CN114369903A - Anti-aging hydrophilic non-woven fabric and preparation method thereof - Google Patents
Anti-aging hydrophilic non-woven fabric and preparation method thereof Download PDFInfo
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
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- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
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- 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
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- 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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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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
- D06M2101/26—Polymers or copolymers of unsaturated carboxylic acids or derivatives thereof
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/50—Modified hand or grip properties; Softening compositions
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Abstract
The invention discloses an anti-aging hydrophilic non-woven fabric which is prepared from the following raw materials in parts by weight: 25-35 parts of 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-one copolymer, 40-60 parts of amino-terminated polypropylene, 10-15 parts of ethylene glycol diglycidyl ether and 3-5 parts of safranine. The invention also discloses a preparation method of the anti-aging hydrophilic non-woven fabric. The anti-aging hydrophilic non-woven fabric disclosed by the invention is good in anti-aging performance, sufficient in hydrophilicity, soft and smooth in hand feeling and long in service life.
Description
Technical Field
The invention relates to the technical field of non-woven fabric production, in particular to an anti-aging hydrophilic non-woven fabric and a preparation method thereof.
Background
The non-woven fabric is a fabric formed without spinning woven fabric, and is formed by forming a fiber web structure by directionally or randomly arranging textile short fibers or filaments and then reinforcing the fiber web structure by adopting a mechanical method, a thermal bonding method or a chemical method and the like. Compared with the traditional textile cloth, the non-woven cloth has the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity, no irritation, rich colors, low price, recycling and the like, and is widely applied to medical and sanitary cloth, household decorative cloth, industrial cloth, agricultural cloth, space cotton and the like.
The existing non-woven fabric has good hydrophobicity, so that the product has the advantages of no mildew or no damage by mildew or moth. However, the hydrophobic property causes the non-woven fabric to have the defects of easy electrostatic generation and insufficient skin affinity in the application process, and the application requirement on occasions with high water absorbability, such as medical and sanitary cloth, cannot be met. In order to improve the hydrophilicity of nonwovens, this is usually achieved by surface hydrophilization. However, the product prepared by the method has hard hand feeling, and if the slipping agent is added for spinning and then hydrophilic surface finishing is carried out, the product has the problem that the hydrophilic effect is possibly lost.
The aging resistance is another important index for measuring the quality of the non-woven fabric, and the performance of the non-woven fabric directly influences the durability and the service life of the non-woven fabric. The existing non-woven fabric generally has the problem of poor aging resistance, and an anti-aging agent is usually added for improving the aging resistance, but due to the compatibility problem between the anti-aging agent and the main raw materials of the non-woven fabric, the anti-aging agent can be leaked out in the long-term use process, so that the service life and the performance stability of the non-woven fabric are influenced.
In order to solve the above problems, chinese patent CN102251345B proposes a hydrophilic non-woven fabric with high water absorption and a manufacturing process thereof, wherein the hydrophilic non-woven fabric is made of polypropylene (PP) or polyvinyl chloride (PVC) material, and is formed by screw extrusion spraying, web formation, rolling into a web by a rolling mill, a hydrophilic process and hydrophilic fabric forming, so as to obtain the required hydrophilic non-woven fabric. The hydrophilic non-woven fabric produced by the manufacturing process has the advantages of high hydrophilic speed, good flexibility, comfortable hand feeling and stable hydrophilic performance, and is particularly suitable for the field with higher water absorption requirements, such as medical treatment and health. However, the aging resistance, slip property and property stability thereof are to be further improved.
Therefore, it is an urgent problem to be solved by researchers in the industry at present how to provide an anti-aging hydrophilic non-woven fabric with good anti-aging performance, sufficient hydrophilicity, soft and smooth hand feeling, and long service life, and a preparation method thereof.
Disclosure of Invention
The invention mainly aims to provide an anti-aging hydrophilic non-woven fabric which has good anti-aging performance, enough hydrophilicity, soft and smooth hand feeling and long service life and a preparation method thereof.
