Ukuzuza ukunamathela okuqinile nokunokwethenjelwa phakathi kwezinto ezihlukahlukene kuseyinkinga eqhubekayo emkhakheni wobunjiniyela obuyinhlanganisela nokukhiqizwa kwepulasitiki. Ngenxa yamandla aphansi angaphezulu, amapulasitiki amaningi-asebenza kahle aphezulu-abhekwa njengenani ngenxa yokuqina kwawo kanye nokumelana namakhemikhali{3}}ayi-hydrophobic futhi ayinselele kwi-bond, print, noma ijazi. I-Delamination, incazelo engalungile yokuphrinta, kanye nokuncipha kobuqotho besakhiwo kumihlangano eqediwe ezinye zezinkinga ezingase zibe umphumela walo mkhawulo oyisisekelo. Imboni isebenzise-izindlela zokuguqula indawo esemaphethelweni ukuze inqande lesi sithiyo. Phakathi kwalokhu, ukwelashwa kokukhishwa kwe-corona sekuphenduke ubuchwepheshe obuyinhloko bokuthuthukisa amandla okuhlanganisa izinhlanganisela zepulasitiki, ukuhlinzeka ngesixazululo esinokwehla, esisebenzayo, futhi{8}}nobungani bemvelo.
Isayensi Yokwelashwa KweCorona YepulasitikiUhlobo lokwelashwa kwe-plasma yasemkhathini olubizwa ngokuthi i-corona treatment lusebenza ngokudala ukuphuma kukagesi-okunamandla kagesi aphezulu ku-electrode kanye ne-ground roll edlula i-plastic substrate. Ngaphandle kokushintsha izici zenqwaba yokokusebenza, le nqubo ishintsha ngokuphawulekayo indawo yokokusebenza ezingeni le-microscopic. Umoya ozungezile u-ionized ngokuphuma, ukhiqiza i-plasma equkethe ama-radicals mahhala, ama-ion, nama-electron anamandla. Lapho le plasma ingena endaweni yepulasitiki, iphula izibopho zamangqamuzana futhi yengeze amaqembu asebenza endaweni epholile, ngokuyinhloko i-carbonyl, i-hydroxyl, namaqembu e-carboxyl. Ukusebenza kobuchwepheshe kuncike kule nqubo ye-oxidation. Ukwelashwa kwe-Corona kuguqula indawo eyodwa-engagxili,{7}}enganamatheli ibe ngesabela ngokwedlulele ngokuphakamisa i-polarity kanye namandla. Ukumanzisa kwanda kakhulu ngezingosi ezisebenzayo ezidalwe amaqembu asanda kukhiqizwa e-polar. Ngenxa yalokho, okokunamathela, ama-laminates, okunamathelayo, noyinki kungasakazeka ngokulinganayo futhi kudale izibopho eziqinile zamakhemikhali nezomzimba nge-substrate yepulasitiki. Uxhumo oluhle olubonakalayo lutholwe ekuqinisekisweni kwenani lobudlelwano phakathi kokuqukethwe kweqembu okuthuthukisiwe okusebenzayo endaweni ephathwayo namandla okubopha angumphumela.
Izinzuzo Eziyinhloko Zezicelo Ezihlanganisiwe ZepulasitikiUkusetshenziswa kokwelashwa kwe-corona kunikeza izinzuzo ezibonakalayo, ezihlukahlukene ezixazulula izinkinga ezinkulu zokukhiqiza. Ukuthuthukiswa okukhulu kwamandla ebhondi kuyinzuzo enkulu. Ukwelashwa kwe-Corona kuqinisekisa isixhumi esibonakalayo esithembekile sezinto eziyinhlanganisela, ezivimbela ukuhlukaniswa kwezingqimba futhi andise ubude besikhathi sokuphila komkhiqizo lapho amapulasitiki eboshelwe kwamanye ama-polymer, izinsimbi, noma izindwangu. Izicelo ezisukela ezingxenyeni zemoto zesakhiwo kuya kuma-laminates aguquguqukayo wokupakisha zincike kulokhu. Indawo ephathwayo inika amandla ukufana kwe-coating ephakeme, imibala egqamile, kanye nezithombe ezicwebezelayo ekuphrinteni nasekuhlanganiseni. Cishe isuse ngokuphelele amaphutha ajwayelekile okuhlanganisa ukuphina, ukuvala i-coating delamination, nokukhasa kukayinki, okwehlisa udoti wezinto ezibonakalayo kanye nezindleko zokuphinda zicutshungulwe. Ukusebenzisa ama-coatings asebenzayo anikezela ngezithiyo ngokumelene nomoya-mpilo, umswakama, noma izimfanelo ezithile zikagesi kudinga ukusebenza okuhlala njalo kwendawo yamapulastiki asetshenziswa ekupakheni kokudla noma ezintweni zikagesi. Izinqubo zokukhiqiza ezisemgqeni ezifana ne-film extrusion, ukuphrinta, noma imigqa yokubeka kalula ingahlanganisa kalula abelaphi be-corona besimanje. Lokhu kuqeda isidingo seqoqo elihlukile{8}}lokucutshungulwa kwesigaba futhi kuvumela ukuqhubeka,{9}}ekulungiseni{10}}kokundiza, okuqinisekisa ikhwalithi engaguquki. Ama-thermoplastics amaningi, njenge-polyester, i-polycarbonate, i-polyolefins (i-polyethylene, i-polypropylene), ne-nylon, ingasetshenziswa ngale ndlela.
