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WO2000025998A1 - Panneaux mixtes composes de paille cerealiere et d'une resine catalysee par un acide - Google Patents

Panneaux mixtes composes de paille cerealiere et d'une resine catalysee par un acide Download PDF

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Publication number
WO2000025998A1
WO2000025998A1 PCT/US1999/026219 US9926219W WO0025998A1 WO 2000025998 A1 WO2000025998 A1 WO 2000025998A1 US 9926219 W US9926219 W US 9926219W WO 0025998 A1 WO0025998 A1 WO 0025998A1
Authority
WO
WIPO (PCT)
Prior art keywords
acid
resin
composite panel
cereal grain
formaldehyde
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US1999/026219
Other languages
English (en)
Inventor
Michael J. Riebel
Kenneth D. Roos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Phenix Biocomposites LLC
Original Assignee
Phenix Biocomposites LLC
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 Phenix Biocomposites LLC filed Critical Phenix Biocomposites LLC
Priority to AU16096/00A priority Critical patent/AU1609600A/en
Publication of WO2000025998A1 publication Critical patent/WO2000025998A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/14—Layered products comprising a layer of synthetic resin next to a particulate layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/42—Layered products comprising a layer of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/16—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer formed of particles, e.g. chips, powder or granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/24—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20
    • E04C2/246—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20 combinations of materials fully covered by E04C2/16 and E04C2/20
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/70—Scrap or recycled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2317/00—Animal or vegetable based

