Improved control type magnetic therapy machine
A component and body technology, which is applied in the field of improved control-type magnetic therapy machines, can solve the problems of reducing observation and display components, inconvenience, etc., and achieve the effects of high magnetic performance, enhanced practicability, and improved practicability and reliability.
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Embodiment 1
[0048] A method for preparing a flexible bonded NdFeB magnet, comprising the following steps:
[0049] 1) Mix a volume of 2L of rubidium chloride aqueous solution with a concentration of 0.3M (M, ie mol / L, the same below) and a volume of 4L with a concentration of 0.5M ferrous sulfate solution to obtain mixed solution A; then mix mixed solution A The pH is adjusted to 1.5;
[0050] 2) In a nitrogen atmosphere, at a temperature of 5°C, slowly add 10L of sodium borohydride aqueous solution with a concentration of 3M to the mixed solution A after adjusting the pH, wash with water to obtain a black precipitate, and place the black precipitate on Sintering at 500°C to obtain quick-quenched NdFeB magnetic powder with an average particle size of 75 mesh;
[0051] 3) Dry 2 parts of nano-alumina powder at 60°C, then put the dried nano-alumina powder into an ethanol solution, stir to obtain a suspension of nano-alumina powder, and then add 1 part of titanate coupling The agent is stir...
Embodiment 2
[0054] A method for preparing a flexible bonded NdFeB magnet, comprising the following steps:
[0055] 1) Mix a rubidium chloride aqueous solution with a volume of 2L and a concentration of 1.5M with a volume of 12L of a ferrous sulfate aqueous solution with a concentration of 1.5M to obtain a mixed solution A; then adjust the pH of the mixed solution A to 2.5;
[0056] 2) In a nitrogen atmosphere, at a temperature of 15°C, slowly add 18L of sodium borohydride aqueous solution with a concentration of 4M to the mixed solution A after adjusting the pH, wash with water to obtain a black precipitate, and place the black precipitate on Sintering at 750°C to obtain quick-quenched NdFeB magnetic powder with an average particle size of 250 mesh;
[0057] 3) Dry 2 parts of nano-alumina powder at 90°C, then put the dried nano-alumina powder into an ethanol solution, stir to obtain a suspension of nano-alumina powder, and then add 5 parts of titanate coupling The agent is stirred and dr...
Embodiment 3
[0060] A method for preparing a flexible bonded NdFeB magnet, comprising the following steps:
[0061] 1) Mix a rubidium chloride aqueous solution with a volume of 2L and a concentration of 1.5M with a volume of 10L of a ferrous sulfate aqueous solution with a concentration of 1.5M to obtain a mixed solution A; then adjust the pH of the mixed solution A to 2.0;
[0062] 2) In a nitrogen atmosphere, at a temperature of 10°C, slowly add 14L of sodium borohydride aqueous solution with a concentration of 3M to the mixed solution A after adjusting the pH, wash with water to obtain a black precipitate, and place the black precipitate on Sintering at 650°C to obtain quick-quenched NdFeB magnetic powder with an average particle size of 120 mesh;
[0063] 3) Dry 2 parts of nano-alumina powder at 80°C, then put the dried nano-alumina powder into an ethanol solution, stir to obtain a suspension of nano-alumina powder, and then add 5 parts of titanate coupling The agent is stirred and dr...
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