CN107471392A - A kind of particieboard of low burst size of methanal and preparation method thereof - Google Patents

A kind of particieboard of low burst size of methanal and preparation method thereof Download PDF

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Publication number
CN107471392A
CN107471392A CN201710743590.0A CN201710743590A CN107471392A CN 107471392 A CN107471392 A CN 107471392A CN 201710743590 A CN201710743590 A CN 201710743590A CN 107471392 A CN107471392 A CN 107471392A
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CN
China
Prior art keywords
particieboard
sandwich layer
burst size
vent
middle layer
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Pending
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CN201710743590.0A
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Chinese (zh)
Inventor
汪六
汪六一
宋从发
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Anhui Zhibo New Material Technology Co Ltd
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Anhui Zhibo New Material Technology Co Ltd
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Priority to CN201710743590.0A priority Critical patent/CN107471392A/en
Publication of CN107471392A publication Critical patent/CN107471392A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
    • 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
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
    • B27M1/06—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by burning or charring, e.g. cutting with hot wire
    • 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
    • B27N1/00—Pretreatment of moulding material
    • 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
    • B27N3/08—Moulding or pressing
    • 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
    • B27N3/08—Moulding or pressing
    • B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
    • 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
    • B32B21/02—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
    • 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
    • B32B21/13—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board all layers being exclusively wood
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • 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
    • B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
    • 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
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • 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
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—Coating
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/08—Coating on the layer surface on wood 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • 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
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/026—Wood 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/758—Odour absorbent
    • 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
    • B32B2607/00—Walls, panels

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The present invention relates to particieboard technical field, specifically a kind of particieboard of low burst size of methanal and preparation method thereof, including mixing and stirring the adhesive sandwich layer that forms of compacting by wood particle and being arranged on the top layer solid wood board of sandwich layer both sides, the thickness ratio on described sandwich layer and top layer is 1：(0.06~0.125), interval is stamped with the air-vent through sandwich layer on described sandwich layer；Described sandwich layer includes the material of following parts by weight：300~700 parts of wood particle, 1.5~6 parts of coupling agent, 5~18 parts of adhesive, 3~8 parts of paraffin wax emulsions, 0.1~1.5 part of polyvinyl alcohol；Described wood particle first passes through vacuum carburization processing in advance, and described air-vent is easy to carry out a large amount of, the quick release of formaldehyde after the sandwich layer sheet metal forming of particieboard, reduces the formaldehyde amount discharged during the use of particieboard later stage；The wood particle for forming middle layer plate is handled by vacuum carburization, and the carburization zone that surface is formed can adsorb to the formaldehyde in adhesive, slow down the rate of release of later stage formaldehyde.

Description

A kind of particieboard of low burst size of methanal and preparation method thereof
Technical field
The present invention relates to particieboard technical field, the particieboard of specifically a kind of low burst size of methanal and its preparation side Method.
Background technology
, it is necessary to use substantial amounts of adhesive to be used for Product processing, it is making the artificial board commercially used at present All add the urea-formaldehyde glue (UF) containing formaldehyde, melamine~glutol (MF), modified urea-formaldehyde glue and phenol glue (PF) etc. in technique, Because these glue have used aldehyde compound, the finished product being made from it can all produce volatile formaldehyde, and human body can be endangered Evil is greatly and pollution environment, the World Health Organization (WHO) confirm that formaldehyde has the harm such as murder by poisoning, carcinogenic, teratogenesis shape to people, and And these glue particularly furniture of urea-formaldehyde glue production and floor, sustainable release formaldehyde 5~15 years, meanwhile, traditional glue is in life Substantial amounts of oil product is consumed during production, reserves is also necessarily limited, therefore prior art much can not meet People are to green requirement.The artificial plywood of formaldehyde has caused the highest attention of various circles of society.
It is well known that the raw material for preparing Lauxite, urea and all suitable cheap of formaldehyde, and Lauxite The industrial chain of maturation has been formd, and the problem of traditional industries inertia is also very big, once certain production technology has been firmly believed, Think to realize that to turn to difficulty larger in a short time, other product is want to compete with Lauxite, from cost for it is just very tired Difficulty, new product and Lauxite are compared just to be higher by much in cost, such as in the prior art, melamine modified urea-formaldehyde tree Fat glue is 8400 yuan/ton, and the price of the MDI glue without formaldehyde is at 19400 yuan/ton.In addition, the very slight color of Lauxite, It is highly suitable for finishing adhesive, the mixing that the Lauxite not solidified can be relatively good with water, curing rate is fast, and Also good adhesive strength, therefore, it is short-term for, think fundamentally to shake status of the Lauxite in adhesive unusual It is difficult.
