Muaj peb hom Mark cwj mem raws li tus cwj mem: cawv, oily, thiab dej-soluble.
Oily kev puas tsuaj rau tib neeg lub cev, nrog kev tshem tawm ntawm kev ua lag luam, feem ntau yog hloov los ntawm kev haus cawv nrog cawv, yog li cov cim oily peb pom yog cawv.
Oily=cawv
Yog li ntawd, tsuas muaj ob hom oily thiab dej-soluble ntawm lub khw.
Qhov txawv ntawm oily thiab dej-soluble:
Roj (alcoholic):
Cov khoom xyaw: methanol, pigment
Nta: tsis tuaj yeem ua ke ntawm cov xim
Qhov zoo: tsis muaj dej, qhuav sai, yooj yim rau pawg xim, nws tsis yooj yim rau plaub, cov xim sib xyaw yog qhov zoo, xim saturation siab, xim ci dua, xim zoo ib yam, thiab cov qhab nia ntawm tus cwj mem yog tsawg.
Disadvantages: pungent. Koj tuaj yeem khaws qhov cua thaum koj siv nws.
Daim ntawv: ntawv sulfuric acid, ntawv tshwj xeeb rau cov cim, ntawv comic. Yog tias koj tsis paub tias siv daim ntawv twg, siv daim ntawv tuab.
Dej-soluble:
Cov khoom xyaw: dej, pigments
Nta: Cov xim yog yaj ntawm cov xim, thiab cov xim hloov ntau yam. Yog hais tias nws yog siv nrog ib tug cwj mem nrog dej, cov nyhuv zoo ib yam li watercolor.
Qhov zoo: tsis pungent, stacked, kuj tsis tshua muaj xim saturation, tsis ci li oily.
Disadvantages: non-waterproof, yooj yim rau tis, thiab rov qab xim yuav ua rau cov xim qias neeg, tsis zoo sib xyaw cuam tshuam, yooj yim rau tawg daim ntawv, daim ntawv yog ib qho yooj yim kom tau lub pob ntawv, thiab nws yog ib qho yooj yim los mus ua mob stroke.
Vim tias cov xim hloov ntau dua tom qab cov xim sib xyaw ua ke, cov khoom siv dej yog qhov nyuaj rau tus tswv dua li oily.
Daim ntawv: tooj liab version ntawv, cardboard, comic thawj daim ntawv, Mark cwj mem -specific paper. Ib yam li saum toj no, daim ntawv tuab.
