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Preparation method of near infrared wave-absorbing material potassium copper phosphate

A wave-absorbing material, copper potassium phosphate technology, applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems of inability to develop near-infrared wave-absorbing performance, low temperature resistance and chemical corrosion resistance, complex synthesis process, etc. problems, to achieve the effect of short cycle, low equipment requirements and high purity

Inactive Publication Date: 2017-03-15
JIAXING ZHONGYI CARBON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional near-infrared absorbing materials are mostly organometallic complexes, polyacetylene and coordination polymers. The synthesis process is complex and the temperature resistance and chemical corrosion resistance are very low, and the life cycle is short. Inorganic materials are compared with organic complexes. It has good physical properties with polymers, so whether it is possible to develop an inorganic material with good near-infrared absorbing properties has become a very good topic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A, 42% ammonium dihydrogen phosphate, 21% potassium carbonate, and 37% copper nitrate are mixed by weight percentage and then moved into a planetary ball mill to grind at a low speed at 150 RPM;

[0017] B. Transfer the powder obtained by grinding in step A into a corundum crucible, and then put it into a tube electric furnace. Before the reaction, the protective gas nitrogen is passed through the furnace to remove the air, and then the temperature is raised in a nitrogen-protected environment to carry out the solid-phase reaction. The first gradient temperature of the solid-phase reaction is 300 ° C, and the reaction time is 30 hours. The second gradient of the solid-phase reaction The temperature is 680°C, and the reaction time is 12 hours;

[0018] C. Grind the material obtained after the reaction in step B again, wash with water to remove impurities, filter, and dry at 80°C for 12 hours to obtain the target near-infrared absorbing material copper potassium phosphate...

Embodiment 2

[0025] A, after mixing 43% diammonium hydrogen phosphate, 39% potassium hydroxide, and 18% copper oxide by weight percentage, move them into a planetary ball mill and grind at a low speed at 200 RPM;

[0026] B. Transfer the powder obtained by grinding in step A into a corundum crucible, and then put it into a tube electric furnace. Before the reaction, the inert gas argon is passed through the furnace to remove the air, and then the temperature is raised in an argon-protected environment for solid-phase reaction. The first gradient temperature of the solid-phase reaction is 400 ° C, and the reaction time is 24 hours. The second step of the solid-phase reaction The gradient temperature is 600°C, and the reaction time is 15 hours;

[0027] C. Grind the material obtained after the reaction in step B again, wash with water to remove impurities, filter, and dry at 60°C for 24 hours to obtain the target near-infrared absorbing material copper potassium phosphate.

Embodiment 3

[0029] A, after mixing 50% ammonium phosphate, 34% potassium nitrate, and 16% copper carbonate by weight percentage, move into the planetary ball mill and grind at a low speed at 250 RPM;

[0030] B. Transfer the powder obtained by grinding in step A into a corundum crucible, and then put it into a tube electric furnace. Before the reaction, the inert gas helium was passed through the furnace to remove the air, and then the temperature was raised in a helium-protected environment to carry out the solid-phase reaction. The first gradient temperature of the solid-phase reaction was 350°C, and the reaction time was 25 hours. The second step of the solid-phase reaction The gradient temperature is 650°C, and the reaction time is 13 hours;

[0031] C. Grind the material obtained after the reaction in step B again, wash with water to remove impurities, filter, and dry at 70°C for 15 hours to obtain the target near-infrared absorbing material copper potassium phosphate.

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Abstract

The invention discloses a preparation method of a near infrared wave-absorbing material potassium copper phosphate. The preparation method comprises the following steps: A, mixing the following raw materials in percentage by weight: 42-63% of ammonium phosphate, 17-39% of potassium salt and 16-37% of copper salt, then transferring into a planetary ball mill, and performing low-speed grinding at 150-250RPM; B, transferring the ground powder obtained the step A into a corundum crucible, and raising the temperature in a nitrogen gas or inert gas protective atmosphere to perform solid-phase reaction, wherein the first gradient temperature of the solid-phase reaction is 300-400 DEG C with the reaction time of 24-30 hours, and the second gradient temperature of the solid-phase reaction is 600-680 DEG C with the reaction time of 12-15 hours; and C, further grinding the substance obtained after the reaction in the step B, washing with water to remove impurities, filtering, and drying to obtain the target product near infrared wave-absorbing material potassium copper phosphate.

Description

technical field [0001] The invention relates to a method for preparing an optical material, in particular to a method for preparing a near-infrared absorbing material, copper potassium phosphate, which has a strong absorption property in the near-infrared band. Background technique [0002] Nearly half of the radiant energy in sunlight is distributed in the near-infrared region. Usually, the radiant energy in the near-infrared region cannot be effectively used, such as the photosynthesis of vegetation, and this part of the radiant energy is defined as harmful, because these energies are what make the earth Environmental warming is one of the main factors causing the greenhouse effect. However, these problems can be effectively solved by developing a material that only absorbs or reflects wavelengths in the near-infrared region. Traditional near-infrared absorbing materials are mostly organometallic complexes, polyacetylene and coordination polymers. The synthesis process is...

Claims

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Application Information

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IPC IPC(8): C01B25/45
CPCC01B25/45C01P2006/60C01P2006/80
Inventor 王乾龙李平
Owner JIAXING ZHONGYI CARBON TECH
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