CN106272849B - The method that Eucalyptus birch composite floor board is produced using high temperature resistant composite urea formaldehyde resin - Google Patents
The method that Eucalyptus birch composite floor board is produced using high temperature resistant composite urea formaldehyde resin Download PDFInfo
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- CN106272849B CN106272849B CN201610747076.XA CN201610747076A CN106272849B CN 106272849 B CN106272849 B CN 106272849B CN 201610747076 A CN201610747076 A CN 201610747076A CN 106272849 B CN106272849 B CN 106272849B
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- 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
- B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
- B27M3/04—Manufacture or reconditioning of specific semi-finished or finished articles of flooring elements, e.g. parqueting blocks
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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
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
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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
- B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
-
- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09J161/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic and acyclic or carbocyclic compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
Abstract
The method that the present invention produces Eucalyptus birch composite floor board using high temperature resistant composite urea formaldehyde resin, step are：Plank blade → veneer drying → gluing → is cold-pressed → stands the fixed thick sanding → base material surface layer gluing → health fluting → leaching paint dryness finalization of the hot pressing → heat dissipation health → slab of health → three times three times.The key of production method of the present invention is to use cyanurotriamide modified urea resin for adhesive major ingredient, and addition oxidized starch is sticky complexing agent；Polyvinyl alcohol is toughener；Hydrogenated rosin is antioxidant；Polyisocyanate is curing agent；Isobutyl triethoxy silane is bridging agent；Phenolate lignin is formaldehyde catching agent and adds the high temperature resistant composite urea formaldehyde resin that high temperature resistant filler is prepared again.The high temperature resistant composite urea formaldehyde resin being prepared with the method for the present invention makes it have excellent heat resistance, without apparent cracking situation under high temperature, high-strength ultraviolet irradiation or the irradiation of long-time ultraviolet light, reduces economic loss for producing Eucalyptus birch composite floor board.
Description
Technical field
The invention belongs to wood-based plate manufacturing fields, compound especially with high temperature resistant composite urea formaldehyde resin production Eucalyptus birch
The method on floor.
Background technology
With the development of China's economic, the raising of living standards of the people, the requirement to house decoration also constantly improves.Wood
Floor becomes the preferred material of family's ground surface finishing because of its naturally graceful lines, good texture.And solid wooden compound floor
The shortcomings that overcoming solid wooden floor board moisture expansion and drying shrinkage has preferable dimensional stability, while remaining the natural wood of solid wooden floor board
Line and comfortable feel, to as the important kind in floor.Solid wooden compound floor is the plank crosswise lamination by different tree species
The shortcomings that forming, overcoming the solid wooden floor board unidirectional same sex, drying shrinkage bulking factor is small.Solid wooden compound floor has both the stabilization of consolidated floor
Property and solid wooden floor board aesthetics, and there is environment-friendly advantage, and the advantages of solid wooden compound floor existing common solid wooden floor board,
The internal stress between timber is effectively had adjusted again, is improved timber and is changed and the disadvantage of deflection greatly with season humidity, because
This, is liked by consumer.
And the sandwich layer of solid wooden compound floor mostly uses eucalyptus monolithic and is pressed by adhesive.Eucalyptus is MyrtaceaeMyrtaceaeEucalyptus categoryEucalyptusThe general designation of plant, eucalyptus is adaptable, can also be grown in dead soil, and raw
Long speed is fast, and nursing cost is low, therefore cultivated area increases year by year.Eucalyptus Wood is red, it is glossy, without special odor, texture
Staggeredly, structure is close, material is firmly heavy, flexible.The larger eucalyptus of diameter grade by being peeled into veneer, as core plate produce glued board or
Laminated veneer lumber, and small diameter grade, brush wood or be difficult to the eucalyptus of rotary-cut and be processed into wood chip, for papermaking or production fiberboard, because
The comprehensive utilization ratio of this eucalyptus can be improved to 90% or more.
In recent years, the provinces such as Guangdong and Guangxi Provinces, Yunnan, Fujian, Guizhou, Hainan of south China start to introduce a fine variety by the state-owned east gate in Guangxi
The fast-growing eucalyptus kind that forest farm is cultivated, fast-growing Eucalyptus is a kind of leaf wood of light color, and wood grain is close and irregular, and sapwood layer compares
Width, in vain to pale pink；The light brown red that heartwood has.The fast-growing eucalyptus speed of growth is fast at present, can become a useful person within 3 years, hill farmer is a large amount of
Plantation, accounted for south can utilize timber 50% or more, in addition the arboreal growths such as original seeds such as pine tree, Chinese fir, margosa compared with
Slowly, it is no longer able to haggle as wildwood and cut down, and the timber yield of 1 mu of fast-growing eucalyptus is equivalent to 5 mu or more of wildwood yield,
Eucalyptus only accounts for 13 .7% of forest in Guangxi area, but solves the timber demand in 80% or more Guangxi, 20% or more the whole nation.And it is current
It is compound that China successfully develops high-performance Eucalyptus recombinant material, Eucalyptus laminated veneer lumber, bamboo eucalyptus composite material, thick core eucalyptus solid wood
Plank and without aldehyde Eucalyptus plywood making technology etc., Eucalyptus is more and more universal in the application of wood-based plate.
There is presently no the document reports that Eucalyptus birch composite floor board is produced using high temperature resistant composite urea formaldehyde resin as glue.And
Eucalyptus birch composite floor board is wood materials, encounters high temperature and often deforms, and encounters high-strength ultraviolet irradiation or long-time ultraviolet light
Irradiation is often cracked, and is made troubles to people’s lives production, and cause economic loss.
Invention content
For above-mentioned technological deficiency, given birth to using high temperature resistant composite urea formaldehyde resin the object of the present invention is to provide a kind of
The method for producing Eucalyptus birch composite floor board solves current solid wooden compound floor and meets high temperature deformation, encounter high-strength ultraviolet irradiation or
The problem of long-time ultraviolet light irradiation cracking.
The technical solution adopted by the present invention is as follows：
The key of production method of the present invention is to use cyanurotriamide modified urea resin for adhesive major ingredient, and addition oxidation is formed sediment
Powder is sticky complexing agent；Polyvinyl alcohol is toughener；Hydrogenated rosin is antioxidant；Polyisocyanate is curing agent；Isobutyl group
Triethoxysilane is bridging agent；Phenolate lignin is formaldehyde catching agent and adds the high temperature resistant that high temperature resistant filler is prepared again
Composite urea formaldehyde resin, the composite urea formaldehyde resin have residual formaldehyde amount low, the good advantage of heat resistance, using flake asbestos, mica
One kind in powder and titanium dioxide powder or combinations thereof object, as the high temperature resistant filler of the present invention, organic-inorganic high temperature resistant raw material phase
In conjunction with so that heat-resisting effect is more preferably.And in process of production, ensured by strictly controlling the technological parameter in production process
The quality of the solid wooden compound floor of production.
