two component epoxy resin adhesive, amber colour, working life: up to 5 minutes, mixture ratios 1:1, temperature resistant from -50 bis +60 °C, hazard warnings: Xi irritant, N dangerous for the environment
In terms of its applications, the R & G 5 minute epoxy is comparable to the Weicon EPOXY MINUTE ADHESIVE. When cured, this adhesive does not become brittle but is rather hard and tough at the same time. It is resistant to numerous chemicals, oil, benzene and temperatures up to about 60 ºC. You have about 5 minutes working time with this epoxy at which point it will begin to become gel-like but can be put under stress after curing for a short 10 minutes. Once cured, this epoxy can be sanded and polished with good results.
If this adhesive is stored under +15 °C, both the resin and the hardener can crystallize. This crystallization must be gotten rid of before the adhesive is used by means of warming it in hot water (maximum 50 °C) and subsequently shaking it. This product should only be used if it is completely transparent!
Applications: Highly stress-able, gap-bridging bonds require the use of two component glues which, after both components have been mixed together, will cure into a solid plastic. The two component glues which are based on epoxy resin are distinguished by their being especially good for use with metals.
Treatment: Resin and curing agent (hardener) – the names of the two components – must be mixed in the correct ratios so as to ensure that the full adhesive strength is attained. The apportioning can be done by eye in the case of small amounts but larger amounts (over 20 grams) should be done by weight. The limited working life (open time) requires that the adhesive mixture be made in a sufficient amount to complete the job at hand. During the curing process the glue gives off a great deal of heat – temperatures over 100 ºC can be reached and these can lead to deformations in thin plastic assembly pieces.
Important: Larger amounts of two component glues start to turn into gels sooner because the heat being produced accelerates the reaction. This can be redressed by doing the mixing in a flat bowl. The opposite is naturally also true: by heating the mixture with, for example, a hair dryer, the hardening time of two component glue is shortened. Care should be taken when reclosing the containers: the caps should not be interchanged because they will then glue shut.
R&G 5 minute epoxy
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