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A kind of metal-edta complex solution and its preparation method and application

A complex and solution technology, applied in the field of wood materials, can solve the problems of cumbersome processing technology, complex synthetic materials, and environmental pollution, and achieve the effects of simple synthesis process, good storage stability, and easy handling

Active Publication Date: 2017-12-08
INNER MONGOLIA AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the traditional method of enhancing the electrical conductivity of wood has disadvantages in production and use, such as polluting the environment, high cost, complex synthetic materials, and cumbersome processing techniques.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a kind of metal-EDTA complex solution, the raw material of this metal-EDTA complex solution comprises solute and solvent water, and the total amount of solution is 100%, and described solute comprises: 6.5wt% ethyl alcohol Disodium diaminetetraacetic acid, the dry component of the HAc-NaAc buffer solution of 4.3wt% (it is formulated into HAc-NaAc buffer solution, and wherein component comprises: the glacial acetic acid of 7.5wt%, the sodium acetate of 6.3wt%, remaining Amount of water), 4.4wt% copper sulfate pentahydrate.

[0042] The present embodiment also provides the preparation method of above-mentioned metal-EDTA complex solution, comprises the following steps:

[0043] Prepare HAc-NaAc buffer solution, wherein, in mass percent, described HAc-NaAc buffer solution comprises the glacial acetic acid of 7.5wt%, the sodium acetate of 6.3wt%, the water of remainder; The pH of described HAc-NaAc buffer solution The value is 4.0-4.2.

[0044] Ba...

Embodiment 2

[0051] This embodiment provides a kind of metal-EDTA complex solution, the raw material of this metal-EDTA complex solution comprises solute and solvent water, and the total amount of solution is 100%, and described solute comprises: 6.5wt% ethyl alcohol Disodium diamine tetraacetate, 11.8 wt% NH 3 -NH 4 Dry ingredients of Cl buffer solution (make it into NH 3 -NH 4 Cl buffer solution, wherein the components include: 5.1wt% of ammonium chloride, 33.2wt% of ammonia water, the rest of water), 4.5wt% of magnesium nitrate hexahydrate.

[0052] The present embodiment also provides the preparation method of above-mentioned metal-EDTA complex solution, comprises the following steps:

[0053] Preparation of NH 3 -NH 4 Cl buffer solution, wherein, by mass percentage, the NH 3 -NH 4 Cl buffer solution comprises the ammonium chloride of 5.1wt%, the ammoniacal liquor of 33.2%, the water of surplus; The NH 3 -NH 4 The pH value of the Cl buffer solution is 10.0-10.2.

[0054] Base...

Embodiment 3

[0061] This embodiment provides a metal-EDTA complex solution, the raw materials of the metal-EDTA complex solution include solute and solvent water, and the total amount of the solution is 100%, and the solute includes: 6.6wt% ethyl alcohol Disodium diamine tetraacetate, 4.9 wt% ferrous sulfate heptahydrate.

[0062] The present embodiment also provides the preparation method of above-mentioned metal-EDTA complex solution, comprises the following steps:

[0063] Taking the weight as 100%, take 6.6wt% disodium edetate in a round bottom flask, add 59.0wt% water to dissolve and stir evenly to form a disodium edetate solution; the pH value of the solution at this time 5.1-5.3, to meet the reaction requirements, the amount of buffer solution added is 0wt%; sealed and boiled for 1-2min; finally add 4.9wt% ferrous sulfate heptahydrate and the remaining water to form a mixed solution for complexation reaction, let stand and cool to At room temperature, a metal-EDTA complex solution ...

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PUM

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Abstract

The invention provides a metal-ethylene diamine tetraacetic acid (EDTA) complex solution and a preparation method and application thereof. The metal-EDTA complex solution comprises solute and solvent water. The solute comprises, by the total weight 100% of the solution, 5.1%-7.0% of EDTA disodium and 0-12.4% of dry elements of a pH buffer solution, and metal salt. The molar ratio of the EDTA disodium to the metal salt is 1:1. The metal-EDTA complex solution is uniform, transparent and free of sediment and has good storage stability. The invention further provides the application of the metal-EDTA complex solution in the improvement of the electric conductivity of wood and modified wood prepared by using the metal-EDTA complex solution. The application method has the advantages that treatment is easy and convenient, the cost is low, the effect is excellent, and pollution to the environment is avoided; and the modified wood maintains the original appearance, the mechanical property and other properties of wood and has good electric conductivity.

Description

technical field [0001] The invention belongs to the field of wood materials, and in particular relates to a metal-EDTA complex solution, a preparation method thereof and an application of the metal-EDTA complex solution in enhancing the electrical conductivity of wood. Background technique [0002] As a kind of biomass material, wood has the advantages of natural regeneration, excellent natural characteristics and human affinity compared with metal, cement, polymer synthetic materials, etc., and has been widely used in our production and production for a long time. in life. Although wood has these excellent special properties, its application in many occasions is limited due to its defects in thermal conductivity and electrical conductivity. For example, as a common decorative material, due to its non-conductive properties, in order to make it conductive, it has to be treated by compounding with other materials, which leads to a waste of resources to a certain extent. Modi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/52B27K3/08A01N37/44A01P21/00
CPCA01N37/44B27K3/08B27K3/52
Inventor 王喜明陈鹏
Owner INNER MONGOLIA AGRICULTURAL UNIVERSITY