In the prior art, the formaldehyde in various methods removal furniture items has gradually been developed, has such as been inhaled using physics Attached effect, catalysis technique, chemical neutralization technology, negative aeroion technology, material sealing technique, many among these is all in furniture The method except formaldehyde is carried out during the use of product, Form aldehyde release, pollution ring still can be there are during except formaldehyde The problem of border, injury user's body, is present, therefore designs a kind of low particieboard of burst size, slows down formaldehyde in closing space and accumulates Tired speed, it is that technical staff is badly in need of the technical problem solved at this stage to avoid damaging user.
The content of the invention
For the problems of the prior art, an object of the present invention is to provide a kind of wood shavings of low burst size of methanal Plate, slow down accumulating rate of the formaldehyde in closing space.
To achieve these goals, the present invention is achieved using following technical scheme：A kind of plane of low burst size of methanal Card, including the sandwich layer that adhesive compacting forms and the top layer solid wood board for being arranged on sandwich layer both sides are mixed and stirred by wood particle, it is described Sandwich layer and top layer thickness ratio be 1：(0.06~0.125), interval is stamped with the air-vent through sandwich layer on described sandwich layer；
Described sandwich layer includes the material of following parts by weight：300~700 parts of wood particle, 1.5~6 parts of coupling agent, gluing 5~18 parts of agent, 3~8 parts of paraffin wax emulsions, 0.1~1.5 part of polyvinyl alcohol；Described wood particle is first passed through at vacuum carburization in advance Reason.
As extensive adhesive is used in the prior art, it is all that formaldehyde is in plate using formaldehyde as primary raw material to be mostly absolutely Mainly exist in material in the form of free state, reference state, three kinds of ADSORPTION STATE, in order to improve the quality of sheet material, producer often increases The viscosity of glue, and sticky actually directly proportional with the content of the formaldehyde in sheet material, the unnecessary first in sheet material of glue Aldehyde can exist in the form of free state, then slowly release, and in order to improve the rate of release of formaldehyde in sheet material, the present invention carries In the particieboard of confession, sandwich layer is provided with spaced apart air-vent, improves the gas permeability of sandwich layer, promotes the formaldehyde energy of free state Discharge faster；In the component of composition sandwich layer, wood particle first passes through vacuum carburization processing in advance, improves sheet material and is using During PARA FORMALDEHYDE PRILLS(91,95) suction-operated, slow down the rate of release of formaldehyde, meanwhile, the wood particle handled by vacuum carburization, core The overall compactness of laminate is more preferable, and intensity is more preferable.Paraffin wax emulsions in sandwich layer component can improve the waterproof ability of middle layer plate.
According to the present invention, what the thickness of described particieboard was often known for art, from 1.6mm to 75mm not Deng, and using 19mm as standard thickness, the main function of top layer solid wood board is to play a part of decoration, improves bulk strength, core Layer is mainly main structure body, and sandwich layer materials are more, and the reduction for cost is more obvious, the sandwich layer of heretofore described particieboard Thickness ratio with top layer is 1：(0.06~0.125).
According to the present invention, the purpose of air-vent is set to be the rate of release for improving wood shavings sheet metal forming later stage formaldehyde, it is ensured that The particieboard of low burst size of methanal is produced, the aperture of air-vent is too small, is unfavorable for the precipitation of formaldehyde, release；The hole of air-vent When footpath is excessive, have an impact to the intensity of overall particieboard, the aperture of the air-vent on heretofore described sandwich layer for 0.8~ 3mm。
Further, according to the present invention, the spacing of described adjacent air-vent is 5~10mm.
According to the present invention, phase slow release formaldehyde, described adhesive are heretofore described adhesive after shaping Known to those skilled in the art, it is specific such as Lauxite, phenolic resin, melamine~formaldehyde resin, polyvinyl alcohol contracting At least one of formaldehyde adhesive.
