CN108656247A - A kind of dipping fiber-Wooden veneer laminar composite and preparation method thereof - Google Patents

A kind of dipping fiber-Wooden veneer laminar composite and preparation method thereof Download PDF

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Publication number
CN108656247A
CN108656247A CN201810321407.2A CN201810321407A CN108656247A CN 108656247 A CN108656247 A CN 108656247A CN 201810321407 A CN201810321407 A CN 201810321407A CN 108656247 A CN108656247 A CN 108656247A
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China
Prior art keywords
tannin
fiber
wooden veneer
dipping
dipping fiber
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CN201810321407.2A
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CN108656247B (en
Inventor
周晓剑
杜官本
张俊
王辉
曹明
雷洪
徐洋
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Southwest Forestry University
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Southwest Forestry University
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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
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G11/00—Applying adhesives or glue to surfaces of wood to be joined
    • 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
    • B32B21/10—Next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/042—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
    • C08G65/36—Furfuryl alcohol
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
    • C08G65/38—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives derived from phenols
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
    • F41J1/00—Targets; Target stands; Target holders
    • F41J1/01—Target discs characterised by their material, structure or surface, e.g. clay pigeon targets characterised by their material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K2240/00—Purpose of the treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K2240/00—Purpose of the treatment
    • B27K2240/30—Fireproofing
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • B32B2262/065—Lignocellulosic fibres, e.g. jute, sisal, hemp, flax, bamboo
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • 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
    • B32B2307/558—Impact strength, toughness

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

The present invention relates to a kind of dipping fiber Wooden veneer laminar composites and preparation method thereof.It is made of Wooden veneer and dipping fiber, it is binded by tannin furane resins between Wooden veneer and dipping fiber, the dipping fiber is mixed by the polyester fiber that mass fraction is 85 92% hemps and mass fraction is 8~15%, the Wooden veneer is using fast growing wood as raw material, thickness is 2mm, moisture content 7%.A kind of dipping fiber Wooden veneer laminar composite of the present invention and preparation method thereof, which has excellent fire protecting performance and anti-penetration performance.The fire prevention of the present invention, the raw material of puncture resistant composite are both from biological material, health environment-friendly.The functional form tannin resin dipping fiber Wooden veneer laminar composite preparation process of the present invention is simple, easy to operate, has preferable mechanical strength and fire prevention, anti-puncture characteristics, the substitute and bow and arrow target range targets for arrow that can be used for glued board prepare material.

Description

A kind of dipping fiber-Wooden veneer laminar composite and preparation method thereof
Technical field
The present invention relates to a kind of dipping fiber-Wooden veneer laminar composites and preparation method thereof, and in particular to a kind of Functional form tannin resin impregnates fiber-Wooden veneer laminar composite and preparation method thereof, belongs to Wood-based Panel Production technology neck Domain.
Background technology
Glued board is leading products particularly important in wood-based panel industry, is to realize forestry sustainable development strategy and effectively Utilize the important means of timber resources.Glued board overcomes the anisotropic characteristic of natural timber, its performance is made more to stablize.Glue Plywood preparation must comply with following three basic principles：Symmetry principle, it is desirable that the veneer of glued board ymmetry center plane both sides exists Material, moisture content, grain direction, thickness and number of plies etc. all should be symmetrical；Interlayer texture arranges principle, adjacent layer list The fiber pattern direction of plate will be mutually perpendicular to；Odd-level principle, glued board will meet two above principle, must be just odd number Layer.The outer layer of glued board is called dash board, and sandwich layer part veneer is known as core plate.
Glued board is a main path for improving timber utilization rate, in order to promote the added value of glued board, realizes product Update, faced deorative glued board becomes to become more and more popular and get consumer reception.Have article and patented technology shows After normal plywood surface is by hot pressing and overlay film one or more layers material, the performance and added value of glued board greatly promote, These materials mainly have impregnated paper, thermoplastic resin material, fabrics and slicing wood skin etc..But these techniques are only capable of being promoted glued The partial properties that plate natively has, it is difficult to assign some special functional characteristic, such as fire performance, anti-puncture characteristics Deng.Separately there is technology to show that glued board can assign some special function in preparation process by the addition of various auxiliary agents Characteristic, still, the increase of these properties of glued board undesirably increases cost.The use of a large amount of additives is not only So that the impregnation technique of adhesive is become more complicated, and destruction is also resulted in environment.Most of all, what glued board used Resin adhesive, which is also inevitable, has used much raw materials from petroleum chemicals, and there are raw material is non-renewable and formaldehyde is released A series of problems, such as putting.
