Hard ceramic grinding synergist and preparation method thereof
A synergist and hard technology, which is applied in polishing compositions containing abrasives, chemical instruments and methods, and other chemical processes, can solve problems such as reducing the efficiency of abrasives, destroying long-chain structures, and deteriorating suspension performance. , to achieve the effect of improving surface grinding efficiency, reducing hardness and weakening chemical bond strength
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Embodiment 1
[0021] Prepare a hard ceramic grinding synergist as follows: in 3000g of water, add 2000g of sodium polyaspartate, 3000g of sodium ethylenediamine tetramethylene phosphonate, 1000g of aluminum silicate bentonite, and 50g of polyethylene glycol twelve Alkyl ether surfactant, stir evenly, and finally adjust the pH to 10.5 with alkali for sapphire grinding.
Embodiment 2
[0023] Add 0.0kg, 0.5kg, 1.0kg, 1.5kg, and 2.0kg of the grinding synergist of Example 1 into 7kg of pure water, stir well, and mark as 2a, 2b, 2c, 2d, and 2e. Add 2.5kg of 320-mesh boron carbide into the above liquid, and stir evenly to obtain 2a, 2b, 2c, 2d and 2e grinding liquids containing boron carbide.
[0024] Grind the prepared slurry on a Shengko single-side grinder. Down pressure: 1psi, the rotation speed of the lower plate and the carrier plate is 20RPM, the flow rate of the grinding liquid: 100ml / min, the material of the grinding plate: nodular cast iron 600. The grinding time was 10 minutes, and 12 pieces of 2" sapphire wafers were ground each time. 2" C-plane sapphire wire-cut wafers were used for the grinding test. The grinding speeds of this series of grinding fluids are 2.3, 3.1, 4.0, 5.2, 5.8 μm / min. The surface roughness of the sapphire crystal surface is evenly distributed, without deep scratches, and there is no deposition on the surface of the grinding m...
Embodiment 3
[0027] The grinding liquid prepared in Example 2 can be recycled, and its grinding rate is respectively: 0.3, 0.7, 2.2, 3.2, 3.5 μm / min at the 15th time. It can be seen that the grinding synergist of the present invention can not only accelerate the grinding efficiency, but also prolong the service life of the grinding liquid.
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