CN106363760B - The method that particieboard is produced using Vermins-proof mildew-proof composite urea formaldehyde resin - Google Patents
The method that particieboard is produced using Vermins-proof mildew-proof composite urea formaldehyde resin Download PDFInfo
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- CN106363760B CN106363760B CN201610746071.5A CN201610746071A CN106363760B CN 106363760 B CN106363760 B CN 106363760B CN 201610746071 A CN201610746071 A CN 201610746071A CN 106363760 B CN106363760 B CN 106363760B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/02—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
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like
-
- 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
- B27N1/02—Mixing the material with binding agent
- B27N1/0209—Methods, e.g. characterised by the composition of the agent
-
- 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
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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
Abstract
The processes such as the invention discloses the methods for producing particieboard using Vermins-proof mildew-proof composite urea formaldehyde resin, including stock up, and dry, peeling desanding, sorting polishing, tune glue mixing are hot-forming.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 Vermins-proof mildew-proof composite urea formaldehyde resin that Vermins-proof mildew-proof agent is prepared again, particieboard using the production of Vermins-proof mildew-proof composite urea formaldehyde resin has residual formaldehyde amount low, the good advantage of Vermins-proof mildew-proof effect, there is stronger inhibiting effect to the growth of aspergillus, trichoderma and mould, there is the killing of moment to knock down power and long-acting preventive effect plank powder moth.
Description
Technical field
The invention belongs to wood-based plate manufacturing fields, especially a kind of to produce particieboard using Vermins-proof mildew-proof composite urea formaldehyde resin
Method.
Background technology
Particieboard is an important board kind in wood-based plate, and compared with other plate kinds, its investment of production is relatively fewer, energy consumption
Small, at low cost, the requirement to material quality is not also high, and three surplus objects, fast growing wood, recycling waste and old wood and some non-wooden materials are all
There can be its unique advantage as the raw material of particieboard, therefore in the Chinese development particieboard industry of timber resources scarcity.Plane
To intersect the graininess of structure straggly inside card, the performance in each portion direction is essentially identical, and lateral bearing capacity is good；Surface of chipboard
Smooth, texture is true to nature, and unit weight is uniform, and thickness error is small, and anti-pollution is ageing-resistant, beautiful, can carry out various veneers；Particieboard exists
In production process, glue consumption is smaller, and environmentally friendly coefficient is relatively high.Since particieboard volume is larger, with its Hepplewhite, relatively
For other planks, also than heavier.Because particieboard have it is so many a little, therefore it is widely used in Furniture manufacture, building, packet
Dress, the interior decoration of vehicle and ship and household appliance shell making etc., facing particieboard can be also made through secondary operation.But
It is since particieboard is wooden product, if keeping ventilation not in time on rainy day, it is easy to it is deformed because of air humidity,
Even have that mouldy, the situations such as addle, causes indoor stale taste serious, and particieboard majority is glued by adhesive by Eucalyptus monolithic
It ties, bow warping can be made to deform because generating expansive force difference after long-time moisture absorption.Therefore, the insect prevention of Lauxite is improved
Fungicidal properties reduces residual formaldehyde, improves weather resistance, becomes particieboard industry development and primarily solve the problems, such as.
Patent in terms of retrieving below in relation to particieboard is produced with Lauxite：
Denomination of invention：Urea-formaldehyde resin adhesive and preparation method thereof for bagasse particieboard；Abstract：The invention discloses one
Urea-formaldehyde resin adhesive and preparation method thereof of the kind for bagasse particieboard, including the raw material of following parts by weight are made：Formaldehyde is molten
Liquid 3100-3300 parts by weight；Urea liquid 1. 1000-1200 parts by weight；Urea liquid 2. 450-550 parts by weight；Urea liquid
3. 500-600 parts by weight and modified rubber latex 90-110 parts by weight.Preparation method is：Life is not dehydrated using alkali-Acid-Base
Production. art, and the latex after silane coupler modified is added in the late phase reaction of synthesis Lauxite, further improve
The ageing-resistant performance of Lauxite.Reach 0 .1% by the urea-formaldehyde glue free formaldehyde mass fraction of the technique productions hereinafter, system
At bagasse particieboard burst size of methanal be 20mg/100g, reached 30mg/100g E2 grades of national standard below.
The adhesive that above-mentioned patent is prepared does not have Vermins-proof mildew-proof effect, urea-formaldehyde resin adhesive only will be through silane coupled
The modified latex of agent is added in the late phase reaction of synthesis Lauxite, achievees the purpose that introduce Si-O keys so that final to close
At urea-formaldehyde resin adhesive can form Si-O-Si keys during drying and forming-film, improve while top sizing is spent and increase
The mechanical strength of its big latex film, but it does not improve the Vermins-proof mildew-proof effect of urea-formaldehyde resin adhesive.
Invention content
For above-mentioned technological deficiency, produced using Vermins-proof mildew-proof composite urea formaldehyde resin the purpose of the present invention is a kind of
The method of particieboard, the particieboard content of formaldehyde produced by the method for the invention is low, and the stable quality of plate, it is not easy to
Damage, it is water-fast, Vermins-proof mildew-proof effect is good.
