Wooden sponge oil-absorbing material and preparation method thereof

An oil-absorbing material and sponge technology, which is applied in wood treatment, wood impregnation, separation methods, etc., can solve the problems of poor mechanical properties of cellulose aerogel, unfavorable oil-absorbing material reuse, complicated raw material preparation process, etc., and achieves the reuse performance. Good, good promotion and application prospect, simple and easy preparation method

Inactive Publication Date: 2019-04-12
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the raw material preparation process is complicated and the cost is high
In addition, due to its disordered three-dimensional network structure, cellulose aerogels have poor mechanical properties, are easily damaged by external forces, and have poor structural s

Method used

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  • Wooden sponge oil-absorbing material and preparation method thereof
  • Wooden sponge oil-absorbing material and preparation method thereof
  • Wooden sponge oil-absorbing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: A kind of wooden sponge oil-absorbing material

[0029] Put the block wood with a size of 1.50mm×1.5mm×1.5mm into a hydrogen peroxide solution with a concentration of 30%, and heat it at 60°C for 8 hours to obtain bleached wood;

[0030] Sodium chlorite (NaClO) with a concentration of 2% 2 ) solution, and adjust the pH value to 4.0 with phosphoric acid, immerse the above-mentioned bleached wood in an acidic sodium chlorite solution, and cook at 80°C for 3 hours to remove the lignin component in the wood cell wall; the above-mentioned delignified wood Put it into 8% sodium hydroxide solution, and treat it at 80°C for 8 hours to further remove hemicellulose.

[0031] After the above-mentioned treated wood was washed with distilled water several times, it was frozen in a refrigerator for 8 hours, and then moved to a vacuum freeze dryer for freeze-drying for 30 hours. The temperature of the cold trap was minus 40°C, and the vacuum was 5Pa. The prepared woode...

Embodiment 2

[0036]Embodiment 2: a kind of preparation method of wooden sponge oil-absorbing material, the steps are:

[0037] (1) Wood bleaching: use balsa wood as a raw material, process it into block or flake samples, put it into a hydrogen peroxide solution, and heat it;

[0038] (2) Remove lignin: immerse the above-mentioned bleached wood in acidic sodium chlorite solution and cook for 5 hours;

[0039] (3) Hemicellulose removal: put the above-mentioned delignified wood into sodium hydroxide solution, and treat it at 55°C for 8 hours;

[0040] (4) freeze-drying: the timber after step (3) is processed, puts into freeze-drying 25 hours in the vacuum freeze-drying machine after washing with water;

[0041] (5) Silanization treatment: put the container containing methyltrichlorosilane into the bottom of the airtight container, put the material obtained in step (4) into the airtight container, heat to 80°C for silanization modification, and the treatment time is 3 hours , that is.

Embodiment 3

[0042] Embodiment 3: a kind of preparation method of wooden sponge oil-absorbing material, the steps are:

[0043] (1) Wood bleaching: use balsa wood as a raw material, process it into block or flake samples, put it into a hydrogen peroxide solution, and heat it;

[0044] (2) Removal of lignin: immerse the above-mentioned bleached wood in an acidic sodium chlorite solution and cook for 4 hours;

[0045] (3) Hemicellulose removal: put the above-mentioned delignified wood into sodium hydroxide solution, and treat it at 50-85° C. for 7 hours;

[0046] (4) freeze-drying: the wood after step (3) is processed, puts into vacuum freeze-drying machine freeze-drying 24 hours after water washing;

[0047] (5) Silanization treatment: put the container containing methyltrichlorosilane into the bottom of the airtight container, put the material obtained in step (4) into the airtight container, heat to 90°C for silanization modification, and the treatment time is 1 hour , that is;

[0048...

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Abstract

The invention discloses a wooden sponge oil-absorbing material. The wooden sponge oil-absorbing material is obtained by performing wood bleaching by using light wood as a raw material, removing lignin, removing hemicellulose, performing freeze drying and performing silanization treatment. The invention also discloses a preparation method of the wooden sponge oil-absorbing material. The preparationmethod provided by the invention creatively uses the natural renewable wood as the raw material for the first time to prepare the porous oil-absorbing material through a top-down strategy, is economical, high-efficient, green, environmentally friendly, simple in preparation process, and wide in raw material source, can be produced in a large scale, and has good promotion and application prospects.

Description

technical field [0001] The invention belongs to the technical field of oil-absorbing materials; more specifically, it relates to a wooden sponge oil-absorbing material and a preparation method thereof. Background technique: [0002] With the massive discharge of oily sewage in production and life and the frequent occurrence of offshore oil spill accidents, oil pollution in water has become a major problem that endangers human health and environmental safety. How to achieve efficient oil-water separation has become an urgent problem to be solved. At present, the traditional oil pollution treatment methods mainly include the following: (1) direct combustion method; (2) physical mechanical method, such as deploying oil booms and oil skimmers; (3) chemical treatment method, such as adding oil coagulant and dispersants, etc., to change the physical and chemical properties of oil stains; (4) bioremediation, that is, to use certain microorganisms to decompose oil stains. All of t...

Claims

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Application Information

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IPC IPC(8): C08J9/26C08J9/36C08L1/02B01D17/02B27K5/00B27K5/04B27K3/02
CPCB01D17/0202B27K3/025B27K5/0005B27K5/04C08J9/26C08J9/365C08J2301/02
Inventor 王小青管浩刘君良倪林程志泳孟军旺
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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