CN110405900B - Method for preparing environment-friendly biological board by taking furfural residue of lignocellulose as raw material - Google Patents

Method for preparing environment-friendly biological board by taking furfural residue of lignocellulose as raw material Download PDF

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CN110405900B
CN110405900B CN201810392100.1A CN201810392100A CN110405900B CN 110405900 B CN110405900 B CN 110405900B CN 201810392100 A CN201810392100 A CN 201810392100A CN 110405900 B CN110405900 B CN 110405900B
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lignocellulose
furfural
board
environment
biological
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CN110405900A (en
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张宗超
石振
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Dalian Institute of Chemical Physics of CAS
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Dalian Institute of Chemical Physics of CAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/06—Softening or hardening of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/08—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood fibres, e.g. produced by tearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B27N1/006—Pretreatment of moulding material for increasing resistance to swelling by humidity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/10—Moulding of mats
    • B27N3/12—Moulding of mats from fibres

Abstract

The invention discloses a method for preparing an environment-friendly biological board by taking furfural residues of lignocellulose as raw materials. The performance index of the biological plate reaches or exceeds the requirements of GB/T11718-3The elastic modulus is 14.57-37.22MPa, and the plastic modulus is 2859-6099 MPa. The method can change wastes in the process of preparing the furfural from the lignocellulose into valuable, the performance index of the board is comparable to that of the existing board, the board does not contain formaldehyde and is moisture-proof, the production process is simple, the problem of environmental pollution caused by the wastes in the process of preparing the furfural from the lignocellulose is solved, and the economy is better.

