CN110284373A - A kind of preparation method and waterproof flame-retardant type corrugated board of waterproof flame-retardant type corrugated board - Google Patents
A kind of preparation method and waterproof flame-retardant type corrugated board of waterproof flame-retardant type corrugated board Download PDFInfo
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- CN110284373A CN110284373A CN201910680119.0A CN201910680119A CN110284373A CN 110284373 A CN110284373 A CN 110284373A CN 201910680119 A CN201910680119 A CN 201910680119A CN 110284373 A CN110284373 A CN 110284373A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/46—Non-macromolecular organic compounds
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/62—Macromolecular organic compounds or oligomers thereof obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/64—Inorganic compounds
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/34—Ignifugeants
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to a kind of preparation method of waterproof flame-retardant type corrugated board and waterproof flame-retardant type corrugated board, which includes: that i) waterproof flame-retardant paint is placed in coating machine, carries out quantitative coating in the one or both sides of corrugated board；The waterproof flame-retardant paint includes following components: organic silicon modified polyurethane aqueous dispersoid, ammonium polyphosphate, melamine phosphate, pentaerythrite, isopropanol, isopropanol silica solution, methyltrimethoxysilane, nonylphenol polyoxyethylene ether, auxiliary agent and water；Ii saturated vapor drying) is carried out to the corrugated board after coating, drying temperature is 140 DEG C -160 DEG C, residence time 8-12s.In the case that and coating weight thin in coating is few, gained waterproof flame-retardant type corrugated board has good mechanical strength and mechanical property；Reach fire retardant rank, fireproof flame-retardant effect is obvious；Film coated surface water contact angle reaches 120 ° or more, has good moisture resistance waterproofness.
Description
Technical field
The invention belongs to corrugated board technical fields, and in particular to a kind of preparation method of waterproof flame-retardant type corrugated board,
It also relates to the above-mentioned preparation method of one kind and prepares resulting waterproof flame-retardant type corrugated board.
Background technique
Rise and explosive growth with electric business, logistics and delivery industry, the corrugated board used as packaging material
Dosage is also presented and is increased substantially, and corrugated board industry enters the fast-developing and growth phase.Corrugated board is also known as corrugated cardboard, is
Fluting medium is processed into the couch board being adhesively-bonded together to form in a certain way with boxboard after corrugated shape, by least
One layer of corrugated paper and one layer of boxboard are bonded, and have preferable intensity, elasticity and stiffness.
Corrugated board, which is used as packaging material, mainly following three points advantage: 1) cost of manufacture is cheap, manufactured packing container
Light weight, foldable, convenient for storage and transport, body paper cost is far below other materials such as plastics, metals；2) convenient for recycling benefit
With meeting green package requirement, can be used as the raw material of paper pulp or molding production after corrugated board recycling, secondary can also produce
Corrugated board；3) molding easy to process, packing container needed for commodity being processed by cross cutting impression folding, operation
It is simple and easy.The presented higher automation of the production technology of corrugated board and continuous productive process, continuously acting production lines be by
Corrugation compacting, gluing, laminated, dryness finalization are continuously finished on same machine, and throughput rate is fast, at low cost, and can guarantee
Quality of corrugated.
Since the main component of corrugated board is plant cellulose, it is dehydrated and aoxidizes as temperature increases when heated, often
The oxygen index (OI) of corrugated board is only 15% under temperature state, belongs to inflammable thing.In electric business, logistics, the storage of delivery industry and transport
In the process, a large amount of corrugated case accumulation, there are biggish security against fire hidden danger；News is reported often factory, warehouse, transport
Vehicle, resident's corridor, recycling website etc. because accumulation corrugated case it is inflammable caused by fire, cause many personnel and/or property
Loss.To solve the above problems, needing to carry out corrugated board flame-retardant modified while reinforcing security against fire consciousness.