Definitions

  • the present invention relates to the use of an acid-catalyzed resin system in the manufacture of composite panels made out of cereal grain straws.
  • MDI is primarily used for agriculture particleboard as it has a very good affinity to bond most materials together including wood, agricultural fibers, and these materials to metal, plastic, or wood. MDI's tenacity to bond to metal, however, is one of the pitfalls of MDI. Thus, expensive and messy release agents must be used to ensure that the MDI does not stick the particleboard furnish to the metal. Also, the cost of MDI results in a finished particleboard panel that is slightly higher in cost than typical wood-based particleboards. It would therefore be desirable to employ other resin systems that are easier to use.
  • composite panel includes, but is not limited to, fiberboard (e.g., medium or high density), particleboard, and structural panels. These panels can be used in manufacturing a wide variety of products, including laminates.
  • panels of the present invention have properties that are comparable to, or exceed, American National Standards Institute (ANSI) standards for the specific panel types.
  • ANSI American National Standards Institute
  • the processing of these panels in a manufacturing facility is simplified by negating the use of release agents associated with MDI, for example. It is commonly accepted in the composite industry that unmodified wheat straw particles can only be bonded with an isocyanate-based resin.
  • an acid-catalyzed resin system that includes, for example, a phenolic resin
  • wheat straw in the manufacturing of a composite panel
  • a product that meets or exceeds industry standards is produced.
  • an isocyanate resin is used in the core of the panel and the acid-catalyzed resin is used in the faces of the panel.
  • the present invention is directed to composite panels (e.g., particleboard) made from a cereal grain straw (e.g., wheat straw) and an acid- catalyzed resin system, optionally with an isocyanate resin, and methods of producing such products.
  • the invention provides a composite panel comprising a cereal grain straw and an acid-catalyzed resin.
  • the panel can include a homogeneous distribution of the cereal grain straw and the acid-catalyzed resin.
  • it can include a core and two face layers, wherein at least one face layer comprises an acid-catalyzed resin.
  • the core and the two face layers can include the same acid-catalyzed resin, typically and preferably, the core includes an isocyanate resin.
  • the cereal grain straw is selected from the group consisting of wheat, oat, rice, barley, millet, rye, triticum grasses, prairie grasses, flax, cannola, and combinations thereof.
  • the acid-catalyzed resin is prepared from a resin selected from the group consisting of phenol formaldehyde, melamine, melamine formaldehyde, phenol-melamine formaldehyde, melamine-urea formaldehyde, melamine-urea-phenol formaldehyde, urea formaldehyde, and combinations thereof.
  • the acid-catalyzed resin is prepared from an acid selected from the group consisting of formic acid, fumeric acid, an aromatic sulfonic acid, sulfuric acid, and combinations thereof.
  • the present invention provides a composite panel comprising a core that includes a cereal grain straw and an isocyanate resin, and two face layers that include a cereal grain straw and an acid-catalyzed resin.
  • the present invention also provides methods for producing composite panels (e.g., particleboards) of the present invention.
  • a preferred method includes: combining cereal grain straw and at least one acid-catalyzed resin system; and applying sufficient pressure and temperature to yield a pressed composite panel.
  • the temperature of pressing comprises a temperature of about 300°F to about 380°F.
  • the pressure used is sufficient to obtain the desired thickness and density of the panel.
  • the density is about 42 pcf to about 52 pcf.
  • Phenolic resins such as phenol formaldehyde resins
  • Phenolic resins are the dominant resins used in wood hardboard, oriented strand board, and laminated veneer lumber. These resins provide a strong bond in a dry environment. They also provide stability in an aqueous environment over a period of several hours. Phenol formaldehyde liquids have an affinity for wood surfaces, and in the presence of heat condense into a three-dimensionally crosslinked network to provide bonding. When these resins are used with cereal grain straws, however, the curing action or crosslinking is compromised to the point where curing is significantly slower or does not happen.
  • Such resins e.g., phenol formaldehyde and urea formaldehyde resins
  • Such resins are typically "alkaline refined” as they are produced with an alkaline catalyst and a molar excess of formaldehyde.
  • a non-pH sensitive resin like MDI bonds cereal grain straw well to form particleboard.
  • the term "cereal grain straw” includes the stems from a wide variety of grain crops commonly used for food and feed sources.
  • Some examples of such cereal grain straws include, but are not limited to, wheat (summer, winter, durum, semolina, etc.), oat, rice, barley, millet, rye, the triticum genus of cereal grasses, prairie grasses of the plains states, flax, and cannola.
  • the outer layer of the stems of such cereal grain straws is known to inhibit their bonding with standard wood-based particleboard resins. This is believed to be due to the presence of silica-containing and/or waxy materials characteristic of the fiber. Such materials can be removed by pressure refining the fiber.
  • Such pressure-refined fibers are typically only used in products such as medium density fiberboard or hardboard and are not typically used in the production of particleboard. This process, however, is undesirable because the pressure refining requires expensive equipment, high amounts of energy that increases costs, and redrying of the fully saturated fiber.
  • cereal grain straw that may or may not be pressure-refined can be used in the production of the composite panels of the present invention, although cereal grain straw that is not pressure-refined, but is mechanically refined, is preferred.
  • Such untreated cereal grain straws can be ground to the desired particle size range by a number of methods, including, for example, hammer milling, chopping, knife refining, and grinding.
  • “furnish” refers to cereal grain straw that has been reduced in particle size. Preferably, this refers to ground straw as opposed to pressure- refined straw.
  • the furnish preferably has a particle size range of about 4 Tyler mesh to about 80 Tyler mesh. Different fractions of this particle size range are typically used to form different portions of the composite panels of the present invention.