Description

Method for preparing environment-friendly biological board by taking furfural residue of lignocellulose as raw material
Technical Field
The invention belongs to the technical field of energy, and particularly relates to a method for preparing an environment-friendly biological board by taking furfural residues of lignocellulose as raw materials.
Background
Under the large environment that petroleum resources are increasingly exhausted and straw treatment is increasingly urgent, the protection of environment and forest resources is gradually increased in each country, the social demand on glue-free formaldehyde-free environment-friendly biological boards is continuously increased, the research strength on producing environment-friendly biological boards by biomass and biomass chemical waste is increased in each country, the environment-friendly biological boards prepared by taking lignocellulose furfural residues as raw materials are novel environment-friendly biological boards manufactured by taking lignocellulose furfural waste for producing furfural as raw materials, various physical and chemical indexes of the novel environment-friendly biological boards meet the index requirements of medium-density fiberboards, and no adhesive is added in the environment-friendly biological boards with zero formaldehyde emission, so that the forest resources are protected, the environment-friendly requirements are met, and the environment-friendly biological boards have excellent processing performance.
Disclosure of Invention
The invention aims to provide a method for preparing an environment-friendly biological board by taking furfural residues of lignocellulose as raw materials.
The invention relates to a method for preparing an environment-friendly biological board by taking furfural residue of lignocellulose as a raw material, which is realized by the following measures:
the method takes furfural residues which are wastes in a process of preparing furfural from lignocellulose as main raw materials, and prepares the formaldehyde-free environment-friendly biological board by the processes of soaking, grinding, prepressing, hot pressing and the like in sequence.
The soaking is to soak the lignocellulose furfural residues and the aqueous solution for 1 to 50 hours (preferably for 4 to 36 hours) at a mass ratio of 1:0.5 to 1:100 so as to fully soften and swell the fibers. The aqueous solution includes, but is not limited to, pure water, aqueous zinc chloride solution, aqueous glycerin solution, aqueous magnesium chloride solution, and the like.
The grinding is to carry out solid-liquid separation on the soaked lignocellulose furfural residue slurry, wherein the solid is ground for 0.5 to 15 hours by ball milling at the rotating speed of 150-; the length of the milled fiber is 0.5-30mm, and the liquid is recycled.
The prepressing is to uniformly lay the ground swelling lignocellulose furfural residues in a mould and prepress for 2-5min under the pressure of 1-7Mpa (preferably 3-6 Mpa).
The hot pressing mode is intermittent flat pressing, and the pressing conditions are as follows: the pressure is 1-10Mpa, the hot-pressing temperature is 60-170 ℃, and the hot-pressing time is 1-15 h; the preferred conditions are: the pressure is 4-7Mpa, the hot pressing temperature is 90-150 ℃, and the hot pressing time is 3-10 h.
The performance indexes of the environment-friendly biological board prepared by taking the lignocellulose furfural residues as the raw materials are as follows: the density is 0.3-1.7g/cm3The elastic modulus is 14.57-37.22MPa, and the plastic modulus is 2859-6099 MPa.
The invention has the advantages that:
compared with other technologies, the invention has the following advantages: the environment-friendly biological board not only meets or exceeds the performance requirements of the medium-density fiberboard on various performance indexes such as elastic modulus, static bending strength, internal bonding strength, surface bonding strength, water absorption thickness expansion rate and the like. And the formaldehyde is zero-emission, no adhesive is used, no chemical reagent is added, the ecological environment is protected, the environmental protection requirement is met, and the social benefit is increased.
Drawings
FIG. 1 shows the appearance effect of the final formed biological board of the lignocellulosic furfural residue of the present invention;
FIG. 2 shows the tensile test performance data of the final formed biological board of the lignocellulose furfural residue on an MWW-10E type artificial board universal tester.
Detailed Description
The present invention will be further described in detail with reference to the following specific examples, which are provided for illustration only and are not intended to limit the scope of the present invention.
Example 1
The invention will be further described in detail with reference to the following examples: drying the residual furfural residue in the process of producing furfural from lignocellulose, and drying the dried furfural residue (with water content)<10%) and pure water at a ratio of 1:15(w/w) for 4h, so that the fibers are sufficiently softened and swollen. And (3) milling and decomposing the soaked furfural residues for 1h by using a ball mill at the rotating speed of 300rpm, wherein the length of fibers in the milled and swelled furfural residues is 0.5-30 mm. Uniformly paving the furfural residues which are swelled after being ground in a mould, and prepressing for 2-5min under the pressure of 3 Mpa. And then, under the working conditions that the pressure is 4Mpa, the hot pressing temperature is 90 ℃ and the hot pressing time is 3 hours, putting the ground lignocellulose furfural residues into a mold for compression molding. And then taking out the hot-press formed biological plate and cutting the biological plate into different sizes according to the application. The above example is a process for preparing an environmentally friendly bio-sheet. The appearance effect morphology of the biological board finally formed by the lignocellulose furfural residue is shown in figure 1, and the tensile test performance data of the biological board finally formed by the lignocellulose furfural residue on an MWW-10E type artificial board universal testing machine is shown in figure 2. The performance indexes of the environment-friendly biological board prepared by taking the lignocellulose furfural residues as the raw materials are as follows: the density was 0.79g/cm3The modulus of elasticity was 26.76MPa, and the modulus of plasticity was 4953 MPa.
Example 2
