摘要
Abstract
Calcined coal gangue was used to modify polyoxymethylene (POM), which not only toughened POM, but also developed a new application of coal gangue. Suitable conditions were determined experimentally as follows: the coal gangue was pestled to 38μm, then calcined at 800℃, mixed with silane coupling agent KH-550 solution (mKH-550:mEtOH:mH2O=20:72:8) in a dosage of 0.5% based on coal gangue mass, and dried at 120℃, then the dried coal gangue was mixed with POM in a mass ratio of the dried coal gangue to POM of 20%. Tensile strength and notch impact strength were tested by universal tensile testing machine and the Izod notched impact strength testing machine, respectively. The results showed that coal gangue could toughen POM, and the tensile strength and notch impact strength of POM processed under the optimum conditions reached 46MPa and 86J/m, respectively.关键词
煤矸石/聚甲醛/改性/韧性Key words
coal gangue/polyoxymethylene(POM)/modification/toughness分类
化学化工
