Developed by Henkel, Loctite has launched a new adhesive, the LOCTITE HY 4090. The adhesive combines the fixture speed of an instant adhesive – also known as a cyanoacrylate – with the durability of an epoxy.
This technology can be used in the assembly of battery packs for electrical devices. To meet the projected production line volumes of a new product, the manufacturer sought an adhesive that was able to bond polyamide (PA) with a thermoplastic polymer (ABS), at speed. The resultant bond also needed to be resistant to operational fluctuations in vibration, temperature and humidity.
The hybrid adhesive features the speed and material versatility of a classic instant adhesive plus high temperature-performance and moisture/chemical resistance. It is suitable for temperatures up to 150 degrees centigrade and ideal for bonding highly stressed joints and those that are exposed to vibration.
Having cleaned the battery pack parts with LOCTITE SF 7063 to remove moulding compounds that may inhibit final bond strength, LOCTITE HY 4090 is then dispensed from a dual cartridge pack using a manual hand gun with mixer nozzle. The hybrid adhesive fixtures in just three minutes, minimising any potential blooming from exposed fillets of the cyanoacrylate-based product.
Epoxy-based adhesives are proven to provide exceptional static and dynamic strength and are the traditional choice for demanding structural bonding applications such as this. However, this technology typically requires a minimal fixture time of ten minutes. The LOCTITE HY 4090 is suitable for bonding load bearing parts and achieving handling strength in minimum time.
More information can be found here.
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