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Method for preparing intercalated montmorillonite composite inorganic matter from nano calcium carbonate

A technology of nano calcium carbonate and intercalated montmorillonite, which is applied in inorganic pigment treatment, chemical instruments and methods, dyeing low molecular organic compound treatment and other directions, to achieve the effects of good dispersibility, low cost and simple process

Inactive Publication Date: 2014-06-25
EAST CHINA JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, regarding nano calcium carbonate (NanoCaCO 3 ) the method of synthesizing and intercalating modified montmorillonite between montmorillonite layers has not been reported

Method used

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  • Method for preparing intercalated montmorillonite composite inorganic matter from nano calcium carbonate

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Experimental program
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Embodiment 1

[0019] Take 20g of montmorillonite with a cation exchange capacity of 100mg / 100g and a particle size of 80 microns, make a 20% suspension with deionized water, stir ultrasonically for 1 hour at 30°C, add the organic intercalation agent hexadecyltri 0.4 g of methyl ammonium bromide, the temperature was raised to 80° C., and ultrasonic stirring was continued for 4 h to obtain a stable suspension system. Take 150ml concentration of 15% CaCl 2 The solution was added to the suspension at a uniform speed, stirred, the temperature was controlled at 30°C, the addition time was 4h, and CO was introduced at a flow rate of 1L / h 2 Gas for 5 hours, aged for 12 hours to obtain a slurry, centrifuge and filter to obtain a filter cake. Break the filter cake and put it into the 2 Roasting in a gas muffle furnace, the firing temperature is 200°C, the firing time is 2.5h, the material is cooled and discharged, and the agate is ground to obtain the nano-calcium carbonate intercalated montmoril...

Embodiment 2

[0022] Take 20g of montmorillonite with a cation exchange capacity of 150mg / 100g and a particle size of 50 microns, make a 15% suspension with deionized water, stir ultrasonically at 40°C for 2 hours, add the organic intercalation agent hexadecyltri 0.6 g of methyl ammonium bromide, the temperature was raised to 80° C., and ultrasonic stirring was continued for 4 h to obtain a stable suspension system. Take 450ml concentration of 20% CaCl 2 The solution was added to the suspension at a uniform speed, stirred, the temperature was controlled at 50°C, the addition time was 6h, and CO was introduced at a flow rate of 1L / h 2 Gas for 7 hours, aged for 12 hours to obtain a slurry, centrifuge, filter, and obtain a filter cake. Break the filter cake and put it into the 2 Roast in a gas muffle furnace at a temperature of 250°C for a time of 3 hours, cool and discharge, and grind agate to obtain nano-calcium carbonate intercalated montmorillonite composite inorganic matter. After th...

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Abstract

The invention discloses a method for preparing an intercalated montmorillonite composite inorganic matter from nano calcium carbonate. The method comprises the following steps: (1) carrying out organic intercalation, namely taking proper montmorillonite to be prepared into 15-25% of suspension liquid by deionized water, controlling the temperature at 30-50 DG C, ultrasonically agitating for 1-2 hours, adding a certain amount of an organic intercalation agent cetyl trimethyl ammonium bromide, heating to 70-80 DEG C, and further ultrasonically agitating for 2-4 hours, so as to obtain a stable suspension system; (2) carrying out nano calcium carbonate intercalation, adding a certain amount of CaC12 solution to the stable suspension liquid obtained in the step (1) at a constant speed, agitating, and controlling the temperature at 30-50 DEG C and the adding time at 4 hours, simultaneously introducing a CO2 gas for 4-8 hours at the flow of 1L / h, ageing for 12 hours, centrifuging and filtering to obtain a filter cake; (3) roasting, putting the filter cake into a muffle furnace with the CO2 gas to roast after crushing, wherein the roasting temperature is 180-250 DEG C, and the roasting time is 2-4 hours, cooling and discharging, and grinding agate, so as to obtain the intercalated montmorillonite composite material of the nano calcium carbonate.

Description

technical field [0001] The invention belongs to the technical field of preparation of new materials, and in particular relates to a preparation method for synthesizing intercalation montmorillonite composite inorganic matter with nanometer calcium carbonate. Background technique [0002] Polymer-based composite materials are widely used in various fields. With the advancement of human science and technology, the physical and mechanical properties and thermal properties of polymers are increasingly unable to meet people's needs. Therefore, how to improve the comprehensive performance of polymer matrix composites has been one of the hot research topics at home and abroad since the middle of last century. In 1987, Japan's Toyota Central Research Institute first reported the preparation of nylon 6 / montmorillonite (MMT) nanocomposites by melting intercalation method. The process of studying various properties of polymer / layered silicate nanocomposites. There are many report...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/42C09C3/08C09C3/06C08K9/04C08K3/34C08K3/26C08L23/12
Inventor 王少会
Owner EAST CHINA JIAOTONG UNIVERSITY
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