Preparation method of ultra-fine active heavy calcium carbonate

A technology of heavy calcium carbonate and heavy calcium carbonate powder, applied in chemical instruments and methods, inorganic pigment treatment, dyeing low-molecular organic compound treatment, etc., can solve the problems of increasing product volume, reducing production cost, and poor affinity , to speed up stirring speed, improve modification efficiency and quality, and reduce friction

Inactive Publication Date: 2018-06-01
XUANCHENG XINTAO CALCIUM CARBONATE
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Problems solved by technology

It is a commonly used powdered inorganic filler with high chemical purity, high inertness, difficult chemical reaction, and good thermal stability. It is widely used in industries such as rubber, plastics, paper, paint, ink, cables, and construction supplies. It plays an important role as a filler. Increase the volume of the product and reduce the production cost. The production components of heavy calcium carbonate are dry method and wet method. After the ground calcium carbonate is ground, its hydrophilic and oleophobic properties are compatible with other organic high polymers. Poor properties, it is inevitable that they will be fully dispersed in organic high polymers, and will form aggregates inside the organic high polymer system, which will lead to deviations in the performance of manufactured products. At present, modified ground calcium carbonate products are generally produced by dry methods. In the process of reducing production procedures, and then modifying during grinding, the activation rate of modification in this production method is low, which increases the complexity of the production process

Method used

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  • Preparation method of ultra-fine active heavy calcium carbonate
  • Preparation method of ultra-fine active heavy calcium carbonate

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Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1, one part of modified heavy calcium carbonate is made of following material components under normal pressure: heavy calcium carbonate 82%, calcium chloride 5, all the other are dehydrated alcohol and mix miniature titanic acid coupling agent the mixture formed;

[0024] Among them, 0.2%, 0.5%, 0.8%, 1.1% and 1.4% of micro-titanic acid coupling agents are respectively selected, and the corresponding rest is absolute ethanol. First, heavy calcium carbonate fine powder and calcium chloride powder are evenly sealed and stirred , lasted for 30 minutes, gradually added 0.2% combined solution of micro titanic acid coupling agent and absolute ethanol 11.8% during the stirring process, and gradually raised its temperature within 5-20 minutes during the stirring process, the highest temperature At 70°C, select 0.5%, 0.8%, 1.1%, and 1.4% micro-titanic acid coupling agents according to the above, and the rest are absolute ethanol for proportioning solutions, and add he...

Embodiment 2

[0028] Embodiment 2, one part of modified heavy calcium carbonate is made of the following material components at normal temperature and pressure: heavy calcium carbonate 86%, calcium chloride 2, and the rest is dehydrated alcohol and micro titanic acid coupling The solution of the agent, wherein first heavy calcium carbonate fine powder and calcium chloride powder are uniformly sealed and stirred for 30 minutes, and gradually add 0.2% of the combination of micro titanic acid coupling agent and absolute ethanol 11.8% during the stirring process solution, and gradually heat it up within 5-20 minutes during the stirring process, the highest temperature is at 70°C, and then select 0.5%, 0.8%, 1.1%, and 1.4% of the matching micro-titanic acid coupling agent, the rest is anhydrous ethanol for proportioning solution, adding a mixture of heavy calcium carbonate 83% and calcium chloride 5 and stirring for 30 minutes, and at least 5% of each component is prepared.

[0029] The above-me...

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Abstract

The invention discloses a preparation method of ultra-fine active heavy calcium carbonate and belongs to the technical filed of heavy calcium carbonate. The ultra-fine active heavy calcium carbonate is prepared by mixing a heavy calcium carbonate powder, absolute ethyl alcohol, a titanate coupling agent and calcium chloride by adopting a wet process and modified by adopting a wet grinding method,so that the affinity of the heavy calcium carbonate and an organic high polymer is improved, and the dispersibility of the heavy calcium carbonate in the organic high polymer is improved. The preparation method disclosed by the invention has the benefits that through the modification of the heavy calcium carbonate, the filling quantity of the heavy calcium carbonate is improved, and the product performance is improved.

Description

technical field [0001] The invention belongs to the technical field of modification of heavy calcium carbonate, and in particular relates to an ultrafine active heavy calcium carbonate and a preparation method thereof. Background technique [0002] Heavy calcium carbonate, referred to as heavy calcium, is ground from natural carbonate minerals such as calcite, marble, and limestone. It is a commonly used powdered inorganic filler with high chemical purity, high inertness, difficult chemical reaction, and good thermal stability. It is widely used in industries such as rubber, plastics, paper, paint, ink, cables, and construction supplies. It plays an important role as a filler. Increase the volume of the product and reduce the production cost. The production components of heavy calcium carbonate are dry method and wet method. After the ground calcium carbonate is ground, its hydrophilic and oleophobic properties are compatible with other organic high polymers. Poor propertie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/06C09C3/08
CPCC01P2004/61C09C1/021C09C3/006C09C3/06C09C3/08
Inventor 李涛李国庆曹晶晶展宗峥
Owner XUANCHENG XINTAO CALCIUM CARBONATE
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