Epoxy value

Epoxy value derives from the Epoxy equivalent weight (EEW) or Weight Per Epoxide (WPE) and is a measure of the epoxy content of an epoxy resin or epoxy reactive diluent, or glycidyl ether.[1] This is an important parameter as it allows determination of the correct mix ratio of an epoxy system with a curing agent.[2] The epoxide equivalent weight is usually measured first and done by titration. The standard test method is ASTM D1652 though this has been modified by certain states of the USA.[3] The epoxy equivalent weight (EEW) maybe defined as: the number of grams of epoxy resin required to give 1 mole of epoxy groups.[4] The epoxy value is defined as the number of moles of epoxy group per 100g resin.[5]

  1. ^ Howarth, G.A (1995). "5". In Karsa, D.R; Davies, W.D (eds.). Waterborne Maintenance Systems for Concrete and Metal Structures. Vol. 165. Cambridge, U.K: The Royal Society of Chemistry. ISBN 0-85404-740-9.
  2. ^ "How do you know how much hardener to mix with how much resin?:Ask the Doctor". www.mereco.com. Archived from the original on 2022-09-13. Retrieved 2021-08-01.
  3. ^ "Determining Epoxide Equivalent and Amine Value of Resins" (PDF). Texas.gov.
  4. ^ Spyrou, Emmanouil (2012). Powder coatings chemistry and technology. Hanover. p. 129. ISBN 978-3-86630-884-8. OCLC 828194496.{{cite book}}: CS1 maint: location missing publisher (link)
  5. ^ Howarth, GA. Master of Science thesis "The synthesis of a legislation compliant corrosion protection paint system, based on waterborne epoxy, urethane and oxazolidine technology". April 1997 Imperial College London Chapter 2.1.1 page 32