CN109397463A - A kind of production method of Fireproof fire retardation type medium density fiber desk personality board - Google Patents
A kind of production method of Fireproof fire retardation type medium density fiber desk personality board Download PDFInfo
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- CN109397463A CN109397463A CN201811319427.2A CN201811319427A CN109397463A CN 109397463 A CN109397463 A CN 109397463A CN 201811319427 A CN201811319427 A CN 201811319427A CN 109397463 A CN109397463 A CN 109397463A
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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
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
- D21B1/061—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods using cutting devices
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses a kind of production methods of Fireproof fire retardation type medium density fiber desk personality board, it the steps include: (1) pretreatment of raw material, (2) screening, (3) boiling softening, (4) it grinds, (5) it is glued, is dry, (6) precompressed, (7) hot pressing, (8) saw sanction, sanding, (9) veneer hot pressing, (10) cutting edge is to get finished product.The present invention is primary raw material using discarded leftover pieces remained by eucalyptus bark, branch and manufacture plate, adds other weedtrees, turns waste into wealth, it can be achieved that making effective use of to timber resources；Modified paraffin and flame-retarded urea-formaldehyde Resin adhesive are added, so that its fire retardant performance greatly promotes, medium density fiber desk personality board obtained, fire retardant performance is good, and water-tolerant, content of formaldehyde is low, is safe and environment-friendly desk personality board.
Description
Technical field
The invention belongs to artificial board technology field, specifically a kind of Fireproof fire retardation type medium density fiber desk personality board
Production method.
Background technique
Wood-based plate is centainly to be machined using timber or other non-wood plants as raw material and be separated into various unit materials
Afterwards, apply or do not apply adhesive and other additives it is glued made of plate or molded article.It mainly include glued board, wood shavings
The three categories product such as (particle) plate and fiberboard, extension product and deep processed product reach hundreds of.Glued board is softened by boiling
Log, be peeled into thin slice greatly, then be mutually perpendicular to place by each direction of wooden fibers, with the synthetic resin gum of water-tolerant
Plate made of bonding, then pressurized, dry, saw side, surfacing.Its number of plies claims respectively at odd number, generally 3~13 layers
Three-ply board, five-ply board etc..There are linden, birch, Manchurian ash, beech, color wood, willow Eucalyptus etc. for making the tree species of glued board.Plane
Card is using applying or do not apply the wood wool of sizing material or plate that wood-fibred material is pressed into, and particieboard density is small, material is equal
It is even but easy to moisture absorption, intensity is low.Fiberboard is to be crushed the waste materials such as bark, wood shavings, branch, impregnate, being ground into wood pulp, then passing through
Extrusion forming is dried and manufactured plate.Depending on its density, it is divided into high-density plate, medium-density plate and low-density plank.
Many wood wastes, such as treetop, branch and slab can be generated in production plywood process, traditional timber factory is all by these
Waste material regards boiler oil, causes very big waste.Therefore, the production for developing fiberboard and its product is that timber resources is comprehensive
The effective way utilized.With the fast development of building decoration and upholstery, domestic Wood demand sharp increase, wood supply
Notch it is more and more prominent.Develop wood-based panel industry to be conducive to alleviate China's timber imbalance between supply and demand, is the weight for saving timber resources
Want approach.
The plate kind of office furniture common at present has: solid wood board, fiberboard, particieboard, core-board, glued board
Deng low-grade office furniture generally uses particieboard, and medium and high classes office furniture generally uses fiberboard.Woodwork plate (is commonly called as big core
Plate) internal solid-wood material is different, and density is not of uniform size, is only dried by simple, easily warp deformation；Its surface ratio
It is rougher, a large amount of glue or paint are usually used, relatively not environmentally, burst size of methanal is high, there is pungent smell.In particieboard
The phenomenon that portion is nutty structure, is not easy to milling type, be easy to cause sudden and violent tooth when cutting out plate, so more demanding to process equipment.
Solid wood board is natural wood material due to selection, and scarcity of resources price is higher, and color is also to be determined by tree species, alternative
Few, excessively dry and moist environment is also unsuitable for solid wood, so maintenance is got up more troublesome, resistance to acid and alkali is poor.Therefore, fine
Dimension plate just becomes the preferred material of office furniture.High density fiberboard density is high, processing difficulties, and easily matches in nailing, installation
It bursts when part；And low density fiberboard density is low, gap is big between wood-fibred, hygroscopic expansion, causes surface clad can to fall off, even
Plate disintegrates, thus the two in office furniture using all less.And medium density fibre board (MDF) has surfacing, internal structure fine and closely woven
The advantages of, processing effect is good, has stronger non-deformability and bearing capacity, and plate holds nail ability relatively by force, it can be achieved that more
Secondary dismounting is the important plate of medium and high classes office furniture.It is special that the present invention produces a kind of Fireproof fire retardation type medium density fiber desk
It is that one kind can have good development prospect to the effective way that timber is comprehensively utilized with plate.
Summary of the invention
The object of the present invention is to provide a kind of production method of Fireproof fire retardation type medium density fiber desk personality board, the party
Method is primary raw material using discarded leftover pieces remained by eucalyptus bark, branch and manufacture plate, adds other weedtrees,
Turn waste into wealth, it can be achieved that being made effective use of to timber resources；Modified paraffin and flame-retarded urea-formaldehyde Resin adhesive are added, so that
Its fire retardant performance greatly promotes, and medium density fiber desk personality board obtained, fire retardant performance is good, water-tolerant,
Content of formaldehyde is low.
The invention is realized by the following technical scheme:
A kind of production method of Fireproof fire retardation type medium density fiber desk personality board, specific steps are as follows:
(1) pretreatment of raw material: Eucalyptus leftover pieces are uniformly mixed with other weedtrees according to weight ratio 1:0.4~0.6, growth is cut
Spend the fragment of 4~5cm, 0.5~1cm of width；
The Eucalyptus leftover pieces include eucalyptus bark, branch and manufacture plate remained by discarded leftover pieces；Described is miscellaneous
Wood includes pine, linden, birch, Manchurian ash, willow Eucalyptus etc.；Timber (is counted using preceding first hang 15~20 days after felling
When), and mouldy, generation blackspot is avoided, the wood waste by stacking easily crushes, and fragment pick-up rate is high.
