CN109796924A - A kind of preparation method of high temperature resistant aluminum wood composite decorating board - Google Patents
A kind of preparation method of high temperature resistant aluminum wood composite decorating board Download PDFInfo
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Abstract
The present invention relates to a kind of preparation methods of high temperature resistant aluminum wood composite decorating board, belong to building material technical field.The present invention is by polyimide intercalated into hexagonal boron nitride, and it is compound with silicon rubber resistant to high temperature, prepare a kind of polyimides resistant to high temperature-boron-silicon rubber adhesive, the adhesive of preparation is uniformly coated between matrix timber and aluminium foil, prepare a kind of high temperature resistant aluminum wood composite material for decoration, it is used as filler and silicon rubber compound into hexagonal boron nitride for polyimide intercalated, filler is centered around around silicon rubber, when the amount of filler is smaller, each other can it is evenly dispersed in the base, be not in contact and interact between filler；When amount of filler reaches a certain level, spacing reduces and interacts between filler, forms similar chain and netted structure in the base, obtains adhesive resistant to high temperature, so that adhesion strength is good at high temperature for the aluminum wood composite material for decoration of preparation.
Description
Technical field
The present invention relates to a kind of preparation methods of high temperature resistant aluminum wood composite decorating board, belong to building material technical field.
Background technique
Wood-based Panel Production is efficient and saves the effective way for utilizing timber resources, is to solve wood supply anxiety and demand
Growth contradiction, protect forest resources the main outlet alleviated under global warming environment.Wood-based Panel Production is in addition to utilizing timber
In addition, just towards using plant fiber, macromolecule polymeric material, metal, inorganic material etc. to manufacture as raw material using complex technique
The direction of various function wood-based plates is developed.Composite artificial board is prepared by substrate, metal-faced of wood-base fibre and particle panel material, can not only be mentioned
The physical and mechanical property of high material, and assign the new function such as wood-based plate decoration, fire-retardant.The processing of metal foil (plate) plate surface
Including the development of technologies and the development and application of the dedicated adhesive of metal such as wear-resisting, decoration, fire-retardant, metal finishing has been pushed
The development of wood-based plate.
Aluminium/wood composite decoration wood-based plate plate decoration wood-based plate is a kind of staple product in metal-faced wood-based plate.Aluminium
It is soft, there are good ductility, pigmentable or printed patterns；Aluminium is not easy to corrode, fire prevention, light, easy processing molding, can
It is used as the high-grade ornament materials that building, furniture, indoor and outdoor decoration and vehicle are fitted up extensively；Aluminium has high recyclability, secondary aluminium
Characteristic and primary aluminium almost without difference, still, the adhesive price for processing use is more expensive, material surface processing and hot pressing
Combination process is complicated, and energy consumption is high, and environmental pollution is big；The cold pressing period is long, and production efficiency is low, and equipment investment is big, causes to decorate
Plate price is higher, is restricted its popularization and application.
The preparation process of composite material largely determines the application range and production cost of the composite material, because
This, the preparation method for studying a kind of efficient, cheap aluminum wood composite material has the popularization and application of research aluminum wood composite material
Important meaning.Currently, the preparation method of aluminum wood composite material mainly has machining and chemical agent to bond two kinds.Pass through machinery
Processing preparation aluminum wood composite material is mainly used in aluminum wood composite door and window, and it is main to prepare aluminum wood composite material by Chemical Felter
Applied to wood-base fibre and particle panel material material.For machining, it need to be equipped with special equipment, project amount is larger, and it is at high cost, and wood
Material and aluminium alloy be individually separated processing will lead to control material surface quality it is relatively difficult.In the mistake of preparation aluminum wood composite material
Cheng Zhong, timber needs to make card slot, and is easy to collapse when being pressurized, and can reduce the intensity of composite material, and two kinds of aluminum wood
Material can reduce many in the reliability of connection.And by the method for Chemical Felter, hot-pressed material surface treatment and compound
Complex process, energy consumption is high, and environmental pollution is larger；And with cold pressing production then can the period it is long, result in lower production efficiency, to lead
Cause the raising of production cost.
