SpecialChem4Adhesives.com Articles and Editorials in Adhesives & Sealants

Cling Films Provide Adhesion without Adhesives

Tue, 24 Jan 2012 00:00:00 +0100

This editorial examines several processes that make it easier to reposition or debond substrates. The focus is on cling films that can adhere to a substrate without the use of adhesives. Practical applications include decorative wall coverings,... (Editorial)

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Renewable Additives for Adhesives and Sealants

Mon, 23 Jan 2012 00:00:00 +0100

This article provides an overview of renewable additive materials that are being used and developed for use in biobased adhesives and sealants. The drivers and barriers are also reviewed in an effort to determine their commercial sustainability and... (Article)

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Attaching Hard-to-bond Construction Materials for Innovative Performance

Tue, 10 Jan 2012 00:00:00 +0100

Epoxy adhesives are the longest-used, best known and among the most common structural adhesives in general use. Polyurethanes are much more flexible, tough and elastic, which helps when adhesive bonds are subjected to impact or peeling forces and... (Editorial)

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Selecting Acrylic Emulsion PSA Dispersion Particle Size Distribution

Mon, 09 Jan 2012 00:00:00 +0100

Until recently the lack of control in emulsion polymerisations has meant that most acrylic PSA formulation knowledge came from solution polymerisation. But recent improvements have meant better polymer size distribution (PSD) control, which... (Article)

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Acrylic / Polyurethane Hybrid Waterborne Sealants

Wed, 28 Dec 2011 00:00:00 +0100

This article will first review the advantages of acrylic / polyurethane hybrid waterborne sealant formulations, and the routes to producing a polyurethane / acrylic base polymer system. The article will then describe possible starting formulations... (Article)

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Choosing Tackifiers for PSAs

Mon, 19 Dec 2011 00:00:00 +0100

Glass transition temperature and storage modulus are two essential properties in controlling a pressure sensitive adhesive's performance. Elastomers often don't initially have properties that fit in the "PSA window" so they need to be combined with... (Article)

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Plasticization of Polyurethane Adhesives and Sealants

Tue, 13 Dec 2011 00:00:00 +0100

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 achieved from using added plasticizers. The article... (Article)

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Adhesive Measures Help Food Packagers Optimize Recyclability

Mon, 12 Dec 2011 00:00:00 +0100

This year, the Retail Council of Canada (RCC) mandated that by 2012 supermarket clamshell food packaging should be made from PET rather than other thermoformed plastics. Their aim is to increase the amount of waste that can be recycled, but... (Editorial)

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Electrochemical Impedance Spectroscopy – A Tool to Characterize the Interface

Mon, 21 Nov 2011 00:00:00 +0100

This editorial discusses electrochemical impedance spectroscopy (EIS) and its uses in measuring the moisture resistance of conventional adhesive joints. EIS appears to be a valuable tool to study the interface for development of adhesive... (Editorial)

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What Adhesives Tell Forensic Scientists - and What that Can Tell Adhesive Formulators

Wed, 16 Nov 2011 00:00:00 +0100

Pressure sensitive adhesives (PSA) are very often encountered in forensic investigations. This year, forensic scientists using atomic force microscopy imaging and force mapping have studied PSAs in exceptional detail. This shows the existence of... (Editorial)

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Dehydrogenation Cure Silicones

Wed, 16 Nov 2011 00:00:00 +0100

To date there are no encapsulants that adequately protect UV LEDs without breaking down. Silicones are popular as LED encapsulants, but conventional addition cure formulations form organic crosslinks that can be broken down by UV light.... (Article)

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Degradation by Hydrolysis

Wed, 09 Nov 2011 00:00:00 +0100

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 of the polymer and the environmental conditions that... (Article)

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Let’s Not Forget the Bio-Fibers

Mon, 24 Oct 2011 00:00:00 +0200

This editorial looks at how natural fibers are being developed for 100% renewable adhesives and composites. Common natural fibers are identified and their properties are described. (Editorial)

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SEBS for High Performance Hot Melts

Wed, 19 Oct 2011 00:00:00 +0200

The conflict between needs that must be met when designing a hot melt adhesive can lead to a compromise that falls short of meeting any of them comprehensively. For example, styrene-ethylene-butylene-styrene (SEBS), an especially robust block... (Article)

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Replacing Volatile Organic Solvents in Shoemaking Adhesives

Wed, 19 Oct 2011 00:00:00 +0200

In May this year, a leading materials company announced a "green shoe" concept, where no solvent is present in the adhesives used in manufacturing footwear. That's desirable because of health impacts to shoe production workers and people near to... (Editorial)

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POSS – Nanoreinforcement of Structural Adhesives

Mon, 10 Oct 2011 00:00:00 +0200

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 of POSS are described and an explanation is given as... (Article)

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Nanosized Reinforcements for Adhesives

Wed, 05 Oct 2011 00:00:00 +0200

This editorial will look at nanosized particles that are under investigation as reinforcement for structural adhesives and are finding their way into high performance products. (Editorial)

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The Sustainability Question

Wed, 21 Sep 2011 00:00:00 +0200

Sustainability is a buzzword of our times, becoming an increasingly important aim for companies and governments alike. In the adhesive industry, it usually means replacing petrochemicals with plant-derived alternatives. In fact, there's already a... (Editorial)

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Keeping Low-isocyanate Emission Polyurethane Adhesives Flowing

Wed, 14 Sep 2011 00:00:00 +0200

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 usually at the cost of increases in viscosity. However,... (Article)

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Moving more with Less CO₂ - Bonding in the Automotive Industry

Wed, 07 Sep 2011 00:00:00 +0200

The motor car has been with us for more than 120 years and today it is hard to imagine life without the motor car. It has transformed our way of life, our landscape, and our outlook. Worldwide it has provided mobility, pleasure and economic... (Article)

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