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Easily dispersable and nonsettleable modified calcium carbonate and preparation method thereof

A calcium carbonate, easy-to-disperse technology, applied in chemical instruments and methods, dyeing low-molecular organic compound treatment, dyeing high-molecular organic compound treatment, etc., can solve the uneven dispersion of high polymer, poor direct application effect, affinity Poor performance and other problems, to achieve the effect of enhanced corrosion resistance, high mechanical strength, and not easy to settle

Inactive Publication Date: 2015-12-16
池州青阳县龙酉钙业有限公司
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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 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 calcium carbonate and the dispersion performance in composite materials And the physical properties of modified calcium carbonate filled composite materials, it is necessary to use different surface modifiers and treatment methods to modify the surface of calcium carbonate powder, thereby broadening the application field of calcium carbonate

Method used

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Embodiment Construction

[0012] specific implementation plan

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

[0014] A modified calcium carbonate that is easy to disperse and not easy to settle and its preparation method is prepared from the following raw materials in parts by weight (kg): calcium carbonate 150, sodium oleate 46, sodium dodecylbenzenesulfonate 0.5, bicarbonate Sodium 2, styrene 6, potassium persulfate 0.04, fumed silica 4, organic bentonite 3, disproportionated potassium abietate 1, palm oil 4, talcum powder 3, appropriate amount of deionized water;

[0015] A kind of modified calcium carbonate which is easy to disperse and not easy to settle and preparation method thereof of the present invention is made by following specific steps:

[0016] (1) Dissolve sodium oleate and deionized water to make a 1% aqueous solution of sodium oleate, stir electrically for 10 minutes and raise the temperature to 60°C, add calcium carbonate and stir for 1....

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Abstract

The invention discloses an easily dispersable and nonsettleable modified calcium carbonate and a preparation method thereof. The modified calcium carbonate is characterized by being prepared from the following raw materials by weight part: 100-150 of calcium carbonate, 30-50 of sodium oleate, 0.3-0.7 of sodium dodecyl benzene sulfonate, 1-3 of sodium bicarbonate, 4-8 of styrene, 0.02-0.05 of potassium persulfate, 3-5 of fumed silica, 2-3 of organic bentonite, 1-2 of disproportionated potassium rosinate, 3-5 of palm oil, 2-3 of talcum powder, and a proper amount of deionized water. The disproportionated potassium rosinate, palm oil and talcum powder added in the invention enhance the corrosion resistance and mechanical properties of calcium carbonate, the process is safe and environment friendly, energy-saving and cost-reducing. The preparation method is simple, and is worthy of promotion.

Description

technical field [0001] The invention relates to the field of industrial fillers, in particular to a modified calcium carbonate which is easy to disperse and difficult to settle 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 imp...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/04C09C3/06C09C3/08C09C3/10
Inventor 李国栋
Owner 池州青阳县龙酉钙业有限公司
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