Structural epoxy adhesive will bond even the most challenging PBT blends
05 July 2011
Permabond Engineering Adhesives has introduced a new PBT bonding grade of structural epoxy adhesive, Permabond ES5741 which is capable of bonding even the most challenging blends of polybutylene terephthalate (PBT) - commonly used to make injection moulded parts for automotive, electrical and medical industries - offering excellent adhesion, high strength and high temperature resistance.
Certain PTB blends prove particularly difficult to bond. Permabond’s ES5741 has been found to work well on a number of filled varieties of PBT where other adhesives have shown poor adhesion characteristics. Many parts manufacturers have previously resorted to using ultrasonic, friction or spin welding joining methods - these are not only costly, they also restrict the choice of materials being joined (so are unable to bond PBT to metal for example) and the dimensions, fit and geometry of the joint are also limited.
Permabond ES5741 enables easy bonding of PBT to other materials (such as other types of plastic, phenolic, various metals etc). This offers the user much greater freedom of design and material selection. It can also cater for a small gap (up to 0.2mm) between parts which is impossible with ultrasonic, spin or friction welding. ES5741 is a single part epoxy so there is no need to measure and mix. Curing takes place when the adhesive is heated (either by oven, hot air gun or induction coil).
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