Four Ways Weather and Temperature Affect Epoxy Adhesives on Metal
Epoxy adhesives are trusted for their strength, durability, and versatility when bonding metal surfaces. However, like other chemical compounds, epoxies are prone to the influence of weather and temperature. Understanding the significance of epoxy adhesive for metal is vital for long-term bonding in outdoor construction projects and repairing metal equipment. Here are four ways weather and temperature impact epoxy adhesives on metal.
Curing time varies with temperature
The curing process is a chemical reaction that transforms epoxy from liquid to solid. Epoxy adhesives usually cure faster in warm temperatures. Furthermore, the reaction speeds up when exposed to high temperatures. However, it can be beneficial in some cases.
Additionally, if the temperatures are too high, it results in incomplete bonding or compromised strength due to the speedy curing.
Thermal expansion and contraction
The metal expands and contracts with temperature changes. It is when epoxy or structural adhesive accommodates its movement without cracking or losing adhesion. Temperature fluctuations can cause microfractures if the epoxy lacks flexibility or is not formulated to withstand thermal stress.
However, repeated expansion and contraction in the outdoor or industrial areas leads to premature bond failure. Hence, choosing an epoxy with a correct coefficient of thermal expansion helps reduce the risk.
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Moisture and humidity intrusion
Weather includes temperature and moisture. High humidity conditions or exposure to rain interfere with the binding process when the metal isn’t prepared. Moisture prevents the epoxy from adhering, leading to poor bonding, bubbling, and long-term degradation.
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UV and heat degradation
Prolonged exposure to sunlight and heat degrades the structural integrity of certain epoxy adhesives. UV rays lead to discoloration, chalking, or loss of bonding strength in outdoor applications. Furthermore, heat exposure softens and embrittles the epoxy, reducing its performance.
To mitigate these risks, it is essential to choose UV-stable epoxies or apply a protective coating in the bonded area. It protects the exposed area from harsh sunlight and elevated temperatures.
About ITW Performance Polymers:
ITW Performance Polymers offers the strongest epoxy for metal. It offers methacrylate adhesive, sprayable syntactic materials, acrylic adhesives, repair compounds, grouting and choking compounds, and wear-resistant coatings. Furthermore, the company provides high-quality adhesives, delivering exceptional durability and protection. It is also a part of the Fortune 200 companies. Contact them now to get the best putty for every product industry.
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