CN104136179A - Lignocellulosic materials with lignocellulosic fibers in the outer layers and expanded plastics particles present in the core, and process and use thereof - Google Patents
Lignocellulosic materials with lignocellulosic fibers in the outer layers and expanded plastics particles present in the core, and process and use thereof Download PDFInfo
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- CN104136179A CN104136179A CN201280063976.2A CN201280063976A CN104136179A CN 104136179 A CN104136179 A CN 104136179A CN 201280063976 A CN201280063976 A CN 201280063976A CN 104136179 A CN104136179 A CN 104136179A
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- 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
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- 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
- B27N3/005—Manufacture of substantially flat articles, e.g. boards, from particles or fibres and foam
Abstract
The invention relates to lignocellulosic materials having a core and two outer layers, comprising in the core A)30% to 98% by weight of lignocellulose particles; B) 1% to 25% by weight of expanded plastics particles having a bulk density in the range from 10 to 150 kg/m3, C) 1% to 50% by weight of one or more binders selected from the group consisting of phenoplast resin, aminoplast resin, and organic isocyanate having at least two isocyanate groups, and D) 0% to 30% by weight of additives and in the outer layers E)70% to 99% by weight of lignocellulose fibers, F) 1% to 30% by weight of one or more binders selected from the group consisting of phenoplast resin, aminoplast resin, and organic isocyanate having at least two isocyanate groups, and G) 0% to 30% by weight of additives.
Description
The present invention relates to have core and two outer field ligno-cellulosic materials, wherein this core comprises foamed plastic particle and this skin comprises lignocellulose fiber.
CH-A-370 229 disclose not only there is light weight but also there is compression strength and by wood chip or wood-fibred, adhesive with as the porous of filler, can foam or compression moulding part that part expandable plastic forms.
The shortcoming of these compression moulding parts is that they do not have the skin without plastics, this means that conventional coating technology (for example make lining with furniture paper tinsel or use the short period of melamine film to apply) causes bad result.
DE-U-20 2,007 017 713 discloses the particieboard of weight saving, and it by obtaining wood chip and the combination of equally distributed expanded polystyrene bead in the intermediate layer of this plate.
The shortcoming of these materials is that flexural strength, resistance to screw rod pull out drawing property and surface quality is not abundant to all application.
WO-A-2008/046890 discloses lightweight individual layer and delta wood sill, and it comprises wooden particle, bulk density is 10-100kg/m
3polystyrene and/or styrol copolymer filler and adhesive.This filler is advantageously evenly distributed in this wood-base materials.This wood-base materials is by veneer, wood chip or wood-fibred, and more particularly wood chip and wood-fibred are produced.
The shortcoming of these materials is can only obtain improvement in performance to increase glue amount and/or amount of polymers and therefore to increase cost for given plate density.
Therefore, the object of the invention is to make up above-mentioned shortcoming, lightweight ligno-cellulosic materials more particularly will be provided, it has improved flexural strength, improved screw rod pulls out the value of drawing and/or good surface property, these materials continue to have good processing characteristics, as conventional high density wood-base materials.
Therefore found to have core and two outer field novel and improved ligno-cellulosic materials, it comprises following component or is preferably made up of following component in this core:
A) 30-98 % by weight lignocellulosic particles;
B) 1-25 % by weight bulk density is 10-150kg/m
3foamed plastic particle,
C) one or more adhesives that are selected from bakelite resin, amino resin and there is the organic isocyanate of at least two isocyanate groups of 1-50 % by weight, and
D) 0-30 % by weight additive,
And in this skin, comprise following component or preferably formed by following component:
E) 70-99 % by weight lignocellulose fiber,
F) one or more adhesives that are selected from bakelite resin, amino resin and there is the organic isocyanate of at least two isocyanate groups of 1-30 % by weight, and
G) 0-30 % by weight additive.
The dry weight that the statement of the percetage by weight of component A, B, C, D, E, F and G relates to described component accounts for the ratio of whole dry weight.The summation of the weight percent numerical value of component A, B, C and D is 100 % by weight.The summation of component E, F and G is similarly 100 % by weight.In addition, not only this skin but also this core comprise water, and this does not consider in gravimetric value.This water may be derived from the residual moisture that is present in this lignocellulosic particles, be derived from this adhesive, be for example derived from as dilution adhesive or the wetting outer water additionally adding or be derived from additive as aqueous solution of curing agent or paraffin latexes or in the time that foamed plastic particle for example uses steam foaming, be derived from foamed plastic particle.This core and this outer field water content can be at most 20 % by weight based on 100 % by weight gross dry weights, i.e. 0-20 % by weight, preferably 2-15 % by weight, more preferably 4-10 % by weight.The total solids of this core is generally 100:1-0.25:1 with the ratio of this outer field total solids, preferably 10:1-0.5:1, more preferably 6:1-0.75:1, more particularly 4:1-1:1.
Ligno-cellulosic materials of the present invention (lignocellulosic material) (ligno-cellulosic materials (lignocellulose material)) can be by following production:
Conventionally be separated from each other mixing by the component for core with for outer field component.
For this core, can and/or be included in constituent (component constituent) wherein (for example from two or more compositions of a kind of component, as material or compound) by lignocellulosic particles A and B component, C and D mixes with any desired sequence.Component A, B, C and D in each case can be by a kind of, two kinds (A1, A2 or B1, B2, or C1, C2 or D1, D2) or multiple constituent (A1, A2, A3 ..., or B1, B2, B3 ..., C1, C2, C3 ..., or D1, D2, D3 ...) form.
If each component is made up of multiple constituent, these constituents can be used as mixture and add or be separated from each other and add.In the situation that separately adding, these constituents can directly add or one by one at different time points instead of directly add one by one.For example, in the time that component C is made up of two kinds of composition C1 and C2, this means that C2 is close to add after C1 or C1 adds after being close to C2, or one or more other components or constituents, for example B component adds between C1 and C2 reinforced.Can also be by component and/or constituent and other components or constituent premix before adding.For example, can additive component D1 be added in adhesive C or add in adhesive ingredients C1, then this mixture being added in actual mix.
Preferably first foamed plastic particle B is added in lignocellulosic particles A, then this mixture is mixed with adhesive C or two or more adhesive ingredients C1, C2 etc.In the time using two or more adhesive ingredients, they are preferably separated from each other and add.Additive D preferably mixes, then adds with adhesive C or adhesive ingredients (for example, from the Multiple components of this component, material or compound) part.
For this skin, lignocellulose fiber E and component F and G and/or the constituent that wherein exists (for example, from a kind of Multiple components of component, material or compound) are mixed with any desired sequence.Can use equal mixture or two kinds of different mixtures for these two skins, preferably equal mixture.
In the time that each component is made up of multiple constituent, these compositions can be used as mixture and add or be separated from each other and add.Now these constituents can directly add or one by one at different time points instead of directly add one by one.Additive G preferably part mixes with adhesive F or adhesive ingredients part, then adds.