In bow and arrow shooting gallery, the material of targets for arrow is most important, and common targets for arrow material mainly has careless target, ethyl vinyl acetate The materials such as ethylene copolymer (EVA), polyethylene foam-material (XPE), X10, pearl cotton plate and extruded sheet targets for arrow.These materials are not Only to meet certain resistance arrow and vertical arrow characteristic, also there is certain elasticity recovery and portable function, prevent from not pierced by bow and arrow It wears, it is often more important that bow and arrow is easier to extract.So the objective of targets for arrow material is exactly not only to have certain spring function and strong Degree, but also requirement cannot have too strong nail-holding ability, in order to which bow and arrow is easier to extract.Current technology and product is more difficult has both The above feature, the strength of materials is high, the more difficult extraction of bow and arrow, and has broken foam after extracting and fall.The shortcomings that EVA is durability Difference has a large amount of broken foams and falls after repeatedly shooting；XPE has preferable resistance arrow ability, but cost is higher, and pulls out arrow and compare It is difficult；Pearl cotton plate durability is good, but hinders arrow poor ability；The deformation recovery capability and resistance arrow ability of extruded sheet are very poor, use It is less.In many occasions, these material layers are often combined into the making for targets for arrow after thicker material, but these materials All there are one fatal weakness for material, belong to combustible material.
Tannin resin dipping fiber and dipping paper are studied by current research team, still, some passes The problem of keyness, not yet solves, and the composite material of preparation does not simultaneously have the functional characteristics such as fire-retardant and anti-puncture.
Invention content
In view of this, the present invention provides a kind of functional form tannin resins to impregnate fiber-Wooden veneer laminar composite, The composite material has preferable fire-retardant and anti-puncture characteristics, while providing the preparation method of the laminar composite, reference Glued board assembly principle is combined in such a way that dipping fiber-veneer-dipping fiber-veneer recycles successively, ensures dipping Fiber is odd-level with total number of plies that Wooden veneer adds up, and surface layer is that tannin resin impregnates fiber.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of dipping fiber-Wooden veneer laminar composite is made of, Wooden veneer Wooden veneer and dipping fiber Dipping fiber between binded by tannin furane resins, the dipping fiber by mass fraction be 85-92% hemps with The polyester fiber that mass fraction is 8~15% mixes, and the Wooden veneer is using fast growing wood as raw material, and thickness 2mm is aqueous Rate is 7%；The solid content of tannin furane resins is 50~70%.
The mode that laminar composite is recycled superposition by dipping fiber-Wooden veneer successively forms, the total layer added up Number is odd-level, and the surface layer of laminar composite is dipping fiber, and the density before the dipping fiber impregnation is 0.5~0.8kg/ m2, moisture content 6-10%, thickness is 10~50mm, and the fast growing wood is Eucalyptus or pine.
The tannin furane resins are by tannin, water, furfuryl alcohol and hexamethylenetetramine solution composition, the tannin, water, furfuryl alcohol Mass ratio with hexamethylenetetramine solution is 100:100:(25-100)：(6-12), hexamethylenetetramine solution used it is dense Degree is 30%.
The preparation method of the tannin furane resins is following steps：
1) tannin powder is slowly added into water, while be added while stir, it is to be mixed uniformly after, addition hexamethylenetetramine Solution stirs to obtain tannin aqueous solution；
2) furfuryl alcohol is added in tannin aqueous solution, is stirred, body is adjusted with a concentration of 45% NaOH solution The pH value of system to 5-9 to get.
