CN117166248A - Water-dispersible fiber and preparation method thereof - Google Patents
Water-dispersible fiber and preparation method thereof Download PDFInfo
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- CN117166248A CN117166248A CN202310840686.4A CN202310840686A CN117166248A CN 117166248 A CN117166248 A CN 117166248A CN 202310840686 A CN202310840686 A CN 202310840686A CN 117166248 A CN117166248 A CN 117166248A
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- Prior art keywords
- water
- dispersible
- fiber
- modifier
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- 239000000835 fiber Substances 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title abstract description 19
- 239000003607 modifier Substances 0.000 claims abstract description 35
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000006185 dispersion Substances 0.000 claims abstract description 21
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 16
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 16
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 16
- 238000004513 sizing Methods 0.000 claims abstract description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000004094 surface-active agent Substances 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 239000011248 coating agent Substances 0.000 claims description 23
- 238000000576 coating method Methods 0.000 claims description 23
- 238000003756 stirring Methods 0.000 claims description 15
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 14
- -1 propylene sulfonic acid Chemical compound 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 7
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
- 238000007605 air drying Methods 0.000 claims description 2
- 239000000839 emulsion Substances 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 238000000643 oven drying Methods 0.000 claims description 2
- 230000001376 precipitating effect Effects 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 description 10
- 239000004567 concrete Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011210 fiber-reinforced concrete Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- RAJUSMULYYBNSJ-UHFFFAOYSA-N prop-1-ene-1-sulfonic acid Chemical compound CC=CS(O)(=O)=O RAJUSMULYYBNSJ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a water-dispersible fiber and a preparation method thereof, wherein the water-dispersible fiber is prepared by sizing; the sizing agent comprises the following raw materials in parts by weight: 15-25 parts of water dispersion modifier, 40-50 parts of dichloromethane, 10-15 parts of absolute ethyl alcohol and 4-8 parts of surfactant; the water-dispersible modifier is prepared by modifying sodium carboxymethyl cellulose. The invention provides a novel water dispersion modifier for fibers and a preparation method thereof; the water-dispersible fiber prepared by the water-dispersible modifier has excellent water-dispersible property, and is free from caking and adhesion phenomenon after being added into water for 30 min.
Description
Technical Field
The invention belongs to the technical field of water-dispersible fibers, and particularly relates to a water-dispersible fiber and a preparation method thereof.
Background
Concrete is the most widely used building material with the greatest dosage at present, but the application range is limited by the weaknesses of low tensile strength, easy cracking, large brittleness, poor deformation performance, unfavorable earthquake resistance, great self weight and the like, and the engineering quality is influenced. Fiber reinforcement is an important way for modifying concrete, and the incorporation of fiber materials can greatly improve the tensile strength, crack resistance, fatigue resistance, fracture toughness and deformation performance of concrete.
Although fiber reinforced concrete has been widely used in the field of engineering construction, such as road, bridge, building retaining wall, dam reinforcement, etc., it is a difficult problem to achieve uniform dispersion of fibers in concrete because most of the fibers are nonpolar molecules and water is polar, so that it is difficult to uniformly disperse the fibers in water. The uneven dispersion of the fibers in the concrete not only can influence the strength and toughness of the concrete, so that the mechanical strength of different parts of the concrete is uneven, the overall mechanical property of the concrete is reduced, but also the phenomena of cracking, peeling, collapse and the like of the concrete are easy to occur in parts of the concrete after a period of time, thereby leaving a certain potential safety hazard.
Disclosure of Invention
The present invention is directed to providing a water-dispersible fiber and a method for preparing the same, which solve the above-mentioned problems.
In order to achieve the above object, the present invention is realized by the following technical scheme:
a water-dispersible fiber made by a sizing treatment; the sizing agent comprises the following raw materials in parts by weight:
15-25 parts of water dispersion modifier, 40-50 parts of dichloromethane, 10-15 parts of absolute ethyl alcohol and 4-8 parts of surfactant;
the water-dispersible modifier has a structural formula shown in a formula (I):
the water-dispersible modifier is prepared by the following method:
s1: preparing 5-8wt% of sodium carboxymethyl cellulose water solution;
s2: ammonium persulfate and propylene sulfonic acid are added, and the mixture is reacted for 3 to 5 hours at the temperature of between 70 and 80 ℃ in a nitrogen atmosphere;
s3: adding acetone into S2, precipitating and separating the product to obtain the compound shown in the formula (I).