Gained mixture A, B, C, D and E, F, mono-of G are compressed at elevated temperatures and obtain lignocellulosic mechanograph at a superimposed layer and by conventional method.For this reason, produce pad (mat) on carrier, described pad forms (" sandwich structure (sandwich construction) ") with order E, F, G/A, B, C, D/E, F, G by these mixtures.Conventionally by this pad at 80-300 DEG C, preferably 120-280 DEG C, the more preferably temperature of 150-250 DEG C and 1-50 bar, preferably 3-40 bar, more preferably the pressure lower compression of 5-30 bar and form mechanograph.In a preferred embodiment, before hot pressing, this pad is carried out to cold prepressing contracting.Compression can be undertaken by the known any method of those of skill in the art (referring to " Taschenbuch der Spanplatten Technik ", H.-J.Deppe, K.Ernst, the 4th edition, 2000, DRW – Verlag Weinbrenner, Leinfelden Echterdingen, 232-254 page and " MDF-Mitteldichte Faserplatten " H.-J.Deppe, K.Ernst, 1996, DRW-Verlag Weinbrenner, Leinfelden-Echterdingen, the example in 93-104 page).The for example discontinuous compact technique on one or more levels press of these method utilizations or for example continuous compact technique on biobelt press.
The averag density that ligno-cellulosic materials of the present invention has is conventionally 300-600kg/m
3, preferably 350-590kg/m
3, more preferably 400-570kg/m
3, more particularly 450-550kg/m
3.
The lignocellulosic particles of component A is with 30-98 % by weight, preferably 50-95 % by weight, more preferably the amount of 70-90 % by weight is present in the ligno-cellulosic materials of this core, and its basic material can be any required timber variety or its mixture, example is dragon spruce, beech, pine, larch, linden, poplar, Eucalyptus, ash, chestnut and fir wood or its mixture, preferably dragon spruce, beech or its mixture, more particularly dragon spruce, and for example can comprise for the production of particieboard, the woody part of the plate of MDF (medium density fibre board (MDF)) and HDF (high density fiberboard) is divided as wood lath, batten, wood chip, wood-fibred, wood chip or its mixture, preferably wood chip, wood-fibred, wood chip and composition thereof, more preferably wood chip, wood-fibred or its mixture.Lignocellulosic particles can also be from xylophyta as flax, hemp, Cereal or other annual plants, preferably flax or hemp.Particularly preferably use the wood chip for the production of the type of particieboard.If use the mixture of different lignocellulosic particles, the mixture of the mixture of for example wood chip and wood-fibred or wood chip and wood chip, preferably at least 75 % by weight of the ratio of wood chip, i.e. 75-100 % by weight, more preferably at least 90 % by weight, i.e. 90-100 % by weight.The averag density of component A is generally 0.4-0.85g/cm
3, preferably 0.4-0.75g/cm
3, more particularly 0.4-0.6g/cm
3.
The raw material of lignocellulosic particles is generally from the timber of forestry thinning, forest residue (forest residual), residual industrial wood and the timber by mistake, and contains in addition the plant of wood-fibred.Be processed into required lignocellulosic particles, for example wooden particle, as wood chip or wood-fibred, can carry out (for example M.Dunky according to known method, P.Niemz, Holzwerkstoffe und Leime, 91-156 page, Springer Verlag Heidelberg, 2002).
In this outer field ligno-cellulosic materials, the lignocellulose fiber of component E is with 70-99 % by weight, preferably 75-97 % by weight, more preferably the amount of 80-95 % by weight exists, and it is by least 75 % by weight, i.e. 75-100 % by weight lignocellulose fiber, preferably at least 85 % by weight, be 85-100 % by weight, more preferably at least 95 % by weight, 95-100 % by weight forms.Most preferably only use lignocellulosic, use 100 % by weight lignocellulose fibers.The raw materials used timber that can come listed all timber varieties under comfortable component A or xylophyta.After mechanical crushing, can for example after hydrothermal pretreatment, pass through grinding operation producd fibers.Become method for fiber for example by Dunky, Niemz, Holzwerkstoffe und Leime, Technologie und Einflussfaktoren, Springer, 2002, the 135-148 pages are known.The averag density of component E is generally 0.3-0.85g/cm
3, preferably 0.35-0.8g/cm
3, more particularly 0.4-0.75g/cm
3.
Component A can comprise 0-10 % by weight, preferably 0.5-8 % by weight, the more preferably a small amount of water of routine of 1-5 % by weight (in 0-0.5 % by weight, preferably 0-0.4 % by weight, more preferably in the low fluctuation range of the routine of 0-0.3 % by weight).The numeral of this amount based on the definitely dry wooden material of 100 % by weight and description to be component A be close to afterwards and be selected from the first component of B, C and D or the first constituent or the first mixture and mix previous water content in dry (by the known conventional method of those of skill in the art).
In a preferred embodiment, component E can comprise 0-10 % by weight, preferably 0.5-8 % by weight, and more preferably 1-5 % by weight is (in 0-0.5 % by weight, preferably 0-0.5 % by weight, more preferably in the low fluctuation range of the routine of 0-0.3 % by weight) a small amount of water.The numeral of this amount based on the definitely dry wooden material of 100 % by weight and description to be component E be close to afterwards and be selected from the first component of F and G or the first constituent or the first mixture and mix previous water content in dry (by the known conventional method of those of skill in the art).
In another preferred embodiment, component E can comprise 30-200 % by weight, preferably 40-150 % by weight, the more preferably water of 50-120 % by weight (in 0-20 % by weight, preferably 0-10 % by weight, more preferably in the fluctuation range of 0-5 % by weight).The numeral of this amount based on the definitely dry wooden material of 100 % by weight and description to be component E be close to and be selected from the first component of F and G or the first constituent or the first mixture water content before mixing.In this embodiment, after adding a part for whole components and/or constituent, the method known according to those of skill in the art is dried; Preferably this is dried after adding all components and carries out.
Suitable foamed plastic particle (B component) comprises foamed plastic particle, preferably foamed thermoplastic particle, and its bulk density is 10-150kg/m
3, preferably 30-130kg/m
3, more preferably 35-110kg/m
3, more particularly 40-100kg/m
3(by weigh with discrete material fill defined volume determine).
Foamed plastic particle B is conventionally taking average diameter as 0.01-50mm, preferably 0.25-10mm, and more preferably 0.4-8.5mm, more particularly the ball of 0.4-7mm or bead form are used.In a preferred embodiment, ball for example in spherical or ellipsoidal particle situation per unit volume there is little surface area and advantageously for closed pore ball.Conventionally be no more than 30% according to the perforate ratio of DIN ISO4590, i.e. 0-30%, preferably 1-25%, more preferably 5-15%.
