摘要
将煤矸石煅烧处理,并将之填加进聚甲醛树脂中,以改进聚甲醛树脂的韧性,既改善了聚甲醛树脂的力学性能,又拓宽了煤矸石的利用途径。实验确定适宜的煤矸石改性聚甲醛工艺条件为:煤矸石研磨粒度为38μm,煅烧温度为800℃,加入煤矸石质量0.5%的硅烷偶联剂KH-550溶液(mKH-550:m乙醇:m水=20:72:8),烘干温度为120℃,煤矸石加入量为聚甲醛树脂质量的20%。通过拉力试验机和悬臂梁缺口冲击强度试验机对聚甲醛树脂的抗拉强度和缺口冲击强度进行了测定,结果表明,煤矸石颗粒的加入可以改善聚甲醛树脂的韧性,在优化的工艺条件下,聚甲醛树脂的拉伸强度为46MPa,缺口冲击强度为86J/m。
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.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2014年第6期21-24,共4页
Natural Gas Chemical Industry
关键词
煤矸石
聚甲醛
改性
韧性
coal gangue
polyoxymethylene（POM）
modification
toughness
