CN110128981A - A kind of modified flame-retardant urea-formaldehyde resin adhesive and preparation method thereof producing wood-based plate - Google Patents
A kind of modified flame-retardant urea-formaldehyde resin adhesive and preparation method thereof producing wood-based plate Download PDFInfo
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- 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
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- 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
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- 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
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/32—Phosphorus-containing compounds
- C08K2003/329—Phosphorus containing acids
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/38—Boron-containing compounds
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- C08L2201/02—Flame or fire retardant/resistant
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Abstract
The invention discloses a kind of modified flame-retardant urea-formaldehyde resin adhesive and preparation method thereof for producing wood-based plate, graphene 2-5%；Urea 200-260%；Diatom ooze 8-12%；Formalin 320-450%；Melamine 2-6%；Glutinous rice flour 8-12%；Crosslinked starch 20-35%；Sodium metasilicate 2-3%；Nano-ceramic powder 1-4%；Polyurethanes 6-9%；Fire retardant 23-35%；Polyvinyl alcohol 3-8%；Lead phthalaldehyde 3-5%；Methanol 10-30%；Solution is adjusted, adhesive performance of the present invention improves, and product environmental protection, comprehensive performance improves, and free formaldehyde is reduced, and glue stability is strong, and transparent glue solution degree is high, non-variegation, and weather resistance is strong.
Description
Technical field
The present invention relates to field of adhesive technology more particularly to a kind of modified flame-retardant urea-formaldehyde resin adhesive for producing wood-based plate and
Preparation method.
Background technique
Urea-formaldehyde resin adhesive is widely used in the production of wood-based plate, dosage account for the 90% of wood-based plate glue consumption with
On, it is the maximum kind of dosage in adhesive of artificial board.Lauxite has an incomparable advantage of other resins, mainly it
Raw material is sufficient, cheap, is cheapest in synthetic resin.In addition, Lauxite also has lot of advantages, such as it is glued strong
Degree is high, and rapidly, the glue-line after solidification is of light color for solidification, will not pollute the plate face for being glued object, good water solubility, needed for being easily modulated to
The appropriate viscosity and concentration wanted.It is well known that Lauxite also have the shortcomings that it is some obvious, in addition to resistance to ag(e)ing is poor,
Hot water resistance is poor, cannot function as outside outdoor wood-based plate glue, and fatal defects are that the wood-based plate being glued has Form aldehyde release.
In order to reach the requirement of environmental protection, it is often necessary to which the method for use is the Lauxite of low mole prop0rtion.But with mole
The reduction of ratio, the mechanical properties decrease of plate.Main cause is free formaldehyde in low molar ratio urea-formaldehyde resin, methylol group content etc.
It reduces, the decline of the reactivity of resin, frequently results in that resin's crosslinkage is low, and storage stability reduces, in same hot pressing condition
The solidification of lower Lauxite is crosslinked insufficient, has eventually led to the mechanical properties decrease of plate.Therefore, it is wanted in order to which environmental protection can be reached
Ask, and do not influence product mechanical property, can only by improve urea-formaldehyde resin adhesive dosage, reduce speed of production, and
The addition of glue process is cyanurotriamide modified, considerably increases production cost, reduces production efficiency, control of product quality difficulty adds
Greatly.By being modified to Lauxite, the solidification cross-linking properties of low molar ratio urea-formaldehyde resin is improved, to reduce Lauxite gluing
The dosage and raising speed of production of agent, will there is very big economic benefit for artificial board enterprise.
Summary of the invention
Of the invention provides a kind of modified flame-retardant urea-formaldehyde resin adhesive and preparation method thereof for producing wood-based plate.
The scheme of the invention is:
A kind of modified flame-retardant urea-formaldehyde resin adhesive producing wood-based plate, the raw material including following parts by weight:
It is made of as a preferred technical solution, the raw material of following parts by weight:
As a preferred technical solution, the crosslinked starch include cornstarch, tapioca, potato starch, sun from
The mixture of one or more of sub- starch, oxidized starch, carboxymethyl starch arbitrary proportion.
The fire retardant includes borax, phosphoric acid as a preferred technical solution,.
