矿棉管道保温材料制备及性能优化

发布时间：2018-06-24 17:00

  本文选题：高炉渣纤维 + 管道保温　； 参考：《华北理工大学》2015年硕士论文

【摘要】：利用液态高炉渣直接气淬纤维化的高炉渣纤维,通过配加具有较好粘结性能的粘结剂,可加工成具有保温性能的工业保温材料,如管道保温材料。保温材料的制备和使用在节约能源的同时还可以减小环境负担,具有重要意义。采用扫描电子显微镜分析了高炉渣纤维直径、渣球含量及化学稳定性能。结果表明,高炉渣纤维表面呈光滑圆柱状,渣球含量较低,纤维直径6.8μm左右,纤维耐酸性能稍差,但在碱性溶液中具有较好的化学稳定性。采用聚乙烯醇和聚乙烯醇缩丁醛为粘结剂进行管道保温材料的制备实验,研究了粘结剂浓度、固化温度等因素对管道保温材料容重、抗压强度和吸湿率的影响规律,结果表明,管道保温材料的容重、抗压强度、吸湿率均随粘结剂浓度的增大而增大;管道保温材料的容重随固化温度的升高呈现先减小后增大趋势;保温材料的抗压强度随固化温度的升高呈先升高后降低趋势。通过以上影响规律得出,以聚乙烯醇为粘结剂的保温材料固化温度为140℃,粘结剂浓度为3%时具有较低的容重及较高的抗压强度,导热系数为0.0284W/(m·K)。采用聚乙烯醇缩丁醛为粘结剂的保温材料粘结剂浓度为4%,固化温度为120℃时制备的保温材料,容重及吸湿率较低,导热系数为0.0206W/(m·K),符合保温材料的要求。
[Abstract]:The industrial thermal insulation material, such as pipe insulation material, can be produced by adding binder with good bonding property by using the liquid blast furnace slag fiber with direct gas quenching and fibrosis. The preparation and use of thermal insulation materials can reduce the environmental burden while saving energy, so it is of great significance. The fiber diameter, slag ball content and chemical stability of blast furnace slag were analyzed by scanning electron microscope (SEM). The results show that the fiber surface of blast furnace slag is smooth and cylindrical, the content of slag ball is low, the diameter of fiber is about 6.8 渭 m, the acid resistance of the fiber is a little poor, but it has good chemical stability in alkaline solution. Polyvinyl alcohol (PVA) and polyvinyl butyral (PVA) were used as binders to prepare pipe insulation materials. The effects of binder concentration, curing temperature and other factors on bulk density, compressive strength and moisture absorption rate of heat preservation materials were studied. The bulk density, compressive strength and moisture absorption rate of heat preservation materials increase with the increase of binder concentration, and the bulk density of heat preservation materials decreases first and then increases with the increase of curing temperature. The compressive strength of the insulating material increased first and then decreased with the increase of curing temperature. The results show that the curing temperature is 140 鈩，

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