Method for preparing ceramic based composite wave absorbing material
A technology of ceramic matrix composite and wave absorbing material is applied in the field of microwave absorbing material preparation technology, which can solve the problems of coal gangue emission and pollution, and achieve the effects of excellent loading effect, simple method and efficient recycling and utilization.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0024] A method for preparing a ceramic-based composite wave-absorbing material, comprising the following steps:
[0025] S1. After the coal gangue is ball-milled, it is sieved through a 300-mesh standard sieve, and the screened coal gangue powder is dried at 80° C. for 4 hours, and the dried coal gangue powder is reserved for later use;
[0026] S2, the preparation concentration is 1.5 mol / L containing Fe 3+ The saline solution is reserved for later use;
[0027] S3. Add the coal gangue powder and sodium hexametaphosphate dried in step S1 into distilled water and stir for 1 hour, then add the salt solution prepared in step S2 into the mixed solution, and continue stirring for 2.5 hours at room temperature to obtain a slurry , the mass ratio of coal gangue powder, sodium hexametaphosphate, distilled water and salt solution in the slurry is 2:0.15:3:4;
[0028] S4. The slurry obtained in step S3 is spray-dried by a spray dryer to obtain a gangue-based composite powder. The wo...
Embodiment 2
[0032] A method for preparing a ceramic-based composite wave-absorbing material, comprising the following steps:
[0033] S1. After the coal gangue is ball milled, it is screened through a 200-mesh standard sieve, and the screened coal gangue powder is dried at 100° C. for 3 hours, and the dried coal gangue powder is reserved for later use;
[0034] S2, the preparation concentration is 1.25 mol / L containing Fe 3+ –Ni 2+ The saline solution is reserved for later use;
[0035] S3. Add the coal gangue powder and sodium hexametaphosphate dried in step S1 into distilled water and stir for 2 hours, then add the salt solution prepared in step S2 into the mixed solution, and continue stirring for 3 hours at room temperature to obtain a slurry , the mass ratio of coal gangue powder, sodium hexametaphosphate, distilled water and salt solution in the slurry is 2:0.15:3:5;
[0036] S4. The slurry obtained in step S3 is spray-dried by a spray dryer to obtain a gangue-based composite pow...
Embodiment 3
[0040] A method for preparing a ceramic-based composite wave-absorbing material, comprising the following steps:
[0041] S1. After the coal gangue is ball milled, it is sieved through a 150-mesh standard sieve, and the screened coal gangue powder is dried at 90°C for 3.5 hours, and the dried coal gangue powder is reserved for later use;
[0042] S2, the preparation concentration is 1.5 mol / L containing Fe 3+ –Ni 2+ The saline solution is reserved for later use;
[0043] S3. Add the coal gangue powder and sodium hexametaphosphate dried in step S1 into distilled water and stir for 1.5 hours, then add the salt solution prepared in step S2 into the mixed solution, and continue stirring for 3 hours at room temperature to obtain a slurry , the mass ratio of coal gangue powder, sodium hexametaphosphate, distilled water and salt solution in the slurry is 2:0.15:3:5;
[0044] S4. The slurry obtained in step S3 is spray-dried by a spray dryer to obtain a gangue-based composite powde...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More