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Cellulose/montmorillonite nanometer composite material and its preparation method

A nano-composite material and montmorillonite technology, which is applied in the chemical industry, can solve the problems of environmental pollution, low utilization rate of straw, waste of natural resources, etc., achieve wide application prospects, facilitate industrial production, and inhibit thermal decomposition.

Inactive Publication Date: 2006-11-29
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Straw is the residue of crops after the harvest of seeds, with an annual output of hundreds of millions of tons, but the utilization rate of straw is very low in my country, accounting for only about 5%. Most of the straw is burned as waste or only used as fuel. It not only wastes a lot of natural resources, but also pollutes the environment, making the SO in the air 2 and NO x seriously exceeded

Method used

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  • Cellulose/montmorillonite nanometer composite material and its preparation method
  • Cellulose/montmorillonite nanometer composite material and its preparation method
  • Cellulose/montmorillonite nanometer composite material and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Embodiment 1, the preparation of cellulose / montmorillonite nanocomposite material:

[0030] ①Preparation of straw cellulose: crush corn stalks, add 120 times the mass of straw powder and 60% nitric acid solution, reflux at 120°C for 2 hours; then add an equimolar amount of nitric acid to reflux 1h, suction filtration, washing with distilled water, drying to obtain straw cellulose;

[0031] ②Modification of montmorillonite: put natural montmorillonite in water, stir and heat in a constant temperature water bath at 40°C for 30-60 minutes, then let it stand to form a montmorillonite aqueous dispersion; take 0.5 times the mass of natural montmorillonite Dodecyltrimethylammonium bromide is placed in water, and hydrochloric acid of 1 times the mass of natural montmorillonite is added to adjust to form a protonated solution, and the protonated solution is added dropwise to the montmorillonite water dispersion, and ultrasonically vibrated After 3 to 4 hours, filter with suctio...

Embodiment 2

[0033] Embodiment 2, the preparation of cellulose / montmorillonite nanocomposite material:

[0034] ①Preparation of straw cellulose: crush the wheat straw, add it into a nitric acid solution with 90 times the weight of the straw powder and a concentration of 62%, and reflux at 110° C. for 3 hours; then add an equimolar amount of nitric acid to reflux 1.5h, suction filtration, washing with distilled water, drying to obtain straw cellulose;

[0035] ②Modification of montmorillonite: put natural montmorillonite in water, stir and heat in a constant temperature water bath at 50°C for 30-60 minutes, then let it stand to form a montmorillonite aqueous dispersion; take 0.3 times the mass of natural montmorillonite Cetyltrimethylammonium bromide is placed in water, and hydrochloric acid of 0.8 times the quality of natural montmorillonite is added to adjust to form a protonated solution, and the protonated solution is added dropwise to the montmorillonite aqueous dispersion, and ultraso...

Embodiment 3

[0037] Embodiment 3, the preparation of cellulose / montmorillonite nanocomposite material:

[0038] ①Preparation of straw cellulose: crush corn stalks, add them to a nitric acid solution with a concentration of 65% and 60 times the weight of the straw powder, and reflux at 100°C for 2.5 hours; Reflux for 1.3h, suction filter, wash with distilled water, and dry to obtain straw cellulose;

[0039] ②Modification of montmorillonite: put the natural montmorillonite in water, stir and heat it in a constant temperature water bath at 60°C for 30-60 minutes, and then let it stand to form an aqueous dispersion of montmorillonite; take 0.4 times the mass of natural montmorillonite Octadecyltrimethylammonium chloride is placed in water, and hydrochloric acid of 1 times the mass of natural montmorillonite is added to adjust to form a protonated solution, and the protonated solution is added dropwise to the montmorillonite aqueous dispersion, and ultrasonically vibrated After 3 to 4 hours, ...

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Abstract

A nano-class cellulose-montmorillonite composition with high elasticity and high-temp resistance is prepared through intercalating the cellulose between the layers of montmorillonite to make the montmorillonite to bind the cellulose tightly and to be uniformly dispersed in cellulose by nano class.

Description

technical field [0001] The invention belongs to the technical field of chemical engineering, and relates to a composite heat-resistant material, in particular to a nano-composite material with good elasticity and wear resistance formed by the interaction between crop straw fibers and natural montmorillonite. - Cellulose / montmorillonite nanocomposites. Background technique [0002] Due to its special properties, natural montmorillonite is widely used as a filler for heat-resistant polymer composites. Within a certain range, the higher the filler content, the better the performance of the composite material, but the mechanical properties of the material decrease, especially the toughness of the material. will drop significantly. An effective way to improve the performance of composite materials is to uniformly fill the polymer with inorganic substances, which can improve its thermal and mechanical properties. [0003] The fiber elastic material uses suitable fibers as the sk...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/02C08K3/34
Inventor 莫尊理张平孙银霞赵仲丽陈红
Owner NORTHWEST NORMAL UNIVERSITY
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