  • the inner portions or layers of the composite panels preferably use furnish having a major portion that has particle size of about 4 Tyler mesh to about 20 Tyler mesh, whereas the outer portions or layers of the composite panels preferably use furnish having a major portion that has a particle size of about 20 Tyler mesh to about 80 Tyler mesh.
  • particle size refers to material that passes the larger mesh screen and is retained on the smaller mesh screen.
  • an "acid-catalyzed resin system” includes a resin (i.e., one or more resins) and an acid catalyst (i.e., one or more acid catalysts) for curing the resin.
  • a resin i.e., one or more resins
  • an acid catalyst i.e., one or more acid catalysts
  • Such systems are used to prepare composite panels that can include a homogeneous distribution of one or more types of resin and one or more types of cereal grain straw.
  • they can be used to form a composite panel that can include one or more types of resin and/or one or more types of cereal grain straw in multiple layers.
  • a composite panel may be formed from one type of resin system present in the core layer and a different type resin system in the outer (i.e., face) layer.
  • thermosetting resins which are capable of further curing or crosslinking upon the addition of an acid.
  • examples include, but are not limited to, "phenolic resins,” such as phenol formaldehyde and phenol-melamine formaldehyde, melamine, melamine formaldehyde, melamine-urea formaldehyde, melamine-urea-phenol formaldehyde, urea formaldehyde, or a combination of these resins.
  • phenolic resins include those available as PMF 9707 (ARC Resins Corp., Longueuil, QC, Canada) and CRC 153 (Capital Resin Corp., Columbus, OH).
  • phenol and formaldehyde are combined and shipped as a colloidal aqueous solution with a solids content between about 30% and about 60% by weight. This is used as provided by the resin manufacturer and then is combined (e.g., by blending) the phenol-formaldehyde resin with an acid catalyst.
  • This same process can be used with urea-formaldehyde resin systems, as well as a number of others, but it is believed that a phenol-formaldehyde resin system is preferred due to its increased performance and water resistance compared to other resin systems, e.g., urea-formaldehyde.
  • Particularly preferred is a phenol-melamine formaldehyde resin.
  • Acids useful in the acid-catalyzed resin system include organic acids and mineral acids. Examples include, but are not limited to, formic acid, fumeric acid, sulfuric acid, as well as aromatic sulfonic acids such as benzenesulfonic acid, phenolsulfonic acid, and toluenesulfonic acid.
  • the acid is formic acid, which can be obtained under the tradename ARC CATALYST 9700 (ARC Resins Corporation).
  • the acidic nature of the acid- catalyzed resin system provides an "etching" action on the cereal grain straw and/or the acid changes the pH and/or buffering capacity of the cereal grain straw, which enhances adhesion between the resin and fibers of the cereal grain straws.
  • the types and amounts of resin and acid employed in the acid-catalyzed resin system typically depend upon the type of cereal grain straw selected and the final composite panel attributes desired.
  • the acid-catalyzed resin system includes a phenol-melamine-formaldehyde copolymer, such as PMF 9707 (ARC Resins Corp.) and a formic acid catalyst, such as CATALYST 9700 (ARC Resins Corp.).
  • the acid- catalyzed resin system includes a slightly acidic phenolic resin, such as CRC- 153 (Capital Resin Corp.), and a toluenesulfonic acid/water catalyst, such as CRC-350 (Capital Resin Corp.).
  • a slightly acidic phenolic resin such as CRC- 153 (Capital Resin Corp.)
  • a toluenesulfonic acid/water catalyst such as CRC-350 (Capital Resin Corp.).
  • the type and amount of resin and acid will effect the cure rate of the resin and bond quality of the panel produced. If too high an amount of acid catalyst is used, it will cause the resin to gel very quickly into a cured state before pressure can be applied to provide intimate contact. Therefore, fiber to fiber bonding is not achieved. If too low an amount of acid catalyst is used, the resin doesn't effectively cure, even under the application of pressure. Typically, a desired rate of cure is within a range of about 10 seconds to about 25 seconds per millimeter of thickness.
  • Resins employed in the acid-catalyzed resin system can be used in composite panels of the invention in an amount of about 3 weight percent (wt-%) solids to about 20 wt-% solids, based on the total amount of solids in the oven dry furnish.
  • Acids employed in the acid-catalyzed resin system can be used in an amount of about 0.5 wt-% to about 15 wt-%, based on the total amount of resin used. These ranges may vary, however, but can be readily determined by one skilled in the art without undue experimentation.
  • a composite panel according to the invention can be homogeneous with respect to types of resins, types of cereal grain straws, and particle size distribution of the furnish.
  • composite panels include layers of materials.
  • the outer (i.e., face) layer(s) of the composite panels preferably include furnish of a smaller particle size than is used in the inner (i.e., core) layer(s). This is advantageous from an aesthetic perspective, however, the panel may be easier to finish and the bending strength may be improved as well.
  • Face layer material preferably has an average particle size of about 30 Tyler mesh to about 40 Tyler mesh
  • the core layer material is typically larger, preferably having an average particle size of about 12 Tyler mesh to about 20 Tyler mesh.
  • At least one (and preferably both) of the face layers of the composite panels include an acid-catalyzed resin as described above (preferably, a phenolic resin), whereas the core includes an isocyanate resin.
  • an acid-catalyzed resin as described above (preferably, a phenolic resin)
  • the core includes an isocyanate resin.
  • isocyanate resins can be used. On preferred one is diphenyl methane diisocyanate (polymeric MDI, which is available from ICI polyurethanes under the RUBINATE trademark and from Bayer under the MONDUR trademark). Many other isocyanates are commercially available from BASF and Dow, for example.
  • the core layer includes an MDI resin and the face layers include an acid-catalyzed resin, such as an acid- catalyzed phenol formaldehyde resin.
  • panel configurations include a weight ratio of face to core to face of about 20:60:20 to about 25:50:25, although any of a wide range of ratios can be used, depending on the desired result.
