Preparation method of reaction-bonded silicon carbide
A technology of sintering silicon carbide and silicon carbide, which is applied in the field of inorganic materials, can solve problems such as unstable performance and difficult machining, and achieve low viscosity and good stability
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Embodiment 1
[0013] 1. Prepare the premix: dissolve the organic monomer (AM) and crosslinking agent (MBAM) in deionized water in a certain proportion, add the dispersant PVP, and stir with a constant temperature magnetic stirrer to make the premix evenly mixed.
[0014] 2. Mixing ball milling: Put the premixed solution and carbon black into a ball milling tank, and after planetary ball milling for 1 hour, add silicon carbide powder and dispersant TMAH, and ball milling for 2 hours to prepare a certain solid fraction of silicon carbide / carbon black. slurry.
[0015] 3. Vacuum degassing: Air bubbles are often generated in the slurry during ball milling, so the obtained slurry needs to be degassed by vacuuming. The slurry was degassed for 15 minutes at a vacuum degree of -0.1MPa to completely eliminate the air bubbles in the slurry and increase the density of the green body.
[0016] 4. Injection molding: Add the initiator ammonium persulfate (APS) into the above slurry (because the persulfu...
Embodiment 2
[0020] 1. Prepare the premix: dissolve the organic monomer (AM) and crosslinking agent (MBAM) in deionized water in a certain proportion, add the dispersant PVP, and stir with a constant temperature magnetic stirrer to make the premix evenly mixed.
[0021] 2. Mixing ball milling: Put the premixed solution and carbon black into a ball milling tank, and after 1.5 hours of ball milling in a planetary ball mill, add silicon carbide powder and dispersant TMAH, and ball mill for 3 hours to prepare a certain solid fraction of silicon carbide / carbon black. slurry.
[0022] 3. Vacuum degassing: Air bubbles are often generated in the slurry during ball milling, so the obtained slurry needs to be degassed by vacuuming. The slurry was degassed for 15 minutes at a vacuum degree of -0.1MPa to completely eliminate the air bubbles in the slurry and increase the density of the green body.
[0023] 4. Injection molding: Add the initiator ammonium persulfate (APS) into the above slurry (becaus...
Embodiment 3
[0027] 1. Prepare the premix: dissolve the organic monomer (AM) and crosslinking agent (MBAM) in deionized water in a certain proportion, add the dispersant PVP, and stir with a constant temperature magnetic stirrer to make the premix evenly mixed.
[0028] 2. Mixing ball milling: Put the premixed solution and carbon black into a ball milling tank, and after 2 hours of ball milling in a planetary ball mill, add silicon carbide powder and dispersant TMAH, and ball mill for 4 hours to prepare a certain solid fraction of silicon carbide / carbon black. slurry.
[0029] 3. Vacuum degassing: Air bubbles are often generated in the slurry during ball milling, so the obtained slurry needs to be degassed by vacuuming. The slurry was degassed for 15 minutes at a vacuum degree of -0.1MPa to completely eliminate the air bubbles in the slurry and increase the density of the green body.
[0030] 4. Injection molding: Add the initiator ammonium persulfate (APS) into the above slurry (because ...
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Abstract
Description
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Application Information
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