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Adhesives - Coggle Diagram
Adhesives
PVA - Polyvinyl acetate (PVA) is common and cheap. It soaks into the fibres of woods, cards and papers and encourages them to interlock as the water evaporates. Very strong for fibrous porous materials. Clear and colourless once cured. Must wipe off excess glue before it dries to prevent glue stain. Not gap filling so there should be no gaps between the wood
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Synthetic Glue - Normal polyurethane. Dries hard and fast. Often expands as it dries which can help to fill in gaps and cracks. For a range of materials. Waterproof & difficult to move
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Contact adhesive - Contact adhesive works when both material surfaces are coated & become touch dry. Adhesion works as soon as the two dry surfaces meet. Contact adhesives solvent fumes are really dangerous & good. Ventilation is imperative. Used to join flexible and sheet materials
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Epoxy resin - Comes in two tubes - resin and the hardener. They need to be mixed in equal parts. You can get epoxy resin with different drying time depending on the size of what is being glued. Epoxy resin fills gaps and joins a variety of materials. Good to use when different materials are joined eg. glass to steel
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