WO1998048990A1 - Planches fabriquees au moyen de lignine de plantes herbeuses et leur procede de fabrication - Google Patents

Planches fabriquees au moyen de lignine de plantes herbeuses et leur procede de fabrication Download PDF

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Publication number
WO1998048990A1
WO1998048990A1 PCT/JP1998/001938 JP9801938W WO9848990A1 WO 1998048990 A1 WO1998048990 A1 WO 1998048990A1 JP 9801938 W JP9801938 W JP 9801938W WO 9848990 A1 WO9848990 A1 WO 9848990A1
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WIPO (PCT)
Prior art keywords
board
lignin
producing
lignocellulosic
weight
Prior art date
Application number
PCT/JP1998/001938
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English (en)
Japanese (ja)
Inventor
Tsuyoshi Kono
Original Assignee
Tsuyoshi Kono
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tsuyoshi Kono filed Critical Tsuyoshi Kono
Priority to AU70821/98A priority Critical patent/AU7082198A/en
Publication of WO1998048990A1 publication Critical patent/WO1998048990A1/fr

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Classifications

    • 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

Definitions

  • the present invention relates to a board such as a particle board or a fiber board based on a lignocellulosic substance such as wood or herbaceous material, and a method for producing the same.
  • Japanese Patent Publication No. Hei 3-3-1565 discloses a method for producing a board in which sugar or starch is added and subjected to steam treatment.
  • Japanese Patent Application Laid-Open No. 60-30909 discloses a method for producing a board using a lignocellulose substance containing a large amount of free saccharides as a raw material.
  • Japanese Patent Publication No. 59-143338 discloses a method for producing a board using crushed plant leaves as an adhesive.
  • Japanese Patent Publication No. 3-315565 discloses a method using lignin as a plant component. However, this method requires the addition of sugar or starch.
  • the present inventors have previously obtained a board having excellent strength performance without using an adhesive by using a bast fiber plant of the family Aceaceae (International Publication No. WO 96/19332). See No. 8 Public Relations). However, this board has poor water resistance and specific gravity 0.65 g Z c For the lightweight board less than m 3, satisfactory strength was not obtained.
  • An object of the present invention is to provide a board that uses a plant component as a substitute for an adhesive and does not use a synthetic resin adhesive, and has excellent strength performance and water resistance.
  • lignin of the Gramineae plant is extremely effective in bonding lignocellulosic substances.
  • Lignin is industrially produced by extraction from pulp waste liquor, but pulp production in Japan and Western Europe was practically only wood pulp, so conventional lignin utilization research was limited to wood lignin .
  • the present inventors have obtained a board having excellent strength performance and water resistance by effectively using lignin of the grass family.
  • the board of the present invention is a board formed by heating and pressurizing a lignocellulosic substance, to which no adhesive is added, and that the lignin of the Poaceae plant is based on the dry weight of the lignocellulosic substance. It is characterized in that 0.2 to 30% by weight is added.
  • the lignin of the Gramineae plant used in the board of the present invention includes lignin of all Gramineae plants such as rice, wheat, bamboo, sugar cane, ash and kolyan.
  • Such a gramineous plant rhidannin may of course be one directly extracted from a gramineous plant, but one extracted from pulp waste liquid is industrially advantageous.
  • the type of digestion method is the so-called chemical pulping method such as the kraft method, sulfite method, soda method, semi-chemical pulping method, thermomechanical pulping method, organic solvent method. Either of them may be used, but it is particularly preferable to use the craft method and the soda method.
  • the use form of the lignin of the Gramineae plant may be either solid or solution, but it is preferable to make it into a powder and mix it with the lignocellulose substance of the base material.
  • the amount of lignin used in the grass is 0.2 to 30% by weight, preferably 2 to 15% by weight, based on the dry weight of the lignocellulose material used as the base material.
  • the lignocellulosic substance used as the base material of the board of the present invention is any substance mainly composed of cellulose, hemicellulose, and lignin, such as herbs and wood. Of these, the use of kenaf and flax wood is preferred, and the use of kenaf wood is particularly preferred. Board using kenaf xylem not only has excellent water resistance, you exhibit specific gravity from 0.2 to 0.65 also excellent strength properties but lightweight as g / cm 3.
