Plastic tubes & pipes are generally made by __________ moulding.
Options
A. injection
B. transfer
C. extrusion
D. compression
Correct Answer
extrusion
Polymer Technology problems
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1. Which of the following is the most important rubber compounding ingradient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness?
6. Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxident used in rubber?
10. Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m2. Which of the following polymers has the maximum film elongation (of the order of 100%)?