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MRAT - 1.005 - Adhesives: Reactive Resins, Epoxy, Polyester
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This wide range of epoxy adhesives and polyester resins is produced mostly as two-component systems. Curing is effected by the reactions of a resin and a hardener. Epoxy resins are used for the bonding of metals, ceramics, glass, rubber, plastics, wood, etc. Polyester resin has useful applications where glass fibre is involved and for bonding ceramics, some metals and rubbers.
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MRAT - 5.002 - Adhesives: Reactive Resins, Epoxy, Polyester
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This wide range of epoxy adhesives and polyester resins is produced mostly as two-component systems. Curing is effected by the reactions of a resin and a hardener. Epoxy resins are used for the bonding of metals, ceramics, glass, rubber, plastics, wood, etc. Polyester resin has useful applications where glass fibre is involved and for bonding ceramics, some metals and rubbers.In construction courses, epoxy adhesives are most likely to be used in small scale repair work.
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MRAT - 1.054 - Plastics: Glass-Reinforced Plastic, Resin Casting, Chemicals and Fumes
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A polyester resin, dissolved in styrene, is hardened by mixing with a catalyst. It sets in 10 to 30 minutes. All mixing vessels, etc, are disposable and are not cleaned with solvents. The resin is often used with glass-fibre reinforcement to give glass-reinforced plastic (GRP) which may be machined, cut or abraded. Small scale repair kits use similar materials but with the catalyst supplied as a paste.
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MRAT - 4.008 - 3-Dimensional Work: Embedding
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Embedding small objects in resin.Embedding resin comprises polyester dissolved in styrene (phenylethene). The styrene is made to polymerise (harden) by the addition of a catalyst (hardener), commonly MEK (methyl ethyl ketone or butanone) but sometimes benzoyl peroxide (dibenzoyl peroxide). It sets in 10 to 30 minutes. All mixing vessels, etc, are disposable and are not cleaned with solvents.
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