| 摘要 |
<p>The invention relates to self-adhesive, addition cross-linking silicone--rubber blends, to a method for their production, in addition to a method for producing composite moulded parts, using the blends. The blends contain a) at least one linear or branched organopolysiloxane with at least two alkenyl groups with a viscosity of 0.01 to 30,000 Pa.cndot.s, b1) at least one organohydrogen siloxane with at least two SiH units per molecule and a content of more than 7 mmol SiH/g that contains no aromatic groups, b2) at least one organohydrogen siloxane with at least two SiH units per molecule and at least one aromatic group is contained in the molecule, b3) optionally at least one organohydrogen siloxane with at least two SiH units per molecule and a content of less than 7 mmol SiH/g that contains no aromatic groups, c) at least one Pt, Ru and/or Rh catalyst, d) at least one alkoxysilane and/or alkoxysiloxane, each of which has at least one epoxy group, e) optionally at least one inhibitor, f) optionally at least one filler, optionally surface-modified, and g) optionally at least one additive, whereby the molar ratio of the entire quantity of the SiH groups to the total quantity of Si-bound alkyl groups of all components in the mixture is at least 0.7. The blends have good adhesion to substrates without the necessity of special handling for the molds used for producing the molded parts, which makes possible release of the addition cross-linked silicone-rubber blends from the mold. In addition, generally no subsequent curing of the composite molded parts is necessary.</p> |
