Okokuqala, umbala omnyama we-carbon
Izinga lokuhlakazeka kokukhanya "kwezinhlayiya ezimnyama zekhabhoni" liyancipha ngokuncipha kosayizi wezinhlayiyana, okungathinti kuphela umphumela wokukhanya kodwa futhi nethoni. Nasi isizathu: Uma ukukhanya kudlula isendlalelo sombala obuswa ukukhanya okuluhlaza okwesibhakabhaka kwe-wavelength emfushane kuhlakaza ngamandla kunokukhanya okubomvu kwamaza amade. Uma ikhabhoni emnyama incipha, umphumela uba mkhulu kakhulu. Ngenxa yokulahlekelwa okuncane kokuhlakazeka, ingxenye ebomvu ingena ekujuleni kwesendlalelo sombala, kuyilapho ukuhlakazeka okuphelele kokukhanya okuluhlaza okwesibhakabhaka kunamandla kunokukhanya kwembali, futhi kunamandla ngakolunye uhlangothi, okungukuthi ukuhlakazeka kwangemuva, ngakho-ke. kubonakala kusukela ungqimba Umbala. Lapho ubheka inqubo yokubonisa, kuvela umbala oluhlaza okwesibhakabhaka uma ufakwe umbala ocolekile wekhabhoni, okunikeza umbono wokuba mnyama kakhulu. Kodwa uma i-carbon black inkulu, iveza umbala onsundu ngokufanayo, lapho ubheka inqubo yokudlulisela, ungqimba olufanayo lombala (hhayi ifilimu ebonisa ngale ngokuphelele) ubuhlobo bethoni kunalokho, nokuncipha kokusabalalisa usayizi wezinhlayiyana, ukuhlakazeka okunamandla kokukhanya okuluhlaza okwesibhakabhaka. ukujula kongqimba lombala kuncane, ukukhanya okuluhlaza okwesibhakabhaka ngesendlalelo sombala kuya kolunye uhlangothi ingxenye kuncane, kuyaguga ukusuka kolunye uhlangothi. Ngakho, ngenxa yokuntuleka kokukhanya okuluhlaza okwesibhakabhaka ohlangothini olubhekiwe, ungqimba olunemibala luthatha umbala onsundu lapho lubukwa ngesikhathi sokudlulisela. Lapho umlotha (umbala ompunga) kukhiye we-titanium pigment, futhi ubheka ukufiphala kombala oyinhloko ngesikhathi sokudlulisela isimo esifana nesokukhanya kwezingcezu zepulasitiki zopende omnyama wombala omhlophe ohlakazeka emuva naphambili, usayizi wezinhlayiyana ezincane i-carbon black, yenza kubonakale ngaphakathi kuqina ukuhlakazeka kokukhanya okuluhlaza okwesibhakabhaka, ngakho-ke kuzoba nengxenye ebomvu eyengeziwe yokudlulisela ezofika futhi yethulwe ngombala ophuzi ompunga, ngokuphambene nalokho, Uma kusetshenziswa usayizi wezinhlayiyana ezimahhadla zekhabhoni emnyama lapho kufakwa umbala. , ikakhulukazi isibani esimnyama esimnyama, i-gray enethoni eluhlaza okwesibhakabhaka izotholakala.Tamol NN
Okwesibili, i-carbon black dispersion
Uma umbala omnyama ucolekile, izindawo zokuthintana ziningi phakathi kwama-carbon black aggregates, futhi kuqina ukuhlangana phakathi kwazo. Lapho i-pigment emnyama ixubene kuzo, i-carbon black isakazwa ngokulinganayo, kukhulu ukuhlakazeka kwayo, okungahlukanisa izinhlayiya ezimnyama ze-carbon, ukuze ekugcineni ifinyelele ubumnyama nombala ophakeme kakhulu. Ikhabhoni emnyama yesakhiwo ephansi kungenzeka ukuthi ifinyelele ekugxiliseni okuphezulu kune-carbon structural black ephezulu, kodwa ngakho idinga ukuhlakazeka okukhulu ohlelweni lokuhlakazwa. Ukusebenza kokuhlakazeka kwe-carbon black kuthintwa yizinga lesakhiwo sayo. Isakhiwo esiphezulu sekhabhoni emnyama sinokusebenza okuhle kokuhlakazeka, ngakho amandla ayo ombala anamandla ngokwemvelo. Kodwa ekusetshenzisweni kwekhabhoni eyimpuphu emnyama, kuzoba nezinkinga zothuli ezihlakazekile nezinzima, ngakho-ke, ungasebenzisa i-masterbatch noma i-slurry, ngakho-ke intengo ye-carbon black eyenziwe ngaphambili iphakeme kunokusetshenziswa okulula kwe-pigment emnyama, kodwa uma ucabangela izinzuzo zokuhlanza inqubo, ukusebenza kahle okuphezulu, ukusetshenziswa kwe-carbon black ukulungiselela kusadingeka kakhulu.Tamol NN
Isikhathi sokuthumela: May-30-2022