Porous near-infrared reflective insulation material and preparation method thereof
A thermal insulation material and near-infrared technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as insufficient thermal insulation performance, and achieve comprehensive thermal insulation performance, good near-infrared reflection performance, The effect of low thermal conductivity
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[0035] In order to facilitate those skilled in the art to further understand the present invention, the following examples are prepared according to the same preparation method.
[0036] The raw materials used in each embodiment are all commercially available.
[0037] Preparation:
[0038] First, weigh Zn(NO 3 ) 2 ·6H 2 O and Ni(NO 3 ) 2 ·6H 2 Dissolve O in an appropriate amount of deionized water, stir at room temperature, transfer the solution to a three-necked flask, heat it in a water bath at 70°C, measure a certain amount of phosphoric acid with a concentration of 85%, and slowly drop it into the three-necked flask, stir, and react for 1h , pour the mixed solution into a beaker, slowly add 2mol / L Na 2 CO 3 solution, stirring while adding dropwise, adjusting the pH value to 7, standing still, precipitation, suction filtration, washing twice with deionized water and once with absolute ethanol, and drying the filter cake in an oven at 70°C for 6h to obtain Precurso...
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