In order to achieve the purpose, the invention provides an anti-aging hydrophilic non-woven fabric which is characterized by comprising the following raw materials in parts by weight: 25-35 parts of 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-one copolymer, 40-60 parts of amino-terminated polypropylene, 10-15 parts of ethylene glycol diglycidyl ether and 3-5 parts of safranine.
Preferably, the preparation method of the 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamido-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazol-2-one copolymer comprises the following steps: adding 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate, 2-acrylamide-2-methylpropanesulfonic acid, 5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-ketone and an initiator into a high boiling point solvent, stirring and reacting for 3-6 hours at 50-65 ℃ in an inert gas atmosphere, precipitating in water, washing the precipitated polymer for 3-6 times by using ethanol, and finally drying in a vacuum drying box at 85-95 ℃ to constant weight to obtain 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropane Sulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazol-2-one copolymers.
Preferably, the mass ratio of the 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate, the 2-acrylamido-2-methylpropanesulfonic acid, the 5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazol-2-one, the initiator and the high-boiling point solvent is (3-5): 1-3):1 (0.05-0.09): 25-40.
Preferably, the initiator is azobisisobutyronitrile.
Preferably, the high boiling point solvent is at least one of dimethyl sulfoxide, N-dimethylformamide and N, N-dimethylacetamide.
Preferably, the inert gas is nitrogen.
Preferably, the amino-terminated polypropylene has a molecular weight of 13000-90000g/mol and an amino-terminated functionality of 0.80-0.92.
More preferably, the amino-terminated polypropylene is prepared according to the method of example 8 in the Chinese patent CN 101812147B.
Further, the CAS number of the 5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazol-2-one is 406945-10-6.
Another object of the present invention is to provide a method for preparing the aging-resistant hydrophilic nonwoven fabric, comprising: mixing the raw materials except the ethylene glycol diglycidyl ether uniformly according to parts by weight to obtain a mixed material, adding the mixed material into a double-screw extruder, sequentially carrying out melt-blowing, web formation, rolling into cloth by a rolling mill, soaking the ethanol solution of the ethylene glycol diglycidyl ether, drying and curing, washing with clear water, and drying to prepare the anti-aging hydrophilic non-woven fabric.
Preferably, the temperature of the rolling mill during rolling is 115-155 ℃, and the speed of the non-woven fabric passing through the hot roller of the rolling mill is 150-270 r/m.
Preferably, the mass percentage concentration of the ethanol solution of the ethylene glycol diglycidyl ether is 15-30 wt%.
Preferably, the temperature for drying and curing is 70-80 ℃ and the time is 2-5 hours.
Due to the application of the technical scheme, the invention has the following beneficial effects:
(1) the preparation method of the anti-aging hydrophilic non-woven fabric disclosed by the invention can be realized by adopting conventional equipment and a production line, and has the advantages of low capital investment, low energy consumption, high preparation efficiency and yield and remarkable economic and social benefits.
(2) The invention discloses an anti-aging hydrophilic non-woven fabric, which is prepared by adding 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-one copolymer and amino-terminated polypropylene into a non-woven fabric to prepare a base material, wherein the base material and the base material both belong to polyolefin polymers and have good compatibility; through the addition of the 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluorine-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-ketone copolymer, benzotriazole, hydroxyphenyl, ester group, amide group, sulfonic group and fluorine-containing benzimidazole ketone group are introduced into the molecular structure of the non-woven fabric substrate, and under the multiple actions of electronic effect, steric effect and conjugate effect, the prepared non-woven fabric has excellent aging resistance, good durability and long service life.
(3) The invention discloses an anti-aging hydrophilic non-woven fabric, wherein sulfonic anions on a 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-ketone copolymer can be connected with cations on safranine through ionic bonds; epoxy groups on the ethylene glycol diglycidyl ether can perform an epoxy ring-opening reaction with amino groups on the amino-terminated polypropylene and the phenol saffron to form an interpenetrating network structure, so that the comprehensive performance and the performance stability of the non-woven fabric are effectively improved, and the non-woven fabric has better aging resistance; the ethylene glycol structure introduced by the ethylene glycol diglycidyl ether, the hydroxyl structure generated by the epoxy ring-opening reaction and the ionic bond structure are mutually matched and act together, so that the excellent hydrophilicity and skin-friendly property of the non-woven fabric are ensured.
