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Heat-insulating refractory material and preparation method thereof
The invention discloses a heat-insulating refractory material and a preparation method thereof. Mullite and yttrium aluminum garnet fibers are used as refractory raw materials, and aluminum chloride hexahydrate, 4-hydroxy-3-methoxy benzyl alcohol and modified starch are used as binding agents; the modified starch is prepared through ultrasonic treatment; the vacuum porosity of the heat-insulatingrefractory material is not lower than 81%, the compressive strength is higher than 12.2 MPa, and the heat conductivity coefficient is less than 0.26 W.m <-1>.K<-1>. The preparation method comprises the steps of mixing the inorganic minerals with the ceramic fibers, ball-milling and drying to obtain a mixed dry material; mixing the dry material with a binding agent to obtain a blank; pressing and molding the blank, and drying the blank in a drying oven to obtain a green body; and putting the green body into a high-temperature furnace for heat treatment, and cooling to obtain the heat-insulatingrefractory material. The heat-insulating refractory material has excellent thermal shock stability and compressive strength, high porosity, low volume density and low heat conductivity coefficient.
本发明公开了一种隔热耐火材料及其制备方法，以莫来石、钇铝石榴石纤维为耐火原料，六水合氯化铝、4‑羟基‑3‑甲氧基苄醇与改性淀粉作为结合剂；改性淀粉经超声波处理制得；隔热耐火材料的真气孔率不低于81％、耐压强度高于12.2MPa和导热系数小于0.26W·m‑1·k‑1。其制备方法为：将无机矿物与陶瓷纤维混合，球磨，干燥，得到混合干料；然后将干料与结合剂混合，得到坯料；将坯料压制成型，置于烘箱中烘干，得到生坯；将生坯置于高温炉中热处理，冷却，得到隔热耐火材料。该隔热耐火材料具有优异的热震稳定性与耐压强度，较高的气孔率、低体积密度与低导热系数。
Heat-insulating refractory material and preparation method thereof
The invention discloses a heat-insulating refractory material and a preparation method thereof. Mullite and yttrium aluminum garnet fibers are used as refractory raw materials, and aluminum chloride hexahydrate, 4-hydroxy-3-methoxy benzyl alcohol and modified starch are used as binding agents; the modified starch is prepared through ultrasonic treatment; the vacuum porosity of the heat-insulatingrefractory material is not lower than 81%, the compressive strength is higher than 12.2 MPa, and the heat conductivity coefficient is less than 0.26 W.m <-1>.K<-1>. The preparation method comprises the steps of mixing the inorganic minerals with the ceramic fibers, ball-milling and drying to obtain a mixed dry material; mixing the dry material with a binding agent to obtain a blank; pressing and molding the blank, and drying the blank in a drying oven to obtain a green body; and putting the green body into a high-temperature furnace for heat treatment, and cooling to obtain the heat-insulatingrefractory material. The heat-insulating refractory material has excellent thermal shock stability and compressive strength, high porosity, low volume density and low heat conductivity coefficient.
本发明公开了一种隔热耐火材料及其制备方法，以莫来石、钇铝石榴石纤维为耐火原料，六水合氯化铝、4‑羟基‑3‑甲氧基苄醇与改性淀粉作为结合剂；改性淀粉经超声波处理制得；隔热耐火材料的真气孔率不低于81％、耐压强度高于12.2MPa和导热系数小于0.26W·m‑1·k‑1。其制备方法为：将无机矿物与陶瓷纤维混合，球磨，干燥，得到混合干料；然后将干料与结合剂混合，得到坯料；将坯料压制成型，置于烘箱中烘干，得到生坯；将生坯置于高温炉中热处理，冷却，得到隔热耐火材料。该隔热耐火材料具有优异的热震稳定性与耐压强度，较高的气孔率、低体积密度与低导热系数。
Heat-insulating refractory material and preparation method thereof
隔热耐火材料及其制备方法
2021-01-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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