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New high temperature resistant epoxy adhesive
Permabond Engineering Adhesives Ltd has added a new high temperature resistant structural epoxy adhesive to its range. Permabond ET5401 has been developed to bond a wide variety of engineering materials such as composites, thermoplastics, metals and ceramic materials.
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raditionally, standard two-component epoxy adhesives (resin and hardener) can only resist temperatures of up to around 80°C before they soften, resulting in joint failure. Permabond ET5401 can successfully survive 140°C continuously, and maintain its performance characteristics. Permabond highlghts that it can be exposed to temperatures higher
than this for short periods, providing the adhesive is not overly stressed, and says that exposing the adhesive to such high temperatures actually increases the adhesive strength and long-term structural performance. “Permabond ET5401 is a toughened product which is ideal for bonding dissimilar materials (such as metal to composite)
where differential thermal expansion and contraction could be an issue. It is also suitable for applications where good impact and vibration resistance is important.” Permabond points out that Permabond ET5401 would be ideal for the composites bonding industry, the transportation market and automotive industries.
New adhesive for high technology industries
Intertronics says that its new adhere ADH9105 is an excellent example of a precision engineered application specific adhesive for high technology industries.
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dhere ADH9105 is a high viscosity black rubber toughened formulation that can tolerate temperatures up to 105°C (125°C intermittently) and is suitable for bonding metals, plastics and rubbers providing a bond of suitable flexibility, even capable of withstanding wave/reflow solder processes. The tough peel and cleavage resistant one-part adhesive features room temperature cure in seconds (without an
external energy source) and at 3,500cps - 5,000cps viscosity will not droop, run or sag before cure is completed. Dispensing is readily achieved in small quantities via standard squeeze bottles and in larger quantities, (e.g. for flow line production, by pressure pot, manual, semi-automatic or fully automated equipment available under the adhere brand). “The adhere ADH9105 has higher impact, humidity and temperature resistance with a more flexible bond than mainstream
cyanoacrylates – thus making it the adhesive of choice where gap filling and resistance to vibration, thermal shock or motion compliance are required, for example in mounting of electrical or electronic components, assembly of enclosures, cable boxes or in strain relief or simple wire tacking.”
Custom springs direct C
Lee Spring has introduced the ‘custom springs direct’ service to speed up delivery of bespoke customer solutions.
ustomers can email the company a drawing of their design idea direct to the dedicated custom spring design department and the team will respond with a quote within 24 hours. “The Lee Spring brand name has a global reputation for providing
the highest quality and widest range of ‘off the shelf’ catalogue spring products. However, more engineers are becoming aware of the in-depth spring custom design and manufacturing capability that the company can provide,” says Darren Eyre, technical sales engineer. “We are able to provide extensive custom design and production services for springs, wire forms, washers, stampings, four slide parts and assemblies via a streamlined process, to meet the timescales of most projects.” Since 1918 Lee Spring has been manufacturing custom springs and wire
forms for a wide variety of applications. Darren adds: “Our experienced engineers can work closely with customers from inception to completion so that nothing is left to chance. Our aim is to turn the engineer’s idea into reality; whatever the application, location or quantity.”
164 Fastener + Fixing Magazine • Issue 71 September 2011
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