It is existing to corrugated board carry out flame-retardant modified method mainly pass through slurry in addition, finished product dipping or surface be coated with
Mode, fire retardant is applied to the inside of corrugated board or is attached to its surface, by hinder fiber thermal decomposition, inhibition can
The generation of combustion property gas, the approach such as isolation heat and combustion-supporting gas, or dilution imflammable gas are fire-retardant to achieve the purpose that.Wherein,
The fire retardant added in slurry can seriously affect the mouldability and machinability of corrugated board, and the mode of finished product dipping also will affect watt
The flatness of stupefied paper, stiffness and sizing, comparatively speaking surface coating process is to the negative of the physical and chemical performance of corrugated board
It influences small, is the effective way of development function corrugated board.
Although existing corrugated board fire retardant can reach certain flame retardant effect, have the following deficiencies: first is that
The use of halogen containing flame-retardant, fire can generate the pernicious gases such as hydrogen halides when occurring, cause harm to the human body, cause brokenly to environment
It is bad；Second is that inorganic fire retardants such as Al (OH)3、Mg(OH)2Use, exist be easy to run off, dosage is big, to corrugated board intensity effect
The problems such as big, seriously constrains the use of fire-retarded corrugated paper plate.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of waterproof flame-retardant type corrugated board, the machinery of gained corrugated board
Intensity and high mechanical properties, water proof fire retardant effect are good.
A second object of the present invention is to provide a kind of above-mentioned preparation methods to prepare resulting waterproof flame-retardant type corrugated board.
To achieve the goals above, the technical scheme adopted by the invention is as follows:
A kind of preparation method of waterproof flame-retardant type corrugated board, comprising the following steps:
I) waterproof flame-retardant paint is placed in coating machine, carries out roll-type in the one or both sides of corrugated board and is quantitatively coated with,
Total coating weight is not less than 2.5g/m in terms of dry film2；
The waterproof flame-retardant paint includes following components in percentage by weight: organic silicon modified polyurethane aqueous dispersoid
It is 48%-52%, ammonium polyphosphate 10%-12%, melamine phosphate 5.0%-6.0%, pentaerythrite 5.0%-6.0%, different
Propyl alcohol 4.0%-5.0%, isopropanol silica solution 3.0%-3.5%, methyltrimethoxysilane 1.5%-1.8%, nonyl phenol are poly-
Ethylene oxide ether 0.1%-0.2%, auxiliary agent 0.5%-1.0%, surplus are water；
Ii saturated vapor drying) is carried out to the corrugated board after coating, drying temperature is 140 DEG C -160 DEG C, the residence time
For 8-12s, cooling to obtain the final product.
In step i), total coating weight is calculated as 2.5-25g/m with dry film2.Total coating weight herein refers to single side or two
The sum of face coating weight.The quality referred to after film drying in terms of dry film herein.
Further, total coating weight is in terms of dry film not higher than 12.5% of corrugated board grammes per square metre before being coated with.
The solid content of the organic silicon modified polyurethane aqueous dispersoid is 40%-45%.
The organic silicon modified polyurethane aqueous dispersoid is using polyethers N210, polyetherpolysilicone dihydric alcohol and different Fo Er
Performed polymer is made in ketone di-isocyanate reaction, using dihydromethyl propionic acid, trimethylolpropane and 1,4-butanediol as chain extender, closes
At self-crosslinkable polyurethane aqueous dispersion.
Further, the Mn=1000 of the polyethers N210；The Mn=4600 of polyetherpolysilicone dihydric alcohol；Initial n (-
NCO)/n (- OH)=2.5, wherein n (- OH) refers to the total mole number of polyethers 210 and polyetherpolysilicone dihydric alcohol institute hydroxyl；
The quality of polyetherpolysilicone dihydric alcohol accounts for the 6% of pre-polymer mix gross mass, and the dosage of catalyst is total polymerization material quality
0.03%；Dihydromethyl propionic acid dosage is the 4% of total polymerization material quality；Trihydroxy methyl propane dosage is total polymerization raw material
The 40% of quality；Degree of neutralization 100%.