A kind of preparation method of dipping fiber-Wooden veneer laminar composite, is following steps：
1) dipping fiber is totally submerged in tannin furane resins, it will be extra resin extruded with extrusion equipment, it is ensured that The tannin furane resins quality of dipping is 2000~2500g/m2, the dipping fiber of tannin resin was impregnated in constant temperature, constant humidity item Balance to moisture content is 10~20% in part；
2) Wooden veneer is placed in pressurized canister, tannin furane resins is then injected into pressurized canister, are forced into 2.0MPa, pressurize 2h make tannin furane resins penetrate into inside Wooden veneer under high pressure, then will impregnate tannin furans tree The Wooden veneer of fat is positioned in baking oven, and it is 6-10% to be dried to moisture content；
3) the dipping fiber of dipping that step 1) obtains tannin resin was impregnated into tannin furane resins with step 2) Wooden veneer is folded into together successively, and laminar composite then is made using heat pressing process, and hot pressing pressure is 25kg/ cm2, hot pressing time is 1~1.5min/mm, and temperature is 150~180 DEG C.
The composite material has excellent fire protecting performance and anti-penetration performance, fire prevention of the invention, puncture resistant composite Raw material both from biological material, health environment-friendly.Functional form tannin resin dipping fiber-Wooden veneer lamination of the present invention Composite material preparation process is simple, easy to operate, has preferable mechanical strength and anti-puncture characteristics, can be used for replacing for glued board Dai Pin and bow and arrow target range targets for arrow prepare material.
The present invention directly utilizes the assembly principle of glued board, by fiber and veneer under the action of environmental protection type resin, assembly At the fiber similar to glued board-veneer laminar composite, the fire prevention of this material, puncture-proof function are imparted.
The present invention has the beneficial effect that：Dipping fiber and veneer can be significantly improved using the tannin furane resins of the present invention Flame-retarding characteristic, the laminar composite prepared after special assembly technique have certain functional characteristic.
Description of the drawings
Fig. 1 is the structural schematic diagram of present invention dipping fiber-Wooden veneer laminar composite.
Wherein：1 is Wooden veneer, and 2 be dipping fiber
Specific implementation mode
Presently in connection with drawings and examples, specifically the present invention is described in further detail.
As shown in Figure 1, a kind of dipping fiber-Wooden veneer laminar composite, by Wooden veneer 1 and dipping fiber 2 Composition is binded between Wooden veneer 1 and dipping fiber 2 by tannin furane resins, and the dipping fiber is 85- by mass fraction The polyester fiber that 92% hemp and mass fraction are 8~15% mixes, and the Wooden veneer 1 is original with fast growing wood Material, thickness 2mm, moisture content 7%；The solid content of tannin furane resins is 50~70%.
The mode that laminar composite is recycled superposition by dipping fiber-Wooden veneer successively forms, the total layer added up Number is odd-level, and the surface layer of laminar composite is dipping fiber, and the density before the dipping fiber impregnation is 0.5~0.8kg/ m2, moisture content 6-10%, thickness is 10~50mm, and the fast growing wood is Eucalyptus or pine.
The tannin furane resins are by tannin, water, furfuryl alcohol and hexamethylenetetramine solution composition, the tannin, water, furfuryl alcohol Mass ratio with hexamethylenetetramine solution is 100:100:(25-100)：(6-12), hexamethylenetetramine solution used it is dense Degree is 30%.
The preparation method of the tannin furane resins is following steps：
1) tannin powder is slowly added into water, while be added while stir, it is to be mixed uniformly after, addition hexamethylenetetramine Solution stirs to obtain tannin aqueous solution；
2) furfuryl alcohol is added in tannin aqueous solution, is stirred, body is adjusted with a concentration of 45% NaOH solution The pH value of system to 5-9 to get.
