Research on hot-press processing of friction material based on phenolic resin reinforced with mineral fiber

In order to optimize the hot-press processing of the friction material based on the phenolic resin reinforced with the mineral fiber, the influences of dry-mixing hot-press processing on the properties of the friction material, such as wear property, impact strength and hardness, were researched by using uniform experiments in this paper. The best hot-press processing of the friction material were that hot press was 40 MPa, hot press time was 10 min and hot press temperature was 200℃. The regression relationship of the model pressure, the time of heat preservation, the hot press temperature on the friction coefficient and the impact strength of the friction material were carried out through the optimization using SAS, and then the quadratic curve-surface regression model among the friction coefficient, the impact strength and the parameter of the hot press processing was established. The interaction between hot pressure and hot press temperature was analyzed by using Matlab. The results show that when the temperature was fixed, the friction coefficient decreased with the pressure increasing, and when the pressure was fixed, the friction coefficient increased with the temperature increasing. The impact strength was the largest when hot pressure was 50 MPa and hot press time was 40 min. This study could provide technical reference for the development of high-performance fiction material products.