| 摘要 |
The invention relates to a compound for the production of a composite body, comprising: a hard component (a) of a polyacetal, namely polyoxymethylene (POM) and a soft component (b) of one or more thermoplastic styrene elastome rs (TPE), namely hydrogenated styrene block copolymer(s), which is moulded directly on to component (a). In the prior art the inadequate adhesion for some intended uses has manifested itself as a disadvantage of such a choice of materials for the components. The invention provides a remedy for this in th at the styrene block copolymer(s) are poly-isoprene/butadiene polymer(s) (SEEPS ) and/or poly-isoprene polymer(s) (SEPS) and/or poly-butadiene polymer(s) (SEBS), and in that the styrene block copolymer(s) are adhesion-modified, wherein styrene/butadiene copolymer (SBS) and/or ethylene/vinyl acetate copolymer (EVA) and/or olefinic materials, such as PE, PP, polystyrene (PS) are added as modifiers of th styrene block copolymer(s). One or more of the following substances are additionally added as modifiers of the polyoxymethylene: styrene/butadiene copolymer (SBS); ethylene/vinyl acetate copolymer (EVA); hydrogenated styrene block copolymer based on a hydrogenate d poly-isoprene/butadiene rubber (SEEPS); hydrogenated styrene block copolymer based on a hydrogenated poly-isoprene rubber (SEPS); hydrogenated styrene block copolymer based on a hydrogenated poly-butadiene rubber (SEBS); compou nd based on a hydrogenated styrene block copolymer which can be present as hydrogenated poly-isoprene/butadiene rubber or as hydrogenated poly-isoprene rubber (SEPS) or as hydrogenated poly-butadiene rubber (SEBS); olefinic substances, such as PE, PP; polystyrene (PS), ABS, PC, SAN, TPE-U. The composite body according to the invention has excellent adhesion and sealing properties and can therefore be employed for a large number of intended uses in motor vehicle construction etc.
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