(2) it sieves: wood shavings obtained above is sieved, remove silt and partial size is less than the powder of 0.2cm, and
Iron is removed by strong magnetic inspiration row；
(3) boiling softens: wood shavings is transported in cooker, suitable quantity of water is added to impregnate 15~30min, it is then logical to cooker
Enter steam, holding pressure inside the tank is 0.15~0.20Mpa, 2~4min of boiling, obtained after boiling water content be 75~85% it is soft
Wood chip；Boiling wood shavings needs the good boiling degree of strict control, and wood shavings boiling degree is inadequate, then in defibrination, energy consumption is high,
Grinding machine is easy to damage, and digestion time is too long, then fiber color is deep, influences the quality of production board.
(4) grind: the cork sheet that boiling is obtained is transported to refiner and grinds, and 2500~3000r/min of revolving speed is ground
5~10min is ground, its fiber separation is made；
(5) it is glued, is dry: the fiber of milled being passed through in drying duct, is uniformly sprayed into from pipeline upper and lower ends with Sprayable
Modified paraffin lotion lotion and flame-retarded urea-formaldehyde Resin adhesive, are passed through hot wind and are dried, pipeline intake air temperature be 150~
160 DEG C, discharge port temperature be 60~70 DEG C, finally pass through cyclone separator or venturi separator, obtain moisture content be 7~
10% fiber delivers into feed bin storage；Exhaust steam is used to heat the water in cooker through over-heat-exchanger；Dried fibre
Dimension moisture content needs strict control, and moisture content is low, and the slab after precompressed is easy to crack in cutting edge, truncation, and moisture content Gao Ze is in prefabricating plate
It is explosive when base.
(6) precompressed: fiber is mated formation into continuous fluffy slab band through spreading machine, and is put down by scraping plain-barreled roll, extra fibre
Dimension sends feed bin back to by blast system；After gauge check, qualified fluffy slab band enter continuous strip formula preformer into
Row precompressed, preload pressure are 0.5~0.8Mpa, 20~30min of squeeze time；
(7) hot pressing: the slab after precompressed is sent into hot press after cutting edge, truncation and carries out hot pressing, and hot pressing temperature is 255~265 DEG C,
130~160s is suppressed under the conditions of 0.8~1.2Mpa, and 30~60s is suppressed under the conditions of 0.5~0.7Mpa, obtains hot pressing
Plate；
(8) saw sanction, sanding: heating platen passes through 3~8min of cold front heavy rain, places 48~72h at room temperature, and saw is cut into fixed specification,
Two sides sanding is to get medium density fibre board (MDF)；Medium density fiber 2.5~the 5.0cm of plate thickness, 0.5~0.8g/cm of density3,
Moisture content is no more than 10%.
(9) it veneer hot pressing: selects medium density fibre board (MDF) smooth, in homogeneous thickness as substrate layer, is uniformly coated with one layer of resistance
Urea-formaldehyde resin adhesive is fired, decorative layer is sticked, then sticks one layer of aluminum oxide abrasion-proof paper on plate two sides, be put into hot press
Hot pressing is carried out, hot pressing pressure is 0.5~0.6MPa, and hot pressing temperature is 130~140 DEG C, and hot pressing time is 3~6min；
(10) cutting edge: it is cooling, cutting edge is carried out to get desk personality board.
The straying quatity of modified paraffin lotion and flame-retarded urea-formaldehyde Resin adhesive described in step (5) are as follows: every cubic metre of timber
Fragment applies 3~5kg modified paraffin lotion and 170~200kg flame-retarded urea-formaldehyde Resin adhesive.
The modified paraffin is prepared from the following raw materials in parts by weight: 50~80 parts of paraffin, 20~30 parts of chlorinated paraffin,
15~25 parts of polypropylene, 5~10 parts of polysorbas20,5~10 parts of oleic acid, 3~6 parts of turpentine oil, 5~10 parts of calcium stearate；Carboxymethyl
2~5 parts of sodium cellulosate；The modified paraffin lotion the preparation method comprises the following steps: by heating paraffin to 50~60 DEG C, chlorination stone is added
Wax stirs evenly, and polypropylene, polysorbas20, oleic acid, turpentine oil, calcium stearate and sodium carboxymethylcellulose is added, in 85~95 DEG C
Under the conditions of react 1~3h, it is cooling, modified paraffin can be obtained.Modified paraffin prepared by the present invention, belongs to high molecular weight reactive
Type water repellent agent can be carried out efficiently firm combine by electrostatic attraction and macromolecule winding effect and fiber and reach sizing waterproof
Purpose, be low cost high-effect water-proof agent.
The flame-retarded urea-formaldehyde Resin adhesive is prepared from the following raw materials in parts by weight: 25~35 parts of paraformaldehyde, first
40~50 parts of aldehyde, 150~200 parts of urea, 10~20 parts of furfural, 5~10 parts of hydrogenated rosin, 15~20 parts of EVA latex, formaldehyde is caught
Catch 3~5 parts of agent, 2~5 parts of fire retardant, 0.5~2 part of vinyltrimethoxysilane, 5~15 parts of filler.
The formaldehyde catching agent is that polyvinyl alcohol, thiocarbamide and phenolate lignin ratio 3:2:1 by weight are mixed；Institute
The fire retardant stated is that nanmeter antimong trioxide and brominated Polystyrene ratio 1.2:1 by weight are mixed；The filler is
Flour and diatomite mix in any proportion.
The preparation method of the flame-retarded urea-formaldehyde Resin adhesive, urea are added in four times, and furfural is added in two portions, specifically
Steps are as follows:
(1) formaldehyde is added in reactor, adds the urea of total weight 50~60%, 70~80% furfural, uses NaOH solution
PH to 7.8~8.5 is adjusted, is to slowly warm up to 80~85 DEG C, reacts 40~50min；
(2) with formic acid tune pH to 5.5~6.0, the urea and hydrogenated rosin of total weight 20~30% is added, 80~85 DEG C of holding anti-
Answer 20~30min；
(3) with NaOH solution tune pH to 7.5~8.0, paraformaldehyde is added, then adds up the urea of weight 10~20%, remaining chaff
Aldehyde and fire retardant keep 88~92 DEG C of 30~40min of reaction；
(4) with formic acid tune pH to 5.5~6.0, remaining urea is added, reacts 30~40min, adjusts pH to 7.0~7.4, it is cooling
To 35 DEG C or less blowings, furfural modified urea-formaldehyde resin is obtained；
(5) EVA latex is added to stir evenly, while stirring addition filler and formaldehyde catching agent, 85~88 DEG C of reactions 30 of holding~
40min is cooled to room temperature, obtains flame-retarded urea-formaldehyde Resin adhesive.
