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A Rigid foam is produced after mixing two viscous
liquids and the volume of polyurethane Foam is 20 to 30 times that of the
original mixture.
- Part A (light amber in color) : polyester polyol, a blowing agent, a silicone surfactant, and a catalyst.
- Part B (dark in color) : polyfunctional
isocyanate.
Instrument List:
- Polyester polyol (part A) from Industrial Arts.
- Polyfunctional isocyanate (part B) from Industrial Arts.
- Stirring sticks.
- Plastic cups.
- Food color.
- Tablecloth.
- Gloves.
- Paper towel.
Procedures:
- Wear gloves.
- Pour equal amount (i.e. 5 ml) of part A and part B into a plastic cup.
- Add several drops of food color.
- Stir the mixture for about 2 minutes until the volume begins to increase.
- Waiting…
- After several minutes, it will become solid.
Applications:
Shoe
soles, car seats bumpers, and pipe thermal insulator, refrigerator and
adhesives, coatings, furniture and so many other things.
