發(fā)布時間：2018-06-24 17:00

  本文選題：高爐渣纖維 + 管道保溫��； 參考：《華北理工大學》2015年碩士論文

【摘要】：利用液態(tài)高爐渣直接氣淬纖維化的高爐渣纖維,通過配加具有較好粘結(jié)性能的粘結(jié)劑,可加工成具有保溫性能的工業(yè)保溫材料,如管道保溫材料。保溫材料的制備和使用在節(jié)約能源的同時還可以減小環(huán)境負擔,具有重要意義。采用掃描電子顯微鏡分析了高爐渣纖維直徑、渣球含量及化學穩(wěn)定性能。結(jié)果表明,高爐渣纖維表面呈光滑圓柱狀,渣球含量較低,纖維直徑6.8μm左右,纖維耐酸性能稍差,但在堿性溶液中具有較好的化學穩(wěn)定性。采用聚乙烯醇和聚乙烯醇縮丁醛為粘結(jié)劑進行管道保溫材料的制備實驗,研究了粘結(jié)劑濃度、固化溫度等因素對管道保溫材料容重、抗壓強度和吸濕率的影響規(guī)律,結(jié)果表明,管道保溫材料的容重、抗壓強度、吸濕率均隨粘結(jié)劑濃度的增大而增大;管道保溫材料的容重隨固化溫度的升高呈現(xiàn)先減小后增大趨勢;保溫材料的抗壓強度隨固化溫度的升高呈先升高后降低趨勢。通過以上影響規(guī)律得出,以聚乙烯醇為粘結(jié)劑的保溫材料固化溫度為140℃,粘結(jié)劑濃度為3%時具有較低的容重及較高的抗壓強度,導熱系數(shù)為0.0284W/(m·K)。采用聚乙烯醇縮丁醛為粘結(jié)劑的保溫材料粘結(jié)劑濃度為4%,固化溫度為120℃時制備的保溫材料,容重及吸濕率較低,導熱系數(shù)為0.0206W/(m·K),符合保溫材料的要求。
[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，

本文編號：2062299