CN106393294A - Prestressed carbonized wood board with creep deformation resistant performance and preparation method thereof - Google Patents
Prestressed carbonized wood board with creep deformation resistant performance and preparation method thereof Download PDFInfo
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- CN106393294A CN106393294A CN201610424557.7A CN201610424557A CN106393294A CN 106393294 A CN106393294 A CN 106393294A CN 201610424557 A CN201610424557 A CN 201610424557A CN 106393294 A CN106393294 A CN 106393294A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/546—Flexural strength; Flexion stiffness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/718—Weight, e.g. weight per square meter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
- B32B2307/734—Dimensional stability
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2479/00—Furniture
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention provides a prestressed carbonized wood board with creep deformation resistant performance and a preparation method thereof. The shape of the board and the preparation method are optimized, and the internal stress of the board is increased by utilizing a prestressed principle, so that the board is difficult to creep, the shape stability of the board is increased, the size of the carbonized wood board is small, the intensity is increased, and the prestressed carbonized wood board is widely applied to the field of home decoration, construction, furniture making and the like.
Description
Technical field
The present invention relates to field of material technology is and in particular to a kind of prestressing force carbonization plank with creep resistant deforming performance
Material and preparation method thereof.
Background technology
Furniture decoration solid wood board on current market, using the multi-layer solid wood material such as veneer, natural veneer, central layer
Overlap according to a certain order, make through gluing, pressing, there is with low cost, good appearance, high mechanical strength.Wood
Material, via high-temperature process, becomes the carbide wood between timber and charcoal.Especially surface carbonation wood, can highlight surface recessed
Convex wood grain, produces stereoeffect.Application aspect concentrates on handicraft, finishing material and Shui nationality can product.Also referred to as technique charcoal
Change wood, charcoal burns wood.The existing surface that carbide wood is attached to sheet, to improve the sight of sheet material.In actual use,
The structure of conventional laminated wood, combines by gluing oxidant layer with for timber laminate, and under action of long-term load, creep-resistant property is poor draws
Send out the deformation of carbonization timber layer, come off, therefore generally large in the section of glue laminated wood member, laminated wood seems big and heavy and bulkiness, and material
Material wastes serious.Meanwhile, the determination of laminated wood sectional dimension is often controlled according to its rigidity, and meeting design in rigidity will
Under conditions of asking, all far super design load of intensity of component, this also result in the serious waste of material, and component lightness obtains not
To fully demonstrating, it is unfavorable for promoting the use of of timber structure, for solving this problem, existing method is by joining in laminated wood
Put the non-natural material such as high-strength FRP or reinforcing bar to strengthen, but the method has the following disadvantages：Bond high-strength FRP or steel
The non-natural material such as muscle, needs special adhesive to be bondd, this undoubtedly makes complicated construction technique, leads to cost to increase；
The reinforcing material such as high-strength FRP or reinforcing bar and the poor compatibility of timber, product is easily shelled with timber body during service
From the poor reliability of product quality.
Content of the invention
In view of this, the strong carbonization wood plank of a kind of creep resistant of the present invention, dimensional stability.
The purpose of the present invention is achieved through the following technical solutions：A kind of prestressing force carbide wood with creep resistant deforming performance
Sheet material, including central layer, also includes being arranged on the first buffer layer of central layer one or both sides and covers on first buffer layer surface
At least one of which carbonization timber layer, the one side of the joint of described central layer and first buffer layer is provided with the reinforcement blind hole of circle.
Central layer of the present invention can be selected for any one prior art and realizes, and it should have larger density, higher
Intensity, to support described adsorption layer, the such as core-board of prior art, Europe deals etc..Due to the setting of central layer, containing absorption
The solid wood board mechanical performance of layer gets a promotion and is hardly damaged, and the thickness of adsorption layer also can reduce further, improves made
The outward appearance of the sheet material obtaining.Described first buffer layer can be realized from the relatively low sheet material of density, such as veneer, wood skin etc., Ke Yiyou
Multilayer material is formed by stacking.The effect of first buffer layer is the stress between balance carbonization timber layer and central layer, it is to avoid the two genetic horizon
Between separate.The present invention especially arranges reinforcement blind hole in the one side of central layer and the joint of first buffer layer, and circular reinforcement blind hole has
There is stronger structural stability, reinforcement blind hole receives axial pressure and expands when pressing sheet material, after pressing terminates, reinforcement is blind
Hole will produce the tractive force pointing to its axle center to recover shape, it is to avoid central layer suffers from the extraneous pulling force applying to produce compacted
Become it is ensured that the dimensional stability of central layer, structural stability, it is to avoid carbonization timber layer is affected by central layer and comes off, ftractures.