The solid content of the isopropanol silica solution is 30%-35%, partial size 5-10nm.
The auxiliary agent includes dispersing agent, defoaming agent and levelling agent；The mass ratio of the dispersing agent, defoaming agent and levelling agent is
(1.0-2.0):1.0:(1.0-2.0)。
A kind of preparation method of the above-mentioned waterproof flame-retardant paint for corrugated board, comprising the following steps:
1) methyltrimethoxysilane of a small amount of water and 1/3 formula ratio is added in the isopropanol silica solution for taking formula ratio,
Be stirred to react 50-60min under the conditions of 50 DEG C -60 DEG C, after be cooled to room temperature, obtain modified silicasol；
2) ammonium polyphosphate, melamine phosphate and the pentaerythrite for taking formula ratio, the methyl trimethoxy oxygen with 2/3 formula ratio
Base silane is mixed and is ground, and obtains mixing fire retardant；
3) organic silicon modified polyurethane aqueous dispersoid of formula ratio is taken, modified silicasol obtained by step 1) is added, in 800-
10-15min is stirred under 1000rpm speed conditions, obtains modified base material；
4) after taking the isopropanol of formula ratio to mix with water, nonylphenol polyoxyethylene ether, auxiliary agent and the step of formula ratio is added
2) gained mixes fire retardant, mixed with modified base material obtained by step 3) after stirring 10-15min under 400-600rpm speed conditions
Close, under 1200-1500rpm speed conditions shearing dispersion 20-25min to get.
In step 1), the addition quality of water is the 10%-15% of isopropanol silica solution quality.
In step 2), the grinding, which refers to, is ground to grain graininess no more than 5 μm.
Step ii) in, the pressure of the saturated vapor is 1.2-1.5MPa.
A kind of above-mentioned preparation method prepares resulting waterproof flame-retardant type corrugated board.
In the preparation method of waterproof flame-retardant type corrugated board of the invention, it is point that waterproof flame-retardant paint used, which is with water,
The water paint of dispersion media, the water paint is using organic silicon modified polyurethane aqueous dispersoid as film forming binder.Aqueous polyurethane sheet
Body has the characteristics that high good film-forming property, coating machinery intensity, elasticity and wearability are excellent, strong with substrate adhesive force, and use is aqueous
On the one hand flame-retardant composition is attached to watt by film forming binder of the polyurethane as anti-flaming dope using its strong film forming and strong adhesion
Corrugated paper board surface forms flame protection layer, and coating strength is high, is firmly combined with corrugation paper base material, in processing, transports and used
Fire-retardant film is not easily to fall off in journey；Another aspect polyurethane resin as Intumscent Flame Retardant System carbon forming agent (carbon source) with it is other
Flame-retardant composition is used cooperatively, and the acidic materials and ammonia generated when being thermally decomposed with catalyst react, dehydration carbonization itself is formed
Carburization zone completely cuts off combustion-supporting gas and heat, prevents burning.There are hydrophilic radical in conventional polyurethanes molecule, water resistance is not high；This
Invent the organic silicon modified polyurethane aqueous dispersoid that uses be using polyetherpolysilicone dihydric alcohol as modified poly raw material, will be organic
Silicon segment is keyed in polyurethane segment by block modified mode, improves the water resistance of film, is acted synergistically with other components,
It is formed with effect membrane waterproofing on corrugated board surface, improves the moisture resistance waterproofness of corrugated board.
