NetComposites

Connecting you to the composites industry

Advertisement

Resin Comparison

  • Thursday, 24th January 2019
  • 0 comments
  • Reading time: less than a minute

The polyesters, vinylesters and epoxies discussed here probably account for some 90% of all thermosetting resin systems used in structural composites. In summary the main advantages and disadvantages of each of these types are:

Polyesters

Advantages:

  • Easy to use 
  • Lowest cost of resins available (£1-2/kg)

Disadvantages

  • Only moderate mechanical properties 
  • High styrene emissions in open moulds 
  • High cure shrinkage Limited range of working times

Vinylesters

Advantages:

  • Very high chemical/environmental resistance 
  • Higher mechanical properties than polyesters

Disadvantages

  • Postcure generally required for high properties 
  • High styrene content 
  • Higher cost than polyesters (£2-4/kg) 
  • High cure shrinkage

Epoxies

Advantages

  • High mechanical and thermal properties 
  • High water resistance 
  • Long working times available 
  • Temperature resistance can be up to 140°C wet / 220°C dry 
  • Low cure shrinkage

Disadvantages:

  • More expensive than vinylesters (£3-15/kg) 
  • Critical mixing 
  • Corrosive handling

Published courtesy of David Cripps, Gurit

http://www.gurit.com


Share this article


Continue to Other Resins Back to Osmosis

Comments (0)

Sign in or create an account to join in the discussion.

Leave your comment

Upcoming Events

Advertisement

Advertisement

Advertisement

Follow us
Subscribe to our email newsletter

Subscribe to receive our weekly round-up of all the industry's latest news, jobs, events and more!

We'll always keep your personal details secure and will never share them with third parties for marketing purposes. You can unsubscribe at any time. For further details on how we may use your data, please visit our Privacy Policy.