(4) According to the anti-aging hydrophilic non-woven fabric disclosed by the invention, the raw materials are mutually matched and act together, so that the manufactured non-woven fabric not only keeps various advantages of the traditional non-woven fabric, but also improves the hydrophilicity and the anti-aging performance, the performance stability is improved, the service life of the non-woven fabric is prolonged, the hand feeling of the non-woven fabric is improved, the texture is soft, the smoothness is also realized, and the product grade is further improved.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
Example 1
The aging-resistant hydrophilic non-woven fabric is characterized by comprising the following raw materials in parts by weight: 25 parts of 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-one copolymer, 40 parts of amino-terminated polypropylene, 10 parts of ethylene glycol diglycidyl ether and 3 parts of safranine.
The preparation method of the 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-one copolymer comprises the following steps: adding 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate, 2-acrylamide-2-methylpropanesulfonic acid, 5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-ketone and an initiator into a high boiling point solvent, stirring and reacting for 3 hours at 50 ℃ in an inert gas atmosphere, precipitating in water, washing the precipitated polymer for 3 times by using ethanol, and finally drying in a vacuum drying box at 85 ℃ to constant weight to obtain 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1- Isopropenyl-1, 3-dihydro-2H-benzimidazol-2-one copolymers.
The mass ratio of the 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate, 2-acrylamide-2-methylpropanesulfonic acid, 5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-ketone, the initiator and the high-boiling point solvent is 3:1:1:0.05: 25.
The initiator is azobisisobutyronitrile; the high boiling point solvent is dimethyl sulfoxide; the inert gas is nitrogen; the amino-terminated polypropylene is prepared according to the method of example 8 in Chinese patent CN 101812147B.
A preparation method of the aging-resistant hydrophilic non-woven fabric comprises the following steps: mixing the raw materials except the ethylene glycol diglycidyl ether uniformly according to parts by weight to obtain a mixed material, adding the mixed material into a double-screw extruder, sequentially carrying out melt-blowing, web formation, rolling into cloth by a rolling mill, soaking the ethanol solution of the ethylene glycol diglycidyl ether, drying and curing, washing with clear water, and drying to prepare the anti-aging hydrophilic non-woven fabric.
The temperature of the rolling mill during rolling is 115 ℃, and the speed of the non-woven fabric passing through the hot roller of the rolling mill is 150 r/min; the mass percentage concentration of the ethanol solution of the ethylene glycol diglycidyl ether is 15 wt%; the temperature for drying and curing is 70 ℃ and the time is 2 hours.
Example 2
The aging-resistant hydrophilic non-woven fabric is characterized by comprising the following raw materials in parts by weight: 28 parts of 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-one copolymer, 45 parts of amino-terminated polypropylene, 12 parts of ethylene glycol diglycidyl ether and 3.5 parts of safranine.
The preparation method of the 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-one copolymer comprises the following steps: adding 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate, 2-acrylamide-2-methylpropanesulfonic acid, 5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-ketone and an initiator into a high boiling point solvent, stirring and reacting for 4 hours at 55 ℃ in an inert gas atmosphere, precipitating in water, washing the precipitated polymer for 4 times by using ethanol, and finally drying in a vacuum drying box at 87 ℃ to constant weight to obtain 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1- Isopropenyl-1, 3-dihydro-2H-benzimidazol-2-one copolymers.
The mass ratio of the 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate, 2-acrylamide-2-methylpropanesulfonic acid, 5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-ketone, the initiator and the high-boiling point solvent is 3.5:1.5:1:0.06: 29.
The initiator is azobisisobutyronitrile; the high boiling point solvent is dimethyl sulfoxide; the inert gas is nitrogen.
The amino-terminated polypropylene is prepared according to the method of example 8 in Chinese patent CN 101812147B.
