CN105666632B - A kind of manufacture method of antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF) - Google Patents

A kind of manufacture method of antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF) Download PDF

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CN105666632B
CN105666632B CN201610048542.5A CN201610048542A CN105666632B CN 105666632 B CN105666632 B CN 105666632B CN 201610048542 A CN201610048542 A CN 201610048542A CN 105666632 B CN105666632 B CN 105666632B
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mdf
medium density
manufacture method
corrosion protection
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CN105666632A (en
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李吉冉
米扬
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Xinyi Daziran Wood Industry Co Ltd
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Xinyi Daziran Wood Industry Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
    • 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
    • B27K3/02—Processes; Apparatus
    • B27K3/0228—Spraying apparatus, e.g. tunnels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/10—Moulding of mats
    • B27N3/12—Moulding of mats from fibres
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
    • C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C09J161/32—Modified amine-aldehyde condensates
    • 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
    • B27K2200/00—Wooden materials to be treated
    • B27K2200/15—Pretreated particles or fibres
    • 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)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

The present invention provides a kind of antitheft door door-plate manufacture method of environment friendly corrosion protection medium density fibre board (MDF), comprises the following steps：1) stock up；2) feed stock chip；3) boiling softens；4) water-proof emulsion is prepared；5) defibrator process；6) it is glued；7) dry；8) mat formation, precompressed；9) hot pressing；10) cutting edge, sanding, storage.The medium density fibre board (MDF) made from the manufacture method, tack is good, and intensity is high, and antiseptic property is good, service life length, asepsis environment-protecting.

Description

A kind of manufacture method of antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF)
Technical field
The invention belongs to fiberboard manufacturing technology field, specifically, designs close in a kind of antitheft door door-plate environment friendly corrosion protection Spend the manufacture method of fiberboard.
Background technology
Density board, also referred to as fiberboard, be using wood fibre or other plant fiber as raw material, apply Lauxite or other Artificial board made of applicable adhesive.By the difference of its density, it is divided into high-density plate, medium-density plate, low-density plank.Mainly For laminated flooring, door-plate, partition wall, furniture etc., density board is mainly used in the surface treatment of contaminated product technique in house ornamentation；Typically Make furniture is all medium-density plate, because high-density plate density is too high, it is easy to is ftractureed, so having no idea to make furniture.One As high-density plate be all for do indoor and outdoor decoration, office and Home furniture, sound equipment, vehicle interior decoration, also act as calculating The making material of computer room antistatic floor, skirting, antitheft door, wallboard, dividing plate etc..The good material that it is still packed.Future Even more it is used to make laminated flooring etc. as base material.
Medium density fibre board (MDF) (Medium Density Fiberboard, is abbreviated as MDF, abbreviation MDF), is with wooden Fiber or other plant fiber are raw material, through smashing, fiber separation, dry after-applied Lauxite or other are applicable gluing Agent, then manufactured a kind of artificial board after hot pressing.Its density is typically in 500~880kg/m3, thickness be generally 5~30 milli Rice.
Wherein, urea-formaldehyde resin adhesive used in medium density fibre board (MDF) production is the maximum synthesis tree of China's timber industry dosage Fat adhesive, more than the 60% of wood-processing industry adhesive total flow is accounted for, accounts for 90% or so of wood-based plate glue consumption.Lauxite Adhesive has many advantages, such as, such as higher glue-joint strength, high resistance to cold water performance, medium hot water resistance energy；Solidification is rapid；With Water miscibility is good, easily modulates suitable viscosity and concentration etc.；But the big basic reason of its dosage is price advantage, it is synthesis tree It is cheapest in fat adhesive.However, urea-formaldehyde resin adhesive and its cementitious product can constantly discharge first in using journey Aldehyde, harmful, which greatly limits its use range.It is urea-formaldehyde resin adhesive low toxicity to add modifying agent Change an important directions in research.