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 insect prevention that Vermins-proof mildew-proof agent is prepared again and prevent
Mould composite urea formaldehyde resin, the composite urea formaldehyde resin have residual formaldehyde amount low, the good advantage of Vermins-proof mildew-proof performance, Vermins-proof mildew-proof agent
In active constituent can be a variety of by that in glue scattering and permeating to veneer fibr tissue, can not only prevent from generating inside wood-based plate
Aspergillus, trichoderma and mould, and can quickly eliminate the active polypide generated due to largely using filler inside veneer and to veneer
The interior worm's ovum without hatching carries out thalline interference, makes it that can not hatch；To keep the particieboard residual formaldehyde amount that production obtains low,
Vermins-proof mildew-proof effect is good, has stronger inhibiting effect to the growth of aspergillus, trichoderma and mould, and to Chinese powder moth, Japanese powder is moth-eaten, embraces
There is flat powder moth the killing of moment to knock down power and long-acting preventive effect.And in process of production, by strictly controlling production
Technological parameter in the process ensures the quality of the particieboard of production.
To achieve the purpose of the present invention, the present invention adopts the following technical scheme that：
The method for producing particieboard using Vermins-proof mildew-proof composite urea formaldehyde resin, includes the following steps：
1）By unavailable waste material during multilayer Eucalyptus plate processed after rotary-cut Eucalyptus plate with transport after simple screening
Machine, which is sent in chipper, carries out wood shavings, then is sent to progress transition storage in wet wood shavings feed bin through transporter；The water content of wet wood shavings
Percent by weight should be maintained at 20% or less；
2）Wet wood shavings, which are sent to through transporter in roller drier, to be dried, and makes the water content percent by weight of wood shavings 10%
Below；
3）By the wood shavings after drying with isolating wood skin；Detach metal and sandstone；
4）By dry wood shavings by screening and sorting, length is in 2 centimetres of dry wood shavings of watch core layer below through transporter
It is sent to the dry wood shavings material transitional storehouse storage of watch core layer, the wood shavings more than 2 centimetres are sent to the dry wood shavings of watch core layer after smashing again
Expect transitional storehouse storage；
5）The qualified dry wood shavings of watch core layer are transported through transporter, are sent in glue mixer after the metering of chip metering feed bin, simultaneously
Adjust glue mixing workshop section that the Vermins-proof mildew-proof composite urea formaldehyde resin adhesive required by technique is sent in glue mixer, wood shavings and Vermins-proof mildew-proof
Composite urea formaldehyde resin adhesive achievees the effect that uniformly mixing is fully glued, wood shavings under being sufficiently stirred of watch core layer glue mixer
Particle accounts for the 85-90% of plank dry weight, and Vermins-proof mildew-proof composite urea formaldehyde resin adhesive and additive account for 10-15%；
6）Wood shavings after sizing are sent through belt conveyer to mechanical classification spreading machine, mat formation by mechanical classification unit of mating formation
The particle mat of uniform ground determines particle mat size specification according to hot press size；
7）Particle mat is subjected to precompressed, the pressure of precompressed is 0.8~0.9MPa, 5~8min of time；Finally carry out
Hot pressing, 2.5~3MPa of hot pressing pressure, temperature are 200~210 DEG C, and hot pressing time is every millimeter of plate thickness 80s~85s, is then sent
To quenched, obtained particieboard in balance library.
Step 5）The additive is any one of titanium dioxide, talcum powder and white carbon.
Step 5）The Vermins-proof mildew-proof 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；
2.1~4.9 parts of Vermins-proof mildew-proof agent.
The Vermins-proof mildew-proof agent be active powdered carbon, bamboo charcoal powder, garlic powder and chilli powder mixture, weight ratio according to
Secondary is 2:3:1:1.
Active powdered carbon, bamboo charcoal powder, garlic powder and the chilli powder crosses 300 mesh sieve.The ratio of active powdered carbon and bamboo charcoal powder
Surface area is big, has superpower dampproof effect, and to absorb the moisture in air, avoiding timber main body from having, mouldy, the situations such as addle.
Main component allicin in garlic has sterilization, desinsection, removing toxic substances, anti-corrosion and other effects；And the main component capsaicine in capsicum
Apparent to the action of contace poison of pest, i.e. performance paralysis (inactive, not feeding), paralysis is final dead after pest contacts with capsaicine
The phenomenon that dying.Active powdered carbon, bamboo charcoal powder, garlic powder and chilli powder are added to composite urea formaldehyde resin of the present invention as Vermins-proof mildew-proof agent
In adhesive, vermins-proof effect is lasting, does not influence the bonding strength of adhesive, is uniformly dispersed in adhesive, can be with glue to wood
Material internal penetration makes product reach the function of long-acting insect prevention, it is often more important that, the safe and efficient low toxicity of these types of substance has
Certain antiseptic property.
The production method of above-mentioned Vermins-proof mildew-proof 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 Vermins-proof mildew-proof agent 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.
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 (public
Accuse) number：CN 103408711A；Apply for (patent right) people：Guangxi Nanning Green Park Beilin Wood Industry Co., Ltd., the melamine change
Property Lauxite primary raw material be formaldehyde, melamine and urea, using formaldehyde is added at one time, several times be added urea and
The method of melamine controls reaction rate, avoids the generation of gelatin phenomenon, promote the complete reaction of formaldehyde.Urine is repeatedly added
Element, the polymerization rate and condition of the urea and formaldehyde that are added every time are all different, after can be divided into prepolymerization, polymerization and polymerization
Phase 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 Vermins-proof mildew-proof 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 strength of shaving boards produced increases.
