| abstract |
The invention relates to a method for producing a polyurethane fiber composite, in which (a) di- and/or polyisocyanate, (b) compounds with hydrogen atoms that are reactive towards isocyanate groups, (c) containing at least one carbon-carbonate-carbonate-carbonate double bond, (d) optionally a catalyst that accelerates the urethane reaction, (e) optionally radical initiators, and (f) optionally additional auxiliary agents and additives are mixed to form a reaction mixture with which a fiber material is starved and cured. Compounds with isocyanate-reactive hydrogen atoms on average have at least 1.5 isocyanate-reactive hydrogen groups per molecule; The double bond density of compound (C) is at least 21%; The double bond functionality of compound (c) is greater than 1; Compound (c) does not have groups that are reactive towards isocyanate; and the equivalent ratio of the isocyanate groups of the di- and/or polyisocyanates (a) and the hydrogen atoms that are reactive towards the isocyanate of compound (b) from 0.8 to 2. The invention additionally relates to a composite material of polyurethane fiber obtainable using the method according to the invention and the use of the polyurethane fiber composite material as structural components. (Automatic translation with Google Translate, without legal value) |