Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Nano thermal insulation material and preparation method thereof
The invention relates to a nano thermal insulation material and a preparation method thereof. According to the technical scheme, the preparation method comprises the following steps: mixing 53 to 66 weight percent of nano aluminum oxide, 11 to 18 weight percent of nano silicon dioxide, 12 to 17 weight percent of silicon carbide, 1 to 3 weight percent of glass fiber, 3 to 7 weight percent of ammonium dihydrogen phosphate and 3 to 7 weight percent of aluminum dihydrogen phosphate, ball-milling, and drying so as to obtain nano thermal insulation material powder; carrying out mechanical pressing molding on the nano thermal insulation material powder under the condition of 0.2-1.0 MPa, and drying; and then preserving heat for 1-3 hours under the condition of 1000-1200 DEG C, and naturally cooling to obtain the nano thermal insulation material. The material has the characteristics of low synthesis temperature, simple process flow, simplicity and convenience in operation and low cost; The prepared nano thermal insulation material is small in volume density, large in apparent porosity, large in compression strength and low in normal-temperature heat conductivity coefficient.
本发明涉及一种纳米隔热材料及其制备方法。其技术方案是：将53～66wt％的纳米氧化铝、11～18wt％的纳米二氧化硅、12～17wt％的碳化硅、1～3wt％的玻璃纤维、3～7wt％的磷酸二氢铵和3～7wt％的磷酸二氢铝混合，球磨，烘干，制得纳米隔热材料粉体；再将纳米隔热材料粉体于0.2～1.0MPa条件下机压成型，干燥；然后在1000～1200℃条件下保温1～3小时，自然冷却，制得纳米隔热材料。本发明具有合成温度低、工艺流程简单和操作简便和成本低的特点；所制备的纳米隔热材料体积密度小、显气孔率大、耐压强度大和常温导热系数低。
Nano thermal insulation material and preparation method thereof
The invention relates to a nano thermal insulation material and a preparation method thereof. According to the technical scheme, the preparation method comprises the following steps: mixing 53 to 66 weight percent of nano aluminum oxide, 11 to 18 weight percent of nano silicon dioxide, 12 to 17 weight percent of silicon carbide, 1 to 3 weight percent of glass fiber, 3 to 7 weight percent of ammonium dihydrogen phosphate and 3 to 7 weight percent of aluminum dihydrogen phosphate, ball-milling, and drying so as to obtain nano thermal insulation material powder; carrying out mechanical pressing molding on the nano thermal insulation material powder under the condition of 0.2-1.0 MPa, and drying; and then preserving heat for 1-3 hours under the condition of 1000-1200 DEG C, and naturally cooling to obtain the nano thermal insulation material. The material has the characteristics of low synthesis temperature, simple process flow, simplicity and convenience in operation and low cost; The prepared nano thermal insulation material is small in volume density, large in apparent porosity, large in compression strength and low in normal-temperature heat conductivity coefficient.
本发明涉及一种纳米隔热材料及其制备方法。其技术方案是：将53～66wt％的纳米氧化铝、11～18wt％的纳米二氧化硅、12～17wt％的碳化硅、1～3wt％的玻璃纤维、3～7wt％的磷酸二氢铵和3～7wt％的磷酸二氢铝混合，球磨，烘干，制得纳米隔热材料粉体；再将纳米隔热材料粉体于0.2～1.0MPa条件下机压成型，干燥；然后在1000～1200℃条件下保温1～3小时，自然冷却，制得纳米隔热材料。本发明具有合成温度低、工艺流程简单和操作简便和成本低的特点；所制备的纳米隔热材料体积密度小、显气孔率大、耐压强度大和常温导热系数低。
Nano thermal insulation material and preparation method thereof
一种纳米隔热材料及其制备方法
LI YUANBING (Autor:in) / LIU JINGFEI (Autor:in) / LI SHUJING (Autor:in) / XIANG RUOFEI (Autor:in)
25.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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