1

High Impact Polystyrene(HIPs)

Prepared By: Gaurav Dave (130990136011)

2

Content

Introduction Properties Synthesis Applications References

3

Introduction

Polystyrene is the fourth biggest polymer produced in the world after polyethylene, polyvinyl chloride and polypropylene.

High Impact Polystyrene (HIPS) is a versatile, economical and impact-resistant plastic that is easy to machine and fabricate.

HIPS is often specified for low strength structural applications when impact resistance, machinability, and low cost are required.

4

5

RESISTANCE TO CHEMICALS Dilute Acid ** Dilute Alkalis **** Oils and Greases ** Aliphatic Hydrocarbons **** Aromatic Hydrocarbons * Halogenated Hydrocarbons * Alcohols * variable

KEY * poor, ** moderate, *** good, **** very good

6

General Properties Maintains strength in high-impact applications Can be painted Recyclable with good property retention Easily moldable FDA compliant grades Good dimensional stability Good gloss Low volatility

7

Synthesis

8

Styrene

Butadiene rubber

9

10

Applications

Yoghurt pots, refrigerator linings, vending cups, bathroom cabinets, toilet seats and tanks, closures, instrument control knobs.

It is frequently used machining pre-production prototypes since it has excellent dimensional stability and is easy to fabricate, paint, and glue.

Consumer products: Appliance components, toy, TV and audio-visual equipment parts, recording tape cassettes, bicycle trailer, toys.

Automotive industry: Instrument panels and fittings, gasoline tanks. Food Services: Hot and cold drinking cups. Office Products: Computer Housings.

11

References

http://www.bpf.co.uk http://www.eng-tips.com http://www.lgchem.com https://www.plasticsintl.com http://www.blackwellplastics.com/HIPS.html www.eni.com http://www.polystyrenepackaging.co.za http://www.makeitfrom.com