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Dec 13, 2011 | Article
By Edward M. Petrie
This article will first examine the reasons that external plasticizer modification may not be necessary with polyurethane adhesives and sealants. It will then review the possible value that can be...
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Nov 9, 2011 | Article
This article will focus on the moisture induced degradation of the bulk adhesive when the degradation is permanent. This is a mechanism known as hydrolysis. It is dependent on the chemical nature...
Oct 10, 2011 | Article
This article reviews that status of POSS for use in adhesive systems, primarily epoxy and polyurethane, although POSS has found advantages in other systems as well. The unique physical properties...
Sep 14, 2011 | Article
By Andy Extance
The diisocyanates used to produce polyurethane adhesives can be toxic, and so it's important to reduce the amount that users are exposed to. Polyurethane prepolymers can help achieve this, but...
Jul 18, 2011 | Article
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...
Apr 18, 2011 | Article
This article reviews epoxy adhesive formulations that can be used when cold weather application and cure are required. Curing agents for conventional epoxy resins are discussed as are epoxy...
Mar 9, 2011 | Article
To date, high bond strength two-component epoxies are the most commonly used adhesives in manufacturing wind turbine blades. Yet some properties, like resistance to environmental attack and working...
Jan 3, 2011 | Article
Adhesive formulators are normally concerned with the strength of the bonds their products form, and how they perform during their lifetime. But with the focus on careful use of resources increasing...
Dec 15, 2010 | Article
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...
Oct 20, 2010 | Article
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...