On the other hand, the country is primarily present following patent document at present：
Patent publication No.：103509166A, disclose a kind of preparation method of Lauxite, and in particular to a kind of melamine Amine modified urea-formaldehyde resin and preparation method thereof.The present invention is made up of the raw material of following percentage by weight：Formaldehyde 50.1-52.88%, Polyvinyl alcohol 0.52-0.56%, urea 34.78-35.99%, melamine 8.7-9.38%, tapioca 1.77-5.6%； Its preparation method is to put into polyvinyl alcohol in formaldehyde to react, and urea and melamine add in batches, puts into tapioca Reaction, which discharges, to be produced.Present invention process is simple and introduces melamine and polyvinyl alcohol modification, makes modified urea gum resin in gluing Reach the requirement of Scrimber production in ability；Reduce the content of free formaldehyde and unstable knot in resin to greatest extent again simultaneously The presence of structure.The tack that tapioca improves urea gum resin is added, reduces cost.Melamine modified urea is used in the patent Urea formaldehyde, to reduce the content of free formaldehyde in resin, it is well known, however, that because melamine can be brought to child development Harmful effect, therefore bonded in the medium density fibre board (MDF) for family expenses bottom plate using the Lauxite containing tripolycyanamide Agent, although content of formaldehyde reduces, the presence of melamine still influences children's healthy growth.
The content of the invention
To solve above-mentioned problem, it is an object of the invention to provide close in a kind of antitheft door door-plate environment friendly corrosion protection The manufacture method of fiberboard is spent, the medium density fibre board (MDF) made from the manufacture method, tack is good, and intensity is high, antiseptic property It is good, service life length, asepsis environment-protecting.
To reach above-mentioned purpose, the technical scheme is that：
A kind of antitheft door door-plate manufacture method of environment friendly corrosion protection medium density fibre board (MDF), comprises the following steps：
1) stock up
By reed rod and beans bar using weight ratio as 1~2:1 ratio mixing, after cleaning be sent into baking oven to water content be 15~ 20%, obtain compound；
2) feed stock chip
Compound after drying is sent into drum chipper section, the fragment that average length is 5~7cm is obtained, through screening machine Screening, remove fragment, chip and impurity；
3) boiling softens
Compound after section is subjected to boiling under 150~170 DEG C of steam, softens the compound, saturated vapor 1~3MPa of pressure, 5~8min of digestion time；
4) water-proof emulsion is prepared
Paraffin, tristerin are heated to melting, stirred, is warming up to 80~85 DEG C, adds oleic acid, 20% hydroxide Agent solution, after being added dropwise, dropping temperature is 70~80 DEG C of water at 80~90 DEG C, stirs 20~30min, obtains the waterproof Emulsion；
5) defibrator process
Compound after boiling is softened is sent into defibrator, at 170~180 DEG C, defibrator rotating speed 1200~1400 Turn/min, carry out fiber separation, 2~3min of defibrator process time, water-proof emulsion obtained by step 4) is atomized, heat is incorporated with Sprayable Mill discharge pipe, the water-proof emulsion is set to be attached to fiber surface；
6) it is glued
After modified urea-formaldehyde resin glue is sticked into agent and the mixed solution atomization of curing agent, the fiber surface after defibrator process is sprayed at, Stirring, mixing speed 60~70 turns/min, 10~13min of mixing time, it is aged 20~25min, the mixed solution solid content For 8~10%；
7) dry
Fiber obtained by step 6) is sent into drying box to be dried, 120~130 DEG C of drying temperature, drying time 2~ 4min, dry to moisture content 2~3%；
8) mat formation, precompressed
Dried fiber is subjected to shaping of mating formation, slab is pressed into advance under 0.5~1MPa；
9) hot pressing
By slab 2~4min of hot pressing under 2~5MPa obtained by step 8), 180~200 DEG C of hot pressing temperature, pressure be 2~ 4MPa, temperature are 30~60s of hot pressing at 150~180 DEG C；
10) cutting edge, sanding, storage
Gained slab after the completion of hot pressing is cooled to room temperature, through abrasive finishing machine abrasive finishing and stock board is cut into, is put in storage, obtains institute State antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF).
Further, 15~20mm of gained medium density fiber plate thickness, 2~3g/cm of density3, moisture content 2~3%.
