CN108795352A - A kind of preparation method of 0 grade of waterproof floor glue of new E - Google Patents
A kind of preparation method of 0 grade of waterproof floor glue of new E Download PDFInfo
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- CN108795352A CN108795352A CN201810789007.4A CN201810789007A CN108795352A CN 108795352 A CN108795352 A CN 108795352A CN 201810789007 A CN201810789007 A CN 201810789007A CN 108795352 A CN108795352 A CN 108795352A
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- Prior art keywords
- urea
- reaction kettle
- melamine
- added
- grade
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09J161/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic and acyclic or carbocyclic compounds
-
- 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
- C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08G12/34—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds and acyclic or carbocyclic compounds
- C08G12/36—Ureas; Thioureas
- C08G12/38—Ureas; Thioureas and melamines
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
The present invention discloses a kind of preparation method of 0 grade of waterproof floor glue of new E, it is characterised in that：The method carries out successively according to the following steps：It is first 2.4-2.5 according to molar ratio by formaldehyde, urea, melamine:1:The ratio of 0.8-0.15, is added in reaction kettle, and synthetic catalyst is added into reaction kettle, and the synthetic catalyst is the 1-1.5% of urea gross mass, and synthetic catalyst by sodium hydroxide and PVA according to mass ratio 1:1 ratio mixes, and the mixture pH value in reaction kettle is adjusted to 7.5-8,30min is kept the temperature after allowing reaction kettle to be warming up to 90-93 DEG C.This is a kind of of low cost, and easy to operate, available stability is good, environmental protection, the method for the E0 grade waterproof floor glue of low price.
Description
Technical field
The present invention relates to a kind of chemical field, especially a kind of preparation method of 0 grade of waterproof floor glue of new E.
Background technology
In the production of China's glued board and solid wooden floor board, adhesive be mainly phenolic resin, Lauxite, isocyanates and
Three component solid, powdery glue, wherein three component solid, powdery glue and isocyanates cost are higher, overall cost is in 8000-12000
Yuan/ton, and burst size of methanal is higher.Phenolic resin has excellent handing-over intensity and water resistance, but cured glue layer is at purple
Red has base material certain pollution, limits its use scope, overall cost is at 4000-5000 yuan/ton.Though Lauxite
So of low cost, for overall cost at 2000-3000 yuan/ton, curing rate is fast, but water resistance is poor, and glue-line is easy to aging, so only
The problems such as glued board bonding that can be used for low side uses, and there are serious formaldehyde pollutions.
Used so how to produce and can be used for high-end floor, and cost is relatively low, water resistance and glue-joint strength compared with
Height, and there is the adhesive of good environmental-protecting performance to become project.
Invention content
The present invention is to propose that one kind is of low cost to solve the above-mentioned deficiency present in the prior art, easy to operate, can
It is good to obtain stability, environmental protection, the method for the E0 grade waterproof floor glue of low price.
Technical solution of the invention is：A kind of preparation method of 0 grade of waterproof floor glue of new E, it is characterised in that：Institute
The method stated carries out successively according to the following steps：
A, first by formaldehyde, urea, melamine according to molar ratio be 2.4-2.5:1:The ratio of 0.8-0.15 is added to reaction
In kettle, and synthetic catalyst is added into reaction kettle, the synthetic catalyst is the 1-1.5% of urea gross mass, and synthesis is urged
Agent is by sodium hydroxide and PVA according to mass ratio 1:1 ratio mixes, by the mixture pH value in reaction kettle adjust to
7.5-8
B, 30min is kept the temperature after allowing reaction kettle to be warming up to 90-93 DEG C,
C, the mixture pH value in reaction kettle is adjusted to 6.5, and urea and melamine is added again into reaction kettle, and urine is added
The molar ratio of element and formaldehyde in reaction kettle after melamine, urea, melamine is 1.85-1.95:1:0.1-0.15, allows reaction
Temperature in the kettle is maintained at 90-92 DEG C, polycondensation to viscosity terminal,
D, the mixture pH value in reaction kettle is adjusted to 7.5-8.0, and urea and melamine is added for the third time into reaction kettle,
Be added after urea and melamine formaldehyde in reaction kettle, urea, melamine molar ratio be 1.45-1.55：1:0.2-0.3,
E, it allows reactor temperature to be maintained at 85 DEG C or more, and keeps the temperature 30min, be then cooled to 45 DEG C, adjust in reaction kettle and mix
Object pH value is closed to 7.5-8.0, obtains E0 grades of waterproof floor glue.
In a steps, formaldehyde, urea, melamine molar ratio be 2.44:1:0.11.
