I-PVC nokusimama

I-PVC ibilokhu ihlaselwa kanzima futhi enonya iminyaka eminingana, ikakhulukazi ngenxa yokuhlotshaniswa kwayo ne-chlorine chemistry.Abanye baye baphikisa ngokuthi ngenxa yalokhu kuhlotshaniswa ngokwemvelo akunasimeme, nakuba okuningi kwalokhu kungqubuzana kuye kwashukunyiswa ngokomzwelo kunokuba kusekelwe ekucubunguleni kwesayensi.Nokho ukuba khona kwe-chlorine kunikeza uhla lwezici zobuchwepheshe ezihlukile ku-PVC eziyenza ihluke kwamanye ama-polymer amaningi.Eziningi zalezi zici zaziwa kakhulu futhi zibhaliwe, futhi mhlawumbe lokhu kuhluka kwenza kube i-polymer ethakazelisayo ukutadisha mayelana namandla ayo okusimama.Ihlala isikhathi eside ekusebenziseni futhi kunzima ukuyidiliza.Lokhu kubelesela kwenze kwaba okuhlosiwe ngabanye abakhankasi, nokho lokhu kungase kube ngenye yamandla ako amakhulu ngokombono wokusimama.Umbiko olandelayo uhlola—ngokwesisekelo sesayensi—ukuthi kusho ukuthini ukusimama embonini ye-PVC kanye nezinyathelo ezidingekayo ezingadingeka ukuze kuthunyelwe i-polymer esimeme ngempela.Imodeli yokuhlola eyethulwe isuselwe ohlakeni lwe-The Natural Step (TNS).Uhlaka lwe-TNS luyisethi yamathuluzi aqinile nasekelwe kwisayensi echaza ukusimama ngamagama acacile nasebenzayo futhi lusiza izinhlangano ukuthi zihlanganyele nezinto eziwusizo zentuthuko esimeme.Ikakhulukazi, ucwaningo luhlanganisa umlando wecala lenqubo yentuthuko esimeme eholela kulokhu kuhlola okubandakanya inani labathengisi abahamba phambili base-UK.