In addition, the water-proof emulsion includes the chemical composition of following parts by weight：80~90 parts of paraffin, tristerin 10~ 15 parts, 5~10 parts of oleic acid, 20% 3~6 parts of potassium hydroxide solution, 90~100 parts of water.
Separately have, the water-proof emulsion dosage is the 1~2% of over dry compound weight.
Again, the dosage that modified urea-formaldehyde resin glue described in step 6) sticks agent is the 15~25% of bone dry fiber quality.
Further, the modified resin adhesive includes the chemical composition of following parts by weight：80~90 parts of formaldehyde, urea 50~ 60 parts, 20% 10~15 parts of glass dust, 30~40 parts of acrylate copolymer emulsion, 1~5 part of cornstarch, benzoic acid 10~15 Part, 10~20 parts of phenol.
And the preparation of the modified resin adhesive comprises the following steps：Formalin in formula is added into four mouthfuls of burnings In bottle, pH value is adjusted to add the urea for accounting for urea total amount 45~50%, and add to 8.0~8.5 with 30% sodium hydroxide solution Cornstarch, stirring, 90 DEG C are warming up to, are incubated 30~40min, with first acid for adjusting pH value to 5~6, it is total to account for urea for then addition The urea of amount 35~40% carries out secondary polycondensation, then adds 20% glass dust and acrylate copolymer emulsion, and insulation 20~ After 30min, be cooled to 75 DEG C, react 15~20min, be warming up to 90 DEG C, with 30% sodium hydroxide solution by pH value adjust to 7.5~8.5, benzoic acid, phenol and remaining urea are eventually adding, at 90 DEG C after 30~40min of insulation reaction, vacuum takes off Water, cool discharging, produces the modified urea-formaldehyde resin glue and sticks agent.
In addition, hardener dose described in step 6) is the 1.5~2% of bone dry fiber quality.
Again, the curing agent includes the chemical composition of following parts by weight：10~15 parts of ammonium chloride, 35~40 parts of urea, ammonia 15~25 parts of water, 40~50 parts of water.
Separately have, the volume mass of thermal medium and bone dry fiber ratio is 10~15 in drying box in step 7):1, m3/kg。
The beneficial effects of the present invention are：
Agent is sticked using special modified urea-formaldehyde resin glue, the initial stage of the glutinous agent of the modified urea-formaldehyde resin glue is being synthesized, that is, is adding Enter cornstarch, hydrolysis occurs for starch in building-up process, generates various dextrin etc., due to starch relative molecular mass very Greatly, viscosity is also very big after dissolving, and the larger Lauxite of viscosity, while the hydroxyl on starch molecular chain can be made in addition on a small quantity Base, methylol and because aldehyde radical caused by hydrolysis etc. may participate in the synthetic reaction of Lauxite, not only increase tack, and And adhesive strength and storage stability are also improved；The form coordinated using 20% glass dust and acrylate copolymer emulsion, can Effectively reduce the content that modified urea-formaldehyde resin glue sticks formaldehyde in agent；The water-proof emulsion of caused fiber surface sprinkling after defibrator process, The effectively water resistance of lifting fiber；Using phenol modified urea-formaldehyde resins, benzene ring structure is introduced in resin, encloses resin Absorb water group, and the water resistance and resistance to ag(e)ing for making resin significantly improve.Also resorcinol or melamine can be added curing agent Among component, also acrylate copolymer emulsion and Lauxite blending can be improved water resistance.
