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Adhesives Ingredients
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Adhesives Ingredients
Polyurethane Adhesive

Polyurethane Adhesives


Polyurethane adhesives are used primarily in the assembly of printed-wiring boards to attach large components such as capacitors, magnetics, heat sinks, and connectors.

Key benefits of PU adhesives include flexibility, absorption of stresses, vibration damping, and thermal transfer. Being thermoplastic, polyurethanes are also easier to rework than epoxies.

Explore and learn about latest advancements and developments in polyurethane adhesives.

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Jul 18, 2011 | Article

Low-formaldehyde and Formaldehyde-free Adhesives

By Edward M. Petrie

Much has been made of recent, more severe changes in formaldehyde regulations as they apply to adhesives. These have been well-covered in previous SpecialChem articles and editorials. However, the...

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Jan 1, 2011 | Article

Formulation Details Draw Most Specialchem4Adhesives Readers

Thanks to how their component chemicals distribute themselves, adhesives are almost uniquely difficult to reverse-engineer. Yet, knowing how other people are making products is important from...

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Dec 1, 2010 | Article

Adhesive Industry Gets Serious on Renewable Starting Materials

Over the past two years SpecialChem4Adhesives readers have dramatically changed their outlook towards adhesives produced from materials obtained from biological sources. As an alternative to...

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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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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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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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Oct 11, 2006 | Article

Bonding CompositesPart 4: Various types of Adhesives for Composites: Polyurethanes, Heat stable adhesives, Syntactics, etc…

In previous chapters we have studied several types of adhesives for composites: epoxies, polyesters, structural acrylics... We are now studying other types available. Polyurethane chemistry is a...

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Jul 26, 2006 | Article

Bonding compositesPart 3: Various types of adhesives for composites: Acrylics, urethanes-acrylates and Polyesters.

In this section, we will study several types of structural adhesives which are used for the assembly of composites: Acrylics, Polyesters, and others. These are also called "engineering acrylics" or...

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Feb 16, 2005 | Article

Epoxy Hybrid Adhesives

A variety of polymers, both thermosets as well as thermoplastics, can be blended and co-reacted with epoxy resins to provide for a specific set of desired properties. The most common of these are...

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