Each raw material used in modified paraffin and urea-formaldehyde resin adhesive of the present invention is described below:
Paraffin is taken off from the resulting lube cut of crude distillation through solvent refining, solvent dewaxing or through wax freezing and crystallizing, squeezing
It is waxed to obtain slack wax, then through de-oiling, and sheet made from post-refining or acicular crystal.Chlorinated paraffin (chlorination approximately) be paraffin hydrocarbon chlorinated derivatives, have many advantages, such as that low volatility, fire-retardant, electrical insulating property is good, inexpensive,
With the plasticising of promotion paraffin, fire-retardant, waterproof function and effect.
Polypropylene (Polypropylene), be a kind of thermoplastic resin as prepared by propylene polymerization, for it is nontoxic, odorless,
The highly crystalline polymer of tasteless milky.Its heat resistance is good, and chemical property is stablized, and insulation and cryogenic property are good, is added to
After being modified in paraffin to it, modified paraffin can be made to be not easy to keep stablizing under high temperature and external force, impact resistance increases
By force.
Polysorbas20 (TWEEN-20), Chinese name: polyoxyethylene (20) sorbitanmonolaureate, is sorbierite and one
Dehydration, double dehydration compounds and laurate exist by every mole of sorbierite and its anhydro compounds and about 20 moles of ethylene oxide
It is condensed and is made under alkaline condition.Have the effects that emulsification, diffusion, solubilising, stabilization, be used as emulsifier, dispersing agent, solubilizer,
Stabilizer.
Paraformaldehyde (Paraformaldehyde；Polyoxymethylene), alias: poly- formaldehyde, polymerization formaldehyde, secondary first
Aldehyde, solid formaldehyde polymerize formaldehyde, and white amorphous powder is the line polymer of formaldehyde, have formaldehyde odor, molecular formula:
HO-(CH2O)n-H,n=10-100.Paraformaldehyde is soluble in hot water and releases formaldehyde, slow to be dissolved in cold water, can be dissolved in caustic alkali and
Alkali metal carbonate solution, does not dissolve in pure and mild ether, and high polymer is not soluble in water.Low polymerization degree paraformaldehyde replaces unskilled labor
Industry formalin, in synthetic pesticide, synthetic resin, coating and the diversified formaldehyde downstream product such as produce fumigant
In, the energy consumption of dehydration can be not only reduced, but also wastewater treatment capacity can be greatly reduced, can be used as disinfectant, fungicide, insecticide.
EVA latex be acetic acid second it is dilute-abbreviations of ethylene copolymerization emulsions, be with vinyl acetate and vinyl monomer be substantially former
Material, macromolecule emulsion made of being copolymerized with other auxiliary materials by emulsion polymerisation process.
Polyvinyl alcohol is applied to can absorb the extra free formaldehyde of release in Lauxite, reduces free in Lauxite
Content of formaldehyde can also improve the water resistance and adhesion strength of Lauxite.
Furfural (2-Furaldehyde), scientific name is furaldehyde, also known as 2 furan carboxyaldehyde, is same object with alditol
Matter is the derivative that the hydrogen atom on 2, furans is replaced by aldehyde radical.Furfural is to hydrolyze generation under the action of an acid by pentosan
Pentose, then be cyclized by dehydration of pentoses.Furfural has aldehyde radical, dialkylene ether functional group, therefore furfural has aldehyde, ether, diene
The property of the compounds such as hydrocarbon, is added furfural in Lauxite, introduces hydrophobic bond by cocondensation, can effectively improve urea
The water resistance of urea formaldehyde.
Hydrogenated rosin (hydrogenated rosin), it is amorphous transparent hard resin, contains dihydroabietic acid 75%, phase
To density 1.045,70~72 DEG C of softening point, refractive index 1.5270, viscosity (60% toluene solution) 3.6mPaS, acid value
162mgKOH/g, saponification number 167mgKOH/g, are dissolved in ethyl alcohol, acetone, dichloroethanes, carbon disulfide, toluene, pine by 203 DEG C of flash-point
In fuel-economizing, petroleum ether, industrial naptha and vegetable oil, have that antioxygenic property is good, brittleness is small, thermal stability is high, the spies such as of light color
Point can be used as antioxidant in adhesive.Its conventional production methods is using rosin as raw material, Pd/C for catalyst, using melting
Method, under 210~270 DEG C, the high temperature and pressure of 10.0~25.0MPa plus hydrogen is made.The present invention applies hydrogenated rosin moisture-proof
In urea-formaldehyde resin adhesive, hydrophobicity abietic acid (rosin main ingredient) is introduced in the polycondensation reaction of Lauxite and is used as side chain radical
Group carries out the modification of structural unit to Lauxite.Since there is conjugated double bonds in abietic acid molecule, easily occur with methylolurea
Condensation forms copolymer, meanwhile, the methylol in modified formaldehyde rosin is also easy to be condensed with imido grpup.Three kinds of condensation modes make hydroxyl
Methyl rosin and Lauxite are cross-linked to form tridimensional network, effectively improve the molecular structure of Lauxite, reduce ureaformaldehyde
The speed of resin release formaldehyde.
Thiocarbamide (Thiourea), also known as: thio urea, chemical formula CH4N2S, white and glossiness crystal.Water is dissolved in,
Ethyl alcohol can be dissolved in when heating, it is atomic to be dissolved in ether.Thiocarbamide, can be effectively as the formaldehyde catching agent in urea-formaldehyde resin adhesive
Reduce the content of formaldehyde in urea-formaldehyde resin adhesive.
Phenolate lignin can be further improved phenol hydroxyl in lignin using existing phenolate technique to lignin processing
Base content improves free formaldehyde in urea-formaldehyde resin content.
