CN109291167A - A kind of production method of high moisture-proof medium density fiber timber floor - Google Patents
A kind of production method of high moisture-proof medium density fiber timber floor Download PDFInfo
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- CN109291167A CN109291167A CN201811319363.6A CN201811319363A CN109291167A CN 109291167 A CN109291167 A CN 109291167A CN 201811319363 A CN201811319363 A CN 201811319363A CN 109291167 A CN109291167 A CN 109291167A
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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
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/34—Organic impregnating agents
- B27K3/50—Mixtures of different organic impregnating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/0085—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C
-
- 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
- B27L11/08—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood fibres, e.g. produced by tearing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
- B27M3/18—Manufacture or reconditioning of specific semi-finished or finished articles of furniture or of doors
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/40—Chemically modified polycondensates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/70—Hydrophobation treatment
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses a kind of production methods of high moisture-proof medium density fiber timber floor, 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) cooling, saw sanction, sanding, (9) gluing, veneer hot pressing, (10) health, fluting are to get finished product.The present invention is primary raw material using discarded leftover pieces remained by eucalyptus bark, branch and manufacture plate, add the weedtrees such as pine, linden, birch, Manchurian ash, beech, color wood, willow Eucalyptus, turn waste into wealth, it can be achieved that being made effective use of to timber resources；Modified paraffin and Moisture-proof urea-formaldehyde resin adhesive are added, keeps timber floor humidity resistance obtained good, water-tolerant, content of formaldehyde is low, and compression strength is high, and free formaldehyde content meets relevant criterion requirement, and burst size of methanal meets E1 grades of requirements in 18580 standard of GB/T.
Description
Technical field
The invention belongs to artificial board technology field, the producer of specifically a kind of high moisture-proof medium density fiber timber floor
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.
Timber floor refers to the floor made of timber, and the timber floor of domestic product is broadly divided into solid wooden floor board, strengthens wood ground
Plate, solid wooden compound floor, multi-layer composite floor, bamboo floor and six major class of cork flooring and emerging Wood-plastic floor.With
The development of construction industry, interior decoration industry will have bigger development, and one of the important materials of timber floor as interior decoration also will
Develop therewith.2010, about 3.99 hundred million square metres of China's floor production enterprises sales volume, increase by 9.6% on a year-on-year basis, wherein strengthen ground
The market share that plate occupies is larger, reaches nearly 60%.Although the volume of production and marketing of domestic timber floor is substantially improved compared with former years, by
The series of factors such as China human mortality, timber floor price influence, China per capita Wood floor board product compared with western developed country still in compared with
Low-level.According to statistics, the European only Per capita area of consolidated floor and solid wooden floor board in 2010 is just up to 0.79 square metre, and Chinese people
Equal timber floor area is only 0.03 square metre, and gap is huge, this also reflects China's Solid Wood Flooring Markets potential demand amount from side
It is huge.
The Wood Flooring Industry in China's future will go to develop along following direction: one, to scale, standardization, technicalization,
Environmental protection, serviceization direction are developed.Two, the use function that timber floor is stepped up by technological means, improves the ruler of timber floor
Very little stability makes woodenly more wear resistant, beautiful, anti-flaming, water-fast, antistatic etc..Three, the surface processing of solid wooden floor board will appear each
Kind of form such as is come to the surface paint or using abrasion-resistant clear material progress clad can using high abrasion.Four, compoiste wood floor (strengthens wood
The general designation on floor and solid wooden compound floor) trend that Wood Flooring Industry develops will be become.With the rapid development of our country's economy and
The continuous improvement of Urbanization Rate, quality is stable, environmental protection grade is high, meets differentiated demand and the fibre with safe flame retarding function
Dimension panel products have a vast market space.Therefore, the present invention produces a kind of high moisture-proof medium density fiber timber floor and has very
Good development prospect is that one kind can be to the effective way that timber is comprehensively utilized.
Summary of the invention
The object of the present invention is to provide a kind of production method of high moisture-proof medium density fiber timber floor, this method utilizes eucalyptus
Discarded leftover pieces remained by ebon skin, branch and manufacture plate are raw material, are turned waste into wealth, it can be achieved that filling to timber resources
Divide effective use；Modified paraffin and Moisture-proof urea-formaldehyde resin adhesive are added, keeps timber floor humidity resistance obtained good, water resistance
Good, content of formaldehyde is low, and compression strength is high.
The invention is realized by the following technical scheme:
A kind of production method of high moisture-proof medium density fiber timber floor, specific steps are as follows:
(1) pretreatment of raw material: Eucalyptus leftover pieces are uniformly mixed with other weedtrees according to weight ratio 1:02~0.3, growth is cut
Degree is less than 5cm, width is less than the fragment of 1cm；
The Eucalyptus leftover pieces refer to discarded leftover pieces remained by the eucalyptus bark, branch and manufacture plate of eucalyptus, make
15~20 days (timing after felling) is first hung with preceding, and avoids mouldy, generation blackspot, it is easy by the wood waste of stacking
Crushing, wood shavings pick-up rate are high；Other described weedtrees include linden, birch, Manchurian ash, beech, color wood, willow Eucalyptus et al.
Make the common timber of plate.
