CN101479345A - Adhesive system and method of producing a wood based product - Google Patents
Adhesive system and method of producing a wood based product Download PDFInfo
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- CN101479345A CN101479345A CNA2007800235984A CN200780023598A CN101479345A CN 101479345 A CN101479345 A CN 101479345A CN A2007800235984 A CNA2007800235984 A CN A2007800235984A CN 200780023598 A CN200780023598 A CN 200780023598A CN 101479345 A CN101479345 A CN 101479345A
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Abstract
The invention relates to a method of producing a wood based product, comprising applying an adhesive system onto one or more pieces of a wood-based material, and joining the one or more pieces with one or more further pieces of a material, 5 the adhesive system comprises one component comprising starch and another component comprising one or more polymers (P) containing an amine group or an amide group. The present invention also relates to an adhesive system comprising one component comprising starch and another component comprising one or more polymers (P) containing an amine group or an amide group, the two components being present as 10 unmixed separate components. The invention further relates to a wood based product.
Description
The present invention relates to the method for adhesive composition and production wood-based product.
Background technology
In the production of wood-based product, for example phenol-formaldehyde resin, melamine-formaldehyde resin and urea-formaldehyde resins are widely used as tackiness agent based on the resin of formaldehyde.The example of these wood-based products is composite products, comprises a plurality of layer that is bonded together, for example glued board, lamination ground product and be used for for example veneered product of furniture.Other example of these wood-based products is for example shaving board, chipboard and a fiberboard of composite prod, and wherein wood fragments and/or fiber are pressed into plate with tackiness agent.
When the resin that solidifies based on formaldehyde, may and discharge formaldehyde during subsequent use at the production period of wood-based product at these products.For the reason of health, formaldehyde becomes subject matter to the room air burst size for many years.
Still need not contain the wood adhesive of formaldehyde, it has enough bond strengths and whole final product quality, makes to be suitable as the substitute products that contain based on the prior art tackiness agent of the resin of formaldehyde.
Water tolerance and bond strength normally influence the key property of wood-based product's quality.In order to satisfy standard, there is concrete mass parameter usually for specific finished product.For example, that shaving board need satisfy is bonding in for example, the specific criteria aspect thickness swell and the water absorption, and laminated ground product need satisfy the specific criteria aspect for example delamination and fiber tearing usually.
Advised in wood adhesive composition, using the resin of starch-type tackiness agent replacement based on formaldehyde.Imam etc. are at " from the wood adhesive of the pure and mild partial gel starch of crosslinked polyethylene: preparation and performance ", Starch/Starke 51 (1999), Nr.6, S.225-229 page or leaf discloses the binder composition that contains starch and polyvinyl alcohol, and this composition also contains melamine resin.US2,051,025, US 2,102,937, US 3,487,033, US 3,355,307 disclose the tackiness agent based on starch that is used for the production corrugated cardboard.WO03/069061A1 discloses the tackiness agent based on starch that is used for producing board product.
The production method that is not used at present shaving board based on the adhesive composition of starch as yet.
Still need to be applicable to for example adhesive composition based on starch of laminate product or shaving board of production wood-based product.
Therefore, the invention provides the method for a kind of production wood-based product and a kind of adhesive composition is provided.
Summary of the invention
The present invention relates to the method for a kind of production wood-based product, comprise adhesive composition is administered on one or more wood materials, and described one or more material of one or more wood materials and other, preferred wood materials combined, described adhesive composition comprises a kind of amyloid component and the another kind of component that contains one or more polymkeric substance with amine groups or amide group (P), described two kinds of components as independent component applied to wood materials.
Term " adhesive composition " here represent as the combination of the component of tackiness agent and will be when the combination as the combination of the component of tackiness agent.
In term " tackiness agent ", also comprise " caking agent ".
Term " amide group " comprises carbonylamino group.
Term " wood materials " also comprises wooden materials except solid wood, for example fiberboard, chipboard and shaving board material.These want the bonded surface to be made by the wood materials of identical or different type.