Can foam or foamed plastic particle based on the normally all known polymers that can foam of suitable polymers or its mixture, preferred thermoplastic polymer or its mixture.This type of highly suitable examples of polymer comprises polyketone, polysulfones, polyformaldehyde, PVC (hard and soft), Merlon, poly-isocyanurate, poly-carbodiimide, polyacrylamide imines and Polymethacrylimide, polyamide, polyurethane, amino resin and phenolic resins, styrene homopolymers (below also referred to as " polystyrene " or " styrene polymer "), styrol copolymer, C
2-C
10olefin homo, C
2-C
10olefin copolymer and polyester.In order to produce described olefin polymer, preferably use 1-olefine, example is ethene, propylene, 1-butylene, 1-hexene and 1-octene.
Polymer, preferred thermoplastic polymer can additionally can foam or foamed plastic particle B with the formation as auxiliary agent) basic conventional additives together with or on space, mix dividually, the latter's example is that UV stabilizing agent, antioxidant, coating, hydrophobizers, nucleator, plasticizer, fire retardant, solubility and insoluble organic and/or inorganic dyestuff, pigment and adiathermance particle are as carbon black, graphite or aluminium powder.
B component conventionally can be by obtaining as follows:
Use can be foamed medium (also claim " blowing agent ") or the suitable polymers that comprises the medium that can foam can be by being exposed to microwave energy, heat energy, hot-air, preferably steam, and/or pressure changes and expand (this expansion is conventionally also referred to as " foaming ") (Kuntstoff Handbuch1996, the 4th volume, " Polystyrol ", Hanser1996,640-673 page or US-A-5,112,875).In the process of this program, blowing agent expands conventionally, and particle size increases, and forms foam structure.This expansion can be carried out in the conventional foaming machine that is commonly referred to " prefoam device ".Such prefoam device can forever be installed or can be portable.Expansion can be carried out in one or more steps.In one step process, expandable plastic particle is expanded directly to required final size conventionally.In multistep method, first expandable plastic particle expand into intermediate sizes conventionally, then in one or more other steps, expand into required final size via the intermediate sizes of respective number.Contrary with foamed plastic particle, conventionally do not there is foam structure herein also referred to as the above-mentioned compact plastic grain of " expandable plastic particle ".The foamed plastic particle conventionally gross mass based on plastics and blowing agent has 0-5 % by weight, preferably 0.5-4 % by weight, more preferably the low-residual foaming agents content of 1-3 % by weight.The foamed plastic particle obtaining in this way can temporarily store or can there is no under other intermediate steps, to be further used for production B component of the present invention.
Expandable plastic particle can use the known blowing agent foaming of all those of skill in the art, and blowing agent example is aliphatic C
3-C
10hydro carbons, as propane, normal butane, iso-butane, pentane, isopentane, neopentane, pentamethylene and/or hexane and isomers thereof, alcohols, ketone, ester class, ethers or halogenated hydrocarbons, preferably pentane, isopentane and pentamethylene, the more preferably commercially available pentane isomers mixture of pentane and isopentane.
The amount of blowing agent in expandable plastic particle is generally 0.01-7 % by weight, preferably 0.01-4 % by weight, more preferably 0.1-4 % by weight, in each case the expandable plastic particle based on containing blowing agent.
A preferred embodiment is used styrene homopolymers (herein also referred to as " polystyrene "), styrol copolymer or its mixture as the unique plastics in B component.
This class polystyrene and/or styrol copolymer can be by the known any polymerization technique preparations of those of skill in the art; For example see Ullmann ' s Encyclopedia, the 6th edition, 2000ElectronicRelease or Kunststoff-Handbuch1996, the 4th volume, " Polystyrol ", 567-598 page.
Expandable polystyrene (EPS) and/or styrol copolymer are conventionally prepared by suspension polymerisation in a usual manner or are prepared by extrusion method.
In suspension polymerisation situation, styrene under existing, conventional suspension stabilizer can be formed to polymerization catalyst by free radical optionally adding under other comonomers in aqueous suspension.Blowing agent and any other conventional auxiliary agent can be included in this polymerization first expect in or can be in polymerization process or polymerization add in batch of material after finishing.The pearl expandable styrene polymers that gained is impregnated with blowing agent can be by aqueous phase separation, washing after polymerization finishes, be dried and sieve.
In extrusion method situation, blowing agent for example can be sneaked in polymer via extruder, carry by die plate and under pressure granulation form particle or line material.
Preferred or particularly preferred above-mentioned expandable styrene polymers or expandable styrene copolymer have relatively low foaming agents content.This base polymer is also referred to as " low blowing agent ".Highly be applicable to producing the expandable polystyrene (EPS) of low blowing agent or the method for expandable styrene copolymer and describe US-A-5, in 112,875, it is herein incorporated by reference.
As described, can also use styrol copolymer.Advantageously these styrol copolymers contain at least 50 % by weight based on this plastic quality (reactive blowing agent), i.e. 50-100 % by weight, preferably at least 80 % by weight, the i.e. co polystyrene of 80-100 % by weight.The example of available comonomer comprises AMS, ring halogenated styrenes, acetonitrile, acrylic or methacrylic acid and has ester, N-VCz, maleic acid, maleic anhydride, (methyl) acrylamide and/or the vinyl acetate of the alcohol of 1-8 carbon atom.
Polystyrene and/or styrol copolymer can advantageously comprise the chain branching agent of a small amount of copolymerization, in other words have a more than two key, and the preferably compound of two two keys, as divinylbenzene, butadiene and/or butanediol diacrylate.The common styrene-based of this branching agent uses with the amount of 0.0005-0.5mol%.Also can use the mixture of different styrene (being total to) polymer.Highly suitable styrene homopolymers or styrol copolymer be transparent polystyrene (crystal-clearpolystyrene) (GPPS), high impact polystyrene (HIPS), the polystyrene of anionic polymerisation or high impact polystyrene (A-IPS), styrene-α-methylstyrene copolymer, acrylonitrile-butadiene-styrene (ABS) polymer (ABS), styrene-acrylonitrile (SAN), acrylonitrile-styrene-acrylic ester (ASA), methyl acrylate-butadiene-styrene (MBS), methyl methacrylate-acrylonitrile-butadiene-styrene (ABS) (MABS) polymer or its mixture, or use together with polyphenylene oxide (PPE).
Preferably use plastic grain, more preferably styrene polymer or styrol copolymer, more particularly styrene homopolymers, its molecular weight is 70000-400000g/mol, more preferably 190000-400000g/mol, very preferably 210000-400000g/mol.
These expanded polystyrene particles or foamed styrene copolymer pellet can be with or without under other measures that reduce blowing agent for the production of lignocellulosic material at tool.
Expandable polystyrene (EPS) or expandable styrene copolymer or expanded polystyrene (EPS) or foamed styrene copolymer have antistatic coating conventionally.
Foamed plastic particle B is even non-molten condition conventionally in compression after forming ligno-cellulosic materials, this means plastic grain B impermeable or dipping lignocellulosic particles conventionally, but be distributed between lignocellulosic particles.Plastic grain B can separate with lignocellulosic by physical method conventionally, for example, after pulverizing ligno-cellulosic materials.
The total solids of the total amount of foamed plastic particle B based on this core is generally 1-25 % by weight, preferably 3-20 % by weight, more preferably 5-15 % by weight.