  • Examples of the shape of the lignocellulosic substance include chips, flakes, fibers, powder, and other small pieces, but are not limited thereto.
  • the board using the grass lignin of the present invention is produced by mixing the grass lignin with the lignocellulosic substance and subjecting the mixture to heat and pressure molding.
  • the specific gravity of the board of the present invention varies depending on the application, but when kenaf is used as the base material, the specific gravity is 0.15 to 0.8 gZcm 3 , preferably 0.2 to 0.7 g, cm 3 , Preferably it is 0.4 to 0.65 g / cm 3 .
  • the lignocellulosic materials other than kenaf as substrate 0. 5 to 1. 0 g Roh cm 3, preferably it is 0. 65 ⁇ 0. 8 5 g / cm 3 Demel.
  • the hot press forming of the board of the present invention may be carried out by using an ordinary hot press, but is not limited thereto.
  • an ordinary hot press but is not limited thereto.
  • a steam injection press, a high frequency press, or the like may be used.
  • the heating and pressing temperature is from 180 to 250 ° C, preferably from 210 to 240 ° C. If the molding temperature is lower than 180 ° C, the thermosetting reaction of lignin becomes insufficient, so that it is not preferable.
  • the molding time varies depending on the molding temperature and the type of hot press, but is usually proportional to the thickness of the board, and is preferably 40 to 120 seconds, more preferably 60 to 100 seconds for a thickness of 1 mm. .
  • Molding pressure is mainly different specific gravity and thickness of the boards of interest, but is preferably usually 1 5 ⁇ 60 kgf Zc m 2.
  • the water content of the lignocellulosic substance is preferably 8 to 40%, more preferably 0 to 30%, at the time of molding.
  • the lignocellulosic material in the region occupying 50% by weight of the entire board by dry weight, which is located on the surface layer on both sides of the board has a water content of 15 to 50%.
  • the thermosetting reaction of the lignin of the Gramineae plant effectively proceeds.
  • the water content in the present invention refers to the weight% of water contained in the lignocellulose substance with respect to the dry weight of the lignocellulose substance.
  • the board of the present invention does not use any synthetic resin adhesive, but may use sugar or starch in an amount of 1 to 20% by weight based on the lignocellulosic substance as the base material. Particularly when the lignocellulosic material of the base material is wood, the strength is improved by using sugar or starch in combination.
  • starch flour of a plant containing starch as a main component such as flour may be used.
  • an acid may be added to the lignocellulose substance of the substrate in order to shorten the molding time of the board.
  • the acid may be any of inorganic acids such as sulfuric acid, hydrochloric acid, and phosphoric acid; organic acids such as acetic acid and oxalic acid; and acidic salts such as ammonium chloride. Among them, ammonium chloride is particularly preferable.
  • the reason why the board of the present invention exhibits excellent performance is considered to be due to the special structure of lignin of the grass family.
  • Lignin other than gramineous plants such as wood has a methoxy group at the ortho position of the phenol skeleton, but lignin of gramineous plants does not have a methoxy group.
  • phenol is said to have reactive activity at the ruso or para position, and lignin with a phenol skeleton having no methoxy group at the ortho position is highly reactive it is conceivable that.
  • kenaf wood as a lignocellulosic substance provides a board with better performance because the lignin of the grass family co-condenses with a special component contained in the kenaf wood. Conceivable.
  • a particle board was manufactured as a board.
  • a small piece of lignocellulose material serving as a base material was obtained using a knife ring flaker (P a II man) was used, and flakes processed with a blade of 0.6 mm were used.
  • lignin powder extracted from wheat straw pulp waste liquid by soda digestion was used as the lignin of the grass family.
  • lignin powder extracted from conifer pulp waste liquid by the kraft digestion method was used as wood lignin.
  • the flexural strength for examining the strength performance of the board, and the flexural strength after immersion in boiling water for 2 hours to examine the water resistance (hereinafter the flexural strength when wet) And the expansion coefficient of water absorption thickness were measured.
