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Organic montmorillonite and its composite with polyurethane

A technology of organic montmorillonite and montmorillonite, which is applied in the direction of dyeing low-molecular-weight organic compounds, etc., can solve the problems of increasing cost, not having industrial application value, and unable to effectively open the spacing of montmorillonite lamellae, so as to achieve the production cost. The effect of low and high industrial utilization value

Inactive Publication Date: 2008-04-23
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former not only increases the cost, but the performance of the prepared product is also poor, and has no industrial application value. The latter cannot effectively expand the interlamellar distance of montmorillonite, and cannot make montmorillonite reach a nanoscale dispersion state.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Prepare 100 g of sodium montmorillonite with a particle size of 75 microns with 1900 g of 0.5 mol / L hydrochloric acid to form a suspension with a mass fraction of 5%, stir vigorously at 30°C for 3 hours, filter and wash the suspension until neutral , the filter cake and 60g of cetyltrimethylammonium bromide are formulated into an aqueous solution of 10% acidified sodium montmorillonite mass fraction and mixed and stirred for 2 hours, filtered and washed, dried and ground to obtain organic montmorillonite . The wide-angle X-ray diffraction test of the prepared organic montmorillonite shows that the interlamellar spacing is 4.1nm.

Embodiment 2

[0021] Prepare 100 g of sodium montmorillonite with a particle size of 75 microns and 9900 g of hydrochloric acid with a mass concentration of 0.5 mol / L to form a suspension with a mass fraction of 1%, stir vigorously at 30°C for 3 hours, filter and wash the suspension until neutral , the filter cake and 60g of hexadecyltrimethylammonium bromide were mixed with a mass fraction of 1% aqueous solution and mixed and stirred for 2 hours, filtered and washed, dried and ground to obtain organic montmorillonite. The wide-angle X-ray diffraction test of the prepared organic montmorillonite shows that the interlamellar spacing is 4.1nm.

Embodiment 3

[0023] Prepare 100 g of sodium montmorillonite with a particle size of 75 microns and 900 g of 0.5 mol / L hydrochloric acid to form a suspension with a mass fraction of 10%, stir vigorously at 30°C for 3 hours, filter and wash the suspension until neutral , the filter cake and 60g of cetyltrimethylammonium bromide are formulated into an aqueous solution of 10% acidified sodium montmorillonite mass fraction and mixed and stirred for 2 hours, filtered and washed, dried and ground to obtain organic montmorillonite . The wide-angle X-ray diffraction test of the prepared organic montmorillonite shows that the interlamellar spacing is 4.1nm.

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Abstract

The invention relates to an organic montmorillonite and compound with polyurethane, which is characteristic in that: acidifying and treating the Na-base montmorillonite, and reacting with long-chain alkyl ammonium salt to obtain the product. This product can not generate trimerization catalysis with isocyanate when composing with polyether polyol- isocyanate, can push off the layer gap of montmorillonite to nano state, and has high industrial application value.

Description

technical field [0001] The invention relates to an organic montmorillonite, in particular to an acidified modified organic montmorillonite, and also to a composite of the organic montmorillonite and polyurethane. Background technique [0002] The main component of montmorillonite is inorganic aluminosilicate, which has an easy-to-exfoliate sheet structure, and one-dimensional nanoparticles are formed after the sheet is peeled off. It has been widely used in the preparation of nanocomposites. [0003] Polyurethane is an emerging high-performance material. At present, the industry generally adopts a two-step method to prepare polyurethane elastomers. First, the polymerized polyol and diisocyanate are reacted to synthesize a prepolymer, and then the prepolymer is reacted with a chain extender to prepare the elastomer. Most of the elastomers used are low-cost polymer polyol-TDI-MOCA systems, but the elastomers prepared by this system have low mechanical properties. The elastome...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/04C09C3/08C08L75/04
Inventor 廖兵曹悠庞浩胡美龙
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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