Hydrogenated rosin is antioxidant so that the particieboard produced does not allow perishable, extension service 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 0.4m/s-0.5m/s, control discharging moisture are 30wt%, precipitation, through filtering, drying to water content
For 15wt%；By lignin：Phenol weight ratio is 1:1 addition phenol, 85-95 DEG C of temperature of control, insulation reaction 1 hour,
30wt% sodium hydroxides are finally used to adjust pH to 6.5-7.0 up to phenolate lignin.
Garlic,【Classification system】Allium sativum L.,【Alias】Garlic, garlic, only garlic, giant garlic.【Function cures mainly】
Detoxify desinsection, swelling and pain relieving, and antidiarrheal stop dysentery controls lung, and expelling parasite, in addition there are warm spleen warm stomaches.Control swollen ulcer drug, white bald tinea sore, dysentery
Disease diarrhea, tuberculosis pertussis, roundworm pinworm, eating accumulation, coldness and pain in the epigastrium, oedema turgor.Completely there is one kind into the cell in garlic
Colourless, odorless and water-soluble spice precursor alliin contacts after cell damage with a kind of allinnase, is transformed into sulfur-bearing
Product allicin.Allicin has strong antibacterial and anti-inflammation functions, has suppression to a variety of coccuses, bacillus, fungi and virus etc.
System and killing effect, are strongest one kind of antibacterial action in the natural plants currently found.In addition, allicin is in cultivation aquaculture
In have been developed that utilization, allicin can be used as fungicide, agrochemical in feed.Allicin has sterilization, desinsection, removing toxic substances, prevents
Corruption and other effects.
Capsicum,【Classification system】Capsicum annuum,【Also known as】Spicy, caynne pepper, long red pepper, Red sea green pepper, capsicum annum fasciculatum；
Capsaicine be in pepper fruit mainly be in peppery substance, it is a kind of vanilla amide alkaloid that extreme is pungent, chemistry knot
Structure is entitled：[(4- hydroxy 3-methoxybenzenes base)-methyl] -8- methyl-(anti-) -6- nonenamides.Capsaicine is to waxy brood cell
Bacillus and hay bacillus significantly inhibit effect, but invalid to staphylococcus aureus and Escherichia coli.Its branch, leaf have no antibacterial
Effect, only has tubercle bacillus very slight inhibition.10-20% capsicums, which decoct chaste tree, the effect of killing bedbug.Capsaicine is to pest
Action of contace poison is apparent, and pest shows paralysis (inactive, not feeding), paralyses final dead show after being contacted with capsaicine
As；It also has stomach poison function to pest, after pests, then inhibits Chlorogenic Acid, and influence digests and assimilates, interfere and breathes generation
It thanks, pest is caused to be led to physiology lesion because normal physiological activity is obstructed, so that growth and development is suppressed and dead.
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（Moisture 13.8%）；
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, 0.01% sulfuric acid 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 terminated
Reaction.After reaction, it is 5.5~6.0 with dilute hydrochloric acid neutralization reaction liquid pH value.Dehydration is filtered, washes clean is placed in baking oven
It is dried at 40-50 DEG C, crushes, sieves up to product.The above-mentioned oxidized starch used can use the reactor of large capacity to produce.
Compared with prior art, the positive effect of the present invention is：
1, unavailable waste material during the present invention is using multilayer Eucalyptus plate processed after rotary-cut Eucalyptus plate --- i.e. Eucalyptus
Leftover pieces hot pressing produces particieboard, and since Eucalyptus is a kind of fast growing wood, plate is peeled into after felling, again will with adhesive after dry
Plate is bonded into this multi-layer board and is also referred to as solid wood board, can be used as good office appliance, timber floor, furniture and building-supporting plate
Multiple use, but multiple-plate production process generates largely either in cut-out, rotary-cut or adhesion process, can all generate many
Particle, these multi-layer board factories, particle can only be used as fuel to burn up, cause the great wasting of resources, and the present invention is by corner
Material uses, and is a kind of direction for making full use of resource, saving timber.
2, the particieboard content of formaldehyde produced by the method for the invention is low, has preferable glue performance, while high
Quality stability is good under temperature, high humidity environment, meets water, making moist has been not easy drum, deformation.
3, it is Vermins-proof mildew-proof composite urea formaldehyde resin that the key of production method of the present invention, which is adhesive therein, is using use
Cyanurotriamide modified urea resin has simple for process as adhesive major ingredient, and raw material is cheap, and adhesive strength is high, water white transparency
The advantages that, and low formaldehyde gas discharges, and is a kind of environmental type resin, the water resistance of Lauxite can be improved（To increase
Add the waterproof and dampproof performance of particieboard）, and prevent glue-line from shrinking and reduce internal stress, raising ageing-resistant performance, increase glue solid content,
Viscosity and tack extend working life.And use hydrogenated rosin for antioxidant so that the particieboard produced does not allow mutability
Matter extends the service life, anti-aging；Use polyvinyl alcohol for toughener so that the strength of shaving boards produced increases；Using the third two
Alcohol polyoxypropylene polyvinylether is antifoaming agent, prevents having the generation of bubble cavity during adhesive use；Using polyisocyanate
For curing agent；Select isobutyl triethoxy silane as bridging agent, one end can be combined with Lauxite carbonyl, other end energy
With the hydroxy combining of starch, enhance its plank intensity；Contain a large amount of active groups in phenolate lignin, as formaldehyde catching agent,
Part free formaldehyde can be eliminated；Cyanurotriamide modified urea resin can be reduced as sticky complexing agent using oxidized starch
Addition saves cost；Active powdered carbon, bamboo charcoal powder, garlic powder and chilli powder are added to of the invention compound as Vermins-proof mildew-proof agent
In urea-formaldehyde resin adhesive, vermins-proof effect is lasting, does not influence the bonding strength of adhesive, is uniformly dispersed in adhesive, can be with
Glue is permeated to wood internal, and product is made to reach the function of long-acting insect prevention.