Wood materials can be the wood materials of any kind and form, for example chips, fiber, sheet, thin slice, glued board, piece etc.
The invention still further relates to a kind of adhesive composition, it comprises a kind of amyloid component and the another kind of component that contains one or more polymkeric substance with amine groups or amide group (P), and described two kinds of components exist as unmixing independent component.
The invention still further relates to adhesive composition of the present invention and be used for the purposes of production wood-based product.
The invention still further relates to wood-based product, it contains and tackiness agent bonded polylith wood materials, and described tackiness agent contains starch and one or more have the polymkeric substance (P) of amine groups or amide group.
Amyloid component can comprise starch solution or suspension, or comprises the starch as solid material.The component that contains one or more polymkeric substance (P) can comprise solution or suspension, or comprises the polymkeric substance (P) as solid material.Preferred one or more polymkeric substance (P) are comprised in solution or the suspension.
Component in the adhesive composition preferably is applied on the wood materials according to time sequence separately, as first component applied and as second component applied to wood materials.
In one embodiment, if first component of using is solution or dispersion liquid, then described first component was carried out drying before being applied the back and using second component.
In one embodiment, first component that is administered to the adhesive composition on the wood materials contains starch suitably, and second component of using contains one or more polymkeric substance (P) suitably.First component of using contains starch solution or dispersion liquid suitably, and second component of using contains the solution or the dispersion liquid of one or more polymkeric substance (P) suitably.
In one embodiment, amyloid first component of being used is dry after being applied and before using second component that comprises one or more polymkeric substance (P) suitably.
In one embodiment, first component of using contains solid starch suitably, and second component of using contains the solution or the dispersion liquid of one or more polymkeric substance (P) suitably.
In one embodiment, first component that is administered to the adhesive composition on the wood materials contains one or more polymkeric substance (P) suitably, and second component of using contains starch suitably.First component of using contains the solution or the dispersion liquid of one or more polymkeric substance (P) suitably, and second component of using contains starch, and starch is solution or dispersion liquid, or as solid material.
In one embodiment, first component that contains one or more polymkeric substance (P) is dry after being applied and before using amyloid second component suitably.
The solid starch of Shi Yonging powder suitably in the present invention, and can have various water-contents.
Starch: the about suitably 1:2 of the weight ratio of one or more polymkeric substance (P) is to about 100:1, and preferably about 1:1 is to about 50:1, and most preferably from about 2:1 is to about 20:1.
The polymkeric substance (P) of the about suitably 0.1-99 weight of the amount of one or more polymkeric substance (P) in aqueous composition %, preferably about 1-80 weight %, more preferably from about 3-50 weight %, most preferably from about 5-20 weight %.
In one embodiment, the inventive method comprises a kind of method of producing lamination or veneered product, this method comprises suitably adhesive composition of the present invention is administered on the flaky material, for example thin slice, plate, glued board etc., and this flaky material combined with other flaky material.
In one embodiment, the inventive method comprises a kind of method of producing composite prod, and wherein the polylith wood materials is wooden wood chip, and wherein term " wooden wood chip " comprises wooden fragment, wood chip, thin slice, sawdust and any similar segmentation wood materials.Composite prod is chipboard, shaving board or fiberboard suitably, or oriented structure chipboard.This method comprises adhesive composition is administered on the wood chip of wood materials, and in conjunction with these wood chips.This method comprises suitably mixes wooden based chips with adhesive composition, form the mixture of wood chip and adhesive composition, and it is pressed into plate.
One or more polymkeric substance (P): the about suitably 1:500 of the weight ratio of wood chip is to about 1:5, and preferably about 1:100 is to about 1:10, and most preferably from about 1:50 is to about 1:20.
With before one or more polymkeric substance (P) mix, the water-content of wood chip is suitably 0 to about 30 weight %, and preferred 0 to about 10 weight %, and most preferably 0 to about 5 weight %.
The water-content suitably about 3-25 weight % of the mixture of wood chip and adhesive composition when the compacting beginning, preferably about 5-20 weight %, more preferably from about 7-15 weight %, most preferably from about 7-12 weight %.