Find advantageously by size and the lignocellulosic particles of above-mentioned foamed plastic particle B preferred wooden particle A) coupling, or vice versa.
This coupling is below by lignocellulosic particles, and the correlation of the corresponding d ' value (from Rosin-Rammler-Sperling-Bennet function) of preferred wooden particle A and foamed plastic particle B represents.
Rosin-Rammler-Sperling-Bennet function is for example described in DIN66145.
D ' value is carried out mesh analysis to determine foamed plastic particle B and lignocellulosic particles by being first similar to DIN66165 the 1st and 2 parts, the size distribution of preferred wooden particle A and measuring.
Then the value from mesh analysis inserted in Rosin-Rammler-Sperling-Bennet function and calculate d '.
Rosin-Rammler-Sperling-Bennet function is:
R＝100*exp(-(d/d’)
n))
Parameter is defined as follows:
R remains in the residue (% by weight) on corresponding screen tray
D granularity
The granularity of d ' under 36.8 % by weight residues
The width of n size distribution
Highly suitable lignocellulosic particles A, preferred wooden particle have according to the d ' value of Rosin-Rammler-Sperling-Bennet (d ' definition and measure as mentioned above) be 0.1-5, preferably 0.3-3, more preferably 0.5-2.75.
Work as lignocellulosic particles, the particle of preferred wooden particle A and foamed plastic particle B obtains highly suitable ligno-cellulosic materials while meeting lower relational expression according to the d ' value of Rosin-Rammler-Sperling-Bennet:
The d ' of d '≤2.5 × particle B of particle A, the d ' of d '≤2.0 × particle B of preferred particulates A, the more preferably d ' of d '≤1.5 of particle A × particle B, the very preferably d ' of the d ' of particle A≤particle B.
The gross mass of the total amount of adhesive C based on this core is 1-50 % by weight, preferably 2-15 % by weight, more preferably 3-10 % by weight.
The total amount of adhesive F is 1-30 % by weight based on outer field total dry mass, preferably 2-20 % by weight, more preferably 3-15 % by weight.
The adhesive of component C and component F can be selected from bakelite resin, amino resin and have the organic isocyanate of at least two isocyanate groups, wherein component C and F use identical or different adhesive or binder combination, preferably different adhesives, particularly preferably uses phenoplasts and aminoplast in both cases.Weight numeral in aldehyde aldehyde plastics or amino resin situation relate to respective components solids content (by 120 DEG C in 2 hours evaporation water and according to G ü nterZeppenfeld, Dirk Grunwald, Klebstoffe in der Holz-und
the 2nd edition, DRW-Verlag, the 268th page of mensuration), and with regard to isocyanates, more particularly PMDI (polymerization methyl diphenylene diisocyanate), it relates to isocyanate component itself, in other words, for example, there is no solvent or emulsification.
Term " phenoplasts " refers to the synthetic resin or the modified product that obtain by phenol and aldehydes condensation.Except unsubstituting phenenyl phenol, by the derivative of phenol for the manufacture of bakelite resin.These comprise cresols, xylenols and other alkyl phenols (for example p-t-butyl phenol, to tert-octyl phenol with to tertiary nonyl phenol), aryl phenol (for example phenylphenol and naphthols) and diphenol (divalent phenol) (as resorcinol and bisphenol-A).Most important aldehyde component is formaldehyde, and it uses with various forms, comprises the aqueous solution and solid polyformaldehyde, and obtains in addition the compound of formaldehyde.Other aldehydes (for example acetaldehyde, methacrylaldehyde, benzaldehyde and furfural) are with more limited degree use, as the situation of ketone.Bakelite resin can be by the chemical reaction of methylol or phenolic hydroxyl group and/or the modification by the physical dispersion (EN ISO 10082) in this modifier.
Preferred bakelite resin is phenol/urea formaldehyde, most preferably phenol-formaldehyde resin.Phenol-formaldehyde resin (also claiming PF resin) is for example, by Kunststoff-Handbuch, and the 2nd edition, Hanser1988, the 10th volume, " Duroplaste ", 12-40 page is known.
Can use the known all amino resins of those of skill in the art as amino resin, preferably to known those of the production of wood-base materials.This resinoid and in addition its preparation example are as being described in Ullmanns
der technischen Chemie, the 4th revision and extended edition, Verlag Chemie, 1973,403-424 page " Aminoplaste " and Ullmann ' sEncyclopedia of Industrial Chemistry, A2 volume, VCH Verlagsgesellschaft, 1985, the 115-141 pages " Amino Resins ", also have M.Dunky, P.Niemz, Holzwerkstoffe und Leime, Springer2002, in 251-259 page (UF resin) and 303-313 page (having MUF and the UF of a small amount of melamine).Typically, they are to have amino or the urea groups (urea groups is also referred to as carboxylacyl amine group) that at least one optionally replaces by organic group part, the preferably compound of urea groups, preferably urea or melamine and aldehyde, the preferably polycondensation product of formaldehyde.Preferred polycondensation product is urea-formaldehyde resins (UF resin), melamine-formaldehyde resin (MF resin) or the urea-formaldehyde resins (muf resin) containing melamine, more preferably urea-formaldehyde resins, and example is from BASF SE
glue product.
Particularly preferred polycondensation product is that wherein aldehyde is 0.3:1-1:1 with the amino optionally replacing by organic group part and/or the mol ratio of urea groups, preferably 0.3:1-0.6:1, more preferably 0.3:1-0.55:1, very preferably those of 0.3:1-0.5:1.In the time that aminoplast and isocyanates are used in combination, aldehyde is 0.3:1-1:1 with the amino optionally replacing by organic group part and/or the mol ratio of urea groups, preferably 0.3:1-0.6:1, more preferably 0.3:1-0.45:1, very preferably 0.3:1-0.4:1.
Described amino resin uses with liquid form conventionally, and normally concentration is the solution of 25-90 % by weight, and preferred concentration is the solution of 50-70 % by weight, preferred aqueous solutions, but also can use with solid form.
The solids content of this liquid aqueous amino resin can be according to G ü nter Zeppenfeld, Dirk Grunwald, Klebstoffe in der Holz-und
the 2nd edition, DRW-Verlag, the 268th page of mensuration.
Itself can use the composition of adhesive C and adhesive F separately, i.e. for example unique composition using amino resin or organic isocyanate or PF resin as adhesive C or adhesive F.But, in addition also can be using the resinous principle of adhesive C and adhesive F as adhesive C and/or being used in combination of two or more compositions of adhesive F; These combinatorial optimizations comprise amino resin and/or bakelite resin.
In a preferred embodiment, can be by the combination of aminoplast and isocyanates as adhesive C.Now in adhesive C, the total dry mass of the total amount of amino resin based on this core is 1-45 % by weight, preferably 4-14 % by weight, more preferably 6-9 % by weight.Organic isocyanate, preferably there is 2-10, the preferably low PIC of average at least one isocyanate groups of 2-8 monomeric unit and every monomeric unit, more preferably the total dry mass of the total amount of PMDI in adhesive C based on this core is 0.05-5 % by weight, preferably 0.1-3.5 % by weight, more preferably 0.5-1.5 % by weight.
