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 nano-materials, can solve the problems of preparing micron-scale vaterite-type calcium carbonate, etc., and achieve the effects of easy industrialization and application, stable performance and small specific gravity.

Inactive Publication Date: 2014-02-12
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 carbo...

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 uniformly according to the mass ratio of TU-80 emulsifier: n-butanol co-emulsifier: xylene oil phase of 2:3:5;

[0032] (2) Preparation of calcium chloride microemulsion

[0033] ​ Prepare calcium chloride solution

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

[0035] ​ 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), stirred evenly, and the mass ratio of each component after mixing is TU-80 emulsifier: n-butanol co-emulsifier: two Toluene oil phase: calcium chloride is 2:3:5:0.35;

[0037] (3) Preparation of sodium carbonate aqueous solution

[0038] ...

Embodiment ２

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

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

[0054] (2) Preparation of calcium chloride microemulsion

[0055] ​ Prepare calcium chloride solution

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

[0057] ​ Preparation of calcium chloride microemulsion

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

[0059] (3) Preparation of sodium carbonate aqueous solution

[0060] D...

Embodiment 3

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

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

[0076] (2) Preparation of calcium chloride microemulsion

[0077] ​ Prepare calcium chloride solution

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

[0079] ​ 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), stirred evenly, and the mass ratio of each component after mixing is TU-80 emulsifier: n-butanol co-emulsifier: two Toluene oil phase: calcium chloride is 2:3.5:5:0.7;

[0081] (3) Preparation of sodium carbonate aqueous solution

[008...

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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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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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