izindaba

Njengoba i-viscosity ye-resin esuselwa emanzini iphansi kakhulu, ayikwazi ukufeza izidingo zokusebenza kokugcina kanye nokwakha ukusebenza kwe-coating, ngakho-ke kuyadingeka ukusebenzisa umkhulu ofanelekile ukuze uguqule i-viscoatis esuselwa emanzini.

Kunezinhlobo eziningi zabakhulu. Lapho ukhetha abakhulu, ngaphezu kokusebenza kwabo okuthuthukayo nokulawulwa kwe-Rheology ye-coating, ezinye izinto kufanele zibhekwe ukwenza ukuthi i-coating ibe nokusebenza okungcono kakhulu kokwakha, ukubukeka okuhle kakhulu kwefilimu kanye nempilo ende kakhulu yenkonzo.

Ukukhethwa kwezinhlobo ezibanzi kususelwa ikakhulu kwisidingo kanye nesimo sangempela sokwakhiwa.

Lapho ukhetha futhi usebenzisa izikhukhu, lezi zibalulekile.

1. I-High Molecular Heand HEC ine-degree enkulu yokufakelwa ngokuqhathaniswa nesisindo esiphansi se-molecular futhi kukhombisa ukusebenza kahle okukhulu ngesikhathi sokugcina. Futhi lapho izinga le-shear likhuphuka, isimo somoya sibhujiswa, isilinganiso esikhulu kakhulu se-shear, okuncane kakhulu kwesisindo se-molecular ekubonakaleni. Le ndlela yokuqina ayihlangene ngalutho nesisekelo sezinto, imibala kanye nezithasiselo ezisetshenzisiwe, kudingeka kuphela ukukhetha isisindo se-molecular se-cellulose futhi ulungise ukugcwala okukhulu kungathola ukubonwa okulungile, futhi ngaleyo ndlela kusetshenziswe kabanzi.

I-OneUur Frecirener iyisisombululo esinamanzi esibonakalayo esine-diol noma i-diol ether njenge-solvent, ngokuqukethwe okuqinile kwe-20% ~ 40%. Iqhaza le-solvent co-solvent ukuvimbela ukunamathela, ngaphandle kwalokho abakhulu abanjalo basesimweni se-gel ngokuhlushwa okufanayo. Ngasikhathi sinye, ukuba khona kwe-solvent kungakugwema umkhiqizo ekuqandeni, kepha kufanele kufudunyezwe ebusika ngaphambi kokusebenzisa.

3. Imikhiqizo eqinile eqinile, ephansi ye-viscosity kulula ukuyilahla futhi ingahanjiswa futhi igcinwe ngobuningi. Ngakho-ke, ezinye izikhulu ze-heur zinokuqukethwe okuqinile okuqinile komkhiqizo ofanayo. Ukuqukethwe okuhlanganisiwe kwesiqubulo esiphansi amakhulu aphezulu aphezulu, futhi ukubonwa kwaphakathi nendawo kopende kuzokwehla kancane lapho kusetshenziswe, kungahle kususwe ngokunciphisa i-solvent yengezwe kwenye indawo ekwakhekeni.

4. Ngaphansi kwezimo ezifanele zokuxuba, i-visseti ephansi uHeur ingangezwa ngqo ku-latex Paints. Lapho usebenzisa imikhiqizo ephezulu ye-viscosity, umkhulu udinga ukuxutshwa ngenhlanganisela yamanzi kanye ne-solvent ngaphambi kokuthi ingezwe. Uma ufaka amanzi ukuze unciphise umkhulu ngokuqondile, kuzonciphisa ukufinyeleleka kwe-solvent yoqobo kulo mkhiqizo, okuzokwandisa ukunamathela bese kubangela ukuba i-viscosion ikhuphuke.

I-5 Ijubane lokungezwa akufanele libe ngokushesha kangangokuba ukhula kangangokuba uhlala phezu koketshezi, kepha kufanele adonswe ku-ketshezi futhi acwiliswe emgodini oshubile, uma kungenjalo ukhula luhlanganiswe kahle noma umkhululi luzoqina ngokweqile noma i-flecculated ngenxa yokuhlushwa okuphezulu kwendawo.

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7. Amakhulu weHaye angezwa ngqo kupende ngesimo se-emulsion ekwenziweni kwamapende e-emulsion ngaphandle kwe-dilution yangaphambilini noma ukungathathi hlangothi. Ingangezwa njengengxenye yokugcina esigabeni sokuxuba, esigabeni sokuhlakazeka se-Pigment, noma njengengxenye yokuqala ekuxubeni.

8. Njengoba i-hase iyi-emulsion ephezulu ye-acid, ngemuva kokungeza, uma kukhona i-alkali ku-emulsion Paint, izoncintisana le-alkali. Ngakho-ke, kuyadingeka ukwengeza i-hase ubukhulu i-emulsion kancane futhi ngokuqinile, futhi uvuse kahle, kungenye indlela, kuzokwenza uhlelo lokuhlakazeka kwe-pigment noma i-emulsion licter Ukufakelwa kwendawo, futhi kwaziswa yiqembu elingaphansi komhlaba.

I-9. I-Alkali ingangezwa ngaphambi noma ngemuva kokuthi umenzeli wokuqina angeziwe. Inzuzo yokungeza ngaphambi kokuqinisekisa ukuthi akukho ukungazinzi kwendawo yokuhlakazeka kwe-pigment noma i-emulsion i-Binder izobangelwa yi-orkalir ebamba i-alkali ebusweni noma i-binder. Inzuzo yokwengeza i-Alkali ngemuva kokuthi izinhlayiya ezinkulu zihlakazekile kahle ngaphambi kokuba zivuvukale noma zichithwe yi-alkali, ukuvimbela ukuqina kwendawo noma ngenqubo yokukhiqiza, ngokuya ngenqubo yokukhiqiza. Indlela ephephe kunazo zonke ukunciphisa i-hase sikhulu ngamanzi kuqala bese uyithambekele nge-alkali kusengaphambili.

I-10. I-Hase ubukhulu iqala ukuvuvukala ku-ph ezingaba ngu-6, futhi ukusebenza okugcwele kuza ukudlala okugcwele ku-PH ye-7 kuye ku-8. Ukulungisa i-PH ye-Latex Paint ku-10 , ngaleyo ndlela uqinisekise ukuqina kokubonakala.