(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 10~30min, it is then logical to cooker
Enter steam, holding pressure inside the tank is 0.16~0.2Mpa, 1~4min of boiling, and the cork that water content is 70~85% is obtained after boiling
Piece；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, mill
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
6~8min 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 and Moisture-proof urea-formaldehyde resin adhesive are passed through hot wind and are dried, and pipeline intake air temperature is 155~165 DEG C, discharging
Mouth temperature is 65~75 DEG C, finally passes through cyclone separator or venturi separator, obtains the fiber that moisture content is 7~10%, defeated
It is fed into feed bin storage；Exhaust steam is used to heat the water in cooker through over-heat-exchanger；Dried fiber moisture needs tight
Lattice control, moisture content is low, and the slab after precompressed is easy to crack in cutting edge, truncation, and moisture content Gao Ze is explosive in precompressed slab.
The straying quatity of the modified paraffin and Moisture-proof urea-formaldehyde resin adhesive are as follows: every cubic metre of wood shavings application 5~
10kg modified paraffin and 165~190kg Moisture-proof urea-formaldehyde resin adhesive.
(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 0.3~0.4Mpa；
(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 250~260 DEG C,
100~150s is suppressed under the conditions of 0.8~0.9Mpa, and 20~50s is suppressed under the conditions of 0.4~0.6Mpa, obtains hot pressing
Plate, temperature is 190~220 DEG C after hot pressing；
(8) cooling, saw sanction, sanding: heating platen is rapidly cooled 3~8min with cold wind, places 48~60h, carries out after ageing
Saw is cut out, two sides sanding is to get medium density fibre board (MDF)；
Medium density fiber 9~the 12cm of plate thickness, 0.6~0.8g/cm of density3, moisture content 7~9%.
(9) gluing, veneer hot pressing: select medium density fibre board (MDF) smooth, in homogeneous thickness as substrate layer, in plate surface
Apply one layer of uniform Moisture-proof urea-formaldehyde resin adhesive；One layer of decorative layer is sticked on surface on it, puts one layer of three oxygen in decorative layer again
Change two aluminium abrasion-proof papers, carries out hot pressing into hot press, hot pressing pressure is 1.8~2.5MPa, and hot pressing temperature is 130~135 DEG C, heat
The pressure time is 10~15min, obtains floor blank；
(10) health, fluting: floor blank is placed in the balance health-preserving storehouse of constant temperature and humidity, stands health 15~20 days, then
By fluting apparatus excision forming to get finished product.
The modified paraffin is prepared from the following raw materials in parts by weight: 100~150 parts of paraffin, dodecyl phenol 10
~20 parts, 5~10 parts of vegetable oil acid, 20~50 parts of paraformaldehyde, 5~10 parts of sodium carboxymethylcellulose, 6~9 parts of calcium stearate,
5~15 parts of rosin acid, 5~10 parts of chitosan；The vegetable oil acid be eleostearic acid, linolenic acid, behenic acid kind one kind or
Two kinds of combinations；The chitosan is the chitosan of 5000~100000 molecular weight.
Usually can all be added paraffin in Fibreboard Production at present, no matter in (height) density fiber board, hard fibre
In plate production, often due to addition solid paraffin or increasing paraffin dosage and influencing other physical and mechanical properties of product, especially
It is the bond strength for reducing product；Simultaneously because the performances such as the electric conductivity of paraffin, tensile strength, binding force are lower, it is added to fibre
Its suction-operated is weaker in dimension or wood chip, thus also tends to unevenly in the distribution of fibreboard surface；In addition, with petroleum resources
Reduction and international crude oil price it is continuous soaring, the price of solid paraffin is also rising steadily, and just increases fiberboard therewith
Production cost.Modified paraffin used in the present invention belongs to macromolecule reaction type water repellent agent, can pass through electrostatic attraction and macromolecule
Winding effect and fiber carry out efficiently firm combine and achieve the purpose that be glued water resistant, are lower-cost high-efficiency fiber plate waterproofs
Agent.
The Moisture-proof urea-formaldehyde resin adhesive is prepared from the following raw materials in parts by weight: para-aminophenol modified urea-formaldehyde tree
50~60 parts of rouge, 5~10 parts of white glue with vinyl, 1~3 part of formaldehyde catching agent, 3~5 parts of anti-blushing agent, 10~15 parts of filler；The first
Aldehyde agent for capturing is made of two or more in ethyl acetoacetate, styrene, polyvinyl alcohol, thiocarbamide；Described is anti-
Damp agent is EVA latex；The filler is any one of talcum powder, wood powder, flour or their combination.
The molar ratio of formaldehyde and urea is 1:1.2 in the para-aminophenol modified urea-formaldehyde resin, para-aminophenol
Dosage is the 4% of urea total weight, and urea feeds intake in four batches, and the ratio that urea is added portionwise is 50:25:15:10.
