Production of thermoset material, e.g. for sports goods or cars, involves combining a mixture of epoxy resin and rheology regulator with a mixture of hardener and rheology regulator and processing the semi-finished product

摘要

Thermoset materials and objects are obtained by making a formulation (A) containing an epoxide prepolymer and a rheology regulator (I), making a formulation (B) containing a hardener and (I), combining (A) and (B) to form a semi-finished product, forming to the required shape and reacting the combination, e.g. by thermoforming. A method for the production of thermoset materials and objects (T) involves (a) preparation of a formulation (A) containing 10-99 wt% epoxide prepolymer and 1-90 wt% rheology regulator(s) (I), (b) preparation of a formulation (B) containing 1-90 wt% hardener(s) and 10-99 wt% (I) (not necessarily the same regulator), (c) making a semi-finished product by simultaneous treatment of (A) and (B) depending on the nature of the required products, with due regard if necessary to the stoichiometry between prepolymer and hardener and including (as required) fibres, mats, fabric or other materials used in composites, (d) forming the required structure by conventional methods, e.g. drape forming, moulding or sandwich production and (e) reacting the formulation to give a composite by a conventional method such as thermoforming. Independent claims are also included for the following: (1) woven and knitted fabric made by a co-weaving process (stage c); (2) thermoset objects and materials made by co-extrusion or by impregnation with a powder mixture (stage c).