CN106978731A - A kind of environmentally friendly aramid fiber dipping solution and its preparation technology - Google Patents
A kind of environmentally friendly aramid fiber dipping solution and its preparation technology Download PDFInfo
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/693—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/207—Substituted carboxylic acids, e.g. by hydroxy or keto groups; Anhydrides, halides or salts thereof
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- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
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- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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Abstract
The invention discloses a kind of environmentally friendly aramid fiber dipping solution, each group is divided into：Modified latex, Epoxysuccinic acid, gallic acid, 4 pyridones, hexamethylene diisocyanate, ethyl cellulose M90, fine silica powder, disodium hydrogen phosphate, urea, allyl ether hydroxyl sulfoacid sodium, 3 aminopropanols, ethanol, distilled water.Invention additionally discloses the preparation technology of the environmentally friendly aramid fiber dipping solution.Dipping solution prepared by the present invention is carried out after dipping process to aramid fiber, its peel adhesion and H bonding forces are higher, bonding effect is good, there is good dipping effect to aramid fiber, in addition the dipping solution environmental protection, the application of traditional resorcinol formaldehyde latex type dipping solution can be substituted to a certain extent.
Description
Technical field
The invention belongs to dipping solution technical field, and in particular to a kind of environmentally friendly aramid fiber dipping solution and its preparation work
Skill.
Background technology
In rubber industry, the use of rubber is more and more extensive, and especially fiber-rubber composite turns into work
One of important materials in industry application.Due to the addition of fiber in fiber-rubber composite, the items of rubber are substantially improved
Can, expand the use scope of rubber.However, because the nature difference of fiber and elastomeric material is larger, in order to improve both knots
Close intensity, it will usually which the fiber added is pre-processed in dipping solution in advance.
At present, common dipping solution is Resorcin-Formaldehyde-Latex type binding system, although the dipping solution is considered as
One of most economical effective binding system is bonded for rubber and fiber, but the isophthalic two used in this binding system
Intermediate product produced by the raw materials such as phenol, formaldehyde and preparation process can more or less have certain toxicity, bring certain
Environmental pollution, while also contributing to the health of human body.With the enhancing of people's environmental consciousness, for environmental protection and bonding effect is good
Resorcin-Formaldehyde-Latex type dipping solution substitute demand it is also more and more vigorous.
The content of the invention
Therefore, the present invention provides a kind of environmentally friendly aramid fiber dipping solution and its preparation technology, solve in the prior art extremely
A kind of few technical problem.
Therefore, the present invention provides a kind of environmentally friendly aramid fiber dipping solution, each component is calculated by weight as：Modified latex
15-28 parts, 4-9 parts of Epoxysuccinic acid, 2-5 parts of gallic acid, 1.8-3.5 parts of 4- pyridones, hexamethylene diisocyanate
0.7-2.4 parts, 0.6-1.5 parts of ethyl cellulose M90,1.5-3.2 parts of fine silica powder, 0.6-1.8 parts of disodium hydrogen phosphate,
0.5-2.4 parts of urea, 1.2-3.5 parts of allyl ether hydroxyl sulfoacid sodium, 4-9 parts of 3- aminopropanols, 20-32 parts of ethanol, distilled water
35-50 parts；
The modified latex is at least two in the latex of vinegar third, carboxyl butadiene-vinylpyridine copylymer latex, carboxylic styrene butadiene latex and carboxylic acrylonitrile butadiene rubber latex
Kind.
According to an embodiment of the invention, wherein, the modified latex is the latex of vinegar third, carboxyl butadiene-vinylpyridine copylymer latex and carboxylic
The mixture of base NBR latex.
According to an embodiment of the invention, wherein, the modified latex is that weight ratio is 4:1:2 latex of vinegar third,
The mixture of butadiene-vinylpyridine copylymer latex and carboxylic acrylonitrile butadiene rubber latex.