The invention will be further described in detail with reference to the following examples: drying the residual furfural residue in the process of producing furfural from lignocellulose, and drying the dried furfural residue (with water content)<10%) and pure water at a ratio of 1:0.5(w/w) for 50h, so that the fibers are sufficiently softened and swollen.And (3) milling and decomposing the soaked furfural residues for 6 hours at the rotating speed of 550rpm by ball milling, wherein the fiber length in the milled and swelled furfural residues is 0.5-30 mm. Uniformly paving the furfural residues which are swelled after being ground in a mould, and prepressing for 2-5min under the pressure of 6 Mpa. And then, under the working conditions that the pressure is 7Mpa, the hot pressing temperature is 150 ℃ and the hot pressing time is 10 hours, putting the ground lignocellulose furfural residues into a mold for compression molding. And then taking out the hot-press formed biological plate and cutting the biological plate into different sizes according to the application. The above example is a process for preparing an environmentally friendly bio-sheet. The appearance effect morphology of the biological board finally formed by the lignocellulose furfural residue is shown in figure 1, and the tensile test performance data of the biological board finally formed by the lignocellulose furfural residue on an MWW-10E type artificial board universal testing machine is shown in figure 2. The performance indexes of the environment-friendly biological board prepared by taking the lignocellulose furfural residues as the raw materials are as follows: the density was 1.7g/cm3The elastic modulus was 37.22MPa, and the plastic modulus was 6099 MPa.
Example 3
The invention will be further described in detail with reference to the following examples: drying the residual furfural residue in the process of producing furfural from lignocellulose, and drying the dried furfural residue (with water content)<10%) and 10 wt% ZnCl2After the aqueous solution is soaked for 1h at the ratio of 1:5(w/w), the fibers are fully softened and swollen. And (3) milling and decomposing the soaked furfural residues for 6 hours at the rotating speed of 550rpm by ball milling, wherein the fiber length in the milled and swelled furfural residues is 0.5-30 mm. Uniformly paving the furfural residues which are swelled after being ground in a mould, and prepressing for 2-5min under the pressure of 3 Mpa. And then, under the working conditions that the pressure is 7Mpa, the hot pressing temperature is 90 ℃ and the hot pressing time is 3 hours, putting the ground lignocellulose furfural residues into a mold for compression molding. And then taking out the hot-press formed biological plate and cutting the biological plate into different sizes according to the application. The above example is a process for preparing an environmentally friendly bio-sheet. The appearance effect morphology of the biological board finally formed by the lignocellulose furfural residue is shown in figure 1, and the tensile test performance data of the biological board finally formed by the lignocellulose furfural residue on an MWW-10E type artificial board universal testing machine is shown in figure 2. The invention uses lignocelluloseThe performance indexes of the environment-friendly biological board prepared by taking the furfural residue as a raw material are as follows: the density was 0.65g/cm3The elastic modulus was 18.75MPa, and the plastic modulus was 3878 MPa.
Example 4
The invention will be further described in detail with reference to the following examples: drying the residual furfural residue in the process of producing furfural from lignocellulose, and drying the dried furfural residue (with water content)<10%) and pure water at a ratio of 1:10(w/w) for 6h, so that the fibers are sufficiently softened and swollen. And (3) milling and decomposing the soaked furfural residues for 4 hours at the rotating speed of 500rpm by using a ball mill, wherein the length of fibers in the milled and swelled furfural residues is 0.5-30 mm. Uniformly paving the furfural residues which are swelled after being ground in a mould, and prepressing for 2-5min under the pressure of 6 Mpa. And then, under the working conditions that the pressure is 7Mpa, the hot pressing temperature is 120 ℃ and the hot pressing time is 10 hours, putting the ground lignocellulose furfural residues into a mold for compression molding. And then taking out the hot-press formed biological plate and cutting the biological plate into different sizes according to the application. The above example is a process for preparing an environmentally friendly bio-sheet. The appearance effect morphology of the biological board finally formed by the lignocellulose furfural residue is shown in figure 1, and the tensile test performance data of the biological board finally formed by the lignocellulose furfural residue on an MWW-10E type artificial board universal testing machine is shown in figure 2. The performance indexes of the environment-friendly biological board prepared by taking the lignocellulose furfural residues as the raw materials are as follows: the density was 1.2g/cm3The elastic modulus was 30.82MPa, and the plastic modulus was 5693 MPa.
Example 5
The invention will be further described in detail with reference to the following examples: drying the residual furfural residue in the process of producing furfural from lignocellulose, and drying the dried furfural residue (with water content)<10%) and 10 wt% glycerol solution at a ratio of 1:5(w/w) for 3h to sufficiently soften and swell the fiber. And (3) milling and decomposing the soaked furfural residues for 6 hours at the rotating speed of 550rpm by ball milling, wherein the fiber length in the milled and swelled furfural residues is 0.5-30 mm. Uniformly paving the furfural residues which are swelled after being ground in a mould, and prepressing for 2-5min under the pressure of 3 Mpa. Then under the working conditions that the pressure is 7Mpa, the hot pressing temperature is 90 ℃ and the hot pressing time is 3 hoursAnd (3) putting the furfural residue after grinding and decomposing the lignocellulose into a mould for compression molding. And then taking out the hot-press formed biological plate and cutting the biological plate into different sizes according to the application. The above example is a process for preparing an environmentally friendly bio-sheet. The appearance effect morphology of the biological board finally formed by the lignocellulose furfural residue is shown in figure 1, and the tensile test performance data of the biological board finally formed by the lignocellulose furfural residue on an MWW-10E type artificial board universal testing machine is shown in figure 2. The performance indexes of the environment-friendly biological board prepared by taking the lignocellulose furfural residues as the raw materials are as follows: the density was 0.53g/cm3The elastic modulus is 14.57MPa, and the plastic modulus is 2859 MPa.

