Polyester

Aug 15 2001

Advantages

Tougher than Phenolic, DAP, Melamine and Urea.  Cheap compared to Epoxy.  Good gloss & colour (with gel coat).  Addition reaction on cure, therefore pressure not essential to provide defect-free products.  Vinyl Ester & Bisphenol Polyester has better chemical resistance than general purpose Polyester.

Disadvantages

Styrene causes health hazard and can taint products.  Heat resistance inferior to that of Epoxy and Phenolic.  Poor solvent resistance compared to other thermosets.  Catalysts can oxidise metals, so rarely used for encapsulation.

Applications

DMC & GMC: Mouldings for automotive use, small cabinets for meters, electrical devices, etc.  SMC: Large panels for automotive or constructional applications.  Resin: (Flake glass filled) for chemically resistant linings for concrete and steel vessels.  (Glass fibre filled) for filament winding, hand lay-up, centrifugal casting. 

 

Source : Abstracted from Plascams

For more information on Plascams please visit The Rubber and Plastics Research Association

 

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
(Logout)
Your comment type
Submit

Sponsored Content

Editorial Highlights

The Current State of the Global Semiconductor Market

The Current State of the Global Semiconductor Market

The global semiconductor market has entered an exciting period. Demand for chip technology is both driving the industry as well as hindering it, with current chip shortages predicted to last for some time. Current trends will likely shape the future of the industry, which is set to continue to show

How are Graphene Batteries Made?

How are Graphene Batteries Made?

The primary distinction between graphene-based batteries and solid-state batteries lies in the composition of either electrode. Although the cathode is commonly changed, carbon allotropes can also be employed in fabricating anodes.

Newsletters you may be interested in

See all Newsletters »