Nanmeter antimong trioxide is also known as nanometer stibium trioxide, and white powder is not soluble in water, is dissolved in sodium hydroxide solution and acid.Three
It aoxidizes two antimony and belongs to additive flame retardant, be often used in combination with other fire retardants, antismoke agent, can produce synergistic effect between each component.Three
Two antimony are aoxidized at burning initial stage, are melting first, protective film is formed on the surface of the material and completely cuts off air, by the internal endothermic reaction,
Reduce ignition temperature.Antimony oxide is gasified at high operating temperatures, dilutes oxygen concentration in air, to play fire-retardant work
With.
Brominated Polystyrene (abbreviation BPS) is a kind of bromine system organic fire-retardant, is using polystyrene as raw material, through bromination
At there is good mechanical-physical and the chemical property such as high flame retardant, thermal stability and photostability and antimonide, which to cooperate, makes
With flame retardant effect is more preferably.Brominated Polystyrene is a kind of environmental protection fire retarding agent approved in the world, without polybrominated diphenyl ethers and more
Bromo biphenyl meets ROHS standard.With good, no precipitation, non-blooming, good electrical property, to material mechanical performance with material compatibility
Influence small, the advantages such as price is low.
The beneficial effects of the present invention are:
1, the production method of Fireproof fire retardation type medium density fiber desk personality board of the invention, using eucalyptus bark, branch with
And discarded leftover pieces remained by manufacture plate are primary raw material, add other weedtrees, turn waste into wealth, are that timber resources is comprehensive
The effective way utilized is closed, is conducive to alleviate China's timber imbalance between supply and demand.Timber utilization rate of the invention is traditional mask-making technology
2.5~3 times, the desk personality board quality product rate of preparation is more than 90%.
2, the modified paraffin that is added of the present invention belongs to macromolecule reaction type water repellent agent by being specifically formulated and technique is made,
Efficiently firm combine can be carried out by electrostatic attraction and macromolecule winding effect and fiber to achieve the purpose that be glued waterproof, be
The high-effect water-proof agent of low cost, can be improved water-fast weatherability, anti-flammability and the compressive property of desk personality board.
3, the flame-retarded urea-formaldehyde Resin adhesive that the present invention uses replaces part formaldehyde to be reacted, first using paraformaldehyde
It is prepared into furfural modified urea-formaldehyde resin, EVA latex, filler and formaldehyde catching agent is added, flame-retarded urea-formaldehyde resin is obtained after reaction
Adhesive, wherein urea is added in four times, and furfural is added in two portions, and furfural has aldehyde radical, dialkylene ether functional group, therefore chaff
Aldehyde has the property of the compounds such as aldehyde, ether, alkadienes, and furfural is added in Lauxite, is introduced by cocondensation hydrophobic
Key can effectively improve the water resistance of Lauxite；Fire retardant therein is pressed by nanmeter antimong trioxide and brominated Polystyrene
Weight ratio 1.2:1 is mixed, and antimony oxide belongs to additive flame retardant, is often used in combination with other fire retardants, antismoke agent, respectively
It can produce synergistic effect between component.Antimony oxide is melting first at burning initial stage, forms protective film isolation on the surface of the material
Air reduces ignition temperature, antimony oxide is gasified at high operating temperatures, is diluted in air by the internal endothermic reaction
Oxygen concentration, to play fire retardation.Brominated Polystyrene has the good machines such as high flame retardant, thermal stability and photostability
Tool physics and chemical property contain polybrominated diphenyl ethers and polybrominated biphenyls, meet ROHS standard, have good, no analysis with material compatibility
Out, non-blooming, good electrical property influences material mechanical performance small, and the advantages such as price is low and nanmeter antimong trioxide cooperation make
With flame retardant effect is more preferably.
4, the flame-retarded urea-formaldehyde Resin adhesive obtained under process conditions of the present invention has good fire-retardant, waterproof
Moisture-proof performance, gumminess is good, and through detecting, free formaldehyde content is 0.15~0.17%, is far below 14732 " timber of GB/T
Industrial adhesive ureaformaldehyde, phenolic aldehyde, melamine resin " in≤0.3% standard requirements.
5, the production method of Fireproof fire retardation type medium density fiber desk personality board of the present invention, timber use preceding elder generation
15~20 days (timing after felling) is hung, mouldy, generation blackspot is avoided, the wood waste by stacking easily crushes, wood
Material fragment pick-up rate is high；The good boiling degree of strict control, modified paraffin and flame-retarded urea-formaldehyde Resin adhesive when boiling wood shavings
Straying quatity also pass through stringent control, in order to avoid influence production board quality.It is done according to medium density fiber made from strict technology
Public table personality board, fire retardant performance is good, and water-tolerant, content of formaldehyde is low, and intensity is high, good toughness, is safe and environment-friendly practical
Type desk personality board.
Specific embodiment
Technical solution of the present invention is introduced in order to more detailed, below with reference to embodiment, the present invention is done furtherly
It is bright.
Embodiment 1
A kind of production method of Fireproof fire retardation type medium density fiber desk personality board, specific steps are as follows:
(1) pretreatment of raw material: Eucalyptus leftover pieces are uniformly mixed with other weedtrees according to weight ratio 1:0.4, cut into length 4~
The fragment of 5cm, 0.5~0.6cm of width；
The Eucalyptus leftover pieces be eucalyptus bark, branch and manufacture plate remained by discarded leftover pieces；The weedtree
For pine and willow Eucalyptus；Timber is first hung 15 days using preceding；
(2) it sieves: wood shavings obtained above is sieved, remove silt and partial size is less than the powder of 0.2cm, and pass through
Strong magnetic inspiration row removes iron；
(3) boiling softens: wood shavings being transported in cooker, adds suitable quantity of water to impregnate 30min, is then passed through steaming to cooker
Vapour, holding pressure inside the tank are 0.15Mpa, boiling 4min, and the cork sheet that water content is 80% is obtained after boiling；
(4) grind: the cork sheet that boiling is obtained is transported to refiner and grinds, revolving speed 2500r/min, grinds 10min, makes
Its fiber separation；
(5) it is glued, is dry: the fiber of milled being passed through in drying duct, is uniformly sprayed into from pipeline upper and lower ends with Sprayable
Modified paraffin lotion lotion and flame-retarded urea-formaldehyde Resin adhesive, are passed through hot wind and are dried, and pipeline intake air temperature is 155 DEG C,
Discharge port temperature be 68 DEG C, finally pass through cyclone separator or venturi separator, obtain moisture content be 8% fiber, convey into
Pan feeding storage is deposited；
(6) precompressed: fiber is mated formation into continuous fluffy slab band through spreading machine, and is put down by scraping plain-barreled roll, extra fiber is logical
It crosses blast system and sends feed bin back to；After gauge check, qualified fluffy slab band, which enters continuous strip formula preformer, to be carried out in advance
Pressure, preload pressure 0.8Mpa, squeeze time 20min；
(7) hot pressing: the slab after precompressed is sent into hot press after cutting edge, truncation and carries out hot pressing, and hot pressing temperature is 255 DEG C,
1.2Mpa 130s is suppressed under the conditions of, 30s is suppressed under the conditions of 0.7Mpa, obtains heating platen；
(8) saw sanction, sanding: heating platen passes through cold front heavy rain 5min, places 48h at room temperature, and saw is cut into fixed specification, two facing sands
Light is to get medium density fibre board (MDF)；Medium density fiber the plate thickness 5.0cm, density 0.6g/cm3, moisture content is no more than 10%.
