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
A. Melamine resins
B. Teflon
C. Dacron
D. None of these
A. Acetylene
B. Chloroprene
C. Isoprene
D. None of these
A. Resorcinol
B. Phenol
C. Para-cresol
D. Melamine
A. Methyl methacrylate
B. DMT
C. Butadiene
D. Tetrafluoroethylene