Casting is used as most economical efficient metal forming technology, has extensive adaptability and lower production cost.Such as
Fruit can prepare aluminum wood composite material by the method for casting, and resulting materials are almost once-forming, reach and exempt from machining or few
The purpose of processing is measured to substantially reduce cost, and then has promoted the extensive use of aluminum wood composite material.Timber mainly contains three
Kind ingredient: cellulose, hemicellulose and lignin, cellulose can decompose rapidly at 300 DEG C or more, and lignin and hemicellulose
Decomposition temperature then can be lower.However, aluminium alloy is in a molten state due in casting process, the temperature of molten aluminum is remote when casting
Higher than the decomposition temperature of timber, timber is easily carbonized burning, seriously affects the performance of material, so needing to coat in wood surface resistance to
High-temperature coatings protect timber not to be carbonized burning, guarantee the performance of material.In addition, the high temperature resistant binder is good in addition to needing
Good thermophysical property, it is also necessary to have basic adhesion strength.
Summary of the invention
The technical problems to be solved by the invention: it for the lower problem of existing composite decorating board adhesion strength, provides
A kind of preparation method of high temperature resistant aluminum wood composite decorating board.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
(1) take pyromellitic acid dianhydride, polyphenyl polyisocyanate, N, N- dimethyl methyl acid imide, anhydrous methanol, polyethylene glycol,
Triethylene diamine, by pyromellitic acid dianhydride, polyphenyl polyisocyanate, N, N- dimethyl methyl acid imide, anhydrous methanol, poly- second two
Pure and mild triethylene diamine distinguishes stir process, obtains reactant；
(2) by reactant constant temperature stir process, hexagonal boron nitride is added, continues 1~2h of stirring, obtains mixture；
(3) mixture being placed on vulcanizing press, hot-pressing processing is cooled to room temperature, green body is obtained, by green body crushing grinding, and
20~30 meshes are crossed, filler is obtained；
(4) filler and silicon rubber are mixed, and are stirred under vacuum processing, obtained matrix, matrix is poured into cylindrical stainless steel mould,
Extra electric field curing process, obtains adhesive；
(5) matrix wood surface is subjected to grinding process, matrix timber must be pre-processed；Aluminium foil surface is polished, degreasing adds
Washing process, being placed in temperature is to dry at 40~50 DEG C to constant weight, is cooled to room temperature, obtains pretreatment aluminium foil；
(6) it is compound to get high temperature resistant aluminum wood that matrix timber, adhesive and the pretreatment compound progress hot-pressing processing of aluminium foil will be pre-processed
Decorative panel.
Pyromellitic acid dianhydride, polyphenyl polyisocyanate, N described in step (1), N- dimethyl methyl acid imide, without water beetle
Alcohol, polyethylene glycol, the ratio between triethylene diamine are as follows: according to parts by weight, weigh respectively 20~30 parts of pyromellitic acid dianhydrides,
10~20 parts of polyphenyl polyisocyanates, 40~60 parts of N, N- dimethyl methyl acid imide, 5~10 parts of anhydrous methanols, 1~3 part it is poly-
Ethylene glycol, 0.3~0.5 part of triethylene diamine.
It is N- dimethyl methyl acid imide, anhydrous by pyromellitic acid dianhydride, polyphenyl polyisocyanate, N described in step (1)
The step of methanol, polyethylene glycol and triethylene diamine difference stir process are as follows: by pyromellitic acid dianhydride and N, N- dimethyl formyl
Imines mixing, 30~40min of insulated and stirred at being 100~120 DEG C in temperature, obtains mixed liquor, anhydrous methanol is added, is in temperature
It is stirred evenly at 70~80 DEG C, obtains mixed liquor A, polyethylene glycol and triethylene diamine is added, stirred at being 40~50 DEG C in temperature
Uniformly, it obtains mixed liquid B, polyphenyl polyisocyanate is added, quickly stir 10 in the case where revolving speed is 1000~1500r/min~
20min obtains presoma, and presoma is placed in vacuum drying oven, and keeps the temperature 1~2h at being 280~300 DEG C in temperature.
