CN111270523B - Preparation method of durable hydrophilic polypropylene non-woven fabric - Google Patents
Preparation method of durable hydrophilic polypropylene non-woven fabric Download PDFInfo
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- CN111270523B CN111270523B CN202010176313.8A CN202010176313A CN111270523B CN 111270523 B CN111270523 B CN 111270523B CN 202010176313 A CN202010176313 A CN 202010176313A CN 111270523 B CN111270523 B CN 111270523B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- 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
- D06M11/32—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/50—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with hydrogen peroxide or peroxides of metals; with persulfuric, permanganic, pernitric, percarbonic acids or their salts
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- 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
- D06M11/51—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 sulfur, selenium, tellurium, polonium or compounds thereof
- D06M11/55—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 sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
- D06M11/56—Sulfates or thiosulfates other than of elements of Groups 3 or 13 of the Periodic System
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- 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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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- 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
- D06M13/144—Alcohols; Metal alcoholates
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/11—Oleophobic properties
Abstract
The invention discloses a preparation method of durable hydrophilic polypropylene non-woven fabric. The method comprises the following steps: (1) adding dopamine hydrochloride and CuSO 4 And H 2 O 2 Dissolving the mixture in a Tris buffer solution according to a certain proportion, uniformly stirring, and then adding silicon dioxide sol to obtain a hydrophilic finishing agent; (2) taking out the polypropylene non-woven fabric after the polypropylene non-woven fabric is arranged in a wetting agent to be wetted; (3) and (3) soaking the wetted polypropylene non-woven fabric in a hydrophilic finishing agent for 3min, taking out, pressing and rolling on a padder, then placing in a forced air drying oven at 80 ℃ for baking for 20min, and drying to obtain the hydrophilic polypropylene non-woven fabric. The polypropylene non-woven fabric obtained by the invention has excellent hydrophilic effect and good durability, and can be used in the fields of wiping cloth, water filtration and the like.
Description
Technical Field
The invention belongs to a preparation method of functional textiles, and particularly relates to a preparation method of durable hydrophilic polypropylene non-woven fabric.
Background
Over the past decades, the development of nonwoven fibers has outpaced woven, knitted and other textile products as the most growing part of the textile industry. The application of nonwoven products in the current life is ubiquitous, such as masks, surgical gowns, packaging bags, diapers, water filters, geotextiles, wallpaper, etc., and has provided countless convenience to us. Polypropylene materials are currently used in the largest amounts in nonwoven materials worldwide due to their overall performance and cost advantages, and are extremely versatile. However, the polypropylene has high crystallinity, compact molecular structure and no hydrophilic group, so that the nonwoven fabric formed by the polypropylene has poor hydrophilicity, and the application of the polypropylene nonwoven fabric in the fields of water filtration, sanitary products, wiping cloth and the like requiring products with hydrophilic performance is hindered.
The method of afterfinishing a polypropylene nonwoven fabric by an afterfinish means to impart hydrophilicity thereto has advantages of simple operation process, low requirement for equipment, high efficiency and the like, and has attracted attention of researchers. However, most researchers have chosen post-finishing hydrophilic finishes, mostly surfactants. The polypropylene non-woven fabric treated by the surfactant has good initial hydrophilicity, but the problem that the hydrophilicity durability of the non-woven fabric after finishing is poor exists, and the suitable products are disposable products such as disposable wet tissues, disposable wiping cloths and the like. The current national call for a sustainable development strategy of saving resources, saving energy and reducing consumption, and the reduction of the use of non-degradable disposable products is a more effective measure for responding to the national call. Based on this, how to develop durable hydrophilic polypropylene nonwoven fabrics has become a hot point of research in the nonwoven field.
Silica is a non-toxic inorganic particle with a surface rich in hydrophilic hydroxyl groups, is an important material for scientific research, and is widely applied to glass, optical fibers, important parts of the electronic industry, optical instruments, artware, refractory materials and the like. If it can be applied to a polypropylene nonwoven fabric, it is necessary to impart hydrophilicity to the polypropylene nonwoven fabric. Polydopamine is an adhesive with a certain hydrophilicity, and has excellent adhesion capability. If the polydopamine is blended with silica and the silica is fixed to the polypropylene nonwoven fabric by the adhesion of the polydopamine, the polypropylene nonwoven fabric must be imparted with good durable hydrophilicity.
Disclosure of Invention
The invention aims to provide a preparation method of durable hydrophilic polypropylene non-woven fabric, which comprises the steps of firstly preparing a hydrophilic finishing agent which is composed of silicon dioxide and dopamine serving as main components, then carrying out after-treatment on the polypropylene non-woven fabric in a padding baking mode, fully utilizing the hydrophilicity of the silicon dioxide and the polydopamine to endow the hydrophobic polypropylene non-woven fabric with hydrophilic performance, and the durable hydrophilic non-woven fabric can be used in the fields of wiping cloth, water filtration and the like.