To achieve the purpose of the present invention, the present invention adopts the following technical scheme that：
The method for producing Eucalyptus birch composite floor board using high temperature resistant composite urea formaldehyde resin, includes the following steps：
（1）Plank blade：Eucalyptus plate is peeled into the thin slice of 1 .5-3 millimeters thicks using peeler, obtains Eucalyptus list
Plate, and choose and carry small holes caused by worms, unqualified plank rotten, defect is excessive；
（2）Veneer drying：Eucalyptus veneer is dried with hot-blast stove, the moisture content for controlling veneer is less than or equal to 10%；
（3）Gluing：Gluing is carried out and according to wood grain texture by 8-10 layers of coated glue to Eucalyptus veneer with glue spreader
The crisscross hierarchal arrangement of Eucalyptus veneer, is bonded together, and obtains Eucalyptus slab；Glue is high temperature resistant composite urea formaldehyde resin, single side
Glue-spread is 200~230g/m2；
（4）It is cold-pressed three times：By Eucalyptus slab unit pressure be the .9MPa of 0 .8~0, temperature be at room temperature, cold pressing three
It is secondary, 10~15min every time；
（5）Stand health：It will carry out the Eucalyptus slab after being cold-pressed three times and stand 6~8h of health at room temperature；
（6）Hot pressing three times：The Eucalyptus slab for standing health is hot-forming using hot press progress, it is total to hot pressing three times,
Hot pressing pressure is the .0MPa of 2 .5~3, and the temperature of first time hot pressing is 130~135 DEG C；The temperature of second of hot pressing be 125~
130 DEG C, the temperature of third time hot pressing is 135~140 DEG C, is then sent to quenched in balance library；
（7）Heat dissipation health：The Eucalyptus slab gravity-flow ventilation for carrying out three times after hot pressing is cooled to room temperature, the time is 3~
4h；
（8）The fixed thick sanding of slab：Fixed thick sanding is carried out to face, the bottom of Eucalyptus slab using contact calibrating machine, obtains substrate layer；
（9）Base material surface layer gluing：Will without die for the sake of honour, without it is rotten, without wane, that fissureless birch veneer coats high temperature resistant is compound
Lauxite is attached to substrate layer；Into hot press carry out hot pressing, hot pressing pressure be the .0MPa of 2 .5~3, hot pressing temperature be 130~
135 DEG C, hot pressing time is 10~15min, obtains floor blank；
（10）Health is slotted：Floor blank is stood into health 15-20 days in the balance health-preserving storehouse of constant temperature and humidity, is then passed through
Fluting apparatus is by the floor blank excision forming Jing Guo health；
（11）Leaching paint dryness finalization：The floor blank of slot will be ended by flow coating equipment, by eight priming paint, four finishing coats
After showering, sorting packaging obtains commercially available Eucalyptus birch composite floor board.
Step（2）Described is the step of Eucalyptus veneer is dried with hot-blast stove：Eucalyptus veneer is positioned over first
Then rail mounted multilayer wood single-plate stoving rack is positioned over a closed space by rail mounted multilayer wood single-plate stoving rack,
It is less than or equal to 10% with the moisture content that hot-blast stove is dried up to veneer.
The rail mounted multilayer wood single-plate stoving rack, including holder and limit reticulum, multiple limit reticulum stacking hinges
It is connected on holder, the upper and lower surface for limiting reticulum is fitted with limit net, and limit reticulum lower part is equipped with cushion block, and cushion block will be upper and lower
Two limit reticulums separate, and wood single-plate is placed between two limit reticulums up and down, and frame bottom is equipped with pulley.
Step（3）And step（9）The high temperature resistant composite urea formaldehyde resin adhesive, by the raw material group of following parts by weight
At：
50~100 parts of cyanurotriamide modified urea resin；
20~30 parts of oxidized starch；
1~3 part of polyvinyl alcohol；
3~8 parts of hydrogenated rosin；
2~3 parts of propanediol polyoxypropylene polyvinylether；
4~6 parts of polyisocyanate；
0.5~5 part of isobutyl triethoxy silane；
5~10 parts of phenolate lignin；
100~200 parts of clear water；
2~5 parts of high temperature resistant filler.
The high temperature resistant filler is one kind in flake asbestos, mica powder and titanium dioxide powder or combinations thereof object.
The production method of above-mentioned high temperature resistant composite urea formaldehyde resin：First the clear water of parts by weight is put into reaction kettle, is heated
To 80-100 DEG C, hydrogenated rosin, isobutyl triethoxy silane and the poly- second of propanediol polyoxypropylene of parts by weight is then added
Alkene ether stirs 10 minutes to 30 minutes, adds polyvinyl alcohol, the phenolate lignin of parts by weight, be allowed to dissolve, and adds weight
Cyanurotriamide modified urea resin, oxidized starch and the high temperature resistant filler of number are measured, is kept for 80-90 DEG C and is stirred to react 2-5 hours,
In the polyisocyanate using first 10-20 minutes addition parts by weight, it is mixed evenly and can be used.
Cyanurotriamide modified urea resin of the present invention is studied using Guangxi Nanning Green Park Beilin Wood Industry Co., Ltd.
Cyanurotriamide modified urea resin, number of patent application：CN 201310353442 .X；The applying date：2013 .08 .14；It is open
(bulletin) number：CN 103408711A；Apply for (patent right) people：Guangxi Nanning Green Park Beilin Wood Industry Co., Ltd., the melamine
The primary raw material of modified urea-formaldehyde resin is that urea is added using formaldehyde is added at one time in formaldehyde, melamine and urea several times
With the method for melamine, reaction rate is controlled, the generation of gelatin phenomenon is avoided, promotes the complete reaction of formaldehyde.Repeatedly it is added
Urea, the polymerization rate and condition of the urea and formaldehyde that are added every time are all different, can be divided into prepolymerization, polymerization and polymerization
Later stage three phases, the amount that urea is added in each stage is different, and reaction temperature is also different, by this technique, avoids
The generation of polymerization process gelatin phenomenon, the Lauxite narrow molecular weight distribution of gained, residual formaldehyde is low, artificial for producing
Plate can reduce the burst size of methanal of wood-based plate.
Above-described high temperature resistant composite urea formaldehyde resin adhesive, the function of each raw material are as follows：
Cyanurotriamide modified urea resin is adhesive major ingredient.Urea-formaldehyde resin adhesive is a kind of thermosetting polymer glue
Stick.The advantages that since its is simple for process, raw material is cheap, and adhesive strength is high, water white transparency is widely used in glued board, plane
The industries such as card, medium density fibre board (MDF), the production of artificial board and interior decoration can be bought in Market of Adhesives.Band
The melamine of shape molecule is introduced into Lauxite, is formed tridimensional network, is enclosed many hydrophilic radicals, change resin
Skeleton structure promotes resin crosslinking, to achieve the purpose that improve adhesion strength, water resistance and the ageing resistance of resin,
In turn avoid the simple higher disadvantage of melamine resin cost simultaneously.
Oxidized starch is that starch acts in acid, alkali, neutral medium with oxidant, makes a kind of change obtained from starch oxidation
Property starch.Oxidized starch product colour is pure white, pastes transparent, good film-forming property, freeze-thaw resistance is good, is the thickening of low viscosity high concentration
Agent is widely used in weaving, papermaking, food and Fine Chemical.Oxidized starch carries more aldehyde radical and carboxyl, can be multiple
During closing Lauxite polymer reaction, acetal and hemiacetal structure are generated, to improve the ageing-resistant performance of Lauxite；
Simultaneous oxidation starch can be combined with the free formaldehyde in cyanurotriamide modified urea resin, can reduce free formaldehyde content；Oxidation
On the other hand starch, and can be used as sticky complexing agent, can reduce cyanurotriamide modified urea resin addition, reduce production
Cost.
