Isingeniso: Inqubo yokukhiqiza yeImikhiqizo yepulasitikiNgokuyinhloko kufaka phakathi izinqubo ezibalulekile ezine: Ukubumba ukwakha, ukwelashwa komhlaba, ukuphrinta kanye nomhlangano. Ukwelashwa komhlaba kuyingxenye ebalulekile ebalulekile. Ukuze uthuthukise amandla eBonding of Coating futhi unikeze isisekelo esihle sokuqhuma kweplati, inqubo yangaphambi kokwelashwa ayibalulekile.
Ukuhlehlisa komhlaba kwemikhiqizo yepulasitiki
Ikakhulukazi kufaka phakathi ukwelashwa okuhlanganisiwe nokwelashwa kwamapuleti. Ngokuvamile, amapulasitiki anezinga elikhulu le-crystallity, ubumbano obuncane noma abukho ama-polarity, namandla aphansi, okuzothinta ukunamathela kokunamathela. Njengoba ipulasitiki ingumfaki ongeyena ophangayo, ayikwazi ukufakwa ngokuqondile endaweni yepulasitiki ngokuya nge-Genel Electroplating Process Procepectification. Ngakho-ke, ngaphambi kokwelashwa komhlaba, ukwenziwa okudingekayo kufanele kwenziwe ukuze kuthuthukiswe amandla okubopha ama-coating futhi kunikeze ungqimba olungezansi olusezandleni olunamandla amahle okuqinisa amandla.
Ukwehlisa ukunamathela
Ukuhlekisa kufaka ukonakala komugqa wepulasitiki, okusho ukuhlanza i-oyili kanye nokukhipha i-ejenti ebusweni, futhi kusebenze indawo yepulasitiki, ukuze kuthuthukiswe ukunamathela kwe-coating.
1, ukugcona
Ukuchithwa kweImikhiqizo yepulasitiki. Ifana ne-Degreased yemikhiqizo yensimbi, ukucwilisa imikhiqizo yepulasitiki kungenziwa ngokuhlanza nge-organic solvents noma ukuhlekisa ngezixazululo ze-alkali enamanzi aqukethe ama-supfactants. Ukuchitheka nge-organic solvents kufanelekile ekuhlanzeni uphalafini, i-beewax, amanoni nokunye ukungcola okungokomzimba kusuka endaweni yepulasitiki. I-organic solvent esetshenzisiwe akufanele ichithe, ivuvukale noma iqhekeke ipulasitiki, futhi inendawo ephansi evuthayo, i-shiotile, i-non-tocic futhi ayivuli. I-Alkaline Aquous Solutions ilungele amapulasitiki alwa ne-alkali anciphisa. Isixazululo siqukethe i-caustic soda, usawoti we-alkaline kanye nama-surfficants ahlukahlukene. I-Surkfactant esetshenziswa kakhulu yi-OP Series, ie i-alkylphenol polyoxyethyleneylene ether, engakhi amandla futhi ayihlali endaweni yepulasitiki.
2, Ukusebenza Okungaphezulu Kwaphezulu
Lokhu kusebenze ukuthuthukisa izakhiwo ezingaphezulu kwamapulasitiki, okungukuthi, ukukhiqiza amanye amaqembu ama-polar endaweni yepulasitiki noma ukuwagaya ukuze ukunamathela kungashaywa kalula futhi kufakwe ama-capidbed ebusweni bomsebenzi. Kunezindlela eziningi zokwelashwa kokusebenza komhlaba, njenge-oxidation yamakhemikhali, i-flame oxidation, solvent vapor etching kanye ne-corona deching kanye no-oxidation. I-Onid esetshenziswa kakhulu yi-Chemical Crystal Oxidation Treatment, okuvame ukusebenzisa i-chromic acid yokwelashwa, futhi ifomula yayo ejwayelekile i-potassium dichromate, 8.0% amanzi, kanye nama-87,5% agxile ku-sulfuric acid (ama-96%).
Eminye imikhiqizo yepulasitiki, efana ne-polystyrere futhi i-abs plastics, ingahlanganiswa ngqo ngaphandle kokwelashwa koximali yamakhemikhali. Ukuze kusetshenziswe i-coating esezingeni eliphakeme, ukwelashwa koxidation chemical nakho kuyasetshenziswa. Isibonelo, ngemuva kokuncipha, ipulasitiki ye-ABS ifakwe ngoketshezi lwe-Chromic Acid Chromic acid. Ifomula yayo evamile yokwelashwa yi-420g / l chromic acid kanye ne-200ml / l sulfuric acid (ama-gravity athile adonsela phansi 1.83). Inqubo ejwayelekile yokwelashwa ingu-65 ℃ 700 ℃ / 5min10min, amanzi okugeza, nowokumiswa. Inzuzo ye-Etching nge-chromic acid yokwelashwa uketshezi ukuthi noma ngabe ukwakheka kwepulasitiki kuyinkimbinkimbi kangakanani, kungaphathwa ngokulinganayo. Okubi ukuthi ukusebenza kuyingozi futhi kunezinkinga zokungcola.