In the step c, the molar ratio that urea and formaldehyde in reaction kettle after melamine, urea, melamine is added is
1.91:1:0.13。
In the Step d, the molar ratio that urea and formaldehyde in reaction kettle after melamine, urea, melamine is added is
1.49:1:0.25。
In a steps, synthetic catalyst is the 1.2% of urea gross mass.
The present invention compared with the existing technology, has the following advantages that：
The preparation method of this kind of waterproof floor glue, introduces melamine in technical process, although increasing to a certain extent
Original cost, but overall cost is still under three component solid, powdery glue and isocyanates, face suitable with phenolic resin cost
Color is creamy white, pollution-free to base material.And in glue-joint strength and water resistance, melamine copolymeric condensation is introduced, is formed three-dimensional
Reticular structure encloses hydrophilic radical, while reducing degradation and the hydrolysis rate of resin, improves water resistance and is glued strong
Degree.Also increase its stability simultaneously, extends shelf life.In terms of environmental protection, introduce melamine reduces formaldehyde and urea first
Molar ratio, while melamine can be reacted with formaldehyde copolymer, generated melamine methylol, contained to drop low-free formaldehyde
Amount.In summary, it may be said that the waterproof floor glue that this method prepares has a variety of advantages, particularly suitable in ability
It is promoted and applied in domain, market prospects are very wide.
Specific implementation mode
The specific implementation mode of the present invention is described below.A kind of preparation method of 0 grade of waterproof floor glue of new E, according to
Following steps carry out successively：
It is first 2.4-2.5 according to molar ratio by formaldehyde, urea, melamine:1:The ratio of 0.8-0.15, is added to reaction kettle
In, aforementioned proportion is preferably 2.44:1:0.11；And synthetic catalyst is added into reaction kettle, the synthetic catalyst is urine
The 1-1.5% of plain gross mass, preferably 1.2%；And synthetic catalyst by sodium hydroxide and PVA according to mass ratio 1:1 ratio is mixed
It closes, the mixture pH value in reaction kettle is adjusted to 7.5-8,
Then, 30min is kept the temperature after allowing reaction kettle to be warming up to 90-93 DEG C,
Next, the mixture pH value in adjustment reaction kettle and urea and melamine is added into reaction kettle again to 6.5,
Be added after urea and melamine formaldehyde in reaction kettle, urea, melamine molar ratio be 1.85-1.95:1:0.1-0.15,
Aforementioned proportion is preferably 1.91:1:0.13, allow reactor temperature to be maintained at 90-92 DEG C, polycondensation to viscosity terminal,
Then the mixture pH value in reaction kettle is adjusted to 7.5-8.0, and urea and melamine is added for the third time into reaction kettle
Amine, be added after urea and melamine formaldehyde in reaction kettle, urea, melamine molar ratio be 1.45-1.55：1:0.2-
0.3, aforementioned proportion is preferably 1.49:1:0.25；
Finally, it allows reactor temperature to be maintained at 85 DEG C or more, and keeps the temperature 30min, be then cooled to 45 DEG C, adjust in reaction kettle
Mixture pH value obtains E0 grades of waterproof floor glue to 7.5-8.0.
Using the E0 grade waterproof floor glue prepared by this method, compareed with traditional floor glue performance：
One, physical index
Viscosity is measured using applying -4 glasss 25 degree.
Solid content is measured using drying box method.
Storage time is calculated according to viscosity and bonding force variation
Performance table
Two, overall cost compares
Cost and comparison
Comparative illustration, it is minimum in the E0 grade waterproof floor glue costs used suitable for floor, and environmental protection grade highest, while it is right
Base material is pollution-free.
Three, water boiling resistance Experimental comparison
Model acquires：
Three layers of composite floor board of solid wood.
By every square meter 360g or so glue-spread brushing.
E0 grades of waterproof floor glue are using cold pressing 30min, and hot pressing 105 degree of 7min are quiet to put 3 hours.
Use 80 degree of its water boiling resistance times of measurement of thermostat water bath.
Water boiling resistance is tested
Experiment shows that E0 grades of waterproof floor glue since NPVA and melamine are introduced, have excellent water resistance, with phenolic aldehyde tree
Lipid phase is worked as, and boiling is more than 3 hours not have any cracking phenomena in 80 degree of water.
Four, environmental protection grade
Burst size of methanal：40L condensed steam waters
Experiment shows that E0 grades of its process modification of waterproof floor glue are introduced with melamine, so that burst size of methanal is preferably minimized, reaches
The world requires most stringent of Japan F4 stars to require.
