Kulezi zinsuku, abantu banaka ikhabhoni ephansi nokuvikelwa kwemvelo, ngakho-ke lapho ukuhlobisa, iningi labantu lizokhetha ezinye izimbobo ezinobungani. Namuhla ikakhulukazi sikhuluma ngezingubo zokumbona ezingamenzi zingemvelo. Izambatho ezingenamanzi zihlukaniswe ngezindlela ezimbili zokumbona: izigqoko ezincibilikayo zamanzi (izigqoko ezisuselwa emanzini) kanye nezingubo ezisuselwa ku-solvent. Manje umehluko phakathi kwalezi zimbozo ezimbili zamanzi?
Umehluko phakathi kwezigqoko ezisuselwa emanzini kanye nezimbobo ezisuselwa ku-solvent zingashiwo ngemibono elandelayo:
A. umehluko ezinhlelweni zokuhlanganisa
1. I-resin yehlukile. I-resin of upende osuselwa emanzini i-mater-soluble futhi ingahlakazeka (inciphisiwe) emanzini;
2. I-diluent (solvent) yehlukile. Upende osuselwa emanzini ungavinjwa nge-diwater (amanzi e-deionized) kunoma yisiphi ingxenye, ngenkathi upende osuselwa ku-solvent angahlanjululwa kuphela ngama-solvent arganic (i-odorless uphare-oyela, njll.).
B. Izidingo Zokwakhiwa Kwezinhlanganisela Ezihlukile
1. Ngendawo yokwakha, iphuzu lamanzi lamanzi lingu-0 ° C, ngakho-ke izigqoko ezisuselwa emanzini azikwazi ukusetshenziswa ngaphansi kuka-5 ° C, ngenkathi izigqoko ezisuselwa ku-solvent zingasetshenziswa ngenhla -5 ° C, kepha ijubane lokumisa lizohamba kancane phansi kanye nesikhathi phakathi kwamathrekhi kuzokhuphuka;
2. Ukuze uthole i-viscosity yokwakha, umphumela wokunciphisa ama-viscosity wamanzi ampofu, futhi upende osuselwa emanzini uzoba nenkinga enkulu lapho kuhlanjululwe futhi kuncishiswe ekuvulekeni (ukuncishiswa kwe-viscosity kuzonciphisa kakhulu okuqukethwe okuqinile koketshezi olusebenza ngopende, thinta amandla okumboza ngopende, futhi andise inani lokudlula kokwakha), ukulungiswa kwensiza esekwe solvent kulula kakhulu, futhi umkhawulo we-visa uzothinta nokukhethwa kwendlela yokwakha;
3. Okomisa nokomisa, upende osuselwa emanzini ubuthakathaka ngokwengeziwe, umswakama uphakeme futhi izinga lokushisa liphansi, ngeke liphulukiswe kahle, kepha uma izinga lokushisa liyaqhubeka isikhathi, kepha kususelwa emanzini Upende futhi udinga ukufudunyezwa ku-gradient, futhi kuzongena endaweni yokushisa ephezulu khona manjalo. Ngemuva kokuphakama kokupenda okususelwa emanzini kuchichima okuchichima komoya wangaphakathi wamanzi kungadala ama-bapoles noma ama-bubbeling amakhulu, ngoba kuphela amanzi asetshenziswa njenge-dilount kupende osuselwa emanzini, futhi akukho ukuguquguquka kwe-gradient. Okwezimbobo ezisuselwa ku-solvent, i-dilount yakhiwa izixazululo ze-organic ngamaphoyili ahlukahlukene ahlukahlukene, futhi kunama-gradients amaningi wokuvuthana. I-Penomena efanayo ngeke yenzeke ngemuva kokukhanya (isikhathi sokusoma ngemuva kokuqedwa kwezokwakhiwa esikhathini sokumiswa ngaphambi kokungena kuhhavini).
C. umehluko ekuhlobisweni komhlobiso we-coating ngemuva kokwakheka kwefilimu
C-1. Ukuchazwa okuhlukahlukene okucwebezelayo
1 I-Solvent-based Coatings ingalawula ukubusa kwemibala kanye nama-filler ngokuya ngokugaya, futhi akulula ukuthuthumela ngesikhathi sokugcina. Ngokungeza ama-resin ukulawula i-PVC ye-coating (izithasiselo ze-pigment-to-base), izengezo (ezifana nama-ejenti akhuphukayo) ukuze uzuze izinguquko ku-gloss of the gloss filfilimu, i-matte, i-matte, kanye ne-high- isicwebezelisi. I-gloss of upende wemoto ingaba phezulu njengo-90% noma ngaphezulu;
2. Ukubonakaliswa kwesicwebezeli sopende osuselwa emanzini akwenzi kakhulu njengopende osuselwa ku-oyili, futhi isichasiso esinamandla esisezingeni eliphakeme simpofu. Lokhu kungenxa yokuthi amanzi opende osuselwa emanzini asetshenziswa njenge-dilount. Izici zokuzithathela amanzi zizenza kube nzima ngopende osuselwa emanzini ukuze
Veza okungaphezulu kwama-85% gloss slorver. .
