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Adhesives Ingredients
The material selection platform
Adhesives Ingredients
Epoxy

Epoxy Adhesives


Epoxy adhesives are thermosetting resins which solidify by polymerization and, once set, will soften but not melt on heating. Two-part resin/hardener epoxy systems solidify on mixing (sometimes accelerated by heat), while one-part epoxy adhesives require heat to initiate the reaction of a latent catalyst.

Explore advancements in the new structural epoxy adhesives (high lap shear strength at sub-ambient temperature, toughness and high hot/wet glass transition temperature Tg retention…).

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Dec 15, 2010 | Article

Unintended Epoxy Reaction Before Cure

By Edward M. Petrie

Unintended epoxy reactions can occur before the main curing reactions. These side-reactions can lead to serious impairment of joint strength. This editorial describes several examples of such...

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Oct 20, 2010 | Article

Curing Epoxy Adhesives with Dicyandiamide Catalyst

By Edward M. Petrie

This article first offers an introduction to the two main types of epoxy curing mechanisms. It then describes the characteristics and properties of dicyandiamide and how this material achieves...

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Oct 20, 2010 | Article

Surprising Green Extenders

By Edward M. Petrie

This editorial describes the increasing use of extenders that are based on naturally occurring materials. These can be used as additives or base polymers. Polymeric waste can also be used as a...

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Aug 25, 2010 | Article

Word Confusion: Biopolymer, Biodegradable, Bioadhesive?

By Edward M. Petrie

It seems that we are finding the prefix,“bio-“, in many words. The terms biopolymer, biodegradable, and bioadhesive are confusing. Are all biopolymers biodegradable? And are all biodegradable...

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Jan 13, 2010 | Article

Alternatives to Toughening

By Edward M. Petrie

This editorial describes various technical alternatives to improving the toughness in structural adhesives. Toughening, when done correctly, generally results in formulation having improved impact...

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Oct 21, 2009 | Article

Various Types of Composites Provide Bonding Challenges

By Edward M. Petrie

This article reviews generally the principles of bonding composite structures. The advantages and disadvantages for adhesive bonding of composite materials are summarized. The commonly employed...

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Jul 29, 2009 | Article

Epoxy – Urethane Hybrid Adhesives

By Edward M. Petrie

This article explains the necessity of epoxy hybridization and then focuses on the use of polyurethane elastomers to modify epoxy resin adhesives. The various approaches that have been employed in...

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Dec 17, 2008 | Article

The Use of Solvents in Epoxy Adhesive Formulations

By Edward M. Petrie

Solvents and diluents are used to lower the viscosity of epoxy resins systems to either permit easy compounding with other ingredients or to aid in application of the adhesive onto a substrate. Both...

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Sep 24, 2008 | Article

Formulating UV Curing Liquid Pressure Sensitive Adhesives

By Edward M. Petrie

Many formulation factors influence the performance properties of UV curing pressure sensitive adhesives (PSAs). This article is meant to serve as a primer for formulating these useful adhesives that...

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Jul 11, 2007 | Article

Bonding composite materialsPart 5: Bonding in naval construction, Boat building

Boat building was the first industry that started to use composites and to assemble it by bonding, starting in the fifties and sixties in USA. These composites were at that time only glass...

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