Waterproof flame-retardant paint used in the present invention is to be dehydrated into charcoal catalysis with ammonium polyphosphate using Intumscent Flame Retardant System
Agent (acid source), melamine phosphate be foaming agent (gas source), carbon forming agent supplemented by pentaerythrite, and main carbon forming agent is polyurethane resin
(film forming binder) forms P, N system flame-retardant system.The surface that waterproof flame-retardant paint containing the Intumscent Flame Retardant System is formed applies
Layer, under flame or high temperature, ammonium polyphosphate, which is thermally decomposed to generate polyphosphoric acid and releases non-combustible gas, (waters down air and flammable
Gas), while the dehydration carbonization of auxiliary carbon forming agent pentaerythrite is covered on substrate at carbon skeleton structure (microporous foam carburization zone)
Surface；Ammonium polyphosphate itself decomposes heat absorption, reduces the temperature of surrounding.Main carbon forming agent-polyurethane resin in film layer is by thermal softening
Melting enters carbon skeleton structure, is further dehydrated into charcoal and expanded foamed in microcellular structure, is combined together with carbon skeleton structure, shape
At uniform, fine and close heat-insulated layer of charcoal is covered on substrate surface, while releasing non-flammable compressive gas, effective starvation and heat transfer,
Good fire retardation is played, corrugated board packaging material content is protected, prevents fire.
Waterproof flame-retardant paint used in the present invention, using nano silica as reinforcing filler, with isopropanol silica solution
Form solid packing is added in water paint, combined with film forming binder-organic silicon modified polyurethane resin, improve film
Mechanical strength and mechanical property；Nano silica is assisted as inorganic synergistic flame retardant with Intumscent Flame Retardant System used
Same-action is filled in layer of charcoal hole when film is by thermosetting layer of charcoal, enhances layer of charcoal compactness, and it is flame-out to play the role of only combustion.
Methyltrimethoxysilane is used as the modifying agent of fire retardant, reduces and eliminate the hydrophilic hydroxyl groups of silica particles,
Make silica dioxide granule that there is hydrophobicity, to further increase the water contact angle and water resistance of film.
Waterproof flame-retardant paint used in the present invention uses isopropanol for corrugated board surface wetting agent, polyoxyethylene nonyl phenyl second
Alkene ether is the use of corrugated board surface bleeding agent, assists and binder resin and effective flame-retardant composition in coating is promoted to infiltrate and seep
The paper superficial layer into corrugated board is penetrated into, the binding force of film and corrugated board substrate is on the one hand enhanced, film is not easy to peel off,
Effective flame-retardant composition not easily runs off, and very thin coating and less coating weight are that can reach the effect of water proof fire retardant；On the other hand
Binder resin and effective flame-retardant composition and corrugated board paper superficial layer it is fiber solidifying together, the filling tiny hole in surface and
Crackle forms fine and close Organic-inorganic composite glue-line, stops the intrusion of moisture and steam, greatly reduce the water imbibition of cardboard,
The mechanical strength and mechanical property of corrugated board are enhanced simultaneously.
Waterproof flame-retardant paint used in the present invention in the preparation, first uses methyltrimethoxysilane respectively to isopropanol silicon
Colloidal sol and Intumescent Retardant System (ammonium polyphosphate, melamine phosphate and pentaerythrite) are modified, and improve these components
Water resistance, and the compatibility with binder resin；Then again by organic silicon modified polyurethane aqueous dispersoid and modified silicasol and its
Its ingredient mixes and tells shearing dispersion that water paint is made.The preparation method is in advance modified flame-retardant composition, makes its tool
There is certain waterproofness, then mutually cooperateed with binder resin, there is fire-retardant and waterproof effect the aqueous painting of multifunctionality simultaneously
Material；Simple process, it is easy to operate, it is suitble to large-scale industrial production.
It is fixed first to carry out roll-type to corrugated board using coating machine for the preparation method of waterproof flame-retardant type corrugated board of the invention
Amount coating, coating is thin and coating weight is few, and coating speed is fast；Saturated vapor flash baking is used again, and drying time is short, does not influence watt
The shape and physical and chemical performance of corrugated paper board substrate.
Testing result shows the resulting waterproof flame-retardant type corrugated board of the present invention, is calculated as 5g/m in total coating weight with dry film2
In the case where left and right, pop strength has reached 1637kPa or more, side pressure strength reaches 8.65kN/m or more, and Punctured Strength reaches
11.90J or more, far beyond the intensity of substrate corrugated board；In the case that and coating weight thin in coating is few, corrugated paper is improved
The mechanical strength and mechanical property of plate.Compared with the corrugated board as substrate, using the anti-of waterproof flame-retardant paint of the invention
Water flame retardant type corrugated board, limit oxygen index (LOI) reach 31.7% or more, inflammable corrugated board are made to reach fire retardant rank.