The reaction equation for the compound of formula (I) is as follows:
the addition amount of the ammonium persulfate is 0.05-0.08 times of the molar amount of sodium carboxymethyl cellulose; the addition amount of the propylene sulfonic acid is 4-5 times of the mass of the sodium carboxymethyl cellulose.
The surfactant is one of sodium dodecyl benzene sulfonate, sodium dodecyl sulfonate and polyether modified siloxane.
The fiber is polypropylene fiber or polyester fiber.
The sizing liquid is prepared by the following method:
sequentially adding dichloromethane, absolute ethyl alcohol, a surfactant and a water-dispersible modifier into a stirring kettle, and stirring and mixing for 20-30 minutes at normal temperature to obtain the aqueous emulsion.
A method of making a water-dispersible fiber comprising the steps of:
soaking the fiber in the slurry, stirring for 5-20min, filtering, taking out, air drying or oven drying to obtain water-dispersible fiber.
A method of making a water-dispersible fiber comprising the steps of:
coating the surface of the fiber with slurry with a coating machine, wherein the coating weight is 20-35g/kg, and drying at 60 ℃ after coating; repeatedly coating and drying for 2-3 times to obtain the water-dispersible fiber.
The invention has the beneficial effects that:
(1) The invention provides a novel water dispersion modifier for fibers and a preparation method thereof;
(2) The water-dispersible fiber prepared by the water-dispersible modifier has excellent water-dispersible property, and is free from caking and adhesion phenomenon after being added into water for 30 min.
Detailed Description
The present invention will be further described with reference to examples, but the present invention is not limited to these examples.
Example 1
Preparation of the water-dispersing modifier:
210.53g of sodium carboxymethyl cellulose is added into 4000g of water to prepare 5wt% sodium carboxymethyl cellulose water solution; then 9.92g of ammonium persulfate and 842.11g of propylene sulfonic acid are added and stirred and mixed uniformly; under nitrogen atmosphere, the reaction is carried out for 5 hours at 70 ℃, 2000g of acetone is added, and the separated product is precipitated to obtain the water-dispersible modifier A, and the average molecular weight is about 7425.
Example 2
Preparation of the water-dispersing modifier:
255.32g of sodium carboxymethyl cellulose is added into 4000g of water to prepare an aqueous solution of 6wt% sodium carboxymethyl cellulose; then 16.85g of ammonium persulfate and 1148.94g of propylene sulfonic acid are added and stirred and mixed uniformly; the reaction was carried out for 4 hours at 75℃under nitrogen atmosphere, then 2000g of acetone was added, and the product was separated by precipitation to give water-dispersible modifier B having an average molecular weight of about 7954.
Example 3
Preparation of the water-dispersing modifier:
347.83g of sodium carboxymethyl cellulose is added into 4000g of water to prepare 8wt% sodium carboxymethyl cellulose water solution; then 26.22g of ammonium persulfate and 1739.13g of propylene sulfonic acid are added and stirred and mixed uniformly; the reaction was carried out at 80℃for 3 hours under nitrogen atmosphere, then 2000g of acetone was added, and the product was separated by precipitation to give a water-dispersible modifier C having an average molecular weight of about 8867.
Example 4
Preparing sizing liquid:
adding 4kg of dichloromethane, 1kg of absolute ethyl alcohol, 0.4kg of sodium dodecyl benzene sulfonate and 1.5kg of water dispersion modifier A into a stirring kettle in sequence, stirring and mixing at normal temperature (25 ℃) for 20 minutes to obtain the aqueous dispersion modifier.
Example 5
Preparing sizing liquid:
adding 4.5kg of dichloromethane, 1.2kg of absolute ethyl alcohol, 0.6kg of sodium dodecyl sulfate and 2kg of water-dispersible modifier B into a stirring kettle in sequence, and stirring and mixing at normal temperature (25 ℃) for 25 minutes to obtain the aqueous dispersion type aqueous dispersion modifier.
Example 6
Preparing sizing liquid:
5kg of dichloromethane, 1.5kg of absolute ethyl alcohol, 0.8kg of polyether modified siloxane and 2.5kg of water-dispersible modifier C are sequentially added into a stirring kettle, and stirred and mixed for 30 minutes at normal temperature (25 ℃), thus obtaining the modified silicone.
The polypropylene fibers and polyester fibers used in examples 7 to 10 and comparative examples 1 to 6 had an average length of 8mm and an average diameter of 15. Mu.m.
