Plastics and Polymers Quizs

Urea Formaldehyde uses?

• Plug sockets, MDF glue, laminates.

• Paint thinner, wood stain, varnish.

• Insulation material, roofing tiles, concrete.

• Adhesive for ceramics, metal polish, cleaning agent.

Where is Acrylic (PMMA) used?

• Car lights

• Modern baths

• Clothing

• Construction materials

HIPS is used for...?

• Vacuum forming, yoghurt pots.

• Injection molding of plastics.

• 3D printing of metals.

• Thermoforming of glass.

What makes epoxy resin strong?

• It’s a one-part system: resin only.

• It’s a two-part system: resin + hardener.

• It’s made from natural materials only.

• It requires high temperatures to cure.

What structure makes thermosets rigid?

• Weak van der Waals forces.

• Strong cross-linked chemical bonds.

• Flexible polymer chains.

• Hydrogen bonds.

What is Phenol Formaldehyde known for?

• Heat resistance and electrical insulation.

• High tensile strength and flexibility.

• Low thermal conductivity and high reactivity.

• Chemical resistance and low density.

What products are made from HDPE?

• Milk bottles, wheelie bins, pipes.

• Glass bottles, aluminum cans, cardboard boxes.

• Plastic wrap, food containers, paper bags.

• Wooden crates, metal pipes, ceramic dishes.

Properties of PP?

• Flexible, lightweight, food safe, tough.

• Heavy, brittle, not food safe, soft.

• Rigid, heavy, food safe, fragile.

• Flexible, heavy, food safe, tough.

HDPE is known for being...

• Lightweight, stiff, chemical and rip resistant.

• Heavy and flexible.

• Brittle and easily breakable.

• Absorbent and porous.

PET properties?

• Tough, recyclable, clear finish, chemically resistant.

• Brittle, non-recyclable, opaque finish, chemically reactive.

• Soft, biodegradable, matte finish, chemically unstable.

• Heavy, non-recyclable, transparent finish, chemically resistant.