| 配方類型： |
COATINGS |
| 配方說明： |
Lacquer Emulsion (Unpigmented) |
| 配方組成： |
"Sextate"/38.4
Castor Oil/8.0
Water/41.5
"Lissapol" NX/1.0
Ethylene Glycol Monobutyl Ether/2.5
"DHX" 30-50 (70/30 butanol wet)/8.6
"Monolite" Scarlet RN (grains)/- |
| 配制方法： |
Nitrocellulose emulsions are prepared by first making a uniform lacquer phase and then emulsifying.
Preparation of Lacquer Phase: (a) Lacquer phases for unpigmented emulsions: Dissolve the nitrocellulose, castor oil, and "Lissapol" NX in the solvents, using a good high-speed high-shear mixer. A milky solution will be obtained from water-wet nitrocellulose.
(b) Lacquer phases for pigmented emulsions: The simplest method is to use pigmented nitrocellulose chips. Follow procedure (a) but hold back some of the solvent mixture for dissolving the chips. If pigmented chips are not used, mill the pigment with some of the nitrocellulose solution.
Add this mixture, or the solution of pigmented chips, to the main solution.
Butanol-wet nitrocellulose is recommended for colored bases made by ball-milling pigment in nitrocellulose solutions using steel balls. This is to avoid excessive corrosion of the steel balls.
Emulsification: Add the lacquer phase slowly to the water. use rapid propeller stirr |
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