CN109137603A - A kind of Lauxite gum stabilizing agents and its application method - Google Patents
A kind of Lauxite gum stabilizing agents and its application method Download PDFInfo
- Publication number
- CN109137603A CN109137603A CN201810980798.9A CN201810980798A CN109137603A CN 109137603 A CN109137603 A CN 109137603A CN 201810980798 A CN201810980798 A CN 201810980798A CN 109137603 A CN109137603 A CN 109137603A
- Authority
- CN
- China
- Prior art keywords
- lauxite
- stabilizer
- stabilizing agents
- application method
- urea
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/47—Condensation polymers of aldehydes or ketones
- D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
- D21H17/15—Polycarboxylic acids, e.g. maleic acid
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/66—Salts, e.g. alums
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a kind of Lauxite gum stabilizing agents and its application methods, stabilizer is prepared by organic acid and caustic alkali, adjust pH to 6.7~7.1, metal salt is added to form, its each component mass fraction are as follows: acylate, including unreacted organic acid or caustic alkali are 48%~58%, metal salt is 1%~2%, and water is 40%~50%.Its application method are as follows: after urea-formaldehyde resin adhesive prepares, the stabilizer is added, stirs evenly.Lauxite gum stabilizing agents of the present invention are prepared simply, and convenient transportation is low in cost, is added in the urea-formaldehyde resin adhesive prepared, stirs evenly, easy to use, there is positive effect.
Description
Technical field
The present invention relates to the stabilizer of a kind of macromolecule glue and its application method, specifically a kind of impregnated paper that is applied to is used
The stabilizer and its application method of urea-formaldehyde resin adhesive.
Background technique
Urea-formaldehyde resin adhesive is that under the action of catalyst, prepolymer made of urea and formaldehyde condensation, urea-formaldehyde resin adhesive is in people
It makes in plate industry and is widely applied.The timber industry and wood-based panel industry in China have obtained quick development, the demand of wood-based plate
Also increasing, it is also just widely applied and is used applied to the urea-formaldehyde resin adhesive in wood-based panel industry.
Urea-formaldehyde resin adhesive is the performed polymer containing polyhydroxy and amino, by the condensation between these polyhydroxy and amino,
Performed polymer can further be condensed as high-molecular compound, thus solidification and hardening, here it is Lauxite adhesive curings.It will impregnate
When on substrate, the urea-formaldehyde resin adhesive performed polymer solidification on impregnated paper is needed with hardening, but for not using for paper hot pressing
Urea-formaldehyde resin adhesive, urea-formaldehyde resin adhesive performed polymer intermolecular cross-linking reaction generate macromolecular compound, lead to urea-formaldehyde resin adhesive
Viscosity increases, and permeability reduces or even micelle is precipitated, agglomeration is rotten, and such Lauxite colloidin is to use.Mesh
Before, urea-formaldehyde resin adhesive can only be stored 3-4 days in summer, in order to avoid this problem, enterprise use method be now do it is current, it is low
Temperature storage comes to the use of urea-formaldehyde resin adhesive, transport, storage tape a lot of constant in this way.Also there is document report by improving raw material
Purity reduces the impurity contents such as iron ion, sulfate radical, salt, to inhibit formaldehyde in urea-formaldehyde resin adhesive to convert formic acid, to inhibit
Resin glue deep condensation, crosslinking.Cost of material will certainly be greatly improved by improving material purity, and by technical restriction, be improved empty
Between be also limited.The stability of urea-formaldehyde resin adhesive is improved also by the preparation process condition for improving urea-formaldehyde resin adhesive, such as
Urea-formaldehyde resin adhesive is modified with saccharide compound, improves the better Uron ring structure content of stability in resin glue, in turn
Improve urea-formaldehyde resin adhesive stability.The method not only complicates the preparation process of urea-formaldehyde resin adhesive, and improves cost.
Summary of the invention
It is an object of the invention to overcome the shortcomings of above-mentioned raising urea-formaldehyde resin adhesive stability approach, a kind of cost is provided
It is low, and the good Lauxite gum stabilizing agents of urea-formaldehyde resin adhesive compatibility and method convenient to use, to meet in wood-based plate
To the demand of urea-formaldehyde resin adhesive stability in production.
The Lauxite gum stabilizing agents are to be prepared by organic acid and caustic alkali, adjust pH to 6.7~7.1, add metal
Salt forms, its composition is as follows by mass percentage:
Metal salt 1%~2%
Acylate, unreacted organic acid or caustic alkali 48%~58%
Water 40%~50%
In above stabilizer composition, the stronger amido shape of activity in the metal ion and urea-formaldehyde resin adhesive in metal salt
At coordination, make urea-formaldehyde resin adhesive in charged particle state, so that colloid micelle be inhibited to reunite.