By reactant constant temperature stir process step described in step (2) are as follows: by reactant temperature be 400~500 DEG C, turn
Speed is that 10~20min is stirred under 1200~1500r/min；The mass ratio of reactant and hexagonal boron nitride is 1: 2.
Described in step (3) the step of mixture is placed in hot-pressing processing on vulcanizing press are as follows: temperature be 160~
180 DEG C, pressure is 5~10min of hot pressing under 1~5MPa.
The mass ratio of filler described in step (4) and silicon rubber is 1: 5；It is stirred under vacuum processing step are as follows: low whipping speed
To be stirred under vacuum 1~2h under 800~900r/min.
Matrix is poured into extra electric field curing process step in cylindrical stainless steel mould described in step (4) are as follows: by base
Body pours into cylindrical stainless steel mould, and mold top and bottom are dielectrically separated from by certain thickness sheet rubber, by mold top and bottom point
Do not connect with the positive and negative anodes of high-voltage DC power supply, solidifies 20~30min at being 70~80 DEG C in temperature, be cooled to room temperature.
Matrix wood surface is subjected to grinding process step described in step (5) are as follows: by 120 mesh sand of matrix wood surface
Paper 10~20min of polishing, with absorbent cotton wiped clean.
Step is polished aluminium foil surface described in (5), degreasing adds washing process step are as follows: by aluminium foil surface with 120
Mesh sand paper 10~20min of polishing, and be after 5% sodium hydroxide solution washs 3~5 times with mass fraction, it is 10% with mass fraction
Nitric acid washs 2~4 times, is finally rinsed 3~5 times with deionized water.
It will pretreatment matrix timber, adhesive and the pretreatment compound carry out autoclave steps of aluminium foil described in step (6)
Are as follows: the adhesive of preparation is uniformly coated on to the surface of pretreatment matrix timber, pretreatment aluminium foil is divided in coating adhesive
Pretreatment timber surface on, temperature be 100~120 DEG C, pressure be 0.6~1MPa under 3~5min of hot pressing, be cooled to room
Temperature.
The present invention is compared with other methods, and advantageous effects are:
(1) present invention by polyimide intercalated into hexagonal boron nitride, and it is compound with silicon rubber resistant to high temperature, it is resistance to prepare one kind
The polyimides of high temperature-boron-silicon rubber adhesive, the adhesive of preparation is uniformly coated between matrix timber and aluminium foil, preparation
A kind of high temperature resistant aluminum wood composite material for decoration out, polyimides are one kind that heat resistance is best in synthetic polymer, can be 280
It DEG C is used for a long time, strength retention is big after high temperature exposure for a long time, and still there are the shearing strength of 7MPa, resistance to high dose in such as 538 DEG C whens
Irradiation behaviour is good, and electrical insulation capability is excellent, has to glass, diamond, boron, copper, aluminium, titanium, stainless steel, graphite, quartz etc. good
Good adhesive property；Boron nitride is a kind of good filler of high-temperature stability, is made polyimide intercalated into hexagonal boron nitride
Compound for filler and silicon rubber, filler is centered around around silicon rubber, when the amount of filler is smaller, can be dispersed in each other
In matrix, it is not in contact and interacts between filler；When amount of filler reaches a certain level, spacing reduces simultaneously between filler
It interacts, forms similar chain and netted structure in the base, obtain adhesive resistant to high temperature, so that preparation
Adhesion strength is good at high temperature for aluminum wood composite material for decoration；
(2) adhesive of preparation is uniformly coated between matrix timber and aluminium foil by the present invention, prepares a kind of high temperature resistant aluminum wood
Composite material for decoration；Aluminium foil surface polished, polish plus washing process after, surface critical free energy improves 2 times and 4 times, moistens
Moist enhancing；In general, proof gold metal surface can be high, and organic polymer adhesive surface can be often relatively low, from thermodynamics
From the perspective of, organic polymer adhesive can be good to the progress of the metal of high energy surface wet, and metal surface is generated
Metal salt or metal oxide, also will affect metal surface can, metal generate metallic salt, surface hydrophilicity increase, profit
It is moist preferable；In addition, increasing roughness has the function of positive, intermolecular connection and the formation of key can be increased；Following
Three kinds of situations: higher surface energy is had by viscous metal surface；Adhesive is good to metal surface compatibility；The surface of adhesive
Power is small, then adhesive and metal surface can form lesser contact angle, and coating is easy；
(3) present invention is to add washing process with sand paper (abrasive band, emery cloth) polishing, polishing by the way of mechanical treatment, at machinery
The some oxide layers that can remove metal surface, release agent are managed, weak boundary layer is removed, increases the quantity of active chemical group, are generated
One clean coarse surface, improves wettability of the surface, surface free energy and glue-joint strength, mechanical surface treatment and mainly generates
Macro-asperity, so that the adhesive property between matrix timber and aluminium foil is good.