According to an embodiment of the invention, wherein, the average grain diameter of the fine silica powder is 1-10 microns.
According to an embodiment of the invention, wherein, each component is calculated by weight as：17-24.5 parts of modified latex,
4.6-8.3 parts of Epoxysuccinic acid, 2.5-4.7 parts of gallic acid, 2.1-3.3 parts of 4- pyridones, hexamethylene diisocyanate
0.9-2.1 parts, 0.8-1.4 parts of ethyl cellulose M90,1.8-3 parts of fine silica powder, 0.8-1.5 parts of disodium hydrogen phosphate, urine
Plain 0.7-2.1 parts, 1.4-3.1 parts of allyl ether hydroxyl sulfoacid sodium, 4.3-8.6 parts of 3- aminopropanols, 22-30 parts of ethanol, distillation
38-46 parts of water.
Therefore, the present invention provides the preparation technology of environmentally friendly aramid fiber dipping solution, comprise the following steps：
1）Epoxysuccinic acid and gallic acid are added in ethanol, stirring to dissolving；
2）Then 4- pyridones, hexamethylene diisocyanate, allyl ether hydroxyl sulfoacid sodium and 3- aminopropans are sequentially added
Alcohol, is stirred 1-5 hours at 50-80 DEG C；
3）Disodium hydrogen phosphate and urea are added in distilled water, stirring is then slowly added into step 2 to dissolving）In, stir 20-
40 minutes, obtain mixed liquor；
4）Modified latex, fine silica powder and ethyl cellulose M90 are sequentially added into step 3）In obtained mixed liquor,
Stirred 2-10 hours at 35-55 DEG C, be cooled to room temperature, produce environmentally friendly aramid fiber dipping solution.
According to an embodiment of the invention, wherein, the step 2）In at 55-70 DEG C stir 1-3 hours.
According to an embodiment of the invention, wherein, the step 4）In at 35-45 DEG C stir 3-6 hours.
Beneficial effects of the present invention are：
Dipping solution prepared by the present invention is carried out after dipping process to aramid fiber, and its peel adhesion reaches 353-382N/25mm, H
Bonding force reaches 156-173N/10mm, and bonding effect is good, peels off coverage rate and reaches 4-5 grades, has good dipping effect to aramid fiber
Really, the dipping solution environmental protection in addition, answering for traditional Resorcin-Formaldehyde-Latex type dipping solution can be substituted to a certain extent
With.
Embodiment
With reference to embodiment, the present invention is described in further detail.Following examples are used to illustrate the present invention, but not
For limiting the scope of the present invention.
Embodiment 1
A kind of environmentally friendly aramid fiber dipping solution, each component is calculated by weight as：15 parts of modified latex, 4 parts of Epoxysuccinic acid,
2 parts of gallic acid, 1.8 parts of 4- pyridones, 0.7 part of hexamethylene diisocyanate, 0.6 part of ethyl cellulose M90, dioxy
1.5 parts of SiClx micro mist, 0.6 part of disodium hydrogen phosphate, 0.5 part of urea, 1.2 parts of allyl ether hydroxyl sulfoacid sodium, 3- aminopropanols 4
Part, 20 parts of ethanol, 35 parts of distilled water；
The modified latex is that weight ratio is 1:3 carboxylic styrene butadiene latex and the mixture of carboxylic acrylonitrile butadiene rubber latex.
The average grain diameter of the fine silica powder is 1-10 microns.
The preparation technology of the environmentally friendly aramid fiber dipping solution, comprises the following steps：
1）Epoxysuccinic acid and gallic acid are added in ethanol, stirring to dissolving；
2）Then 4- pyridones, hexamethylene diisocyanate, allyl ether hydroxyl sulfoacid sodium and 3- aminopropans are sequentially added
Alcohol, is stirred 1 hour at 50 DEG C；
3）Disodium hydrogen phosphate and urea are added in distilled water, stirring is then slowly added into step 2 to dissolving）In, stir 20 points
Clock, obtains mixed liquor；
4）Modified latex, fine silica powder and ethyl cellulose M90 are sequentially added into step 3）In obtained mixed liquor, 35
Stirred 2 hours at DEG C, be cooled to room temperature, produce environmentally friendly aramid fiber dipping solution.