In the vertical combustion time, average after flame time is only 3.0-3.2s, and averagely burning the time is only 2.0-2.1s, average charing length
Degree is only 17.1-18.0mm, meets requirement of the GB/T14656-2009 about fire-retardant cardboard combustibility, fireproof flame-retardant effect is bright
It is aobvious.Compared with the corrugated board as substrate, using the waterproof flame-retardant type corrugated board of waterproof flame-retardant paint of the invention, water is connect
Feeler is increased to 120 ° or more from 52.1 °, becomes hydrophobic surface from hydrophilic surface modification；Water absorption is from 24.6g/m2Under significantly
Drop to 1.15g/m2Hereinafter, having good moisture resistance waterproofness.
Waterproof flame-retardant type corrugated board of the invention, waterproof flame-retardant paint used is water paint, environmentally protective；This hair
It can reach good water proof fire retardant effect in the case that bright waterproof flame-retardant type corrugated board is thin in coating and coating weight is few, at
This is low, does not influence the geomery and processability of corrugated board, for flammable inflammable thing, the packed and transported of moisture absorption product easy to damp, peace
Quan Xinggao can prevent content water suction rotten and the generation of fire, and practicability is wide, with good economic efficiency.
Specific embodiment
The present invention is described further With reference to embodiment.
In specific embodiment, ammonium polyphosphate used is commercially available I type ammonium polyphosphate APP, the degree of polymerization 50.Melamine used
Amine phosphate is commercial goods MP (C3H9N6PO4), average grain diameter D50 is 2.5 μm.Nonylphenol polyoxyethylene ether used is commercially available
Commodity NP-40.
Isopropanol silica solution used is the nano silicon dioxide dispersion using isopropanol as dispersion solvent, and solid content is
30%, partial size 5-10nm.
The auxiliary agent is made of dispersing agent, defoaming agent and levelling agent；The mass ratio of the dispersing agent, defoaming agent and levelling agent
For 2.0:1.0:2.0.Wherein, the dispersing agent is aqueous dispersion Disper-715 (Tego Digao), commercial goods；It is described to disappear
Infusion is BYK-019 defoaming agent (BYK chemistry), commercial goods；The levelling agent is aqueous levelling agent Glidl450 (Tego enlightening
It is high), commercial goods.
In specific embodiment, the organic silicon modified polyurethane aqueous dispersoid is prepared by following methods:
A) under nitrogen protection, polyethers N210 (Mn=1000) and polyetherpolysilicone dihydric alcohol (Mn=4600) are mixed
Afterwards, it is first slowly added to isophorone diisocyanate and obtains pre-polymer mix, catalyst dibutyltindilaurylmercaptide silicic acid is added, 80
2h is reacted under the conditions of DEG C, obtains performed polymer；Initial n (- NCO)/n (- OH)=2.5, wherein n (- OH) refers to that polyethers 210 and polyethers are poly-
The total mole number of silicone glycols institute hydroxyl；The quality of polyetherpolysilicone dihydric alcohol accounts for pre-polymer mix gross mass
6%, the dosage of catalyst is the 0.03% of total polymerization material quality；
B) dihydromethyl propionic acid (dosage is the 4% of total polymerization material quality) is added in the performed polymer obtained by step a), it will
System is cooled to 60 DEG C after being warming up to 85 DEG C the reaction was continued 2h, sequentially adds 1,4-butanediol, (dosage is trihydroxy methyl propane
The 40% of total polymerization material quality) and acetone, 60 DEG C of reaction 30min are kept the temperature, system is down to room temperature, triethylamine is added and neutralizes
Deionized water is added after 15min (degree of neutralization 100%), high speed shear disperses 30min, and vacuum distillation removes acetone to get solid
The organic-silicon-modified self-crosslinkable polyurethane aqueous dispersion that content is 40%.