(9) it veneer hot pressing: selects medium density fibre board (MDF) smooth, in homogeneous thickness as substrate layer, is uniformly coated with one layer of resistance
Urea-formaldehyde resin adhesive is fired, decorative layer is sticked, then sticks one layer of aluminum oxide abrasion-proof paper on plate two sides, be put into hot press
Hot pressing, hot pressing pressure 0.5MPa are carried out, hot pressing temperature is 130 DEG C, hot pressing time 5min；
(10) cutting edge: it is cooling, cutting edge is carried out to get desk personality board.
The straying quatity of modified paraffin lotion and flame-retarded urea-formaldehyde Resin adhesive described in step (5) are as follows: every cubic metre of timber
Fragment applies 3kg modified paraffin lotion and 180kg flame-retarded urea-formaldehyde Resin adhesive.
The modified paraffin is prepared from the following raw materials in parts by weight: 80 parts of paraffin, 30 parts of chlorinated paraffin, and polipropene 25
Part, 10 parts of polysorbas20,10 parts of oleic acid, 6 parts of turpentine oil, 10 parts of calcium stearate；5 parts of sodium carboxymethylcellulose；The modification stone
Wax emulsion the preparation method comprises the following steps: by heating paraffin to 58 DEG C, chlorinated paraffin is added and stirs evenly, be added polypropylene, polysorbas20,
Oleic acid, turpentine oil, calcium stearate and sodium carboxymethylcellulose react 2h under the conditions of 85 DEG C, cooling, and modified stone can be obtained
Wax.
The flame-retarded urea-formaldehyde Resin adhesive is prepared from the following raw materials in parts by weight: 25 parts of paraformaldehyde, formaldehyde 45
Part, 150 parts of urea, 10 parts of furfural, 5 parts of hydrogenated rosin, 20 parts of EVA latex, 5 parts of formaldehyde catching agent, 2 parts of fire retardant, vinyl
0.5 part of trimethoxy silane, 5 parts of filler.
The formaldehyde catching agent is that polyvinyl alcohol, thiocarbamide and phenolate lignin ratio 3:2:1 by weight are mixed；Institute
The fire retardant stated is that nanmeter antimong trioxide and brominated Polystyrene ratio 1.2:1 by weight are mixed；The filler is
Flour and diatomite mix in any proportion.
The preparation method of the flame-retarded urea-formaldehyde Resin adhesive, urea are added in four times, and furfural is added in two portions, specifically
Steps are as follows:
(1) formaldehyde is added in reactor, adds the urea of total weight 55%, 75% furfural, extremely with NaOH solution tune pH
8.0,85 DEG C are to slowly warm up to, 40min is reacted；
(2) with formic acid tune pH to 6.0, the urea and hydrogenated rosin of total weight 30% is added, keeps 85 DEG C of reaction 30min；
(3) with NaOH solution tune pH to 8.0, paraformaldehyde is added, then adds up the urea of weight 10%, remaining furfural and fire-retardant
Agent keeps 90 DEG C of reaction 35min；
(4) with formic acid tune pH to 6.0, remaining urea is added, reacts 30min, adjusts pH to 7.2, is cooled to 35 DEG C or less blowings,
Obtain furfural modified urea-formaldehyde resin；
(5) EVA latex is added to stir evenly, filler and formaldehyde catching agent is added while stirring, keeps 88 DEG C of reaction 40min, drop
It warms to room temperature, obtains flame-retarded urea-formaldehyde Resin adhesive.
Embodiment 2
A kind of production method of Fireproof fire retardation type medium density fiber desk personality board, specific steps are as follows:
(1) pretreatment of raw material: Eucalyptus leftover pieces are uniformly mixed with other weedtrees according to weight ratio 1:0.5, cut into length 4~
The fragment of 5cm, 0.8~1cm of width；
The Eucalyptus leftover pieces be eucalyptus bark, branch and manufacture plate remained by discarded leftover pieces；The weedtree
For pine and Manchurian ash, timber is first hung 18 days using preceding；
(2) it sieves: wood shavings obtained above is sieved, remove silt and partial size is less than the powder of 0.2cm, and pass through
Strong magnetic inspiration row removes iron；
(3) boiling softens: wood shavings being transported in cooker, adds suitable quantity of water to impregnate 20min, is then passed through steaming to cooker
Vapour, holding pressure inside the tank are 0.18Mpa, boiling 3min, and the cork sheet that water content is 85% is obtained after boiling；
(4) grind: the cork sheet that boiling is obtained is transported to refiner and grinds, revolving speed 2800r/min, grinds 8min, makes
Its fiber separation；
(5) it is glued, is dry: the fiber of milled being passed through in drying duct, is uniformly sprayed into from pipeline upper and lower ends with Sprayable
Modified paraffin lotion lotion and flame-retarded urea-formaldehyde Resin adhesive, are passed through hot wind and are dried, and pipeline intake air temperature is 160 DEG C,
Discharge port temperature be 65 DEG C, finally pass through cyclone separator or venturi separator, obtain moisture content be 9% fiber, convey into
Pan feeding storage is deposited；
(6) precompressed: fiber is mated formation into continuous fluffy slab band through spreading machine, and is put down by scraping plain-barreled roll, extra fiber is logical
It crosses blast system and sends feed bin back to；After gauge check, qualified fluffy slab band, which enters continuous strip formula preformer, to be carried out in advance
Pressure, preload pressure 0.5Mpa, squeeze time 30min；
(7) hot pressing: the slab after precompressed is sent into hot press after cutting edge, truncation and carries out hot pressing, and hot pressing temperature is 260 DEG C,
150s is suppressed under the conditions of 1.0Mpa, 50s is suppressed under the conditions of 0.6Mpa, obtains heating platen；
(8) saw sanction, sanding: heating platen passes through cold front heavy rain 8min, places 48h at room temperature, and saw is cut into fixed specification, two facing sands
Light is to get medium density fibre board (MDF)；Medium density fiber the plate thickness 3.5cm, density 0.5g/cm3, moisture content is no more than 10%；
(9) it veneer hot pressing: selects medium density fibre board (MDF) smooth, in homogeneous thickness as substrate layer, is uniformly coated with one layer of fire-retardant urea
Urea formaldehyde adhesive sticks decorative layer, then sticks one layer of aluminum oxide abrasion-proof paper on plate two sides, is put into hot press progress
Hot pressing, hot pressing pressure 0.6MPa, hot pressing temperature are 130 DEG C, hot pressing time 6min；
(10) cutting edge: it is cooling, cutting edge is carried out to get desk personality board.
