Chemistry: C1 - Paints and Pigments
- Created by: smithy316
- Created on: 31-03-15 13:23
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- Chemistry: C1 paints and pigments
- pigment; gives paint a colour
- colloid; ground up pigment - particles small it stays mixed in the paint
- 'dispersed' within the liquid
- THERMO -CHROMIC
- pigments sensitive to temperature
- chnage colour when hot or cold
- useful for baby bottles ; indicate when milk is cool enough to drink
- chnage colour when hot or cold
- pigments sensitive to temperature
- PHOSPHO-RESCENT
- pigments sensitive to light
- absorb the light during day
- useful for fire exits sign due to the ability to 'glow in the dark'
- re- emits when dark
- absorb the light during day
- pigments sensitive to light
- Examples - chalk or coloured rock
- colloid; ground up pigment - particles small it stays mixed in the paint
- Binding medium; makes the paint stick
- Examples - water or methylated spirits
- solvent; thins the paint
- Example - oil
- OIL
- PIGMENT - ROCK BINDING MEDIUM- OIL SOLVENT - METH SPIRITS
- SPIRITS EVAPOURATE SO THE PAINT DRIES
- PAINT FORMS HARD SKIN
- FUMES ARE HARMFUL - USE OUTSIDE
- WATER EVAPOURATES PAINT DRIES.
- LEAVING DROPS OF OIL AND PIGMENT - THESE THEN SPREAD AS THE WATER GOES.
- PAINT FORMS HARD SKIN
- SPIRITS EVAPOURATE SO THE PAINT DRIES
- PIGMENT - ROCK BINDING MEDIUM- OIL SOLVENT - METH SPIRITS
- EMULSION
- PIGMENT- CHALK/ROCK BINDING MEDIUM- OIL SOLVENT- WATER
- WATER EVAPOURATES PAINT DRIES.
- LEAVING DROPS OF OIL AND PIGMENT - THESE THEN SPREAD AS THE WATER GOES.
- WATER EVAPOURATES PAINT DRIES.
- PIGMENT- CHALK/ROCK BINDING MEDIUM- OIL SOLVENT- WATER
- pigment; gives paint a colour
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