The para-aminophenol modified urea-formaldehyde resin the preparation method comprises the following steps: by formaldehyde be added reactor in, be warming up to 40
~45 DEG C, sodium hydroxide solution tune pH to 5.0~5.5 is added dropwise, first urea is added, 80~90 DEG C are to slowly warm up to, at this
At a temperature of react 25~35min；With sodium hydroxide solution tune pH to 8.5~9.0, second batch urea and para-aminophenol is added,
30~40min of isothermal reaction；With ammonium chloride solution tune pH to 5.0~5.5, it is added third batch urea, isothermal reaction 30~
40min；The 4th crowd of 30~40min of urea reaction, adding sodium hydroxide solution is added in adding sodium hydroxide solution tune pH to 8.5~9.0
PH to 7.4~7.6 is adjusted, is cooled to 40 DEG C or less blowings, obtained viscous solution is para-aminophenol modified urea-formaldehyde resin；Institute
The concentration for stating formaldehyde is 37~40%, and the mass fraction of the sodium hydroxide solution is 15%, and the mass fraction of the ammonium chloride is
15%。
The Moisture-proof urea-formaldehyde resin adhesive the preparation method comprises the following steps: para-aminophenol modified urea-formaldehyde resin is added to instead
It answers in device, adds white glue with vinyl and stir evenly, formaldehyde catching agent, anti-blushing agent and filler are added while stirring, kept for 80~90 DEG C
30~40min is reacted, room temperature is cooled to, Moisture-proof urea-formaldehyde resin adhesive can be obtained.
Lauxite is also known as urea formaldehyde resin, and english abbreviation UF is urea and formaldehyde in catalyst (alkalinity or acidic catalyst
Agent) under effect, it is polycondensed into initial stage Lauxite, then again under curing agent or promoter effect, forms insoluble, insoluble latter stage heat
Thermosetting resin.Lauxite color after solidification is more shallow than phenolic resin, and be translucent shape, weak acid resistant, weak base, good insulation preformance,
Wearability is splendid, cheap, it is the maximum kind of dosage in adhesive.Especially in the various wood-based plates of wood-processing industry
In manufacture, Lauxite and its modified product account for 90% or so of the total dosage of adhesive.The present invention is using para-aminophenol to amino
Phenol modifying agent the most, obtained para-aminophenol modified urea-formaldehyde resin have good waterproof and dampproof performance, and free formaldehyde contains
It measures low.
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.
White glue with vinyl is a kind of water soluble adhesive, be by vinyl acetate monomer initiator effect under it is aggregated reaction and make
A kind of thermoplastic adhesives obtained, commonly referred to as white glue with vinyl or abbreviation PVAC lotion, chemical name is Polyvinyl acetate adhesive.
White glue with vinyl due to high with good film-forming property, adhesion strength, curing rate is fast, diluted alkaline good, the easy to use, price of resistance to diluted acid just
Preferably, the features such as being free of organic solvent, is widely used in the industries such as timber, furniture, finishing, printing, weaving, leather, papermaking.
Polyvinyl alcohol (polyvinyl alcohol,vinylalcohol polymer), white plates, cotton-shaped or powder
Shape solid, it is tasteless, be dissolved in water (95 DEG C or more), be slightly soluble in dimethyl sulfoxide, insoluble in gasoline, kerosene, vegetable oil, benzene, toluene,
Dichloroethanes, carbon tetrachloride, acetone, ethyl acetate, methanol, ethylene glycol etc..It can be used for manufacturing Pioloform, polyvinyl acetal, resistance to gasoline pipe
Road and vinylon synthetic fibers, fabric-treating agent, emulsifier, paper coating, adhesive, glue etc..Applied in Lauxite
The extra free formaldehyde of absorbable release, reduces the free formaldehyde content in Lauxite, can also improve the resistance to of Lauxite
Aqueous and adhesion strength.
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.
Talcum powder (Talc) main component is the aqueous magnesium silicate of talcum, molecular formula Mg3[Si4O10](OH)2, talcum powder
With lubricity, anti-stick, helps that stream, fire resistance, acid-resisting, insulating properties, fusing point are high, chemically torpescence, covering power are good, soft
The excellent Wuli-Shili-Renli system approach such as soft, good luster, strong adsorption force, the present invention in mainly as filler.
The beneficial effects of the present invention are:
1, the production method of the moisture-proof medium density fiber timber floor of height of the present invention, utilizes eucalyptus bark, branch and system
Making discarded leftover pieces remained by plate is primary raw material, adds pine, linden, birch, Manchurian ash, beech, color wood, Liu An
The weedtrees such as wood are turned waste into wealth, it can be achieved that making effective use of to timber resources, addition modified paraffin and moisture-proof urea-formaldehyde resin adhesive
Glutinous agent, production obtain medium density fibre board (MDF) and are further processed into timber floor；The timber floor waterproof performance is good, and intensity is high, toughness
It is good, moreover it is possible to improve the utilization rate of timber, timber utilization rate of the invention is 2.5~3 times of traditional mask-making technology, the wood ground of preparation
Plate quality product rate is more than 90%.
2, the molar ratio of the production method of the moisture-proof medium density fiber timber floor of height of the present invention, formaldehyde and urea is
1:1.2, the use method that formaldehyde is added secondary in four batches, makes formaldehyde fully reacting, the residual quantity in Lauxite is low；Using pair
Amino-phenol para-aminophenol modifying agent the most, obtained para-aminophenol modified urea-formaldehyde resin have good waterproof and dampproof property
Can, while reducing its free formaldehyde content.Moisture-proof urea-formaldehyde resin adhesive prepared by the present invention, through detecting, free formaldehyde contains
Amount is 0.15~0.18%, is met in GB/T 14732 " timber industry adhesive ureaformaldehyde, phenolic aldehyde, melamine resin "
≤ 0.3% standard requirements, glue-joint strength is high, its water resistance of timber floor obtained significantly improves, and burst size of methanal is low, meets
E1 grades of requirements in GB/T 18580 " Form aldehyde release is limited the quantity in indoor decorating and refurnishing materials wood-based plate and its product " standard.