The example of suitable starches is native starch and treated starch; make by for example potato, corn, wheat, rice, pea etc., for example the starch of the degraded starch of ethanoylization, alkyl succinic acid modification, Sumstar 190, hydroxypropyl starch, cationic starch, amylopectin, height straight chain acetylated starch, tapioca (flour), natural yam starch, native corn starch, natural wheat starch, natural rice starch and natural pea starch.
One or more polymkeric substance (P) contain the monomeric unit of amino-contained or amide group suitably.Suitable is, the monomeric unit of the about 5-100% in one or more polymkeric substance (P) contains amido or amide group, preferably about 25-100%, 50-100% more preferably from about, 90-100% more preferably from about again.Most preferably the whole monomeric units in one or more polymkeric substance (P) contain amido or amide group.
One or more polymkeric substance (P) contain primary amine groups or amide group suitably.One or more polymkeric substance (P) preferably include one or more following polymkeric substance: polyvinylamine, vinyl alcohol/vinylamine copolymer, vinyl alcohol/vinyl formamide multipolymer, PAH, polymine, polyamidoamines amine, and polyvinyl formamide.More preferably, one or more polymkeric substance (P) contain one or more polyvinylamines and vinyl alcohol/vinylamine copolymer.Most preferably polymkeric substance (P) is a polyvinylamine.
In one embodiment, one or more polymkeric substance (P) belong to vinyl polymer suitably.In this case, one or more polymkeric substance (P) preferably include one or more following polymkeric substance: polyvinylamine, vinyl alcohol/vinylamine copolymer, vinyl alcohol/vinyl formamide multipolymer, PAH, and polyvinyl formamide.More preferably one or more vinyl polymers (P) contain primary amine groups.Most preferably vinyl polymer (P) is a polyvinylamine.
In one embodiment, one or more polymkeric substance (P) contain the amide group of primary amino or side extension suitably.One or more polymkeric substance (P) preferably include one or more following polymkeric substance: polyvinylamine, vinyl alcohol/vinylamine copolymer, vinyl alcohol/vinyl formamide multipolymer, PAH, polymine and polyvinyl formamide.Most preferably polymkeric substance (P) is polyvinylamine or polymine.
Polyvinylamine usually by with the polyvinyl formamide hydrolysis to a certain degree preparing." polyvinylamine " represents such polyvinylamine, wherein amido here: the mol ratio of carbonylamino group is 5:95 to 100:0.If amido: the mol ratio of carbonylamino group is less than 5:95, and then polymkeric substance is defined as polyvinyl formamide.Amido in polyvinylamine: the preferably about 10:90 of the mol ratio of carbonylamino group is to about 100:0, and more preferably from about 50:50 is to about 100:0, and most preferably from about 80:20 is to about 100:0.
Vinyl alcohol/vinylamine copolymer obtains having vinyl alcohol and the unitary multipolymer of vinyl-amine prepares by vinyl-acetic ester and vinyl formamide copolymerization and with posthydrolysis usually.In multipolymer, also can there be remaining carbonylamino group and ethyl acetate group.In vinyl alcohol/vinylamine copolymer, amine groups: the mol ratio of carbonylamino group is 5:95 to 100:0.If amido: the mol ratio of carbonylamino group is less than 5:95, and then polymkeric substance is defined as vinyl alcohol/vinyl formamide multipolymer.Hydroxyl in vinyl alcohol/vinylamine copolymer or vinyl alcohol/vinylamide multipolymer: the suitably about 25:75 to 100:0 of the mol ratio of ethyl acetate group, preferably about 75:25 to 100:0.(amido and carbonylamino group) in vinyl alcohol/vinyl methylamine multipolymer or vinyl alcohol/vinyl formamide multipolymer: the about suitably 3:97 of mol ratio of (hydroxyl and ethyl acetate group) is to about 100:0, preferred about 10:90 is to about 100:0, and most preferably from about 25:75 is to about 100:0.