Further, described first buffer layer and the ratio of the thickness of carbonization timber layer are（0.2-2）:5；Described carbonization timber layer by
Multilayer carbide wood wood skin is formed by stacking；Described carbide wood wood skin is planer wood skin or longitudinally oblique planing wood skin or laterally oblique planing wood skin；
The air-dry density of described first buffer layer is 0.35g/cm3—0.65 g/cm3.
In the present invention, carbonization timber layer can be made up of it is also possible to be formed by carbide wood wood skin monolithic carbonization plank.Described
Carbide wood wood skin refers to scientific and technological wood skin or natural veneer as raw material, to obtain after existing carbonization woodworking carbonization.Using
The carbonization timber layer that multilayer carbide wood wood skin builds up has more preferable ductility it is not easy to take off because of the stress of sheet material internal contraction
Fall, separate.The preferred air-dry density of first buffer layer is 0.35g/cm3—0.65 g/cm3Wood materials make.
Further, described carbonization timber layer include successively from outside to inside one layer of flat cutting wood skin, one layer laterally tiltedly planing wood skin and
The oblique planing wood skin of one layer of longitudinal direction；Between flat cutting wood skin, laterally oblique planing wood skin, the angle of wood-fibred is 20-25 °；Laterally oblique planing wood skin, vertical
It it is 10-15 ° to the wood-fibred angle between oblique planing wood skin.
The present invention is directed to the larger feature of sheet material internal contraction stress of the present invention and further the structure of carbonization timber layer is carried out
Optimize, further enhance carbonization timber layer toughness in all directions, be allowed to be not easy to be stretched and rupture；On the other hand,
Staggered fiber is also beneficial to maintain the structural stability of carbonization timber layer it is not easy to bubbling, come off.
Further, it is provided with the elastic gum bolt with the cooperation of reinforcement blind hole in described reinforcement blind hole；Described carbonization timber layer with
Between first buffer layer, between first buffer layer and central layer, it is equipped with elastic glue-line.
Described elastic gum bolt and elastic glue-line can be selected for having resilient colloidal materials to be made, such as latex, rubber and high score
Sub- fluoropolymer resin etc..When carrying out pre-stressed machining, elastic gum bolt and elastic glue-line extend in the presence of outer boundary stress, become
Shape, after extraneous stress disappear, elastic gum bolt and elastic glue-line will produce the tractive force shrinking when resetting, and make sheet material overall structure more
Step up to gather, structural stability is higher and does not allow yielding.
Further, the both sides of described central layer are equipped with described first buffer layer；The thickness and the of described elasticity glue-line
The ratio of the thickness of one cushion is 1:30-1:50；0.9-1.1 times of a diameter of core thickness of described reinforcement blind hole；Described benefit
The gross area of strong blind hole accounts for the 10%-15% of central layer.
Reinforcement blind hole diameter is excessive, quantity is excessive, is easily reduced the intensity of central layer, leads to sheet material to be easily broken off, force-bearing property
Can decline.And reinforcement blind hole quantity is very few, it is difficult to the shape providing enough internal stress to maintain sheet material again.Through checking, above-mentioned
The reinforcement blind hole of parameter has the effect of optimum.
Preferably, it is additionally provided with second buffer layer between described carbonization timber layer and first buffer layer；In described second buffer layer
It is provided with the hexagonal hole of array arrangement, the diameter of hexagonal hole and the consistency of thickness of second buffer layer；Second buffer layer gas is done close
Spend for 0.35g/cm3—0.65 g/cm3；The thickness of second buffer layer is 1 with the ratio of first buffer layer thickness:2—1:5；Described
The diameter of hexagonal hole is 1.2 times of second buffer layer.
Hexagonal hole, when receiving autofrettage, equally can produce axial deformation, after making sheet material, will close on
Carbonization timber layer and first buffer layer provide the tractive force shrinking, and improve the creep-resistant property of this double-layer structure.