Embodiment
A kind of manufacture method of antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF) of the present invention, including following step Suddenly：
1) stock up
By reed rod and beans bar using weight ratio as 1~2:1 ratio mixing, after cleaning be sent into baking oven to water content be 15~ 20%, obtain compound；
2) feed stock chip
Compound after drying is sent into drum chipper section, the fragment that average length is 5~7cm is obtained, through screening machine Screening, remove fragment, chip and impurity；
3) boiling softens
Compound after section is subjected to boiling under 150~170 DEG C of steam, softens the compound, saturated vapor 1~3MPa of pressure, 5~8min of digestion time；
4) water-proof emulsion is prepared
Paraffin, tristerin are heated to melting, stirred, is warming up to 80~85 DEG C, adds oleic acid, 20% hydroxide Agent solution, after being added dropwise, dropping temperature is 70~80 DEG C of water at 80~90 DEG C, stirs 20~30min, obtains the waterproof Emulsion；
5) defibrator process
Compound after boiling is softened is sent into defibrator, at 170~180 DEG C, defibrator rotating speed 1200~1400 Turn/min, carry out fiber separation, 2~3min of defibrator process time, water-proof emulsion obtained by step 4) is atomized, heat is incorporated with Sprayable Mill discharge pipe, the water-proof emulsion is set to be attached to fiber surface；
6) it is glued
After modified urea-formaldehyde resin glue is sticked into agent and the mixed solution atomization of curing agent, the fiber surface after defibrator process is sprayed at, Stirring, mixing speed 60~70 turns/min, 10~13min of mixing time, it is aged 20~25min, the mixed solution solid content For 8~10%；
7) dry
Fiber obtained by step 6) is sent into drying box to be dried, 120~130 DEG C of drying temperature, drying time 2~ 4min, dry to moisture content 2~3%；
8) mat formation, precompressed
Dried fiber is subjected to shaping of mating formation, slab is pressed into advance under 0.5~1MPa；
9) hot pressing
By slab 2~4min of hot pressing under 2~5MPa obtained by step 8), 180~200 DEG C of hot pressing temperature, pressure be 2~ 4MPa, temperature are 30~60s of hot pressing at 150~180 DEG C；
10) cutting edge, sanding, storage
Gained slab after the completion of hot pressing is cooled to room temperature, through abrasive finishing machine abrasive finishing and stock board is cut into, is put in storage, obtains institute State antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF).
Further, 15~20mm of gained medium density fiber plate thickness, 2~3g/cm of density3, moisture content 2~3%.
In addition, the water-proof emulsion includes the chemical composition of following parts by weight：80~90 parts of paraffin, tristerin 10~ 15 parts, 5~10 parts of oleic acid, 20% 3~6 parts of potassium hydroxide solution, 90~100 parts of water.
Separately have, the water-proof emulsion dosage is the 1~2% of over dry compound weight.
Again, the dosage that modified urea-formaldehyde resin glue described in step 6) sticks agent is the 15~25% of bone dry fiber quality.
Further, the modified resin adhesive includes the chemical composition of following parts by weight：80~90 parts of formaldehyde, urea 50~ 60 parts, 20% 10~15 parts of glass dust, 30~40 parts of acrylate copolymer emulsion, 1~5 part of cornstarch, benzoic acid 10~15 Part, 10~20 parts of phenol.
And the preparation of the modified resin adhesive comprises the following steps：Formalin in formula is added into four mouthfuls of burnings In bottle, pH value is adjusted to add the urea for accounting for urea total amount 45~50%, and add to 8.0~8.5 with 30% sodium hydroxide solution Cornstarch, stirring, 90 DEG C are warming up to, are incubated 30~40min, with first acid for adjusting pH value to 5~6, it is total to account for urea for then addition The urea of amount 35~40% carries out secondary polycondensation, then adds 20% glass dust and acrylate copolymer emulsion, and insulation 20~ After 30min, be cooled to 75 DEG C, react 15~20min, be warming up to 90 DEG C, with 30% sodium hydroxide solution by pH value adjust to 7.5~8.5, benzoic acid, phenol and remaining urea are eventually adding, at 90 DEG C after 30~40min of insulation reaction, vacuum takes off Water, cool discharging, produces the modified urea-formaldehyde resin glue and sticks agent.
In addition, hardener dose described in step 6) is the 1.5~2% of bone dry fiber quality.
Again, the curing agent includes the chemical composition of following parts by weight：10~15 parts of ammonium chloride, 35~40 parts of urea, ammonia 15~25 parts of water, 40~50 parts of water.