A preparation method of the aging-resistant hydrophilic non-woven fabric comprises the following steps: mixing the raw materials except the ethylene glycol diglycidyl ether uniformly according to parts by weight to obtain a mixed material, adding the mixed material into a double-screw extruder, sequentially carrying out melt-blowing, web formation, rolling into cloth by a rolling mill, soaking the ethanol solution of the ethylene glycol diglycidyl ether, drying and curing, washing with clear water, and drying to prepare the anti-aging hydrophilic non-woven fabric; the temperature of the rolling mill during rolling is 125 ℃, and the speed of the non-woven fabric passing through the hot roller of the rolling mill is 180 r/min; the mass percentage concentration of the ethanol solution of the ethylene glycol diglycidyl ether is 19 wt%; the temperature for drying and curing is 73 ℃ and the time is 3 hours.
Example 3
The aging-resistant hydrophilic non-woven fabric is characterized by comprising the following raw materials in parts by weight: the high-performance liquid crystal display panel comprises, by weight, 30 parts of 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-one copolymer, 50 parts of amino-terminated polypropylene, 13 parts of ethylene glycol diglycidyl ether and 4 parts of safranine.
The preparation method of the 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-one copolymer comprises the following steps: adding 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate, 2-acrylamide-2-methylpropanesulfonic acid, 5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-ketone and an initiator into a high boiling point solvent, stirring and reacting for 4.5 hours at 58 ℃ in an inert gas atmosphere, precipitating in water, washing the precipitated polymer for 5 times by using ethanol, and finally drying in a vacuum drying box at 90 ℃ to constant weight to obtain 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1- Isopropenyl-1, 3-dihydro-2H-benzimidazol-2-one copolymers.
The mass ratio of the 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate, 2-acrylamide-2-methylpropanesulfonic acid, 5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-ketone, the initiator and the high-boiling point solvent is 4:2:1:0.07: 32; the initiator is azobisisobutyronitrile; the high boiling point solvent is N, N-dimethylacetamide; the inert gas is nitrogen.
The amino-terminated polypropylene is prepared according to the method of example 8 in Chinese patent CN 101812147B.
A preparation method of the aging-resistant hydrophilic non-woven fabric comprises the following steps: mixing the raw materials except the ethylene glycol diglycidyl ether uniformly according to parts by weight to obtain a mixed material, adding the mixed material into a double-screw extruder, sequentially carrying out melt-blowing, web formation, rolling into cloth by a rolling mill, soaking the ethanol solution of the ethylene glycol diglycidyl ether, drying and curing, washing with clear water, and drying to prepare the anti-aging hydrophilic non-woven fabric; the temperature of the rolling mill during rolling is 135 ℃, and the speed of the non-woven fabric passing through the hot roller of the rolling mill is 210 r/min; the mass percentage concentration of the ethanol solution of the ethylene glycol diglycidyl ether is 23 wt%; the temperature for drying and curing is 75 ℃ and the time is 3.5 hours.
Example 4
The aging-resistant hydrophilic non-woven fabric is characterized by comprising the following raw materials in parts by weight: 33 parts of 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-one copolymer, 55 parts of amino-terminated polypropylene, 14 parts of ethylene glycol diglycidyl ether and 4.5 parts of safranine phenate.
The preparation method of the 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-one copolymer comprises the following steps: adding 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate, 2-acrylamide-2-methylpropanesulfonic acid, 5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-ketone and an initiator into a high boiling point solvent, stirring and reacting for 5.5 hours at 63 ℃ in an inert gas atmosphere, precipitating in water, washing the precipitated polymer for 6 times by using ethanol, and finally drying in a vacuum drying box at 92 ℃ to constant weight to obtain 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1- Isopropenyl-1, 3-dihydro-2H-benzimidazol-2-one copolymers.
The mass ratio of the 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate, 2-acrylamido-2-methylpropanesulfonic acid, 5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazol-2-one, the initiator and the high-boiling point solvent is 4.5:2.5:1:0.08: 37; the initiator is azobisisobutyronitrile; the high-boiling-point solvent is a mixture formed by mixing dimethyl sulfoxide, N-dimethylformamide and N, N-dimethylacetamide according to a mass ratio of 1:2: 4; the inert gas is nitrogen; the amino-terminated polypropylene is prepared according to the method of example 8 in Chinese patent CN 101812147B.