A preparation method of durable hydrophilic polypropylene non-woven fabric is characterized by comprising the following steps:
(1) adding dopamine hydrochloride and CuSO 4 And H 2 O 2 Dissolving the mixture in a Tris buffer solution according to a certain proportion, uniformly stirring, and then adding silicon dioxide sol to obtain a hydrophilic finishing agent;
(2) taking out the polypropylene non-woven fabric after the polypropylene non-woven fabric is arranged in a wetting agent to be wetted;
(3) and (3) soaking the wetted polypropylene non-woven fabric in a hydrophilic finishing agent for 3min, taking out, pressing and rolling on a padder, then baking in a forced air drying oven at 80 ℃ for 20min, and drying to obtain the hydrophilic polypropylene non-woven fabric.
Preferably, the hydrophilic finishing agent in the step (1) has a pH value of 8.5.
Preferably, the particle size of the silica sol in the step (1) is 20 to 40 nm.
Preferably, the polypropylene nonwoven fabric in the step (2) is a spunbond nonwoven fabric.
Preferably, the wetting agent in the step (2) is one of ethanol and isopropanol.
Preferably, the rolling mill in step (3) has a rolling residual ratio of 90-100%.
Due to the adoption of the technical scheme, the method has the following beneficial effects:
according to the preparation method of the durable hydrophilic polypropylene non-woven fabric, the hydrophilicity of the silicon dioxide and the polydopamine is fully utilized to endow the hydrophobic polypropylene non-woven fabric with hydrophilic performance, and the preparation method has the advantages of good hydrophilic durability, simple and convenient operation process, low requirement on equipment and convenience in popularization and use.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a scanning electron microscope image of the hydrophilic polypropylene nonwoven fabric obtained in example 1;
fig. 2 shows the change of contact angle of the hydrophilic polypropylene nonwoven fabric obtained in example 1 in different time periods when the fabric is cooked in hot water at 60 ℃.
Detailed Description
The invention is further illustrated by the following specific examples:
in the following examples, reagents, materials and equipment used were commercially available or prepared by a conventional method, unless otherwise specified.
Example 1
(1) Preparation of hydrophilic finishing agent: mixing dopamine hydrochloride and CuSO 4 And H 2 O 2 Dissolving in Tris buffer solution, stirring uniformly, then adding silica sol with 20% of solid content and the particle size of 20nm, and adjusting the pH value of the solution to 8.5 to obtain a hydrophilic finishing agent;
(2) wetting pretreatment of the non-woven fabric: placing the polypropylene spun-bonded non-woven fabric in absolute ethyl alcohol, wetting for 1min, and taking out;
(3) hydrophilic finishing of the non-woven fabric: and (3) soaking the wetted polypropylene non-woven fabric in the prepared hydrophilic finishing agent for 3min, taking out, pressing and rolling on a padder, controlling the rolling residual rate to be 90%, then placing in a forced air drying oven at 80 ℃ for baking for 20min, and drying to obtain the hydrophilic polypropylene non-woven fabric.
The test shows that the water contact angle of the prepared hydrophilic polypropylene non-woven fabric is 0 degree (5 s after dropping water and the test is carried out again); two pieces of 5 multiplied by 5cm polypropylene non-woven fabrics after hydrophilic finishing are placed in hot water at 60 ℃ for boiling for 24 hours, and the water contact angle of the polypropylene non-woven fabrics is still less than 20 degrees, which shows that the polypropylene non-woven fabrics still have good hydrophilicity.
Example 2
(1) Preparation of hydrophilic finishing agent: adding dopamine hydrochloride and CuSO 4 And H 2 O 2 Dissolving in Tris buffer solution, stirring uniformly, then adding silica sol with the grain size of 40nm and the solid content of 30 percent, and adjusting the pH value of the solution to 8.5 to obtain the hydrophilic finishing agent;
(2) wetting pretreatment of the non-woven fabric: placing the polypropylene spun-bonded non-woven fabric in isopropanol, wetting for 1min, and taking out;
(3) hydrophilic finishing of the non-woven fabric: and (3) soaking the wetted polypropylene non-woven fabric in the prepared hydrophilic finishing agent for 3min, taking out, pressing and rolling on a padder, controlling the rolling residual rate to be 95%, then placing in a forced air drying oven at 80 ℃ for baking for 20min, and drying to obtain the hydrophilic polypropylene non-woven fabric.
The test shows that the water contact angle of the prepared hydrophilic polypropylene non-woven fabric is 0 degree (5 s after dropping water and the test is carried out again); after two 5 multiplied by 5cm polypropylene non-woven fabrics after hydrophilic finishing are put in hot water at 60 ℃ for boiling for 24 hours, the water contact angle of the polypropylene non-woven fabrics is still less than 20 degrees, which shows that the polypropylene non-woven fabrics still have good hydrophilicity.
Example 3
(1) Preparation of hydrophilic finishing agent: adding dopamine hydrochloride and CuSO 4 And H 2 O 2 Dissolving in Tris buffer solution, stirring uniformly, then adding silica sol with the particle size of 30nm and the solid content of 20%, and adjusting the pH value of the solution to 8.5 to obtain the hydrophilic finishing agent;
(2) wetting pretreatment of the non-woven fabric: placing the polypropylene spun-bonded non-woven fabric in 95% industrial ethanol for wetting for 1min, and taking out;
(3) hydrophilic finishing of the non-woven fabric: and (3) soaking the wetted polypropylene non-woven fabric in the prepared hydrophilic finishing agent for 3min, taking out, pressing and rolling on a padder, controlling the rolling residual rate to be 100%, then placing in a forced air drying oven at 80 ℃ for baking for 20min, and drying to obtain the hydrophilic polypropylene non-woven fabric.