  • the use of MDI resin in addition to an acid-catalyzed resin typically yields a lower cost of resin for the total composite and provides improvement in strength and surface hardness over that of 100% MDI straw composite boards.
  • Composite panels of the present invention can have a wide range of thicknesses and densities.
  • the thickness of a panel is about 0.25 inch to about 1.5 inches, although panels in a wide variety of thicknesses can be made if desired.
  • panels can be made according to the invention in a wide variety of densities. For example, densities ranging from about 35 pounds per cubic foot (pcf) to about 60 pcf can be achieved, with a preferred range of about 42 pcf to about 52 pcf.
  • the present invention also provides methods for preparing a composite panel as described herein.
  • the methods involve combining cereal grain straw and at least one acid-catalyzed resin system, and applying sufficient pressure and temperature to yield a pressed composite panel.
  • the cereal grain straw typically has an initial moisture content of about 10 wt-% to about 30 wt-%. This is preferably reduced to less than about 10 wt- % and more preferably, to less than about 5 wt-%.
  • the moisture content of the furnish upon combination with the acid-catalyzed resin system is preferably about 2 wt-% to about 10 wt-%, and more preferably about 3 wt-% to about 5 wt-%.
  • an acid catalyst can be used to bond a cereal grain straw with a resin.
  • the first method is by directly mixing the acid catalyst with the resin. A predetermined amount of resin solids are measured based on the oven-dry weight of the cereal grain straw furnish being used. The appropriate amount of acid is measured out for the amount of liquid resin being used. The acid catalyst is slowly added to the resin under agitation. Once thoroughly mixed the resin is catalyzed by the acid and is ready for application to the cereal grain straw furnish.
  • Another method of applying an acid-catalyzed resin to cereal grain straw is by the use of an in-line static mixing device. In this method, the resin is pumped through a metering pump at the specified rate as determined by the amount of oven-dry furnish moving through the system into its separate supply line.
  • a second metering pump is used to pump the acid catalyst based upon the amount of liquid resin being pumped into its separate supply line.
  • the two supply lines merge just prior to an in-line static mixer which is engineered to provide quick thorough mixing of the resin and acid catalyst.
  • the resin is acid catalyzed and ready for application to the cereal grain straw furnish.
  • Yet another method by which an acid-catalyzed resin may be used in the production of cereal grain straw composite panels is by application of the resin and catalyst separately.
  • the phenolic resin is pumped through a metering pump into its own separate supply line based on the oven-dry weight of the furnish going through the blenders. The phenolic is applied to the furnish in the blender.
  • the acid catalyst is pumped through a metering pump to its own supply line based upon the amount of liquid resin being applied.
  • the acid is added separately to the furnish in the blender.
  • the coating of the furnish with the two lionids plus the mechanical rubbing together of the particles during the blending process allows for intimate contact of the two and therefore, the resin becomes acid-catalyzed capable of bonding the cereal grain straw furnish.
  • a layered panel i.e., one in which the core layer includes a different blend of materials than the face layers
  • a mixture is produced of the desired furnish and acid-catalyzed resin system for each distinct layer.
  • one blend can be produced for the core and one for the two face layers. These are laid down into a mat in the desired thickness ranges and subsequently pressed to form a panel.
  • the material is pressed to form a composite panel.
  • a wide range of temperatures e.g., from room temperature to about 500°F, preferably about 250°F to about 380°F, and more preferably, about 300°F to about 380°F
  • pressures e.g., from about 250 pounds per square inch (psi) to about 1000 psi, preferably, about 250 psi to about 750 psi, and more preferably, about 400 psi to about 500 psi.
  • Press time can vary over a wide range as well. Typically, the press time is about 3.5 minutes total to about 10 minutes total, with subsequent hot stacking of about 8 hours to about 15 hours or longer.
  • An example of a preferred press cycle includes the following: (1) start at
  • Loose or string-baled wheat straw was ground in a hammermill. This milled material was then dried in a dryer, such as a flat-belt gas fired dryer, to a desired moisture content of about 2 wt-% to about 4 wt-%. This dried furnish was then classified through a screener with different mesh sizes. Coarse, larger particles that passed a 6 mesh screen and were retained on a 20 mesh screen were used for the core layer. Finer, smaller particles that passed a 20 mesh screen and were retained on a 80 mesh screen were used for the face layers.
  • the core and face furnishes were separately batch blended with the desired resin.
  • the face furnish was blended with ARC PMF 9707 resin.
  • the amount of resin solids added was 7.5% of the amount of dried face furnish.
  • the core furnish was blended with 4.5% MDI resin.
  • the furnish was blended in a laboratory batch blender (6-foot diameter, 3.5 feet deep) equipped with a Coil spinning disk atomizer (Model EL-4, Coil Ind., Vancouver, British Columbia) with an atomizing speed of 7500 rpm, a resin addition rate of 1 gram/second, and a blender speed of 18 rpm.
  • Tri-layer matts were formed in a 21 -inch by 21 -inch box on an aluminum caul plate.
  • a predetermined amount of blended face furnish was spread out by hand in the box and leveled.
  • a predetermined amount of blended core furnish was spread out by hand on top of the face furnish and leveled.
  • a second predetermined amount of face furnish was spread out by hand on top of the core furnish and leveled. Slight pressure was applied to remove some of the air from the matt.
  • the face to core weight ratio used was 25:50:25. The box was carefully removed and the formed matt placed in a single- opening heated platen press.
  • the press temperature was 350°F and the maximum pressure was 500 psi with a total press time of 6.0 minutes, which included at least about a 30-second degas time, for 5/8-inch panels and 4.0 minutes for 1/4-inch panels.
  • the target panel density was 45 pcf for the 5/8-inch panels and 48 pcf for the 1/4-inch panels.