3, 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 the water-fast weatherability and compressive property of Special board for cabinet.
4, the production method of the moisture-proof medium density fiber timber floor of height of the present invention, timber using it is preceding first hang 15~
20 days (timing after felling) avoids mouldy, generation blackspot, and the wood waste by stacking easily crushes, and wood shavings obtains
Yield is high；The good boiling degree of strict control, the straying quatity of modified paraffin and Moisture-proof urea-formaldehyde resin adhesive when boiling wood shavings
Stringent control is also passed through, in order to avoid influence the quality of production board.It is moisture-proof according to medium density fiber timber floor made from strict technology
Excellent performance, water-tolerant, content of formaldehyde is low, and intensity is high, and good toughness is safe and environment-friendly, beautiful, wear-resisting practical timber floor.
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 high moisture-proof medium density fiber timber floor, specific steps are as follows:
(1) pretreatment of raw material: Eucalyptus leftover pieces are uniformly mixed with other weedtrees according to weight ratio 1:0.2, it is small to cut into length
It is less than the fragment of 1cm in 5cm, width；
The Eucalyptus leftover pieces be eucalyptus bark, branch and manufacture plate remained by discarded leftover pieces；The weedtree
For birch and beech, 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
Iron is removed by strong magnetic inspiration row；
(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 0.2Mpa, boiling 1min, and the cork sheet that water content is 70% is obtained after boiling；
(4) grind: the cork sheet that boiling is obtained is transported to refiner and grinds, revolving speed 2500r/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 and Moisture-proof urea-formaldehyde resin adhesive are passed through hot wind and are dried, and pipeline intake air temperature is 155 DEG C, discharge port temperature
Degree is 65 DEG C, finally passes through cyclone separator or venturi separator, obtains the fiber that moisture content is 10%, delivers into feed bin
Storage；Exhaust steam is used to heat the water in cooker through over-heat-exchanger；
The straying quatity of the modified paraffin and Moisture-proof urea-formaldehyde resin adhesive are as follows: it is modified that every cubic metre of wood shavings applies 5kg
Paraffin and 165kg Moisture-proof urea-formaldehyde resin adhesive.
(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 0.4Mpa；
(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 250 DEG C,
100s is suppressed under the conditions of 0.9Mpa, 20s is suppressed under the conditions of 0.6Mpa, obtains heating platen, and temperature is 190 DEG C after hot pressing；
(8) cooling, saw sanction, sanding: heating platen is rapidly cooled 3min with cold wind, places 48h, carries out saw sanction, two after ageing
Facing sand light is to get medium density fibre board (MDF)；
Medium density fiber the plate thickness 9cm, density 0.6g/cm3, moisture content 9%.
(9) gluing, veneer hot pressing: select medium density fibre board (MDF) smooth, in homogeneous thickness as substrate layer, in plate surface
Apply one layer of uniform Moisture-proof urea-formaldehyde resin adhesive；One layer of decorative layer is sticked on surface on it, puts one layer of three oxygen in decorative layer again
Change two aluminium abrasion-proof papers, carries out hot pressing, hot pressing pressure 1.8MPa into hot press, hot pressing temperature is 130 DEG C, and hot pressing time is
15min obtains floor blank；
(10) health, fluting: floor blank is placed in the balance health-preserving storehouse of constant temperature and humidity, is stood health 20 days, is then passed through
Fluting apparatus excision forming is to get finished product.
The modified paraffin is prepared from the following raw materials in parts by weight: 100 parts of paraffin, 10 parts of dodecyl phenol, being planted
5 parts and 20~50 parts of paraformaldehyde of object oleic acid, 10 parts of sodium carboxymethylcellulose, 6 parts of calcium stearate, 5 parts of rosin acid, chitosan 5
Part；The vegetable oil acid is eleostearic acid；The chitosan is the chitosan of 5000 molecular weight.
The Moisture-proof urea-formaldehyde resin adhesive is prepared from the following raw materials in parts by weight: para-aminophenol modified urea-formaldehyde tree
50 parts of rouge, 5 parts of white glue with vinyl, 1 part of formaldehyde catching agent, 3 parts of anti-blushing agent, 10 parts of filler；The formaldehyde catching agent is by acetoacetate
Ethyl ester and polyvinyl alcohol composition；The anti-blushing agent is EVA latex；The filler is talcum powder.
The molar ratio of formaldehyde and urea is 1:1.2 in the para-aminophenol modified urea-formaldehyde resin, para-aminophenol
Dosage is the 4% of urea total weight, and urea feeds intake in four batches, and the ratio that urea is added portionwise is 50:25:15:10.
