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A suspending agent and its application and coating
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A kind of suspending agent and coating technology, which is applied in the direction of coating, casting molding equipment, casting mold composition, etc., and can solve the problems of long preparation time, poor crack resistance and dispersibility, and high production cost
Active Publication Date: 2022-07-22
SONGSHAN LAKE MATERIALS LAB +1
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[0002] In the prior art, the suspending agent used in coatings is generally a mono- or multi-component suspending agent, and the mono-basic suspending agent is generally calcium-based bentonite, nano-based bentonite, lithium-based bentonite, organobentonite and sodium carboxymethylcellulose (CMC) etc., the suspension performance of the one-component suspending agent is obviously insufficient, the crack resistance and dispersibility are poor, and the production cost of lithium-based bentonite and organic bentonite is relatively high
[0003] The existing multi-component suspending agents generally use rectorite, sodium tripolyphosphate, sodium carboxymethyl cellulose, artificial mica, bentonite, sodium borate, silica sol, etc. as raw materials, not only the composition is relatively complicated, but the preparation time is relatively long , and compared with the one-component suspending agent, the existing multi-component suspending agent does not greatly improve the suspending ability of refractory aggregate, especially diatomite
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preparation example Construction
[0030] The preparation method of above-mentioned coating comprises:
[0031] The magnesium aluminum silicate is added to the water and stirred. After the magnesium aluminum silicate is completely dissolved, other raw materials in the suspending agent are added for stirring, and the carboxymethyl cellulose sodium is completely dissolved to obtain the suspending agent.
[0032] The refractory aggregate is added to the water and stirred evenly to obtain a refractory aggregate mixed solution.
[0033] The suspending agent and the refractory aggregate mixture are mixed and re-stirred to obtain a coating. The mixing can be the simultaneous addition of the suspending agent and the refractory aggregate mixture, or the addition of the suspending agent to the refractory aggregate mixture, or the addition of the refractory aggregate mixture to the suspending agent, which is not specifically limited here.
Embodiment 1
[0038] Add 1.2 parts by weight of magnesium aluminum silicate to 100 parts by weight of water and stir at high speed. After the magnesium aluminum silicate is completely dissolved, add 1 part by weight of sodium carboxymethyl cellulose, stir at high speed, and wait until the sodium carboxymethyl cellulose is completely dissolved. , to obtain a suspension.
[0039] Then, 100 parts by weight of diatomite was added to 100 parts by weight of water, and after stirring evenly, the above-mentioned suspending agent was added and stirred again to obtain a diatomite water-based coating. %.
Embodiment 2
[0041] Add 8 parts by weight of magnesium aluminum silicate to 100 parts by weight of water and stir at high speed. After the magnesium aluminum silicate is completely dissolved, add 1 part by weight of sodium carboxymethyl cellulose, stir at high speed, and wait until the sodium carboxymethyl cellulose is completely dissolved. After that, a suspension is obtained.
[0042] Add 100 parts by weight of diatomite into 100 parts by weight of water, and after stirring evenly, add the above-mentioned suspending agent and stir again, let stand for 24 hours, and the measured suspension rate of diatomite is 93%.
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Abstract
A suspending agent and its application and coating belong to the field of coatings. The suspending agent includes magnesium aluminum silicate and sodium carboxymethyl cellulose; wherein, the weight ratio between magnesium aluminum silicate and sodium carboxymethyl cellulose is 1-10:1. The above-mentioned specific raw materials of magnesium aluminum silicate and sodium carboxymethyl cellulose are used, and the specific ratio of the two is limited, so that the two can act synergistically, effectively improving the suspension rate of the solid material after dissolving in the solution, and compared with the existing multi-component The suspending agent has low gas generation and low cost, and in actual use, the solvent can be only deionized water or distilled water, and the use method is simple.
Description
technical field [0001] The present application relates to the field of coatings, in particular, to a suspending agent and its application and coatings. Background technique [0002] In the prior art, the used suspending agent of the coating is generally a monovalent or multi-component suspending agent, and the monovalent suspending agent is generally calcium-based bentonite, nano-based bentonite, lithium-based bentonite, organic bentonite and sodium carboxymethyl cellulose (CMC). etc., the suspension performance of the monobasic suspending agent is obviously insufficient, the crack resistance and dispersibility are poor, and the production cost of lithium-based bentonite and organic bentonite is relatively high. [0003] Existing multi-component suspending agents generally use rectorite, sodium tripolyphosphate, sodium carboxymethyl cellulose, artificial mica, bentonite, sodium borate, silica sol, etc. as raw materials, not only the components are more complicated, and the p...
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