Separately have, the volume mass of thermal medium and bone dry fiber ratio is 10~15 in drying box in step 7):1, m3/kg。
Wherein, table 1 is a kind of system of antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF) described in various embodiments of the present invention Make water-proof emulsion ingredient lists in method.Table 2 is close in a kind of antitheft door door-plate environment friendly corrosion protection described in various embodiments of the present invention Spend modified urea-formaldehyde resin glue in the manufacture method of fiberboard and stick agent ingredient lists.Table 3 is a kind of anti-described in various embodiments of the present invention Steal door board curing agent component list in the manufacture method of environment friendly corrosion protection medium density fibre board (MDF).Table 4 uses each reality for the present invention Apply antitheft door door-plate environmental protection obtained by a kind of example manufacture method of antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF) The performance parameter list of anti-corrosion medium density fibre board (MDF).
(the unit of table 1.：Part)
Paraffin Tristerin Oleic acid 20% potassium hydroxide solution Water
Embodiment 1 85 13 8 6 98
Embodiment 2 88 10 5 4 100
Embodiment 3 80 12 7 5 95
Embodiment 4 83 15 6 3 90
Embodiment 5 90 14 10 4 93
(the unit of table 2.：Part)
Formaldehyde Urea 20% glass dust Acrylate copolymer emulsion Cornstarch Benzoic acid Phenol
Embodiment 1 85 58 13 38 4 13 15
Embodiment 2 88 60 12 40 5 12 10
Embodiment 3 90 55 11 35 1 15 13
Embodiment 4 83 50 10 30 2 14 18
Embodiment 5 80 57 15 33 3 10 20
(the unit of table 3.：Part)
Ammonium chloride Urea Ammoniacal liquor Water
Embodiment 1 13 37 20 40
Embodiment 2 15 33 25 43
Embodiment 3 10 40 18 48
Embodiment 4 14 35 15 45
Embodiment 5 12 38 23 50
Table 4.
It is moreover, made with the manufacture method of environment friendly corrosion protection medium density fibre board (MDF) using a kind of antitheft door door-plate of the present invention Antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF) is obtained, service life was up to 30 years.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although with reference to compared with The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the technology of invention Scheme is modified or equivalent substitution, and without departing from the scope of technical solution of the present invention, it all should cover the power in the present invention In sharp claimed range.

Claims (9)

1. a kind of manufacture method of antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF), it is characterised in that comprise the following steps：
1) stock up
By reed rod and beans bar using weight ratio as 1 ~ 2:1 ratio mixing, it is 15 ~ 20% that baking oven to water content is sent into after cleaning, is obtained Compound；
2) feed stock chip
Compound after drying is sent into drum chipper section, the fragment that average length is 5 ~ 7cm is obtained, is screened through screening machine, Remove fragment, chip and impurity；
3) boiling softens
Compound after section is subjected to boiling under 150 ~ 170 DEG C of steam, softens the compound, saturated vapour pressure 1 ~ 3MPa, 5 ~ 8min of digestion time；
4) water-proof emulsion is prepared
Paraffin, tristerin are heated to melting, stirred, is warming up to 80 ~ 85 DEG C, it is molten to add oleic acid, 20% hydrogen-oxygen agent Liquid, after being added dropwise, dropping temperature is 70 ~ 80 DEG C of water at 80 ~ 90 DEG C, stirs 20 ~ 30min, obtains the water-proof emulsion；
5) defibrator process
Compound after boiling is softened is sent into defibrator, at 170 ~ 180 DEG C, 1200 ~ 1400 turns/min of defibrator rotating speed, Fiber separation is carried out, 2 ~ 3min of defibrator process time, water-proof emulsion obtained by step 4) is atomized, defibrator discharge is incorporated with Sprayable Pipe, makes the water-proof emulsion be attached to fiber surface；
6) it is glued
After modified urea-formaldehyde resin glue is sticked into agent and the mixed solution atomization of curing agent, the fiber surface after defibrator process is sprayed at, is stirred, Mixing speed 60 ~ 70 turns/min, 10 ~ 13min of mixing time, are aged 20 ~ 25min, and the mixed solution solid content is 8 ~ 10%；
7) dry
