In this article, Jon Excell explains that structural adhesives have some inherent performance advantages over mechanical or fusion fastening. In car manufacturing, they are now the norm because their durability ensures consistent performance long after mechanical fixings start to loosen or fail. Our structural adhesives are designed to join two surfaces forming part of a load-bearing structure, with between 2800 and 3200 psi lap shear strength for most metallic substrate types. Read more.

MG Chemicals has recently released a new line of one-part epoxy adhesives for electronics
manufacturing that overcome some of the challenges traditional one-part formulations have
been facing as the demands of electronics manufacturers evolve. One-part epoxy adhesives
have long been mainstays of electronics manufacturing because of their ease of use and strong
physical and chemical characteristics, but their high cure temperatures, frozen storage
requirements, and limited shelf lives have started to become issues to more and more OEM’s.

As electronic components become thinner and smaller, high cure temperatures are becoming
more of an issue. Cure temperatures in traditional one-part systems can reach cure
temperatures as high as 170C. This was acceptable in many applications in the past, but in
modern electronics manufacturing operations cure temperatures that high are likely to cause
component damage. Ultra-thin copper wafers will actually warp, and many heat-sensitive
components will simply fail. Frozen, pre-mixed two-part systems in the past have sometimes
been tried as a solution to the cure temperature issue, since they cure at much lower
temperatures, but their weaker physical properties make them unsuitable for many applications.
Now, however, new one-part systems with lower cure temperatures are coming to the rescue.
One-part systems can now cure commonly at 100C, and sometimes even as low as 70C. This is
allowing one-part systems to continue to play an important role in electronics assembly.

Another major issue that has limited the use of one-part systems in the past has been their
onerous frozen storage requirements, but this too has now been overcome. Older one-part
systems must be stored at negative 40C. Freezers that can maintain this low temperature are
not inexpensive investments for smaller operations. As well, these products must be shipped in
dry ice, which is very expensive for small or mid size purchases, and a tedious obstacle to
redistributing product to distributed manufacturing sites and subcontractors. New one-part
systems can be stored at room temperature for anywhere from 9 months to two years,
depending on the formula. This greatly reduces up front costs, operating costs, and also allows
these products to be available in small quantities for prototyping through distribution, since most
distributors have been unwilling to deal with frozen storage or shipping requirements.

The removal of the frozen storage requirements for new one-part epoxy systems also provides
another bonus, which is unlimited working times. Traditional one-part systems would typically
have a working time of less than a day once they were removed from frozen storage. This would
mean that any adhesive not used by the end of the day must be discarded. The cost of this
waste can add up quickly over time, especially in the case of silver filled conductive epoxies. As
well, all filling lines and syringes would have to be thoroughly cleaned before they could be used
again. With modern one-part systems, an unfinished syringe may be put down at the end of a
work day and then picked up at the start of the next one and continue to be used.

Because this new one-part epoxy technology overcomes the three big issues of traditional
formulations, onerous storage conditions, high cure temperatures, and limited working times,
MG Chemicals is very optimistic about the positive impact on electronics assembly they are
sure to make in the years to come. MG Chemicals one-part epoxy adhesives are offered in
three categories: general purpose, thermally conductive, and electrically conductive and in a
variety of sizes and packaging to accommodate specific application requirements.
For more information on this exciting new line of products or any other MG Chemicals products,
come to visit us at booth# or check out our website (

As an IPC member, MG Chemicals is excited to participate in IPC APEX EXPO 2018, on February 27 to March 1, 2018 at the San Diego Convention Center, California, USA. We always enjoy the opportunity to familiarize the electronics design community with our product line, to promote our technical support, and to participate in standard setting committees.

This year, we will be presenting the following product lines:

  • 3D Printing Filaments – ABS, PLA, PETG, Wood
  • Adhesives – one and two-part epoxy systems, RTV silicones, thermally conductive, electrically conductive, flame retardant, and structural.
  • Conductive Coatings - for EMI/RIF shielding, electrolytic base coats, grounding, and ESD suppression. Solutions available for enclosures, board level applications, architectural applications, and extreme environments.
  • Conformal Coatings – acrylic, silicone, urethane, and epoxy
  • Electronic Maintenance Products - Cleaners, dusters, flux removers, contact cleaners, brushes, swabs, and pre-saturated wipes.
  • Greases - high thermal conductivity, electrically conductive, dielectric, and corrosion resistant
  • Potting and Encapsulating Compounds - Epoxy, urethane, and silicone
  • Solder and Accessories - including solder paste, desoldering braid, and flux

Say hi if you see us in the conference rooms or come visit us at booth #2143. Our technical team will be on hand to answer your questions and offer up solutions to your design challenges.

The MG Team

On January 1st, 2018, the WSIB effectively banned the use of nPB (1-bromopropane) in Ontario workplaces when it lowered the allowable airborne concentration from 1pp to 0.1ppm. nPB made a big splash in the market when it first appeared as a non-flammable cleaner for electronics, but as more toxicity data was produced over time, the health risks of this solvent looked worse and worse. Accordingly, regulators have been continually tightening the squeeze on nPB through the years and by now there are very few large professional users. As a result, the impact of this new regulation on the overall economy will be minor, however, for companies still using nPB, the time to change processes has come.

MG Chemicals offers a variety of non-flammable cleaners that can act as nPB replacements, such as 411 HFE Solvent and the 4120 Super HFE™ Electronic Cleaner. If the nPB ban is affecting your company, contact our technical support team so we can help find a solution for your process.

MG Chemicals will be exhibiting at the Southern Manufacturing and Electronics show on February 6 – 8, 2018 in Farnborough, Hampshire, UK.

This is the perfect occasion to discover or re-discover our extensive line of chemicals for electronics and our new products introductions for 2018:

Make sure to stop by our booth D100 to meet our technology experts and discuss how we can contribute to your success.

We look forward to meeting you there and discuss the many solutions we have to offer.

The MG Team

As we welcome 2018, MG Chemicals is proud of the relationships we have developed through our 62 years of existence. The trust and support of our distribution network and end-users has allowed us to develop innovative products to meet the challenges generated by the constant evolution of the electronics industry.

2017 was a very productive year for R&D at MG Chemicals. We introduced many new products and significantly enhanced our technical support capabilities.  We have more products coming to market in 2018, and we will be committed to offering the best support in the industry.

To all our clients and prospects, we wish you a very successful 2018. We look forward to assisting in overcoming the challenges you may face and contributing to your achievements in the upcoming year. Thank you for your continued support and giving us the opportunity to be a part of your success.

Previous Industry News

Structural adhesives: the many applications

Apr 09, 2018
In this article, Jon Excell explains that structural adhesives have some inherent…

Three good reasons to use One-Part Epoxy adhesives

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IPC APEX EXPO is just around the corner!

Feb 16, 2018
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New nPB restrictions in Ontario

Feb 11, 2018
On January 1st, 2018, the WSIB effectively banned the use of nPB (1-bromopropane) in…

Meet us at Southern Manufacturing 2018

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