Example 7
Preparation of water-dispersible fibers:
coating the surface of the polypropylene fiber with slurry (prepared in example 4) by using a coating machine, wherein the coating amount is 20g/kg, and drying at 60 ℃ after coating; repeatedly coating and drying for 2 times to obtain the water-dispersible fiber.
Example 8
Preparation of water-dispersible fibers:
coating the surface of the polypropylene fiber with slurry (prepared in example 5) by using a coater, wherein the coating amount is 30g/kg, and drying at 60 ℃ after coating; repeatedly coating and drying for 3 times to obtain the water-dispersible fiber.
Example 9
Preparation of water-dispersible fibers:
coating the surface of the polyester fiber with slurry (prepared in example 6) by using a coater, wherein the coating amount is 35g/kg, and drying at 60 ℃ after coating; repeatedly coating and drying for 3 times to obtain the water-dispersible fiber.
Example 10
Preparation of water-dispersible fibers:
the polypropylene fiber is soaked in the upper slurry (prepared in the example 5), stirred for 10min, filtered and taken out, and dried at 60 ℃ to obtain the water-dispersible fiber.
Comparative example 1
The preparation method of the water-dispersible fiber was substantially the same as that of example 8, except that the sizing solution used was prepared by the following method:
sequentially adding 4.5kg of dichloromethane, 1.2kg of absolute ethyl alcohol, 0.6kg of sodium dodecyl sulfate and 2kg of water-dispersible modifier into a stirring kettle, and stirring and mixing at 25 ℃ for 25 minutes to obtain the aqueous dispersion;
the water dispersion modifier in this comparative example was prepared by the following method:
255.32g of sodium carboxymethyl cellulose is added into 4000g of water to prepare an aqueous solution of 6wt% sodium carboxymethyl cellulose; 1148.94g of propenesulfonic acid was then added thereto and stirred and mixed uniformly. Obtaining the water-dispersible modifier.
Comparative example 2
The preparation method of the water-dispersible fiber was substantially the same as that of example 8, except that the sizing solution used was prepared by the following method:
sequentially adding 4.5kg of dichloromethane, 1.2kg of absolute ethyl alcohol, 0.6kg of sodium dodecyl sulfate and 2kg of water-dispersible modifier into a stirring kettle, and stirring and mixing at 25 ℃ for 25 minutes to obtain the aqueous dispersion;
the water dispersion modifier in this comparative example was prepared by the following method:
255.32g of sodium carboxymethyl cellulose is added into 4000g of water, and the mixture is stirred and uniformly mixed to obtain the water dispersion modifier.
Comparative example 3
The preparation method of the water-dispersible fiber was substantially the same as that of example 8, except that the aqueous dispersion modifier of the prepared upper slurry had an average molecular weight of about 6143.
Comparative example 4
The preparation method of the water-dispersible fiber was substantially the same as that of example 8, except that the aqueous dispersion modifier of the prepared upper slurry had an average molecular weight of about 9527.
Comparative example 5
The preparation method of the water-dispersible fiber is substantially the same as that of example 8, except that the water-dispersible modifier for preparing the upper slurry is replaced with an equal weight of a compound represented by the formula (II):
comparative example 6
The preparation method of the water-dispersible fiber is substantially the same as that of example 8, except that the water-dispersible modifier for preparing the upper slurry is replaced with an equal weight of a compound represented by the formula (III):
water dispersibility test:
4g of the fibers prepared in examples 7 to 10 and comparative examples 1 to 6 were weighed respectively, put into a beaker containing 1L of water at 25℃for 20 seconds, and then left to stand for 30 seconds to observe the dispersion of the fibers, and then left to stand for 30 minutes to observe the dispersion of the fibers. Table 1 shows the observed fiber dispersion.
TABLE 1
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention; however, those skilled in the art can make various changes, modifications and variations equivalent to the above-described embodiments without departing from the scope of the technical solution of the present invention; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present invention still fall within the scope of the present invention.
