A. Electrical insulation
B. Toys making
C. Coating and films
D. Packaging
Polymer Technology
Polymer Technology
A. Unsaturated polyester
B. Alkyd resins
C. Saturated polyester
D. Amino resins
A. Improve its impact strength
B. Improve its elasticity
C. Reduce the melt viscosity & glass transition temperature
D. Prevent its thermal degradation
A. Wet tear and bursting strength
B. Folding endurance
C. Wet rub resistance
D. All A., B. & C.
A. Low density polythene
B. Poly vinyl chloride
C. Polystyrene
D. Polyhexamethylene adipamide
A. Epoxy polymer
B. PVC
C. Polystyrene
D. Polythene
A. Abrasion resistance
B. Thermal stability
C. Adhesion to rubber
D. Hardness
A. Butadiene copolymers, Polyamides, Urea-formaldehyde
B. Cellulose derivatives, Polyisoprene, Polyethylene
C. Cellulose derivatives, Polyamides, Polyurethane
D. Polypropylene, Poly vinyl chloride, Silicon
A. Caprolactam
B. Adipic acid and Hexamethylenediamine
C. Maleic anhydride and Hexamethylenediamine
D. Sebacic acid and Hexamethylenediamine
A. Are made by addition polymerisation reaction only
B. Contain an epoxy group (fig bellow) at the ends of the polymer
C. Are cross-linked polymers only
D. Use emulsion polymerisation methods