Ukwehlisa ukuhlanganiswa kwe-coating
Inhloso yokuhlekisa kwe-coating coati ukuthuthukisa ukunamathela kokuhlanganiswa kwepulasitiki futhi kwakha isendlalelo sensimbi esisezingeni eliphansi endaweni yepulasitiki. Inqubo yokuhlekisa ngokuyinhloko ifaka phakathi: Ukuncintisana kwemishini, ukugcotshwa kwamakhemikhali, ukuqina kwamakhemikhali, ukwelashwa kokuzwela, ukwelashwa kokwenza kusebenze, ukwelashwa kokunciphisa kanye nokunciphisa kanye neplifiti yokunciphisa kanye neplifiti yekhemikhali. Izinto ezintathu zokuqala ukuthuthukisa ukunamathela kokuhlanganiswa, kanye nezinto ezine zokugcina ukwakha ungqimba lwensimbi olungaphansi.
1, ukuncintisana kwemishini kanye nokuqina kwamakhemikhali
Imishini yokuncintisana kanye nokwelashwa kwamakhemikhali ukuncintisana kufanele enze indawo yepulasitiki ihluleke ngezindlela zemishini kanye nezindlela zamakhemikhali ngokulandelana ukukhulisa indawo yokuxhumana phakathi kwenhlanganisela kanye ne-substrate. Ngokuvamile kuzwakala ukuthi amandla abugqilayo angatholakala ngokulahla kwemishini kungamaphesenti ayi-10 kuphela awo wokulwa namakhemikhali.
2, Ukuhlanza Kwamakhemikhali
Indlela eyehlazo yokuhlekisa kokuhlekisa kwepulasitiki coating iyafana nendlela eyehlazo yokuhlehlisa ukunamathela.
3, ukuzwela
Ukuzwakala ku-adderb ezinye izinto ezihlanganisiwe kalula, njenge-tin dichloride, titanium trichloride, njll. Lezi zinto ezi-adsorbed kalula zingama-oxidized ngesikhathi sokwelashwa ngokwenza kusebenze, futhi i-activator incishiswa ku-catalytic crystal nuclei futhi ihlala ebusweni bomkhiqizo. Indima yokuzwakala kokuzwakala ukubeka isisekelo sesendlalelo sensimbi elandelayo yamakhemikhali.
4, kusebenze
I-activation ukwelapha indawo ebekiwe ngosizo lwekhambi lezinhlanganisela zensimbi ezisebenzayo. Umnyombo wayo ukucwilisa umkhiqizo ama-adderbed nge-ejenti evuselelayo esikhaleni esinamanzi aqukethe i-oxidant yosawoti wensimbi oyigugu, ukuze insimbi eyigugu yensimbi incishiswe yi-s2 + n njengensimbi eyigugu ebekwe ku Ingaphezulu lomkhiqizo ngohlobo lwezinhlayiya ze-colloidal, ezinomsebenzi oqinile we-catalytic. Lapho lo ndawo ecwiliswe esikhandlani samakhemikhali e-planing, lezi zinhlayiya ziba izikhungo ze-catalytic, ezisheshisa nezinga lokuphendula lokuphendula kwamakhemikhali.
5, ukwelashwa kokunciphisa
Ngaphambi kokufakwa kwamakhemikhali, imikhiqizo eye yasebenza futhi igezwe ngamanzi ahlanzekile igxile ekuqoqweni okuthile kokunciphisa ukunciphisa isixazululo se-ejenti esetshenziswa ekunciphiseni nasekususeni i-activator engashintshiwe. Lokhu kubizwa ngokuthi ukwelashwa kokunciphisa. Lapho ithusi lamakhemikhali lisetshenziselwa i-plated, isixazululo se-formaldehyde sisetshenziselwa ukwelashwa kokuncipha, futhi lapho amakhemikhali i-nickel esetshenziselwa ukwelashwa kokunciphisa.
6, Amakhemikhali Amakhemikhali
Inhloso yokuqongelela amakhemikhali ukwakha ifilimu yensimbi esebenzayo ebusweni bemikhiqizo yepulasitiki ukudala izimo ze-electroplating the waleya yensimbi yemikhiqizo yepulasitiki. Ngakho-ke, i-chemical planing isinyathelo esingukhiye nge-electropulasical electropulating.
Isikhathi sePosi: Jun-13-2024