Component D and G can comprise similar and different separately independently of each other, the preferably identical known curing agent of those of skill in the art, or its mixture.If adhesive C and/or F comprise amino resin or bakelite resin, conventionally use these components.These curing agent are preferably based on the total amount of amino resin or bakelite resin with for example 0.01-10 % by weight, preferably 0.05-5 % by weight, and more preferably 0.1-3 % by weight adds in adhesive C and/or F.
Curing agent for amino resin component or bakelite resin component is understood to include all acceleration or causes amino resin or the compound of any molecular weight of the polycondensation of bakelite resin herein.The curing agent that one class height is applicable to amino resin or phenol-formaldehyde resin is the ackd salt of organic acid, inorganic acid, organic acid ackd salt and inorganic acid, or forms sour salt, as the ackd salt of ammonium salt or organic amine.Such component can also be used with mixture certainly.Example is ammonium sulfate or ammonium nitrate or organic or inorganic acid, and for example sulfuric acid, formic acid or acid regeneration material, as aluminium chloride, aluminum sulfate or its mixture.The curing agent that one class is preferred for amino resin or bakelite resin is that organic or inorganic is sour as nitric acid, sulfuric acid, formic acid, acetic acid, and has the polymer of acidic group, as the homopolymers of acrylic or methacrylic acid or maleic acid or copolymer.
Bakelite resin, preferably phenol-formaldehyde resin also can solidify in chain olefinic (alkylenically) mode.Preferably use carbonate or hydroxide as potash and NaOH.
For other examples of the curing agent of amino resin by M.Dunky, P.Niemz, Holzwerkstoffe und Leime, Springer2002,265-269 page is known, and for bakelite resin, preferably other examples of the curing agent of phenol-formaldehyde resin are by M.Dunky, P.Niemz, Holzwerkstoffe und Leime, Springer2002,341-352 page is known.
Ligno-cellulosic materials of the present invention can be with 0-10 % by weight, preferably 0.5-5 % by weight, more preferably the known additive of the additive that the amount of 1-3 % by weight comprises other commercial routines and those of skill in the art is as component D and component G, they are identical or different independently of each other, preferably identical additive, example is that hydrophobizers is if paraffin wax emulsions, antifungal agent, formaldehyde scavenger are as urea or polyamines and fire retardant.
The thickness that has foamed plastic particle and have a ligno-cellulosic materials of the present invention of lignocellulose fiber in core in skin changes with application and is generally 0.5-100mm, preferably 10-40mm, more particularly 15-20mm.
In a preferred embodiment of the invention, expandable plastic particle B is present in this core with non-uniform Distribution.This means that the weight ratio X of foamed plastic particle B and lignocellulosic particles A in the perimeter (" outside ") at this core is different from the weight ratio Y of foamed plastic particle B and lignocellulosic particles A in the interior zone (" inside ") at this core, in other words in the perimeter (" outside ") of this core than greater or lesser in the interior zone (" inside ") at this core.The interior zone of this core is separated by being parallel to the face of board plane extension and two perimeters of this core conventionally.The interior zone of this core is interpreted as accounting for the 20-80 % by weight of the total dry mass of this core, preferably 30-70 % by weight, more preferably 40-60 % by weight, more particularly 45-55 % by weight, very preferably 50 % by weight and the region between two perimeters.This two perimeters total dry mass based on this core can have equal in quality, in other words 25 % by weight in every kind of situation, or roughly the same quality, it is 25.01:24.99-25.99:24.01 % by weight, preferably 25.01:24.99-25.8:24.2%, more preferably 25.01:24.99-25.6:24.4%, more particularly 25.01:24.99-25.4:24.6%, or different quality, it is 26:24-40:10 % by weight, preferably 26:24-30:20 % by weight, more preferably 26:24-27:23 % by weight, more particularly 26:24-26.5:23.5 % by weight.The summation of the interior zone of this core and two perimeters is 100 % by weight.In order to measure the weight ratio X of foamed plastic particle B and lignocellulosic particles A in the perimeter of this core, use all foamed plastic particle B and all lignocellulosic particles A that are included in two perimeters.Now be described in plastic grain B and the ratio of lignocellulosic particles A in one of two perimeters ratio X ' can with another of these two perimeters of description in the ratio X of ratio " similar and different.
In material of the present invention, in the perimeter (" outside ") of this core the weight ratio X of foamed plastic particle and lignocellulosic particles and in the interior zone (" inside ") of this core the ratio Z between foamed plastic particle and the weight ratio Y of lignocellulosic particles be 1.05:1-1000:1, preferably 1.1:1-500:1, more preferably 1.2:1-200:1.In a further preferred embodiment, this ratio Z is 0.001:1-0.95:1, preferably 0.002:1-0.9:1, more preferably 0.005:1-0.8:1.
The non-uniform Distribution of plastic grain B in this core can be by following generation:
Can production component A, the multiple mixture of B, C and D, the different quality ratio that they contain component A and B.Can disperse successively these mixtures.Now, conventionally should only slightly mix or not mix the mixture of the different quality ratio with component A and B.Result can obtain the non-uniform Distribution of this foamed plastic particle in the core of this ligno-cellulosic materials.Thus, wooden particle A and plastic grain B all can be divided into different fractions in advance, for example, by screening.Each mixture can comprise the different fractions of wooden particle A and/or plastic grain B.
In another embodiment, the non-uniform Distribution of plastic grain B in this core can disperse to realize by separating.Now use and guarantee that each ball depends on that size and/or the device of weight aggregate in perimeter or the interior zone of this core disperse.This for example can be by using screening system dispersed mixture A, B, C, D to realize.In a preferred embodiment, this system equipment has the sieve of different hole dimensions, and these sieve Mirror Symmetry ground are arranged.The supporter that particularly preferably makes as follows to carry downside cladding material is provided with therein below the dispersal device of screen system and carries: while starting (at producer upwards) at dispersal device, have the sieve with orifice size, wherein the hole dimension of sieve inwardly increases and again reduces in the time that this operating desk finishes towards scatter operation platform (scattering station) central authorities.The setting of sieve means that little lignocellulosic particles enters the perimeter of this core, and these regions are near outer, and large lignocellulosic particles enters the interior zone of this core.Meanwhile, little plastic grain enters the perimeter of this core, and these regions are near outer, and large plastic grain enters the interior zone of this core.Depend on the distribution of sizes of lignocellulosic particles and plastic grain, this produces different lignocellulosic particles A and plastic grain B mass ratio.This class scatter operation platform is described in EP-B-1140447 and DE-C-19716130.