4, in Vermins-proof mildew-proof composite urea formaldehyde resin adhesive of the present invention, active powdered carbon and bamboo charcoal powder are fine and closely woven porous, have
Superpower moisture protection can absorb the moisture in air, and timber main body is avoided to have phenomena such as mouldy, to addle；Also have decomposition different
Taste is except the beautiful function of sterilizing, as can absorbing the pernicious gases such as formaldehyde, benzene, dimethylbenzene, hydrogen in timber product.It is main in garlic
Ingredient allicin has sterilization, desinsection, removing toxic substances, anti-corrosion and other effects；And the main component capsaicine in capsicum tags to pest
Effect is apparent, and pest shows paralysis (inactive, not feeding), the final dead phenomenon of paralysis after being contacted with capsaicine.It is living
Property powdered carbon, bamboo charcoal powder, garlic powder and chilli powder be added in composite urea formaldehyde resin adhesive of the present invention as Vermins-proof mildew-proof agent, prevent
Worm effect is lasting, does not influence the bonding strength of adhesive, is uniformly dispersed in adhesive, can be permeated to wood internal with glue,
Product is set to reach the function of long-acting insect prevention, it is often more important that, the safe and efficient low toxicity of these types of substance has certain anti-corrosive properties
Energy.
5, in Vermins-proof mildew-proof composite urea formaldehyde resin adhesive of the present invention, the active constituent in Vermins-proof mildew-proof agent can pass through glue
In liquid scattering and permeating to veneer fibr tissue, a variety of aspergillus, trichoderma and the mould that are generated inside wood-based plate can not only be prevented, and
Can quickly eliminate inside veneer because largely using filler due to the active polypide that generates and the worm's ovum without hatching in veneer is carried out
Thalline interferes, and makes it that can not hatch.The present invention the strong osmosis type of Vermins-proof mildew-proof agent category interior suction, to the aspergillus of wood-based plate, trichoderma and
The growth of mould has stronger inhibiting effect, and to Chinese powder moth, Japanese powder is moth-eaten, embrace flat powder moth have the killing of moment knock down power and
Long-acting preventive effect.
Specific implementation mode
Embodiment 1
The method for producing particieboard using Vermins-proof mildew-proof composite urea formaldehyde resin, includes the following steps：
1）By unavailable waste material during multilayer Eucalyptus plate processed after rotary-cut Eucalyptus plate with transport after simple screening
Machine, which is sent in chipper, carries out wood shavings, then is sent to progress transition storage in wet wood shavings feed bin through transporter；The water content of wet wood shavings
Percent by weight should be maintained at 20% or less；
2）Wet wood shavings, which are sent to through transporter in roller drier, to be dried, and makes the water content percent by weight of wood shavings 10%
Below；
3）By the wood shavings after drying with isolating wood skin；Detach metal and sandstone；
4）By dry wood shavings by screening and sorting, length is in 2 centimetres of dry wood shavings of watch core layer below through transporter
It is sent to the dry wood shavings material transitional storehouse storage of watch core layer, the wood shavings more than 2 centimetres are sent to the dry wood shavings of watch core layer after smashing again
Expect transitional storehouse storage；
5）The qualified dry wood shavings of watch core layer are transported through transporter, are sent in glue mixer after the metering of chip metering feed bin, simultaneously
Adjust glue mixing workshop section that the Vermins-proof mildew-proof composite urea formaldehyde resin adhesive required by technique is sent in glue mixer, wood shavings and Vermins-proof mildew-proof
Composite urea formaldehyde resin adhesive achievees the effect that uniformly mixing is fully glued, wood shavings under being sufficiently stirred of watch core layer glue mixer
Particle accounts for the 85-90% of plank dry weight, and Vermins-proof mildew-proof composite urea formaldehyde resin adhesive and additive account for 10-15%；
6）Wood shavings after sizing are sent through belt conveyer to mechanical classification spreading machine, mat formation by mechanical classification unit of mating formation
The particle mat of uniform ground determines particle mat size specification according to hot press size；
7）Particle mat is subjected to precompressed, the pressure of precompressed is 0.8MPa, time 8min；Hot pressing is finally carried out, heat
Pressure pressure 2.5MPa, temperature be 210 DEG C, hot pressing time be every millimeter of plate thickness 80s~85s, then send to balance library in it is quenched,
Particieboard is made.
Step 5）The additive is titanium dioxide.
Step 5）The Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, 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 part of isobutyl triethoxy silane；
5 parts of phenolate lignin；
100 parts of clear water；
2.1 parts of Vermins-proof mildew-proof agent.