Izicelo Zezimboni Nezinto Zokusebenza-Imiphumela EthizeUkwelashwa kweCorona kuyasiza ezimbonini ezahlukahlukene lapho izinhlanganisela zepulasitiki zibalulekile. Emkhakheni wokupakisha, lolu uhlelo lokusebenza oludume kakhulu. Ukuqinisekisa ubuqotho bokupakishwa, ukukhanga kobuhle, nokusebenza kwesithiyo, amafilimu e-polyolefin (afana ne-PE ne-PP) ngokuvamile aphathwa nge-aluminium noma amanye ama-polymer ngaphambi kokuphrinta noma ukulahlwa. Ezimotweni nasemkhathini, ukunamathelana okuhle kakhulu kobuso kuyadingeka ezinkombeni ezingasindi, ezivame ukufaka ama-fiber{3}}ama-polymers aqinisiwe. Lapho izingxenye ezakhiwe ngezinto ezifana nezinhlanganisela ze-polypropylene ziphathwa nge-corona, amandla okubopha ayaqiniswa ukuze kupendwe kamuva, kuhlanganiswe, noma kuhlanganiswe nezinye izinto. Ezindwangu kanye nama-nonwovens, i-polyester ne-polypropylene yizibonelo zezindwangu zokwenziwa ezinama-hydrophobic futhi eziyinselele ukuqeda noma ukudaya. Ukunamathela kokusebenza okunamathelayo noma ama-laminates, ukushesha kombala, nokuthathwa kukadayi konke kuthuthukiswa ngokuphathwa kwe-corona yezindwangu noma okungalukiwe. Kuma-electronics, ukuze kuqinisekiswe ukunamathela okuphelele kwamaphrinti wesekethe, okokuvikela okuhambisanayo, namalebula, izingxenye ezinembayo ezakhiwe ngamapholymer obunjiniyela njenge-PET noma i-PC zingaphansi kokwelashwa kwe-corona. Emafayibha aphezulu-okusebenza, ukwelashwa kwe-corona kuyisinyathelo esibalulekile ekulungiseni ikhemistri yezinto zesimanje, njengamafilimu e-polyimide noma ama-poly(p{10}}phenylene benzobisoxazole) (PBO) fibers, ukunika amandla ukunamathela okuqinile kuma-resin kuzakhiwo ezihlanganisiwe{11}}ezinamandla aphezulu. Ukwelashwa kwe-Corona kwezakhi kungathinta ngisho nokucutshungulwa kwezinhlanganisela ze-wood fiber/polyethylene, kunciphise i-viscosity encibilikayo futhi mhlawumbe kuthuthukise ukucutshungulwa, ngokusho kocwaningo.
Ukusebenzisa kanye Nemikhuba Emihle KakhuluUkuhlela ngokucophelela kuyadingeka ukuze ukwelashwa kwe-corona kwenziwe ngempumelelo. Ukufanisa impahla ethile yepulasitiki nomphumela ohlosiwe, imibandela ebalulekile ihlanganisa ukukhetha ukuminyana kwamandla okulungile, ukuhlelwa kwe-electrode, nesivinini sokwelashwa. Ngaphambi -kokusetshenziswa kwesikali esigcwele, kuyalulekwa ngokuqinile ukuthi uqinisekise izilungiselelo zokwelapha ngokuqalisa ukuhlolwa kusetshenziswa amasampula okukhiqiza. Ukwengeza, ukugcina izinto zokusebenza-ukugcina ama-electrode ehlanzekile nokuqinisekisa ukuphuma kwamandla angashintshi{5}}kubalulekile ukuze uthole imiphumela ethembekile, ekwazi ukukhiqizwa kabusha. Ukwandisa ukusebenza kahle kwesistimu nesikhathi, opharetha kufanele bathole ukuqeqeshwa ngokusetha okulungile, izinqubo zokuphepha, kanye nokuxazulula inkinga okuyisisekelo.
IsiphethoUkuze kuthuthukiswe ukusebenza kwezinhlanganisela zepulasitiki, ukwelashwa kokukhishwa kwe-corona kuwubuchwepheshe obuzanyiwe{0}futhi{1}}nobuyiqiniso, obusebenzayo, nobubalulekile. Amandla okuxhumana aphakeme, ikhwalithi engcono yokuphrinta neyokunamathela, kanye nokwethenjelwa okwengeziwe komkhiqizo kuzo zonke izimboni eziningi konke kwenziwa kwaba nokwenzeka ngokuqonda ikhemistri engaphezulu yamapulasitiki. Ukubaluleka kokwelashwa kwe-corona ekuqinisekiseni ubuqotho besakhiwo kanye nempumelelo yokusebenza okuphezulu-kokusebenza,{5}}izinhlanganisela zezinto ezibonakalayo kuzokwanda kuphela njengoba isidingo salezi zinto sikhuphuka. Ukuhlanganisa lobu buchwepheshe bokwenza kusebenze okungaphezulu kuyisinyathelo esibalulekile esibheke kwikhwalithi kanye nokuqanjwa okusha konjiniyela nabakhiqizi abafuna ukuphusha imikhawulo yalokho okungafezwa yizinhlanganisela zepulasitiki.