According to the present invention, the purpose of described coupling agent is to improve the interface performance between adhesive and wood particle, Adhesive property is improved, the present invention does not have special requirement for the species of coupling agent, can be known to one of ordinary skill in the art, Specific such as at least one of silane coupler, titanate coupling agent, aluminate coupling agent.
Present invention also offers a kind of preparation method of the particieboard of low burst size of methanal, comprise the following steps：
(1) stock up：It is standby including weighing sandwich layer component by wood particle vacuum carburization processing, by formula；
For described wood particle after vacuum carburization is handled, the top layer of wood particle forms the carbonization of one layer of low degree Layer, for later stage middle layer plate use during slow down formaldehyde rate of release have great importance, it is described according to the present invention The treatment temperature of vacuum carburization be 230~280 DEG C, the slightly above burning-point of wood shavings, but under vacuum conditions, wood particle is not It can burn, described vacuum is 0.009~0.35Mpa, and processing time is 40~70min.
(2) coupling agent, paraffin wax emulsions and polyvinyl alcohol, stirring are sprayed on the wood particle pretreated into step (1) Uniformly, then mix again with adhesive, obtain pre-composition；
(3) pre-composition in step (2) is applied in mould, imposes 120~600Pa pressure 8~10min of precompressed, 230~280 DEG C are then heated to, and 30~60min is suppressed under 900~1500Pa pressure, obtains middle layer plate；
According to the present invention, the thickness of described pre-composition laying is that finished product thickness is 15~20 times.
(4) middle layer plate of step (3) is stood into 1~2h, air-vent is then stamped out on middle layer plate using stamping machine, then By middle layer plate dislocation pile low-temperature bake 3~5 days into vacuum drying oven；
According to the present invention, air-vent is stamped out on the middle layer plate that sizing is completed, then middle layer plate misplaces pile, improved The speed of each middle layer plate release formaldehyde, under the subnormal ambient of vacuum, low-temperature bake further improves the release of formaldehyde Speed, discharged in this way, the formaldehyde contained in middle layer plate can volatilize as soon as possible, the temperature of described low-temperature bake is 40 ~60 DEG C, vacuum is 0.009~0.45Mpa.
(5) top layer solid wood board is bonded on the two sides of middle layer plate, produces described particieboard.
Further, according to invention, the one side of middle layer plate is first bonded top layer solid wood board, one is then scratched on middle layer plate Layer charcoal powder, charcoal powder is filled into air-vent, is then bonded the top layer solid wood board of another side again.That is, ventilative Charcoal powder is packaged with hole, the formaldehyde that described charcoal powder can discharge to the later stage absorbs, and slows down the rate of release of formaldehyde, So as to which the particieboard of low burst size of methanal be made；Wherein, described middle layer plate and top layer solid wood board are bonded with glue and sandwich layer group The adhesive divided is consistent.
Particieboard provided by the invention and preparation method thereof has the characteristics of following prominent and advantage：
1st, middle layer plate of the present invention is provided with multiple air-vents, is easy to carry out first after the sandwich layer sheet metal forming of particieboard A large amount of, the quick release of aldehyde, reduce the formaldehyde amount discharged during the use of particieboard later stage；
2nd, the wood particle for forming middle layer plate is handled by vacuum carburization, and the carburization zone that surface is formed can be in adhesive Formaldehyde adsorbed, slow down the rate of release of later stage formaldehyde；
3rd, in the preparation method of particieboard provided by the invention, the middle layer plate of shaping is subjected to punching hole processing, Ran Houjin Row cryogenic vacuum toasts, and the formaldehyde for promoting to be rich in middle layer plate quickly discharges, and reduces the particieboard later stage and uses process The formaldehyde amount of middle release.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below Specific embodiment is closed, the present invention is furture elucidated.
