Njengoba kugxilwe kakhulu ezixazululweni eziqhubekayo eminyakeni yamuva nje, sibona isidingo esikhulayo sezakhiwo eziqhubekayo kanye nezinhlelo ezisekelwe emanzini, ngokungafani nezinhlelo ezisekelwe emanzini. Ukwelapha nge-UV ubuchwepheshe obusebenzisa kahle imithombo obuthuthukiswe emashumini eminyaka edlule. Ngokuhlanganisa izinzuzo zokwelapha nge-UV okusheshayo, okusezingeni eliphezulu kanye nobuchwepheshe bezinhlelo ezisekelwe emanzini, kungenzeka ukuthola okungcono kakhulu emhlabeni ozinzile.
Ukugxila okukhulu kwezobuchwepheshe entuthukweni esimeme
Intuthuko engakaze ibonwe yobhubhane phakathi no-2020, eshintshe kakhulu indlela esiphila futhi senza ngayo ibhizinisi, nayo ibe nomthelela ekugxileni ekunikezelweni okusimeme embonini yamakhemikhali. Izibopho ezintsha zenziwa emazingeni aphezulu ezepolitiki emazwenikazi amaningana, amabhizinisi aphoqeleka ukuthi abukeze amasu awo futhi izibopho zokusimeme zihlolisiswa kuze kube semininingwaneni. Futhi kusemininingwaneni izixazululo ezingatholakala zokuthi ubuchwepheshe bungasiza kanjani ekugcwaliseni izidingo zabantu namabhizinisi ngendlela esimeme. Indlela ubuchwepheshe obungasetshenziswa futhi buhlanganiswe ngayo ngezindlela ezintsha, isibonelo inhlanganisela yobuchwepheshe be-UV nezinhlelo ezisekelwe emanzini.
Ubuchwepheshe bokuphulukisa i-UV busebenza kahle emvelweni
Ubuchwepheshe bokuphilisa nge-UV basungulwa kakade ngawo-1960 kusetshenziswa amakhemikhali angagcwali ukuze aphulukiswe ngokukhanya kwe-UV noma i-Electron Beams (EB). Okubizwa ngokuthi ukuphilisa ngemisebe, inzuzo enkulu kwakuwukuphilisa okusheshayo kanye nezakhiwo ezinhle kakhulu zokumboza. Phakathi nawo-1980 ubuchwepheshe bathuthuka futhi baqala ukusetshenziswa ngezinga lezentengiselwano. Njengoba ukuqwashisa ngomphumela wezinyibilikisi emvelweni kwanda, kwanda nokuthandwa kokuphilisa ngemisebe njengendlela yokunciphisa inani lezinyibilikisi ezisetshenziswayo. Lo mkhuba awuzange wehle futhi ukwanda kokwamukelwa kanye nohlobo lwezicelo kuye kwaqhubeka kusukela lapho, kanye nesidingo kokubili maqondana nokusebenza kanye nokusimama.
Ukusuka ezincibilikisini
Nakuba ukwelapha nge-UV ngokwakho sekuwubuchwepheshe obuzinzile kakhulu, ezinye izinhlelo zokusebenza zisadinga ukusetshenziswa kwezithako zemvelo noma ama-monomer (enengozi yokufuduka) ukuze kwehliswe i-viscosity ukuze kutholakale umphumela owanelisayo lapho kufakwa i-coating noma i-inki. Muva nje, kwavela umqondo wokuhlanganisa ubuchwepheshe be-UV nobunye ubuchwepheshe obuzinzile: izinhlelo ezisekelwe emanzini. Lezi zinhlelo ngokuvamile ziwuhlobo oluncibilikayo emanzini (kungaba ngokuhlukaniswa kwe-ionic noma ukuhambisana okuxubile namanzi) noma uhlobo lwe-PUD (polyurethane dispersion) lapho amaconsi esigaba esingaxubile ehlakazeka emanzini ngokusebenzisa i-ejenti yokuhlakaza.
Ngale kokumbozwa kokhuni
Ekuqaleni izembozo ze-UV ezitholakala emanzini ziye zasetshenziswa kakhulu embonini yezembozo zokhuni. Lapha kwakulula ukubona izinzuzo zokuhlanganisa izinzuzo ezivela esilinganisweni esiphezulu sokukhiqiza (uma kuqhathaniswa ne-non-UV) kanye nokumelana okuphezulu kwamakhemikhali ne-VOC ephansi. Izakhiwo ezibalulekile ekumbozweni phansi kanye nefenisha. Kodwa-ke, muva nje ezinye izinhlelo zokusebenza seziqalile ukuthola amandla e-UV esuselwa emanzini. Ukuphrinta kwedijithali kwe-UV esuselwa emanzini (uyinki we-inkjet) kungazuza ezinzuzweni zombili ezisekelwe emanzini (i-viscosity ephansi kanye ne-VOC ephansi) kanye noyinki we-UV ophilisayo (ukwelashwa okusheshayo, ukulungiswa okuhle kanye nokumelana kwamakhemikhali). Intuthuko iyaqhubeka ngokushesha futhi kungenzeka ukuthi izinhlelo zokusebenza eziningi zizohlola maduze amathuba okusebenzisa i-UV esuselwa emanzini.
Ingabe kukhona upende lwe-UV olusekelwe emanzini yonke indawo?
Sonke siyazi ukuthi iplanethi yethu ibhekene nezinselele ezithile ezizayo. Njengoba inani labantu likhula kanye nezindinganiso zokuphila ezandayo, ukusetshenziswa kanye nokuphathwa kwezinsiza kuba yinto ebaluleke kakhulu kunanini ngaphambili. Ukwelashwa kwe-UV ngeke kube yimpendulo yazo zonke lezi zinselele kodwa kungaba yingxenye eyodwa yephazili njengobuchwepheshe obusebenzisa amandla kanye nezinsizakusebenza kahle. Ubuchwepheshe bendabuko obuthwala izinyibilikisi budinga izinhlelo zamandla aphezulu ukuze zome, kanye nokukhishwa kwe-VOC. Ukwelashwa kwe-UV kungenziwa ngokusebenzisa izibani ze-LED ezinamandla aphansi zama-inki kanye nezimbozo ezingenazo izinyibilikisi noma, njengoba sifundile kulesi sihloko, kusetshenziswa amanzi kuphela njengesinyibilikisi. Ukukhetha ubuchwepheshe obuzinzile kanye nezinye izindlela kukuvumela ukuthi ungagcini nje ngokuvikela iphansi lakho lasekhishini noma ishalofu lezincwadi ngembozo esebenza kahle kakhulu, kodwa futhi uvikele futhi uqaphele izinsizakusebenza ezilinganiselwe zeplanethi yethu.
Isikhathi sokuthunyelwe: Meyi-24-2024