Specific embodiment
According to parts by weight, 20~30 parts of pyromellitic acid dianhydrides, 10~20 parts of polyphenyl polyisocyanates, 40 are weighed respectively
~60 parts of N, N- dimethyl methyl acid imide, 5~10 parts of anhydrous methanols, 1~3 part of polyethylene glycol, 0.3~0.5 part of triethylene diamine,
By pyromellitic acid dianhydride and N, N- dimethyl methyl acid imide is mixed, 30~40min of insulated and stirred at being 100~120 DEG C in temperature,
Mixed liquor is obtained, anhydrous methanol is added, is stirred evenly at being 70~80 DEG C in temperature, is obtained mixed liquor A, polyethylene glycol and three second are added
Alkene diamines stirs evenly at being 40~50 DEG C in temperature, obtains mixed liquid B, polyphenyl polyisocyanate is added, and is 1000 in revolving speed
Quickly stir 10~20min under~1500r/min, obtain presoma, presoma is placed in vacuum drying oven, temperature be 280~
1~2h is kept the temperature at 300 DEG C, obtains reactant；By reactant temperature be 400~500 DEG C, revolving speed be 1200~1500r/min under
10~20min is stirred, in mass ratio 1: 2 is added hexagonal boron nitride, continues 1~2h of stirring, obtains mixture, mixture is placed in flat
It is 160~180 DEG C in temperature on plate vulcanizer, pressure is 5~10min of hot pressing under 1~5MPa, it is cooled to room temperature, obtains green body,
By green body crushing grinding, and 20~30 meshes are crossed, obtains filler；In mass ratio 1: 5 mixes filler and silicon rubber, low whipping speed
For 1~2h of vacuum stirring under 800~900r/min, matrix is obtained, matrix is poured into cylindrical stainless steel mould, mold top and bottom
It is dielectrically separated from, mold top and bottom is connected with the positive and negative anodes of high-voltage DC power supply respectively, in temperature by certain thickness sheet rubber
It is 20~30min of solidification at 70~80 DEG C, is cooled to room temperature, obtains adhesive；By the 120 mesh sand paper polishing 10 of matrix wood surface
~20min must pre-process matrix timber with absorbent cotton wiped clean；By aluminium foil surface with 120 mesh sand paper polish 10~20min,
It and with mass fraction is to be washed 2~4 times with mass fraction for 10% nitric acid, finally used after 5% sodium hydroxide solution wash 3~5 times
Deionized water is rinsed 3~5 times, and being placed in temperature is to dry at 40~50 DEG C to constant weight, is cooled to room temperature, is obtained pretreatment aluminium foil；
The adhesive of preparation is uniformly coated on to the surface of pretreatment matrix timber, aluminium foil will be pre-processed and divided in the pre- of coating adhesive
It is 100~120 DEG C in temperature, pressure is 3~5min of hot pressing under 0.6~1.0MPa, is cooled to room on the surface for handling timber
Temperature is to get high temperature resistant aluminum wood composite decorating board.
