[8] Performance Characteristics Of Polymers

Question 1

Describe the properties and uses of Low-density polyethylene (LDPE)

Answer 1

• Very tough, good chemical resistance, weather proof, low level of rigidity
• Squeezy detergent bottles, toys, carrier bags, bin liners, general packaging, food wrap film, food trays

Question 2

Describe the properties and uses of HDPE?

Answer 2

• Weather proof, tough, good chemical resistance

- Chemical drums, Jerry cans, toys, buckets, bowls

Question 3

Describe the properties and uses of polypropylene?

Answer 3

• Good chemical resistance, tough, good fatigue resistance

- Rope, folders, folio cases, food containers, medical equipment

Question 4

Describe the properties and uses of HIPS?

Answer 4

• Hard, rigid, tough

- Yoghurt pots, refrigerator linings, single use drink cups, toilet seats, instrument control knobs

Question 5

Describe the properties and uses of Urea formaldehyde?

Answer 5

• Hard, heat resistant, good electrical insulator, Brittle

- Electrical fittings, adhesives

Question 6

Describe the properties and uses of Melamine formaldehyde?

Answer 6

• Hard, opaque, , tough, heat resistant, food safe, chemical resistant
• Decorative laminates, picnic ware, buttons

Question 7

Describe the properties and uses of Neoprene?

Answer 7

• Good thermal resistance, toughness, good oil and chemical resistance, excellent weather resistance, good abrasion resistance
• Wetsuits, laptop cases, industrial wire insulation, automotive applications such as shock absorber seals, hose covers, transmission belts