C-2. Inkulumo ehlukile yombala
1. Izimbobo ezisuselwa ku-solvent zinobubanzi bemibala kanye nama-filler, kungaba i-inorganic noma i-organic, ngakho-ke imibala ehlukahlukene ingashintshwa, futhi ukuvezwa kombala kuhle kakhulu;
2 Ngenxa yethoni yemibala engaphelele, kunzima ukuguqula imibala ecebile efana nopende osuselwa ku-solvent.
D. Isitoreji nokuhamba
Upende osuselwa emanzini awunazo izixazululo ezivuthayo ze-organic, futhi ziphephile ukuwagcina nokuhamba. Uma kwenzeka kungcoliswa, zingagezwa futhi zihlanjululwe ngenani elikhulu lamanzi. Kodwa-ke, upende osuselwa emanzini unezidingo zokushisa zokugcina nokuhamba. Ubisi nezinye izinkinga.
E. Ukudlula okusebenzayo
Izaziso ezisuselwa ku-Solvent ikakhulukazi imikhiqizo e-organic, futhi imikhiqizo ye-organic izoba nochungechunge lwezinkinga ezifana no-Chain Scomization kanye ne-carbonization ngaphansi kwezimo zokushisa eziphakeme. Njengamanje, ukumelana kakhulu kwezinga lokushisa kwemikhiqizo ye-organic akudluli ku-400 ° C.
Izimbambo ezikhethekile zokuvimbela izinga lokushisa ezisebenzisa ama-innorganic akhethekile ezimbozweni ezisuselwa emanzini zingamelana namazinga okushisa ezinkulungwane zama-degree. Isibonelo, izigqoko ze-ZS zichungechunge olusezingeni eliphakeme lokushisa amanzi lokushisa amanzi angacabangi ngokulwa nezakhiwo ezi-anti-oxidation zezingubo ezijwayelekile, kepha futhi nokumelana okuphezulu okuphezulu okuphezulu, okufika kumazinga okushisa aphezulu, okungu-3000 ℃ akunakwenzeka ngezimbali ezisuselwa ku-solvent.
G. umehluko ekuvikelekeni nasekuvikelweni kwemvelo
Izigqoko ezisuselwa ku-Solvent zinezingozi zokuphepha zomlilo nokuqhuma ngesikhathi sokukhiqiza, ukuthuthwa, ukugcinwa nokusetshenziswa. Ikakhulu ezikhaleni ezivalekile, maningi amathuba okubangela ukwanda nokuqhuma. Ngasikhathi sinye, izixazululo ze-organic nazo zizokwenza ukulimala okuthile emzimbeni womuntu. Icala elidumile kunazo zonke lapho iTolueneenegale ebangela umdlavuza, futhi uToluene akasavunyelwe ukusetshenziswa. I-VOC ye-solvent esekelwe e-solvent iphakeme, futhi imikhiqizo evamile iphakeme kakhulu njengama-400. Amabhizinisi angaphansi kwengcindezi enkulu ekuvikelweni kwemvelo nokuphepha lapho ekhiqiza futhi esebenzisa izimbotshana ezisuselwa ku-solvent.
Izambatho ezisuselwa emanzini zinobungane ngemvelo futhi ziphephile ekukhiqizweni, ezokuhamba, ukugcinwa, kanye nokusebenzisa (ngaphandle kwezimbozo ezisuselwa emanzini ama-pseudo-ants kusuka kwabakhiqizi abangahlelekile).
Isiphetho:
Izambatho ezisuselwa emanzini kanye nezigqoko ezisuselwa ku-solvent zinezinzuzo zazo nobunzima. Ngoba ucwaningo ngezimbozo ezisuselwa emanzini zisavuthiwe, ukusebenza kwezingubo ezisuselwa emanzini ngeke zihlangabezane ngokugcwele izidingo zokukhiqiza umphakathi. Ukusetshenziswa kwezingubo ezisuselwa ku-solvent kusadingeka. Isimo sangempela siyahlaziywa futhi sahlulelwa, futhi ngeke sinqatshelwe ngenxa yokungathandeki okuthile kopende. Kukholakala ukuthi ngokujula kocwaningo lwesayensi ezimbozweni ezisuselwa emanzini, ngolunye usuku, izimbangi ezintsha zemvelo zizosetshenziswa kabanzi kuwo wonke amagumbi onke omhlaba.
Isikhathi Seposi: Jan-13-2022