One or more polymkeric substance (P) have about 1000-1 suitably, and 000, the weight-average molecular weight of 000g/mol, preferred about 10,000-800,000g/mol, more preferably from about 20,000-600,000g/mol, most preferably from about 50,000-500,000g/mol.
Adhesive composition also can with other combination of compositions, these compositions are binder composition suitably, and based on the dispersion of the polymkeric substance or the multipolymer of one or more ethylenically unsaturated monomers.The polymkeric substance of one or more suitable ethylenically unsaturated monomers or multipolymer are for example vinyl ester homopolymer, for example polyvinyl acetate; The multipolymer of vinyl ester, for example ethylene (EVA), or the multipolymer of vinyl-acetic ester and acrylic monomer, acrylic monomer for example are methyl methacrylate or butyl acrylate, styrene/butadiene rubbers (SBR), and polyacrylic ester.In this case, based on the about suitably 10-99 weight of the amount % of the tackiness agent of starch, preferably about 25-85 weight %, 50-75 weight % most preferably from about is based on the gross weight meter of wet adhesive system components.
Adhesive composition also can make up with linking agent before using soon.Suitable crosslinking agent be can with those of amino and/or hydroxyl reaction.The example of linking agent is: isocyanic ester, contain the monomer or the polymkeric substance of hexanodioic acid, and melamino-formaldehyde resin, urea-formaldehyde resin, melamine salt, aldehyde is glutaraldehyde for example, oxalic dialdehyde, and polymeric aldehydes, for example dialdehyde starch, and complexing agent, for example zirconates.Linking agent can add in any two component adhesive system.If you are using, the maximum suitably about 30 weight % of the amount of linking agent in the adhesive composition component, or about 0.1-30 weight %.
Adhesive composition further contains one or more polymkeric substance that contains acetoacetoxy groups (P1) suitably.The about suitably 0.05-15 mole of acetoacetoxy groups content % in one or more polymkeric substance (P), preferably about 1-10 mole %.One or more polymkeric substance (P1) preferably contain acetoacetoxy groups polyvinyl alcohol (AAPVA).
The about suitably 1000-5 of the weight-average molecular weight of one or more polymkeric substance (P1), 000,000g/mol, preferred about 10,000-2,000,000g/mol.
One or more components that contain in the adhesive composition of starch, polymkeric substance (P) and polymkeric substance (P1) can further contain additive respectively, for example viscosity modifier and filler, kaolin for example, wheat-flour, bean powder, walnut parting, or known other is applicable to those of bonding wood materials agent formulation.
The component that contains one or more polymkeric substance (P) or adhesive composition (P1) can also contain inorganic salt or organic salt.One or more polymkeric substance of a part (P) can be the band ionic charges, preferably are with positively charged ion.The negative ion amount of the salt in the component that contains one or more polymkeric substance (P) can be 0 to about 30 weight %, or about 0.1-20 weight %, or about 0.5-10 weight %.
In an embodiment of the inventive method, first component of using contains starch, second component of using contains the solution or the dispersion liquid of one or more polymkeric substance (P), and the 3rd component of using contains the solution or the dispersion liquid of one or more polymkeric substance (P1).First component of using is solid starch material suitably.
In an embodiment of the inventive method, first component of using contains the solution or the dispersion liquid of one or more polymkeric substance (P), second component of using contains the solution or the dispersion liquid of one or more polymkeric substance (P1), the 3rd component of using contains starch, and starch is solution or dispersion liquid or solid material.
Compacting is carried out suitably at elevated temperatures.Press temperature depends on the wood-based product that will produce, but about suitably 50-250 ℃, preferably about 100-225 ℃, most preferably from about 150-200 ℃.
Press time is relevant with press temperature, makes lower press temperature require the longer press time usually.The wood-based product that produces has also determined suitable press temperature and press time really.Press time is suitably at least about 10 seconds, and also about suitably 10 seconds to about 60 minutes, preferably at least about 30 seconds, also preferably about 30 seconds to about 30 minutes, most preferably at least about 1 minute, also preferably about 1-15 minute.
