Cellulose nanofiber plate and preparation method thereof

A cellulose fiber and nanofiber technology, applied in the field of cellulose nanofiber board and its preparation, can solve the problems of complex preparation process, uneven quality and high price, and achieve the effect of thick color, stable size and performance, and light weight.

Inactive Publication Date: 2018-03-30
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although most of the existing cellulose nanofiber boards have the characteristics of light weight and high strength, the preparation process is complicated, the price is high, and the quality is uneven, which is difficult to meet the needs of industrialized preparation of lightweight equipment and components.

Method used

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  • Cellulose nanofiber plate and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A cellulose nanofiber board, characterized in that the cellulose nanofiber board is made of the following five components, and the weight percentages of each component are respectively: 50% of cellulose nanofiber, 42% of ultra-high molecular weight polyethylene, Nano copper powder 5%, polyvinyl alcohol 1%, color masterbatch 2%.

[0035] The ultra-high molecular weight polyethylene is polyethylene micropowder with a molecular weight ≥ 8 million, the particle size of the ultra-high molecular weight polyethylene is ≤ 25 μm, and the specific gravity is 0.9 g / cm 3 , Water absorption <0.01%.

[0036] A preparation method of cellulose nanofiber board, comprising the following steps:

[0037]Step 1: Extraction of cellulose fibers: with the help of conventional extraction methods, the bamboo chips are extracted four times with the mixed solution of benzene, alcohol, sodium hydroxide solution, acetic acid and hydrogen peroxide, and separated, dried and dried. Get cellulose to s...

Embodiment 2

[0043] A cellulose nanofiber board, characterized in that the cellulose nanofiber board is made of the following five components, and the weight percentages of each component are respectively: 58% of cellulose nanofiber, 40% of ultra-high molecular weight polyethylene, Nano copper powder 1%, polyvinyl alcohol 0.5%, color masterbatch 0.5%.

[0044] The ultra-high molecular weight polyethylene is polyethylene micropowder with a molecular weight ≥ 8 million, the particle size of the ultra-high molecular weight polyethylene is ≤ 25 μm, and the specific gravity is 0.95 g / cm 3 , Water absorption <0.01%.

[0045] A preparation method of cellulose nanofiber board, comprising the following steps:

[0046] Step 1: Extraction of cellulose fibers: with the help of conventional extraction methods, the bamboo chips are extracted four times with the mixed solution of benzene, alcohol, sodium hydroxide solution, acetic acid and hydrogen peroxide, and separated, dried and dried. Get cellulos...

Embodiment 3

[0052] A cellulose nanofiber board, characterized in that the cellulose nanofiber board is made of the following five components, and the weight percentages of each component are respectively: 50% of cellulose nanofibers, 45% of ultra-high molecular weight polyethylene, Nano copper powder 4.899%, polyvinyl alcohol 0.1%, color masterbatch 0.001%.

[0053] The ultra-high molecular weight polyethylene is polyethylene micropowder with a molecular weight ≥ 8 million, the particle size of the ultra-high molecular weight polyethylene is ≤ 25 μm, and the specific gravity is 0.9 g / cm 3 , Water absorption <0.01%.

[0054] A preparation method of cellulose nanofiber board, comprising the following steps:

[0055] Step 1: Extraction of cellulose fibers: with the help of conventional extraction methods, the bamboo chips are extracted four times with the mixed solution of benzene, alcohol, sodium hydroxide solution, acetic acid and hydrogen peroxide, and separated, dried and dried. Get ce...

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Abstract

The invention discloses a cellulose nanofiber plate and a preparation method thereof. The cellulose nanofiber plate is prepared from five components by weight percentage: of each component is: 50%-58%of cellulose nanofiber, 40%-45% of ultra-high molecular weight polyethylene, 1%-5% of nano copper powder, 0.1%-1% of polyvinyl alcohol, and 0.001%-2.0% of color masterbatch. The preparation methods include the following five steps: cellulose fiber extraction, cellulose nanofiber preparation, cellulose nanofiber alloying, die pressing forming and microwave heat treatment. The specific gravity of the cellulose nanofiber plate prepared by the method provided by the invention is only 12%-16% of steel, and the strength can reach 5-6 times that of steel, the color is adjustable, the cellulose nanofiber plate is color-fast and renewable, has cost performance superior to carbon fiber materials, and is an ideal engineering material for manufacturing of lightweight equipment and components.

Description

technical field [0001] The invention belongs to the field of new materials, and in particular relates to a cellulose nanofiber board and a preparation method thereof. Background technique [0002] Cellulose nanofiber board is a kind of environmentally friendly bio-based material with a wide range of uses, so it has become the focus of people's research. However, although most of the existing cellulose nanofiber boards have the characteristics of light weight and high strength, the preparation process is complicated, the price is high, and the quality is uneven, so it is difficult to meet the needs of industrialized preparation of lightweight equipment and components. Therefore, is it possible to develop a simple and feasible preparation process based on cheap carbon sink resources (such as crop straw, bamboo and wood debris) to produce cellulose nanofiber boards with light weight, high strength, and moderate price to meet the needs of lightweight equipment and The requireme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/02C08L23/06C08L29/04C08K3/08B27K5/00B27N1/00B27N3/04B27N3/08
CPCB27K5/0055B27N1/00B27N3/04B27N3/08C08K2003/085C08K2201/011C08L1/02C08L2205/03C08L2207/068C08L23/06C08L29/04C08K3/08
Inventor 吴庆定王奇刘克非张红何玉琴刘坤键丁定成袁建刘俊怀李佩
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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