METHOD FOR PRODUCTION OF REINFORCED POLYMERIC COMPOSITE MATERIAL Russian patent published in 2002 - IPC

FIELD: production of polymeric composite materials based on cross-linked polymers reinforced by chemical fibers. SUBSTANCE: the method for production of reinforced polymeric composite material based on aniline-phenolic-formaldehyde binder consists in impregnation of a unidirectional commercial thread by oligomeric binder, molding, after-hardening and magnetic treatment in a static magnetic field in the stage of hardening. Then, the efficiency in influence of process parameter X on the strength properties of the reinforced polymeric composite material is estimated on the basis of tubular comparison of the obtained values of breaking stress at static bending σ_b and impact elasticity α_imp. Magnetic treatment is carried in a static magnetic field with a magnetic induction within 0.02 to 0.07 T during 6 hors, and the efficiency of influence of process parameter X on the strength characteristics of the reinforced polymeric composite material is estimated by formula: , where X-any process parameter (t⁰, c-temperature, B,T - magnetic induction, etc.), - mean value of the strength characteristic of the reinforced polymeric composite material (σ_b, α_imp, etc.), - absolute value of strength characteristic Y at X=0 being fit per unit of Y (dimensionless value of the characteristic at X=0), - specific relative contribution of process parameter X to the value of the strength characteristic of the reinforced polymeric composite material. EFFECT: enhanced strength characteristics exceeding those of the materials obtained by the mixing method.