Preferably, described elastic gum bolt and elastic its raw material of glue-line include melamine formaldehyde resin adhesives by weight
10-20 part, PET 50-70 part, PA66 10-15 part, carbamate 0.1-0.5 part, methyl benzoate 0.5-7 part, chlorous acid
Sodium 0.1-0.8 part, copper sulphate 0.01-0.15 part.
Described melamine formaldehyde resin adhesives（melamine-formaldehyde resin）, melamine and first
Polymer obtained by aldehyde reaction.Also known as melamino-formaldehyde resin, melamine resin, can be selected for prior art and realize.PET is poly- to benzene
Naphthalate, is exchanged with glycol ester or first closed with ethylene glycol esterification with terephthalic acid (TPA) by dimethyl terephthalate (DMT)
Become bishydroxyethyl terephthalate, then carry out polycondensation reaction again and be obtained.PA66 is nylon66 fiber, can be selected for prior art and realizes.
Carbamate is the compound that amino or amido are directly connected with the carbonyl of formic acid esters.Also the monoesters list acyl of carbonic acid can be regarded as
Amine.Methyl benzoate, also known as benzoic acid methyl esters, chemically can be considered benzoic acid or benzoyl oxide or chlorobenzoyl chloride methyl alcohol alcohol
The product of solution.Colourless transparent liquid.Can be miscible with methyl alcohol, ethanol, ether；Water insoluble.Sodium chlorite（Sodium
chlorite）, it is commercially available prod.With the addition of the elastic gum bolt of the present invention of carbamate and methyl benzoate and elastic glue-line
After sizing, itself there is outstanding creep-resistant property, contribute to maintaining the shape of sheet material.And in sodium chlorite and copper sulphate
Under synergistic, elastic gum bolt and elastic glue-line then can be with the wood-fibreds of central layer, first buffer layer, second buffer layer and carbonization timber layer
Strong bonded is it is not easy to warpage, bubbling, interlaminar separation.
The present invention can be selected for common pressing method and makes.
Particularly, the present invention also provides a kind of side of the prestressing force carbonization wood plank prepared and have creep resistant deforming performance
Method, including following operation：
S1. central layer, first buffer layer, second buffer layer and carbonization timber layer are prepared；
S2. the surface in central layer gets out reinforcement blind hole；
S3. prepare PUR, poured in described reinforcement blind hole, until PUR surface projects 1-3mm than core plate surface, cold
But obtain elastic gum bolt afterwards；
S4. in core plate surface coating hot-melt adhesive, carry out after covering first buffer layer pressing for the first time；
S5. in first buffer layer surface coating hot-melt adhesive, after covering second buffer layer, carry out second pressing；In second buffer layer
Surface coating hot-melt adhesive, carries out third time and presses after covering carbonization timber layer；
S6. there is described in obtaining after carrying out the 4th pressing the prestressing force carbonization wood plank of creep resistant deforming performance.
Central layer, first buffer layer, second buffer layer and carbonization timber layer all can be selected for any one prior art and make.Hot melt
Glue surface than core plate surface project, in follow-up pressing working procedure protruding parts will suffer from heating power and pressure and be squeezed into reinforcement blind
Kong Zhong, improves the internal stress of reinforcement blind hole.
Further, described first time pressing refers to adopt plane mould with the condition of 15-20MP pressure, 150-200 DEG C
Pressing 150-170min；Described second pressing refers to adopt plane mould with the condition pressing of 8-9MP pressure, 150-200 DEG C
50-70min；Described third time pressing refers to adopt plane mould with the condition pressing 50- of 10-15MP pressure, 150-200 DEG C
70min；Described 4th hot pressing refers to adopt plane mould successively with the condition pressing 50- of 20-35MP pressure, 130-150 DEG C
70min, with the condition pressing 30-40min of 20-35MP pressure, 80-90 DEG C, with the condition pressure of 35-45MP pressure, 20-30 DEG C
Close 100-200min.
The present invention is optimized to the technique of multiple pressing, improves the creep resisting performance of the present invention further.
The a kind of of present invention offer has prestressing force carbonization wood plank of creep resistant deforming performance and preparation method thereof, passes through
The shape and preparation method of sheet material is optimized, strengthens sheet material internal stress using prestressed principle, be allowed to be less likely to occur
Creep, improves the shape stability of sheet material, and the size making carbonization wood plank is more frivolous and intensity improves, and is widely used in house
Dress, the field such as building, Furniture manufacture.