Embodiment 2
A kind of environmentally friendly aramid fiber dipping solution, each component is calculated by weight as：28 parts of modified latex, 9 parts of Epoxysuccinic acid,
5 parts of gallic acid, 3.5 parts of 4- pyridones, 2.4 parts of hexamethylene diisocyanate, 1.5 parts of ethyl cellulose M90, dioxy
3.2 parts of SiClx micro mist, 1.8 parts of disodium hydrogen phosphate, 2.4 parts of urea, 3.5 parts of allyl ether hydroxyl sulfoacid sodium, 3- aminopropanols 9
Part, 32 parts of ethanol, 50 parts of distilled water；
The modified latex is that weight ratio is 5:2:In 1 carboxyl butadiene-vinylpyridine copylymer latex, carboxylic styrene butadiene latex and carboxylic acrylonitrile butadiene rubber latex
Mixture.
The average grain diameter of the fine silica powder is 1-10 microns.
The preparation technology of the environmentally friendly aramid fiber dipping solution, comprises the following steps：
1）Epoxysuccinic acid and gallic acid are added in ethanol, stirring to dissolving；
2）Then 4- pyridones, hexamethylene diisocyanate, allyl ether hydroxyl sulfoacid sodium and 3- aminopropans are sequentially added
Alcohol, is stirred 5 hours at 80 DEG C；
3）Disodium hydrogen phosphate and urea are added in distilled water, stirring is then slowly added into step 2 to dissolving）In, stir 40 points
Clock, obtains mixed liquor；
4）Modified latex, fine silica powder and ethyl cellulose M90 are sequentially added into step 3）In obtained mixed liquor, 55
Stirred 10 hours at DEG C, be cooled to room temperature, produce environmentally friendly aramid fiber dipping solution.
Embodiment 3
A kind of environmentally friendly aramid fiber dipping solution, each component is calculated by weight as：17 parts of modified latex, Epoxysuccinic acid 4.6
Part, 2.5 parts of gallic acid, 2.1 parts of 4- pyridones, 0.9 part of hexamethylene diisocyanate, 0.8 part of ethyl cellulose M90,
1.8 parts of fine silica powder, 0.8 part of disodium hydrogen phosphate, 0.7 part of urea, 1.4 parts of allyl ether hydroxyl sulfoacid sodium, 3- aminopropans
4.3 parts of alcohol, 22 parts of ethanol, 38 parts of distilled water；
The modified latex is that weight ratio is 2:1 latex of vinegar third and the mixture of carboxylic styrene butadiene latex.
The average grain diameter of the fine silica powder is 1-10 microns.
The preparation technology of the environmentally friendly aramid fiber dipping solution, comprises the following steps：
1）Epoxysuccinic acid and gallic acid are added in ethanol, stirring to dissolving；
2）Then 4- pyridones, hexamethylene diisocyanate, allyl ether hydroxyl sulfoacid sodium and 3- aminopropans are sequentially added
Alcohol, is stirred 1 hour at 55 DEG C；
3）Disodium hydrogen phosphate and urea are added in distilled water, stirring is then slowly added into step 2 to dissolving）In, stir 30 points
Clock, obtains mixed liquor；
4）Modified latex, fine silica powder and ethyl cellulose M90 are sequentially added into step 3）In obtained mixed liquor,
When stirring 3 at 35-45 DEG C, room temperature is cooled to, environmentally friendly aramid fiber dipping solution is produced.