The present invention also provides a kind of preparation method method of modified flame-retardant urea-formaldehyde resin adhesive for producing wood-based plate, including it is following
Step:
1) by the formalin investment enamel reaction still of 320-450% parts by weight, pH value is tuned into solution is adjusted
Alkalinity, then to the polyvinyl alcohol of 3-8% parts by weight, the urea of 100-140% parts by weight is added into enamel reaction still, by it
It is warming up to 90-95 DEG C, reacts 40-50min；
2) after reacting, the methanol of 10-30% parts by weight, the trimerization of 1-2% parts by weight are added after enamel reaction still cooling
Cyanamide, to polycondensation after with adjust solution by enamel reaction still solution pH value adjust to 7.5-8.8, be warming up to 75-80
DEG C, then the urea of investment 100-120% parts by weight is reacted in enamel reaction still；
3) after reaction, the melamine of 1-4% parts by weight and the neck benzene diformazan of 3-5% parts by weight is added in step 2)
Aldehyde, stirs 15-30min, vacuum distillation, and gained formaldehyde recycles；
4) continue fire retardant, 8-12% parts by weight that ten minutes addition 23-35% parts by weight are kept the temperature after being warming up to 85-90 DEG C
Diatom ooze, 2-5% parts by weight graphene, 1-4% parts by weight nano-ceramic powder, stir evenly, react 30-35min；
5) step 4) enamel reaction still cools to after 50 DEG C the glutinous rice flour for putting into 8-12% parts by weight inward, 20-35% weight
Measure the crosslinked starch of part, the sodium metasilicate of 2-3% parts by weight, 6-9% parts by weight polyurethanes, stir ten minutes, uniformly
After be cooled to 40 DEG C hereinafter, with adjust solution adjust pH value 7.5-8.0, be down to room temperature discharging.
The adjusting solution includes sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid, nitric acid, sodium carbonate, carbon as a preferred technical solution,
The mixture of one or more of sour hydrogen sodium, sodium hydroxide and potassium hydroxide arbitrary proportion.
As a preferred technical solution, the crosslinked starch include cornstarch, tapioca, potato starch, sun from
The mixture of one or more of sub- starch, oxidized starch, carboxymethyl starch arbitrary proportion.
The fire retardant includes borax, phosphoric acid as a preferred technical solution,.
By adopting the above-described technical solution, a kind of modified flame-retardant urea-formaldehyde resin adhesive for producing wood-based plate and its preparation side
Method, 1) by the formalin investment enamel reaction still of 320-450% parts by weight, pH value is tuned into alkalinity with solution is adjusted,
Then to the polyvinyl alcohol of 3-8% parts by weight, the urea of 100-140% parts by weight is added into enamel reaction still, heated up
To 90-95 DEG C, 40-50min is reacted；2) after reacting, methanol, the 1- of 10-30% parts by weight are added after enamel reaction still cooling
The melamine of 2% parts by weight, to polycondensation after the pH value of solution in enamel reaction still is adjusted to 7.5- with adjusting solution
8.8, it is warming up to 75-80 DEG C, then the urea of investment 100-120% parts by weight is reacted in enamel reaction still；3) step
2) melamine of 1-4% parts by weight and the neck phthalaldehyde of 3-5% parts by weight after reaction, is added, stirs 15-30min,
Vacuum distillation, gained formaldehyde recycle；4) continue to keep the temperature after being warming up to 85-90 DEG C ten minutes and 23-35% parts by weight are added
Fire retardant, the diatom ooze of 8-12% parts by weight, the graphene of 2-5% parts by weight, 1-4% parts by weight nano-ceramic powder, stirring are equal
It is even, react 30-35min；5) step 4) enamel reaction still cool to after 50 DEG C put into inward 8-12% parts by weight glutinous rice flour,
The crosslinked starch of 20-35% parts by weight, the sodium metasilicate of 2-3% parts by weight, 6-9% parts by weight polyurethanes, stirring ten
Minute, 40 DEG C are cooled to after uniform hereinafter, being down to room temperature discharging with solution adjusting pH value 7.5-8.0 is adjusted.
Advantages of the present invention: adhesive performance improves, and product environmental protection, flame retardant effect is obvious, and is greatly improved, comprehensive
It closes performance to improve, free formaldehyde is reduced, and glue stability is strong, and transparent glue solution degree is high, non-variegation, effectively infiltration of the isolation to timber
Thoroughly, the drying evaporation loss of resin glue when while avoiding dry, weatherability is improved after testing using the present invention,
Service life is improved, while can be used for outdoor application.