Polyvinyl alcohol is toughener so that the Eucalyptus birch composite floor board intensity produced increases.
Hydrogenated rosin is antioxidant so that the Eucalyptus birch composite floor board produced does not allow perishable, the extension longevity
Life, anti-aging.
Propanediol polyoxypropylene polyvinylether is antifoaming agent, prevents having the generation of bubble cavity during adhesive use.
Polyisocyanate is curing agent, its main feature is that there is very high wearability, and chemical property is stablized, and intensity is high,
The crosslinked action itself having can improve the performance of the heat-resisting of adhesive, water, plasticizer and solvent.
Bridging agent selects isobutyl triethoxy silane, and one end can be combined with Lauxite carbonyl, and the other end can be with
The hydroxy combining of starch enhances its plank intensity.
Lignin molecular mass after phenolate is reacted reduces, and increases reaction active groups, can eliminate part free formaldehyde.
The preparation method of phenolate lignin is：It will be placed in separation vessel using the black liquid of alkaline boiling method slurrying, removed with sieve
Undissolved suspended matter settles 4 hours after stirring, discharge lower layer silt, takes black liquor vacuum drying of the upper layer containing alkali lignin
Machine carries out vacuum spray drying processing, obtains powdery alkali lignin；It takes powdery alkali lignin to be put into acidifier, is added
70wt% sulfuric acid after stirring evenly, is warming up to 140-160 DEG C, sulfonating reaction 1-2 hours；It is evaporated by standard vertical-tubes
Device, circulation rate are 0 .4m/s-0 .5m/s, and control discharging moisture is 30wt%, precipitation, through filtering, drying to aqueous
Amount is 15wt%；By lignin：Phenol weight ratio is 1:1 is added phenol, controls 85-95 DEG C of temperature, and insulation reaction 1 is small
When, finally use 30wt% sodium hydroxides to adjust pH to 6 .5-7 .0 up to phenolate lignin.
The preparation of the oxidized starch：
（1）, select glass apparatus and assemble synthesizer：
JJ600 electronic balances；Digital display thermostat water bath；Digital display constant speed stirrer；Three-necked flask；Electric heating constant temperature forced air drying
Case；NDJ-79 Rotary Viscosimeters.
（2）Reagent chemicals：
Raw material：Tapioca（13 .8% of moisture）；
Reagent：Hydrogen peroxide（30%）, Kocide SD, copper sulphate, sodium hydrogensulfite（It is AR）.
（3）Preparation principle：
Starch is under oxidant effect, and the hydroxyl on glucose unit is oxidable at carboxyl (- COOH), it makes bonding
The stability of agent be improved significantly.Oxidation reduces the quantity of hydroxyl in starch molecule, and molecular association is made to be obstructed, from
And reduce the binding ability of intermolecular hydrogen chain.Meanwhile glucosides chain break, so that macromolecules degradation, starch molecule amount is reduced, from
And increase dissolubility, mobility and caking property.In the presence of liquid caustic soda, with hydroxy combining not oxidized in starch, portion is destroyed
Divide hydrogen bond, make declines between macromolecular, thus be easy swelling gelatinization, assigns its caking property.
Preparation process is as follows：
200g tapiocas are weighed in 1000mL three-necked flasks, water is added to be tuned into the starch milk of 18~21 ° of B é, stirring is equal
It is even, the sodium hydroxide solution of a certain amount of 5%~7% concentration is slowly added dropwise.After water-bath rises to set temperature, the sulfuric acid of 0 .01% is added
Copper.Then a certain amount of hydrogen peroxide is added, after a certain period of time, 0 .4g sodium hydrogensulfites are added in isothermal reaction, and stirring 10min is whole
Only react.After reaction, it is the .0 of 5 .5~6 with dilute hydrochloric acid neutralization reaction liquid pH value.Dehydration is filtered, washes clean is placed and dried
It is dried at 40-50 DEG C in case, crushes, sieves up to product.The above-mentioned oxidized starch used can use the reactor of large capacity to give birth to
Production.
Compared with prior art, the positive effect of the present invention is：
1, the Eucalyptus birch composite floor board content of formaldehyde produced by the method for the invention is low, has preferable gluing
Can, while having the advantages that heat resistance is good, using one kind in flake asbestos, mica powder and titanium dioxide powder or combinations thereof object,
As the high temperature resistant filler of the present invention, organic-inorganic high temperature resistant raw material is combined so that heat-resisting effect is more preferably.And it was producing
Cheng Zhong ensures the quality of the solid wooden compound floor of production by strictly controlling the technological parameter in production process.
2, in the present invention, there is simple for process, raw material as adhesive major ingredient using cyanurotriamide modified urea resin
Inexpensively, the advantages that adhesive strength height, water white transparency, and low formaldehyde gas discharges, and is a kind of environmental type resin, can be improved
The water resistance of Lauxite, and prevent glue-line from shrinking and reduce internal stress, improves ageing-resistant performance, increase glue solid content, viscosity and
Tack extends working life.And use hydrogenated rosin for antioxidant so that the Eucalyptus birch composite floor board produced is not allowed
It is perishable, extend the service life, anti-aging；Use polyvinyl alcohol for toughener so that the Eucalyptus birch composite floor board produced is strong
Degree increases；It is antifoaming agent using propanediol polyoxypropylene polyvinylether, prevents having the production of bubble cavity during adhesive use
It is raw；Use polyisocyanate for curing agent；Select isobutyl triethoxy silane as bridging agent, one end energy and Lauxite
Carbonyl combines, and the other end can enhance its plank intensity with the hydroxy combining of starch；Contain a large amount of active groups in phenolate lignin
Group, as formaldehyde catching agent, can eliminate part free formaldehyde；Using oxidized starch three can be reduced as sticky complexing agent
Poly cyanamid modified urea-formaldehyde resin addition saves cost；One kind or combinations thereof in flake asbestos, mica powder and titanium dioxide powder
Object, as the high temperature resistant filler of the present invention, organic-inorganic high temperature resistant raw material is combined so that heat-resisting effect is more preferably.
3, composite urea formaldehyde resin major ingredient of the invention is cyanurotriamide modified urea resin, and adhesion strength is big, uses simultaneously
Isobutyl triethoxy silane can be combined as bridging agent, one end with Lauxite carbonyl, and the other end can be with the hydroxyl of starch
In conjunction with crosslink density is big, and thermal deformation required temperature is high, heat-resist；Add in composite urea formaldehyde resin adhesive of the present invention simultaneously
Add one kind in flake asbestos, mica powder and titanium dioxide powder or combinations thereof object, as high temperature resistant filler, organic-inorganic high temperature resistant is former
Material is combined so that heat-resisting effect is more preferably.Therefore, the high temperature resistant composite urea formaldehyde resin being prepared with the method for the present invention is for giving birth to
Eucalyptus birch composite floor board is produced, excellent heat resistance is made it have, in high temperature, high-strength ultraviolet irradiation or long-time ultraviolet light
Irradiation is lower without apparent cracking situation, reduces economic loss.