According to parts by weight, 20 parts of pyromellitic acid dianhydrides, 10 parts of polyphenyl polyisocyanates, 40 parts of N, N- bis- are weighed respectively
Methyl carboximide, 5 parts of anhydrous methanols, 1 part of polyethylene glycol, 0.3 part of triethylene diamine, by pyromellitic acid dianhydride and N, N- diformazan
Base carboximide mixing, insulated and stirred 30min at being 100 DEG C in temperature, obtains mixed liquor, anhydrous methanol is added, and is 70 in temperature
It is stirred evenly at DEG C, obtains mixed liquor A, polyethylene glycol and triethylene diamine is added, stirred evenly, must mix at being 40 DEG C in temperature
Polyphenyl polyisocyanate is added in liquid B, quickly stirs 10min in the case where revolving speed is 1000r/min, obtains presoma, presoma is set
In vacuum drying oven, 1h is kept the temperature at being 280 DEG C in temperature, obtains reactant；It in temperature is 400 DEG C by reactant, revolving speed is
10min is stirred under 1200r/min, in mass ratio 1: 2 is added hexagonal boron nitride, continues to stir 1h, obtains mixture, mixture is set
It is 160 DEG C in temperature, pressure is hot pressing 5min under 1MPa, is cooled to room temperature, obtains green body, green body is broken on vulcanizing press
Breakdown mill, and 20 meshes are crossed, obtain filler；In mass ratio 1: 5 mixes filler and silicon rubber, and low whipping speed is under 800r/min
It is stirred under vacuum 1h, matrix is obtained, matrix is poured into cylindrical stainless steel mould, mold top and bottom are exhausted by certain thickness sheet rubber
Edge isolation, mold top and bottom are connected with the positive and negative anodes of high-voltage DC power supply respectively, solidify 20min at being 70 DEG C in temperature, cold
But to room temperature, adhesive is obtained；Matrix wood surface is obtained into pre- place with absorbent cotton wiped clean with 120 mesh sand paper polishing 10min
Manage matrix timber；It is that 5% sodium hydroxide solution washs 3 times by aluminium foil surface 120 mesh sand paper polishing 10min, and with mass fraction
Afterwards, it is that 10% nitric acid washs 2 times with mass fraction, is finally rinsed 3 times with deionized water, being placed in temperature is to dry extremely at 40 DEG C
Constant weight is cooled to room temperature, and obtains pretreatment aluminium foil；The adhesive of preparation is uniformly coated on to the surface of pretreatment matrix timber, it will
Pretreatment aluminium foil is divided on the surface of the pretreatment timber of coating adhesive, is 100 DEG C in temperature, and pressure is heat under 0.6MPa
3min is pressed, is cooled to room temperature to get high temperature resistant aluminum wood composite decorating board.
According to parts by weight, 25 parts of pyromellitic acid dianhydrides, 15 parts of polyphenyl polyisocyanates, 50 parts of N, N- bis- are weighed respectively
Methyl carboximide, 8 parts of anhydrous methanols, 2 parts of polyethylene glycol, 0.4 part of triethylene diamine, by pyromellitic acid dianhydride and N, N- diformazan
Base carboximide mixing, insulated and stirred 35min at being 110 DEG C in temperature, obtains mixed liquor, anhydrous methanol is added, and is 75 in temperature
It is stirred evenly at DEG C, obtains mixed liquor A, polyethylene glycol and triethylene diamine is added, stirred evenly, must mix at being 45 DEG C in temperature
Polyphenyl polyisocyanate is added in liquid B, quickly stirs 15min in the case where revolving speed is 1250r/min, obtains presoma, presoma is set
In vacuum drying oven, 1h is kept the temperature at being 290 DEG C in temperature, obtains reactant；It in temperature is 450 DEG C by reactant, revolving speed is
15min is stirred under 1350r/min, in mass ratio 1: 2 is added hexagonal boron nitride, continues to stir 1h, obtains mixture, mixture is set
It is 170 DEG C in temperature, pressure is hot pressing 8min under 3MPa, is cooled to room temperature, obtains green body, green body is broken on vulcanizing press
Breakdown mill, and 25 meshes are crossed, obtain filler；In mass ratio 1: 5 mixes filler and silicon rubber, and low whipping speed is under 850r/min
It is stirred under vacuum 1h, matrix is obtained, matrix is poured into cylindrical stainless steel mould, mold top and bottom are exhausted by certain thickness sheet rubber
Edge isolation, mold top and bottom are connected with the positive and negative anodes of high-voltage DC power supply respectively, solidify 25min at being 75 DEG C in temperature, cold
But to room temperature, adhesive is obtained；Matrix wood surface is obtained into pre- place with absorbent cotton wiped clean with 120 mesh sand paper polishing 15min
Manage matrix timber；It is that 5% sodium hydroxide solution washs 4 times by aluminium foil surface 120 mesh sand paper polishing 15min, and with mass fraction
Afterwards, it is that 10% nitric acid washs 3 times with mass fraction, is finally rinsed 4 times with deionized water, being placed in temperature is to dry extremely at 45 DEG C
Constant weight is cooled to room temperature, and obtains pretreatment aluminium foil；The adhesive of preparation is uniformly coated on to the surface of pretreatment matrix timber, it will
Pretreatment aluminium foil is divided on the surface of the pretreatment timber of coating adhesive, is 110 DEG C in temperature, and pressure is heat under 0.8MPa
4min is pressed, is cooled to room temperature to get high temperature resistant aluminum wood composite decorating board.