Embodiment 1
The waterproof flame-retardant paint for corrugated board of the present embodiment, including following components in percentage by weight: organosilicon
Modified polyurethane aqueous dispersions 50%, ammonium polyphosphate 10%, melamine phosphate 6.0%, pentaerythrite 6.0%, isopropanol
4.0%, isopropanol silica solution 3.0%, methyltrimethoxysilane 1.5%, nonylphenol polyoxyethylene ether 0.2%, auxiliary agent
0.5%, surplus is water.
The preparation method of the waterproof flame-retardant paint for corrugated board of the present embodiment, comprising the following steps:
1) the isopropanol silica solution of formula ratio is taken, the water of isopropanol silica solution quality 15% and the first of 1/3 formula ratio is added
Base trimethoxy silane is stirred to react 60min under the conditions of 50 DEG C, after be cooled to room temperature, obtain modified silicasol；
2) ammonium polyphosphate, melamine phosphate and the pentaerythrite for taking formula ratio, the methyl trimethoxy oxygen with 2/3 formula ratio
Base silane mixes and is ground to grain graininess≤3 μm, obtains mixing fire retardant；
3) organic silicon modified polyurethane aqueous dispersoid of formula ratio is taken, modified silicasol obtained by step 1) is added,
15min is stirred under 800rpm speed conditions, obtains modified base material；
4) after taking the isopropanol of formula ratio to mix with water, nonylphenol polyoxyethylene ether, auxiliary agent and the step of formula ratio is added
2) gained mixes fire retardant, after stirring 12min under 500rpm speed conditions, mixes with modified base material obtained by step 3),
Shearing dispersion 20min is under 1400rpm speed conditions to get the waterproof flame-retardant paint.
The preparation method of the waterproof flame-retardant type corrugated board of the present embodiment, comprising the following steps:
I) above-mentioned resulting waterproof flame-retardant paint is placed in coating machine, carries out roll-type on the two sides of corrugated board and quantitatively applies
Cloth designs one side coating amount with dry film and is calculated as 2.5g/m2；
Ii saturated vapor drying) is carried out to the corrugated board after coating, the pressure of saturated vapor is 1.2MPa, drying temperature
It is 140 DEG C, residence time 12s, is cooled to room temperature to get the waterproof flame-retardant type corrugated board.
Embodiment 2
The waterproof flame-retardant paint for corrugated board of the present embodiment, including following components in percentage by weight: organosilicon
Modified polyurethane aqueous dispersions 50%, ammonium polyphosphate 12%, melamine phosphate 5.0%, pentaerythrite 5.0%, isopropanol
4.5%, isopropanol silica solution 3.2%, methyltrimethoxysilane 1.8%, nonylphenol polyoxyethylene ether 0.15%, auxiliary agent
0.5%, surplus is water.
The preparation method of the waterproof flame-retardant paint for corrugated board of the present embodiment, comprising the following steps:
1) the isopropanol silica solution of formula ratio is taken, the methyl three of isopropanol silica solution quality 12% and 1/3 formula ratio is added
Methoxy silane is stirred to react 50min under the conditions of 60 DEG C, after be cooled to room temperature, obtain modified silicasol；
2) ammonium polyphosphate, melamine phosphate and the pentaerythrite for taking formula ratio, the methyl trimethoxy oxygen with 2/3 formula ratio
Base silane mixes and is ground to grain graininess≤3 μm, obtains mixing fire retardant；
3) organic silicon modified polyurethane aqueous dispersoid of formula ratio is taken, modified silicasol obtained by step 1) is added,
10min is stirred under 1000rpm speed conditions, obtains modified base material；
4) after taking the isopropanol of formula ratio to mix with water, nonylphenol polyoxyethylene ether, auxiliary agent and the step of formula ratio is added
2) gained mixes fire retardant, after stirring 15min under 400rpm speed conditions, mixes with modified base material obtained by step 3),
Shearing dispersion 25min is under 1200rpm speed conditions to get the waterproof flame-retardant paint.