The invention still further relates to a kind of wood-based product that obtains by the method for production of the present invention wood-based product.
Wood-based product of the present invention is laminating material or glueing material suitably, for example laminate flooring, gummed floor, gummed furniture material, glued board, wallboard, roofing board, laminated beam; Or composite prod, for example shaving board, fiberboard, chipboard or oriented structure chipboard.Preferably glued board, the gummed furniture material, the gummed floor, laminate flooring or shaving board.
In one embodiment, one or more layers is contained in wood-based product of the present invention, and they combine with one or more tackiness agents, and described tackiness agent contains starch and one or more have the polymkeric substance (P) of amine groups or amide group.
In one embodiment, wood-based product of the present invention comprises composite prod, and it contains and the wooden wood chip of tackiness agent bonded, and described tackiness agent contains starch and one or more have the polymkeric substance (P) of amine groups or amide group.Described composite prod contains the 70-98 weight % that has an appointment, the preferred wood materials of about 80-90 weight % suitably, about 2-25 weight %, the preferred starch of about 5-15 weight %, and about 0.5-10 weight %, preferred one or more polymkeric substance (P) of about 2-6 weight %, described amount is that the dry weight according to composite prod calculates.
Composite prod is chipboard, shaving board or fiberboard preferably, or oriented structure chipboard.
Further specify the present invention below by non-limiting example.Umber and per-cent are respectively weight part and weight percent, except as otherwise noted.
Embodiment
Embodiment 1:
Following production shaving board: with the water-content of 864g is the wood chip of 2 weight % and the 11 weight % polyethyleneimine: amine aqueous solution (Polymin of 205g
SK is from BASF) mix, sneak into the W-Gum (C*Gum NC 03432, from Cerestar, 10% water-content) of 85.3g subsequently.Chips mixtures is pressed into the thick plate of 16mm.Being compressed on 189 ℃ carried out 3 minutes.The order of pressure is to be 160kg/cm in 30 seconds
2, in 2.5 minutes, be 40kg/cm
2, and do not have pressure in the end 30 seconds.
By the piece material with 5 x 5cm adhere on two metal blocies and with they tear detect tensile strength (interior bonding, IB).Also detect thickness swell (TSW) and water and absorb (ABS).Thickness swell is to measure by the degree of swelling that detects after the piece material of 5 x 5cm immerses water (20 ℃, 24 hours).It is by detecting the weight increase after the piece material of 5 x 5cm immerses water (20 ℃, 24 hours) and measuring that water absorbs.
The IB value is 190kPa, and TSW is 35%, and ABS (24 hours) is 136%.
Embodiment 2:
With the following production shaving board of littler scale: with the water-content of 50.7g is the polyvinyl amine aqueous solution (Lupamin of about 4 weight % (11 weight % comprise salt) of the wood chip of 2 weight % and 10.9g
9095, from BASF) mix, sneak into the W-Gum (C*Gum NC03432, from Cerestar, 10% water-content) of 5g and 10g subsequently respectively.Chips mixtures is pressed into the thick plate of 10mm.Be compressed on 180-185 ℃ and 9kg/cm
2Carried out 5 minutes.Adhere on two metal blocies and they are torn by piece material and detect interior bond strength (IB) 5 x 5cm.
As a comparison, produce two kinds of plates in an identical manner, but be to use 10.9g water to replace the polyvinyl amine aqueous solution.
Table 4
| Wood chip (g) | Starch (g) | Polyvinylamine (4 weight %) (g) | The water-content of plate (%) | IB (kPa) |
| 50.7 | 5 | 10.9 | 16.8 | 657 |
| 50.7 | 10 | 10.9 | 16.8 | 613 |
| 50.7 | 5 | - | 16.8 | 129 |
| 50.7 | 10 | - | 16.8 | 127 |
Claims (19)
1. method of producing wood-based product, comprise adhesive composition is administered on one or more wood materials, and described one or more material of one or more wood materials and other combined, described adhesive composition comprises a kind of amyloid component and the another kind of component that contains one or more polymkeric substance with amine groups or amide group (P), described two kinds of components as independent component applied to wood materials.
