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A kind of multifunctional metallized wood material and its preparation method and application

A wood material and metallization technology, applied in impregnated wood, wood impregnation, wood processing equipment, etc., can solve problems such as difficult synthesis of metallized wood, and achieve the effect of rich raw material sources, good porous structure, and excellent compressibility

Active Publication Date: 2021-06-04
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some polymerization methods, such as surface-initiated atom transfer radical polymerization (SI-ATRP), must be reacted for several hours in an inert atmosphere, thus, it is difficult to scale up their application to synthesize metallized wood.

Method used

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  • A kind of multifunctional metallized wood material and its preparation method and application
  • A kind of multifunctional metallized wood material and its preparation method and application
  • A kind of multifunctional metallized wood material and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The preparation method of the multifunctional metallized wood material of the present embodiment comprises the following steps:

[0029] (1) Cut about 20g of basswood into pieces, soak in 500mL boiling mixed aqueous solution containing 6g of sodium hydroxide and 18g of sodium sulfite, take it out after reacting for 10h, and then soak it in boiling sub Sodium chlorate solution, until the wood turns white, fully rinse the wood with deionized water after the reaction, and freeze-dry to obtain porous wood rich in cellulose;

[0030] (2) Weigh about 5g of porous wood, soak it in 200mL deionized water with a pH of about 10, then add about 2mmol of sodium hypochlorite, react for 2 hours, add 0.5mol / L hydrochloric acid until the pH of the solution is neutral to terminate the reaction, and then use Soak the wood in 0.5mol / L hydrochloric acid, wash the wood several times with deionized water, and freeze-dry to obtain oxidized porous wood;

[0031] (3) Weigh about 2 g of oxidized...

Embodiment 2

[0035] The preparation method of the multifunctional metallized wood material of the present embodiment comprises the following steps:

[0036] (1) Cut about 10g of basswood into pieces, soak it in 300mL of boiling mixed aqueous solution containing 10g of sodium hydroxide and 15g of sodium sulfite, take it out after reacting for 12 hours, and then soak it in boiling 0.5% sodium sulfite Sodium chlorate solution, until the wood turns white, fully rinse the wood with deionized water after the reaction, and freeze-dry to obtain porous wood rich in cellulose;

[0037] (2) Weigh about 5g of porous wood, soak it in 200mL of deionized water with a pH of about 10, then add about 3mmol of sodium hypochlorite, react for 3 hours, add 0.5mol / L hydrochloric acid until the pH of the solution is neutral to terminate the reaction, and then use Soak wood in 0.5mol / L hydrochloric acid solution, wash wood several times with deionized water, and obtain oxidized porous wood after freeze-drying;

...

Embodiment 3

[0041] The preparation method of the multifunctional metallized wood material of the present embodiment comprises the following steps:

[0042] (1) Cut about 10g of basswood into pieces, soak in 300mL of boiling mixed aqueous solution containing 10g of sodium hydroxide and 15g of sodium sulfite, react for about 12 hours, take it out, and then soak in boiling water with a mass fraction of about 0.5% In the sodium chlorite solution, until the wood turns white, the wood is fully rinsed with deionized water after the reaction, and after freeze-drying, the porous wood rich in cellulose is obtained;

[0043] (2) Weigh about 3g of porous wood, soak it in 100mL deionized water with a pH of about 10, then add about 0.6mmol of sodium hypochlorite, react for 5 hours, add 0.2mol / L hydrochloric acid until the pH of the solution is neutral to terminate the reaction, then Soak the wood with 0.2mol / L hydrochloric acid solution, wash the wood several times with deionized water, and freeze-dry ...

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Abstract

The invention belongs to the field of natural polymer modified materials, and in particular relates to a method for preparing multifunctional metallized wood materials by using wood. The preparation method of the present invention firstly processes the wood through alkali treatment and bleaching, removes hemicellulose and lignin, and obtains porous wood rich in cellulose and excellent in elasticity; then undergoes a simple oxidation reaction on the porous wood to obtain oxidized porous wood; and then The oxidized porous wood and the functional polymer polyethyleneimine are cross-linked with glutaraldehyde to obtain a polymer wood with chelated heavy metal ions; finally, the polymer wood is prepared by electroless metal deposition to obtain a porous, stable metal layer, Metallized wood material with good compressive properties. The metallized wood material prepared by the present invention has excellent catalysis and cyclic catalysis, good electrical conductivity, and outstanding antibacterial properties. It is used in the fields of catalysis, electricity, and antibacterial, which is useful for broadening the application of natural biomass resource wood and improving its Added value, with positive value.

Description

technical field [0001] The invention belongs to the field of natural polymer modified materials, and specifically relates to a multifunctional metallized wood material with catalytic, conductive and antibacterial properties, a preparation method and application thereof. Background technique [0002] Metallized materials with large surface areas have attracted extensive attention due to their potential applications in electrochemical energy conversion and storage, catalytic degradation, antibacterial, etc. In particular, nanoscale metal particles and wires have been shown to be promising candidates in the fields of catalytic degradation, antibacterial, and electrical conduction. However, these nanoscale metal particles and wires are prone to irreversible aggregation and difficult to be reused, seriously affecting their applications in the fields of catalysis, conductivity, and antibacterial. To solve these problems, a major strategy is to immobilize these nanometals on vario...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/32B27K3/50
CPCB27K3/32B27K3/50
Inventor 杨宇楚状状杨卓鸿李维桐卢梁美彭粤海刘飞
Owner SOUTH CHINA AGRI UNIV
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