The straying quatity of modified paraffin lotion and flame-retarded urea-formaldehyde Resin adhesive described in step (5) are as follows: every cubic metre of timber
Fragment applies 5kg modified paraffin lotion and 170kg flame-retarded urea-formaldehyde Resin adhesive.
The modified paraffin is prepared from the following raw materials in parts by weight: 70 parts of paraffin, 25 parts of chlorinated paraffin, and polypropylene 20
Part, 6 parts of polysorbas20,7 parts of oleic acid, 4 parts of turpentine oil, 8 parts of calcium stearate；2 parts of sodium carboxymethylcellulose；The modified paraffin
Lotion the preparation method comprises the following steps: by heating paraffin to 50 DEG C, chlorinated paraffin is added and stirs evenly, polypropylene, polysorbas20, oil is added
Acid, turpentine oil, calcium stearate and sodium carboxymethylcellulose react 1h under the conditions of 95 DEG C, cooling, and modified paraffin can be obtained.
The flame-retarded urea-formaldehyde Resin adhesive is prepared from the following raw materials in parts by weight: 30 parts of paraformaldehyde, formaldehyde 40
Part, 160 parts of urea, 15 parts of furfural, 8 parts of hydrogenated rosin, 18 parts of EVA latex, 4 parts of formaldehyde catching agent, 3 parts of fire retardant, vinyl
1 part of trimethoxy silane, 9 parts of filler.
The formaldehyde catching agent is that polyvinyl alcohol, thiocarbamide and phenolate lignin ratio 3:2:1 by weight are mixed；Institute
The fire retardant stated is that nanmeter antimong trioxide and brominated Polystyrene ratio 1.2:1 by weight are mixed；The filler is
Flour and diatomite mix in any proportion.
The preparation method of the flame-retarded urea-formaldehyde Resin adhesive, urea are added in four times, and furfural is added in two portions, specifically
Steps are as follows:
(1) formaldehyde is added in reactor, adds the urea of total weight 60%, 80% furfural, extremely with NaOH solution tune pH
7.8,85 DEG C are to slowly warm up to, 405min is reacted；
(2) with formic acid tune pH to 6.0, the urea and hydrogenated rosin of total weight 25% is added, keeps 85 DEG C of reaction 30min；
(3) with NaOH solution tune pH to 7.5, paraformaldehyde is added, then adds up the urea of weight 10%, remaining furfural and fire-retardant
Agent keeps 88 DEG C of reaction 40min；
(4) with formic acid tune pH to 6.0, remaining urea is added, reacts 40min, adjusts pH to 7.4, is cooled to 35 DEG C with decentralization
Material, obtains furfural modified urea-formaldehyde resin；
(5) EVA latex is added to stir evenly, filler and formaldehyde catching agent is added while stirring, keeps 85 DEG C of reaction 40min, drop
It warms to room temperature, obtains flame-retarded urea-formaldehyde Resin adhesive.
Embodiment 3
A kind of production method of Fireproof fire retardation type medium density fiber desk personality board, specific steps are as follows:
(1) pretreatment of raw material: Eucalyptus leftover pieces are uniformly mixed with other weedtrees according to weight ratio 1:0.6, cut into length 4~
The fragment of 5cm, 0.5~0.7cm of width；
The Eucalyptus leftover pieces include eucalyptus bark, branch and manufacture plate remained by discarded leftover pieces；Described is miscellaneous
Wood includes Manchurian ash, willow Eucalyptus, and timber is first hung 20 days using preceding；
(2) it sieves: wood shavings obtained above is sieved, remove silt and partial size is less than the powder of 0.2cm, and pass through
Strong magnetic inspiration row removes iron；
(3) boiling softens: wood shavings being transported in cooker, adds suitable quantity of water to impregnate 15min, is then passed through steaming to cooker
Vapour, holding pressure inside the tank are 0.20Mpa, boiling 2min, and the cork sheet that water content is 75% is obtained after boiling；
(4) grind: the cork sheet that boiling is obtained is transported to refiner and grinds, revolving speed 3000r/min, grinds 5min, makes
Its fiber separation；
(5) it is glued, is dry: the fiber of milled being passed through in drying duct, is uniformly sprayed into from pipeline upper and lower ends with Sprayable
Modified paraffin lotion lotion and flame-retarded urea-formaldehyde Resin adhesive, are passed through hot wind and are dried, and pipeline intake air temperature is 150 DEG C,
Discharge port temperature is 60 DEG C, finally passes through cyclone separator or venturi separator, obtains the fiber that moisture content is 10%, conveying
It is stored into feed bin；
(6) precompressed: fiber is mated formation into continuous fluffy slab band through spreading machine, and is put down by scraping plain-barreled roll, extra fiber is logical
It crosses blast system and sends feed bin back to；After gauge check, qualified fluffy slab band, which enters continuous strip formula preformer, to be carried out in advance
Pressure, preload pressure 0.7Mpa, squeeze time 25min；
(7) hot pressing: the slab after precompressed is sent into hot press after cutting edge, truncation and carries out hot pressing, and hot pressing temperature is 265 DEG C,
130s is suppressed under the conditions of 0.8Mpa, 60s is suppressed under the conditions of 0.5Mpa, obtains heating platen；
(8) saw sanction, sanding: heating platen passes through cold front heavy rain 3min, places 48h at room temperature, and saw is cut into fixed specification, two facing sands
Light is to get medium density fibre board (MDF)；The medium density fiber plate thickness 2.5cm, 0. 7g/cm of density3, moisture content is no more than
10%；
(9) it veneer hot pressing: selects medium density fibre board (MDF) smooth, in homogeneous thickness as substrate layer, is uniformly coated with one layer of fire-retardant urea
Urea formaldehyde adhesive sticks decorative layer, then sticks one layer of aluminum oxide abrasion-proof paper on plate two sides, is put into hot press progress
Hot pressing, hot pressing pressure 0.5MPa, hot pressing temperature are 135 DEG C, hot pressing time 6min；
(10) cutting edge: it is cooling, cutting edge is carried out to get desk personality board.
