Multiple choice

Match the following compounding ingredients in plastic technology with their respective functions:

 
Compounding
Ingredients functions
P. Nahcolite 1. Pigment
Q. Bis(2-ethylhexyl) phthalate 2. UV stabilizer
R. Titania 3. Blowing agent
S. Salol 4. Plasticizer

  1. P - 3, Q - 1, R - 4, S - 2

  2. P - 1, Q - 4, R - 3, S - 2

  3. P - 4, Q - 1, R - 2, S - 3

  4. P - 3, Q - 4, R - 1, S - 2

  5. P - 2, Q - 4, R - 1, S - 3
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Nahcolite (sodium bicarbonate) is commonly used as a blowing agent in the manufacture of rigid foams which are chiefly polystyrene polyurethane, epoxy and polyvinyl chloride. Dioctyl phthalate (Bis(2-ethylhexyl) phthalate) is the most common of the class of phthalates which are used as plasticizers. Titania (titanium dioxide) is the most important white pigment used in the polymer industry. Salol (phenyl salicylate) is used as UV stabilizer for commercial polymers and sun tanning lotions.

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