two component methacrylate-based reaction adhesive, high strength adhesion, residual elasticity, utilized with the "no mix process" (no mixing!), transparent, colourless, temperature resistant from -40 °C to +130 °C (short term to +180 °C), hazard warnings: glue: F highly flammable, C caustic, activator: Xi irritant, F highly flammable, O oxidizing,
Attributes: Weicon RK-1500 is a fast curing (at room temperature) two component reactive adhesive which is based on methacrylate and is suitable for two-dimensional bonds. This adhesive has residual elasticity when cured. The curing process begins as soon as the adhesive is joined to a surface that has been moistened with the activator. Surfaces that have been coated with the activator can be glued for up to 30 days without having to worry that the reactivity of the activator will decline. This adhesive will fill gaps up to 0.8 mm (when both sides have the activator applied to them). After 5 minutes it is already strong enough to resist being pulled apart. After 24 hours the extremely high-strength final bond has been achieved.
Applications: The RK-1500 can be used to bond practically all metals (coated ones as well), most plastics (except PP, PE, and Teflon), wooden materials, ceramics, glass and stone. Note: this adhesive cannot be used on rubber!
Treatment: The prerequisite for flawless bonds is a clean and dry surface. Greater degrees of adhesive strength can be achieved by pre-treating a surface, e.g. roughing it up. The activator should be thinly applied with a brush on one of the adherends where it will evaporate after about 5 minutes. In the case of smooth plastic and metal surfaces, about 30 grams per sq. metre will be required; for porous surfaces up to 150 grams per sq. metre will be necessary. The honey-like adhesive glue component should be applied to the second adherend surface. After that, the pieces should be joined, positioned and affixed with a small amount of pressure (e.g. with a hand). The curing (polymerization) begins when the adhesive comes into contact with the activator (fairly secure after 5 minutes). In the case of bonds up to 0.4 mm, application of the activator to one side is sufficient; for larger bonds, up to a maximum of 0.8 mm, the applicator must be applied to both sides.
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.
Weicon RK-1500 construction glue
tube, glue (50g) + glass bottle, activator (10g)
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