Embodiment 1
A kind of preparation method of the particieboard of low burst size of methanal：
(1) it is 0.01Mpa in vacuum by wood particle board raw material, temperature is carbonization treatment under conditions of 250 DEG C 60min,
(2) by the wood particle of pretreatment in the step of weighing formula ratio (1), to the wood particle on spray 4g couplings Agent, 5g paraffin wax emulsions and 1g polyvinyl alcohol, stir, and then mix again with 15g adhesives, obtain pre-composition；
(3) pre-composition in step (2) is applied in mould, the thickness of pre-composition laying is 35.8cm, imposes 300Pa Pressure precompressed 9min, then heat to 250 DEG C, and 50min is suppressed under 1000Pa pressure, obtain the thick sandwich layers of 17.9mm Plate；
(4) middle layer plate of step (3) is stood into 5h, air-vent is then stamped out on middle layer plate using stamping machine, it is described The aperture of air-vent be 2mm, the spacing of adjacent air-vent is 8mm, then middle layer plate is misplaced into pile into vacuum drying oven, in temperature Spend for 50 DEG C, vacuum be 0.2Mpa under conditions of low-temperature bake 4 days；
(5) first then the top layer solid wood board that a face coating thickness of middle layer plate is 0.55mm is scratched into wood on middle layer plate Powdered carbon, charcoal powder is filled into air-vent, the thickness for being then bonded another side again is 0.55mm top layer solid wood board, is produced total Thickness is 19mm particieboard.
Embodiment 2
A kind of preparation method of the particieboard of low burst size of methanal：
(1) it is 0.015Mpa in vacuum by wood particle board raw material, temperature is carbonization treatment under conditions of 240 DEG C 50min,
(2) by the wood particle of pretreatment in the step of weighing formula ratio (1), to the wood particle on spray 2g couplings Agent, 4g paraffin wax emulsions and 0.5g polyvinyl alcohol, stir, and then mix again with 8g adhesives, obtain pre-composition；
(3) pre-composition in step (2) is applied in mould, the thickness of pre-composition laying is 45.4cm, imposes 150Pa Pressure precompressed 8min, then heat to 240 DEG C, and 40min is suppressed under 1000Pa pressure, it is 22.7mm's to obtain thickness Middle layer plate；
(4) middle layer plate of step (3) is stood into 1h, air-vent is then stamped out on middle layer plate using stamping machine, it is described The aperture of air-vent be 1mm, the spacing of adjacent air-vent is 7mm, then middle layer plate is misplaced into pile into vacuum drying oven, in temperature Spend for 50 DEG C, vacuum be 0.02Mpa under conditions of low-temperature bake 4 days；
(5) first then the top layer solid wood board that a face coating thickness of middle layer plate is 1.15mm is scratched into wood on middle layer plate Powdered carbon, charcoal powder is filled into air-vent, is then bonded the top layer solid wood board that another face thickness is 1.15mm again, produces total thickness Spend the particieboard for 25mm.
Embodiment 3
A kind of preparation method of the particieboard of low burst size of methanal：
(1) it is 0.28Mpa in vacuum by wood particle board raw material, temperature is carbonization treatment under conditions of 270 DEG C 60min,
(2) by the wood particle of pretreatment in the step of weighing formula ratio (1), to the wood particle on spray 5g couplings Agent, 6g paraffin wax emulsions and 1.2g polyvinyl alcohol, stir, and then mix again with 16g adhesives, obtain pre-composition；
(3) pre-composition in step (2) is applied in mould, the thickness of pre-composition laying is 73.4cm, imposes 500Pa Pressure precompressed 9min, then heat to 270 DEG C, and 50min is suppressed under 1300Pa pressure, it is 36.7mm's to obtain thickness Middle layer plate；
(4) middle layer plate of step (3) is stood into 2h, air-vent is then stamped out on middle layer plate using stamping machine, it is described The aperture of air-vent be 2mm, the spacing of adjacent air-vent is 9mm, then middle layer plate is misplaced into pile into vacuum drying oven, in temperature Spend for 50 DEG C, vacuum be 0.23Mpa under conditions of low-temperature bake 4 days；
(5) first then the top layer solid wood board that a face coating thickness of middle layer plate is 1.65mm is scratched into wood on middle layer plate Powdered carbon, charcoal powder is filled into air-vent, is then bonded the top layer solid wood board that another face thickness is 1.65mm again, produces total thickness Spend the particieboard for 40mm.