Brief description
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the exploded view of the present invention.
Fig. 3 is the structural representation of another embodiment of the present invention.
Fig. 4 is the structural representation of second buffer layer of the present invention.
Fig. 5 is the structural representation of another embodiment of the present invention.
Fig. 6 is the structural representation of another embodiment of the present invention.
Specific embodiment
For the ease of it will be appreciated by those skilled in the art that make detailed further to the present invention below in conjunction with accompanying drawing and embodiment
Thin description：
Embodiment 1
The present embodiment provides a kind of prestressing force carbonization wood plank with creep resistant deforming performance, such as Fig. 1 and Fig. 2, including central layer
1, also include being arranged on the first buffer layer 3 of central layer 1 side and cover one layer of carbonization timber layer 2 on first buffer layer surface,
Described central layer 1 is provided with circular reinforcement blind hole 11 with the one side of the joint of first buffer layer 3.In the present embodiment, central layer is preferably Europe
Deals.First buffer layer selects veneer to realize.
Further, the ratio of described first buffer layer and the thickness of carbonization timber layer, 1:5；The gas of described first buffer layer is done
Density is 0.35g/cm3—0.65 g/cm3.
Further, described carbonization timber layer is existing carbonization plank.
Further, 2 times of a diameter of core thickness of described reinforcement blind hole；The gross area of described reinforcement blind hole accounts for core
The 30% of plate.
The present invention is made using prior art.
Embodiment 2
The present embodiment provides a kind of prestressing force carbonization wood plank with creep resistant deforming performance, such as Fig. 3, including core, 1, and also wrap
Include the first buffer layer 3 being arranged on central layer 1 both sides and covering one layer of carbonization timber layer 2 on first buffer layer surface, described core
Plate is provided with circular reinforcement blind hole 11 with the one side of the joint of first buffer layer.Described central layer is core-board.
Further, described first buffer layer and the ratio of the thickness of carbonization timber layer are 2:5；Described carbonization timber layer is by multilayer carbon
Change wooden wood skin to be formed by stacking；Described first buffer layer is the veneer that one layer of Eucalyptus is made.
Further, described carbonization timber layer include successively from outside to inside one layer of flat cutting wood skin, one layer laterally tiltedly planing wood skin and
The oblique planing wood skin of one layer of longitudinal direction；Between flat cutting wood skin, laterally oblique planing wood skin, the angle of wood-fibred is 20 °；Laterally tiltedly planing wood skin, longitudinal direction are oblique
Wood-fibred angle between planing wood skin is 15 °.
Further, it is provided with the elastic gum bolt 4 with the cooperation of reinforcement blind hole in described reinforcement blind hole；Described carbonization timber layer 2
It is equipped with elastic glue-line 5 between 3, first buffer layer and central layer 1 and between first buffer layer.In the present embodiment, elastic gum bolt and elasticity
Glue-line is made from PA66 material.
Further, the both sides of described central layer are equipped with described first buffer layer；The thickness and the of described elasticity glue-line
The ratio of the thickness of one cushion is 1:50；0.9 times of a diameter of core thickness of described reinforcement blind hole；Described reinforcement blind hole total
Area accounts for the 15% of central layer.
Preferably, it is additionally provided with second buffer layer 6 between described carbonization timber layer and first buffer layer；As Fig. 4, described second delays
Rush the hexagonal hole 61 that layer 6 is provided with array arrangement, the diameter of hexagonal hole 61 and the consistency of thickness of second buffer layer；Second delays
Rushing layer air-dry density is 0.35g/cm3—0.65 g/cm3；The thickness of second buffer layer is 1 with the ratio of first buffer layer thickness:2；
The diameter of described hexagonal hole is 1.2 times of second buffer layer.
Embodiment 3
The present embodiment provides a kind of prestressing force carbonization wood plank with creep resistant deforming performance, such as Fig. 5, including core, 1, and also wrap
Include the first buffer layer 3 being arranged on central layer 1 side and covering one layer of carbonization timber layer 2 on first buffer layer 3 surface, described core
Plate is provided with circular reinforcement blind hole 11 with the one side of the joint of first buffer layer.