The preparation method of the waterproof flame-retardant type corrugated board of the present embodiment, comprising the following steps:
I) above-mentioned resulting waterproof flame-retardant paint is placed in coating machine, carries out roll-type on the two sides of corrugated board and quantitatively applies
Cloth designs one side coating amount with dry film and is calculated as 2.5g/m2；
Ii saturated vapor drying) is carried out to the corrugated board after coating, the pressure of saturated vapor is 1.2MPa, drying temperature
It is 150 DEG C, residence time 10s, it is cooling up to waterproof flame-retardant type corrugated board.
Embodiment 3
The waterproof flame-retardant paint for corrugated board of the present embodiment, including following components in percentage by weight: organosilicon
Modified polyurethane aqueous dispersions 50%, ammonium polyphosphate 11%, melamine phosphate 5.0%, pentaerythrite 6.0%, isopropanol
5.0%, isopropanol silica solution 3.5%, methyltrimethoxysilane 1.8%, nonylphenol polyoxyethylene ether 0.1%, auxiliary agent
0.5%, surplus is water.
The preparation method of the waterproof flame-retardant paint for corrugated board of the present embodiment, comprising the following steps:
1) the isopropanol silica solution of formula ratio is taken, the methyl three of isopropanol silica solution quality 10% and 1/3 formula ratio is added
Methoxy silane is stirred to react 55min under the conditions of 55 DEG C, after be cooled to room temperature, obtain modified silicasol；
2) ammonium polyphosphate, melamine phosphate and the pentaerythrite for taking formula ratio, the methyl trimethoxy oxygen with 2/3 formula ratio
Base silane mixes and is ground to grain graininess≤3 μm, obtains mixing fire retardant；
3) organic silicon modified polyurethane aqueous dispersoid of formula ratio is taken, modified silicasol obtained by step 1) is added,
12min is stirred under 900rpm speed conditions, obtains modified base material；
4) after taking the isopropanol of formula ratio to mix with water, nonylphenol polyoxyethylene ether, auxiliary agent and the step of formula ratio is added
2) gained mixes fire retardant, after stirring 10min under 600rpm speed conditions, mixes with modified base material obtained by step 3),
Shearing dispersion 20min is under 1500rpm speed conditions to get the waterproof flame-retardant paint.
The preparation method of the waterproof flame-retardant type corrugated board of the present embodiment, comprising the following steps:
I) above-mentioned resulting waterproof flame-retardant paint is placed in coating machine, carries out roll-type on the two sides of corrugated board and quantitatively applies
Cloth designs one side coating amount with dry film and is calculated as 2.5g/m2；
Ii saturated vapor drying) is carried out to the corrugated board after coating, the pressure of saturated vapor is 1.2MPa, drying temperature
It is 160 DEG C, residence time 8s, it is cooling up to waterproof flame-retardant type corrugated board.
Experimental example
This experimental example uses commercially available corrugated board for substrate, and the preparation method that embodiment 1-3 is respectively adopted prepares anti-water resistance
Combustion type corrugated board, and products obtained therefrom is detected.
The substrate is triple wall board (A3A type), facial tissue A card 180g/m2, inner paper A card 180g/m2, corrugation Type B
115g/m2。
The results are shown in Table 1.
The performance test results of 1 waterproof flame-retardant type corrugated board of table
As it can be seen from table 1 the resulting waterproof flame-retardant type corrugated board of embodiment 1-3, is calculated as in total coating weight with dry film
5g/m2In the case where left and right, pop strength has reached 1637kPa or more, side pressure strength reaches 8.65kN/m or more, Punctured Strength
Reach 11.90J or more, far beyond 1254kPa, 6.79kN/m and 8.52J of substrate corrugated board.Testing result shows this
Invention gained waterproof flame-retardant type corrugated board, in the case that and coating weight thin in coating is few, has good mechanical strength and power
Learn performance.