4, the veneer drying of the method for the present invention is a spotlight, its main feature is that Eucalyptus veneer is positioned over rail mounted delta wood
Then rail mounted multilayer wood single-plate stoving rack is positioned over a closed space, is dried up with hot-blast stove by material veneer stoving rack
Moisture content to veneer is less than or equal to 10%；From in description it is found that being not apply external force in plank during Eucalyptus veneer drying
, only use hot-blast stove as heat source veneer carried out it is simply dry, exactly because and use such drying mode, solve
Current plank processing enterprise is easily deformed contraction, plank out-of-flatness and is easy to stick up using plank existing for drying machine dried single board
The problem of song cracking.
5, the rail mounted multilayer wood single-plate stoving rack that the present invention uses, including holder and limit reticulum, multiple limit nets
Seat stacking is hinged on holder, and frame bottom is equipped with pulley；The upper and lower surface of limit reticulum is fitted with limit net, limits net
Seat lower part is equipped with cushion block, and cushion block separates upper and lower two limit reticulums, wood single-plate be placed on up and down two limit reticulums it
Between, limit net only limits wood single-plate, will not squeeze wood single-plate, hot wind passes through between limit net and limit net, to wood
Material veneer is heated so that wood single-plate not will produce flexural deformation.Rail mounted multilayer wood single-plate using the present invention dries
Cost low 30 yuan or more of the cost than one cubic metre of wood single-plate of drum-type drying of dry one cubic metre of wood single-plate is quarreled, greatly
The drying cost of the wood single-plate reduced greatly.
6, in the present invention, gluing is carried out to veneer using glue spreader, ensures that glue-spread is uniform, improve gluing work effect
Rate, and by the Eucalyptus veneer of 8-10 layers of coated glue crisscross hierarchal arrangement in an orderly manner, be bonded together, thus it is possible to vary timber
The original direction of extension of fiber, when moisture expansion and drying shrinkage, each layer checked and balance, to ensure that monoblock plank kenel is stablized.Exactly this
Step, thoroughly improves the limitation of the moisture expansion and drying shrinkage of Eucalyptus birch composite floor board.
7, in the present invention, fixed thick sanding is carried out to face, the bottom of Eucalyptus slab using contact calibrating machine, it can be ensured that plate face
Flatness and finish carry to improve the precision of product for next architectural surface rare tree wood skin-overlaying for birch
For reliably ensureing.
8, in the present invention, after Eucalyptus veneer gluing using cold pressing three times, once stand health, three times hot pressing, primary dissipate
The production technology of hot health will slowly be released through internal stress larger existing for the slab inside under high temperature and pressure, be protected
Slab balance and stability is held, avoids finished product because of the case where effect of expanding with heat and contract with cold is easily deformed after being heated, and reduces finished product chance
The possibility that water, the moisture absorption play drum, deform.
9, in the present invention, because floor base material layer passes through hot pressing after sticking decoration birch veneer, inside floor blank again
Larger internal stress is produced again, so floor blank needs to stand health 15-20 days in the balance health-preserving storehouse of constant temperature and humidity, from
And ensures floor quality and more stablize.
10, in the present invention, the floor blank of slot will be ended by flow coating equipment, by the leaching of eight priming paint, four finishing coats
Tu Hou, the surface of finished product Eucalyptus birch composite floor board, which will have, moistens and rich in toughness.
Specific implementation mode
Embodiment 1
The method for producing Eucalyptus birch composite floor board using high temperature resistant composite urea formaldehyde resin, includes the following steps：
（1）Plank blade：Eucalyptus plate is peeled into the thin slice of 1 .5-3 millimeters thicks using peeler, obtains Eucalyptus list
Plate, and choose and carry small holes caused by worms, unqualified plank rotten, defect is excessive；
（2）Veneer drying：Eucalyptus veneer is dried with hot-blast stove, the moisture content for controlling veneer is less than or equal to 10%；
（3）Gluing：Gluing is carried out and according to wood grain texture by 8-10 layers of coated glue to Eucalyptus veneer with glue spreader
The crisscross hierarchal arrangement of Eucalyptus veneer, is bonded together, and obtains Eucalyptus slab；Glue is high temperature resistant composite urea formaldehyde resin, single side
Glue-spread is 200g/m2；
（4）It is cold-pressed three times：By Eucalyptus slab unit pressure be 0 .8MPa, temperature be at room temperature, cold pressing three times, every time
10~15min；
（5）Stand health：It will carry out the Eucalyptus slab after being cold-pressed three times and stand 6~8h of health at room temperature；
（6）Hot pressing three times：The Eucalyptus slab for standing health is hot-forming using hot press progress, it is total to hot pressing three times,
Hot pressing pressure is 2 .5MPa, and the temperature of first time hot pressing is 130 DEG C；The temperature of second of hot pressing is 125 DEG C, third time hot pressing
Temperature be 135 DEG C, be then sent to balance library in it is quenched；
（7）Heat dissipation health：The Eucalyptus slab gravity-flow ventilation for carrying out three times after hot pressing is cooled to room temperature, the time is 3~
4h；
（8）The fixed thick sanding of slab：Fixed thick sanding is carried out to face, the bottom of Eucalyptus slab using contact calibrating machine, obtains substrate layer；
（9）Base material surface layer gluing：Will without die for the sake of honour, without it is rotten, without wane, that fissureless birch veneer coats high temperature resistant is compound
Lauxite is attached to substrate layer；Hot pressing is carried out into hot press, hot pressing pressure is 2 .5MPa, and hot pressing temperature is 130 DEG C, hot pressing
Time is 15min, obtains floor blank；
（10）Health is slotted：Floor blank is stood into health 15-20 days in the balance health-preserving storehouse of constant temperature and humidity, is then passed through
Fluting apparatus is by the floor blank excision forming Jing Guo health；
（11）Leaching paint dryness finalization：The floor blank of slot will be ended by flow coating equipment, by eight priming paint, four finishing coats
After showering, sorting packaging obtains commercially available Eucalyptus birch composite floor board.
Step（2）Described is the step of Eucalyptus veneer is dried with hot-blast stove：Eucalyptus veneer is positioned over first
Then rail mounted multilayer wood single-plate stoving rack is positioned over a closed space by rail mounted multilayer wood single-plate stoving rack,
It is less than or equal to 10% with the moisture content that hot-blast stove is dried up to veneer.
The rail mounted multilayer wood single-plate stoving rack, including holder and limit reticulum, multiple limit reticulum stacking hinges
It is connected on holder, the upper and lower surface for limiting reticulum is fitted with limit net, and limit reticulum lower part is equipped with cushion block, and cushion block will be upper and lower
Two limit reticulums separate, and wood single-plate is placed between two limit reticulums up and down, and frame bottom is equipped with pulley.
Step（3）And step（9）The high temperature resistant composite urea formaldehyde resin, is made of the raw material of following parts by weight：
50 parts of cyanurotriamide modified urea resin；
20 parts of oxidized starch；
1 part of polyvinyl alcohol；
3 parts of hydrogenated rosin；
2 parts of propanediol polyoxypropylene polyvinylether；
4 parts of polyisocyanate；
0 .5 parts of isobutyl triethoxy silane；
5 parts of phenolate lignin；
100 parts of clear water；
1 part of flake asbestos；
1 part of mica powder.
The production method of above-mentioned high temperature resistant composite urea formaldehyde resin：First the clear water of parts by weight is put into reaction kettle, is heated
To 80 DEG C, hydrogenated rosin, isobutyl triethoxy silane and the propanediol polyoxypropylene polyvinylether of parts by weight is then added,
Stirring 30 minutes, adds polyvinyl alcohol, the phenolate lignin of parts by weight, is allowed to dissolve, adds the trimerization of parts by weight
Cyanamide modified urea-formaldehyde resin, oxidized starch, flake asbestos and mica powder are kept for 80 DEG C and are stirred to react 5 hours, are using preceding 10-20
The polyisocyanate of parts by weight is added in minute, is mixed evenly and can be used.