A kind of preparation method of dipping fiber-Wooden veneer laminar composite, is following steps：
1) dipping fiber is totally submerged in tannin furane resins, it will be extra resin extruded with extrusion equipment, it is ensured that The tannin furane resins quality of dipping is 2000~2500g/m2, the dipping fiber of tannin resin was impregnated in constant temperature, constant humidity item Balance to moisture content is 10~20% in part；
2) Wooden veneer is placed in pressurized canister, tannin furane resins is then injected into pressurized canister, are then forced into 2.0MPa, pressurize 2h make tannin furane resins penetrate into inside Wooden veneer under high pressure, then will impregnate tannin furans tree The Wooden veneer of fat is positioned in baking oven, and it is 6-10% to be dried to moisture content；
3) the dipping fiber of dipping that step 1) obtains tannin resin was impregnated into tannin furane resins with step 2) Wooden veneer is folded into together successively, and laminar composite then is made using heat pressing process, and hot pressing pressure is 25kg/ cm2, hot pressing time is 1~1.5min/mm, and temperature is 150~180 DEG C.
Embodiment 1
As shown in Figure 1, a kind of functional form tannin resin of the present invention impregnates fiber-Wooden veneer laminar composite, It is made of Wooden veneer 1 and dipping fiber 2, is binded by tannin furane resins between Wooden veneer 1 and dipping fiber 2, it is described The polyester fiber that dipping fiber 2 is 92% hemp by mass fraction and mass fraction is 8% mixes, the wooden list Plate 1 is using fast growing wood as raw material, thickness 2mm, moisture content 7%；The solid content of tannin furane resins is 60%.
The mode that laminar composite is recycled superposition by dipping fiber-Wooden veneer successively forms, the total layer added up Number is three layers, and the surface layer of laminar composite is dipping fiber, and the density before the dipping fiber impregnation is 0.6kg/m2, aqueous Rate is 8%, thickness 10mm, and the fast growing wood is pine.
The technology of preparing scheme of dipping tannin resin is as follows：
1) the tannin powder of 100g is slowly added into the water of 100g, while be added while stir, it is to be mixed uniformly after, addition The hexamethylenetetramine of 6g a concentration of 30%, stirs, spare.
2) 50g furfuryl alcohols are added in tannin aqueous solution, are stirred, adjusted with a concentration of 45% NaOH solution The pH value of system is 5 to get flame retardant resin.
The preparation method that functional form tannin resin impregnates fiber-Wooden veneer laminar composite is as follows：
1) fiber block is totally submerged the 1h in configured good tannin furane resins solution, it will be extra with extrusion equipment Resin extruded, impregnation increment is controlled in 2000g/m2, the fiber block for impregnating tannin resin balances in constant temperature, constant humidity condition to mesh Moisture content is marked, it is spare；
2) Wooden veneer is positioned in the pressurized canister of a constant volume, the tannin furan mixed up is then injected into pressurized canister Furane resins solution is forced into 2.0MPa, and pressurize 2h makes tannin furane resins be penetrated into inside veneer under condition of negative pressure, dipping The Wooden veneer for crossing tannin furane resins is positioned in baking oven, is dried to target moisture content, spare.
It impregnated the group blank technology of the fiber block and Wooden veneer of tannin furane resins as described above and carries out assembly, really The moisture content of dipping fiber is 10% before thermal protection pressure, Veneer moisture 10%.The good dipping fiber-Wooden veneer layer of assembly Pressure composite material is put into vulcanizing press under the premise of not applying any Resin adhesive and carries out hot pressing, hot pressing pressure：25kg/ cm2, hot pressing time：1min/mm, hot pressing temperature：160℃.Hot-forming tannin resin dipping fiber-Wooden veneer lamination is multiple Condensation material is with fire prevention, puncture-proof functional material.
Embodiment 2
A kind of dipping fiber-Wooden veneer laminar composite is made of, Wooden veneer Wooden veneer and dipping fiber 1 and dipping fiber 2 between binded by tannin furane resins, the dipping fiber 2 by mass fraction be 88% hemp with The polyester fiber that mass fraction is 12% mixes, and the Wooden veneer 1 is using fast growing wood as raw material, thickness 2mm, moisture content It is 7%；The solid content of tannin furane resins is 60%.
The mode that laminar composite is recycled successively by dipping fiber-Wooden veneer forms, and the total number of plies added up is Seven layers, the surface layer of laminar composite is dipping fiber, and the density before the dipping fiber impregnation is 0.5kg/m2, moisture content is 8%, thickness 20mm, the fast growing wood are pine.