The para-aminophenol modified urea-formaldehyde resin the preparation method comprises the following steps: by formaldehyde be added reactor in, be warming up to 40
DEG C, sodium hydroxide solution tune pH to 5.5 is added dropwise, first urea is added, is to slowly warm up to 80 DEG C, reacts at such a temperature
35min；With sodium hydroxide solution tune pH to 9.0, second batch urea and para-aminophenol, isothermal reaction 30min is added；Use chlorination
Third batch urea, isothermal reaction 30min is added in ammonium salt solution tune pH to 5.5；Adding sodium hydroxide solution tune pH to 9.0 is added the 4th
Urea reaction 30min, adding sodium hydroxide solution tune pH to 7.4 are criticized, is cooled to 40 DEG C or less blowings, obtained viscous solution is
Para-aminophenol modified urea-formaldehyde resin；The concentration of the formaldehyde is 40%, and the mass fraction of the sodium hydroxide solution is 15%, institute
The mass fraction for stating ammonium chloride is 15%.
The Moisture-proof urea-formaldehyde resin adhesive the preparation method comprises the following steps: para-aminophenol modified urea-formaldehyde resin is added to instead
It answers in device, adds white glue with vinyl and stir evenly, formaldehyde catching agent, anti-blushing agent and filler are added while stirring, keep 80 DEG C of reactions
40min is cooled to room temperature, and Moisture-proof urea-formaldehyde resin adhesive can be obtained.
Embodiment 2
A kind of production method of high moisture-proof medium density fiber timber floor, specific steps are as follows:
(1) pretreatment of raw material: Eucalyptus leftover pieces are uniformly mixed with other weedtrees according to weight ratio 1:0.25, it is small to cut into length
It is less than the fragment of 1cm in 5cm, 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 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
Iron is removed by strong magnetic inspiration row；
(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 2min, 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 7min, 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 and Moisture-proof urea-formaldehyde resin adhesive are passed through hot wind and are dried, and pipeline intake air temperature is 160 DEG C, discharge port temperature
Degree is 70 DEG C, finally passes through cyclone separator or venturi separator, obtains the fiber that moisture content is 8%, delivers into feed bin storage
It deposits；Exhaust steam is used to heat the water in cooker through over-heat-exchanger；
The straying quatity of the modified paraffin and Moisture-proof urea-formaldehyde resin adhesive are as follows: it is modified that every cubic metre of wood shavings applies 8kg
Paraffin and 180kg Moisture-proof urea-formaldehyde resin adhesive.
(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 0.35Mpa；
(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,
120s is suppressed under the conditions of 0.85Mpa, 30s is suppressed under the conditions of 0.5Mpa, obtains heating platen, and temperature is 200 DEG C after hot pressing；
(8) cooling, saw sanction, sanding: heating platen is rapidly cooled 5min with cold wind, places 50h, carries out saw sanction, two after ageing
Facing sand light is to get medium density fibre board (MDF)；
Medium density fiber the plate thickness 10cm, density 0.7g/cm3, moisture content 8%.
(9) gluing, veneer hot pressing: select medium density fibre board (MDF) smooth, in homogeneous thickness as substrate layer, in plate surface
Apply one layer of uniform Moisture-proof urea-formaldehyde resin adhesive；One layer of decorative layer is sticked on surface on it, puts one layer of three oxygen in decorative layer again
Change two aluminium abrasion-proof papers, carries out hot pressing, hot pressing pressure 2.2MPa into hot press, hot pressing temperature is 130 DEG C, and hot pressing time is
12min obtains floor blank；
(10) health, fluting: floor blank is placed in the balance health-preserving storehouse of constant temperature and humidity, is stood health 18 days, is then passed through
Fluting apparatus excision forming is to get finished product.
The modified paraffin is prepared from the following raw materials in parts by weight: 120 parts of paraffin, 15 parts of dodecyl phenol, being planted
8 parts of object oleic acid, 30 parts of paraformaldehyde, 5 parts of sodium carboxymethylcellulose, 8 parts of calcium stearate, 10 parts of rosin acid, 8 parts of chitosan；Institute
The vegetable oil acid stated is linolenic acid；The chitosan is the chitosan of 100000 molecular weight.
The Moisture-proof urea-formaldehyde resin adhesive is prepared from the following raw materials in parts by weight: para-aminophenol modified urea-formaldehyde tree
55 parts of rouge, 8 parts of white glue with vinyl, 2 parts of formaldehyde catching agent, 4 parts of anti-blushing agent, 12 parts of filler；The formaldehyde catching agent by styrene and
It is formed in thiocarbamide；The anti-blushing agent is EVA latex；The filler is that wood powder and flour combine.
The molar ratio of formaldehyde and urea is 1:1.2 in the para-aminophenol modified urea-formaldehyde resin, para-aminophenol
Dosage is the 4% of urea total weight, and urea feeds intake in four batches, and the ratio that urea is added portionwise is 50:25:15:10.
The para-aminophenol modified urea-formaldehyde resin the preparation method comprises the following steps: by formaldehyde be added reactor in, be warming up to 42
DEG C, sodium hydroxide solution tune pH to 5.2 is added dropwise, first urea is added, is to slowly warm up to 85 DEG C, reacts at such a temperature
30min；With sodium hydroxide solution tune pH to 8.8, second batch urea and para-aminophenol, isothermal reaction 35min is added；Use chlorination
Third batch urea, isothermal reaction 35min is added in ammonium salt solution tune pH to 5.2；Adding sodium hydroxide solution tune pH to 8.8 is added the 4th
Urea reaction 35min, adding sodium hydroxide solution tune pH to 7.5 are criticized, is cooled to 40 DEG C or less blowings, obtained viscous solution is
Para-aminophenol modified urea-formaldehyde resin；The concentration of the formaldehyde is 38%, and the mass fraction of the sodium hydroxide solution is 15%, institute
The mass fraction for stating ammonium chloride is 15%.