Compared with the corrugated board as substrate, the resulting waterproof flame-retardant type corrugated board of embodiment 1-3, limit oxygen index
(LOI) reach 31.7% or more, inflammable corrugated board is made to reach fire retardant rank.In the vertical combustion time, when average afterflame
Between be only 3.0-3.2s, averagely burning the time is only 2.0-2.1s, and average char length is only 17.1-18.0mm.Experimental result
Show that the resulting waterproof flame-retardant type corrugated board of the present invention meets GB/T14656-2009 and wants about fire-retardant cardboard combustibility
It asks, fireproof flame-retardant effect is obvious, belongs to nonflammable material.
Compared with the corrugated board as substrate, the resulting waterproof flame-retardant type corrugated board of embodiment 1-3, water contact angle from
52.1 ° are increased to 120 ° or more, become hydrophobic surface from hydrophilic surface modification；Water absorption is from 24.6g/m2Sharp fall arrives
1.15g/m2Hereinafter, having good moisture resistance waterproofness.
Claims (8)
1. a kind of preparation method of waterproof flame-retardant type corrugated board, it is characterised in that: the following steps are included:
I) waterproof flame-retardant paint is placed in coating machine, carries out roll-type in the one or both sides of corrugated board and is quantitatively coated with, it is total to apply
Cloth amount is not less than 2.5g/m in terms of dry film2；
The waterproof flame-retardant paint includes following components in percentage by weight: organic silicon modified polyurethane aqueous dispersoid 48%-
52%, ammonium polyphosphate 10%-12%, melamine phosphate 5.0%-6.0%, pentaerythrite 5.0%-6.0%, isopropanol
4.0%-5.0%, isopropanol silica solution 3.0%-3.5%, methyltrimethoxysilane 1.5%-1.8%, polyoxyethylene nonyl phenyl second
Alkene ether 0.1%-0.2%, auxiliary agent 0.5%-1.0%, surplus are water；
Ii saturated vapor drying) is carried out to the corrugated board after coating, drying temperature is 140 DEG C -160 DEG C, residence time 8-
12s, cooling to obtain the final product.
2. the preparation method of waterproof flame-retardant type corrugated board according to claim 1, it is characterised in that: in step i), institute
It states coating weight and 2.5-25g/m is calculated as with dry film2。
3. the preparation method of waterproof flame-retardant type corrugated board according to claim 1, it is characterised in that: the organosilicon changes
Property polyurethane aqueous dispersion body solid content be 40%-45%.
4. the preparation method of waterproof flame-retardant type corrugated board according to claim 1, it is characterised in that: the organosilicon changes
Property polyurethane aqueous dispersion body be to react obtained with isophorone diisocyanate using polyethers N210, polyetherpolysilicone dihydric alcohol
Performed polymer, using dihydromethyl propionic acid, trimethylolpropane and 1,4-butanediol as chain extender, the self-crosslinkable polyurethane moisture of synthesis
Granular media.
5. the preparation method of waterproof flame-retardant type corrugated board according to claim 1, it is characterised in that: the isopropanol silicon
The solid content of colloidal sol is 30%-35%, partial size 5-10nm.
6. the preparation method of waterproof flame-retardant type corrugated board according to claim 1, it is characterised in that: the auxiliary agent includes
Dispersing agent, defoaming agent and levelling agent；The mass ratio of the dispersing agent, defoaming agent and levelling agent is (1.0-2.0): 1.0:(1.0-
2.0)。
7. the preparation method of waterproof flame-retardant type corrugated board according to claim 1, it is characterised in that: step ii) in, institute
The pressure for stating saturated vapor is 1.2-1.5MPa.
8. a kind of as preparation method of any of claims 1-7 prepares resulting waterproof flame-retardant type corrugated board.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111041889A (en) * | 2019-12-13 | 2020-04-21 | 保定钞票纸业有限公司 | Glue solution for paper surface treatment, paper treatment method, obtained paper and application thereof |
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