TAGS: Acrylic Adhesives
Permabond launches of Permabond 712, a low-viscosity, water-resistant cyanoacrylate adhesive which can pass stringent 85/85 automotive ageing tests. Once cured, Permabond 712 has outstanding resistance underwater, as well as when used in hot and humid conditions.
Key Features of Permabond 712
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Good water and heat resistance
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Fast cure (seconds)
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High strength
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Bonds most surfaces
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Really easy to use
Permabond 712 provides strong bonds on a multitude of substrates, including metals, plastics and rubbers. Its adhesion to rubber is particularly noteworthy, considering that many underwater adhesive applications are rubber-based and that pipe seals and gaskets, as well as valve seatings (whether underwater or not) are often made of this material.
Permabond 712 offers much more than just water resistance, however. It also has excellent thermal resistance, maintaining 80% strength after 100 hours at 120°C on mild steel. It can withstand continuous exposure to this temperature, and can even go as high as 150°C for brief periods. In addition, the adhesive has great resistance to humidity and moisture, maintaining 90% of strength during 85/85 testing (85% relative humidity / 85°C) Its chemical resistance is also excellent – it will withstand exposure to oils and automotive fluids, for example.
Target Applications
Permabond 712 is highly suitable for the following applications (amongst others):
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Any application needing to withstand continuous water exposure
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Rubber seals and gaskets for pipes
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Rubber seatings in valves
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Automotive interiors
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Sports equipment
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Prosthetics and disability aids
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Jewellery & embellishments
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Household appliances, such as fridges and washing machines
Other key benefits of this adhesive are its rapid, room-temperature cure (typical of a cyanoacrylate), high bond strength, and ease of dispensing. It can be dispensed by hand straight out of the bottle, or can be used with automatic dispensing equipment. This in turn allows for a faster, smoother production process. The cured adhesive is clear, colorless and discreet, as well as being solvent-free.
Make sure not to use any primers or activators before using this adhesive, as these can interfere with its water-resistant properties.
Source: Permabond