CN117344550A - Water-permeable non-woven fabric and preparation process thereof - Google Patents
Water-permeable non-woven fabric and preparation process thereof Download PDFInfo
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- CN117344550A CN117344550A CN202311374294.XA CN202311374294A CN117344550A CN 117344550 A CN117344550 A CN 117344550A CN 202311374294 A CN202311374294 A CN 202311374294A CN 117344550 A CN117344550 A CN 117344550A
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- water
- woven fabric
- silicone oil
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- hydrophilic agent
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 128
- 238000002360 preparation method Methods 0.000 title claims abstract description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 30
- 150000001875 compounds Chemical class 0.000 claims abstract description 27
- 239000003945 anionic surfactant Substances 0.000 claims abstract description 16
- -1 polypropylene Polymers 0.000 claims abstract description 16
- 239000004743 Polypropylene Substances 0.000 claims abstract description 15
- 229920001155 polypropylene Polymers 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 239000002562 thickening agent Substances 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 238000005086 pumping Methods 0.000 claims abstract description 5
- 238000007493 shaping process Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 4
- 229920002545 silicone oil Polymers 0.000 claims description 56
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 49
- 229920000570 polyether Polymers 0.000 claims description 49
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 32
- QLCFPDLVOCOPON-UHFFFAOYSA-N CCC(CO)(CO)CO.CC(O)COC(C)COC(C)CO Chemical compound CCC(CO)(CO)CO.CC(O)COC(C)COC(C)CO QLCFPDLVOCOPON-UHFFFAOYSA-N 0.000 claims description 27
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 20
- STMDPCBYJCIZOD-UHFFFAOYSA-N 2-(2,4-dinitroanilino)-4-methylpentanoic acid Chemical compound CC(C)CC(C(O)=O)NC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O STMDPCBYJCIZOD-UHFFFAOYSA-N 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000003054 catalyst Substances 0.000 claims description 6
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 6
- 108700004121 sarkosyl Proteins 0.000 claims description 6
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 6
- 229940057950 sodium laureth sulfate Drugs 0.000 claims description 6
- KSAVQLQVUXSOCR-UHFFFAOYSA-M sodium lauroyl sarcosinate Chemical compound [Na+].CCCCCCCCCCCC(=O)N(C)CC([O-])=O KSAVQLQVUXSOCR-UHFFFAOYSA-M 0.000 claims description 6
- 229940045885 sodium lauroyl sarcosinate Drugs 0.000 claims description 6
- SXHLENDCVBIJFO-UHFFFAOYSA-M sodium;2-[2-(2-dodecoxyethoxy)ethoxy]ethyl sulfate Chemical compound [Na+].CCCCCCCCCCCCOCCOCCOCCOS([O-])(=O)=O SXHLENDCVBIJFO-UHFFFAOYSA-M 0.000 claims description 6
- 238000013329 compounding Methods 0.000 claims description 5
- FPVVYTCTZKCSOJ-UHFFFAOYSA-N Ethylene glycol distearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCOC(=O)CCCCCCCCCCCCCCCCC FPVVYTCTZKCSOJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- 229940100608 glycol distearate Drugs 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 claims description 2
- 239000005018 casein Substances 0.000 claims description 2
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 claims description 2
- 235000021240 caseins Nutrition 0.000 claims description 2
- 229920000609 methyl cellulose Polymers 0.000 claims description 2
- 239000001923 methylcellulose Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 238000010010 raising Methods 0.000 claims description 2
- 230000035699 permeability Effects 0.000 abstract description 24
- 239000000047 product Substances 0.000 abstract description 9
- 239000012466 permeate Substances 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 description 28
- 230000000052 comparative effect Effects 0.000 description 7
- 238000009835 boiling Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000006459 hydrosilylation reaction Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000007142 ring opening reaction Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0038—Polyolefin fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/12—Permeability or impermeability properties
- D06N2209/126—Permeability to liquids, absorption
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The application relates to the technical field of non-woven fabrics, and particularly discloses a water-permeable non-woven fabric and a preparation process thereof. The hydrophilic agent is water-permeable non-woven fabric formed by uniformly coating the hydrophilic agent on polypropylene fibers, and comprises the following raw materials in parts by weight: 3-6 parts of anionic surfactant, 15-25 parts of compound, 8-16 parts of polyvinyl alcohol, 10-20 parts of glycerol, 1-3 parts of thickener and 80-100 parts of water; the preparation process comprises the following steps: melt-extruding polypropylene, filtering, pumping oil, drawing wire, cooling, molding, compacting, compressing and shaping to obtain a non-woven fabric primary product; placing the anionic surfactant, the compound, the polyvinyl alcohol, the glycerol and the thickener into water, and uniformly mixing to obtain a hydrophilic agent; uniformly coating the hydrophilic agent on the non-woven fabric primary product, and drying to obtain the water-permeable non-woven fabric. The non-woven fabrics permeates water of this application, through the synergism between the raw materials, has the advantage that improves the non-woven fabrics water permeability.
