| abstract |
A composite of a resin member bonded to a vulcanizednrubber member is obtained with using a rubber membernvulcanized with a radical-generating agent (e.g., annorganic peroxide) and a thermoplastic resin having at leastn2 atoms, on average, selected from H and S atom per molecule,neach atom having not less than 0.006 of an orbitalninteraction energy coefficient S represented by thenfollowing formula (1):n S=(C HOMO,n ) 2 / E C -E HOMO,n +(C LUMO,n ) 2 / E C -E LUMO,n nwherein E C :an orbital energy (eV) of a radical, C HOMO,n :anmolecular-orbital coefficient of a highest occupiednmolecular orbital (HOMO) of an n-th H or S atom constitutingna basic unit of the resin, E HOMO,n :an orbital energy (eV)nof the HOMO, C LUMO,n :a molecular-orbital coefficient of anlowest unoccupied molecular orbital (LUMO) of the n-th Hnor S atom constituting the basic unit of the resin, E LUMO,n :nan orbital energy (eV) of the LUMO, and above all representna value calculated by a semiempirical molecular orbitalnmethod MOPACPM3. The thermoplastic resin includes anpolyamide, a polyester, a PPE, a POM, a PPS, a polyolefinicnresins, and the unvulcanized rubber may comprise anvulcanization-activating having plural polymerizablenunsaturated bonds. The invention gives the composite ofnthe resin bonded directly to the rubber firmly withoutnadhesives in wide combinations of the resin and the rubber. |