The straying quatity of modified paraffin lotion and flame-retarded urea-formaldehyde Resin adhesive described in step (5) are as follows: every cubic metre of timber
Fragment applies 3kg modified paraffin lotion and 200kg flame-retarded urea-formaldehyde Resin adhesive.
The modified paraffin is prepared from the following raw materials in parts by weight: 50 parts of paraffin, 20 parts of chlorinated paraffin, and polypropylene 15
Part, 5 parts of polysorbas20,5 parts of oleic acid, 3 parts of turpentine oil, 5 parts of calcium stearate；3 parts of sodium carboxymethylcellulose；The modified paraffin
Lotion the preparation method comprises the following steps: by heating paraffin to 60 DEG C, chlorinated paraffin is added and stirs evenly, polypropylene, polysorbas20, oil is added
Acid, turpentine oil, calcium stearate and sodium carboxymethylcellulose react 3h under the conditions of 88 DEG C, cooling, and modified paraffin can be obtained.
The flame-retarded urea-formaldehyde Resin adhesive is prepared from the following raw materials in parts by weight: 35 parts of paraformaldehyde, formaldehyde 50
Part, 200 parts of urea, 20 parts of furfural, 10 parts of hydrogenated rosin, 15 parts of EVA latex, 3 parts of formaldehyde catching agent, 5 parts of fire retardant, vinyl
2 parts of trimethoxy silane, 15 parts of filler.
The formaldehyde catching agent is that polyvinyl alcohol, thiocarbamide and phenolate lignin ratio 3:2:1 by weight are mixed；Institute
The fire retardant stated is that nanmeter antimong trioxide and brominated Polystyrene ratio 1.2:1 by weight are mixed；The filler is
Flour and diatomite mix in any proportion.
The preparation method of the flame-retarded urea-formaldehyde Resin adhesive, urea are added in four times, and furfural is added in two portions, specifically
Steps are as follows:
(1) formaldehyde is added in reactor, adds the urea of total weight 50%, 70% furfural, extremely with NaOH solution tune pH
8.5,80 DEG C are to slowly warm up to, 50min is reacted；
(2) with formic acid tune pH to 5.5, the urea and hydrogenated rosin of total weight 30% is added, keeps 80 DEG C of reaction 30min；
(3) with NaOH solution tune pH to 8.0, paraformaldehyde is added, then adds up the urea of weight 10%, remaining furfural and fire-retardant
Agent keeps 92 DEG C of reaction 30min；
(4) with formic acid tune pH to 5.5, remaining urea is added, reacts 40min, adjusts pH to 7.0, is cooled to 35 DEG C or less blowings,
Obtain furfural modified urea-formaldehyde resin；
(5) EVA latex is added to stir evenly, filler and formaldehyde catching agent is added while stirring, keeps 85 DEG C of reaction 40min, drop
It warms to room temperature, obtains flame-retarded urea-formaldehyde Resin adhesive.
Application Example
1, Hengxian County's wood-based plate Co., Ltd produces medium density fiber desk personality board, warp using method of the invention
The phenomenon that detection, trial production does not have rubber granule and layering over the past half year, in plate layer, there is sand trace and sand leakage phenomenon less than 1%,
Obtained high-class product is produced up to 94% or more.
Claims (7)
1. a kind of production method of Fireproof fire retardation type medium density fiber desk personality board, it is characterised in that: specific steps are as follows:
(1) pretreatment of raw material: Eucalyptus leftover pieces are uniformly mixed with other weedtrees according to weight ratio 1:0.4~0.6, growth is cut
Spend the fragment of 4~5cm, 0.5~1cm of width；
(2) it sieves: wood shavings obtained above is sieved, remove silt and partial size is less than the powder of 0.2cm, and pass through
Strong magnetic inspiration row removes iron；
(3) boiling softens: wood shavings is transported in cooker, suitable quantity of water is added to impregnate 15~30min, it is then logical to cooker
Enter steam, holding pressure inside the tank is 0.15~0.20Mpa, 2~4min of boiling, obtained after boiling water content be 75~85% it is soft
Wood chip；
(4) grind: the cork sheet that boiling is obtained is transported to refiner and grinds, 2500~3000r/min of revolving speed, grinding 5
~10min makes its fiber separation；
(5) it is glued, is dry: the fiber of milled being passed through in drying duct, is uniformly sprayed into from pipeline upper and lower ends with Sprayable
Modified paraffin lotion lotion and flame-retarded urea-formaldehyde Resin adhesive, are passed through hot wind and are dried, pipeline intake air temperature be 150~
160 DEG C, discharge port temperature be 60~70 DEG C, finally pass through cyclone separator or venturi separator, obtain moisture content be 7~
10% fiber delivers into feed bin storage；Exhaust steam is used to heat the water in cooker through over-heat-exchanger；
(6) precompressed: fiber is mated formation into continuous fluffy slab band through spreading machine, and is put down by scraping plain-barreled roll, extra fiber is logical
It crosses blast system and sends feed bin back to；After gauge check, qualified fluffy slab band, which enters continuous strip formula preformer, to be carried out in advance
Pressure, preload pressure are 0.5~0.8Mpa, 20~30min of squeeze time；
(7) hot pressing: the slab after precompressed is sent into hot press after cutting edge, truncation and carries out hot pressing, and hot pressing temperature is 255~265 DEG C,
130~160s is suppressed under the conditions of 0.8~1.2Mpa, and 30~60s is suppressed under the conditions of 0.5~0.7Mpa, obtains hot pressing
Plate；
(8) saw sanction, sanding: heating platen passes through 3~8min of cold front heavy rain, places 48~72h at room temperature, and saw is cut into fixed specification,
Two sides sanding is to get medium density fibre board (MDF)；
(9) it veneer hot pressing: selects medium density fibre board (MDF) smooth, in homogeneous thickness as substrate layer, is uniformly coated with one layer of fire-retardant urea
Urea formaldehyde adhesive sticks decorative layer, then sticks one layer of aluminum oxide abrasion-proof paper on plate two sides, is put into hot press progress
Hot pressing, hot pressing pressure are 0.5~0.6MPa, and hot pressing temperature is 130~140 DEG C, and hot pressing time is 3~6min；
(10) cutting edge: it is cooling, cutting edge is carried out to get desk personality board.
