The first 'instant' cyanoacrylate adhesive for harsh applications

Intertronics offers Born2Bond Ultra K85, a fast curing, single-part adhesive, the first ‘instant’ adhesive to withstand up to 1,000 hours at 85C and 85% relative humidity. It can bond a broad range of substrates, including plastics, rubbers, and metals and is applicable to applications in consumer electronics, automotive, and medical device manufacturing.

The product is the first cyanoacrylate adhesive capable of passing 85/85 testing. The 85C/85% RH test is a standardised environmental reliability test in which a product or material is exposed to a constant temperature of 85C and a relative humidity of 85% for an extended period, typically up to 1,000 hours. This test is created to simulate harsh, real-world environmental conditions and is widely utilised to assess the durability, reliability, and expected operational life of products, particularly those intended for long-term use in challenging climates. It is considered a standard for qualifying products that must withstand hot, humid, or tropical environments.

Along with excellent resistance to humidity and high temperatures, the adhesive exhibits superior flexibility and elongation (30%), providing good peel resistance. Its low odour and low blooming characteristics make it ideal for applications where appearance is important. It supplies a clean finish with no white residue without sacrificing speed or bond strength.

The adhesive is manufactured from reliable, sustainable resources, including 60% bio-based raw materials. It passes ISO 10993-5 cytotoxicity testing, which makes it an ideal candidate for use as a medical device assembly adhesive.

“Ultra K85’s fast cure, low blooming, excellent durability and resistance, and flexible properties facilitate use in applications where cyanoacrylate adhesives (CAs) were not previously considered,” explains Kevin Brownsill, head of Learning and Development at Intertronics. “Traditionally, cyanoacrylate adhesives are not good with moisture and/or heat, are inflexible, have poor peel strength, bloom and smell. K85 addresses these limitations and presents new opportunities for various applications.”

Ultra K85’s capability to withstand 85/85 makes it a robust candidate for applications that need long-term durability, including those in outdoor or harsh environments – while still supplying the advantages of a single part and very fast cure. CAs are the only single-component, fast-bonding adhesives that cure in ambient conditions without requiring any external energy source.