The Vermins-proof mildew-proof agent be active powdered carbon, bamboo charcoal powder, garlic powder and chilli powder mixture, weight ratio according to
Secondary is 2:3:1:1, wherein 0.6 parts by weight of active powdered carbon, 0.9 parts by weight of bamboo charcoal powder, garlic powder and chilli powder are 0.3 weight
Part.Active powdered carbon, bamboo charcoal powder, garlic powder and the chilli powder crosses 300 mesh sieve.
The production method of above-mentioned Vermins-proof mildew-proof composite urea formaldehyde resin：First the clear water of parts by weight is put into reaction kettle, is added
Then hydrogenated rosin, isobutyl triethoxy silane and the propanediol polyoxypropylene polyethylene of parts by weight is added to 80 DEG C in heat
Ether stirs 30 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, active powdered carbon, bamboo charcoal powder, garlic powder and chilli powder, are kept for 80 DEG C and are stirred to react 5
Hour, in the polyisocyanate that parts by weight were added using first 20 minutes, it is mixed evenly and can be used.
Embodiment 2
The method for producing particieboard using Vermins-proof mildew-proof composite urea formaldehyde resin, includes the following steps：
1）By unavailable waste material during multilayer Eucalyptus plate processed after rotary-cut Eucalyptus plate with transport after simple screening
Machine, which is sent in chipper, carries out wood shavings, then is sent to progress transition storage in wet wood shavings feed bin through transporter；The water content of wet wood shavings
Percent by weight should be maintained at 20% or less；
2）Wet wood shavings, which are sent to through transporter in roller drier, to be dried, and makes the water content percent by weight of wood shavings 10%
Below；
3）By the wood shavings after drying with isolating wood skin；Detach metal and sandstone；
4）By dry wood shavings by screening and sorting, length is in 2 centimetres of dry wood shavings of watch core layer below through transporter
It is sent to the dry wood shavings material transitional storehouse storage of watch core layer, the wood shavings more than 2 centimetres are sent to the dry wood shavings of watch core layer after smashing again
Expect transitional storehouse storage；
5）The qualified dry wood shavings of watch core layer are transported through transporter, are sent in glue mixer after the metering of chip metering feed bin, simultaneously
Adjust glue mixing workshop section that the Vermins-proof mildew-proof composite urea formaldehyde resin adhesive required by technique is sent in glue mixer, wood shavings and Vermins-proof mildew-proof
Composite urea formaldehyde resin adhesive achievees the effect that uniformly mixing is fully glued, wood shavings under being sufficiently stirred of watch core layer glue mixer
Particle accounts for the 85-90% of plank dry weight, and Vermins-proof mildew-proof composite urea formaldehyde resin adhesive and additive account for 10-15%；
6）Wood shavings after sizing are sent through belt conveyer to mechanical classification spreading machine, mat formation by mechanical classification unit of mating formation
The particle mat of uniform ground determines particle mat size specification according to hot press size；
7）Particle mat is subjected to precompressed, the pressure of precompressed is 0.8MPa, time 8min；Finally carry out hot pressing, hot pressing
Pressure 2.8MPa, temperature are 205 DEG C, and hot pressing time is every millimeter of plate thickness 80s~85s, then send, system quenched into balance library
Obtain particieboard.
Step 5）The additive is talcum powder.
Step 5）The Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, 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；
6 parts of hydrogenated rosin；
2.5 parts of propanediol polyoxypropylene polyvinylether；
5 parts of polyisocyanate；
3 parts of isobutyl triethoxy silane；
7 parts of phenolate lignin；
150 parts of clear water；
3.5 parts of Vermins-proof mildew-proof agent.
The Vermins-proof mildew-proof agent be active powdered carbon, bamboo charcoal powder, garlic powder and chilli powder mixture, weight ratio according to
Secondary is 2:3:1:1, wherein active 1 part of powdered carbon, 1.5 parts of bamboo charcoal powder, garlic powder and chilli powder are 0.5 part.The activated carbon
Powder, bamboo charcoal powder, garlic powder and chilli powder cross 300 mesh sieve.
The production method of above-mentioned Vermins-proof mildew-proof composite urea formaldehyde resin：First the clear water of parts by weight is put into reaction kettle, is added
Then hydrogenated rosin, isobutyl triethoxy silane and the propanediol polyoxypropylene polyethylene of parts by weight is added to 90 DEG C in heat
Ether stirs 20 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, active powdered carbon, bamboo charcoal powder, garlic powder and chilli powder, are kept for 85 DEG C and are stirred to react 4
Hour, in the polyisocyanate that parts by weight were added using first 15 minutes, it is mixed evenly and can be used.
