The Study On Build Up Strength And Toughness In The Resin Matrix Composite Material Filled With Nonmetal Mineral Filler FSMF

Strength and toughness are two main mechanics properties to the composite materials. Improve the strength and toughness of the resin matrix composite materials is always the important subject of material sciences research.A full-scale review of the nonmetal mineral filler to improve the strength and toughness of the resin matrix materials in the domestic and overseas is presented. Based on the theory and experiment, the mechanism of the FSMF filler to build up the strength and toughness in the resin matrix composite materials is studied; The relation of the mechanical property of the resin cast and the content of the FSMF is obtained; The elasticity modulus of the FSMF powder is estimated by analysis method and CMM method; In the end, FSMF used in RPMP is discussed.Follow results are obtained.(1) The mechanism of the FSMF filler to build up the strength and toughness in the resin matrix composite materials is studied.In the resin matrix composite materials filled with FSMF, the load is undertaken by the grain of FSMF and the resin matrix. The grain of FSMF restricts the deformation of the resin matrix, so the strength is improved. Furthermore, the grain of FSMF can consume the energy of strain and controls the crack expand, so build up toughness.The factors which effect the FSMF filler to build up strength and toughness in the resin matrix composite materials include the size and the shape of FSMF grain the glue performance on the Interface of resin matrix and the grain of FSMF. In order to obtain well effect on the improve the strength and toughness, the interface on the grain and theresin matrix should have a good glue performance; the diameter of the grain should be small and the shape component of grain patch and fiber should be suitability.(2)The tensile, bend and impact ductility experiment of the resin cast with FSMF filler are employed.The results show that FSMF can improve the bend modulus of the resin cast clearly, but reduce the tensile strength. In the suitable content of filler (not more than 30% in this experiment), FSMF can improve the tensile modulus and bend strength. In the suitable content of filler (20%~30% in this experiment), FSMF can improve the toughness of the resin cast. So in the suitable situation and use a suitable content, FSMF filler have a good effect to improve the strength and toughness.(3)The elasticity modulus of the FSMF powder is estimated. The analysis method and CMM method are used to estimate the elasticity modulus of the FSMF powder. That offers a valuable reference to evaluate and apply the mineral composite filler.(4) The FSMF used in RPMP is discussed. The results of the experiment are as follows: The bend strength, bend modulus, stiffness and toughness of the mortar layer will be improved when add 30% FSMF to resin. The axis tensile strength, stiffness, hardness and weariessness of winding layer will be improved when add 25%~30% FSMF to resin. So added the FSMF to mortar layer and winding layer of the RPMP will improve the mechanical property and lower the cost.