  • the flexural strength and the flexural strength when wet, respectively '' are the average of the measured values of three test pieces cut to a size of 50 x 200 mm in accordance with ISA 5908 5.5 and JISA 5908 5.9.2. I asked for it.
  • the coefficient of expansion of the water absorption thickness was determined by the average value of the measured values of three test pieces cut into a size of 50 ⁇ 50 mm in accordance with JIS A 5908 5.10.
  • Example 1 and Comparative Examples 1 and 2 below relate to a lightweight board having a specific gravity of about 0.5 gZcm 3 using a kenaf wood part as a base material.
  • the sample was spread by hand in a 220 mm square forming box and subjected to mat forming. Then, a 50 cm square moldable hydraulic press with an electric heater was used, and a 10 mm size spacer was used at a temperature of 220 °. C.
  • the board of the present invention was manufactured by heating and pressing at a pressure of 50 kgf / cm 2 for 15 minutes.
  • the specific gravity of this board was 0.1 S gZcm 3, the flexural strength was 19.6 N / mm 2 , the flexural strength when wet was 11.2 NZmm 2 , and the coefficient of expansion of the water absorption thickness was 6%.
  • Particleboard was produced in the same manner as in Example 1 except that wood lignin was used instead of grass lignin.
  • Particle board was produced in the same manner as in Example 1 except that the dry weight of the kenaf wood part was 240 g and lignin was not used.
  • the specific gravity of this board was 0.49 gZcm 3 , the bending strength was 8.7 N / mm 2 , and the bending strength when wet was 0 NZmm 2 .
  • Examples 2 and 3 and Comparative Examples 3 and 4 below relate to boards using flax wood as a base material.
  • particle board was used in the same manner as in Example 1 except that flax wood was used in an amount of 340 g by dry weight, flax wood was used in a moisture content of 22%, and grass lignin was used in an amount of 17 g. Manufactured.
  • the specific gravity of this board was 0.75 gZcm 3 , the bending strength was 22.4 N / mm 2 , the bending strength when wet was 10.7 NZmm 2 , and the coefficient of expansion of water absorption thickness was 9%.
  • the moisture content of the flax wood part in the area occupying 50% by weight of the whole board in dry weight, which is located on the surface layer on both sides of the board, is 30%, and the dry weight is 50% in the inner layer part of the board
  • a particle board was produced in the same manner as in Example 2, except that the moisture content of the flax wood part occupying 6 wt% was 6%.
  • Particle board was produced in the same manner as in Example 2, except that wood lignin was used instead of the gramineous plant redanin.
  • the specific gravity of the board 0. 75 gZcm 3, bending strength 1 4. 9 N / mm 2, wet flexural strength 4. 3 N / mm 2. Water thickness expansion rate was ⁇ 9% .
  • the moisture content of flax wood was 6%, and urea resin adhesive with a concentration of 60% by weight was replaced by 28.3 g (solid content: 17.Og) instead of lignin, and the concentration was 10% as a hardener.
  • urea resin adhesive with a concentration of 60% by weight was replaced by 28.3 g (solid content: 17.Og) instead of lignin, and the concentration was 10% as a hardener.
  • press temperature of 200 C press A particle board was manufactured in the same manner as in Example 2 except that the rest time was set to 5 minutes.
  • the specific gravity of this board was 0.74 gZcm 3 , the bending strength was 15.2 N / mm 2 , the bending strength when wet was 0 N / mm 2 , and the coefficient of expansion of water absorption thickness was 39%.
  • Example 4 is a board manufactured using wood as a base material and also using lignin and starch in a gramineous plant.
  • Example 2 The same method as in Example 1, except that 340 g of cedar is used as a lignocellulose substance by dry weight, the moisture content is 18%, and 17 g of lignin and 17 g of starch are added and mixed. Manufactured particle board.
  • the specific gravity of this board was 0.1 TS gZcm 3 , the bending strength was 17.2 N / mm 2 , the bending strength when wet was 8.6 N / mm 2 , and the coefficient of expansion of the water absorption thickness was 8%.
  • the board of the present invention does not use a synthetic resin adhesive and does not generate harmful substances.
  • the board of the present invention has excellent mechanical strength.
  • the board of the present invention has excellent water resistance.
  • the board of the present invention using kenaf as a base material is lightweight and has excellent strength performance and water resistance.
  • the board of the present invention can use grass lignin extracted from pulp waste liquor, thereby solving the problem of environmental pollution caused by pulp waste liquor.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

