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Method for preparing single-crystal-form ball aragonite nano calcium carbonate through microemulsion system

A nano-calcium carbonate and microemulsion technology, applied in the field of nanomaterials, can solve problems such as preparing micron-scale vaterite-type calcium carbonate, and achieve the effects of easy industrialization and application, simple equipment and stable performance.

Inactive Publication Date: 2014-11-05
HENAN ANALYSIS TESTING CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the microemulsion method existing in the prior art can only prepare micron-sized vaterite type calcium carbonate, the object of the present invention is to provide a method for preparing single crystal vaterite type nano calcium carbonate in a microemulsion system

Method used

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  • Method for preparing single-crystal-form ball aragonite nano calcium carbonate through microemulsion system
  • Method for preparing single-crystal-form ball aragonite nano calcium carbonate through microemulsion system
  • Method for preparing single-crystal-form ball aragonite nano calcium carbonate through microemulsion system

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Experimental program
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Effect test

Embodiment １

[0030] (1) Preparation of microemulsion non-aqueous component system

[0031] At a temperature of 10°C, the non-aqueous components in the system are mixed and stirred evenly according to the mass ratio of Tuwen-80 emulsifier: n-butanol co-emulsifier: xylene oil phase in the ratio of 2:3:5;

[0032] (2) Preparation of calcium chloride microemulsion

[0033] the Prepare Calcium Chloride Solution

[0034] Dissolve calcium chloride in the water phase and stir evenly to prepare a calcium chloride aqueous solution with a concentration of 2.0M;

[0035] the Preparation of calcium chloride microemulsion

[0036] First step (2) -- The prepared calcium chloride aqueous solution is mixed with the microemulsion non-aqueous component system prepared in step (1), and stirred evenly. The mass ratio of each component after mixing is soil temperature-80 emulsifier: n-butanol co-emulsifier: two Toluene oil phase: calcium chloride is 2:3:5:0.35;

[0037] (3) Preparation of aqueous sodi...

Embodiment ２

[0052] (1) Preparation of microemulsion non-aqueous component system

[0053] At a temperature of 20°C, the non-water components in the system are mixed and stirred evenly according to the mass ratio of Tuwen-80 emulsifier: n-butanol co-emulsifier: xylene oil phase in the ratio of 2:8:10;

[0054] (2) Preparation of calcium chloride microemulsion

[0055] the Prepare Calcium Chloride Solution

[0056] Dissolve calcium chloride in the water phase and stir evenly to prepare a calcium chloride aqueous solution with a concentration of 2.0M;

[0057] the Preparation of calcium chloride microemulsion

[0058] First put step (2) -- The prepared calcium chloride aqueous solution is mixed with the microemulsion non-aqueous component system prepared in step (1), and stirred evenly. The mass ratio of each component after mixing is soil temperature-80 emulsifier: n-butanol co-emulsifier: two Toluene oil phase: calcium chloride is 2:8:10:0.61;

[0059] (3) Preparation of aqueous ...

Embodiment 3

[0074] (1) Preparation of microemulsion non-aqueous component system

[0075] At a temperature of 30°C, the non-water components in the system are mixed and stirred evenly according to the mass ratio of Tuwen-80 emulsifier: n-butanol co-emulsifier: xylene oil phase in the ratio of 2:3.5:5;

[0076] (2) Preparation of calcium chloride microemulsion

[0077] the Prepare Calcium Chloride Solution

[0078] Dissolve calcium chloride in the water phase and stir evenly to prepare an aqueous calcium chloride solution with a concentration of 2.5M;

[0079] the Preparation of calcium chloride microemulsion

[0080] First step (2) -- The prepared calcium chloride aqueous solution is mixed with the microemulsion non-aqueous component system prepared in step (1), and stirred evenly. The mass ratio of each component after mixing is soil temperature-80 emulsifier: n-butanol co-emulsifier: two Toluene oil phase: calcium chloride is 2:3.5:5:0.7;

[0081] (3) Preparation of aqueous so...

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Abstract

The invention discloses a method for preparing single-crystal-form ball aragonite nano calcium carbonate through a microemulsion system, and belongs to the technical field of nanometer materials. According to the method, a non-aqueous xylene / emulsifier / co-emulsifier microemulsion system is firstly prepared, then a calcium chloride microemulsion is prepared in a microemulsion area, then a sodium carbonate aqueous solution at certain concentration is slowly added into the calcium chloride microemulsion and reacts to finally obtain a ball aragonite nano calcium carbonate emulsion; or demulsification, precipitation, washing and drying are conducted to obtain the ball aragonite nano calcium carbonate powder. The ball aragonite nano calcium carbonate prepared according to the method provided by the invention has the characteristics such as small particle size, single crystal form, and good stability of crystal form. The reaction condition is mild, the equipment is simple and easy to operate, meanwhile, the chosen materials are low in cost and are easy to get, so that the method is easy in promotion and application.

Description

technical field [0001] The invention relates to a preparation method of nanomaterials, in particular to a microemulsion system and a preparation method of single-crystal vaterite nano-calcium carbonate under the system, belonging to the technical field of nanomaterials. Background technique [0002] Nano-calcium carbonate can be used as a modifier for plastics, rubber, polymer resins, coatings, inks, etc., to improve product performance and product quality. There are usually three anhydrous forms of calcium carbonate, namely calcite, vaterite and aragonite. Studies have found that calcium carbonate with different shapes, sizes and crystal forms has unique properties and characteristics, and exhibits excellent functional properties. This kind of calcium carbonate with different crystal forms and shapes is commonly known as polymorphic calcium carbonate, and has been widely used in many fields such as medicine, microelectronic devices, catalytic materials and energy technolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F11/18
Inventor 褚艳红刘珂珂郭辉邢会华郜丽红曹艳霞刘清曹健刘铁良张国宝
Owner HENAN ANALYSIS TESTING CENT
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