For example, lignocellulosic particles scatter operation platform can comprise two measuring rooms (meteringsilo), and they hold separately scrapes rake (back-scraping rake) for multiple times.The discrete material (" core mixture ") being made up of different bulky grain A and B component, C and D can feed (for example, from feeding) in measuring room above.Being arranged on each measuring room downside can be at bottom band, and it skims over and form together with discharge roll in each case the discharge unit of core mixture on two slewing rollers.Below each discharge roll, can be the continuous scraping band (scraper belt) that guiding and its underpart tower guide on the screen device at different hole dimensions in each case on two slewing rollers, form thus the different sections of screen device.Screen device forms grading plant together with scraping band, and the lignocellulosic particles A of core mixture and plastic grain B can be by this grading plant according to its size classifications.The section of screen device can arrange as follows: thin lignocellulosic particles A and/or plastic grain B are dispersed on downside skin separately in outside remains on those regions of the scatter operation platform in the transmission direction of this net (web), and rugose wood cellulose grain A and/or plastic grain B are scattered in outer upper (details are shown in EP-B-1140447) via the interior zone of this grading plant.
According to another favourable embodiment of the present invention, at least a portion distribution section comprises the abrasive element guiding in abrasion mode on this screen device surface on the surface that leans against this screen device and in the time that distribution section moves in each case.Under moderate pressure, lean against the cleaning effect occurring when further strengthening distribution section and move for the lip-deep abrasive element of this screen device of each distribution section or at least some distribution section on this screen device surface.Meanwhile, abrasive element enhancing is acting on the force component (force component) on particle in the direction surperficial perpendicular to sieve, thereby increases output.This transmitting device is preferably designed to scraping band, more particularly continuous scraping band.Can especially simply and at an easy rate construct in this way this transmitting device.Here advantageously this scraping band at least forms particle in advance on the subregion of the direction perpendicular to this screen device surface, thereby allows particle dumped by this scraping band and reached on this screen device by measuring room via its feed unit.This has exempted the needs of any complicated structure to this feed unit.According to another favourable embodiment of the present invention, this scraping band comprises driver, more particularly tabular driver, and they preferably provide on chain type or the continuous support component of belt with regular interval.Now, this support component can centering be arranged on this driver in each case.But, multiple support components can also be provided, more particularly two chain types or belt support component, they are fixed in the lateral outer side edge regions of this driver separately.This has increased the stability of scraping band designed according to this invention.Preferably be fixed on a support component or multiple support component detachable driver, and/or there is airtight design.This guarantees that driver used can be applicable to screen device used best on the one hand, on the other hand can be by new replacement for old driver.According to another favourable embodiment of the present invention, abrasive element is formed by a certain section of this driver in each case.In this way, the design of apparatus of the present invention is that abnormal cost is effective because for abrasive element without independent assembly.Particularly, at least, in its section of formation abrasive element, driver has flexible design, for example, be made up of hard rubber.This allows abrasive element to meet the surface of this screen device, thereby even exists in some irregular situations and guarantee that abrasive element leans against on this screen device surface under certain pressure on its whole width and also in its whole moving range on sieve surface.According to another preferred embodiment of the present invention, driver has erosion resistant design, at least forms in the section of abrasive element at it, and more particularly has erosion resistant coating, as teflon coating.The assembly that the driver section of formation abrasive element can be designed to one or be designed to separate with driver.In the time abrasive element being designed to the assembly separating, their are detachable being installed on driver preferably, thereby can in the time of wearing and tearing, change them.According to another favourable embodiment of the present invention, driver is at least formed by water repellency non-adhesive material in the section of its formation abrasive element.This has prevented that the particle being soaked by adhesive from keeping adhering on driver, and this adhesion is by the capacity that picks up (pickup capacity) of restriction distribution section.According to another preferred embodiment of the present invention, this screen device comprises having different sieve aperture Shai district, more particularly Liang Geshai district.In this way, the particle of different size has the sieve of the sieve aperture with different size to distinguish level.Thus, especially Jiang Shai district is along arranging one by one on the moving direction of the distribution section that can move on the surface of this screen device, and the sieve aperture that is preferably placed at the moving direction Shang Shai district of distribution section is greater than the sieve aperture being positioned at the rightabout sieve of moving direction district.This has guaranteed in the time that they pass through on sieve surface to have the particle of minor diameter first by this screen device, and in ensuing sieve district, be finally that time large particle passes through this sieve.Therefore, depend on sieve district's number and screen size, realize the required classification of particle.The particle of these classifications can be dumped into for varigrained different gathering-devices according to sieve district, or for example can be dumped into and be arranged on this screen device downside and can be created in thereon in this way on the moving of conveyer belt on its thickness with the net that different grain size distributes.
According to another favourable embodiment of the present invention, this continuous scraping band is via two bending roller guiding and make thus bottom tape section directly on this screen device surface, turn round, and top tape section is apart from this screen device surface specified distance running, be more particularly basically parallel in each case this screen device surface.In this way, compact especially design is possible for apparatus of the present invention.Preferably, now at least in one end of this scraping band, more particularly in the region of bending roller, provide pick device to pick up the particle of discharge.These particles can be the peculiar bodies (alienbody) existing with discrete material, as screw rod or nail; Or they can be exceed maximum admissible dimension and be discharged from and take out so that this screen device of even maximum sieve aperture also can not become aggregation or the particle of obstruction.According to another preferred embodiment of the present invention, at least in the region between the tape section of upper and lower, provide intermediate base, and driver leans against on this intermediate base with its end relative with the section that forms abrasive element, this means in the time that distribution section moves, these ends guide on this intermediate base in abrasion mode.In this embodiment, the discrete material that first imposes on this intermediate base via its feed unit by measuring room can be sent into the ad-hoc location between slewing rollers with limiting mode.Now, according to a preferred embodiment, this intermediate base can be extended to another slewing rollers of offside on the moving direction of top tape section by slewing rollers; At these another slewing rollers with towards between the end of the intermediate base of these another slewing rollers, form the previously region in the direction perpendicular to this screen device surface for particle.Particularly, in the time that this region is formed by another screen device with larger sieve aperture, can exist size to be greater than the peculiar body of size or the preliminary deposition of particle of these sieve apertures here.Only have those particles by this another screen device to fall within on screen device below, on their screen devices below, move by transmitting device.According to another preferred embodiment of the present invention, have two scraping bands in the vertical one be positioned at another after, and scraping band is arranged on Mirror Symmetry ground especially mutually.Now advantageously in the feed unit downstream of measuring room, distributor is set, more particularly be round distributor (shuttledistributor) form, and they can be for supplying with two scraping bands, more particularly alternative supplies by the particle taking out from measuring room by feed unit.Can be started particle to distribute to two different scraping bands by a measuring room by this design.Especially in the time that two scraping bands can drive in the opposite direction and therefore two top tape section can move and provide intermediate base in the mode having illustrated between the tape section of upper and lower in the mode of mutually dispersing, can be by the particle transport that puts on corresponding intermediate base via distributor to the end that is positioned at rightabout scraping band, wherein they put on the screen device being arranged under scraping band in each case.Under the given suitable dimension of the sieve aperture of these screen devices, particularly in the time that the size of sieve aperture increases on the moving direction of bottom tape section, the material of core can form on the moving of conveyer belt that is arranged on screen device, and disperse bottom skin thereon, the formation of core material should make thin lignocellulosic particles A and/or plastic grain B be gathered in the skin of this core, and rugose wood cellulose grain A and/or plastic grain B are gathered in the internal layer of this core.Replace distributor, for example, can also have two measuring rooms, install particle by it additional to two scraping bands.In all embodiments, this screen device and/or other screen devices are preferably designed to shaking screen or vibration reciprocating gird (vibrating shaker screen).Now, the discrete material feeding in this screen device further unclamps, and this means fine grained and leads to more fast sieve aperture also by they (details are shown in DE-C-197 16 130) apart from the medium size particle of this sieve certain distance subsequently.
