PROCESS FOR INCREASING THE ADHESION OF A REINFORCING INORGANIC MATERIAL IN A POLYMERIC MATRIX, A REINFORCING INORGANIC MATERIAL, A PROCESS FOR OBTAINING A THERMOPLASTIC COMPOSITE MATERIAL, A THERMOPLASTIC COMPOSITE MATERIAL, AND A THERMOPLASTIC COMPOSITE ARTICLE

摘要

Process for increasing the adhesion of a reinforcing inorganic material in an organic matrix: includes subjecting a dry load of particulate or fibrous reinforcing inorganic material presenting hydroxyls in its surface, to a first surface treatment with a coupling agent of the siloxane type containing amine groups, dissolved in an organic solvent free of water and with an acid pH and, after a curing step, to a new surface treatment with a coupling agent of the siloxane type dissolved in a solution containing an organic solvent and water, to be subjected to a new curing step. The reinforcement material may be mixed to a load of organic material defined by a polymer or by a monomer, to obtain a composite mixture to form a composite polymeric material which may present the desired final form or a raw form, to be ground or pelletized into a particulate form for posterior processing.