Embodiment 4
A kind of environmentally friendly aramid fiber dipping solution, each component is calculated by weight as：24.5 parts of modified latex, Epoxysuccinic acid
8.3 parts, 4.7 parts of gallic acid, 3.3 parts of 4- pyridones, 2.1 parts of hexamethylene diisocyanate, ethyl cellulose M90 1.4
Part, 3 parts of fine silica powder, 1.5 parts of disodium hydrogen phosphate, 2.1 parts of urea, 3.1 parts of allyl ether hydroxyl sulfoacid sodium, 3- aminopropans
8.6 parts of alcohol, 30 parts of ethanol, 46 parts of distilled water；
The modified latex is that weight ratio is 4:1:2 latex of vinegar third, carboxyl butadiene-vinylpyridine copylymer latex, carboxylic styrene butadiene latex and carboxyl butyronitrile
At least two in latex.
The average grain diameter of the fine silica powder is 1-10 microns.
The preparation technology of the environmentally friendly aramid fiber dipping solution, comprises the following steps：
1）Epoxysuccinic acid and gallic acid are added in ethanol, stirring to dissolving；
2）Then 4- pyridones, hexamethylene diisocyanate, allyl ether hydroxyl sulfoacid sodium and 3- aminopropans are sequentially added
Alcohol, is stirred 3 hours at 70 DEG C；
3）Disodium hydrogen phosphate and urea are added in distilled water, stirring is then slowly added into step 2 to dissolving）In, stir 20-
40 minutes, obtain mixed liquor；
4）Modified latex, fine silica powder and ethyl cellulose M90 are sequentially added into step 3）In obtained mixed liquor, 45
Stirred 6 hours at DEG C, be cooled to room temperature, produce environmentally friendly aramid fiber dipping solution.
Embodiment 5
A kind of environmentally friendly aramid fiber dipping solution, each component is calculated by weight as：21 parts of modified latex, Epoxysuccinic acid 7.3
Part, 3.6 parts of gallic acid, 2.8 parts of 4- pyridones, 1.4 parts of hexamethylene diisocyanate, 1.3 parts of ethyl cellulose M90,
2.6 parts of fine silica powder, 1.2 parts of disodium hydrogen phosphate, 1.8 parts of urea, 2.6 parts of allyl ether hydroxyl sulfoacid sodium, 3- aminopropans
6.7 parts of alcohol, 26 parts of ethanol, 42 parts of distilled water；
The modified latex is that the latex of vinegar third, the modified latex are that weight ratio is 4:1:2 latex of vinegar third, butadiene-vinylpyridine copylymer latex and carboxylic
The mixture of base NBR latex.
The average grain diameter of the fine silica powder is 1-10 microns.
The preparation technology of the environmentally friendly aramid fiber dipping solution, comprises the following steps：
1）Epoxysuccinic acid and gallic acid are added in ethanol, stirring to dissolving；
2）Then 4- pyridones, hexamethylene diisocyanate, allyl ether hydroxyl sulfoacid sodium and 3- aminopropans are sequentially added
Alcohol, is stirred 3 hours at 68 DEG C；
3）Disodium hydrogen phosphate and urea are added in distilled water, stirring is then slowly added into step 2 to dissolving）In, stir 28 points
Clock, obtains mixed liquor；
4）Modified latex, fine silica powder and ethyl cellulose M90 are sequentially added into step 3）In obtained mixed liquor, 40
Lower stirring 5 hours, is cooled to room temperature, produces environmentally friendly aramid fiber dipping solution.
Comparative example 1
A kind of environmentally friendly aramid fiber dipping solution, each component is calculated by weight as：15 parts of modified latex, 4 parts of Epoxysuccinic acid,
2 parts of gallic acid, 1.8 parts of 4- pyridones, 0.6 part of ethyl cellulose M90,0.6 part of disodium hydrogen phosphate, 0.5 part of urea, alkene
1.2 parts of propyl ether hydroxyl sulfoacid sodium, 4 parts of 3- aminopropanols, 20 parts of ethanol, 35 parts of distilled water；
The modified latex is that weight ratio is 1:3 carboxylic styrene butadiene latex and the mixture of carboxylic acrylonitrile butadiene rubber latex.
