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不同化学激发剂对CFB超细粉煤灰基喷涂材料的影响 被引量:1

Influence of Different Chemical Activators on CFB Ultrafine Fly Ash based Spraying Materials
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摘要 煤矿井下壁面封堵材料有效的防止瓦斯气体的逸出,通过以苯丙乳液、CFB粉煤灰、水泥为原料,试验对比分析了CaCl_2与NaCl两种不同的化学激发剂对CFB粉煤灰活化的效果,考察了化学激发对喷涂材料的表观性能、粘结强度、吸水率的影响及活化机理的分析,制备了一种CFB超细粉煤灰基喷涂材料,并对其喷涂材料应用于煤矿井下的阻燃性和抗静电性加以分析。研究结果表明添加CaCl_2与NaCl化学激发剂对涂层的表观性能影响不大,粘结强度相比未添加激发剂的涂层均有所增加,尤其添加CaCl_2的涂层显著增加。并通过XRD和SEM分析添加激发剂涂层生成了更多的水化硅酸钙,更加的致密,说明激发剂提高了粉煤灰的活性,促进了体系的水化反应。 The wall sealing material in coal mine effectively prevents gas from escaping.By using styrene acrylic emulsion,CFB fly ash,cement as raw materials,the effect of two different chemical activators of CaCl2 and NaCl on the activation of CFB fly ash is compared and analyzed,and the apparent properties and bond strength of chemical excitation on the spraying materials are investigated.The effect of degree and water absorption and the mechanism of activation are analyzed.A kind of CFB superfine fly ash base spraying material is prepared.The flame retardancy and antistatic property of the material used in coal mine are analyzed.The results show that the addition of CaCl2 and NaCl chemical activator has little effect on the apparent properties of the coating,and the adhesive strength increases as compared with the coating without activator,especially the coating added with CaCl2.The addition of activator coating by XRD and SEM analysis produces more hydrated calcium silicate,which is more compact,indicating that the activator improves the activity of the fly ash and promotes the hydration reaction of the system.
作者 雷旭 宋慧平 李浩宇 薛芳斌 程芳琴 Lei Xu;Song Huiping;Li Haoyu;Xue Fangbin;Cheng Fangqin(Institute of Resources and Environmental Engineering Shanxi University,Taiyuan,China China;Low Value-added Coal-based Resources High Utilization Collaborative Innovation Center,Taiyuan,China)
出处 《粉煤灰综合利用》 CAS 2018年第6期13-17,27,共6页 Fly Ash Comprehensive Utilization
基金 国家自然科学基金项目(51874194) 山西省科技重大专项项目(20181101004) 太原市小店区科技项目重点专项(201804-145)
关键词 激发剂 CFB粉煤灰 喷涂材料 粘结强度 吸水率 activator CFB fly ash spraying material bond strength water absorption rate
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