Water-based paint for full mold and preparation method and using method of water-based paint
A water-based coating and lost foam technology, applied in coatings, manufacturing tools, casting and molding equipment, etc., can solve the problems of high price and high cost, and achieve the effects of low production cost, good coating and hanging performance, and high refractoriness.
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[0021] Example 1:
[0022] The water-based paint for lost foam according to the embodiment of the present invention comprises a primer and a top paint. The primer is composed of 10-15 parts by weight of 200 mesh quartz powder and 10-15 parts by weight of 270 mesh quartz powder. 1.2-1.4 parts of sodium hydroxymethyl cellulose, 1.2-1.4 parts of lithium bentonite, 0.8-1.0 parts of starch, 0.024-0.026 parts of washing powder, 0.2-0.3 parts of iron oxide, 90-100 parts of water; The weight parts are as follows: 10-15 parts of 200 mesh quartz powder, 10-15 parts of 270 mesh quartz powder, 0.8-1.0 parts of sodium hydroxymethyl cellulose, 1.1-1.3 parts of sodium bentonite, 0.8-1.0 parts of flour, washing powder 0.024-0.026 parts, 110-120 parts of water.
Example Embodiment
[0023] Example 2:
[0024] A preparation method of the primer as described in Example 1, such as figure 1 As shown, including the following steps:
[0025] Step 101: Dissolve 1.2-1.4 parts of sodium carboxymethyl cellulose in 10-20 parts of water and soak for more than 24 hours to obtain solution A;
[0026] Step 102: Dissolve 0.8-1.0 parts of starch and 0.024-0.026 parts of washing powder in 30-40 parts of water and stir for 2-5 hours to obtain solution B;
[0027] Step 103: Place 10-15 parts of 200-mesh quartz powder, 10-15 parts of 270-mesh quartz powder, 1.1-1.3 parts of lithium bentonite, and 0.2-0.3 parts of iron oxide in a grinder for 2-8 hours, and add 40 -60 parts of water, grind for 4-7 hours to obtain paste C;
[0028] Step 104: Add the solutions A, B and paste C into the paint mixing machine, which has a built-in wear-resistant steel ball, and grind and mix the mill for 12-20 hours to obtain the primer;
Example Embodiment
[0029] Example 3:
[0030] A method for preparing the top coating as described in Example 1, such as figure 2 As shown, including the following steps:
[0031] Step 105: Dissolve 0.8-1.0 parts of sodium carboxymethylcellulose in 10-20 parts of water and soak for 4-6 hours to obtain solution D;
[0032] Step 106: Combine 10-15 parts of 200-mesh quartz powder, 10-15 parts of 270-mesh quartz powder, 0.8-1.0 parts of sodium hydroxymethylcellulose, 1.1-1.3 parts of sodium bentonite, 0.8-1.0 parts of flour, 0.024-0.026 Put one part of the washing powder into the paint mixing machine, 4 hours after mixing, add 90-110 parts of water and solution D, and mix for 4 hours to obtain the surface paint.
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