Description
Technical Field
The application relates to the technical field of non-woven fabrics, in particular to a water-permeable non-woven fabric and a preparation process thereof.
Background
The non-woven fabric is also called non-woven fabric, needled cotton, needled non-woven fabric and the like, and is formed by carrying out directional or random array support on textile short fibers or filaments to form a fiber web structure and then reinforcing by adopting mechanical, thermal bonding or chemical methods and the like. Compared with the traditional textile cloth, the novel flame-retardant textile cloth has the characteristics of short process flow, high production speed, high yield, low cost, wide application range and the like, and has the advantages of ventilation, flexibility, thinness, flame retardance, no toxicity and smell, low price and the like.
Among them, a nonwoven fabric made of polypropylene fiber has no wet feeling at a portion contacting with the skin due to the characteristics of the raw material, and is comfortable to the touch with the skin, and can be used as a sanitary article such as a disposable diaper and a diaper. Such nonwoven fabrics require high water permeability, but polypropylene fibers have water repellency, and therefore, the water permeability of the nonwoven fabrics is poor, which affects the use of disposable diapers, diaper pads, and the like.
Disclosure of Invention
In order to improve the water permeability of the non-woven fabric, the application provides a water permeable non-woven fabric and a preparation process thereof.
In a first aspect, the present application provides a water permeable nonwoven fabric, which adopts the following technical scheme:
the water-permeable non-woven fabric is formed by uniformly coating a hydrophilic agent on polypropylene fibers, wherein the hydrophilic agent comprises the following raw materials in parts by weight: 3-6 parts of anionic surfactant, 15-25 parts of compound, 8-16 parts of polyvinyl alcohol, 10-20 parts of glycerol, 1-3 parts of thickener and 80-100 parts of water; wherein the compound is formed by compounding amino-terminated trimethylolpropane tripropylene glycol ether and modified polyether silicone oil.
Through adopting above-mentioned technical scheme, the non-woven fabrics that permeates water of this application, through the synergism between each raw materials, not only can make the non-woven fabrics keep good compliance, can also improve the water permeability of non-woven fabrics, wherein, water contact angle is 50.2-64.6, and the water retention is 63.3-85.6%, and compliance is 23.2-23.5mN.
The non-woven fabric is composed of polypropylene fibers, and the hydrophilic agent is uniformly coated on the non-woven fabric, so that the water permeability of the non-woven fabric is improved. The anionic surfactant has hydrophilic groups such as sulfonic groups and the like, and has better wetting and permeability; polyvinyl alcohol is a polymer with strong hydrophilicity, glycerol also has strong hydrophilicity, and a thickening agent can increase viscosity and consistency; the water permeability of the non-woven fabric can be improved by adding the anionic surfactant, the polyvinyl alcohol and the glycerol into the raw materials of the hydrophilic agent and then coating the hydrophilic agent on the non-woven fabric.
The compound is formed by compounding amino-terminated trimethylolpropane tripropylene glycol ether and modified polyether silicone oil, wherein the modified polyether silicone oil is an organosilicon nonionic surfactant and has polyether segments, and the polyether segments are hydrophilic groups, so that the modified polyether silicone oil also has stronger hydrophilicity, the moisture absorption function of the non-woven fabric can be improved, and the water permeability of the non-woven fabric can be improved when the modified polyether silicone oil is applied to the non-woven fabric; however, the modified polyether silicone oil is added into the nonwoven fabric, so that the softness of the nonwoven fabric is reduced, the nonwoven fabric is mainly used for disposable diapers, urine pads and the like, the nonwoven fabric is directly contacted with the skin, and the softness of the nonwoven fabric is required to be ensured, so that the softness of the modified polyether silicone oil can be improved by compounding the amino-terminated trimethylolpropane tripropyleneglycol ether and the modified polyether silicone oil, and the hydrophilicity is further improved along with the increase of ether segments and hydroxyl groups, so that the water permeability of the nonwoven fabric is further enhanced.
