Preparation method and application of bionic porous interface black body material
A black body, interface technology, applied in the preparation/purification of carbon, chemical instruments and methods, general water supply saving, etc., can solve the problems of reduced overall efficiency, improved thermal conductivity, weak hydrophilicity, etc. The effect of reducing thermal conductivity and reducing thermal conductivity
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[0077] The invention provides a kind of preparation method of porous black body material, comprises the following steps:
[0078] 1) After mixing the melamine sponge and the flame retardant solution with heat, the passivated melamine sponge is obtained;
[0079] 2) Under a protective atmosphere, heat-treat the passivated melamine sponge obtained in the above steps to obtain a porous blackbody material.
[0080] In the invention, firstly, the melamine sponge and the flame retardant solution are heated and mixed to obtain the passivated melamine sponge.
[0081] In the present invention, the flame retardant preferably includes ammonium dihydrogen phosphate.
[0082] In the present invention, the concentration of the flame retardant solution is preferably 0.1-100mmol / L, more preferably 1-80mmol / L, more preferably 10-60mmol / L, more preferably 30-40mmol / L.
[0083] In the present invention, the melamine sponge preferably includes washed melamine sponge.
[0084] In the present i...
Embodiment
[0111] A 5cm*5cm*10cm melamine sponge (MS) was ultrasonically cleaned three times with ethanol and deionized water, and then dried in an oven at 60°C for 10h. Immerse the cleaned MS into 0.001mol L -1 NH 4 h 2 PO 4 And placed in an oven at 80°C for 24 hours to phosphorylate the amino groups on the surface. The now cooled and dried sample was designated Phosphate Sponge (AMS). Subsequently, the AMS was heated at 10 °C min in a nitrogen atmosphere -1 Heated at 800°C for 5 minutes at the heating rate to obtain the pyrolyzed AMS, that is, the black body material, which is recorded as biomimetic porous interface black body material (TAMS).
[0112] In addition, MS is directly pyrolyzed under the same conditions to obtain a pyrolytic sponge, which is designated as pyrolytic sponge (TMS).
[0113] see figure 2 , figure 2 The physical picture of the sample prepared in the embodiment of the present invention. Among them, from left to right are melamine sponge (MS), phosphati...
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