Further, described first buffer layer and the ratio of the thickness of carbonization timber layer are 0.2:5；Described carbonization timber layer is by multilayer
Carbide wood wood skin is formed by stacking；Described carbide wood wood skin is planer wood skin or longitudinally oblique planing wood skin or laterally oblique planing wood skin；Described
The air-dry density of first buffer layer is 0.35g/cm3—0.65 g/cm3.
Further, described carbonization timber layer include successively from outside to inside one layer of flat cutting wood skin, one layer laterally tiltedly planing wood skin and
The oblique planing wood skin of one layer of longitudinal direction；Between flat cutting wood skin, laterally oblique planing wood skin, the angle of wood-fibred is 20 °；Laterally tiltedly planing wood skin, longitudinal direction are oblique
Wood-fibred angle between planing wood skin is 10 °.
Further, it is provided with the elastic gum bolt 4 with the cooperation of reinforcement blind hole in described reinforcement blind hole；Described carbonization timber layer 2
And between first buffer layer 3, between first buffer layer 3 and central layer 1, it is equipped with elastic glue-line 5.
Further, the described thickness of elasticity glue-line and the ratio of the thickness of first buffer layer are 1:30；Described reinforcement is blind
1.1 times of a diameter of core thickness in hole；The gross area of described reinforcement blind hole accounts for the 10% of central layer.
Preferably, described elastic gum bolt and elastic its raw material of glue-line include melamine formaldehyde resin adhesives by weight
15 parts, PET59 part, 13 parts of PA66,0.2 part of carbamate, 5 parts of methyl benzoate, 0.2 part of sodium chlorite, copper sulphate 0.08
Part.
Embodiment 4
The present embodiment provides a kind of prestressing force carbonization wood plank with creep resistant deforming performance, such as Fig. 6, including core, 1, and also wrap
Include the first buffer layer 3 being arranged on central layer 1 side and covering 2 layers of carbonization timber layer 2 on first buffer layer 3 surface, described core
Plate 1 is provided with circular reinforcement blind hole 11 with the one side of the joint of first buffer layer 3.
Further, described first buffer layer and the ratio of the thickness of carbonization timber layer are 1.5:5；Described carbonization timber layer is by multilayer
Carbide wood wood skin is formed by stacking；Described carbide wood wood skin is planer wood skin or longitudinally oblique planing wood skin or laterally oblique planing wood skin；Described
First buffer layer is that multilayer science and technology wood skin is formed by stacking.
Further, described carbonization timber layer include successively from outside to inside one layer of flat cutting wood skin, one layer laterally tiltedly planing wood skin and
The oblique planing wood skin of one layer of longitudinal direction；Between flat cutting wood skin, laterally oblique planing wood skin, the angle of wood-fibred is 21 °；Laterally tiltedly planing wood skin, longitudinal direction are oblique
Wood-fibred angle between planing wood skin is 10 °.
Further, it is provided with the elastic gum bolt 4 with the cooperation of reinforcement blind hole in described reinforcement blind hole 11；Described carbonization timber layer
And between first buffer layer, between first buffer layer and central layer, it is equipped with elastic glue-line 5.
Further, the described thickness of elasticity glue-line and the ratio of the thickness of first buffer layer are 1:40；Described reinforcement is blind
1.1 times of a diameter of core thickness in hole；The gross area of described reinforcement blind hole accounts for the 15% of central layer.
Preferably, it is additionally provided with second buffer layer 6 between described carbonization timber layer and first buffer layer；In described second buffer layer
It is provided with the hexagonal hole of array arrangement, the diameter of hexagonal hole and the consistency of thickness of second buffer layer；Second buffer layer gas is done close
Spend for 0.35g/cm3—0.65 g/cm3；The thickness of second buffer layer is 1 with the ratio of first buffer layer thickness:3；Described hexagon
The diameter in hole is 1.2 times of second buffer layer.
Preferably, described elastic gum bolt and elastic its raw material of glue-line include melamine formaldehyde resin adhesives by weight
15 parts, 70 parts of PET, 10 parts of PA66,0.5 part of carbamate, 0.5 part of methyl benzoate, 0.8 part of sodium chlorite, copper sulphate
0.01 part.