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

Abstract

L'invention concerne un panneau mixte comprenant de la paille céréalière et une résine catalysée par un acide.
PCT/US1999/026219 1998-11-05 1999-11-05 Panneaux mixtes composes de paille cerealiere et d'une resine catalysee par un acide Ceased WO2000025998A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU16096/00A AU1609600A (en) 1998-11-05 1999-11-05 Composite panels made out of cereal grain straw and an acid-catalyzed resin

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US10718298P 1998-11-05 1998-11-05
US60/107,182 1998-11-05
US10948298P 1998-11-23 1998-11-23
US60/109,482 1998-11-23
US11297798P 1998-12-17 1998-12-17
US60/112,977 1998-12-17
US12337599P 1999-03-08 1999-03-08
US60/123,375 1999-03-08

Publications (1)

Publication Number Publication Date
WO2000025998A1 true WO2000025998A1 (fr) 2000-05-11

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AU (1) AU1609600A (fr)
WO (1) WO2000025998A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002081160A1 (fr) * 2001-04-03 2002-10-17 Alberta Research Council Inc. Procedes de traitement de la paille pour l'obtention de fibres
US6576175B1 (en) 2000-04-06 2003-06-10 Archer-Daniels-Midland Company Method of tempering composite board panels without use of a bake oven
US7032356B2 (en) 2003-08-19 2006-04-25 Layfield Derek J Interior wall and partition construction
CN101899883A (zh) * 2010-07-07 2010-12-01 南京林业大学 一种厚型轻质秸秆墙体材料的制造方法
WO2015011640A1 (fr) 2013-07-22 2015-01-29 Birnbaum Richard Procédé et système permettant de fabriquer un panneau multifonction à partir d'un matériau composite
US9249251B2 (en) 2010-08-17 2016-02-02 Hexion Inc. Compositions and methods to produce triazine-arylhydroxy-aldehyde condensates with improved solubility
CN105754299A (zh) * 2016-02-26 2016-07-13 文登蓝岛建筑工程有限公司 一种新型复合板材

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US4514255A (en) * 1983-08-19 1985-04-30 Borden, Inc. Process for the manufacture of dried, resin-treated fiber furnish
EP0307812A2 (fr) * 1987-09-12 1989-03-22 BASF Aktiengesellschaft Panneaux de bois à plusieurs couches et leur fabrication
JPH0447902A (ja) * 1990-06-15 1992-02-18 Koyo Sangyo Kk 積層材の製造方法
US5160679A (en) * 1989-08-29 1992-11-03 Greene Jack T Process for making particle board including the use of acetoacetamide as a formaldehyde scavenger
GB2265150A (en) * 1992-03-12 1993-09-22 Brian Harmer Composition containing sub-divided straw or other agricultural fibres

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US6576175B1 (en) 2000-04-06 2003-06-10 Archer-Daniels-Midland Company Method of tempering composite board panels without use of a bake oven
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CN1298519C (zh) * 2001-04-03 2007-02-07 艾伯塔研究委员会公司 秸秆纤维加工方法
US7032356B2 (en) 2003-08-19 2006-04-25 Layfield Derek J Interior wall and partition construction
CN101899883A (zh) * 2010-07-07 2010-12-01 南京林业大学 一种厚型轻质秸秆墙体材料的制造方法
US9249251B2 (en) 2010-08-17 2016-02-02 Hexion Inc. Compositions and methods to produce triazine-arylhydroxy-aldehyde condensates with improved solubility
WO2015011640A1 (fr) 2013-07-22 2015-01-29 Birnbaum Richard Procédé et système permettant de fabriquer un panneau multifonction à partir d'un matériau composite
CN105754299A (zh) * 2016-02-26 2016-07-13 文登蓝岛建筑工程有限公司 一种新型复合板材

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