2. the production method of Fireproof fire retardation type medium density fiber desk personality board according to claim 1, feature exist
In: the straying quatity of modified paraffin lotion and flame-retarded urea-formaldehyde Resin adhesive described in step (5) are as follows: every cubic metre of wood shavings is applied
Add 3~5kg modified paraffin lotion and 170~200kg flame-retarded urea-formaldehyde Resin adhesive.
3. the production method of Fireproof fire retardation type medium density fiber desk personality board according to claim 1, feature exist
In: medium density fiber 2.5~5.0cm of plate thickness, 0.5~0.8g/cm of density described in step (8)3, moisture content is no more than 10%.
4. the production method of Fireproof fire retardation type medium density fiber desk personality board according to claim 1, feature exist
In: the modified paraffin is prepared from the following raw materials in parts by weight: 50~80 parts of paraffin, 20~30 parts of chlorinated paraffin, poly- third
15~25 parts of alkene, 5~10 parts of polysorbas20,5~10 parts of oleic acid, 3~6 parts of turpentine oil, 5~10 parts of calcium stearate, carboxymethyl cellulose
2~5 parts of plain sodium；The modified paraffin lotion the preparation method comprises the following steps: by heating paraffin to 50~60 DEG C, chlorinated paraffin is added and stirs
It mixes uniformly, polypropylene, polysorbas20, oleic acid, turpentine oil, calcium stearate and sodium carboxymethylcellulose is added, in 85~95 DEG C of conditions
1~3h of lower reaction, it is cooling, modified paraffin can be obtained.
5. the production method of Fireproof fire retardation type medium density fiber desk personality board according to claim 1, feature exist
In: the flame-retarded urea-formaldehyde Resin adhesive is prepared from the following raw materials in parts by weight: 25~35 parts of paraformaldehyde, formaldehyde 40~
50 parts, 150~200 parts of urea, 10~20 parts of furfural, 5~10 parts of hydrogenated rosin, 15~20 parts of EVA latex, formaldehyde catching agent 3
~5 parts, 2~5 parts of fire retardant, 0.5~2 part of vinyltrimethoxysilane, 5~15 parts of filler.
6. the production method of Fireproof fire retardation type medium density fiber desk personality board according to claim 5, feature exist
In: the formaldehyde catching agent is that polyvinyl alcohol, thiocarbamide and phenolate lignin ratio 3:2:1 by weight are mixed；Described
Fire retardant is that nanmeter antimong trioxide and brominated Polystyrene ratio 1.2:1 by weight are mixed；The filler is flour
It is mixed in any proportion with diatomite.
7. the production method of Fireproof fire retardation type medium density fiber desk personality board according to claim 5, feature exist
In: the preparation method of the flame-retarded urea-formaldehyde Resin adhesive, urea are added in four times, and furfural is added in two portions, specific steps
It is as follows:
(1) formaldehyde is added in reactor, adds the urea of total weight 50~60%, 70~80% furfural, uses NaOH solution
PH to 7.8~8.5 is adjusted, is to slowly warm up to 80~85 DEG C, reacts 40~50min；
(2) with formic acid tune pH to 5.5~6.0, the urea and hydrogenated rosin of total weight 20~30% is added, 80~85 DEG C of holding anti-
Answer 20~30min；
(3) with NaOH solution tune pH to 7.5~8.0, paraformaldehyde is added, then adds up the urea of weight 10~15%, remaining chaff
Aldehyde and fire retardant keep 88~92 DEG C of 30~40min of reaction；
(4) with formic acid tune pH to 5.5~6.0, remaining urea is added, reacts 30~40min, adjusts pH to 7.0~7.4, it is cooling
To 35 DEG C or less blowings, furfural modified urea-formaldehyde resin is obtained；
(5) EVA latex is added to stir evenly, while stirring addition filler and formaldehyde catching agent, 85~88 DEG C of reactions 30 of holding~
40min is cooled to room temperature, obtains flame-retarded urea-formaldehyde Resin adhesive.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110561963A (en) * | 2019-08-30 | 2019-12-13 | 祝恒 | Novel environment-friendly device combining woody fiber and lacquer and manufacturing method thereof |
| CN115716290A (en) * | 2022-11-28 | 2023-02-28 | 扬州大晟药用玻璃有限公司 | Composite fiber board and preparation method thereof |
-
2018
- 2018-11-07 CN CN201811319427.2A patent/CN109397463A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110561963A (en) * | 2019-08-30 | 2019-12-13 | 祝恒 | Novel environment-friendly device combining woody fiber and lacquer and manufacturing method thereof |
| CN115716290A (en) * | 2022-11-28 | 2023-02-28 | 扬州大晟药用玻璃有限公司 | Composite fiber board and preparation method thereof |
| CN115716290B (en) * | 2022-11-28 | 2024-01-23 | 扬州维工科技有限公司 | Composite fiber board and preparation method thereof |
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Application publication date: 20190301 |