Another preferred embodiment is to use the roll-type decentralized system (roll screen) with specific profile cylinder.Now also preferably select symmetric construction, this means that little lignocellulosic particles A and/or little plastic grain B enter the perimeter of this core, these regions are near outer, and large lignocellulosic particles A and/or large plastic grain B enter the interior zone of this core.A particularly preferred embodiment is to use one or more ClassiFormerTM devices.That suitable is for example the Classiformer CC from Dieffenbacher, and it has symmetric construction.Or can use relative and two Classiformers C that arrange after one.
Ligno-cellulosic materials, for example wood-base materials is the cheapness of solid wood and protection of resources substitute and particularly in furniture is made, become extremely important for composite floor board with as construction material.What be typically used as raw material is the wooden particle with different-thickness, and example is from the wood chip of various timber or wood-fibred.Such wooden particle is conventionally with natural and/or composite adhesives and the optional wood-base materials that forms plate or strips adding other additive lower compression.
Lightweight wood-base materials because of underlying cause extremely important: lightweight wood-base materials causes the easier treatment product of ultimate consumer, for example, in the time packing, transport, take apart or construct furniture.Lightweight wood-base materials causes lower transport and packing cost, and also can produce lightweight wood-base materials time material saving cost.Lightweight wood-base materials for example may cause the energy consumption that these conveying arrangements are lower when for conveying arrangement.In addition the wood-base materials that, operating weight is light more cost is produced material intensive decorative element, thicker operating surface and the side plate in kitchen for example effectively.
Have many application, as in bathroom or kitchen furniture part or in interior fittings, wherein seek lightweight and economic ligno-cellulosic materials, they have improved mechanical performance, as improved flexural strength and the screw rod value of pulling out.In addition, such material should have fabulous surface quality, to allow to apply the coating with superperformance, and for example paint or varnish coatings.
Embodiment
1. produce foamable polymer particle
From the expandable polystyrene (EPS) Polystyrol of BASF SE
light 200 is as raw material.In prefoam device in batches with steam treatment granules of polystyrene and foam to bulk density be 50g/l.In the foamable polymer particle (B component) obtaining in this way being at room temperature stored in to ventilative cloth bag before further using 7 days.
2. produce wood materials
To three of each composite wood boards raw materials for production kinds of different mixtures.
Mixture 1: component E, F, G, for cover layer
Mixture 2: component A, B, C, D, for the perimeter of this core
Mixture 3: component A, B, C, D, for the interior zone of this core
Comparative example 1 is saved to B component, and now mixture 2 and 3 only comprises component A, C and D.For comparative example 2 and the embodiment of the present invention 3, mixture 2 and 3 is identical.In comparative example 1 and 2, mixture 1 comprises wood wool as component E, and comprises wood-fibred in every other embodiment.
In the each comfortable laboratory blender of mixture, produce, wherein first introduce solid constituent and mix.Liquid component is premix in container, then spraying.
For mixture 1, use thin cover layer, the wood-fibred (component E) that the dragon spruce wood shavings that moisture is 5.9% or moisture are 2.8%.
For mixture 2 and 3, use intermediate layer, the wood shavings (component A) that the wood shavings that are 3.2% by moisture form.
Be 67% by the solids content from BASF SE
glue 347 is as adhesive (component C and F).For mixture 1, the ammonium nitrate solution (in each case based on 100 weight portion Kaurit glue 347) that is 52% by 40 weight parts waters and 1 weight portion concentration adds in this glue, is then applied to the solid constituent of this mixture.For mixture 2 and 3, the ammonium nitrate solution that is 52% by 4 weight portion concentration (based on 100 weight portion Kaurit glue 347) adds in this glue, is then applied to the solid constituent of this mixture.
For cover layer (mixture 1), the amount of setting glue mixture adds to make to obtain 10% glue, i.e. 10 weight portion glue (based on solid)/100 weight portion E (based on solid).
For this core (for outside Qu Yu – mixture 2 – of this core and inner Qu Yu – mixture 3 the two), the amount of setting glue mixture adds to make to obtain 8.0% glue, i.e. the mixture (based on solid) of 8.0 weight portion glue (based on solid)/100 weight portion A and B.
Then mixture is placed in to 30 × 30cm mould with one of stacked system on one, with the wood materials pad with symmetrical structure that obtains being formed by 5 layers (sequentially: mixture 1, mixture 2, mixture 3, mixture 2, mixture 1).Select each amount to make the weight ratio (based on dry) of each layer in each case as 15.5:20.5:28:20.5:15.5.
In all embodiment that comprise B component, be included in B component total amount and the mass ratio identical (based on solid) that is included in the component A total amount in inner 3 layers in inner 3 layers.
Select the gross weight of this wood materials pad to make obtaining desired density under the specific thickness of 18.5mm in the time that this pressing process finishes.
Then wood materials pad cold prepressing is real and suppress in hot press.Set the thickness of 16mm here.Press temperature is that 210 DEG C and press time are 210s in each case.
3. the detection of wood materials
3.1 density
The mensuration of density is carried out after producing according to EN1058 for 24 hours.
3.2 transverse tensile strength
The mensuration of transverse tensile strength is carried out according to EN319.
3.3 flexural strengths and E bend modulus
The mensuration of flexural strength and E bend modulus is carried out according to DIN EN310.
3.4 resistance to screw rods pull out drawing property
Resistance to screw rod pulls out the mensuration of drawing property to carry out according to DIN EN320.The resistance to screw rod of only measuring surface pulls out drawing property.
3.5 peel strengths (Lift-off strength)
Mensuration as the peel strength of the tolerance of surface quality is carried out according to DIN EN311.
Embodiment
Embodiment 1 and 2: the comparative example (have in core and do not have foamable polymer particle) that uses wood shavings in cover layer
Embodiment 3-7: the embodiment of the present invention
Claims (9)
1. there are core and two outer field ligno-cellulosic materials, wherein in described core, comprise:
A) 30-98 % by weight lignocellulosic particles;
B) 1-25 % by weight bulk density is 10-150kg/m
3foamed plastic particle,
C) one or more adhesives that are selected from bakelite resin, amino resin and there is the organic isocyanate of at least two isocyanate groups of 1-50 % by weight, and
D) 0-30 % by weight additive,
And comprise in described skin:
E) 70-99 % by weight lignocellulose fiber,
F) one or more adhesives that are selected from bakelite resin, amino resin and there is the organic isocyanate of at least two isocyanate groups of 1-30 % by weight, and
G) 0-30 % by weight additive.