The Moisture-proof urea-formaldehyde resin adhesive the preparation method comprises the following steps: para-aminophenol modified urea-formaldehyde resin is added to instead
It answers in device, adds white glue with vinyl and stir evenly, formaldehyde catching agent, anti-blushing agent and filler are added while stirring, keep 85 DEG C of reactions
35min is cooled to room temperature, and Moisture-proof urea-formaldehyde resin adhesive can be obtained.
Embodiment 3
A kind of production method of high moisture-proof medium density fiber timber floor, specific steps are as follows:
(1) pretreatment of raw material: Eucalyptus leftover pieces are uniformly mixed with other weedtrees according to weight ratio 1:0.3, it is small to cut into length
It is less than the fragment of 1cm in 5cm, width；
The Eucalyptus leftover pieces be eucalyptus bark, branch and manufacture plate remained by discarded leftover pieces；The weedtree
For Manchurian ash, beech 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
Iron is removed by strong magnetic inspiration row；
(3) boiling softens: wood shavings being transported in cooker, adds suitable quantity of water to impregnate 10min, is then passed through steaming to cooker
Vapour, holding pressure inside the tank are 0.16Mpa, boiling 4min, 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 6min, 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 and Moisture-proof urea-formaldehyde resin adhesive are passed through hot wind and are dried, and pipeline intake air temperature is 165 DEG C, discharge port temperature
Degree is 75 DEG C, finally passes through cyclone separator or venturi separator, obtains the fiber that moisture content is 7%, delivers into feed bin storage
It deposits；Exhaust steam is used to heat the water in cooker through over-heat-exchanger；
The straying quatity of the modified paraffin and Moisture-proof urea-formaldehyde resin adhesive are as follows: it is modified that every cubic metre of wood shavings applies 10kg
Paraffin and 190kg Moisture-proof urea-formaldehyde resin adhesive.
(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 0.3Mpa；
(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 0.8Mpa, 50s is suppressed under the conditions of 0.4Mpa, obtains heating platen, and temperature is 220 DEG C after hot pressing；
(8) cooling, saw sanction, sanding: heating platen is rapidly cooled 8min with cold wind, places 60h, carries out saw sanction, two after ageing
Facing sand light is to get medium density fibre board (MDF)；
Medium density fiber the plate thickness 12cm, density 0.8g/cm3, moisture content 7%.
(9) gluing, veneer hot pressing: select medium density fibre board (MDF) smooth, in homogeneous thickness as substrate layer, in plate surface
Apply one layer of uniform Moisture-proof urea-formaldehyde resin adhesive；One layer of decorative layer is sticked on surface on it, puts one layer of three oxygen in decorative layer again
Change two aluminium abrasion-proof papers, carries out hot pressing, hot pressing pressure 2.5MPa into hot press, hot pressing temperature is 135 DEG C, and hot pressing time is
10min obtains floor blank；
(10) health, fluting: floor blank is placed in the balance health-preserving storehouse of constant temperature and humidity, is stood health 20 days, is then passed through
Fluting apparatus excision forming is to get finished product.
The modified paraffin is prepared from the following raw materials in parts by weight: 150 parts of paraffin, 20 parts of dodecyl phenol, being planted
10 parts of object oleic acid, 50 parts of paraformaldehyde, 8 parts of sodium carboxymethylcellulose, 9 parts of calcium stearate, 15 parts of rosin acid, 10 parts of chitosan；
The vegetable oil acid is one or two kinds of combinations of eleostearic acid, linolenic acid, behenic acid kind；The chitosan is 100000
The chitosan of molecular weight.
The Moisture-proof urea-formaldehyde resin adhesive is prepared from the following raw materials in parts by weight: para-aminophenol modified urea-formaldehyde tree
60 parts of rouge, 10 parts of white glue with vinyl, 3 parts of formaldehyde catching agent, 5 parts of anti-blushing agent, 15 parts of filler；The formaldehyde catching agent by styrene,
Polyvinyl alcohol and thiocarbamide composition；The anti-blushing agent is EVA latex；The filler is flour.
The molar ratio of formaldehyde and urea is 1:1.2 in the para-aminophenol modified urea-formaldehyde resin, para-aminophenol
Dosage is the 4% of urea total weight, and urea feeds intake in four batches, and the ratio that urea is added portionwise is 50:25:15:10.
