Ceramic body and forming method thereof, and ceramic product
A technology for a ceramic blank and a molding method, applied in the field of ceramics, can solve the problems of low strength, difficult machining, and low ceramic content in the blank, and achieve good fluidity, low shrinkage, increased density and ceramic content. Effect
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[0030] The preparation of the epoxy system powder: by kneading the above epoxy resin, curing agent and curing accelerator, and rapidly cooling to obtain a block solid epoxy system, then the block solid epoxy system Carry out crushing, make the epoxy system powder that particle size is 1-3um; Wherein, described milling is that epoxy resin, curing agent and solidification accelerator are milled 3-5min on the mill, and cooling rapidly, described The roller temperature of the mill depends on the softening point of the epoxy resin and its curing agent. The temperature needs to be controlled above the softening point of the epoxy system and below the reaction temperature. Generally speaking, it can be 5°C above the softening point. To avoid the reaction and solidification of the epoxy system, in addition, the time of refining should be strictly controlled, and it needs to be cooled rapidly after refining. The crushing is to place the block solid epoxy system after the milling in a c...
Embodiment 1
[0041] Step 1, ingredients: 1), weigh 100g o-cresol novolac epoxy resin (CYDCN-200H, Baling Petrochemical), 50g novolac resin (JSF-A002-23, Jiusheng Chemical), 0.5g dimethylimidazole, Refining on a mill with a roll temperature of 100°C for 5 minutes, then rapidly cooling down to obtain a bulk epoxy system, and then passing through a jet mill (control the temperature of the jet mill below 50°C) to crush the bulk epoxy system to an average particle size Epoxy system powder with a diameter of 2μm, and take 3g of epoxy system powder for use; 2) Prepare SiC powder with different particle sizes: weigh 75g of SiC powder with a particle size of 50μm, and SiC powder with a particle size of 5μm 25g; 3), measure 100g of absolute alcohol;
[0042] Step 2: Ball milling: Put 3g of epoxy composite powder, 100g of SiC powder, and 100g of absolute alcohol in a ball mill and disperse for 8 hours to obtain a slurry;
[0043] Step 3, Forming: 1), introduce the slurry into the mold, and perform d...
Embodiment 2
[0046] Step 1, ingredients: 1), weigh 100g of epoxy resin containing naphthalene ring structure (HP-4700), 60g of 2-ethyl-4 methylimidazole, and knead in the open mill with the roller temperature of 100°C for 5min, and then quickly The bulk epoxy system was prepared by cooling down, and then the bulk epoxy system was broken into epoxy system powder with an average particle size of 3 μm by jet mill (control the temperature of jet mill below 50°C), and 5g of epoxy system powder was taken Standby; 2) Prepare SiC with different particle sizes: weigh 75g of SiC powder with a particle size of 50μm, and 25g of SiC powder with a particle size of 5μm; 3) Measure 90g of acetone;
[0047] Step 2: Ball milling: put 5g of epoxy composite powder, 100g of SiC powder, and 90g of acetone in a ball mill and disperse for 8 hours to obtain a slurry;
[0048] Step 3, forming: 1), introduce the slurry into the mold, and perform defoaming treatment; 2), then let the slurry stand still to separate th...
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