In addition, organic acid and causticity alkali neutralization, constitute multicomponent Conjugate Acid-Base Pairs, and after being added in urea-formaldehyde resin adhesive, soda acid
The pH balance of maintenance system is mutually restricted between, so that urea-formaldehyde resin adhesive micelle be inhibited to condense, is extended urea-formaldehyde resin adhesive and is stablized
Time.
It is magnesium sulfate, magnesium nitrate, magnesium chloride, aluminum sulfate, nitre that above-mentioned Lauxite gum stabilizing agents, which prepare metal salt used,
Sour aluminium, aluminium chloride, nickel nitrate, one kind of calcium chloride or several mixtures.
It is acetic acid, citric acid, benzoic acid, such water solubility that above-mentioned Lauxite gum stabilizing agents, which prepare organic acid used,
A kind of or several mixture in acid.
It is one of sodium hydroxide, potassium hydroxide or several that above-mentioned Lauxite gum stabilizing agents, which prepare caustic alkali used,
The mixture of kind.
The application method of above-mentioned Lauxite gum stabilizing agents are as follows: after urea-formaldehyde resin adhesive prepares, the stabilizer is added, stirs
Uniformly.
Above-mentioned Lauxite gum stabilizing agents additional amount is the 0.10%~1.00% of urea-formaldehyde resin adhesive quality.
By being largely formulated preparation, stablizing effect test and the influence experiment of additional amount and analysis have determined these stabilizers
Stabilizer is added by the determining additional amount of experiment in urea-formaldehyde resin adhesive in the combination and additional amount range of recipe ingredient, can be with
Put urea-formaldehyde resin adhesive 7 days more than stabilizer at normal temperature than being not added, the longer time keeps the state of clear, there is apparent effect
Fruit.
Above-mentioned Lauxite gum stabilizing agents are prepared simply, and convenient transportation is low in cost, is added to the Lauxite prepared
In glue, stir evenly, it is easy to use, there is positive effect.
Specific embodiment
The application is illustrated and further understood below in conjunction with specific embodiment, but embodiment is only used as example
Son provides, and is not intended as whole technical solutions of the invention, is not limited overall technical solution.It is all have it is identical or
Similar technique feature simply changes or replaces, the category scope of the present invention.
Embodiment
According to preparation Lauxite gum stabilizing agents shown in table 1.The stabilizer prepared is added to ureaformaldehyde according to different proportion
It in resin glue, is compared with the urea-formaldehyde resin adhesive for not adding stabilizer, investigates various stabilizers to Lauxite for 35 DEG C at room temperature
The effect of glue stability.Specific stablizing effect is shown in Table 2.
Stabilizer is used in the experiment of table 1
2 stabilizer of table applies phenomenon in urea-formaldehyde resin adhesive
Remarks: gel is rotten for " --- " expression Lauxite, loses utility value.
2 result of table explanation, Lauxite gum stabilizing agents of the invention can extend the storage time of urea-formaldehyde resin adhesive, can make
Urea-formaldehyde resin adhesive never degenerates for more time；The additive amount of stabilizer is different, and the extended time is also different, real compared with blank
29 are tested, with 6#When urea-formaldehyde resin adhesive is added in 0.3% ratio in Lauxite gum stabilizing agents, the stabilization time of urea-formaldehyde resin adhesive is obtained
To significantly extending, the urea-formaldehyde resin adhesive than being not added with stabilizer can put 7 day time more.
Claims (6)
1. a kind of Lauxite gum stabilizing agents and its application method, it is characterised in that the stabilizer is matched by organic acid and caustic alkali
System adjusts pH to 6.7~7.1, adds metal salt and form, its composition is as follows by mass percentage:
Metal salt 1%~2%
Acylate, including unreacted organic acid or caustic alkali 48%~58%
Water 40%~50%.
2. one kind Lauxite gum stabilizing agents according to claim 1 and its application method, it is characterised in that the stabilizer
Prepare metal salt used be magnesium sulfate, magnesium nitrate, magnesium chloride, aluminum sulfate, aluminum nitrate, aluminium chloride, nickel nitrate, calcium chloride one
Kind or several mixtures.
