Modified calcium carbonate filler for paint and preparation method thereof

A calcium carbonate filler, calcium carbonate technology, applied in the direction of fibrous fillers, chemical instruments and methods, coatings, etc., can solve the problems of uneven dispersion of polymers, poor direct application effect, interface defects, etc., to improve affinity Oily, easy to promote, low cost effect

Inactive Publication Date: 2015-11-11
青阳县金峰石业有限公司
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  • Abstract
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Problems solved by technology

[0002] As a filler for rubber and plastic products, calcium carbonate can improve the heat resistance, wear resistance, dimensional stability, rigidity and processability of the product, and reduce the cost of the product, but its surface has hydroxyl groups with strong hydrophilicity. It presents a strong alkalinity. This hydrophilic and oleophobic property makes the affinity between calcium carbonate and organic polymers poor, and it is easy to form aggregates, resulting in uneven dispersion in the polymer, resulting in two materials. The effect of direct

Method used

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[0012] Specific implementation plan

[0013] The present invention will be described in detail below through specific examples.

[0014] A modified calcium carbonate filler for coatings and a preparation method thereof, prepared from the following parts by weight (kg) of raw materials: calcium carbonate 150, sodium oleate 46, sodium dodecylbenzene sulfonate 0.5, sodium bicarbonate 2 , Styrene 6, Potassium persulfate 0.04, Fumed silica 5, Organic bentonite 3, Laponite powder 2, Palm oil 3, Calcium carbide slag powder 3, Deionized water appropriate;

[0015] The modified calcium carbonate filler for coating of the present invention and its preparation method are prepared by the following specific steps:

[0016] (1) Dissolve sodium oleate and deionized water to make a 1% sodium oleate aqueous solution, stir it electrically for 10 minutes and raise the temperature to 60°C, add calcium carbonate and stir for 1.5 hours, after stirring, let it stand for 4 hours and then suction filter , Wa...

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Abstract

The invention discloses a modified calcium carbonate filler for paint and a preparation method thereof. The filler is characterized by being prepared from the following raw materials in parts by weight: 100 to 150 parts of calcium carbonate, 30 to 50 parts of sodium oleate, 0.3 to 0.7 part of sodium dodecyl benzene sulfonate, 1 to 3 parts of sodium bicarbonate, 4 to 8 parts of styrene, 0.02 to 0.05 part of potassium persulfate, 3 to 5 parts of gas-phase silicon dioxide, 2 to 3 parts of organic bentonite, 2 to 3 parts of hectorite powder, 1 to 3 parts of palm oil, 2 to 4 parts of calcium carbide slag powder, and a proper amount of deionized water. The added hectorite powder, palm oil, and calcium carbide slag powder can generate a synergetic effect, and can improve the lipophilicity of calcium carbonate, so the modified calcium carbonate can be well dispersed in paint, and the interface interaction is enhanced. Furthermore, the technology is simple and is easy to promote, the cost is low, no pollution is generated, and thus the application prospect is wide.

Description

technical field [0001] The invention relates to the field of industrial fillers, in particular to a modified calcium carbonate filler for coatings and a preparation method thereof. Background technique [0002] As a filler for rubber and plastic products, calcium carbonate can improve the heat resistance, wear resistance, dimensional stability, rigidity and processability of the product, and reduce the cost of the product, but its surface has hydroxyl groups with strong hydrophilicity. It presents a strong alkalinity. This hydrophilic and oleophobic property makes the affinity between calcium carbonate and organic polymers poor, and it is easy to form aggregates, resulting in uneven dispersion in the polymer, resulting in two materials. The effect of direct application is not good, and calcium carbonate is used as a filler, and its acid resistance, smoothness, whiteness and other properties need to be further improved. Therefore, in order to improve the reinforcing effect of...

Claims

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Application Information

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IPC IPC(8): C09D7/12C09C1/02C09C3/08C09C3/10C09C3/06
Inventor 马明生
Owner 青阳县金峰石业有限公司
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