Embodiment 4
A kind of preparation method of the particieboard of low burst size of methanal：
(1) it is 0.009Mpa in vacuum by wood particle board raw material, temperature is carbonization treatment under conditions of 230 DEG C 40min,
(2) by the wood particle of pretreatment in the step of weighing formula ratio (1), to the wood particle on to spray 1.5g even Join agent, 3g paraffin wax emulsions and 0.1g polyvinyl alcohol, stir, then mix again with 5g adhesives, obtain pre-composition；
(3) pre-composition in step (2) is applied in mould, the thickness of pre-composition laying is 40cm, imposes 120Pa's Pressure precompressed 10min, 230 DEG C are then heated to, and 30min is suppressed under 1500Pa pressure, it is 26.7mm's to obtain thickness Middle layer plate；
(4) middle layer plate of step (3) is stood into 1h, air-vent is then stamped out on middle layer plate using stamping machine, it is described The aperture of air-vent be 0.8mm, the spacing of adjacent air-vent is 5mm, then middle layer plate is misplaced into pile into vacuum drying oven, Low-temperature bake 3 days under conditions of temperature is 40 DEG C, vacuum is 0.009Mpa；
(5) first then the top layer solid wood board that a face coating thickness of middle layer plate is 1.65mm is scratched into wood on middle layer plate Powdered carbon, charcoal powder is filled into air-vent, is then bonded the top layer solid wood board that another face thickness is 1.65mm again, produces total thickness Spend the particieboard for 30mm.
Embodiment 5
A kind of preparation method of the particieboard of low burst size of methanal：
(1) it is 0.35Mpa in vacuum by wood particle board raw material, temperature is carbonization treatment under conditions of 280 DEG C 70min,
(2) by the wood particle of pretreatment in the step of weighing formula ratio (1), to the wood particle on spray 6g couplings Agent, 8g paraffin wax emulsions and 1.5g polyvinyl alcohol, stir, and then mix again with 18g adhesives, obtain pre-composition；
(3) pre-composition in step (2) is applied in mould, the thickness of pre-composition laying is 36.6cm, imposes 600Pa Pressure precompressed 8min, then heat to 280 DEG C, and 60min is suppressed under 900Pa pressure, it is 18.3mm's to obtain thickness Middle layer plate；
(4) middle layer plate of step (3) is stood into 2h, air-vent is then stamped out on middle layer plate using stamping machine, it is described The aperture of air-vent be 3mm, the spacing of adjacent air-vent is 10mm, then middle layer plate is misplaced into pile into vacuum drying oven, Low-temperature bake 5 days under conditions of temperature is 60 DEG C, vacuum is 0.45Mpa；
(5) first then the top layer solid wood board that a face coating thickness of middle layer plate is 0.85mm is scratched into wood on middle layer plate Powdered carbon, charcoal powder is filled into air-vent, is then bonded the top layer solid wood board that another face thickness is 0.85mm again, produced described Particieboard.
Comparative example 1
This comparative example uses preparation method same as Example 1, unlike cancel embodiment 1 in wood particle it is true Empty carbonization treatment；Other are constant.
Comparative example 2
This comparative example uses preparation method same as Example 1, the difference is that cancelling the punching press of the SMIS laminate of embodiment 1 The operation of air-vent, other are constant.
Comparative example 3
This comparative example uses preparation method same as Example 1, unlike cancel in embodiment 1 step (5) and scraping The operation of charcoal powder, namely air-vent is applied to be vacant to be present in particieboard.
Comparative example 4
This comparative example uses preparation method same as Example 2, unlike cancel embodiment 2 in wood particle it is true Empty carbonization treatment；Other are constant.
Comparative example 5
This comparative example uses preparation method same as Example 2, the difference is that cancelling the punching press of the SMIS laminate of embodiment 2 The operation of air-vent, other are constant.
Comparative example 6
This comparative example uses preparation method same as Example 2, unlike cancel in embodiment 2 step (5) and scraping The operation of charcoal powder, namely air-vent is applied to be vacant to be present in particieboard.
Burst size of methanal is tested：
2 pieces of the sample block of 300mm*150mm sizes is cut on the particieboard described in embodiment 1~5, comparative example 1~6, point Not numbering 1, No. 2, described No. 2 sample blocks are sealed up for safekeeping in same closed container 10 days, with reference to GB18580-2001《Interior decoration Form aldehyde release is limited the quantity in finishing material wood-based plate and its product》Regulation, using 40L condensed steam waters examine No. 1 sample block formaldehyde Burst size, tested the burst size of methanal of No. 2 sample blocks after 10 days with same method, and the result after test recorded into table 1 In.