Planches fabriquées par réchauffement de matériau lignocellulosique sous pression élevée afin de les mouler sans utiliser d'adhésif. Ces planches contiennent 0,2 à 30 % en poids, sur la base du poids sec du matériau lignocellulosique, de lignine de riz, ce qui leur confère une résistance mécanique et hydraulique excellente sans évolution de substances nocives, telles que formaldéhyde. Afin de favoriser la réaction thermodurcissante de la lignine, on effectue le moulage sous pression élevée à 180-250 °C pendant le procédé de fabrication de ces planches.
PCT/JP1998/001938 1997-04-30 1998-04-28 Planches fabriquees au moyen de lignine de plantes herbeuses et leur procede de fabrication WO1998048990A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU70821/98A AU7082198A (en) 1997-04-30 1998-04-28 Boards produced with the use of grass plant lignin and process for producing thesame

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP14837897A JPH10305409A (ja) 1997-04-30 1997-04-30 イネ科植物リグニンを使用したボードとその製造方法
JP9/148378 1997-04-30

Publications (1)

Publication Number Publication Date
WO1998048990A1 true WO1998048990A1 (fr) 1998-11-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/001938 WO1998048990A1 (fr) 1997-04-30 1998-04-28 Planches fabriquees au moyen de lignine de plantes herbeuses et leur procede de fabrication

Country Status (4)

Country Link
JP (1) JPH10305409A (fr)
CN (1) CN1094090C (fr)
AU (1) AU7082198A (fr)
WO (1) WO1998048990A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001293706A (ja) * 2000-04-14 2001-10-23 Matsushita Electric Works Ltd パーティクルボード
JP3361819B2 (ja) * 1997-05-05 2003-01-07 剛 河野 接着剤及びそれを使用したボード
JP2011218775A (ja) * 2010-02-10 2011-11-04 Hitachi Chem Co Ltd 木質系建材
JP2011224950A (ja) * 2010-04-19 2011-11-10 Kono Shinsozai Kaihatsu Kk ボードの製造方法
JP2019502580A (ja) * 2015-12-23 2019-01-31 グッドハウト・ホールディング・ベー．フェー．Ｇｏｏｄｈｏｕｔ Ｈｏｌｄｉｎｇ Ｂ．Ｖ． 人工木板材の製造方法
ES2705437A1 (es) * 2018-11-28 2019-03-25 Univ Madrid Politecnica Proceso de fabricacion de tableros a partir de plantas macrofitas con tejido aerenquima y tableros obtenidos a partir de dicho proceso

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009298132A (ja) * 2008-06-12 2009-12-24 Kono Shinsozai Kaihatsu Kk 改良木材及びその製造方法
JP2011144340A (ja) * 2010-01-14 2011-07-28 Kono Shinsozai Kaihatsu Kk エポキシ樹脂
JP5624335B2 (ja) * 2010-02-17 2014-11-12 株式会社フジタ 木質系微細繊維材料の製造方法及びこの木質系微細繊維材料による木質成形体の成形方法
CN103406967B (zh) * 2013-07-30 2015-07-29 有机木材集团有限公司 基于木素胶的制备无甲醛人造板的方法
JP2016074154A (ja) * 2014-10-07 2016-05-12 パナソニックＩｐマネジメント株式会社 繊維ボードおよびその製造方法
JP6299007B1 (ja) * 2016-10-21 2018-03-28 トヨタ紡織株式会社 木質ボード及びその製造方法並びにマット状物
JP6299006B1 (ja) * 2016-10-21 2018-03-28 トヨタ紡織株式会社 切削物、木質材料の製造方法及び木質ボードの製造方法
GB201812291D0 (en) 2018-07-27 2018-09-12 Adaptavate Ltd Building project

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996019328A1 (fr) * 1994-12-22 1996-06-27 Tsuyoshi Kono Planche fabriquee a partir d'un vegetal liberien malvace et procede de fabrication

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4416221Y1 (fr) * 1966-06-09 1969-07-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996019328A1 (fr) * 1994-12-22 1996-06-27 Tsuyoshi Kono Planche fabriquee a partir d'un vegetal liberien malvace et procede de fabrication

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3361819B2 (ja) * 1997-05-05 2003-01-07 剛 河野 接着剤及びそれを使用したボード
JP2001293706A (ja) * 2000-04-14 2001-10-23 Matsushita Electric Works Ltd パーティクルボード
JP2011218775A (ja) * 2010-02-10 2011-11-04 Hitachi Chem Co Ltd 木質系建材
JP2011224950A (ja) * 2010-04-19 2011-11-10 Kono Shinsozai Kaihatsu Kk ボードの製造方法
JP2019502580A (ja) * 2015-12-23 2019-01-31 グッドハウト・ホールディング・ベー．フェー．Ｇｏｏｄｈｏｕｔ Ｈｏｌｄｉｎｇ Ｂ．Ｖ． 人工木板材の製造方法
ES2705437A1 (es) * 2018-11-28 2019-03-25 Univ Madrid Politecnica Proceso de fabricacion de tableros a partir de plantas macrofitas con tejido aerenquima y tableros obtenidos a partir de dicho proceso

Also Published As

Publication number Publication date
AU7082198A (en) 1998-11-24
JPH10305409A (ja) 1998-11-17
CN1094090C (zh) 2002-11-13
CN1254306A (zh) 2000-05-24

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