The para-aminophenol modified urea-formaldehyde resin the preparation method comprises the following steps: by formaldehyde be added reactor in, be warming up to 45
DEG C, sodium hydroxide solution tune pH to 5.0 is added dropwise, first urea is added, is to slowly warm up to 90 DEG C, reacts at such a temperature
25min；With sodium hydroxide solution tune pH to 8.5, second batch urea and para-aminophenol, isothermal reaction 40min is added；Use chlorination
Third batch urea, isothermal reaction 40min is added in ammonium salt solution tune pH to 5.0；Adding sodium hydroxide solution tune pH to 8.5 is added the 4th
Urea reaction 40min, adding sodium hydroxide solution tune pH to 7.6 are criticized, is cooled to 40 DEG C or less blowings, obtained viscous solution is
Para-aminophenol modified urea-formaldehyde resin；The concentration of the formaldehyde is 40%, and the mass fraction of the sodium hydroxide solution is 15%, institute
The mass fraction for stating ammonium chloride is 15%.
The Moisture-proof urea-formaldehyde resin adhesive the preparation method comprises the following steps: para-aminophenol modified urea-formaldehyde resin is added to instead
It answers in device, adds white glue with vinyl and stir evenly, formaldehyde catching agent, anti-blushing agent and filler are added while stirring, keep 90 DEG C of reactions
30min is cooled to room temperature, and Moisture-proof urea-formaldehyde resin adhesive can be obtained.
Application Example
1, Hengxian County's wood-based plate Co., Ltd produces medium density fiber timber floor using the method in the embodiment of the present invention,
It is detected, trial production does not have the phenomenon that rubber granule is with being layered over the past half year, in plate layer, sand trace occurs and sand leakage phenomenon is insufficient
1%, the high-class product produced is up to 93% or more.
Quality measurements are as follows:
| Burst size of methanal (mg/100g) | Bonding strength (MPa) | Expansion rate of water absorption (%) | |
| Embodiment 1 | 4.5 | 1.82 | 5.1 |
| Embodiment 2 | 4.8 | 1.88 | 4.6 |
| Embodiment 3 | 5.1 | 1.84 | 4.3 |
| Standard requirements | E1≤9.0 | ≥0.7 | ≤10 |
Claims (8)
1. a kind of production method of high moisture-proof medium density fiber timber floor, 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 1:0.2~0.3, growth is cut
Degree is less than 5cm, width is less than the fragment of 1cm；
(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 10~30min, it is then logical to cooker
Enter steam, holding pressure inside the tank is 0.16~0.2Mpa, 1~4min of boiling, and the cork that water content is 70~85% is obtained after boiling
Piece；
(4) grind: the cork sheet that boiling is obtained is transported to refiner and grinds, 2500~3000r/min of revolving speed, grinding 6
~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 and Moisture-proof urea-formaldehyde resin adhesive are passed through hot wind and are dried, and pipeline intake air temperature is 155~165 DEG C, discharging
Mouth temperature is 65~75 DEG C, finally passes through cyclone separator or venturi separator, obtains the fiber that moisture content is 7~10%, defeated
It is fed 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 0.3~0.4Mpa；
(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 250~260 DEG C,
100~150s is suppressed under the conditions of 0.8~0.9Mpa, and 20~50s is suppressed under the conditions of 0.4~0.6Mpa, obtains hot pressing
Plate, temperature is 190~220 DEG C after hot pressing；
(8) cooling, saw sanction, sanding: heating platen is rapidly cooled 3~8min with cold wind, places 48~60h, carries out after ageing
Saw is cut out, two sides sanding is to get medium density fibre board (MDF)；
(9) gluing, veneer hot pressing: selecting medium density fibre board (MDF) smooth, in homogeneous thickness as substrate layer, applies one in plate surface
The uniform Moisture-proof urea-formaldehyde resin adhesive of layer；One layer of decorative layer is sticked on surface on it, puts one layer of three oxidation two in decorative layer again
Aluminium abrasion-proof paper carries out hot pressing into hot press, and hot pressing pressure is 1.8~2.5MPa, and hot pressing temperature is 130~135 DEG C, when hot pressing
Between be 10~15min, obtain floor blank；
(10) health, fluting: floor blank is placed in the balance health-preserving storehouse of constant temperature and humidity, stands health 15~20 days, then
By fluting apparatus excision forming to get finished product.
2. the production method of the moisture-proof medium density fiber timber floor of height according to claim 1, it is characterised in that: step
(5) straying quatity of modified paraffin and Moisture-proof urea-formaldehyde resin adhesive described in are as follows: every cubic metre of wood shavings applies 5~10kg and changes
Property paraffin and 165~190kg Moisture-proof urea-formaldehyde resin adhesive.
3. the production method of the moisture-proof medium density fiber timber floor of height according to claim 1, it is characterised in that: step
(8) medium density fiber 9~12cm of plate thickness, 0.6~0.8g/cm of density described in3, moisture content 7~9%.
4. the production method of the moisture-proof medium density fiber timber floor of height according to claim 1, it is characterised in that: described
Modified paraffin is prepared from the following raw materials in parts by weight: 100~150 parts of paraffin, 10~20 parts of dodecyl phenol, and vegetable oil acid
5~10 parts, 20~50 parts of paraformaldehyde, 5~10 parts of sodium carboxymethylcellulose, 6~9 parts of calcium stearate, 5~15 parts of rosin acid,
5~10 parts of chitosan；The vegetable oil acid is one or two kinds of combinations of eleostearic acid, linolenic acid, behenic acid kind；Described
Chitosan is the chitosan of 5000~100000 molecular weight.
