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GRP – practically no longer related to plastic

Glass fibre reinforce plastics (GRP) are primarily distinguished from their matrix components by considerably improved resistance to pressure, bending, traction and impacting. They are also electrical insulators characterised by a high chemical resistance. However, unlike carbon fibre reinforced plastics (CFRP), they have a noticeably lower rigidity and considerably higher density. CFRP are mainly used in boat and glider construction, as cladding in automobile manufacturing and as pipe lines and tanks in the chemical industry and plant engineering where, in addition to their insulating properties and chemical resistance, their enormous toughness at very low temperatures is important. Both thermoplastics (e.g. polyamides, polystyrenes or polyolefins) and duroplastics (e.g. melamine, phenol, epoxide and silicone resins) are used as matrix plastics. Glass fibres are added to these original materials. These are mainly available in the form of semi-finished products (tissues, layers, prepregs) that are primarily made into boards, profile parts and pipes by employing methods such as autoclaving, winding, manual laminating, resin injection or similar.

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