Persico uses Araldite adhesive for racing yacht

Italian yacht maker Persico has used a Huntsman Advanced Materials adhesive in the build of a new design of Volvo Open 70 racing yacht for the Abu Dhabi Tourism Authority.

Built by Persico at its Nembro site in Italy, the ‘Abu Dhabi’ is a 70 ft long vessel which is designed to weigh less, and be more robust, than other yachts in its class.

To achieve the high levels of component endurance and performance required to compete in demanding yacht races, Persico has used Huntsman Advanced Materials' Araldite® AW4859 / Hardener HW4859 adhesive to complete the yacht. The adhesive fixes together different highly loaded components, from bonding titanium fittings to the yacht’s carbon structure, to assembling the hatch, rudder bearing sleeves and components, bow sprit, chain-plate, mast and keel structure.

Araldite AW4859 / Hardener HW4859 is a new structural adhesive designed for composite bonding. It is also suitable for bonding dissimilar substrates such as metals or thermoplastics. According to Huntsman, the key features of this adhesive are its sag resistance, gap filling properties up to 4 mm, high temperature resistance (140°C) and good moisture and chemical resistance.

The adhesive is also said to exhibit outstanding fracture toughness and lap shear strengths up to 35 MPa on carbon and glass fibre reinforced plastics.

“We selected Araldite AW4859 / Hardener HW4859 for its proven ability to deliver outstanding performance to marine applications," explains Mark Somerville from Persico.

"When it comes to delivering the exact levels of stiffness required to ensure the ‘Abu Dhabi’ performs well in racing conditions, Araldite® AW4859 / Hardener HW4859 is certainly living up to our expectations. We have been particularly impressed with its shear strength, coupled with its ability to withstand heavy loads, intensive strain and extreme conditions, as well as its bonding properties to the components and substrates on our racing yacht.”

Another Huntsman adhesive, Araldite420 A/B is used to bond many other details on the boat.

SPECY BOND : Adhesive for mold repair

If you're in the repair business, you will have spent a lot of time working with, and looking for, adhesives. This is often a complex process, and it's a good idea to have a reliable source of information available when you need it. Evaluating the requirements of some repair jobs can be tricky, and in repair work mistakes really aren't an option. If you regularly use anaerobic adhesives, silicone adhesives, retainers, or similar materials, there are some easy ways to make sure you can conduct a full evaluation and find the right solutions.
Repair issues and basic adhesive evaluations
In many types of repair work like automotive and trades work, the need is for adhesives which meet particular industry and in many cases statutory or even contract standards. When you're evaluating adhesive options, you can use these standards as a working frame of reference. Adhesive specifications may not be light reading, but they can also ensure you're getting the correct quality adhesives for your work.
A typical case: Pipe sealing
There's a virtual library of standards in terms of viscosity and chemical tolerances related to this type of adhesive. The proper quality adhesive will provide a high value psi instant seal, and be structurally as strong as the pipe. The practical value of this information for repair work is that you can be absolutely sure that the adhesive which meets these criteria will do the job.
Evaluation of adhesives from the ground up
As all repairers know, some jobs are neither simple nor straightforward. You may find yourself using multiple adhesives on multiple materials, and have to figure out what you need from the ground up.
The best way to do this is systematically. Use each separate bonding issue as part of a progressive process for evaluation, much the same way as you'd structure the actual repair work:

Start with the major materials and their structural bonds: These are heavy duty bonds, and they're integral to the job. The materials to be joined define the type of adhesive required. For motor repairs, for example, anaerobic adhesives are commonly used.

Secondary bonds: These are the less structurally significant bonds, and will include a range of materials, particularly in mechanical repairs. Again, compare materials for bonding and select a bonding agent which is targeted to both materials.

Additional bonds and joins: These may involve components or other elements which could need additional adhesive-related things like gasketing. These are separate jobs by definition, and you'll need specific types of adhesives for them.
Note: Test bonds prior to committing to the repair, particularly if you haven't used the adhesives before.
Getting help if you need it
There's always something in a repair job which may not be easy to deal with. The best approach to a dubious situation is to get in touch with the adhesives manufacturers direct, and you'll find you can get a lot of useful information in a hurry. Their websites are also full of helpful information, and you can check out product specifications in detail