CN109577075A - 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
- CN109577075A CN109577075A CN201811373463.7A CN201811373463A CN109577075A CN 109577075 A CN109577075 A CN 109577075A CN 201811373463 A CN201811373463 A CN 201811373463A CN 109577075 A CN109577075 A CN 109577075A
- Authority
- CN
- China
- Prior art keywords
- lauxite
- stabilizer
- urea
- formaldehyde resin
- resin adhesive
- Prior art date
- 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.)
- Pending
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Classifications
-
- 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
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/57—Polyureas; Polyurethanes
-
- 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
- D21H17/07—Nitrogen-containing compounds
-
- 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
- D21H17/65—Acid compounds
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a kind of Lauxite stabilizer and its application methods, stabilizer is prepared by organic base and Bronsted acid, and aqueous solution made of pH to 6.8~7.2, the salt of organic base are adjusted, mass concentration including unreacted organic base or Bronsted acid is 50%~60%.Its application method are as follows: after urea-formaldehyde resin adhesive prepares, the stabilizer is added, stirs evenly.Lauxite gum stabilizing agents configuration of the present invention is simple, 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.For reform and opening-up over 40 years, the timber industry and wood-based panel industry in China have obtained quick development,
The demand of wood-based plate is also increasing, also just obtained being widely applied applied to the urea-formaldehyde resin adhesive in wood-based panel industry and
It uses.
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 prepared by organic base and Bronsted acid, are adjusted pH and are formed to 6.8~7.2, by quality
Its composition of percentage is as follows:
Organic alkali salt, including unreacted organic base or Bronsted acid 50%~60%
Water 40%~50%
In above stabilizer composition, organic base and Bronsted acid are neutralized, and constitute multicomponent Conjugate Acid-Base Pairs, and ureaformaldehyde is added
After in resin glue, the pH balance that maintenance system is mutually restricted between acid-base pair extends so that urea-formaldehyde resin adhesive micelle be inhibited to condense
Urea-formaldehyde resin adhesive stablizes the time.
Above-mentioned Lauxite gum stabilizing agents prepare organic base used be dimethylamine, triethanolamine, pyridine, methenamine this
One of water-soluble alkali of sample or several mixtures.
It is one of formic acid, sulfuric acid, nitric acid or several that above-mentioned Lauxite gum stabilizing agents, which prepare Bronsted acid used,
Mixture.
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 8 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 urea-formaldehyde resin adhesive, 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#Urea-formaldehyde resin adhesive, or experiment 44 is added in 0.3% ratio in Lauxite gum stabilizing agents, with 9#Urea-formaldehyde resin adhesive is steady
Determine agent in 0.3% ratio be added urea-formaldehyde resin adhesive when, the stabilization time of urea-formaldehyde resin adhesive is significantly extended, than not adding
Add the urea-formaldehyde resin adhesive of stabilizer can more 8 day time.
Claims (5)
1. a kind of Lauxite gum stabilizing agents and its application method, it is characterised in that the stabilizer is matched by organic base and Bronsted acid
System adjusts aqueous solution made of pH to 6.8~7.2, the wherein salt of organic base, including unreacted organic base or Bronsted acid
Mass concentration is 50%~60%.
2. one kind Lauxite gum stabilizing agents according to claim 1 and its application method, it is characterised in that the stabilizer
Preparing organic base used is one of dimethylamine, triethanolamine, pyridine, water-soluble alkali as methenamine or several
Mixture.
3. one kind Lauxite gum stabilizing agents according to claim 1 and its application method, it is characterised in that the stabilizer
Preparing Bronsted acid used is one of formic acid, sulfuric acid, nitric 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
Application method is as follows: after urea-formaldehyde resin adhesive prepares, the stabilizer is added, stirs evenly.
5. 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 |
|---|---|---|---|
| CN201811373463.7A CN109577075A (en) | 2018-11-19 | 2018-11-19 | A kind of Lauxite gum stabilizing agents and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811373463.7A CN109577075A (en) | 2018-11-19 | 2018-11-19 | A kind of Lauxite gum stabilizing agents and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109577075A true CN109577075A (en) | 2019-04-05 |
Family
ID=65922997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811373463.7A Pending CN109577075A (en) | 2018-11-19 | 2018-11-19 | A kind of Lauxite gum stabilizing agents and its application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109577075A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3169076A (en) * | 1960-05-11 | 1965-02-09 | Miles Lab | Method of sizing paper with dialdehyde polysaccharide-urea resin and the product thereof |
| US20070012412A1 (en) * | 2005-07-15 | 2007-01-18 | Schweitzer-Mauduit International, Inc. | Laminate paper having increased pH stability and method of making same |
| CN101265314A (en) * | 2008-04-30 | 2008-09-17 | 北京化工大学 | Environmental protection urea-formaldehyde resin and preparation method thereof |
| CN101585926A (en) * | 2009-04-20 | 2009-11-25 | 永港伟方（北京）科技股份有限公司 | Urea-formaldehyde resin additive, preparing method and application thereof |
| 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 |
| CN104562837A (en) * | 2014-12-30 | 2015-04-29 | 滁州斯迈特复合材料有限公司 | Modified urea resin composite curing agent and preparation method thereof |
| US20180140529A1 (en) * | 2016-11-18 | 2018-05-24 | First Quality Tissue, Llc | Flushable wipe and method of forming the same |
-
2018
- 2018-11-19 CN CN201811373463.7A patent/CN109577075A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3169076A (en) * | 1960-05-11 | 1965-02-09 | Miles Lab | Method of sizing paper with dialdehyde polysaccharide-urea resin and the product thereof |
| US20070012412A1 (en) * | 2005-07-15 | 2007-01-18 | Schweitzer-Mauduit International, Inc. | Laminate paper having increased pH stability and method of making same |
| CN101265314A (en) * | 2008-04-30 | 2008-09-17 | 北京化工大学 | Environmental protection urea-formaldehyde resin and preparation method thereof |
| CN101585926A (en) * | 2009-04-20 | 2009-11-25 | 永港伟方（北京）科技股份有限公司 | Urea-formaldehyde resin additive, preparing method and application thereof |
| 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 |
| CN104562837A (en) * | 2014-12-30 | 2015-04-29 | 滁州斯迈特复合材料有限公司 | Modified urea resin composite curing agent and preparation method thereof |
| US20180140529A1 (en) * | 2016-11-18 | 2018-05-24 | First Quality Tissue, Llc | Flushable wipe and method of forming the same |
Non-Patent Citations (2)
| Title |
|---|
| 河北化工学院 编: "《农机具胶修技术》", 30 November 1977, 中国财财政经济出版社 * |
| 陈崇英 等: "复合固化剂不同用量对脲醛树脂固化时间及适用期的影响分析", 《木材加工机械》 * |
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Application publication date: 20190405 |