The preparation technology of the environmentally friendly aramid fiber dipping solution, comprises the following steps：
1）Epoxysuccinic acid and gallic acid are added in ethanol, stirring to dissolving；
2）Then 4- pyridones, allyl ether hydroxyl sulfoacid sodium and 3- aminopropanols are sequentially added, 1 is stirred at 50 DEG C small
When；
3）Disodium hydrogen phosphate and urea are added in distilled water, stirring is then slowly added into step 2 to dissolving）In, stir 20 points
Clock, obtains mixed liquor；
4）Modified latex and ethyl cellulose M90 are sequentially added into step 3）In obtained mixed liquor, 2 are stirred at 35 DEG C small
When, room temperature is cooled to, environmentally friendly aramid fiber dipping solution is produced.
Comparative example 2
A kind of environmentally friendly aramid fiber dipping solution, each component is calculated by weight as：15 parts of modified latex, 2 parts of gallic acid, 4-
1.8 parts of pyridone, 0.7 part of hexamethylene diisocyanate, 0.6 part of ethyl cellulose M90,1.5 parts of fine silica powder,
0.6 part of disodium hydrogen phosphate, 0.5 part of urea, 4 parts of 3- aminopropanols, 20 parts of ethanol, 35 parts of distilled water；
The modified latex is that weight ratio is 1:3 carboxylic styrene butadiene latex and the mixture of carboxylic acrylonitrile butadiene rubber latex.
The average grain diameter of the fine silica powder is 1-10 microns.
The preparation technology of the environmentally friendly aramid fiber dipping solution, comprises the following steps：
1）Gallic acid is added in ethanol, stirring to dissolving；
2）Then 4- pyridones, hexamethylene diisocyanate and 3- aminopropanols are sequentially added, 1 is stirred at 50 DEG C small
When；
3）Disodium hydrogen phosphate and urea are added in distilled water, stirring is then slowly added into step 2 to dissolving）In, stir 20 points
Clock, obtains mixed liquor；
4）Modified latex, fine silica powder and ethyl cellulose M90 are sequentially added into step 3）In obtained mixed liquor, 35
Stirred 2 hours at DEG C, be cooled to room temperature, produce environmentally friendly aramid fiber dipping solution.
Performance test
Aramid fiber is impregnated into after the above-mentioned dipping solution prepared, after drying and be made sample carry out correlated performance test,
Its test result is as shown in the table：
| Peel adhesion/N/25mm | H bonding forces/N/10mm | Peel off rubber coating rate | |
| Embodiment 1 | 353 | 156 | 4 grades |
| Embodiment 2 | 365 | 161 | 4 grades |
| Embodiment 3 | 371 | 159 | 5 grades |
| Embodiment 4 | 376 | 166 | 4 grades |
| Embodiment 5 | 382 | 173 | 5 grades |
| Comparative example 1 | 315 | 136 | 3 grades |
| Comparative example 2 | 338 | 128 | 3 grades |
The dipping solution of the invention prepared is can be seen that by above test result to carry out after dipping process aramid fiber, it is shelled
353-382N/25mm is reached from bonding force, H bonding forces reach 156-173N/10mm, and bonding effect is good, peels off coverage rate and reach 4-5 grades,
There is good dipping effect to aramid fiber, the dipping solution environmental protection, traditional isophthalic can be substituted to a certain extent in addition
The application of diphenol-formaldehyde-latex type dipping solution.