3. one kind Lauxite gum stabilizing agents according to claim 1 and its application method, it is characterised in that the stabilizer
Organic acid used is prepared as one of water soluble acid as acetic acid, citric acid, benzoic acid or several mixtures.
4. one kind Lauxite gum stabilizing agents according to claim 1 and its application method, it is characterised in that the stabilizer
Preparing caustic alkali used is one of sodium hydroxide, potassium hydroxide or several mixtures.
5. one kind Lauxite gum stabilizing agents according to claim 1 and its application method, it is characterised in that the stabilizer
Application method is as follows: after urea-formaldehyde resin adhesive prepares, the stabilizer is added, stirs evenly.
6. one kind Lauxite gum stabilizing agents according to claim 4 and its application method, it is characterised in that the stabilizer
Additional amount is the 0.10%~1.00% of urea-formaldehyde resin adhesive quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810980798.9A CN109137603A (en) | 2018-08-27 | 2018-08-27 | A kind of Lauxite gum stabilizing agents and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810980798.9A CN109137603A (en) | 2018-08-27 | 2018-08-27 | A kind of Lauxite gum stabilizing agents and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109137603A true CN109137603A (en) | 2019-01-04 |
Family
ID=64828251
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810980798.9A Pending CN109137603A (en) | 2018-08-27 | 2018-08-27 | A kind of Lauxite gum stabilizing agents and its application method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113928A (en) * | 1994-06-09 | 1995-12-27 | 林业部林产工业规划设计院 | Urea-formualdehyde resin glue and its preparing method |
| CN1138616A (en) * | 1995-06-06 | 1996-12-25 | 博登公司 | Catalytic composition and method for curing ureaformaldehyde resin |
| EP0913409A1 (en) * | 1997-10-30 | 1999-05-06 | Elf Atochem S.A. | Process for the preparation of thermosetting urea formaldehyde ammonia resins and their use as impregnating resins |
| CN101012358A (en) * | 2007-02-05 | 2007-08-08 | 永港伟方(北京)科技有限公司 | Increment agent for urea-formaldehyde resin, preparing method thereof and urea-formaldehyde resin adhesive |
| CN101870773A (en) * | 2009-04-22 | 2010-10-27 | 永港伟方（北京）科技股份有限公司 | Composite urea formaldehyde resin curing agent as well as preparation method and application thereof |
| CN102417802A (en) * | 2011-11-22 | 2012-04-18 | 黑龙江省龙顺达建筑材料有限公司 | Urea-formaldehyde resin adhesive and preparation method thereof |
| CN103468185A (en) * | 2013-09-27 | 2013-12-25 | 徐州安联木业有限公司 | Formula and preparation method of urea-formaldehyde resin adhesive for glued board |
| CN104559875A (en) * | 2013-10-10 | 2015-04-29 | 江苏肯帝亚木业有限公司 | Melamine modified urea-formaldehyde resin adhesive and preparation method thereof |
-
2018
- 2018-08-27 CN CN201810980798.9A patent/CN109137603A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113928A (en) * | 1994-06-09 | 1995-12-27 | 林业部林产工业规划设计院 | Urea-formualdehyde resin glue and its preparing method |
| CN1138616A (en) * | 1995-06-06 | 1996-12-25 | 博登公司 | Catalytic composition and method for curing ureaformaldehyde resin |
| EP0913409A1 (en) * | 1997-10-30 | 1999-05-06 | Elf Atochem S.A. | Process for the preparation of thermosetting urea formaldehyde ammonia resins and their use as impregnating resins |
| CN101012358A (en) * | 2007-02-05 | 2007-08-08 | 永港伟方(北京)科技有限公司 | Increment agent for urea-formaldehyde resin, preparing method thereof and urea-formaldehyde resin adhesive |
| CN101870773A (en) * | 2009-04-22 | 2010-10-27 | 永港伟方（北京）科技股份有限公司 | Composite urea formaldehyde resin curing agent as well as preparation method and application thereof |
| CN102417802A (en) * | 2011-11-22 | 2012-04-18 | 黑龙江省龙顺达建筑材料有限公司 | Urea-formaldehyde resin adhesive and preparation method thereof |
| CN103468185A (en) * | 2013-09-27 | 2013-12-25 | 徐州安联木业有限公司 | Formula and preparation method of urea-formaldehyde resin adhesive for glued board |
| CN104559875A (en) * | 2013-10-10 | 2015-04-29 | 江苏肯帝亚木业有限公司 | Melamine modified urea-formaldehyde resin adhesive and preparation method thereof |
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Application publication date: 20190104 |