The present embodiment also provides a kind of method of the prestressing force carbonization wood plank prepared and have creep resistant deforming performance, including
Following operation：
S1. central layer, first buffer layer, second buffer layer and carbonization timber layer are prepared；
S2. the surface in central layer gets out reinforcement blind hole；
S3. prepare PUR, poured in described reinforcement blind hole, until PUR surface projects 1-3mm than core plate surface, cold
But obtain elastic gum bolt afterwards；
S4. in core plate surface coating hot-melt adhesive, carry out after covering first buffer layer pressing for the first time；
S5. in first buffer layer surface coating hot-melt adhesive, after covering second buffer layer, carry out second pressing；In second buffer layer
Surface coating hot-melt adhesive, carries out third time and presses after covering carbonization timber layer；
S6. there is described in obtaining after carrying out the 4th pressing the prestressing force carbonization wood plank of creep resistant deforming performance.
Further, described first time pressing refers to adopt plane mould with the condition pressing of 18MP pressure, 160 DEG C
160min；Described second pressing refers to adopt plane mould with the condition pressing 60min of 9MP pressure, 190 DEG C；Described 3rd
Secondary pressing refers to adopt plane mould with the condition pressing 50min of 12MP pressure, 200 DEG C；Described 4th hot pressing refers to adopt
Plane mould with the condition pressing 70min of 25MP pressure, 120 DEG C, presses 30min with the condition of 30MP pressure, 90 DEG C successively,
Condition pressing 100min with 35MP pressure, 30 DEG C.
Embodiment 5
The present embodiment provides a kind of prestressing force carbonization wood plank with creep resistant deforming performance, and its structure is consistent with embodiment 4.
Preferably, described elastic gum bolt and elastic its raw material of glue-line include melamine formaldehyde resin adhesives by weight
20 parts, 50 parts of PET, 15 parts of PA66,0.1 part of carbamate, 7 parts of methyl benzoate, 0.1 part of sodium chlorite, copper sulphate
0.15 part.
The present embodiment also provides a kind of method of the prestressing force carbonization wood plank prepared and have creep resistant deforming performance, including
Following operation：
S1. central layer, first buffer layer, second buffer layer and carbonization timber layer are prepared；
S2. the surface in central layer gets out reinforcement blind hole；
S3. prepare PUR, poured in described reinforcement blind hole, until PUR surface projects 1-3mm than core plate surface, cold
But obtain elastic gum bolt afterwards；
S4. in core plate surface coating hot-melt adhesive, carry out after covering first buffer layer pressing for the first time；
S5. in first buffer layer surface coating hot-melt adhesive, after covering second buffer layer, carry out second pressing；In second buffer layer
Surface coating hot-melt adhesive, carries out third time and presses after covering carbonization timber layer；
S6. there is described in obtaining after carrying out the 4th pressing the prestressing force carbonization wood plank of creep resistant deforming performance.
Further, described first time pressing refers to adopt plane mould with the condition pressing of 15MP pressure, 200 DEG C
150min；Described second pressing refers to adopt plane mould with the condition pressing 70min of 9MP pressure, 150 DEG C；Described 3rd
Secondary pressing refers to adopt plane mould with the condition pressing 50min of 10MP pressure, 200 DEG C；Described 4th hot pressing refers to adopt
Plane mould with the condition pressing 70min of 35MP pressure, 130 DEG C, presses 30min with the condition of 20MP pressure, 90 DEG C successively,
Condition pressing 100-200min with 45MP pressure, 20 DEG C.
Embodiment 6
The present embodiment provides a kind of prestressing force carbonization wood plank with creep resistant deforming performance, and its structure is caused with embodiment 3.
Preferably, described elastic gum bolt and elastic its raw material of glue-line include melamine formaldehyde resin adhesives by weight
20 parts, PET70 part, 15 parts of PA66,7 parts of methyl benzoate, 0.8 part of sodium chlorite.
Embodiment 7
The present embodiment provides a kind of prestressing force carbonization wood plank with creep resistant deforming performance, and its structure is caused with embodiment 3.
Preferably, described elastic gum bolt and elastic its raw material of glue-line include melamine formaldehyde resin adhesives by weight
20 parts, PET70 part, 15 parts of PA66,0.5 part of carbamate, 0.15 part of copper sulphate.
The two ends of the elastic gum bolt of embodiment 2-7 are applied respectively the pulling force of 5000N, maintain 100.Test its length to increase
Long rate.Its result such as table 1.
Table 1.
| Experimental group | Length increases（%） |
| Embodiment 2 | 3.21 |
| Embodiment 3 | 0.87 |
| Embodiment 4 | 0.53 |
| Embodiment 5 | 0.98 |
| Embodiment 6 | 3.52 |
| Embodiment 7 | 3.91 |
Using standard GB/T/T 24137-2009, the said goods are tested, its result such as table 2.