Specific embodiment
In order to make up the above deficiency, the present invention provides a kind of modified flame-retardant urea-formaldehyde resin adhesive for producing wood-based plate and its systems
Preparation Method is to solve the problems in above-mentioned background technique.
A kind of modified flame-retardant urea-formaldehyde resin adhesive producing wood-based plate, the raw material including following parts by weight:
It is made of the raw material of following parts by weight:
The crosslinked starch includes cornstarch, tapioca, potato starch, cationic starch, oxidized starch, carboxylic first
The mixture of one or more of base starch arbitrary proportion.
The fire retardant includes borax, phosphoric acid.
The present invention also provides a kind of preparation method method of modified flame-retardant urea-formaldehyde resin adhesive for producing wood-based plate, including it is following
Step:
1) by the formalin investment enamel reaction still of 320-450% parts by weight, pH value is tuned into solution is adjusted
Alkalinity, then to the polyvinyl alcohol of 3-8% parts by weight, the urea of 100-140% parts by weight is added into enamel reaction still, by it
It is warming up to 90-95 DEG C, reacts 40-50min；
2) after reacting, the methanol of 10-30% parts by weight, the trimerization of 1-2% parts by weight are added after enamel reaction still cooling
Cyanamide, to polycondensation after with adjust solution by enamel reaction still solution pH value adjust to 7.5-8.8, be warming up to 75-80
DEG C, then the urea of investment 100-120% parts by weight is reacted in enamel reaction still；
3) after reaction, the melamine of 1-4% parts by weight and the neck benzene diformazan of 3-5% parts by weight is added in step 2)
Aldehyde, stirs 15-30min, vacuum distillation, and gained formaldehyde recycles；
4) continue fire retardant, 8-12% parts by weight that ten minutes addition 23-35% parts by weight are kept the temperature after being warming up to 85-90 DEG C
Diatom ooze, 2-5% parts by weight graphene, 1-4% parts by weight nano-ceramic powder, stir evenly, react 30-35min；
5) step 4) enamel reaction still cools to after 50 DEG C the glutinous rice flour for putting into 8-12% parts by weight inward, 20-35% weight
Measure the crosslinked starch of part, the sodium metasilicate of 2-3% parts by weight, 6-9% parts by weight polyurethanes, stir ten minutes, uniformly
After be cooled to 40 DEG C hereinafter, with adjust solution adjust pH value 7.5-8.0, be down to room temperature discharging.
The adjusting solution includes sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid, nitric acid, sodium carbonate, sodium bicarbonate, sodium hydroxide and hydrogen
The mixture of one or more of potassium oxide arbitrary proportion.
The crosslinked starch includes cornstarch, tapioca, potato starch, cationic starch, oxidized starch, carboxylic first
The mixture of one or more of base starch arbitrary proportion.
The fire retardant includes borax, phosphoric acid.
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment is closed, the present invention is further explained.
Embodiment 1:
1) by the formalin investment enamel reaction still of 320% parts by weight, pH value is tuned into alkalinity with solution is adjusted,
Then to the polyvinyl alcohol of 3% parts by weight, the urea of 100% parts by weight is added into enamel reaction still, 90 DEG C are warming up to,
React 400min；
2) after reacting, the methanol of 10% parts by weight, the melamine of 1% parts by weight are added after enamel reaction still cooling,
With pH value adjusting of the solution by solution in enamel reaction still is adjusted to 7.5-8.8 after to polycondensation, 75 DEG C are warming up to, it is then past
The urea of 100% parts by weight of investment is reacted in enamel reaction still；
3) step 2) after reaction, is added the melamine of 1% parts by weight and the neck phthalaldehyde of 3% parts by weight, stirs
15min is mixed, is evaporated under reduced pressure, gained formaldehyde recycles；
4) continue to keep the temperature after being warming up to 85 DEG C be added within ten minutes the fire retardant of 23% parts by weight, 8% parts by weight diatom ooze,
The graphene of 2% parts by weight, 1% parts by weight nano-ceramic powder, stir evenly, and react 30min；
5) step 4) enamel reaction still cools to after 50 DEG C the glutinous rice flour, 20% parts by weight for putting into 8% parts by weight inward
Crosslinked starch, the sodium metasilicate of 2% parts by weight, 6% parts by weight polyurethanes, stir ten minutes, uniformly after be cooled to 40
DEG C hereinafter, with adjust solution adjust pH value 7.5, be down to room temperature discharging.