Fiber obtained by step 6) is sent into drying box to be dried, 120 ~ 130 DEG C, 2 ~ 4min of drying time of drying temperature, dried To moisture content 2 ~ 3%；
8) mat formation, precompressed
Dried fiber is subjected to shaping of mating formation, slab is pressed into advance under 0.5 ~ 1MPa；
9) hot pressing
180 ~ 200 DEG C of hot pressing temperature, it is 2 ~ 4MPa, temperature in pressure by slab 2 ~ 4min of hot pressing under 2 ~ 5MPa obtained by step 8) Spend at 150 ~ 180 DEG C, 30 ~ 60s of hot pressing；
10) cutting edge, sanding, storage
Gained slab after the completion of hot pressing is cooled to room temperature, through abrasive finishing machine abrasive finishing and stock board is cut into, is put in storage, is obtained described anti- Steal door board environment friendly corrosion protection medium density fibre board (MDF)；
The preparation that the modified urea-formaldehyde resin glue sticks agent comprises the following steps：
Formalin in formula is added in four-hole boiling flask, adjusts pH value to be added to 8.0 ~ 8.5 with 30% sodium hydroxide solution The urea of urea total amount 45 ~ 50% is accounted for, and adds cornstarch, is stirred, is warming up to 90 DEG C, 30 ~ 40 min is incubated, is adjusted with formic acid PH value is saved to 5~6, is then added and is accounted for the urea of urea total amount 35 ~ 40% and carry out secondary polycondensation, then add 20% glass dust and Acrylate copolymer emulsion, after being incubated 20 ~ 30min, 75 DEG C are cooled to, 15 ~ 20min is reacted, 90 DEG C is warming up to, with 30% hydrogen Sodium hydroxide solution adjusts pH value to 7.5 ~ 8.5, is eventually adding benzoic acid, phenol and remaining urea, is incubated at 90 DEG C anti- After answering 30 ~ 40min, vacuum dehydration, cool discharging, produces the modified urea-formaldehyde resin glue and sticks agent.
2. the manufacture method of antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF) according to claim 1, its feature exist In gained medium density fiber 15 ~ 20mm of plate thickness, 2 ~ 3g/cm of density3, moisture content 2 ~ 3%.
3. the manufacture method of antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF) according to claim 1, its feature exist In the water-proof emulsion includes the chemical composition of following parts by weight：80 ~ 90 parts of paraffin, 10 ~ 15 parts of tristerin, oleic acid 5 ~ 10 parts, 20% 3 ~ 6 parts of potassium hydroxide solution, 90 ~ 100 parts of water.
4. the manufacture method of the antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF) according to claim 1 or 3, its feature It is, the water-proof emulsion dosage is the 1 ~ 2% of over dry compound weight.
5. the manufacture method of antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF) according to claim 1, its feature exist In the dosage that modified urea-formaldehyde resin glue described in step 6) sticks agent is the 15 ~ 25% of bone dry fiber quality.
6. the manufacture method of antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF) according to claim 1, its feature exist In the modified urea-formaldehyde resin glue, which sticks agent, includes the chemical composition of following parts by weight：80 ~ 90 parts of formaldehyde, 50 ~ 60 parts of urea, 20% 10 ~ 15 parts of glass dust, 30 ~ 40 parts of acrylate copolymer emulsion, 1 ~ 5 part of cornstarch, 10 ~ 15 parts of benzoic acid, phenol 10 ~ 20 Part.
7. the manufacture method of antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF) according to claim 1, its feature exist In hardener dose described in step 6) is the 1.5 ~ 2% of bone dry fiber quality.
8. the manufacture method of the antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF) according to claim 1 or 7, its feature It is, the curing agent includes the chemical composition of following parts by weight：10 ~ 15 parts of ammonium chloride, 35 ~ 40 parts of urea, ammoniacal liquor 15 ~ 25 Part, 40 ~ 50 parts of water.
9. the manufacture method of antitheft door door-plate environment friendly corrosion protection medium density fibre board (MDF) according to claim 1, its feature exist In the volume mass of thermal medium and bone dry fiber ratio is 10 ~ 15 in drying box in step 7):1, m3/kg。
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Denomination of invention: A manufacturing method of environmental protection anti-corrosion medium density fiberboard for anti-theft door panel

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