According to parts by weight, 30 parts of pyromellitic acid dianhydrides, 20 parts of polyphenyl polyisocyanates, 60 parts of N, N- bis- are weighed respectively
Methyl carboximide, 10 parts of anhydrous methanols, 3 parts of polyethylene glycol, 0.5 part of triethylene diamine, by pyromellitic acid dianhydride and N, N- bis-
Methyl carboximide mixing, insulated and stirred 40min at being 120 DEG C in temperature, obtains mixed liquor, anhydrous methanol is added, is in temperature
It is stirred evenly at 80 DEG C, obtains mixed liquor A, polyethylene glycol and triethylene diamine is added, stirred evenly, obtain mixed at being 50 DEG C in temperature
Liquid B is closed, polyphenyl polyisocyanate is added, 20min is quickly stirred in the case where revolving speed is 1500r/min, presoma is obtained, by presoma
It is placed in vacuum drying oven, keeps the temperature 2h at being 300 DEG C in temperature, obtain reactant；It in temperature is 500 DEG C by reactant, revolving speed is
20min is stirred under 1500r/min, in mass ratio 1: 2 is added hexagonal boron nitride, continues to stir 2h, obtains mixture, mixture is set
It is 180 DEG C in temperature, pressure is hot pressing 10min under 5MPa, is cooled to room temperature, obtains green body, green body is broken on vulcanizing press
Breakdown mill, and 30 meshes are crossed, obtain filler；In mass ratio 1: 5 mixes filler and silicon rubber, and low whipping speed is under 900r/min
It is stirred under vacuum 2h, matrix is obtained, matrix is poured into cylindrical stainless steel mould, mold top and bottom are exhausted by certain thickness sheet rubber
Edge isolation, mold top and bottom are connected with the positive and negative anodes of high-voltage DC power supply respectively, solidify 30min at being 80 DEG C in temperature, cold
But to room temperature, adhesive is obtained；Matrix wood surface is obtained into pre- place with absorbent cotton wiped clean with 120 mesh sand paper polishing 20min
Manage matrix timber；It is that 5% sodium hydroxide solution washs 5 times by aluminium foil surface 120 mesh sand paper polishing 20min, and with mass fraction
Afterwards, it is that 10% nitric acid washs 4 times with mass fraction, is finally rinsed 5 times with deionized water, being placed in temperature is to dry extremely at 50 DEG C
Constant weight is cooled to room temperature, and obtains pretreatment aluminium foil；The adhesive of preparation is uniformly coated on to the surface of pretreatment matrix timber, it will
Pretreatment aluminium foil is divided on the surface of the pretreatment timber of coating adhesive, is 120 DEG C in temperature, and pressure is heat under 1.0MPa
5min is pressed, is cooled to room temperature to get high temperature resistant aluminum wood composite decorating board.
Reference examples: the aluminum wood composite decorating board of Dongguan company production.
The aluminum wood composite decorating board that example and reference examples are prepared is detected, specific detection is as follows:
According to GB/T17657-1999 " test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels " and LY/T1983-2011 " gold
Belong to (copper foil, aluminium foil) face artificial board " standard requirements to aluminium foil faced deorative wood-based plate carry out static bending strength, elasticity modulus, table
Face bonding strength, the sampling of dipping and stripping performance and test.