Embodiment 3
The method for producing particieboard using Vermins-proof mildew-proof composite urea formaldehyde resin, includes the following steps：
1）By unavailable waste material during multilayer Eucalyptus plate processed after rotary-cut Eucalyptus plate with transport after simple screening
Machine, which is sent in chipper, carries out wood shavings, then is sent to progress transition storage in wet wood shavings feed bin through transporter；The water content of wet wood shavings
Percent by weight should be maintained at 20% or less；
2）Wet wood shavings, which are sent to through transporter in roller drier, to be dried, and makes the water content percent by weight of wood shavings 10%
Below；
3）By the wood shavings after drying with isolating wood skin；Detach metal and sandstone；
4）By dry wood shavings by screening and sorting, length is in 2 centimetres of dry wood shavings of watch core layer below through transporter
It is sent to the dry wood shavings material transitional storehouse storage of watch core layer, the wood shavings more than 2 centimetres are sent to the dry wood shavings of watch core layer after smashing again
Expect transitional storehouse storage；
5）The qualified dry wood shavings of watch core layer are transported through transporter, are sent in glue mixer after the metering of chip metering feed bin, simultaneously
Adjust glue mixing workshop section that the Vermins-proof mildew-proof composite urea formaldehyde resin adhesive required by technique is sent in glue mixer, wood shavings and Vermins-proof mildew-proof
Composite urea formaldehyde resin adhesive achievees the effect that uniformly mixing is fully glued, wood shavings under being sufficiently stirred of watch core layer glue mixer
Particle accounts for the 85-90% of plank dry weight, and Vermins-proof mildew-proof composite urea formaldehyde resin adhesive and additive account for 10-15%；
6）Wood shavings after sizing are sent through belt conveyer to mechanical classification spreading machine, mat formation by mechanical classification unit of mating formation
The particle mat of uniform ground determines particle mat size specification according to hot press size；
7）Particle mat is subjected to precompressed, the pressure of precompressed is 0.9MPa, time 5min；Hot pressing is finally carried out, heat
Pressure pressure 3MPa, temperature are 200 DEG C, and hot pressing time is every millimeter of plate thickness 80s~85s, then send, system quenched into balance library
Obtain particieboard.
Step 5）The additive is white carbon.
Step 5）The Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, 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；
4.9 parts of Vermins-proof mildew-proof agent.
The Vermins-proof mildew-proof agent be active powdered carbon, bamboo charcoal powder, garlic powder and chilli powder mixture, weight ratio according to
Secondary is 2:3:1:1, wherein 1.4 parts by weight of active powdered carbon, 2.1 parts by weight of bamboo charcoal powder, garlic powder and chilli powder are 0.7 weight
Part.Active powdered carbon, bamboo charcoal powder, garlic powder and the chilli powder crosses 300 mesh sieve.
The production method of above-mentioned Vermins-proof mildew-proof composite urea formaldehyde resin：First the clear water of parts by weight is put into reaction kettle, is added
Then hydrogenated rosin, isobutyl triethoxy silane and the propanediol polyoxypropylene polyethylene of parts by weight is added to 100 DEG C in heat
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, active powdered carbon, bamboo charcoal powder, garlic powder and chilli powder, are kept for 90 DEG C and are stirred to react 2
Hour, in the polyisocyanate using first 10-20 minutes addition parts by weight, it is mixed evenly and can be used.
Comparative example 1
The method for producing particieboard using composite urea formaldehyde resin, includes the following steps：
1）By unavailable waste material during multilayer Eucalyptus plate processed after rotary-cut Eucalyptus plate with transport after simple screening
Machine, which is sent in chipper, carries out wood shavings, then is sent to progress transition storage in wet wood shavings feed bin through transporter；The water content of wet wood shavings
Percent by weight should be maintained at 20% or less；
2）Wet wood shavings, which are sent to through transporter in roller drier, to be dried, and makes the water content percent by weight of wood shavings 10%
Below；
3）By the wood shavings after drying with isolating wood skin；Detach metal and sandstone；
4）By dry wood shavings by screening and sorting, length is in 2 centimetres of dry wood shavings of watch core layer below through transporter
It is sent to the dry wood shavings material transitional storehouse storage of watch core layer, the wood shavings more than 2 centimetres are sent to the dry wood shavings of watch core layer after smashing again
Expect transitional storehouse storage；
5）The qualified dry wood shavings of watch core layer are transported through transporter, are sent in glue mixer after the metering of chip metering feed bin, simultaneously
Adjust glue mixing workshop section by the adhesive required by technique（For urea-formaldehyde resin adhesive, it is purchased from Zibo Hua Sen adhesives Co., Ltd）It send
Into glue mixer, wood shavings and adhesive（For urea-formaldehyde resin adhesive, it is purchased from Zibo Hua Sen adhesives Co., Ltd）In watch core layer
Under being sufficiently stirred of glue mixer, achieve the effect that uniformly mixing is fully glued, wood shavings particle accounts for the 85-90% of plank dry weight, gluing
Agent（For urea-formaldehyde resin adhesive, it is purchased from Zibo Hua Sen adhesives Co., Ltd）10-15% is accounted for additive；
6）Wood shavings after sizing are sent through belt conveyer to mechanical classification spreading machine, mat formation by mechanical classification unit of mating formation
The particle mat of uniform ground determines particle mat size specification according to hot press size；
7）Particle mat is subjected to precompressed, the pressure of precompressed is 0.8MPa, time 8min；Hot pressing is finally carried out, heat
Pressure pressure 2.5MPa, temperature be 210 DEG C, hot pressing time be every millimeter of plate thickness 80s~85s, then send to balance library in it is quenched,
Particieboard is made.
Step 5）The additive is titanium dioxide.