The technology of preparing scheme of tannin resin is as follows：
1) the tannin powder of 100g is slowly added into the water of 100g, while be added while stir, it is to be mixed uniformly after, addition The hexamethylenetetramine of 10g a concentration of 30%, stirs, spare.
2) 100g furfuryl alcohols are added in tannin aqueous solution, are stirred, with a concentration of 45% NaOH solution tune The pH value of section system is 9 to get flame retardant resin.
The technology of preparing scheme that functional form tannin resin impregnates fiber-Wooden veneer laminar composite is as follows：
1) fiber block is totally submerged the 1h in configured good tannin furane resins solution, it will be extra with extrusion equipment It is resin extruded, it is ensured that impregnation increment is controlled in 2500g/m2, the fiber block for impregnating tannin resin balances in constant temperature and humidity condition It is spare to target moisture content.
2) Wooden veneer is positioned in the pressurized canister of a constant volume, the tannin furan mixed up is then injected into pressurized canister Furane resins solution is forced into 2.0MPa, and pressurize 2h makes tannin furane resins be penetrated into inside veneer under condition of negative pressure, dipping The Wooden veneer for crossing tannin furane resins is positioned in baking oven, is dried to target moisture content, spare.
It impregnated the group blank technology of the fiber block and Wooden veneer of tannin furane resins as described above and carries out assembly, really The moisture content of dipping fiber is 18% before thermal protection pressure, Veneer moisture 6%.The good dipping fiber-Wooden veneer layer of assembly Pressure composite material is put into vulcanizing press under the premise of not applying any Resin adhesive and carries out hot pressing, hot pressing pressure：25kg/ cm2, hot pressing time：1min/mm, hot pressing temperature：150℃.Hot-forming dipping fiber-Wooden veneer laminar composite is To have fire prevention, puncture-proof functional material.
Embodiment 3
A kind of dipping fiber-Wooden veneer laminar composite is made of, wooden list Wooden veneer 1 and dipping fiber 2 It is binded by tannin furane resins between plate 1 and dipping fiber 2, the dipping fiber 2 is 88% hemp by mass fraction The polyester fiber for being 12% with mass fraction mixes, and the Wooden veneer 1 is using fast growing wood as raw material, and thickness 2mm is aqueous Rate is 7%；The solid content of tannin furane resins is 60%.
The mode that laminar composite is recycled successively by dipping fiber-Wooden veneer forms, and the total number of plies added up is Five layers, the surface layer of laminar composite is dipping fiber, and the density before the dipping fiber impregnation is 0.7kg/m2, moisture content is 8%, thickness 50mm, the fast growing wood are Eucalyptus.
The technology of preparing scheme of dipping tannin resin is as follows：
1) the tannin powder of 100g is slowly added into the water of 100g, while be added while stir, it is to be mixed uniformly after, addition The hexamethylenetetramine of 12g a concentration of 30%, stirs, spare.
2) 100g furfuryl alcohols are added in tannin aqueous solution, are stirred, with a concentration of 45% NaOH solution tune The pH value of section system is 5 to get flame retardant resin.
The technology of preparing scheme that functional form tannin resin impregnates fiber-Wooden veneer laminar composite is as follows：
1) fiber block is totally submerged the 1h in configured good tannin furane resins solution, the control of fiber impregnation amount exists 2500g/m2, it will be extra resin extruded with extrusion equipment, the fiber block for impregnating tannin resin is put down in constant temperature, constant humidity condition Weighing apparatus is spare to target moisture content.
2) Wooden veneer is positioned in the pressurized canister of a constant volume, the tannin furan mixed up is then injected into pressurized canister Furane resins solution is forced into 2.0MPa, and pressurize 2h makes tannin furane resins be penetrated into inside veneer under condition of negative pressure, dipping The Wooden veneer for crossing tannin furane resins is positioned in baking oven, is dried to target moisture content, spare.
It impregnated the group blank technology of the fiber block and Wooden veneer of tannin furane resins as described above and carries out assembly, really The moisture content of dipping fiber is 15% before thermal protection pressure, Veneer moisture 8%.The good dipping fiber-Wooden veneer layer of assembly Pressure composite material is put into vulcanizing press under the premise of not applying any Resin adhesive and carries out hot pressing, hot pressing pressure：25kg/ cm2, hot pressing time：1.5min/mm, hot pressing temperature：180℃.Hot-forming dipping fiber-Wooden veneer laminar composite As there is fire prevention, puncture-proof functional material.