Specific test result such as table 1.
1 performance characterization contrast table of table
| Detection project | Example 1 | Example 2 | Example 3 | Reference examples |
| Static bending strength/MPa | 39.51 | 39.93 | 39..44 | 22.15 |
| Elasticity modulus/MPa | 5960 | 5987 | 5933 | 3224 |
| Surface bonding intensity/MPa | 1.36 | 1.35 | 1.40 | 0.88 |
| Dipping and stripping performance/mm | <25 | <25 | <25 | >25 |
As shown in Table 1, aluminum wood composite decorating board prepared by the present invention has good bonding strength and mechanical property.
Claims (10)
1. a kind of preparation method of high temperature resistant aluminum wood composite decorating board, it is characterised in that specific preparation step are as follows:
(1) take pyromellitic acid dianhydride, polyphenyl polyisocyanate, N, N- dimethyl methyl acid imide, anhydrous methanol, polyethylene glycol,
Triethylene diamine, by pyromellitic acid dianhydride, polyphenyl polyisocyanate, N, N- dimethyl methyl acid imide, anhydrous methanol, poly- second two
Pure and mild triethylene diamine distinguishes stir process, obtains reactant；
(2) by reactant constant temperature stir process, hexagonal boron nitride is added, continues 1~2h of stirring, obtains mixture；
(3) mixture being placed on vulcanizing press, hot-pressing processing is cooled to room temperature, green body is obtained, by green body crushing grinding, and
20~30 meshes are crossed, filler is obtained；
(4) filler and silicon rubber are mixed, and are stirred under vacuum processing, obtained matrix, matrix is poured into cylindrical stainless steel mould,
Extra electric field curing process, obtains adhesive；
(5) matrix wood surface is subjected to grinding process, matrix timber must be pre-processed；Aluminium foil surface is polished, degreasing adds
Washing process, being placed in temperature is to dry at 40~50 DEG C to constant weight, is cooled to room temperature, obtains pretreatment aluminium foil；
(6) it is compound to get high temperature resistant aluminum wood that matrix timber, adhesive and the pretreatment compound progress hot-pressing processing of aluminium foil will be pre-processed
Decorative panel.
2. a kind of preparation method of high temperature resistant aluminum wood composite decorating board according to claim 1, it is characterised in that: step
(1) pyromellitic acid dianhydride, polyphenyl polyisocyanate, N described in, N- dimethyl methyl acid imide, anhydrous methanol, polyethylene glycol,
Ratio between triethylene diamine are as follows: according to parts by weight, weigh 20~30 parts of pyromellitic acid dianhydrides, benzene more than 10~20 parts respectively
Quito isocyanates, 40~60 parts of N, N- dimethyl methyl acid imide, 5~10 parts of anhydrous methanols, 1~3 part of polyethylene glycol, 0.3~
0.5 part of triethylene diamine.
3. a kind of preparation method of high temperature resistant aluminum wood composite decorating board according to claim 1, it is characterised in that: step
(1) described in by pyromellitic acid dianhydride, polyphenyl polyisocyanate, N, N- dimethyl methyl acid imide, anhydrous methanol, polyethylene glycol
The step of distinguishing stir process with triethylene diamine are as follows: by pyromellitic acid dianhydride and N, N- dimethyl methyl acid imide mixing, in temperature
Degree is 30~40min of insulated and stirred at 100~120 DEG C, obtains mixed liquor, and anhydrous methanol is added, and is stirred at being 70~80 DEG C in temperature
It mixes uniformly, obtains mixed liquor A, polyethylene glycol and triethylene diamine is added, stirred evenly at being 40~50 DEG C in temperature, obtain mixed liquor
Polyphenyl polyisocyanate is added in B, quickly stirs 10~20min in the case where revolving speed is 1000~1500r/min, obtains presoma, will
Presoma is placed in vacuum drying oven, and keeps the temperature 1~2h at being 280~300 DEG C in temperature.