Embodiment 2
The method for producing Eucalyptus birch composite floor board using high temperature resistant composite urea formaldehyde resin, includes the following steps：
（1）Plank blade：Eucalyptus plate is peeled into the thin slice of 1 .5-3 millimeters thicks using peeler, obtains Eucalyptus list
Plate, and choose and carry small holes caused by worms, unqualified plank rotten, defect is excessive；
（2）Veneer drying：Eucalyptus veneer is dried with hot-blast stove, the moisture content for controlling veneer is less than or equal to 10%；
（3）Gluing：Gluing is carried out and according to wood grain texture by 8-10 layers of coated glue to Eucalyptus veneer with glue spreader
The crisscross hierarchal arrangement of Eucalyptus veneer, is bonded together, and obtains Eucalyptus slab；Glue is high temperature resistant composite urea formaldehyde resin, single side
Glue-spread is 210g/m2；
（4）It is cold-pressed three times：By Eucalyptus slab unit pressure be 0 .8MPa, temperature be at room temperature, cold pressing three times, every time
10~15min；
（5）Stand health：It will carry out the Eucalyptus slab after being cold-pressed three times and stand 6~8h of health at room temperature；
（6）Hot pressing three times：The Eucalyptus slab for standing health is hot-forming using hot press progress, it is total to hot pressing three times,
Hot pressing pressure is 2 .8MPa, and the temperature of first time hot pressing is 132 DEG C；The temperature of second of hot pressing is 128 DEG C, third time hot pressing
Temperature be 138 DEG C, be then sent to balance library in it is quenched；
（7）Heat dissipation health：The Eucalyptus slab gravity-flow ventilation for carrying out three times after hot pressing is cooled to room temperature, the time is 3~
4h；
（8）The fixed thick sanding of slab：Fixed thick sanding is carried out to face, the bottom of Eucalyptus slab using contact calibrating machine, obtains substrate layer；
（9）Base material surface layer gluing：Will without die for the sake of honour, without it is rotten, without wane, that fissureless birch veneer coats high temperature resistant is compound
Lauxite is attached to substrate layer；Hot pressing is carried out into hot press, hot pressing pressure is 2 .8MPa, and hot pressing temperature is 133 DEG C, hot pressing
Time is 10~15min, obtains floor blank；
（10）Health is slotted：Floor blank is stood into health 15-20 days in the balance health-preserving storehouse of constant temperature and humidity, is then passed through
Fluting apparatus is by the floor blank excision forming Jing Guo health；
（11）Leaching paint dryness finalization：The floor blank of slot will be ended by flow coating equipment, by eight priming paint, four finishing coats
After showering, sorting packaging obtains commercially available Eucalyptus birch composite floor board.
Step（2）Described is the step of Eucalyptus veneer is dried with hot-blast stove：Eucalyptus veneer is positioned over first
Then rail mounted multilayer wood single-plate stoving rack is positioned over a closed space by rail mounted multilayer wood single-plate stoving rack,
It is less than or equal to 10% with the moisture content that hot-blast stove is dried up to veneer.
The rail mounted multilayer wood single-plate stoving rack, including holder and limit reticulum, multiple limit reticulum stacking hinges
It is connected on holder, the upper and lower surface for limiting reticulum is fitted with limit net, and limit reticulum lower part is equipped with cushion block, and cushion block will be upper and lower
Two limit reticulums separate, and wood single-plate is placed between two limit reticulums up and down, and frame bottom is equipped with pulley.
Step（3）And step（9）The high temperature resistant composite urea formaldehyde resin, is made of the raw material of following parts by weight：
80 parts of cyanurotriamide modified urea resin；
25 parts of oxidized starch；
2 parts of polyvinyl alcohol；
5 parts of hydrogenated rosin；
2 .5 parts of propanediol polyoxypropylene polyvinylether；
5 parts of polyisocyanate；
3 parts of isobutyl triethoxy silane；
8 parts of phenolate lignin；
150 parts of clear water；
2 parts of mica powder；
2 parts of titanium dioxide powder.
The production method of above-mentioned high temperature resistant composite urea formaldehyde resin：First the clear water of parts by weight is put into reaction kettle, is heated
To 90 DEG C, hydrogenated rosin, isobutyl triethoxy silane and the propanediol polyoxypropylene polyvinylether of parts by weight is then added,
Stirring 20 minutes, adds polyvinyl alcohol, the phenolate lignin of parts by weight, is allowed to dissolve, adds the trimerization of parts by weight
Cyanamide modified urea-formaldehyde resin, oxidized starch, mica powder and titanium dioxide powder are kept for 85 DEG C and are stirred to react 3 hours, before use
The 10-20 minutes polyisocyanate that parts by weight are added, are mixed evenly and can be used.
Embodiment 3
The method for producing Eucalyptus birch composite floor board using high temperature resistant composite urea formaldehyde resin, includes the following steps：
（1）Plank blade：Eucalyptus plate is peeled into the thin slice of 1 .5-3 millimeters thicks using peeler, obtains Eucalyptus list
Plate, and choose and carry small holes caused by worms, unqualified plank rotten, defect is excessive；
（2）Veneer drying：Eucalyptus veneer is dried with hot-blast stove, the moisture content for controlling veneer is less than or equal to 10%；
（3）Gluing：Gluing is carried out and according to wood grain texture by 8-10 layers of coated glue to Eucalyptus veneer with glue spreader
The crisscross hierarchal arrangement of Eucalyptus veneer, is bonded together, and obtains Eucalyptus slab；Glue is high temperature resistant composite urea formaldehyde resin, single side
Glue-spread is 230g/ m2；
（4）It is cold-pressed three times：By Eucalyptus slab unit pressure be 0 .9MPa, temperature be at room temperature, cold pressing three times, every time
10~15min；
（5）Stand health：It will carry out the Eucalyptus slab after being cold-pressed three times and stand 6~8h of health at room temperature；
（6）Hot pressing three times：The Eucalyptus slab for standing health is hot-forming using hot press progress, it is total to hot pressing three times,
Hot pressing pressure is 3 .0MPa, and the temperature of first time hot pressing is 135 DEG C；The temperature of second of hot pressing is 130 DEG C, third time hot pressing
Temperature be 140 DEG C, be then sent to balance library in it is quenched；
（7）Heat dissipation health：The Eucalyptus slab gravity-flow ventilation for carrying out three times after hot pressing is cooled to room temperature, the time is 3~
4h；
（8）The fixed thick sanding of slab：Fixed thick sanding is carried out to face, the bottom of Eucalyptus slab using contact calibrating machine, obtains substrate layer；
（9）Base material surface layer gluing：Will without die for the sake of honour, without it is rotten, without wane, that fissureless birch veneer coats high temperature resistant is compound
Lauxite is attached to substrate layer；Hot pressing is carried out into hot press, hot pressing pressure is 3 .0MPa, and hot pressing temperature is 135 DEG C, hot pressing
Time is 10min, obtains floor blank；
（10）Health is slotted：Floor blank is stood into health 15-20 days in the balance health-preserving storehouse of constant temperature and humidity, is then passed through
Fluting apparatus is by the floor blank excision forming Jing Guo health；
（11）Leaching paint dryness finalization：The floor blank of slot will be ended by flow coating equipment, by eight priming paint, four finishing coats
After showering, sorting packaging obtains commercially available Eucalyptus birch composite floor board.
