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Superhydrophobic wood fiber powder and preparation method thereof

A technology of lignocellulose and lignocellulose, which is applied in the directions of repelling fibers for liquids, fiber processing, plant fibers, etc., can solve the problems of unstable superhydrophobicity, complex preparation process, high cost, and achieve abundant yield and preparation method. Simple, low production cost effect

Inactive Publication Date: 2019-03-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the defects that the existing super-hydrophobic materials have complicated preparation process, high cost, long period, and unstable super-hydrophobic performance, the purpose of the present invention is to improve the utilization value of lignocellulosic biomass raw materials, and at the same time solve the high To solve the cost problem, a superhydrophobic lignocellulosic powder and its preparation method are provided. The superhydrophobic lignocellulosic biomass material fully utilizes the advantages of loose, porous and cheap lignocellulosic biomass raw materials, combined with the existing superhydrophobic technology to prepare superhydrophobic lignocellulosic biomass materials with great application prospects

Method used

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  • Superhydrophobic wood fiber powder and preparation method thereof
  • Superhydrophobic wood fiber powder and preparation method thereof
  • Superhydrophobic wood fiber powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of superhydrophobic coffee grounds material, prepare as follows:

[0033] Coffee grounds grafted silica particles: first measure 5mL of ammonia water and 65mL of ethanol solution, mix them into the conical flask; take another 5mL of tetraethyl silicate dissolved in 25mL of ethanol, make it fully dispersed in the ethanol solution, Add the obtained tetraethyl silicate solution into the above-mentioned Erlenmeyer flask, collect coffee grounds of 40-200 meshes with a standard sieve, weigh 10g of coffee grounds, add them to the above-mentioned Erlenmeyer flask together, and keep magnetic stirring to make it fully React for 12 hours, and the magnetic stirring speed is 300r / min; after the reaction is completed, place the obtained mixture in an oven at 80°C until the water is completely evaporated to dryness, and obtain coffee grounds grafted with silica. see attached figure 1 (b), with figure 1 (a) is the electron microscopic image of untreated coffee grounds raw mate...

Embodiment 2

[0036] A kind of superhydrophobic coffee grounds material, prepare as follows:

[0037] Grafting silica particles with coffee grounds: first measure 5mL of ammonia water and 65mL of ethanol solution, mix them into the Erlenmeyer flask; take another 5mL of tetraethyl silicate and dissolve it in 25mL of ethanol to make it fully dispersed in the ethanol solution, Add the obtained tetraethyl silicate solution into the Erlenmeyer flask mentioned above, collect coffee grounds of 40-200 meshes with a standard sieve, weigh 10 g of coffee grounds, add them to the Erlenmeyer flask mentioned above, and keep magnetic stirring to make it fully React for 12 hours, and the magnetic stirring speed is 400r / min; after the reaction is completed, the obtained mixture is placed in an oven at 80°C until the water is completely evaporated to dryness, and coffee grounds grafted with silica are obtained. Example 1 is similar.

[0038] Superhydrophobic modification was carried out on the prepared coff...

Embodiment 3

[0040] A kind of superhydrophobic coffee grounds material, prepare as follows:

[0041] Grafting silica particles with coffee grounds: first measure 5mL of ammonia water and 65mL of ethanol solution, mix them into the Erlenmeyer flask; take another 5mL of tetraethyl silicate and dissolve it in 25mL of ethanol to make it fully dispersed in the ethanol solution, Add the obtained tetraethyl silicate solution into the Erlenmeyer flask mentioned above, collect coffee grounds of 40-200 meshes with a standard sieve, weigh 10 g of coffee grounds, add them to the Erlenmeyer flask mentioned above, and keep magnetic stirring to make it fully After 12 hours of reaction, the magnetic stirring speed was 400r / min; after the reaction was completed, the obtained mixture was placed in an oven at 80°C until the water was completely evaporated to obtain solid coffee grounds grafted with silica.

[0042] Superhydrophobic modification was carried out on the prepared coffee grounds grafted with sili...

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Abstract

The invention relates to superhydrophobic wood fiber powder and a preparation method thereof, and belongs to the field of development of functional biomass materials. The invention aims at improving the utilization value of wood fiber biomass raw materials and solving the problems of complex preparation process and relatively high cost of superhydrophobic materials. The invention relates to the superhydrophobic wood fiber powder and the preparation method thereof. The preparation method comprises the following steps: firstly, crushing a lignocellulose raw material into powder by using a crusher; secondly, grafting lignocellulose powder prepared in the first step with silica particles; thirdly, adding a lignocellulose powder solid grafted with the silica particles, prepared in the second step, into a silane coupling agent for carrying out superhydrophobic modification to obtain the superhydrophobic wood fiber powder. The superhydrophobic wood fiber powder prepared with the preparation method disclosed by the invention belongs to a high added value product and has the advantages that resource utilization of the wood fiber biomass raw materials is widened and the production cost of ahydrophobic material is reduced. A preparation process is simple and is easy to control.

Description

technical field [0001] The invention belongs to the field of functional biomass material development, and mainly relates to a superhydrophobic wood fiber powder and a preparation method thereof. Background technique [0002] Lignocellulosic biomass is organic matter produced by photosynthesis. Green plants use chlorophyll to convert solar energy into chemical energy through photosynthesis and store it in lignocellulosic biomass. Through certain methods, an environmentally friendly and renewable low-carbon energy can be generated, which has wide sources, abundant reserves, and renewable energy. , low pollution and other advantages, lignocellulosic biomass widely exists in nature, and its main components are cellulose, hemicellulose and lignin. [0003] Lignocellulosic biomass raw materials have the characteristics of high carbon content, low ash content, abundant sources, renewable, wide sources, cheap and easy to obtain, etc., and become the precursors for the preparation o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/79D06M13/517D06M101/04
CPCD06M11/79D06M13/517D06M2101/04D06M2200/12
Inventor 田君飞唐华石聪灿陈广学徐军飞吴静
Owner SOUTH CHINA UNIV OF TECH
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