The adjusting solution includes sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid, nitric acid, sodium carbonate, sodium bicarbonate, sodium hydroxide and hydrogen
The mixture of one or more of potassium oxide arbitrary proportion.
The crosslinked starch includes cornstarch, tapioca, potato starch, cationic starch, oxidized starch, carboxylic first
The mixture of one or more of base starch arbitrary proportion.
The fire retardant includes borax, phosphoric acid.
Embodiment 2:
1) by the formalin investment enamel reaction still of 450% parts by weight, pH value is tuned into alkalinity with solution is adjusted,
Then to the polyvinyl alcohol of 8% parts by weight, the urea of 140% parts by weight is added into enamel reaction still, 95 DEG C are warming up to,
React 50min；
2) after reacting, the methanol of 30% parts by weight, the melamine of 2% parts by weight are added after enamel reaction still cooling,
With pH value adjusting of the solution by solution in enamel reaction still is adjusted to 8.8 after to polycondensation, 80 DEG C are warming up to, then toward enamel
The urea of 120% parts by weight of investment is reacted in reaction kettle；
3) step 2) after reaction, is added the melamine of 4% parts by weight and the neck phthalaldehyde of 5% parts by weight, stirs
15-30min is mixed, is evaporated under reduced pressure, gained formaldehyde recycles；
4) continue to keep the temperature ten minutes diatoms that the fire retardant of 35% parts by weight, 12% parts by weight is added after being warming up to 90 DEG C
Mud, the graphene of 5% parts by weight, 4% parts by weight nano-ceramic powder, stir evenly, and react 35min；
5) step 4) enamel reaction still cools to after 50 DEG C the glutinous rice flour, 35% parts by weight for putting into 12% parts by weight inward
Crosslinked starch, the sodium metasilicate of 3% parts by weight, 9% parts by weight polyurethanes, stir ten minutes, uniformly after be cooled to 40
DEG C hereinafter, with adjust solution adjust pH value 8.0, be down to room temperature discharging.
The adjusting solution includes sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid, nitric acid, sodium carbonate, sodium bicarbonate, sodium hydroxide and hydrogen
The mixture of one or more of potassium oxide arbitrary proportion.
The crosslinked starch includes cornstarch, tapioca, potato starch, cationic starch, oxidized starch, carboxylic first
The mixture of one or more of base starch arbitrary proportion.
The fire retardant includes borax, phosphoric acid.
Embodiment 3:
1) by the formalin investment enamel reaction still of 400% parts by weight, pH value is tuned into alkalinity with solution is adjusted,
Then to the polyvinyl alcohol of 5% parts by weight, the urea of 120% parts by weight is added into enamel reaction still, 95 DEG C are warming up to,
React 50min；
2) after reacting, the methanol of 25% parts by weight, the melamine of 2% parts by weight are added after enamel reaction still cooling,
With pH value adjusting of the solution by solution in enamel reaction still is adjusted to 8.8 after to polycondensation, 80 DEG C are warming up to, then toward enamel
The urea of 135% parts by weight of investment is reacted in reaction kettle；
3) step 2) after reaction, is added the melamine of 3% parts by weight and the neck phthalaldehyde of 4% parts by weight, stirs
30min is mixed, is evaporated under reduced pressure, gained formaldehyde recycles；
4) continue to keep the temperature ten minutes diatoms that the fire retardant of 25% parts by weight, 10% parts by weight is added after being warming up to 90 DEG C
Mud, the graphene of 3% parts by weight, 1% parts by weight nano-ceramic powder, stir evenly, and react 30-35min；
5) step 4) enamel reaction still cools to after 50 DEG C the glutinous rice flour, 22% parts by weight for putting into 10% parts by weight inward
Crosslinked starch, the sodium metasilicate of 2% parts by weight, 6% parts by weight polyurethanes, stir ten minutes, uniformly after be cooled to 40
DEG C hereinafter, with adjust solution adjust pH value 7.5, be down to room temperature discharging.
The adjusting solution includes sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid, nitric acid, sodium carbonate, sodium bicarbonate, sodium hydroxide and hydrogen
The mixture of one or more of potassium oxide arbitrary proportion.
The crosslinked starch includes cornstarch, tapioca, potato starch, cationic starch, oxidized starch, carboxylic first
The mixture of one or more of base starch arbitrary proportion.
The fire retardant includes borax, phosphoric acid.