Step（2）Described is the step of Eucalyptus veneer is dried with hot-blast stove：Eucalyptus veneer is positioned over first
Then rail mounted multilayer wood single-plate stoving rack is positioned over a closed space by rail mounted multilayer wood single-plate stoving rack,
It is less than or equal to 10% with the moisture content that hot-blast stove is dried up to veneer.
The rail mounted multilayer wood single-plate stoving rack, including holder and limit reticulum, multiple limit reticulum stacking hinges
It is connected on holder, the upper and lower surface for limiting reticulum is fitted with limit net, and limit reticulum lower part is equipped with cushion block, and cushion block will be upper and lower
Two limit reticulums separate, and wood single-plate is placed between two limit reticulums up and down, and frame bottom is equipped with pulley.
Step（3）And step（9）The high temperature resistant composite urea formaldehyde resin, is made of the raw material of following parts by weight：
100 parts of cyanurotriamide modified urea resin；
30 parts of oxidized starch；
3 parts of polyvinyl alcohol；
8 parts of hydrogenated rosin；
3 parts of propanediol polyoxypropylene polyvinylether；
6 parts of polyisocyanate；
5 parts of isobutyl triethoxy silane；
10 parts of phenolate lignin；
200 parts of clear water；
5 parts of titanium dioxide powder.
The production method of above-mentioned high temperature resistant composite urea formaldehyde resin：First the clear water of parts by weight is put into reaction kettle, is heated
To 100 DEG C, hydrogenated rosin, isobutyl triethoxy silane and the propanediol polyoxypropylene polyethylene of parts by weight is then added
Ether stirs 10 minutes, adds polyvinyl alcohol, the phenolate lignin of parts by weight, be allowed to dissolve, add the three of parts by weight
Poly cyanamid modified urea-formaldehyde resin, oxidized starch and titanium dioxide powder are kept for 90 DEG C and are stirred to react 2 hours, are using preceding 10-20 points
The polyisocyanate of parts by weight is added in clock, is mixed evenly and can be used.
Comparative example 1
The method for producing Eucalyptus birch composite floor board using Lauxite, includes the following steps：
（1）Plank blade：Eucalyptus plate is peeled into the thin slice of 1 .5-3 millimeters thicks using peeler, obtains Eucalyptus list
Plate, and choose and carry small holes caused by worms, unqualified plank rotten, defect is excessive；
（2）Veneer drying：Eucalyptus veneer is dried with hot-blast stove, the moisture content for controlling veneer is less than or equal to 10%；
（3）Gluing：Gluing is carried out and according to wood grain texture by 8-10 layers of coated glue to Eucalyptus veneer with glue spreader
The crisscross hierarchal arrangement of Eucalyptus veneer, is bonded together, and obtains Eucalyptus slab；Glue is urea-formaldehyde resin adhesive（Purchased from Zibo Hua Sen
Adhesive Co., Ltd）, single spreading amount is 200g/m2；
（4）It is cold-pressed three times：By Eucalyptus slab unit pressure be 0 .8MPa, temperature be at room temperature, cold pressing three times, every time
10~15min；
（5）Stand health：It will carry out the Eucalyptus slab after being cold-pressed three times and stand 6~8h of health at room temperature；
（6）Hot pressing three times：The Eucalyptus slab for standing health is hot-forming using hot press progress, it is total to hot pressing three times,
Hot pressing pressure is 2 .5MPa, and the temperature of first time hot pressing is 130 DEG C；The temperature of second of hot pressing is 125 DEG C, third time hot pressing
Temperature be 135 DEG C, be then sent to balance library in it is quenched；
（7）Heat dissipation health：The Eucalyptus slab gravity-flow ventilation for carrying out three times after hot pressing is cooled to room temperature, the time is 3~
4h；
（8）The fixed thick sanding of slab：Fixed thick sanding is carried out to face, the bottom of Eucalyptus slab using contact calibrating machine, obtains substrate layer；
（9）Base material surface layer gluing：Will without die for the sake of honour, without it is rotten, without wane, fissureless birch veneer coat urea-formaldehyde resin adhesive
（Purchased from Zibo Hua Sen adhesives Co., Ltd）It is attached to substrate layer；Hot pressing is carried out into hot press, hot pressing pressure is 2 .5MPa,
Hot pressing temperature is 130 DEG C, and hot pressing time 15min obtains floor blank；
（10）Health is slotted：Floor blank is stood into health 15-20 days in the balance health-preserving storehouse of constant temperature and humidity, is then passed through
Fluting apparatus is by the floor blank excision forming Jing Guo health；
（11）Leaching paint dryness finalization：The floor blank of slot will be ended by flow coating equipment, by eight priming paint, four finishing coats
After showering, sorting packaging obtains commercially available Eucalyptus birch composite floor board.
Step（2）Described is the step of Eucalyptus veneer is dried with hot-blast stove：Eucalyptus veneer is positioned over first
Then rail mounted multilayer wood single-plate stoving rack is positioned over a closed space by rail mounted multilayer wood single-plate stoving rack,
It is less than or equal to 10% with the moisture content that hot-blast stove is dried up to veneer.
The rail mounted multilayer wood single-plate stoving rack, including holder and limit reticulum, multiple limit reticulum stacking hinges
It is connected on holder, the upper and lower surface for limiting reticulum is fitted with limit net, and limit reticulum lower part is equipped with cushion block, and cushion block will be upper and lower
Two limit reticulums separate, and wood single-plate is placed between two limit reticulums up and down, and frame bottom is equipped with pulley.
Comparative example 2
The method for producing Eucalyptus birch composite floor board using Lauxite, includes the following steps：
（1）Plank blade：Eucalyptus plate is peeled into the thin slice of 1 .5-3 millimeters thicks using peeler, obtains Eucalyptus list
Plate, and choose and carry small holes caused by worms, unqualified plank rotten, defect is excessive；
（2）Veneer drying：Eucalyptus veneer is dried with hot-blast stove, the moisture content for controlling veneer is less than or equal to 10%；
（3）Gluing：Gluing is carried out and according to wood grain texture by 8-10 layers of coated glue to Eucalyptus veneer with glue spreader
The crisscross hierarchal arrangement of Eucalyptus veneer, is bonded together, and obtains Eucalyptus slab；Glue is urea-formaldehyde resin adhesive（Purchased from Zibo Hua Sen
Adhesive Co., Ltd）, single spreading amount is 210g/m2；
（4）It is cold-pressed three times：By Eucalyptus slab unit pressure be 0 .8MPa, temperature be at room temperature, cold pressing three times, every time
10~15min；
（5）Stand health：It will carry out the Eucalyptus slab after being cold-pressed three times and stand 6~8h of health at room temperature；
（6）Hot pressing three times：The Eucalyptus slab for standing health is hot-forming using hot press progress, it is total to hot pressing three times,
Hot pressing pressure is 2 .8MPa, and the temperature of first time hot pressing is 132 DEG C；The temperature of second of hot pressing is 128 DEG C, third time hot pressing
Temperature be 138 DEG C, be then sent to balance library in it is quenched；
（7）Heat dissipation health：The Eucalyptus slab gravity-flow ventilation for carrying out three times after hot pressing is cooled to room temperature, the time is 3~
4h；
（8）The fixed thick sanding of slab：Fixed thick sanding is carried out to face, the bottom of Eucalyptus slab using contact calibrating machine, obtains substrate layer；
（9）Base material surface layer gluing：Will without die for the sake of honour, without it is rotten, without wane, fissureless birch veneer coat urea-formaldehyde resin adhesive
（Purchased from Zibo Hua Sen adhesives Co., Ltd）It is attached to substrate layer；Hot pressing is carried out into hot press, hot pressing pressure is 2 .8MPa,
Hot pressing temperature is 133 DEG C, and hot pressing time is 10~15min, obtains floor blank；
（10）Health is slotted：Floor blank is stood into health 15-20 days in the balance health-preserving storehouse of constant temperature and humidity, is then passed through
Fluting apparatus is by the floor blank excision forming Jing Guo health；
（11）Leaching paint dryness finalization：The floor blank of slot will be ended by flow coating equipment, by eight priming paint, four finishing coats
After showering, sorting packaging obtains commercially available Eucalyptus birch composite floor board.