Comparative example 2
The method for producing particieboard using composite urea formaldehyde resin, includes the following steps：
1）By unavailable waste material during multilayer Eucalyptus plate processed after rotary-cut Eucalyptus plate with transport after simple screening
Machine, which is sent in chipper, carries out wood shavings, then is sent to progress transition storage in wet wood shavings feed bin through transporter；The water content of wet wood shavings
Percent by weight should be maintained at 20% or less；
2）Wet wood shavings, which are sent to through transporter in roller drier, to be dried, and makes the water content percent by weight of wood shavings 10%
Below；
3）By the wood shavings after drying with isolating wood skin；Detach metal and sandstone；
4）By dry wood shavings by screening and sorting, length is in 2 centimetres of dry wood shavings of watch core layer below through transporter
It is sent to the dry wood shavings material transitional storehouse storage of watch core layer, the wood shavings more than 2 centimetres are sent to the dry wood shavings of watch core layer after smashing again
Expect transitional storehouse storage；
5）The qualified dry wood shavings of watch core layer are transported through transporter, are sent in glue mixer after the metering of chip metering feed bin, simultaneously
Adjust glue mixing workshop section by the adhesive required by technique（For urea-formaldehyde resin adhesive, it is purchased from Zibo Hua Sen adhesives Co., Ltd）It send
Into glue mixer, wood shavings and adhesive（For urea-formaldehyde resin adhesive, it is purchased from Zibo Hua Sen adhesives Co., Ltd）In watch core layer
Under being sufficiently stirred of glue mixer, achieve the effect that uniformly mixing is fully glued, wood shavings particle accounts for the 85-90% of plank dry weight, gluing
Agent（For urea-formaldehyde resin adhesive, it is purchased from Zibo Hua Sen adhesives Co., Ltd）10-15% is accounted for additive；
6）Wood shavings after sizing are sent through belt conveyer to mechanical classification spreading machine, mat formation by mechanical classification unit of mating formation
The particle mat of uniform ground determines particle mat size specification according to hot press size；
7）Particle mat is subjected to precompressed, the pressure of precompressed is 0.8MPa, time 8min；Finally carry out hot pressing, hot pressing
Pressure 2.8MPa, temperature are 205 DEG C, and hot pressing time is every millimeter of plate thickness 80s~85s, then send, system quenched into balance library
Obtain particieboard.
Step 5）The additive is talcum powder.
Comparative example 3
The method for producing particieboard using composite urea formaldehyde resin, includes the following steps：
1）By unavailable waste material during multilayer Eucalyptus plate processed after rotary-cut Eucalyptus plate with transport after simple screening
Machine, which is sent in chipper, carries out wood shavings, then is sent to progress transition storage in wet wood shavings feed bin through transporter；The water content of wet wood shavings
Percent by weight should be maintained at 20% or less；
2）Wet wood shavings, which are sent to through transporter in roller drier, to be dried, and makes the water content percent by weight of wood shavings 10%
Below；
3）By the wood shavings after drying with isolating wood skin；Detach metal and sandstone；
4）By dry wood shavings by screening and sorting, length is in 2 centimetres of dry wood shavings of watch core layer below through transporter
It is sent to the dry wood shavings material transitional storehouse storage of watch core layer, the wood shavings more than 2 centimetres are sent to the dry wood shavings of watch core layer after smashing again
Expect transitional storehouse storage；
5）The qualified dry wood shavings of watch core layer are transported through transporter, are sent in glue mixer after the metering of chip metering feed bin, simultaneously
Adjust glue mixing workshop section by the adhesive required by technique（For urea-formaldehyde resin adhesive, it is purchased from Zibo Hua Sen adhesives Co., Ltd）It send
Into glue mixer, wood shavings and adhesive（For urea-formaldehyde resin adhesive, it is purchased from Zibo Hua Sen adhesives Co., Ltd）In watch core layer
Under being sufficiently stirred of glue mixer, achieve the effect that uniformly mixing is fully glued, wood shavings particle accounts for the 85-90% of plank dry weight, gluing
Agent（For urea-formaldehyde resin adhesive, it is purchased from Zibo Hua Sen adhesives Co., Ltd）10-15% is accounted for additive；
6）Wood shavings after sizing are sent through belt conveyer to mechanical classification spreading machine, mat formation by mechanical classification unit of mating formation
The particle mat of uniform ground determines particle mat size specification according to hot press size；
7）Particle mat is subjected to precompressed, the pressure of precompressed is 0.9MPa, time 5min；Hot pressing is finally carried out, heat
Pressure pressure 3MPa, temperature are 200 DEG C, and hot pressing time is every millimeter of plate thickness 80s~85s, then send, system quenched into balance library
Obtain particieboard.
Step 5）The additive is white carbon.
According to GB/T15036.2-2001《Solid wooden floor board plate is examined and test method》To in embodiment and comparative example
The burst size of methanal and bonding strength of products obtained therefrom are measured.Temperature be 15 DEG C, relative humidity >=85% in the environment of, note
Its mouldy time is recorded and the index that goes mouldy, in addition, taking the identical sample sizes of size to be put into culture respectively particieboard obtained
In the culture dish for having identical quantity termite, culture detects the survival number of termite in culture dish and calculates the dead of termite after 24 hours
Die rate.Three times, data are averaged each product testing, and every testing result is as shown in the table：
Find out from upper table, during method production particieboard through the invention, it can be seen from the table, of the invention is anti-
The mould proof composite urea formaldehyde resin production particieboard of worm has the advantages that protrusion relative to particieboard prepared by urea-formaldehyde resin adhesive, main
It shows：The present invention has preferable glue performance and lower burst size of methanal, while having Vermins-proof mildew-proof effect good
Advantage has stronger inhibiting effect to the growth of aspergillus, trichoderma and mould, to plank powder moth have moment killing knock down power and
Long-acting preventive effect has preferable application and popularization value.