Claims (8)
1. A water-dispersible fiber characterized in that the water-dispersible fiber is prepared by a sizing treatment;
the sizing agent comprises the following raw materials in parts by weight: 15-25 parts of water dispersion modifier, 40-50 parts of dichloromethane, 10-15 parts of absolute ethyl alcohol and 4-8 parts of surfactant;
the water-dispersible modifier has a structural formula shown in a formula (I):
2. a water-dispersible fiber according to claim 1, characterized in that the water-dispersible modifier of formula (I) is prepared by:
s1: preparing 5-8wt% of sodium carboxymethyl cellulose water solution;
s2: ammonium persulfate and propylene sulfonic acid are added, and the mixture is reacted for 3 to 5 hours at the temperature of between 70 and 80 ℃ in a nitrogen atmosphere;
s3: adding acetone into S2, precipitating and separating the product to obtain the compound shown in the formula (I).
3. The water-dispersible fiber of claim 2, wherein the ammonium persulfate is added in an amount of 0.05 to 0.08 times the molar amount of sodium carboxymethyl cellulose; the addition amount of the propylene sulfonic acid is 4-5 times of the mass of the sodium carboxymethyl cellulose.
4. The water-dispersible fiber of claim 1, wherein the surfactant is one of sodium dodecylbenzene sulfonate, sodium dodecylsulfonate, polyether modified siloxane.
5. A water-dispersible fiber according to claim 1, wherein the fiber is polypropylene or polyester.
6. A water-dispersible fiber according to claim 1, wherein the sizing is prepared by:
sequentially adding dichloromethane, absolute ethyl alcohol, a surfactant and a water-dispersible modifier into a stirring kettle, and stirring and mixing for 20-30 minutes at normal temperature to obtain the aqueous emulsion.
7. A method of making a water-dispersible fiber comprising the steps of:
soaking the fiber in the slurry, stirring for 5-20min, filtering, taking out, air drying or oven drying to obtain water-dispersible fiber.
8. A method of making a water-dispersible fiber comprising the steps of: coating the surface of the fiber with slurry with a coating machine, wherein the coating weight is 20-35g/kg, and drying at 60 ℃ after coating; repeatedly coating and drying for 2-3 times to obtain the water-dispersible fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310840686.4A CN117166248B (en) | 2023-07-11 | 2023-07-11 | Water-dispersible fiber and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310840686.4A CN117166248B (en) | 2023-07-11 | 2023-07-11 | Water-dispersible fiber and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117166248A true CN117166248A (en) | 2023-12-05 |
| CN117166248B CN117166248B (en) | 2024-04-16 |
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| CN202310840686.4A Active CN117166248B (en) | 2023-07-11 | 2023-07-11 | Water-dispersible fiber and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07189132A (en) * | 1993-12-24 | 1995-07-25 | Matsumoto Yushi Seiyaku Co Ltd | Hydrophilicity improver for fiber, nonwoven fabric using the same and production of the nonwoven fabric |
| JPH08246350A (en) * | 1995-03-09 | 1996-09-24 | Lion Corp | Manual spray type fiber finishing agent composition |
| JP2006214032A (en) * | 2005-02-03 | 2006-08-17 | Kao Corp | Treating agent composition for textile product |
| JP2016138349A (en) * | 2015-01-28 | 2016-08-04 | 株式会社リブドゥコーポレーション | Fumaric acid-containing fiber, fumaric acid-containing fiber assembly and absorber |
| US20230048808A1 (en) * | 2019-12-27 | 2023-02-16 | Shin-Etsu Chemical Co., Ltd. | Fiber treatment agent comprising an aqueous dispersion of an aqueous silicone elastomer and a coating |
-
2023
- 2023-07-11 CN CN202310840686.4A patent/CN117166248B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07189132A (en) * | 1993-12-24 | 1995-07-25 | Matsumoto Yushi Seiyaku Co Ltd | Hydrophilicity improver for fiber, nonwoven fabric using the same and production of the nonwoven fabric |
| JPH08246350A (en) * | 1995-03-09 | 1996-09-24 | Lion Corp | Manual spray type fiber finishing agent composition |
| JP2006214032A (en) * | 2005-02-03 | 2006-08-17 | Kao Corp | Treating agent composition for textile product |
| JP2016138349A (en) * | 2015-01-28 | 2016-08-04 | 株式会社リブドゥコーポレーション | Fumaric acid-containing fiber, fumaric acid-containing fiber assembly and absorber |
| US20230048808A1 (en) * | 2019-12-27 | 2023-02-16 | Shin-Etsu Chemical Co., Ltd. | Fiber treatment agent comprising an aqueous dispersion of an aqueous silicone elastomer and a coating |
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| Publication number | Publication date |
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| CN117166248B (en) | 2024-04-16 |
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