high impact polystyrene
TRANSCRIPT
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