Claims (3)

1. A method for preparing environment-friendly biological boards by taking furfural residues of lignocellulose as raw materials is characterized in that the method takes furfural residues of lignocellulose as main raw materials, and formaldehyde-free environment-friendly biological boards are manufactured by the processes of soaking, grinding and hot pressing in sequence;
soaking the lignocellulose furfural residues and an aqueous solution or pure water for 1-50h in a mass ratio of 1: 0.5-100 to fully soften and swell the fibers;
the aqueous solution comprises an aqueous zinc chloride solution, an aqueous glycerol solution or an aqueous magnesium chloride solution;
the grinding is to firstly carry out solid-liquid separation on the soaked furfural residue slurry of the lignocellulose, wherein the solid is ground for 0.5 to 15 hours by ball milling at the rotating speed of 150-600rpm, the length of the ground fiber is 0.5 to 30mm, and the liquid is recycled; uniformly paving the furfural residues of the ground swelling lignocellulose in a mold, and prepressing for 2-5min under the pressure of 3-6 Mpa;
the hot pressing mode is intermittent flat pressing, and the pressure is 4-7 Mpa; the hot pressing temperature is 90-150 ℃; the hot pressing time is 3-10 h.
2. The method for preparing the environment-friendly biological board by taking the furfural residues of lignocellulose as the raw material according to claim 1, wherein the furfural residues of lignocellulose and the aqueous solution are preferably soaked for 4-36h in a mass ratio of 1: 5-15.
3. The method for preparing environment-friendly biological boards by using lignocellulose furfural residues as raw materials as claimed in claim 1, wherein the solid is ground by ball milling for 1-6h preferably at the rotation speed of 300-.
CN201810392100.1A 2018-04-27 2018-04-27 Method for preparing environment-friendly biological board by taking furfural residue of lignocellulose as raw material Active CN110405900B (en)

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CN111892826B (en) * 2020-07-24 2022-01-04 中国科学院山西煤炭化学研究所 Furfural residue block material, preparation method and application
CN113771173B (en) * 2021-09-15 2023-09-08 内蒙古工业大学 Preparation method of completely degradable coating fiberboard based on soybean straw

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JPS6030309A (en) * 1983-07-07 1985-02-15 Ota Shoji Manufacture of composite product from lignocellulose material
CN101717237A (en) * 2009-11-11 2010-06-02 许永来 Energy-saving and environment-friendly building material and preparation method thereof
CN101949112B (en) * 2010-09-30 2013-03-13 甘肃赫原生物制品有限公司 Method for preparing environmentally-friendly flame retardant fiberboard by utilizing xylose waste residue
CN102632535B (en) * 2012-04-10 2015-04-29 江南大学 Preparation method of aldehyde-free artificial board
CN103213181A (en) * 2013-04-19 2013-07-24 中南林业科技大学 Method for manufacturing non-glued particle board made of agricultural product residua and used as structural material
CN106985246A (en) * 2017-03-28 2017-07-28 常州大学 A kind of preparation method of anti-corrosion type Formaldehyde Free Wood-based Panel
CN107652472A (en) * 2017-10-27 2018-02-02 大新县科学技术情报研究所 A kind of method that bagasse prepares fiberboard
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CN108890847A (en) * 2018-06-29 2018-11-27 广西浙缘农业科技有限公司 A kind of preparation process of manioc waste base wood-based plate

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