A preparation method of the aging-resistant hydrophilic non-woven fabric comprises the following steps: mixing the raw materials except the ethylene glycol diglycidyl ether uniformly according to parts by weight to obtain a mixed material, adding the mixed material into a double-screw extruder, sequentially carrying out melt-blowing, web formation, rolling into cloth by a rolling mill, soaking the ethanol solution of the ethylene glycol diglycidyl ether, drying and curing, washing with clear water, and drying to prepare the anti-aging hydrophilic non-woven fabric; the temperature of the rolling mill is 150 ℃, and the speed of the non-woven fabric passing through the hot roller of the rolling mill is 260 r/min; the mass percentage concentration of the ethanol solution of the ethylene glycol diglycidyl ether is 27 wt%; the temperature for drying and curing is 78 ℃ and the time is 4.5 hours.
Example 5
The aging-resistant hydrophilic non-woven fabric is characterized by comprising the following raw materials in parts by weight: 35 parts of 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-one copolymer, 60 parts of amino-terminated polypropylene, 15 parts of ethylene glycol diglycidyl ether and 5 parts of safranine.
The preparation method of the 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-one copolymer comprises the following steps: adding 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate, 2-acrylamide-2-methylpropanesulfonic acid, 5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-ketone and an initiator into a high boiling point solvent, stirring and reacting for 6 hours at 65 ℃ in an inert gas atmosphere, precipitating in water, washing the precipitated polymer for 6 times by using ethanol, and finally drying in a vacuum drying box at 95 ℃ to constant weight to obtain 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1- Isopropenyl-1, 3-dihydro-2H-benzimidazol-2-one copolymers.
The mass ratio of the 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate, 2-acrylamide-2-methylpropanesulfonic acid, 5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-ketone, the initiator and the high-boiling point solvent is 5:3:1:0.09: 40; the initiator is azobisisobutyronitrile; the high boiling point solvent is dimethyl sulfoxide; the inert gas is nitrogen; the amino-terminated polypropylene is prepared according to the method of example 8 in Chinese patent CN 101812147B.
A preparation method of the aging-resistant hydrophilic non-woven fabric comprises the following steps: mixing the raw materials except the ethylene glycol diglycidyl ether uniformly according to parts by weight to obtain a mixed material, adding the mixed material into a double-screw extruder, sequentially carrying out melt-blowing, web formation, rolling into cloth by a rolling mill, soaking the ethanol solution of the ethylene glycol diglycidyl ether, drying and curing, washing with clear water, and drying to prepare the anti-aging hydrophilic non-woven fabric; the temperature of the rolling mill during rolling is 155 ℃, and the speed of the non-woven fabric passing through the hot roller of the rolling mill is 270 r/min; the mass percentage concentration of the ethanol solution of the ethylene glycol diglycidyl ether is 30 wt%; the temperature for drying and curing is 80 ℃ and the time is 5 hours.
Comparative example 1
An aging-resistant hydrophilic nonwoven fabric of similar formulation and preparation to example 1 except that 2- [3- (2H-benzotriazol-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamido-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazol-2-one copolymer was prepared without the addition of 5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazol-2-one.
Comparative example 2
An aging-resistant hydrophilic nonwoven fabric having a formulation and a preparation process similar to those of example 1, except that amino-terminated polypropylene was replaced with Shanghai petrochemical grade T30S general-purpose homo-polypropylene.
To further illustrate the beneficial technical effects of the aging-resistant hydrophilic nonwoven fabrics prepared in the embodiments of the present invention, the aging-resistant hydrophilic nonwoven fabrics prepared in the embodiments 1 to 5 and the comparative examples 1 to 2 were subjected to the related performance tests, the test results are shown in table 1, and the test methods are as follows:
(1) burst strength of nonwoven fabric: according to ISO standard 13938-1999, a pressure of 0.8Kg/cm2。
(2) Contact angle: the contact angle is smaller, the surface wettability is better, and the hydrophilicity is better when the test is carried out by using DB 44/T1872-2016.
