CN114131715A

CN114131715A - Wood with strong hygroscopicity and manufacturing method thereof

Info

Publication number: CN114131715A
Application number: CN202111469547.2A
Authority: CN
Inventors: 郭鑫; 许东; 任婷婷; 罗秋艳; 刘治欢; 李青
Original assignee: Central South University of Forestry and Technology
Current assignee: Central South University of Forestry and Technology
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-03-04

Abstract

The invention relates to a wood with strong moisture absorption and a manufacturing method thereof, belonging to a moisture absorption material and a manufacturing process thereof, wherein the composition comprises wood and carbon dots, and the addition amount of the carbon dots is 0.01-0.1% of the mass of the wood. The carbon dots are polyamino carbon-based zero-dimensional materials, and the size is about 4 nm; the carbon dot solution is directly dispersed in the wood activated by the sodium hydroxide, and the wood with strong hygroscopicity is prepared by the technical process of uniform mixing and standing. The invention has simple process, good repeatability and low cost.

Description

Wood with strong hygroscopicity and manufacturing method thereof

Technical Field

The present invention belongs to a solid moisture absorption material, particularly to a wood with strong moisture absorption, and a manufacturing method of the wood with strong moisture absorption.

Background

The solid hygroscopic agent is a solid substance capable of adsorbing water vapor from air, and is also called solid desiccant. The porous substance with large surface area is used for absorbing the moisture of the air by surface adsorption and capillary condensation. The moisture pressure on the surface of the solid moisture absorbent is lower than that of air, so that moisture in the air is absorbed, and the aim of dehumidifying the air is fulfilled.

The most commonly used solid hygroscopic materials are silica gel and calcium chloride. On the psychrometric chart, the air treatment process using a solid desiccant is an isenthalpic temperature rise. When the solid moisture absorbent is contacted with the humid air, the solid moisture absorbent absorbs moisture in the humid air and releases latent heat of vaporization at the same time, so that the temperature of the air is raised, and the enthalpy value of the air before and after dehumidification is unchanged. Hygroscopic materials such as silica gel and calcium chloride are expensive.

Disclosure of Invention

The invention aims to solve the technical problem that the defects of the background technology are overcome, and the strong moisture absorption wood is prepared by dispersing carbon dots into wood, and has many excellent performances such as simple process, good repeatability, low cost and the like.

The invention relates to a wood with strong moisture absorption and a manufacturing method thereof, belonging to a moisture absorption material and a manufacturing process thereof, wherein the composition comprises wood and carbon dots, and the addition amount of the carbon dots is 0.01-0.1% of the mass of the wood. The carbon dots are polyamino carbon-based zero-dimensional materials, and the size is about 4 nm.

The carbon dots can be prepared by the technique of patent application No. 202111028793.4 entitled "carbon dots and their preparation method and use in preparing fluorescent probes targeting nucleoli". Amino phenol and ethylenediamine are used as raw materials, and a hydrothermal method is utilized to prepare the carbon dots with high fluorescence quantum yield in one step.

The preparation method of the wood with strong hygroscopicity takes the wood and carbon dots as raw materials, and prepares a sample through the technological process of dipping and standing. The manufacturing method of the wood with strong hygroscopicity has the advantages of simple process, good repeatability and low cost.

Detailed Description

Example 1

Mixing carbon points and water according to the mass ratio of 1:100, dispersing into the wood activated by sodium hydroxide, and carrying out the technological process of dipping and standing to obtain the finished product. The addition amount of the carbon dots is 0.01 percent of the mass of the wood. The wood can be used for absorbing moisture in air.

Example 2

Mixing carbon points and water according to the mass ratio of 1:100, dispersing into the wood activated by sodium hydroxide, and carrying out the technological process of dipping and standing to obtain the finished product. The addition amount of the carbon dots is 0.1 percent of the mass of the wood. The wood can be used for absorbing moisture in air.

Example 3

Mixing carbon points and water according to the mass ratio of 1:100, dispersing into the wood activated by sodium hydroxide, and carrying out the technological process of dipping and standing to obtain the finished product. The addition amount of the carbon dots is 0.05 percent of the mass of the wood. The wood can be used for absorbing moisture in air.

Claims

1. A highly hygroscopic wood comprises wood and carbon dots; the carbon dots are polyamino carbon-based zero-dimensional materials, and the size of the carbon dots is about 4 nm; the wood is wood activated by sodium hydroxide; the addition amount of the carbon dots is 0.01-0.1% of the mass of the wood.

2. A method for preparing the highly hygroscopic wood as claimed in claim 1, wherein the finished product is obtained by impregnating the wood with carbon dots and sodium hydroxide activated as raw materials and then allowing the impregnated wood to stand still.