2. there are core and two outer field ligno-cellulosic materials, in described core, comprise:
A) 30-98 % by weight lignocellulosic particles;
B) 1-25 % by weight bulk density is 10-150kg/m
3foamed plastic particle,
C) one or more adhesives that are selected from bakelite resin, amino resin and there is the organic isocyanate of at least two isocyanate groups of 1-50 % by weight, and
D) 0-30 % by weight additive,
And comprise in described skin:
E) 70-99 % by weight lignocellulose fiber,
F) one or more adhesives that are selected from bakelite resin, amino resin and there is the organic isocyanate of at least two isocyanate groups of 1-30 % by weight, and
G) 0-30 % by weight additive,
Wherein said foamed plastic particle B is present in described core with non-uniform Distribution.
3. have core and two outer field ligno-cellulosic materials, wherein said core is made up of following component:
A) 30-98 % by weight lignocellulosic particles;
B) 1-25 % by weight bulk density is 10-150kg/m
3foamed plastic particle,
C) one or more adhesives that are selected from bakelite resin, amino resin and there is the organic isocyanate of at least two isocyanate groups of 1-50 % by weight, and
D) 0-30 % by weight additive,
And described skin is made up of following component:
E) 70-99 % by weight lignocellulose fiber,
F) one or more adhesives that are selected from bakelite resin, amino resin and there is the organic isocyanate of at least two isocyanate groups of 1-30 % by weight, and
G) 0-30 % by weight additive,
Wherein said foamed plastic particle B is present in described core with non-uniform Distribution.
4. produce according to a method for the ligno-cellulosic materials of any one in claim 1-3, comprise and be mixed for described outer field component E, F and G and component A, B, C and D for described core, the heterogeneous mixture of wherein production component A and B.
5. produce according to the method for the ligno-cellulosic materials of any one in claim 1-3 for one kind, comprise and be mixed for described outer field component E, F and G and component A, B, C and D for described core, wherein disperse in the mode of the heterogeneous mixture that forms component A and B for the material of described core.
6. according to the method for the production ligno-cellulosic materials of claim 4 or 5, the heterogeneous mixture of wherein said component A and B is by disperseing successively the different mixtures with different A/B ratios to obtain.
7. according to the method for the production ligno-cellulosic materials of any one in claim 4-6, the heterogeneous mixture of wherein said component A and B obtains by the mixture that separately disperses to comprise A, B, C and D.
8. the purposes in furniture making, composite floor board and construction material according to the ligno-cellulosic materials of any one in claim 1-4.
9. be used for the purposes of the plate of furniture making, composite floor board and construction material in production according to the ligno-cellulosic materials of any one in claim 1-4.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11195611.6 | 2011-12-23 | ||
| EP11195611 | 2011-12-23 | ||
| PCT/EP2012/076568 WO2013092963A2 (en) | 2011-12-23 | 2012-12-21 | Lignocellulosic materials with lignocellulosic fibers in the outer layers and expanded plastics particles present in the core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104136179A true CN104136179A (en) | 2014-11-05 |
| CN104136179B CN104136179B (en) | 2016-10-12 |
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|---|---|---|---|
| CN201280063976.2A Expired - Fee Related CN104136179B (en) | 2011-12-23 | 2012-12-21 | At outer layer, there is lignocellulose fiber and the ligno-cellulosic materials that there is expanded plastic particles in core and method thereof and purposes |
Country Status (24)
| Country | Link |
|---|---|
| EP (1) | EP2794211B1 (en) |
| JP (1) | JP6223355B2 (en) |
| KR (1) | KR102030206B1 (en) |
| CN (1) | CN104136179B (en) |
| AR (1) | AR089420A1 (en) |
| AU (1) | AU2012356874B2 (en) |
| BR (1) | BR112014015299B1 (en) |
| CA (1) | CA2860245C (en) |
| CL (1) | CL2014001694A1 (en) |
| DK (1) | DK2794211T3 (en) |
| EA (1) | EA027974B1 (en) |
| ES (1) | ES2576481T3 (en) |
| HR (1) | HRP20160779T1 (en) |
| HU (1) | HUE028569T2 (en) |
| LT (1) | LT2794211T (en) |
| MX (1) | MX352162B (en) |
| MY (1) | MY168545A (en) |
| PL (1) | PL2794211T3 (en) |
| PT (1) | PT2794211E (en) |
| RS (1) | RS54924B1 (en) |
| SI (1) | SI2794211T1 (en) |
| UA (1) | UA113421C2 (en) |
| WO (1) | WO2013092963A2 (en) |
| ZA (1) | ZA201405333B (en) |
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| CN111745771A (en) * | 2020-07-04 | 2020-10-09 | 南京林业大学 | Method for preparing non-glue shaving board by waste heat-treated wood |
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| CA2912978C (en) * | 2013-07-22 | 2018-01-02 | Akzenta Paneele + Profile Gmbh | Method for producing a decorated wall or floor panel |
| EP2942208A1 (en) * | 2014-05-09 | 2015-11-11 | Akzenta Paneele + Profile GmbH | Method for producing a decorated wall or floor panel |
| EP3177662A1 (en) * | 2014-08-08 | 2017-06-14 | Basf Se | Continuous process for forming a unitary mat |
| SG11201901903TA (en) * | 2016-09-23 | 2019-04-29 | Basf Se | Method for producing lignocellulose materials |
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| EA027974B1 (en) | 2017-09-29 |
| JP2015506284A (en) | 2015-03-02 |
| CL2014001694A1 (en) | 2014-11-28 |
| MX352162B (en) | 2017-11-13 |
| ES2576481T3 (en) | 2016-07-07 |
| EP2794211B1 (en) | 2016-04-13 |
| HRP20160779T1 (en) | 2016-08-26 |
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| MX2014007513A (en) | 2014-10-17 |
| PT2794211E (en) | 2016-06-20 |
| CA2860245A1 (en) | 2013-06-27 |
| KR20140107606A (en) | 2014-09-04 |
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| EP2794211A2 (en) | 2014-10-29 |
| DK2794211T3 (en) | 2016-08-01 |
| PL2794211T3 (en) | 2016-12-30 |
| LT2794211T (en) | 2016-09-26 |
| BR112014015299B1 (en) | 2021-04-13 |
| KR102030206B1 (en) | 2019-10-08 |
| UA113421C2 (en) | 2017-01-25 |
| CN104136179B (en) | 2016-10-12 |
| WO2013092963A2 (en) | 2013-06-27 |
| JP6223355B2 (en) | 2017-11-01 |
| NZ625930A (en) | 2015-08-28 |
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| AR089420A1 (en) | 2014-08-20 |
| AU2012356874B2 (en) | 2017-01-19 |
| RS54924B1 (en) | 2016-10-31 |
| ZA201405333B (en) | 2017-11-29 |
| EA201491143A1 (en) | 2016-01-29 |
| CA2860245C (en) | 2021-03-02 |
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