Table 2.
| Experimental group | Expansion rate of water absorption % | Flexural strength, MPA | Dimensional stability, % | Elastic glue-line bonding strength/MPa |
| Embodiment 1 | 0.67 | 41.0 | 1.4 | 0.58 |
| Embodiment 2 | 0.83 | 43.7 | 1.5 | 0.32 |
| Embodiment 3 | 0.45 | 49.4 | 1.3 | 0.73 |
| Embodiment 4 | 0.31 | 55.8 | 1.1 | 0.89 |
| Embodiment 5 | 0.21 | 54.7 | 1.0 | 0.94 |
| Embodiment 6 | 0.91 | 38.2 | 1.9 | 0.43 |
| Embodiment 7 | 0.90 | 31.2 | 1.8 | 0.47 |
Durability test.
The product of comparative example and embodiment is pasted onto in a metope, successively it is applied with following experiment conditions：
A.85 DEG C, relative humidity 90%, being filled with oxygen makes the xenon lamp aging case that in the air oxygen volume reaches 80%, 1KW process
1000 hours, edges of boards applied the pulling force of 5000N；
B.45 DEG C, relative humidity 10%, 2KW sodium vapor lamp irradiates 1000 hours, and edges of boards apply the pulling force of 5000N.
Record the outward appearance of each experimental group dalle, as shown in table 3.
| Experimental group | A tests | B tests |
| Embodiment 1 | Surfacing, has slight bubbling, and edge interlayer has Be slightly separated, the deformation such as warpage. | Surfacing, has slight bubbling, and edge interlayer has slightly Separation, warpage etc. deform. |
| Embodiment 2 | Surfacing, has slight bubbling, and edge interlayer has Be slightly separated, the deformation such as warpage. | Surfacing, has obvious bubbling, and edge interlayer has substantially Separation, warpage etc. deform. |
| Embodiment 3 | Smooth surface, smooth, no bubbling, cracking etc. be not no Good problem, Coating combination closely, no separates, sticks up Song etc. deforms. | Smooth surface, smooth, no bubbling, cracking etc. are bad asks Topic, Coating combination closely, no separates, the deformation such as warpage. |
| Embodiment 4 | Smooth surface, smooth, no bubbling, cracking etc. be not no Good problem, Coating combination closely, no separates, sticks up Song etc. deforms. | Smooth surface, smooth, no bubbling, cracking etc. are bad asks Topic, Coating combination closely, no separates, the deformation such as warpage. |
| Embodiment 5 | Smooth surface, smooth, no bubbling, cracking etc. be not no Good problem, Coating combination closely, no separates, sticks up Song etc. deforms. | Smooth surface, smooth, no bubbling, cracking etc. are bad asks Topic, Coating combination closely, no separates, the deformation such as warpage. |
| Embodiment 6 | Surfacing, has slight bubbling, and edge interlayer has Be slightly separated, the deformation such as warpage. | Surfacing, has obvious bubbling, and edge interlayer has substantially Separation, warpage etc. deform. |
| Embodiment 7 | Surfacing, has slight bubbling, and edge interlayer has Be slightly separated, the deformation such as warpage. | Surfacing, has slight bubbling, and edge interlayer has slightly Separation, warpage etc. deform. |
It is the wherein specific implementation of the present invention above, its description is more concrete and detailed, but can not therefore be interpreted as
Restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from this
On the premise of bright design, some deformation can also be made and improve, these obvious alternative forms belong to the present invention's
Protection domain.
Claims (9)
1. a kind of prestressing force carbonization wood plank with creep resistant deforming performance, including central layer it is characterised in that：Also include arranging
At least one of which carbonization timber layer on first buffer layer surface for the first buffer layer and covering in central layer one or both sides, described core
Plate is provided with circular reinforcement blind hole with the one side of the joint of first buffer layer.
2. the prestressing force carbonization wood plank with creep resistant deforming performance according to claim 1 it is characterised in that：Described
First buffer layer with the ratio of the thickness of carbonization timber layer is（0.2-2）:5；Described carbonization timber layer is by multilayer carbide wood wood skin overlapping
Become；Described carbide wood wood skin is planer wood skin or longitudinally oblique planing wood skin or laterally oblique planing wood skin；The gas of described first buffer layer is done
Density is 0.35g/cm3—0.65 g/cm3.