Step（2）Described is the step of Eucalyptus veneer is dried with hot-blast stove：Eucalyptus veneer is positioned over first
Then rail mounted multilayer wood single-plate stoving rack is positioned over a closed space by rail mounted multilayer wood single-plate stoving rack,
It is less than or equal to 10% with the moisture content that hot-blast stove is dried up to veneer.
The rail mounted multilayer wood single-plate stoving rack, including holder and limit reticulum, multiple limit reticulum stacking hinges
It is connected on holder, the upper and lower surface for limiting reticulum is fitted with limit net, and limit reticulum lower part is equipped with cushion block, and cushion block will be upper and lower
Two limit reticulums separate, and wood single-plate is placed between two limit reticulums up and down, and frame bottom is equipped with pulley.
Comparative example 3
The method for producing Eucalyptus birch composite floor board using Lauxite, includes the following steps：
（1）Plank blade：Eucalyptus plate is peeled into the thin slice of 1 .5-3 millimeters thicks using peeler, obtains Eucalyptus list
Plate, and choose and carry small holes caused by worms, unqualified plank rotten, defect is excessive；
（2）Veneer drying：Eucalyptus veneer is dried with hot-blast stove, the moisture content for controlling veneer is less than or equal to 10%；
（3）Gluing：Gluing is carried out and according to wood grain texture by 8-10 layers of coated glue to Eucalyptus veneer with glue spreader
The crisscross hierarchal arrangement of Eucalyptus veneer, is bonded together, and obtains Eucalyptus slab；Glue is urea-formaldehyde resin adhesive（Purchased from Zibo Hua Sen
Adhesive Co., Ltd）, single spreading amount is 230g/m2；
（4）It is cold-pressed three times：By Eucalyptus slab unit pressure be 0 .9MPa, temperature be at room temperature, cold pressing three times, every time
10~15min；
（5）Stand health：It will carry out the Eucalyptus slab after being cold-pressed three times and stand 6~8h of health at room temperature；
（6）Hot pressing three times：The Eucalyptus slab for standing health is hot-forming using hot press progress, it is total to hot pressing three times,
Hot pressing pressure is 3 .0MPa, and the temperature of first time hot pressing is 135 DEG C；The temperature of second of hot pressing is 130 DEG C, third time hot pressing
Temperature be 140 DEG C, be then sent to balance library in it is quenched；
（7）Heat dissipation health：The Eucalyptus slab gravity-flow ventilation for carrying out three times after hot pressing is cooled to room temperature, the time is 3~
4h；
（8）The fixed thick sanding of slab：Fixed thick sanding is carried out to face, the bottom of Eucalyptus slab using contact calibrating machine, obtains substrate layer；
（9）Base material surface layer gluing：Will without die for the sake of honour, without it is rotten, without wane, fissureless birch veneer coat urea-formaldehyde resin adhesive
（Purchased from Zibo Hua Sen adhesives Co., Ltd）It is attached to substrate layer；Hot pressing is carried out into hot press, hot pressing pressure is 3 .0MPa,
Hot pressing temperature is 135 DEG C, and hot pressing time 10min obtains floor blank；
（10）Health is slotted：Floor blank is stood into health 15-20 days in the balance health-preserving storehouse of constant temperature and humidity, is then passed through
Fluting apparatus is by the floor blank excision forming Jing Guo health；
（11）Leaching paint dryness finalization：The floor blank of slot will be ended by flow coating equipment, by eight priming paint, four finishing coats
After showering, sorting packaging obtains commercially available Eucalyptus birch composite floor board.
Step（2）Described is the step of Eucalyptus veneer is dried with hot-blast stove：Eucalyptus veneer is positioned over first
Then rail mounted multilayer wood single-plate stoving rack is positioned over a closed space by rail mounted multilayer wood single-plate stoving rack,
It is less than or equal to 10% with the moisture content that hot-blast stove is dried up to veneer.
The rail mounted multilayer wood single-plate stoving rack, including holder and limit reticulum, multiple limit reticulum stacking hinges
It is connected on holder, the upper and lower surface for limiting reticulum is fitted with limit net, and limit reticulum lower part is equipped with cushion block, and cushion block will be upper and lower
Two limit reticulums separate, and wood single-plate is placed between two limit reticulums up and down, and frame bottom is equipped with pulley.
According to GB/T15036 .2-2001《Solid wooden floor board plate is examined and test method》To embodiment and comparative example
The burst size of methanal and bonding strength of middle products obtained therefrom are measured；The measurement for playing drum phenomenon of wood-based plate uses water-boiling method, i.e.,
It is 80cm that wood-based plate, which is cut out,（It is long）*30cm（It is wide）Specification, first boiled in 100 DEG C of water 3 hours, it is indeformable, do not crack,
It is dried again at 60-70 DEG C, record wood-based plate plays the drum time used, and the time is longer, illustrates that the quality of wood-based plate is better, normal condition
Under use, it is more difficult to drum.Under 300 DEG C of test temperatures, deformation and the cracking situation of Eucalyptus birch composite floor board are observed.Each
Three times, data are averaged product testing, and every testing result is as shown in the table：
Be in the production method of Eucalyptus birch compoiste wood floor of the present invention, during Eucalyptus veneer drying do not apply external force in
Plank, only use hot-blast stove as heat source veneer carried out it is simply dry, exactly because and use such drying mode,
It solves current plank processing enterprise and contraction, plank out-of-flatness and appearance is easily deformed using plank existing for drying machine dried single board
The problem of easy warping and cracking.And after Eucalyptus veneer gluing using cold pressing three times, once stand health, three times hot pressing, primary dissipate
The production technology of hot health will slowly be released through internal stress larger existing for the slab inside under high temperature and pressure, be protected
Slab balance and stability is held, the case where avoiding finished product the effect of expanding with heat and contract with cold is easily deformed due to heated, and reduces finished product chance
The possibility that water, the moisture absorption play drum, deform, can also improve the bonding strength of solid wooden compound floor, reduce burst size of methanal, protection
Living environment.