(3) Aging resistance: after the nonwoven fabric was placed in hot air at 85 ℃ for 96 hours, the retention of the burst strength was measured and calculated, and the larger the value, the better the aging resistance.
As can be seen from table 1, the aging-resistant hydrophilic nonwoven fabric disclosed in the embodiments of the present invention has more excellent hydrophilicity, mechanical properties, and aging resistance. Through blind touch of experts, the non-woven fabric products in the embodiments of the invention are soft and smooth in hand feeling.
TABLE 1
| Item | Burst strength | Contact angle | Aging resistance |
| Unit of | Kg/cm2 | ° | % |
| Example 1 | 2.9 | 62 | 97.2 |
| Example 2 | 3.1 | 58 | 98.0 |
| Example 3 | 3.2 | 56 | 98.5 |
| Example 4 | 3.5 | 53 | 99.2 |
| Example 5 | 3.4 | 52 | 99.7 |
| Comparative example 1 | 2.6 | 60 | 93.2 |
| Comparative example 2 | 2.3 | 65 | 95.0 |
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The aging-resistant hydrophilic non-woven fabric is characterized by comprising the following raw materials in parts by weight: 25-35 parts of 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-one copolymer, 40-60 parts of amino-terminated polypropylene, 10-15 parts of ethylene glycol diglycidyl ether and 3-5 parts of safranine.
2. The aging-resistant hydrophilic nonwoven fabric according to claim 1, wherein the preparation method of the 2- [3- (2H-benzotriazol-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamido-2-methylpropanesulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazol-2-one copolymer comprises the following steps: adding 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate, 2-acrylamide-2-methylpropanesulfonic acid, 5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazole-2-ketone and an initiator into a high boiling point solvent, stirring and reacting for 3-6 hours at 50-65 ℃ in an inert gas atmosphere, precipitating in water, washing the precipitated polymer for 3-6 times by using ethanol, and finally drying in a vacuum drying box at 85-95 ℃ to constant weight to obtain 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate/2-acrylamide-2-methylpropane Sulfonic acid/5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazol-2-one copolymers.
3. The aging-resistant hydrophilic nonwoven fabric according to claim 2, wherein the mass ratio of the 2- [3- (2H-benzotriazol-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate, the 2-acrylamido-2-methylpropanesulfonic acid, the 5-fluoro-1-isopropenyl-1, 3-dihydro-2H-benzimidazol-2-one, the initiator, and the high-boiling solvent is (3-5): (1-3):1 (0.05-0.09): (25-40).
4. The aging-resistant hydrophilic nonwoven fabric of claim 2, wherein the initiator is azobisisobutyronitrile; the high boiling point solvent is at least one of dimethyl sulfoxide, N-dimethylformamide and N, N-dimethylacetamide; the inert gas is nitrogen.
5. The aging-resistant hydrophilic nonwoven fabric as claimed in claim 1, wherein the amino-terminated polypropylene has a molecular weight of 13000-90000g/mol and an amino-terminated functionality of 0.80-0.92.
6. A method for preparing the aging-resistant hydrophilic non-woven fabric according to any one of claims 1 to 5, which comprises the following steps: mixing the raw materials except the ethylene glycol diglycidyl ether uniformly according to parts by weight to obtain a mixed material, adding the mixed material into a double-screw extruder, sequentially carrying out melt-blowing, web formation, rolling into cloth by a rolling mill, soaking the ethanol solution of the ethylene glycol diglycidyl ether, drying and curing, washing with clear water, and drying to prepare the anti-aging hydrophilic non-woven fabric.
7. The method for preparing an aging-resistant hydrophilic nonwoven fabric as claimed in claim 6, wherein the temperature of the rolling mill during rolling is 115 ℃ to 155 ℃, and the speed of the nonwoven fabric passing through the hot roll of the rolling mill is 150 and 270 rpm.
8. The preparation method of the aging-resistant hydrophilic non-woven fabric according to claim 6, wherein the mass percentage concentration of the ethanol solution of ethylene glycol diglycidyl ether is 15-30 wt%; the temperature for drying and curing is 70-80 ℃ and the time is 2-5 hours.
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