The test shows that the water contact angle of the prepared hydrophilic polypropylene non-woven fabric is 0 degree (5 s after dropping water and the test is carried out again); two pieces of 5 multiplied by 5cm polypropylene non-woven fabrics after hydrophilic finishing are placed in hot water at 60 ℃ for boiling for 24 hours, and the water contact angle of the polypropylene non-woven fabrics is still less than 20 degrees, which shows that the polypropylene non-woven fabrics still have good hydrophilicity.
Example 4
(1) Preparation of hydrophilic finishing agent: adding dopamine hydrochloride and CuSO 4 And H 2 O 2 Dissolving in Tris buffer solution and stirringUniformly mixing, adding 30% solid content silica sol with the particle size of 30nm, and adjusting the pH value of the solution to 8.5 to obtain a hydrophilic finishing agent;
(2) wetting pretreatment of the non-woven fabric: placing the polypropylene spun-bonded non-woven fabric in isopropanol, wetting for 1min, and taking out;
(3) hydrophilic finishing of the non-woven fabric: and (3) soaking the wetted polypropylene non-woven fabric in the prepared hydrophilic finishing agent for 3min, taking out, pressing and rolling on a padder, controlling the rolling residual rate to be 95%, then placing in a forced air drying oven at 80 ℃ for baking for 20min, and drying to obtain the hydrophilic polypropylene non-woven fabric.
The test shows that the water contact angle of the prepared hydrophilic polypropylene non-woven fabric is 0 degree (5 s after dropping water and the test is carried out again); two pieces of 5 multiplied by 5cm polypropylene non-woven fabrics after hydrophilic finishing are placed in hot water at 60 ℃ for boiling for 24 hours, and the water contact angle of the polypropylene non-woven fabrics is still less than 20 degrees, which shows that the polypropylene non-woven fabrics still have good hydrophilicity.
The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to solve the same technical problems and achieve the same technical effects are all covered in the protection scope of the present invention.
Claims (3)
1. A preparation method of durable hydrophilic polypropylene non-woven fabric is characterized by comprising the following steps:
(1) adding dopamine hydrochloride and CuSO 4 And H 2 O 2 Dissolving the mixture in a Tris buffer solution according to a certain proportion, uniformly stirring, and then adding silicon dioxide sol to obtain a hydrophilic finishing agent;
(2) taking out the polypropylene non-woven fabric after the polypropylene non-woven fabric is arranged in a wetting agent to be wetted;
(3) soaking the wetted polypropylene non-woven fabric in a hydrophilic finishing agent for 3min, taking out, pressing and rolling on a padder, then placing in a forced air drying oven at 80 ℃ for baking for 20min, and drying to obtain the hydrophilic polypropylene non-woven fabric;
the pH value of the hydrophilic finishing agent in the step (1) is 8.5;
the particle size of the silica sol in the step (1) is 20-40 nm;
in the step (2), the wetting agent is one of ethanol and isopropanol.
2. The method of claim 1, wherein the step of preparing a durable hydrophilic polypropylene nonwoven comprises: the polypropylene non-woven fabric in the step (2) is a spun-bonded non-woven fabric.
3. The method of claim 1, wherein the step of preparing a durable hydrophilic polypropylene nonwoven comprises: the rolling mill in the step (3) has a rolling residual rate of 90-100%.
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| CN109722900A (en) * | 2019-01-28 | 2019-05-07 | 扬州大学 | Ultra-hydrophobic conductive compound fabric with electromagnetic shielding performance and preparation method thereof |
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| CN107130429A (en) * | 2017-06-26 | 2017-09-05 | 浙江理工大学 | A kind of method of the dopamine in non-aqueous media environment or derivatives thereof in synthetic fibers surface fast deposition |
| CN108579475A (en) * | 2018-03-12 | 2018-09-28 | 浙江大学 | Inner surface hydrophilic modifying hollow-fibre membrane and its preparation method and application |
| CN109355907A (en) * | 2018-10-26 | 2019-02-19 | 福州大学 | A kind of super-hydrophobic coat method for sorting that wearable environment protection is degradable |
| CN109722900A (en) * | 2019-01-28 | 2019-05-07 | 扬州大学 | Ultra-hydrophobic conductive compound fabric with electromagnetic shielding performance and preparation method thereof |
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Effective date of registration: 20220824 Address after: 313100 Green Intelligent Manufacturing Industrial Park, Changxing District, South Taihu industrial cluster, Changxing County, Huzhou City, Zhejiang Province Applicant after: Zhejiang Chengpin Nonwoven Technology Co.,Ltd. Address before: 310018 No. 2 street, Xiasha Higher Education Park, Hangzhou, Zhejiang, 928 Applicant before: ZHEJIANG SCI-TECH University |
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