As preferable: the compound is prepared by the following method: and (3) putting the modified polyether silicone oil and the amino-terminated trimethylolpropane tripropylene glycol ether into isopropanol, uniformly mixing, heating, raising the temperature, reacting, and distilling under reduced pressure to obtain the compound.
Further, the complex is prepared by the following method: putting the modified polyether silicone oil and the amino-terminated trimethylolpropane tripropylene glycol ether into isopropanol, uniformly mixing, heating, reacting for 5-7h, and distilling under reduced pressure to obtain a compound; wherein the addition amount of the isopropanol is 20-40wt% of the modified polyether silicone oil.
By adopting the technical scheme, the compound is prepared by using the preparation method, so that the compound and the non-woven fabric can be better compounded, the compound and the non-woven fabric can play a role conveniently, and the water permeability of the non-woven fabric can be improved.
As preferable: the weight ratio of the modified polyether silicone oil to the amino-terminated trimethylolpropane tripropylene glycol ether is 1: (0.8-1.6).
The addition amount of the amino-terminated trimethylolpropane tripropylene glycol ether is too small, so that the inflexibility of the modified polyether silicone oil cannot be improved better, and the modified polyether silicone oil cannot show better hydrophilicity; the addition of an excessive amount of the amino-terminated trimethylolpropane tripropylene glycol ether increases flexibility, but the hydrophilicity is not increased any more, and thus the raw material is wasted. By adopting the technical scheme, when the addition amount of the modified polyether silicone oil and the amino-terminated trimethylolpropane tripropylene glycol ether is in the above range, the softness can be improved, and the hydrophilicity of the non-woven fabric can be improved.
As preferable: the reaction temperature is 70-90 ℃.
By adopting the technical scheme, the reaction temperature is lower, the ring-opening reaction is difficult to occur in the reaction process, the viscosity of the compound is lower, the temperature is properly increased, the ring-opening reaction is facilitated, the preparation of the compound is facilitated, and the water permeability of the non-woven fabric is improved.
As preferable: the modified polyether silicone oil is prepared by the following method: and (3) placing the hydrogen-terminated silicone oil and the allyl glycidyl ether into isopropanol, uniformly mixing, heating, adding a catalyst, reacting, heating again, stopping the reaction after a period of time, and distilling under reduced pressure to obtain the modified polyether silicone oil.
Further, the modified polyether silicone oil is prepared by the following method: putting hydrogen-terminated silicone oil and allyl glycidyl ether into isopropanol, uniformly mixing, heating to 70-90 ℃, adding a catalyst, reacting for 5-10min, heating to 110-130 ℃ again, stopping reacting after 3-5h, and distilling under reduced pressure to obtain modified polyether silicone oil;
wherein the addition amount of the isopropanol is 30-40wt% of the hydrogen terminated silicone oil.
By adopting the technical scheme, the preparation method is used for preparing the modified polyether silicone oil, so that the hydrosilylation reaction is convenient to carry out, the preparation of the modified polyether silicone oil is convenient, and the hydrophilicity of the non-woven fabric is improved.
As preferable: the weight ratio of the hydrogen-terminated silicone oil to the allyl glycidyl ether is 1: (2-2.4).
The addition amount of allyl glycidyl ether is too small, the hydrosilylation reaction cannot be carried out better, the hydrogen-terminated silicone oil is wasted, and the prepared modified polyether silicone oil has poor hydrophilicity; the allyl glycidyl ether is excessively added, and when the reaction reaches saturation, the allyl glycidyl ether is wasted. Through adopting above-mentioned technical scheme, when the addition of hydrogen-terminated silicone oil and allyl glycidyl ether is in above-mentioned within range, can be better prepare modified polyether silicone oil, be convenient for improve the water permeability of non-woven fabrics.
As preferable: the anionic surfactant is one or more of sodium laureth sulfate, sodium dodecyl benzene sulfonate and sodium lauroyl sarcosinate.
