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Preparation method of easily dispersible quaternary ammonium salt modified nano organic montmorillonite

A nano-organic, easy-to-disperse technology, applied in the treatment of dyeing low-molecular-weight organic compounds, chemical instruments and methods, and inorganic pigment treatment, etc. Mechanical properties, the effect of solving fatal defects

Inactive Publication Date: 2018-11-06
JIANGSU HEMINGS NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently a fatal flaw in the field of organic montmorillonite / polymer composite materials, that is, although organic montmorillonite itself is at the nanometer level, it is extremely easy to agglomerate in the polymer and is difficult to disperse effectively, thus fundamentally Greatly weakens its reinforcing effect on the polymer

Method used

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  • Preparation method of easily dispersible quaternary ammonium salt modified nano organic montmorillonite

Examples

Experimental program
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Effect test

Embodiment 1

[0015] An easily dispersible quaternary ammonium salt modified nano-organic montmorillonite is prepared according to the following steps from the following raw material components in parts by mass:

[0016] (1) First, 100 parts of calcium-based montmorillonite (model: MS-C; produced by Zhejiang Fenghong New Material Co., Ltd.; the same below) and 1 part of La 2 o 3 Stir evenly, and then bake at 100°C for 10 minutes; then take it out and add 500 parts of pure water, stir well until it is completely dispersed to form a uniform solution;

[0017] (2) Then add 1 part of concentrated sulfuric acid and stir for 15 minutes, then filter and wash, and roast the filter cake at 80°C for 60 minutes, then take out the dried filter cake and add 500 parts of pure water, and add 1 part of Dy( NO 3 ) 3 , and continue to stir for 30min;

[0018] (3) Next, add 30 parts of quaternary ammonium salt octadecyltrimethylammonium bromide and raise the temperature of the reaction system to 65°C, kee...

Embodiment 2

[0020] An easily dispersible quaternary ammonium salt modified nano-organic montmorillonite is prepared according to the following steps from the following raw material components in parts by mass:

[0021] (1) First, 100 parts of Na-montmorillonite (model: MS-N2; produced by Zhejiang Fenghong New Material Co., Ltd.; the same below), 2.5 parts of Ce 2 o 3 , 2.5 Ln 2 o 3 Stir evenly, and then bake at 130°C for 20 minutes; then take it out and add 500 parts of pure water, stir well until it is completely dispersed to form a uniform solution;

[0022] (2) Then add 2 parts of concentrated sulfuric acid and 3 parts of concentrated hydrochloric acid and stir for 30 minutes, then filter and wash, and roast the filter cake at 100°C for 90 minutes, then take out the dried filter cake and add 500 parts of pure water, after fully stirring Add 3 servings of Dy2 (SO 4 ) 3 and 2 parts of Sr(NO 3 ) 2 , and continue to stir for 60min;

[0023] (3) Next, add 30 parts of dioctadecyldime...

Embodiment 3

[0025] An easily dispersible quaternary ammonium salt modified nano-organic montmorillonite is prepared according to the following steps from the following raw material components in parts by mass:

[0026] (1) First, mix 50 parts of sodium montmorillonite, 50 parts of calcium montmorillonite, and 0.5 parts of La 2 o 3 , 0.5 Ce 2 o 3 , 0.5 Ln 2 o 3 Stir evenly, and then bake at 110°C for 15 minutes; then take it out and add 500 parts of pure water, stir well until it is completely dispersed to form a uniform solution;

[0027] (2) Then add 1 part of concentrated hydrochloric acid, 1 part of dilute phosphoric acid with a mass fraction of 15%, and 1 part of dilute boric acid with a mass fraction of 10% and stir for 20 minutes, then filter, wash, and roast the filter cake at 85°C for 70 minutes. Then take out the dried filter cake and add 500 parts of pure water, stir well and add 0.8 parts of DyCl 3 , 0.9 parts of Sr(NO 3 ) 2 , 0.5 parts of SrSO 4 , and continue to stir...

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Abstract

The invention discloses a preparation method of easily dispersible quaternary ammonium salt modified nano organic montmorillonite. The preparation method is characterized by including first utilizingrare earth ions to chemically modify montmorillonite layered crystals, and then adsorbing a large amount of organic quaternary ammonium salt cations in the interlayer region to obtain the quaternary ammonium salt modified organic montmorillonite that can be fully stripped and completely dispersed in a polymer matrix. The mechanical strength, the mechanical property, the heat resistance and the gasbarrier property of a polymer are greatly improved.

Description

technical field [0001] The invention relates to the field of modification of organic montmorillonite, in particular to a method for preparing nanoscale organic montmorillonite which can be widely used in plastics, resins, rubber and other polymers. Background technique [0002] Montmorillonite is a 2:1 type silicate mineral structure containing crystal water, which is composed of two layers of Si-O tetrahedral sheets connected by common top and a layer of Al-O octahedral sheets connected by common edge, and its particle size is close to Nanoscale (analyzed by a diffractometer slow scan), is a natural two-dimensional layered nanomaterial. Using high-quality sodium bentonite, organic montmorillonite (often called "organic bentonite") can be obtained through purification, modification and organic intercalation reaction. One of the most widely used organic montmorillonite is as a rheological additive in various organic solvents, oils, and liquid resins, so that it has good th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K9/02C08K3/34C08L67/02C09C1/28C09C3/08C09C3/06C09C3/04
CPCC08K3/346C08K9/02C08K9/04C08K2201/011C09C1/28C09C3/006C09C3/043C09C3/06C09C3/08C08L67/02
Inventor 张天志张天毅
Owner JIANGSU HEMINGS NEW MATERIALS TECH CO LTD
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