Iyini indwangu engalukiwe?
Indwangu engalukiwe iwuhlobo olusha lwempahla ehambisana nemvelo. Ngokungafani nezindwangu zendabuko ezidinga izinqubo eziyinkimbinkimbi njengokuphotha nokweluka, iyi-fiber network material eyakhiwe ngokuxuba imicu noma izigcwalisi ngeglue noma imicu encibilikisiwe esimweni esincibilikisiwe kusetshenziswa ulwelwesi, anezikhala, noma izindlela ezizwakalayo. Izindwangu ezingalukiwe zinamandla aphezulu, ukuphefumula okuhle, ukumelana nokugqoka, ukuguquguquka okuhle, izakhiwo ezivikela amanzi kanye nomswakama, ngakho-ke zisetshenziswe kabanzi ekuphileni kwansuku zonke.
Siyini isimo sokucekelwa phansi kwendwangu engalukiwe?
Indwangu engalukiwe ihlukile kumapulasitiki abolayo ngoba yakhiwe ngemicu yokwenziwa, imicu yokhuni, imicu egaywe kabusha, nezinye izinto, futhi ayinakucekelwa phansi noma iboliswe amagciwane. Ngisho nasezindaweni zemvelo, izindwangu ezingalukiwe zithatha amashumi eminyaka, ngisho namakhulu eminyaka, ukubola. Uma inani elikhulu lendwangu engalukiwe lilahlwa emvelweni isikhathi eside, lizodala umonakalo omkhulu emvelweni.
Kodwa-ke, kukhona nezinye izinto zendwangu ezingalukiwe ezingaboli kahle ezitholakalayo manje, futhi ukuthi indwangu engalukiwe iyakwazi ukubola kuncike ekwakhekeni kwayo. Izindwangu ezingalukiwe ezenziwe nge-polylactic acid (PLA) nezinye izinto ezibolayo zingase ziwohloke, kuyilapho izindwangu ezingalukiwe ezenziwe ngezinto zepulasitiki zendabuko ezifana ne-polypropylene (PP) kanye ne-polyethylene (PE) azikwazi ukonakala.
Incazelo kanye nezinzuzo zezindwangu ezingalukiwe ezingaboli
Indwangu engalukiwe engaboli isho indwangu engalukiwe engaboliswa amagciwane, izilwane nezitshalo, i-hydrolysis noma i-photolysis ngaphansi kwezimo ezithile. Uma kuqhathaniswa nendwangu yepulasitiki engalukiwe yendabuko, inganciphisa ngempumelelo ukungcoliswa kwemvelo.
Emphakathini wanamuhla, ukuvikelwa kwendawo ezungezile sekuyinkinga yomhlaba wonke, futhi izindwangu ezingalukiwe ezingaboli zithandwa kakhulu ngenxa yezimpawu zazo zemvelo.
Izinhlobo nezici zezindwangu ezingalukiwe ezingaboli
Izindwangu ezingalukiwe ezisetshenziswa kakhulu ezingaboli okwamanje zihlanganisa lezi zinhlobo ezintathu ezilandelayo:
Indwangu engeyona elukiweyo esekwe isitashi
Indwangu engalukiwe esekelwe isitashi engaboli yindwangu engalukiwe ehambisana nemvelo ikakhulukazi eyakhiwe isitashi futhi yenziwe ngokungeza ama-plasticizers, ama-ejenti aqinisayo, izinto eziqinisayo, njll. Uma kuqhathaniswa nezindwangu zepulasitiki ezingezona ezilukiwe zendabuko, isitashi esisekelwe kwi-biodegradable non-elukiweyo izindwangu zinezakhiwo ezinhle kakhulu ze-antioxidant kanye ne-biodegradability enhle. Ukwengeza, indwangu engalukiwe esekelwe isitashi engaboli inezindleko eziphansi futhi iyindwangu engalukiwe evumelana nemvelo enezinga eliphezulu elingabizi kakhulu.
Indwangu engalukiwe ye-polylactic acid esekwe nge-biodegradable
Indwangu engalukiwe esekwe nge-polylactic acid iyindwangu engalukiwe evumelana nemvelo eyenziwe ikakhulukazi nge-polylactic acid kusetshenziswa izindlela zamakhemikhali e-polymer. Uma kuqhathaniswa nezindwangu zepulasitiki ezingezona ezilukiwe zendabuko, izindwangu ezingalukiwe ezisekelwe ku-polylactic acid zinokubola okuhle kwe-biodegradability kanye nokuzinza kwamakhemikhali. Ngaphezu kwalokho, i-polylactic acid esekelwe ku-biodegradable non-woven fabric yendwangu ingakwazi ukwehlisa ngempumelelo i-CO2 namanzi, ikhulule inani elikhulu lamandla okushisa, ikwenze kube indwangu ekahle engalukiwe ehambisana nemvelo.
Indwangu engalukiwe ye-cellulose engaboli
Indwangu engalukiwe esekelwe ku-Cellulose iyindwangu engalukiwe evumelana nemvelo ikakhulukazi eyakhiwe nge-cellulose futhi yenziwa ngokwengeza izinto eziqinisayo nezinto zokwakha. Uma kuqhathaniswa nezindwangu zepulasitiki ezingalukiwe zendabuko, izindwangu ezingalukiwe ezisekelwe ku-cellulose zinokubola okuhle kanye nezakhiwo ezibonakalayo. Ngaphezu kwalokho, indwangu engalukiwe esekelwe ku-cellulose engaboli futhi inokudonsa kahle umoya nokumunca umswakama, okuyenza ibe yindwangu engalukiwe evumelana nemvelo.
Isiphetho
Indwangu engalukiwe yona ngokwayo iwonakala kancane, kodwa kukhona nezinto zendwangu ezingalukiwe ezibolayo ezitholakalayo manje. Ngezinto zendwangu ezingezona ezilukiwe ezingakwazi ukucekelwa phansi ngokushesha, izindlela eziphephile nezihambisana nemvelo kufanele zamukelwe ukuze kuncishiswe umthelela wazo emvelweni. Ngezinto zendwangu ezingalukiwe ezingaboli, kufanele kwandiswe ukukhushulwa nokuphushwa. Yenza abantu abaningi bazi ngomthelela wezindwangu ezingalukiwe, uvikele ngokuhlanganyela indawo yethu ezungezile, futhi uzuze intuthuko esimeme.
Isikhathi sokuthumela: Sep-03-2024