Claims (3)
1. using the method for Vermins-proof mildew-proof composite urea formaldehyde resin production particieboard, it is characterised in that：Steps are as follows：
1）Unavailable waste material during rotary-cut Eucalyptus plate multilayer Eucalyptus plate is sent to after simple screening with transporter
Wood shavings are carried out in chipper, then are sent to progress transition storage in wet wood shavings feed bin through transporter；The water content percentage weight of wet wood shavings
Amount should be maintained at 20% or less；
2）Wet wood shavings, which are sent to through transporter in roller drier, to be dried, and makes the water content percent by weight of wood shavings below 10%；
3）Wood shavings after drying are isolated into wood skin；Detach metal and sandstone；
4）By dry wood shavings by screening and sorting, length is sent in 2 centimetres of dry wood shavings of watch core layer below through transporter
Toward the dry wood shavings material transitional storehouse storage of watch core layer, the wood shavings more than 2 centimetres are sent to the dry wood shavings material mistake of watch core layer after smashing again
Storage is crossed to deposit；
5）The qualified dry wood shavings of watch core layer are transported through transporter, are sent in glue mixer after the metering of chip metering feed bin, while adjusting and mixing
Vermins-proof mildew-proof composite urea formaldehyde resin adhesive required by technique is sent in glue mixer by glue workshop section, and wood shavings and Vermins-proof mildew-proof are compound
Urea-formaldehyde resin adhesive achievees the effect that uniformly mixing is fully glued, wood shavings particle under being sufficiently stirred of watch core layer glue mixer
The 85-90% of plank dry weight is accounted for, Vermins-proof mildew-proof composite urea formaldehyde resin adhesive and additive account for 10-15%；
The additive is any one of titanium dioxide, talcum powder and white carbon；
The Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, is made of the raw material of following parts by weight：Melamine modified urea
50~100 parts of urea formaldehyde, 20~30 parts of oxidized starch, 1~3 part of polyvinyl alcohol, 3~8 parts of hydrogenated rosin, propylene glycol polyoxy third
2~3 parts of alkene polyvinylether, 4~6 parts of polyisocyanate, 0.5~5 part of isobutyl triethoxy silane, phenolate lignin 5~10
Part, 100~200 parts of clear water, 2.1~4.9 parts of Vermins-proof mildew-proof agent；
6）Wood shavings after sizing are sent through belt conveyer to mechanical classification spreading machine, mat formation uniformly by mechanical classification unit of mating formation
Smooth particle mat determines particle mat size specification according to hot press size；
7）Particle mat is subjected to precompressed, the pressure of precompressed is 0.8~0.9MPa, 5~8min of time；Finally carry out heat
Pressure, 2.5~3MPa of hot pressing pressure, temperature be 200~210 DEG C, hot pressing time be every millimeter of plate thickness 80s~85s, then send to
Balance quenched in library, obtained particieboard.
2. the method according to claim 1 for producing particieboard using Vermins-proof mildew-proof composite urea formaldehyde resin, it is characterised in that：
The Vermins-proof mildew-proof agent be active powdered carbon, bamboo charcoal powder, garlic powder and chilli powder mixture, weight ratio is followed successively by 2:3:
1:1；Active powdered carbon, bamboo charcoal powder, garlic powder and the chilli powder crosses 300 mesh sieve.
3. the method according to claim 1 for producing particieboard using Vermins-proof mildew-proof composite urea formaldehyde resin, it is characterised in that：
The production method of the Vermins-proof mildew-proof 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 propanediol polyoxypropylene polyvinylether of parts by weight is then added,
Stirring 10 minutes to 30 minutes, adds polyvinyl alcohol, the phenolate lignin of parts by weight, is allowed to dissolve, adds parts by weight
Several cyanurotriamide modified urea resin, oxidized starch and Vermins-proof mildew-proof agent is kept for 80-90 DEG C and is stirred to react 2-5 hours, made
With the polyisocyanate of first 10-20 minutes addition parts by weight, it is mixed evenly and can be used.
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| CN106244065A (en) * | 2016-08-29 | 2016-12-21 | 南宁市创锦胶合板有限责任公司 | Vermins-proof mildew-proof composite urea formaldehyde resin and production method thereof |
| CN109721991B (en) * | 2018-12-17 | 2020-10-02 | 会通新材料股份有限公司 | Anti-aging PC/ABS alloy plastic and preparation method thereof |
| CN110126056A (en) * | 2019-04-29 | 2019-08-16 | 李珂 | A kind of manufacture craft of fireproof medium-density fiberboard |
| CN110103310A (en) * | 2019-06-12 | 2019-08-09 | 李珂 | The production method of the mould proof particieboard of aroma type |
| CN110281340A (en) * | 2019-06-12 | 2019-09-27 | 李珂 | A kind of preparation method of antibacterial and mouldproof particieboard |
| CN111775262B (en) * | 2020-06-17 | 2022-08-16 | 江苏金牌厨柜有限公司 | Low-odor shaving board and preparation method thereof |
| CN113172721A (en) * | 2021-05-07 | 2021-07-27 | 辽宁尼尔科达环保材料有限公司 | Bamboo charcoal solid wood particle board |
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