2. adhesive composition, it comprises a kind of amyloid component and the another kind of component that contains one or more polymkeric substance with amine groups or amide group (P), and described two kinds of components exist as unmixing independent component.
3. according to the process of claim 1 wherein described two kinds of components are used according to time sequence separately, as first component and second component applied to wood materials.
4. according to the method for claim 3, first component of wherein using contains one or more polymkeric substance (P), and second component of using contains starch.
5. according to the method for claim 4, first component of wherein using that contains one or more polymkeric substance (P) is carried out drying after being applied and before using amyloid second component.
6. according to each method or the adhesive composition of claim 2, wherein starch among claim 1 or the 3-5: the weight ratio of one or more polymkeric substance (P) is that about 1:2 is to about 100:1.
7. according to each method or the adhesive composition of claim 2 or 6, wherein starch among claim 1 or the 3-6: the weight ratio of one or more polymkeric substance (P) is that about 2:1 is to about 20:1.
8. according to each method among claim 1 or the 3-7, comprising wooden wood chip is mixed with adhesive composition, and in conjunction with wood chip.
9. according to each method among claim 1 or the 3-8, wherein wood-based product is chipboard, shaving board, fiberboard or oriented structure chipboard.
10. according to each method among claim 1 or the 3-7, comprising adhesive composition is administered on the flaky material, and this flaky material is combined with other flaky material.
11. method according to Claim 8, wherein one or more polymkeric substance (P): the weight ratio of wood chip is that about 1:100 is to about 10:1.
12. according among claim 1 or the 3-11 each method or claim 2,6 or 7 in each adhesive composition, wherein one or more polymkeric substance (P) contain primary amine groups or amide group.
13. according among claim 1 or the 3-12 each method or claim 2,6,7 or 12 in each adhesive composition, wherein one or more polymkeric substance (P) are selected from: polyvinylamine, vinyl alcohol/vinylamine copolymer, vinyl alcohol/vinyl formamide multipolymer, PAH, polymine, and polyvinyl formamide.
14. according among claim 1 or the 3-13 each method or claim 2,6,7,12 or 13 in each adhesive composition, wherein adhesive composition contains one or more polymkeric substance that contains acetoacetoxy groups (P1).
15. wood-based product by each method acquisition among claim 1 or the 3-14.
16. claim 2,6,7 or 12-14 in each adhesive composition be used for the purposes of production wood-based product.
17. wood-based product, it contains and tackiness agent bonded polylith wood materials, and described tackiness agent contains starch and one or more have the polymkeric substance (P) of amine groups or amide group, and described wood-based product is laminating material or glueing material.
18. wood-based product, it contains and tackiness agent bonded polylith wood materials, described tackiness agent contains starch and one or more have the polymkeric substance (P) of amine groups or amide group, described wood-based product is a composite prod, and described composite prod is shaving board, fiberboard, chipboard or oriented wood chipboard.
19. according to the wood-based product of claim 18, it contains the wood materials of the 80-90 weight % that has an appointment, the starch of about 5-15 weight %, and one or more polymkeric substance (P) of about 2-6 weight %, and described amount is to calculate according to the dry weight of composite prod.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/473,963 US8147979B2 (en) | 2005-07-01 | 2006-06-23 | Adhesive system and method |
| US11/473,963 | 2006-06-23 | ||
| EP06116375.4 | 2006-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101479345A true CN101479345A (en) | 2009-07-08 |
Family
ID=40839544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800235984A Pending CN101479345A (en) | 2006-06-23 | 2007-06-07 | Adhesive system and method of producing a wood based product |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101479345A (en) |
| BR (1) | BRPI0713332A2 (en) |
-
2007
- 2007-06-07 BR BRPI0713332-4A patent/BRPI0713332A2/en not_active IP Right Cessation
- 2007-06-07 CN CNA2007800235984A patent/CN101479345A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0713332A2 (en) | 2012-03-13 |
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Application publication date: 20090708 |