4. a kind of preparation method of high temperature resistant aluminum wood composite decorating board according to claim 1, it is characterised in that: step
(2) described in by reactant constant temperature stir process step are as follows: by reactant in temperature be 400~500 DEG C, revolving speed is 1200~
10~20min is stirred under 1500r/min；The mass ratio of reactant and hexagonal boron nitride is 1: 2.
5. a kind of preparation method of high temperature resistant aluminum wood composite decorating board according to claim 1, it is characterised in that: step
(3) described in the step of mixture is placed in hot-pressing processing on vulcanizing press are as follows: temperature be 160~180 DEG C, pressure 1
5~10min of hot pressing under~5MPa.
6. a kind of preparation method of high temperature resistant aluminum wood composite decorating board according to claim 1, it is characterised in that: step
(4) mass ratio of filler and silicon rubber described in is 1: 5；It is stirred under vacuum processing step are as follows: low whipping speed is 800~900r/
1~2h is stirred under vacuum under min.
7. a kind of preparation method of high temperature resistant aluminum wood composite decorating board according to claim 1, it is characterised in that: step
(4) matrix is poured into extra electric field curing process step in cylindrical stainless steel mould described in are as follows: matrix is poured into cylinder
In stainless steel mould, mold top and bottom are dielectrically separated from by certain thickness sheet rubber, by mold top and bottom respectively with high voltage direct current
The positive and negative anodes of power supply connect, and solidify 20~30min at being 70~80 DEG C in temperature, are cooled to room temperature.
8. a kind of preparation method of high temperature resistant aluminum wood composite decorating board according to claim 1, it is characterised in that: step
(5) described in by matrix wood surface carry out grinding process step are as follows: by matrix wood surface with 120 mesh sand paper polishing 10~
20min, with absorbent cotton wiped clean.
9. a kind of preparation method of high temperature resistant aluminum wood composite decorating board according to claim 1, it is characterised in that: step
(5) aluminium foil surface being polished described in, degreasing adds washing process step are as follows: aluminium foil surface is polished 10 with 120 mesh sand paper
~20min, and be after 5% sodium hydroxide solution washs 3~5 times with mass fraction, it is that 10% nitric acid washs 2~4 with mass fraction
It is secondary, finally rinsed 3~5 times with deionized water.
10. a kind of preparation method of high temperature resistant aluminum wood composite decorating board according to claim 1, it is characterised in that: step
(6) matrix timber, adhesive and the pretreatment compound carry out autoclave steps of aluminium foil will be pre-processed described in are as follows: by the glue of preparation
Glutinous agent is uniformly coated on the surface of pretreatment matrix timber, will pre-process aluminium foil and divides in the pretreatment timber for being coated with adhesive
It is 100~120 DEG C in temperature, pressure is 3~5min of hot pressing under 0.6~1MPa, is cooled to room temperature on surface.
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| CN201910059823.4A CN109796924A (en) | 2019-01-22 | 2019-01-22 | A kind of preparation method of high temperature resistant aluminum wood composite decorating board |
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| CN201910059823.4A CN109796924A (en) | 2019-01-22 | 2019-01-22 | A kind of preparation method of high temperature resistant aluminum wood composite decorating board |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110746563A (en) * | 2019-10-24 | 2020-02-04 | 江苏理工学院 | PEG ball-milling intercalation h-BN modified polyurethane heat-conducting composite material and preparation method thereof |
| CN117567981A (en) * | 2023-10-20 | 2024-02-20 | 黄山贝诺科技有限公司 | Preparation method of adhesive for aluminum-wood compounding |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110746563A (en) * | 2019-10-24 | 2020-02-04 | 江苏理工学院 | PEG ball-milling intercalation h-BN modified polyurethane heat-conducting composite material and preparation method thereof |
| CN110746563B (en) * | 2019-10-24 | 2021-06-29 | 江苏理工学院 | PEG ball-milling intercalation h-BN modified polyurethane heat-conducting composite material and preparation method thereof |
| CN117567981A (en) * | 2023-10-20 | 2024-02-20 | 黄山贝诺科技有限公司 | Preparation method of adhesive for aluminum-wood compounding |
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