Claims (5)
1. a kind of preparation method of 0 grade of waterproof floor glue of new E, it is characterised in that：The method is according to the following steps successively
It carries out：
A, first by formaldehyde, urea, melamine according to molar ratio be 2.4-2.5:1:The ratio of 0.8-0.15 is added to reaction
In kettle, and synthetic catalyst is added into reaction kettle, the synthetic catalyst is the 1-1.5% of urea gross mass, and synthesis is urged
Agent is by sodium hydroxide and PVA according to mass ratio 1:1 ratio mixes, by the mixture pH value in reaction kettle adjust to
7.5-8
B, 30min is kept the temperature after allowing reaction kettle to be warming up to 90-93 DEG C,
C, the mixture pH value in reaction kettle is adjusted to 6.5, and urea and melamine is added again into reaction kettle, and urine is added
The molar ratio of element and formaldehyde in reaction kettle after melamine, urea, melamine is 1.85-1.95:1:0.1-0.15, allows reaction
Temperature in the kettle is maintained at 90-92 DEG C, polycondensation to viscosity terminal,
D, the mixture pH value in reaction kettle is adjusted to 7.5-8.0, and urea and melamine is added for the third time into reaction kettle,
Be added after urea and melamine formaldehyde in reaction kettle, urea, melamine molar ratio be 1.45-1.55：1:0.2-0.3,
E, it allows reactor temperature to be maintained at 85 DEG C or more, and keeps the temperature 30min, be then cooled to 45 DEG C, adjust in reaction kettle and mix
Object pH value is closed to 7.5-8.0, obtains E0 grades of waterproof floor glue.
2. the preparation method of 0 grade of waterproof floor glue of new E according to claim 1, it is characterised in that：In a steps,
Formaldehyde, urea, melamine molar ratio be 2.44:1:0.11.
3. the preparation method of 0 grade of waterproof floor glue of new E according to claim 1, it is characterised in that：In the step c,
Be added after urea and melamine formaldehyde in reaction kettle, urea, melamine molar ratio be 1.91:1:0.13.
4. the preparation method of 0 grade of waterproof floor glue of new E according to claim 1, it is characterised in that：In the Step d,
Be added after urea and melamine formaldehyde in reaction kettle, urea, melamine molar ratio be 1.49:1:0.25.
5. the preparation method of 0 grade of waterproof floor glue of new E according to claim 1, it is characterised in that：In a steps,
Synthetic catalyst is the 1.2% of urea gross mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810789007.4A CN108795352A (en) | 2018-07-18 | 2018-07-18 | A kind of preparation method of 0 grade of waterproof floor glue of new E |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810789007.4A CN108795352A (en) | 2018-07-18 | 2018-07-18 | A kind of preparation method of 0 grade of waterproof floor glue of new E |
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| CN108795352A true CN108795352A (en) | 2018-11-13 |
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| CN201810789007.4A Pending CN108795352A (en) | 2018-07-18 | 2018-07-18 | A kind of preparation method of 0 grade of waterproof floor glue of new E |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023094603A1 (en) | 2021-11-25 | 2023-06-01 | Foresa Technologies, S.L.U. | Method for the production of melamine-urea-formaldehyde resins, the resins obtained therewith, and applications of said resins |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002097434A (en) * | 2000-09-21 | 2002-04-02 | Sumitomo Bakelite Co Ltd | Adhesive for producing odorless wooden board |
| CN101244571A (en) * | 2008-03-21 | 2008-08-20 | 中国林业科学研究院林产化学工业研究所 | Method for manufacturing E0 level wood veneer |
| CN102775571A (en) * | 2012-07-23 | 2012-11-14 | 中国林业科学研究院林产化学工业研究所 | Method for preparing melamine-urea-formaldehyde resin adhesives for outdoor plywood low in formaldehyde release |
-
2018
- 2018-07-18 CN CN201810789007.4A patent/CN108795352A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002097434A (en) * | 2000-09-21 | 2002-04-02 | Sumitomo Bakelite Co Ltd | Adhesive for producing odorless wooden board |
| CN101244571A (en) * | 2008-03-21 | 2008-08-20 | 中国林业科学研究院林产化学工业研究所 | Method for manufacturing E0 level wood veneer |
| CN102775571A (en) * | 2012-07-23 | 2012-11-14 | 中国林业科学研究院林产化学工业研究所 | Method for preparing melamine-urea-formaldehyde resin adhesives for outdoor plywood low in formaldehyde release |
Non-Patent Citations (1)
| Title |
|---|
| 王巍: "E0级胶合板用脲醛树脂胶黏剂的研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023094603A1 (en) | 2021-11-25 | 2023-06-01 | Foresa Technologies, S.L.U. | Method for the production of melamine-urea-formaldehyde resins, the resins obtained therewith, and applications of said resins |
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Application publication date: 20181113 |