The behaviour of air-vent is handled by wood particle it can be seen from data above and set on middle layer plate by vacuum carburization Make that the Form aldehyde release speed during later stage use can be reduced；Meanwhile filling charcoal powder can be effectively right in air-vent The formaldehyde separated out during use is absorbed.
General principle, principal character and the features of the present invention of the present invention has been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes Change and improvement is both fallen within the range of claimed invention.The scope of protection of present invention is by appended claims And its equivalent thereof.

Claims (10)

1. a kind of particieboard of low burst size of methanal, including adhesive is mixed and stirred by wood particle and suppresses the sandwich layer formed and is arranged on The top layer solid wood board of sandwich layer both sides, it is characterised in that：Described sandwich layer and the thickness ratio on top layer are 1：(0.06~0.125), institute Interval is stamped with the air-vent through sandwich layer on the sandwich layer stated；
Described sandwich layer includes the material of following parts by weight：300~700 parts of wood particle, 1.5~6 parts of coupling agent, adhesive 5 ~18 parts, 3~8 parts of paraffin wax emulsions, 0.1~1.5 part of polyvinyl alcohol；Described wood particle first passes through vacuum carburization processing in advance.
2. the particieboard of low burst size of methanal according to claim 1, it is characterised in that：The hole of air-vent on the sandwich layer Footpath is 0.8~3mm.
3. the particieboard of low burst size of methanal according to claim 1, it is characterised in that：The spacing of adjacent air-vent is 5 ~10mm.
4. the particieboard of low burst size of methanal according to claim 1, it is characterised in that：Described adhesive is ureaformaldehyde tree Fat, phenolic resin, melamine formaldehyde resin, formaldehyde polyvinyl acetal stick at least one of agent.
5. the particieboard of low burst size of methanal according to claim 1, it is characterised in that：Described coupling agent is that silane is even Join at least one of agent, titanate coupling agent, aluminate coupling agent.
A kind of 6. preparation method of the particieboard of low burst size of methanal as described in Claims 1 to 5, it is characterised in that：Including Following steps：
(1) stock up：It is standby including weighing sandwich layer component by wood particle vacuum carburization processing, by formula；
(2) coupling agent, paraffin wax emulsions and polyvinyl alcohol are sprayed on the wood particle pretreated into step (1), is stirred, Then mix again with adhesive, obtain pre-composition；
(3) pre-composition in step (2) is applied in mould, imposes 120~600Pa pressure 8~10min of precompressed, then 230~280 DEG C are warming up to, and 30~60min is suppressed under 900~1500Pa pressure, obtains middle layer plate；
(4) middle layer plate of step (3) is stood into 1~2h, then stamps out air-vent on middle layer plate using stamping machine, then by core Laminate dislocation pile low-temperature bake 3~5 days into vacuum drying oven；
(5) top layer solid wood board is bonded on the two sides of middle layer plate, produces described particieboard.
7. the preparation method of the particieboard of low burst size of methanal according to claim 6, it is characterised in that：In step (1) In, the technique of wood particle vacuum carburization processing is：Holding vacuum is 0.009~0.35Mpa, and temperature is 230~280 DEG C Under the conditions of 40~70min of carbonization treatment.
8. the preparation method of the particieboard of low burst size of methanal according to claim 6, it is characterised in that：In step (3) In, the thickness of pre-composition laying is that finished product thickness is 15~20 times.
9. the preparation method of the particieboard of low burst size of methanal according to claim 6, it is characterised in that：In step (4) In, the technique of middle layer plate low-temperature bake is：Middle layer plate is misplaced into pile in vacuum drying oven, temperature is 40~60 DEG C, vacuum For 0.009~0.45Mpa.
10. the preparation method of the particieboard of low burst size of methanal according to claim 6, it is characterised in that：Described step Suddenly in (5), the one side of middle layer plate is first bonded top layer solid wood board, one layer of charcoal powder is then scratched on middle layer plate, by charcoal powder It is filled into air-vent, is then bonded the top layer solid wood board of another side again.
CN201710743590.0A 2017-08-25 2017-08-25 A kind of particieboard of low burst size of methanal and preparation method thereof Pending CN107471392A (en)

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