5. the production method of the moisture-proof medium density fiber timber floor of height according to claim 1, it is characterised in that: described
Moisture-proof urea-formaldehyde resin adhesive is prepared from the following raw materials in parts by weight: 50~60 parts of para-aminophenol modified urea-formaldehyde resin, white
5~10 parts of latex, 1~3 part of formaldehyde catching agent, 3~5 parts of anti-blushing agent, 10~15 parts of filler；The formaldehyde catching agent is by acetyl
Ethyl acetate, styrene, polyvinyl alcohol, the two or more composition in thiocarbamide；The anti-blushing agent is EVA latex；
The filler is any one of talcum powder, wood powder, flour or their combination.
6. the production method of the moisture-proof medium density fiber timber floor of height according to claim 5, it is characterised in that: described
The molar ratio of formaldehyde and urea is 1:1.2 in para-aminophenol modified urea-formaldehyde resin, and the dosage of para-aminophenol is urea gross weight
The 4% of amount, urea feeds intake in four batches, and the ratio that urea is added portionwise is 50:25:15:10.
7. the production method of the moisture-proof medium density fiber timber floor of height according to claim 5, it is characterised in that: described
Para-aminophenol modified urea-formaldehyde resin the preparation method comprises the following steps: formaldehyde is added in reactor, be warming up to 40~45 DEG C, hydrogen-oxygen be added dropwise
Change sodium solution tune pH to 5.0~5.5, first urea is added, is to slowly warm up to 80~90 DEG C, at such a temperature react 25~
35min；With sodium hydroxide solution tune pH to 8.5~9.0, addition second batch urea and para-aminophenol, isothermal reaction 30~
40min；With ammonium chloride solution tune pH to 5.0~5.5, third batch urea, 30~40min of isothermal reaction is added；Adding sodium hydroxide
The 4th crowd of 30~40min of urea reaction, adding sodium hydroxide solution tune pH to 7.4~7.6 is added in solution tune pH to 8.5~9.0,
40 DEG C or less blowings are cooled to, obtained viscous solution is para-aminophenol modified urea-formaldehyde resin；The concentration of the formaldehyde is
37~40%, the mass fraction of the sodium hydroxide solution is 15%, and the mass fraction of the ammonium chloride is 15%.
8. the production method of the moisture-proof medium density fiber timber floor of height according to claim 5, it is characterised in that: described
Moisture-proof urea-formaldehyde resin adhesive the preparation method comprises the following steps: para-aminophenol modified urea-formaldehyde resin is added in reactor, add
White glue with vinyl stirs evenly, and formaldehyde catching agent, anti-blushing agent and filler are added while stirring, keeps 80~90 DEG C of 30~40min of reaction,
It is cooled to room temperature, Moisture-proof urea-formaldehyde resin adhesive can be obtained.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109822701A (en) * | 2019-03-08 | 2019-05-31 | 李振洋 | A kind of preparation method of moistureproof and mildewproof medium density fibre board (MDF) |
| CN111109859A (en) * | 2019-12-20 | 2020-05-08 | 肇庆市现代筑美家居有限公司 | Practice thrift extensible formula dining table in space |
| CN111958747A (en) * | 2020-08-19 | 2020-11-20 | 陈乃峰 | Manufacturing process of panel and bottom plate of seven-stringed plucked instrument |
| CN112223471A (en) * | 2020-10-31 | 2021-01-15 | 商丘市鼎盛木业有限公司 | Preparation process of artificial board |
| CN112920676A (en) * | 2021-01-22 | 2021-06-08 | 冯洺章 | Method for simultaneously forming paint film and printing color pattern on woodware |
| CN112980209A (en) * | 2021-04-22 | 2021-06-18 | 湖南省杨林木业有限公司 | Antibacterial and mildew-proof wood veneer and preparation method thereof |
| CN114729197A (en) * | 2019-10-11 | 2022-07-08 | 爱福特立 | Method for manufacturing a composite material based on lignocellulose fibres and composite material obtained by such a method |
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2018
- 2018-11-07 CN CN201811319363.6A patent/CN109291167A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109822701A (en) * | 2019-03-08 | 2019-05-31 | 李振洋 | A kind of preparation method of moistureproof and mildewproof medium density fibre board (MDF) |
| CN114729197A (en) * | 2019-10-11 | 2022-07-08 | 爱福特立 | Method for manufacturing a composite material based on lignocellulose fibres and composite material obtained by such a method |
| CN111109859A (en) * | 2019-12-20 | 2020-05-08 | 肇庆市现代筑美家居有限公司 | Practice thrift extensible formula dining table in space |
| CN111958747A (en) * | 2020-08-19 | 2020-11-20 | 陈乃峰 | Manufacturing process of panel and bottom plate of seven-stringed plucked instrument |
| CN112223471A (en) * | 2020-10-31 | 2021-01-15 | 商丘市鼎盛木业有限公司 | Preparation process of artificial board |
| CN112920676A (en) * | 2021-01-22 | 2021-06-08 | 冯洺章 | Method for simultaneously forming paint film and printing color pattern on woodware |
| CN112980209A (en) * | 2021-04-22 | 2021-06-18 | 湖南省杨林木业有限公司 | Antibacterial and mildew-proof wood veneer and preparation method thereof |
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Application publication date: 20190201 |