The functional material of 1-3 preparations of the embodiment of the present invention is utilized respectively as experimental group, commercially available high-end ecological glue Plywood as a control group 1 and outdoor plywood as a control group 2, is tested, concrete outcome is as shown in table 1 below：
The performance comparison of table 1. embodiment and control group material
By comparison, for functional material of the invention compared with existing glued board, flame retardant effect is preferable, and surrender is strong Degree height can show that the anti-penetration ability of the composite material is stronger, and nail-holding ability is small, obtains the material after the effect of bow and arrow, bow and arrow is more It is easy to extract, while will not attacking material surface, it is often more important that E0 grades of requirements are fully achieved in the formaldehydeless release of the material.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to compared with Good embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this In the right of invention.

Claims (5)

1. a kind of dipping fiber-Wooden veneer laminar composite, which is characterized in that it is made of Wooden veneer and dipping fiber, It is binded by tannin furane resins between Wooden veneer and dipping fiber, the dipping fiber is that 85-92% is big by mass fraction The polyester fiber that flaxen fiber and mass fraction are 8~15% mixes, and using fast growing wood as raw material, thickness is the Wooden veneer 2mm, moisture content 7%；The solid content of tannin furane resins is 50~70%, and pH value is 5~9.
2. a kind of dipping fiber-Wooden veneer laminar composite as described in claim 1, which is characterized in that it is by impregnating The mode that fiber-Wooden veneer recycles superposition successively forms, and total number of plies that laminar composite adds up is odd-level, and lamination is multiple The surface layer of condensation material is dipping fiber, and the density before the dipping fiber impregnation is 0.5~0.8kg/m2, moisture content 6- 10%, thickness is 10~50mm, and the fast growing wood is Eucalyptus or pine.
3. a kind of dipping fiber-Wooden veneer laminar composite as described in claim 1, which is characterized in that the tannin For furane resins by tannin, water, furfuryl alcohol and hexamethylenetetramine solution composition, the tannin, water, furfuryl alcohol and hexamethylenetetramine are molten The mass ratio of liquid is 100:100:(25-100)：(6-12), a concentration of the 30% of hexamethylenetetramine solution used.
4. a kind of dipping fiber-Wooden veneer laminar composite as claimed in claim 3, which is characterized in that the tannin The preparation method of furane resins is following steps：
1) tannin powder is slowly added into water, while be added while stir, it is to be mixed uniformly after, addition hexamethylenetetramine solution, It stirs to obtain tannin aqueous solution；
2) furfuryl alcohol is added in tannin aqueous solution, is stirred, with a concentration of 45% NaOH solution regulation system PH value to 5-9 to get.
5. a kind of preparation method of dipping fiber-Wooden veneer laminar composite, which is characterized in that be following steps：
1) dipping fiber is totally submerged in tannin furane resins, it will be extra resin extruded with extrusion equipment, it is ensured that dipping Tannin furane resins quality be 2000~2500g/m2, the dipping fiber of tannin resin was impregnated in constant temperature, constant humidity condition Balance to moisture content is 10~20%；
2) Wooden veneer is placed in pressurized canister, tannin furane resins is then injected into pressurized canister, are then forced into 2.0MPa, pressurize 2h make tannin furane resins penetrate into inside Wooden veneer under high pressure, then will impregnate tannin furans tree The Wooden veneer of fat is positioned in baking oven, and it is 6-10% to be dried to moisture content；
3) the dipping fiber of dipping that step 1) obtains tannin resin was impregnated into the wooden of tannin furane resins with step 2) Veneer is folded into together successively, and laminar composite then is made using heat pressing process, and hot pressing pressure is 25kg/cm2, heat The pressure time is 1~1.5min/mm, and temperature is 150~180 DEG C.
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CN110154459A (en) * 2019-05-21 2019-08-23 西南林业大学 A kind of high intensity palm fibrous composite and preparation method
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