Claims (8)
1. a kind of environmentally friendly aramid fiber dipping solution, it is characterised in that each component is calculated by weight as：Modified latex 15-28
Part, 4-9 parts of Epoxysuccinic acid, 2-5 parts of gallic acid, 1.8-3.5 parts of 4- pyridones, hexamethylene diisocyanate 0.7-
2.4 parts, 0.6-1.5 parts of ethyl cellulose M90,1.5-3.2 parts of fine silica powder, 0.6-1.8 parts of disodium hydrogen phosphate, urea
0.5-2.4 parts, 1.2-3.5 parts of allyl ether hydroxyl sulfoacid sodium, 4-9 parts of 3- aminopropanols, 20-32 parts of ethanol, distilled water 35-50
Part；
The modified latex is at least two in the latex of vinegar third, carboxyl butadiene-vinylpyridine copylymer latex, carboxylic styrene butadiene latex and carboxylic acrylonitrile butadiene rubber latex
Kind.
2. environmentally friendly aramid fiber dipping solution according to claim 1, it is characterised in that the modified latex is the glue of vinegar third
The mixture of breast, carboxyl butadiene-vinylpyridine copylymer latex and carboxylic acrylonitrile butadiene rubber latex.
3. environmentally friendly aramid fiber dipping solution according to claim 1, it is characterised in that the modified latex is weight ratio
For 4:1:The mixture of 2 latex of vinegar third, butadiene-vinylpyridine copylymer latex and carboxylic acrylonitrile butadiene rubber latex.
4. environmentally friendly aramid fiber dipping solution according to claim 1, it is characterised in that the fine silica powder it is flat
Equal particle diameter is 1-10 microns.
5. environmentally friendly aramid fiber dipping solution according to claim 1, it is characterised in that each component is counted by weight
For：17-24.5 parts of modified latex, 4.6-8.3 parts of Epoxysuccinic acid, 2.5-4.7 parts of gallic acid, 4- pyridones 2.1-3.3
Part, 0.9-2.1 parts of hexamethylene diisocyanate, 0.8-1.4 parts of ethyl cellulose M90,1.8-3 parts of fine silica powder, phosphorus
Sour disodium hydrogen 0.8-1.5 parts, 0.7-2.1 parts of urea, 1.4-3.1 parts of allyl ether hydroxyl sulfoacid sodium, 3- aminopropanols 4.3-8.6
Part, 22-30 parts of ethanol, 38-46 parts of distilled water.
6. according to the preparation technology of any described environmentally friendly aramid fiber dipping solutions of claim 1-5, it is characterised in that including
Following steps：
1）Epoxysuccinic acid and gallic acid are added in ethanol, stirring to dissolving；
2）Then 4- pyridones, hexamethylene diisocyanate, allyl ether hydroxyl sulfoacid sodium and 3- aminopropans are sequentially added
Alcohol, is stirred 1-5 hours at 50-80 DEG C；
3）Disodium hydrogen phosphate and urea are added in distilled water, stirring is then slowly added into step 2 to dissolving）In, stir 20-
40 minutes, obtain mixed liquor；
4）Modified latex, fine silica powder and ethyl cellulose M90 are sequentially added into step 3）In obtained mixed liquor,
Stirred 2-10 hours at 35-55 DEG C, be cooled to room temperature, produce environmentally friendly aramid fiber dipping solution.
7. the preparation technology of environmentally friendly aramid fiber dipping solution according to claim 6, it is characterised in that the step 2）
In at 55-70 DEG C stir 1-3 hours.
8. the preparation technology of environmentally friendly aramid fiber dipping solution according to claim 6, it is characterised in that the step 4）
In at 35-45 DEG C stir 3-6 hours.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107675518A (en) * | 2017-11-08 | 2018-02-09 | 苏州甫众塑胶有限公司 | Conveyer belt framework material and preparation method thereof |
| CN107841880A (en) * | 2017-11-08 | 2018-03-27 | 苏州甫众塑胶有限公司 | A kind of environmentally friendly aramid fiber dipping solution and its preparation technology |
| CN108018713A (en) * | 2017-12-14 | 2018-05-11 | 烟台燕晟信息技术有限公司 | A kind of aramid fiber surface treatment fluid and its preparation and application |
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Application publication date: 20170725 |