloride) iyi-polymer evamile ye-thermoplastic esetshenziselwa kokubili izinjongo zezimboni nezasekhaya. Umthofu, insimbi enobuthi esindayo, isetshenziswe kuntambo ye-PVC iminyaka eminingi, kodwa imiphumela yayo emibi empilweni yabantu kanye nemvelo iholele ekwakhiweni kwezinye izindlela ze-PVC. Kulesi sihloko, sizoxoxa ngomehluko phakathi kwe-PVC ne-PVC engenamthofu.
Iyini i-PVC engenamthofu?
I-PVC engenamthofu iwuhlobo lwe-PVC olungaqukethe noma yimuphi umthofu. Ngenxa yokungabikho komthofu, i-PVC engenamthofu iphephile futhi inobungani bemvelo kune-PVC evamile. I-PVC engenamthofu ngokuvamile yenziwa nge-calcium, i-zinc noma iziqinisi zethini esikhundleni seziqinisi ezisekelwe kumthofu. Lezi zinzisi zinezakhiwo ezifanayo nezizinzisi zomthofu, kodwa ngaphandle kwemiphumela emibi empilweni nasemvelweni.
Umehluko phakathi kwe-PVC ne-PVC engaholeli
1. Ubuthi
Umehluko omkhulu phakathi kwe-PVC ne-PVC engenamthofu ukuba khona noma ukungabikho komthofu. Imikhiqizo ye-PVC ivame ukuqukatha izizinzisi zomthofu ezingaphuma kuzinto futhi zidale ukulimala kwemvelo. Umthofu uyinsimbi enobuthi enzima engabangela izinkinga zemizwa nentuthuko, ikakhulukazi ezinganeni. I-PVC engenamthofu isusa ubungozi bokwakheka komthofu.
2. Umthelela wendawo
I-PVC ayiboli futhi ingahlala emvelweni amakhulu eminyaka. Uma ishisiwe noma ilahlwa ngendlela engafanele, i-PVC ingakhulula amakhemikhali anobuthi emoyeni nasemanzini. I-PVC engenamthofu ihambisana kakhulu nemvelo ngoba ayinawo umthofu futhi ingagaywa kabusha.
3. Izimfanelo
I-PVC ne-PVC engenamthofu inezakhiwo ezifanayo, kodwa kunomehluko othile. Iziqinisi zokuhola zingathuthukisa izakhiwo ze-PVC ezifana nokuzinza kokushisa, isimo sezulu kanye nokuguquguquka. Kodwa-ke, i-PVC engenamthofu ingafinyelela izici ezifanayo ngokusebenzisa iziqinisi ezengeziwe ezifana ne-calcium, i-zinc ne-tin.
4. Izindleko
I-PVC engenamthofu ingase ibize ngaphezu kwe-PVC evamile ngenxa yokusetshenziswa kweziqinisi ezengeziwe. Nokho, umehluko wezindleko awubalulekile futhi izinzuzo zokusebenzisa i-PVC engenamthofu zidlula izindleko.
Isikhathi sokuthumela: Dec-31-2024