3. the prestressing force carbonization wood plank with creep resistant deforming performance according to claim 2 it is characterised in that：Described
Carbonization timber layer includes one layer of flat cutting wood skin, one layer of laterally tiltedly planing wood skin and the oblique planing wood skin of one layer of longitudinal direction from outside to inside successively；Flat cutting
Between wood skin, laterally oblique planing wood skin, the angle of wood-fibred is 20-25 °；Laterally tiltedly the wood-fibred between planing wood skin, longitudinal tiltedly planing wood skin presss from both sides
Angle is 10-15 °.
4. the prestressing force carbonization wood plank with creep resistant deforming performance according to claim 1 it is characterised in that：Described
It is provided with the elastic gum bolt with the cooperation of reinforcement blind hole in reinforcement blind hole；Between described carbonization timber layer and first buffer layer, first buffer layer
It is equipped with elastic glue-line and between central layer.
5. the prestressing force carbonization wood plank with creep resistant deforming performance according to claim 4 it is characterised in that：Described
The both sides of central layer are equipped with described first buffer layer；The described thickness of elasticity glue-line and the ratio of the thickness of first buffer layer are 1:
30-1:50；0.9-1.1 times of a diameter of core thickness of described reinforcement blind hole；The gross area of described reinforcement blind hole accounts for central layer
10%-15%.
6. the prestressing force carbonization wood plank with creep resistant deforming performance according to claim 1 or 4 it is characterised in that：
It is additionally provided with second buffer layer between described carbonization timber layer and first buffer layer；Described second buffer layer is provided with the six of array arrangement
Side shape hole, the diameter of hexagonal hole and the consistency of thickness of second buffer layer；Second buffer layer air-dry density is 0.35g/cm3—
0.65 g/cm3；The thickness of second buffer layer is 1 with the ratio of first buffer layer thickness:2—1:5；The diameter of described hexagonal hole
It is 1.2 times of second buffer layer.
7. the prestressing force carbonization wood plank with creep resistant deforming performance according to claim 4 it is characterised in that：Described
Elastic gum bolt and elastic its raw material of glue-line include melamine formaldehyde resin adhesives 10-20 part, PET 50-70 by weight
Part, PA66 10-15 part, carbamate 0.1-0.5 part, methyl benzoate 0.5-7 part, sodium chlorite 0.1-0.8 part, sulfuric acid
Copper 0.01-0.15 part.
8. a kind of method preparing the prestressing force carbonization wood plank with creep resistant deforming performance, including following operation：
S1. central layer, first buffer layer, second buffer layer and carbonization timber layer are prepared；
S2. the surface in central layer gets out reinforcement blind hole；
S3. prepare PUR, poured in described reinforcement blind hole, until PUR surface projects 1-3mm than core plate surface, cold
But obtain elastic gum bolt afterwards；
S4. in core plate surface coating hot-melt adhesive, carry out after covering first buffer layer pressing for the first time；
S5. in first buffer layer surface coating hot-melt adhesive, after covering second buffer layer, carry out second pressing；In second buffer layer
Surface coating hot-melt adhesive, carries out third time and presses after covering carbonization timber layer；
S6. there is described in obtaining after carrying out the 4th pressing the prestressing force carbonization wood plank of creep resistant deforming performance.
9. method according to claim 8 it is characterised in that：Described first time pressing refers to adopt plane mould with 15-
20MP pressure, 150-200 DEG C of condition pressing 150-170min；Described second pressing refers to adopt plane mould with 8-9MP
Pressure, 150-200 DEG C of condition pressing 50-70min；Described third time pressing refers to adopt plane mould to press with 10-15MP
Power, 150-200 DEG C of condition pressing 50-70min；Described 4th hot pressing refers to adopt plane mould to press with 20-35MP successively
Power, 130-150 DEG C of condition pressing 50-70min, press 30-40min with the condition of 20-35MP pressure, 80-90 DEG C, with
35-45MP pressure, 20-30 DEG C of condition pressing 100-200min.
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| CN115741910A (en) * | 2022-11-16 | 2023-03-07 | 广州美伽俪整体家居宅配有限公司 | Anti-deformation solid wood furniture board and production process thereof |
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