Finished product in Example 3 is added on flame-retardant board on multidaylight press, whole process do not occur abnormal haftplatte,
Big gun plate phenomenon, to flame-retardant board carry out just, in, the finished product inspection in latter stage, every physical and chemical index is up to standard, and burst size of methanal is by original
8Mg/100g fall below 5Mg/100g, fire-retardant rank is also far beyond 8624-2012B1 grade standard.
The hardness of flame-retardant board is improved, while being capable of moisture retardant.
The above shows and describes the basic principle, main features and advantages of the invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent circle.
Claims (8)
1. a kind of modified flame-retardant urea-formaldehyde resin adhesive for producing wood-based plate, which is characterized in that the raw material including following parts by weight:
2. a kind of modified flame-retardant urea-formaldehyde resin adhesive for producing wood-based plate as described in claim 1, feature exists, by following weight
The raw material composition of part:
3. a kind of modified flame-retardant urea-formaldehyde resin adhesive for producing wood-based plate as described in claim 1,2, feature exist:
The crosslinked starch includes cornstarch, tapioca, potato starch, cationic starch, oxidized starch, carboxymethyl shallow lake
The mixture of one or more of powder arbitrary proportion.
4. a kind of modified flame-retardant urea-formaldehyde resin adhesive for producing wood-based plate as described in claim 1,2, feature exist: described fire-retardant
Agent includes borax, phosphoric acid.
5. a kind of preparation method for preparing the modified flame-retardant urea-formaldehyde resin adhesive of production wood-based plate as described in claim 1, feature
It is, including the following steps:
1) by the formalin investment enamel reaction still of 320-450% parts by weight, pH value is tuned into alkalinity with solution is adjusted,
Then to the polyvinyl alcohol of 3-8% parts by weight, the urea of 100-140% parts by weight is added into enamel reaction still, heated up
To 90-95 DEG C, 40-50min is reacted；
2) after reacting, the methanol of 10-30% parts by weight, the melamine of 1-2% parts by weight are added after enamel reaction still cooling,
With pH value adjusting of the solution by solution in enamel reaction still is adjusted to 7.5-8.8 after to polycondensation, it is warming up to 75-80 DEG C, with
The urea that 100-120% parts by weight are put into enamel reaction still afterwards is reacted；
3) step 2) after reaction, is added the melamine of 1-4% parts by weight and the neck phthalaldehyde of 3-5% parts by weight, stirs
15-30min is mixed, is evaporated under reduced pressure, gained formaldehyde recycles；
4) continue to keep the temperature the ten minutes silicon that the fire retardant of 23-35% parts by weight, 8-12% parts by weight is added after being warming up to 85-90 DEG C
Algal gel, the graphene of 2-5% parts by weight, 1-4% parts by weight nano-ceramic powder, stir evenly, and react 30-35min；
5) step 4) enamel reaction still cools to after 50 DEG C the glutinous rice flour for putting into 8-12% parts by weight inward, 20-35% parts by weight
Crosslinked starch, the sodium metasilicate of 2-3% parts by weight, 6-9% parts by weight polyurethanes, stir ten minutes, uniformly after drop
Temperature, hereinafter, with solution adjusting pH value 7.5-8.0 is adjusted, is down to room temperature discharging to 40 DEG C.
6. a kind of preparation method for the modified flame-retardant urea-formaldehyde resin adhesive for producing wood-based plate as claimed in claim 5, feature exist
In: the adjusting solution includes sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid, nitric acid, sodium carbonate, sodium bicarbonate, sodium hydroxide and hydroxide
The mixture of one or more of potassium arbitrary proportion.
7. a kind of preparation method for the modified flame-retardant urea-formaldehyde resin adhesive for producing wood-based plate as claimed in claim 5, feature exist
In: the crosslinked starch includes cornstarch, tapioca, potato starch, cationic starch, oxidized starch, carboxymethyl shallow lake
The mixture of one or more of powder arbitrary proportion.
8. a kind of preparation method for the modified flame-retardant urea-formaldehyde resin adhesive for producing wood-based plate as claimed in claim 5, feature exist
In: the fire retardant includes borax, phosphoric acid.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112920676A (en) * | 2021-01-22 | 2021-06-08 | 冯洺章 | Method for simultaneously forming paint film and printing color pattern on woodware |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112920676A (en) * | 2021-01-22 | 2021-06-08 | 冯洺章 | Method for simultaneously forming paint film and printing color pattern on woodware |
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