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Let\u2019s start by discussing curing an adhesive at low temperatures. As mentioned earlier, since cold causes adhesive molecules to slow down, curing in the cold takes a lot longer than curing at room temperature. Fear not, however, as there are options available should you need to cure at a lower temperature than this \u2013 for example, if you\u2019re bonding something outside in cooler weather.<\/p>\n
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Permabond ET503<\/a> is a fast-curing two-part epoxy adhesive that can be cured at temperatures as low as 5\u00b0C (41\u00b0F). It bonds to a very wide variety of substrates and has excellent overall environmental durability, offering outstanding strength and toughness. Due to its ability to withstand water, moisture and humidity, it\u2019s ideal for use in outdoor applications. It offers good strength performance in temperatures as low as -40\u00b0C (-40\u00b0F).<\/p>\n <\/p>\n \u00a0<\/strong><\/p>\n <\/p>\n Curing an adhesive at room temperature may not be an issue for you, but instead you require an adhesive bond that withstands continuous exposure to low temperatures, and\/or can withstand frequent fluctuations in temperature.<\/p>\n <\/p>\n Example applications for cold-resistant adhesives:<\/p>\n <\/p>\n There are, of course, many other reasons you may need a cold-resistant adhesive; the examples above are just an overview.<\/p>\n <\/p>\n <\/p>\n If your project involves an adhesive being exposed to cold temperatures, or fluctuations in temperature, there are several factors that you need to consider before selecting an adhesive to use. These factors include, among others, the following:<\/p>\n <\/p>\n Let\u2019s start with substrates, the most important factor. As mentioned earlier, cold causes all materials to contract, and conversely, heat makes them expand. The extent to which materials expand and contract with temperature varies depending on that material\u2019s coefficient of thermal expansion<\/a>. This matters when dealing with low temperatures as well as large fluctuations in temperature. If one substrate contracts or expands much more with temperature than the one it\u2019s being bonded to, this can eventually lead to adhesive failure as the bond gets stretched out. It is therefore ideal to bond similar substrates when dealing with the cold, with either the same or very similar coefficients of thermal expansion. This page<\/a> shows the coefficients of many commonly bonded materials.<\/p>\n <\/p>\n For the same reason, it\u2019s also ideal to bond your substrates at the temperature in which they\u2019ll be operating. This ensures no subsequent breaking of the bond as the substrates adjust to the cooler environment after bonding. However, as mentioned earlier, if the environment is too cold, curing won\u2019t be possible. What you can consider here, however, is your joint design. It\u2019s best to adopt a joint design that utilises tension or compression forces, and avoids peel or cleavage forces, as these are where adhesives are most vulnerable to failing. Optimum joint design gives cured adhesives the best chance of staying stronger for longer, even when under duress from temperature changes.<\/p>\n <\/p>\n Lastly, optimum surface preparation of the substrates before bonding is crucial to ensure good adhesion. Make sure to remove any surface contamination, oxide layers and grease before applying the adhesive. Applying Permabond 2K Primer<\/a>\u00a0can help to improve the long-term durability of the bond.<\/p>\n <\/p>\n <\/p>\n You\u2019ve chosen your substrates, optimised your joint design and prepped your surfaces. Now, which adhesive should you choose for the best results? Flexibility<\/strong> is one of the most important features to look for in a cold-resistant adhesive. A product that is too rigid and offers no \u2018give\u2019 will be much more likely to weaken or break when faced with cold stress.<\/p>\n <\/p>\n Another important feature to look out for is good thermal resistance<\/strong>. Adhesives with this quality tend to not become so viscous in the cold, therefore retaining their ability to flow. Thermal resistance also means an adhesive will more readily withstand thermal cycling and shocks caused by sudden changes in temperature.<\/p>\n <\/p>\n <\/p>\n We recently launched a new breakthrough UV adhesive, Permabond UV6357<\/strong><\/a>. Originally developed for a manufacturer of freezer and fridge components, UV6357 provides excellent adhesion on glass and metals, as well as on rigid thermoplastics such as ABS, PVC and Nylon. Its outstanding thermal resistance means it withstands thermal cycling and shock, making sure that bonded joints remain flexible when subjected to temperature changes. It has high reactivity and will cure even when the UV light is filtered by the substrate, such as when bonding fritted glass.<\/p>\n <\/p>\n Permabond ET5428<\/strong> is a thixotropic two-part epoxy that provides outstanding performance at both elevated, and very low temperatures. On a recent overlap shear test conducted on CFRP at -40\u00b0C (-40\u00b0F), ET5428 retained 13MPa (1885 psi) of tensile strength. The adhesive also offers excellent resistance to impact and vibration, bonds a very wide variety of substrates and is a fantastic all-rounder. It\u2019s particularly beneficial in bonding composite materials and is one of our most popular products.<\/p>\n <\/p>\n Other products you might want to consider are Permabond MT- modified epoxies and MS polymers. These products offer more flexibility than other adhesive chemistries. For a faster cure, consider using an MMA (methylmethacrylate adhesive)<\/a>. In addition to curing quickly, these adhesives are toughened with rubber, meaning they offer really high bond strength as well as great thermal resistance.<\/p>\n <\/p>\n Another thing to remember is that we can custom make a product<\/a> to suit your exact project needs. If this is something you\u2019d be interested in, please get in touch with us.<\/p>\n <\/p>\n <\/p>\n![\"\"](\"https:\/\/permabond.com\/wp-content\/uploads\/2025\/08\/Screenshot-2025-07-24-111913.webp\")
Adhesives that offer continuous cold resistance<\/strong><\/h2>\n
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Tips to ensure optimum results when dealing with cold environments<\/strong><\/h2>\n
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Choosing the right adhesive for your project<\/strong><\/h2>\n
The best adhesives for continuous cold exposure and\/or temperature fluctuations (post-cure)<\/strong><\/h2>\n
Reliable Adhesives for Cold-Temperature Applications<\/h2>\n