Find out from upper table, high temperature resistant composite urea formaldehyde resin of the invention produces Eucalyptus birch composite floor board relative to common
Urea-formaldehyde resin adhesive prepare Eucalyptus birch composite floor board have the advantages that protrusion, be mainly manifested in：The present invention have compared with
Good glue performance, while having the advantages that heat resistance is good, using in flake asbestos, mica powder and titanium dioxide powder one kind or
Its composition, as the high temperature resistant filler of the present invention, organic-inorganic high temperature resistant raw material is combined so that heat-resisting effect is more preferably.
Veneer drying Application Example
1, Nanning wood industry company, it is original to be influenced by weather using sun hanger plate is manually utilized, shine plate efficiency
It is extremely low；It is restricted to allow wood single-plate drying not receive weather, the said firm uses traditional drum-type wood single-plate drying device
Wood single-plate is dried, drum-type wood single-plate drying device is complicated, and transmission parts are more, and maintenance efficiency is high, energy consumption
Greatly, the veneer dried out is easily deformed contraction and warping and cracking；In order to overcome above-mentioned disadvantage, the said firm to use the present invention's
Veneer drying mode, simple for process, manufacturing cost is low, and the cost of dry one cubic metre of wood single-plate is than one cube of drum-type drying
Low 30 yuan of the cost or more of rice wood single-plate, the drying cost of the wood single-plate substantially reduced are not apply in drying process
External force only uses hot-blast stove to veneer simply dry as heat source in plank, exactly because and it uses such dry
Dry mode solves current plank processing enterprise and is easily deformed contraction, plank not using plank existing for drying machine dried single board
The problem of smooth and easy warping and cracking.
Claims (4)
1. using the method for high temperature resistant composite urea formaldehyde resin production Eucalyptus birch composite floor board, it is characterised in that：Including following step
Suddenly：
（1）Plank blade：Eucalyptus plate is peeled into the thin slice of 1 .5-3 millimeters thicks using peeler, obtains Eucalyptus veneer, and
Choose and carries small holes caused by worms, unqualified plank rotten, defect is excessive；
（2）Veneer drying：Eucalyptus veneer is dried with hot-blast stove, the moisture content for controlling veneer is less than or equal to 10%；
（3）Gluing：Gluing is carried out and according to wood grain texture by the Eucalyptus of 8-10 layers of coated glue to Eucalyptus veneer with glue spreader
The crisscross hierarchal arrangement of veneer, is bonded together, and obtains Eucalyptus slab；Glue is high temperature resistant composite urea formaldehyde resin, single spreading
Amount is 200~230g/m2；
（4）It is cold-pressed three times：By Eucalyptus slab unit pressure be the .9MPa of 0 .8~0, temperature be at room temperature, cold pressing three times, often
Secondary 10~15min；
（5）Stand health：It will carry out the Eucalyptus slab after being cold-pressed three times and stand 6~8h of health at room temperature；
（6）Hot pressing three times：The Eucalyptus slab for standing health is hot-forming using hot press progress, it is total to hot pressing three times, hot pressing
Pressure is the .0MPa of 2 .5~3, and the temperature of first time hot pressing is 130~135 DEG C；The temperature of second of hot pressing is 125~130
DEG C, the temperature of third time hot pressing is 135~140 DEG C, is then sent to quenched in balance library；
（7）Heat dissipation health：Eucalyptus slab gravity-flow ventilation after progress three times hot pressing is cooled to room temperature, the time is 3~4h；
（8）The fixed thick sanding of slab：Fixed thick sanding is carried out to face, the bottom of Eucalyptus slab using contact calibrating machine, obtains substrate layer；
（9）Base material surface layer gluing：Will without die for the sake of honour, without it is rotten, without wane, fissureless birch veneer coat the compound ureaformaldehyde of high temperature resistant
Resin is attached to substrate layer；Hot pressing is carried out into hot press, hot pressing pressure is the .0MPa of 2 .5~3, and hot pressing temperature is 130~135
DEG C, hot pressing time is 10~15min, obtains floor blank；
（10）Health is slotted：Floor blank is stood into health 15-20 days in the balance health-preserving storehouse of constant temperature and humidity, then passes through fluting
Equipment is by the floor blank excision forming Jing Guo health；
（11）Leaching paint dryness finalization：The floor blank of slot will be ended by flow coating equipment, by the showering of eight priming paint, four finishing coats
Afterwards, sorting packaging, obtains commercially available Eucalyptus birch composite floor board；
Step（2）Described is the step of Eucalyptus veneer is dried with hot-blast stove：Eucalyptus veneer is positioned over track first
Then rail mounted multilayer wood single-plate stoving rack is positioned over a closed space, with heat by formula multilayer wood single-plate stoving rack
Wind furnace, which is dried up to the moisture content of veneer, is less than or equal to 10%；
Step（3）And step（9）The high temperature resistant composite urea formaldehyde resin adhesive, is made of the raw material of following parts by weight：
50~100 parts of cyanurotriamide modified urea resin；
20~30 parts of oxidized starch；
1~3 part of polyvinyl alcohol；
3~8 parts of hydrogenated rosin；
2~3 parts of propanediol polyoxypropylene polyvinylether；
4~6 parts of polyisocyanate；
0.5~5 part of isobutyl triethoxy silane；
5~10 parts of phenolate lignin；
100~200 parts of clear water；
2~5 parts of high temperature resistant filler.
2. the method according to claim 1 that Eucalyptus birch composite floor board is produced using high temperature resistant composite urea formaldehyde resin,
It is characterized in that：The rail mounted multilayer wood single-plate stoving rack, including holder and limit reticulum, multiple limit reticulum stacking hinges
It is connected on holder, the upper and lower surface for limiting reticulum is fitted with limit net, and limit reticulum lower part is equipped with cushion block, and cushion block will be upper and lower
Two limit reticulums separate, and wood single-plate is placed between two limit reticulums up and down, and frame bottom is equipped with pulley.
3. the method according to claim 1 that Eucalyptus birch composite floor board is produced using high temperature resistant composite urea formaldehyde resin,
It is characterized in that：The high temperature resistant filler is one kind in flake asbestos, mica powder and titanium dioxide powder or combinations thereof object.
4. the method according to claim 1 that Eucalyptus birch composite floor board is produced using high temperature resistant composite urea formaldehyde resin,
It is characterized in that：The production method of the high temperature resistant composite urea formaldehyde resin：First the clear water of parts by weight is put into reaction kettle, is added
Heat arrives 80-100 DEG C, and the hydrogenated rosin, isobutyl triethoxy silane and propanediol polyoxypropylene that parts by weight are then added are poly-
Vinethene stirs 10 minutes to 30 minutes, adds polyvinyl alcohol, the phenolate lignin of parts by weight, be allowed to dissolve, add
Cyanurotriamide modified urea resin, oxidized starch and the high temperature resistant filler of parts by weight, it is small that 80-90 DEG C of holding is stirred to react 2-5
When, in the polyisocyanate using first 10-20 minutes addition parts by weight, it is mixed evenly and can be used.
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Denomination of invention: Method of producing Eucalyptus birch composite floor with high temperature resistant composite urea formaldehyde resin Effective date of registration: 20220630 Granted publication date: 20180904 Pledgee: Guangxi Guihui Financing Guarantee Co.,Ltd. Pledgor: GUANGXI HENGXIAN ZHENGLIN WOOD INDUSTRY CO.,LTD. Registration number: Y2022450000103 |