More preferably: the anionic surfactant is a mixture of sodium laureth sulfate, sodium dodecyl benzene sulfonate and sodium lauroyl sarcosinate, and the weight ratio of the sodium laureth sulfate to the sodium dodecyl benzene sulfonate to the sodium lauroyl sarcosinate is 1:1:1.
By adopting the technical scheme, sodium laureth sulfate, sodium dodecyl benzene sulfonate and sodium lauroyl sarcosinate are used as anionic surfactants, and the anionic surfactants have hydrophilic groups, so that the contact angle of the non-woven fabric can be reduced, the hydrophilicity of the non-woven fabric is obviously improved, and the water permeability of the non-woven fabric can be improved through the synergistic effect of the three.
As preferable: the thickener is one or more of polyethylene glycol distearate, methylcellulose and casein.
By adopting the technical scheme, the thickening agent is limited, so that the consistency of the hydrophilic agent can be improved, and the preparation of the hydrophilic agent is facilitated.
In a second aspect, the present application provides a process for preparing a water-permeable nonwoven fabric, which adopts the following technical scheme:
a preparation process of a water-permeable non-woven fabric comprises the following steps:
s1: melt-extruding polypropylene, filtering, pumping oil, drawing wire, cooling, molding, compacting, compressing and shaping to obtain a non-woven fabric primary product; s2: placing the anionic surfactant, the compound, the polyvinyl alcohol, the glycerol and the thickener into water, and uniformly mixing to obtain a hydrophilic agent;
s3: uniformly coating the hydrophilic agent on the non-woven fabric primary product, and drying to obtain the water-permeable non-woven fabric.
Further, a preparation process of the water-permeable non-woven fabric comprises the following steps:
s1: melt-extruding polypropylene at 230-240 ℃, filtering, pumping oil, drawing wire, cooling with a blower with flow of 550-600 ℃, molding and compacting at 135-145 ℃, compressing and shaping at 155-160 ℃ and 4-5kg pressure to obtain a non-woven fabric primary product;
s2: placing the anionic surfactant, the compound, the polyvinyl alcohol, the glycerol and the thickener into water, and uniformly mixing to obtain a hydrophilic agent;
s3: uniformly coating the hydrophilic agent on the non-woven fabric primary product, and drying to obtain the water-permeable non-woven fabric.
As preferable: the coating amount of the hydrophilic agent in the step S3 is 20-40wt% of the polypropylene.
Through adopting above-mentioned technical scheme, utilize above-mentioned preparation method to prepare the non-woven fabrics that permeates water, firstly utilize polypropylene to prepare the non-woven fabrics primary product, then prepare hydrophilic agent, evenly coat hydrophilic agent on the non-woven fabrics at last and form the non-woven fabrics that permeates water to limited the coating quantity of hydrophilic agent, be convenient for better improvement non-woven fabrics's water permeability.
In summary, the present application includes at least one of the following beneficial technical effects:
1. because the compound formed by compounding the amino-terminated trimethylolpropane tripropylene glycol ether and the modified polyether silicone oil is adopted in the application, the modified polyether silicone oil has polyether segments and has stronger hydrophilicity, the moisture absorption function of the non-woven fabric can be improved, and the water permeability of the non-woven fabric can be improved when the modified polyether silicone oil is applied to the non-woven fabric; however, the modified polyether silicone oil is added into the non-woven fabric, so that the softness of the non-woven fabric can be reduced, after the amino-terminated trimethylolpropane tripropylene glycol ether and the modified polyether silicone oil are compounded, the softness of the modified polyether silicone oil can be improved, and the hydrophilicity is further improved along with the increase of ether segments and hydroxyl groups, so that the water permeability of the non-woven fabric is further enhanced, the water contact angle can be reduced to 50.2 degrees, the water retention rate reaches 85.6%, and the softness reaches 23.5mN.
2. In the present application, sodium laureth sulfate, sodium dodecylbenzenesulfonate and sodium lauroyl sarcosinate are preferable as anionic surfactants, and the water permeability of the nonwoven fabric can be further improved by the synergistic effect of the three.
Detailed Description
The present application is described in further detail below in conjunction with the detailed description.
Raw materials
Polyvinyl alcohol having a molecular weight of 44, melting point>300 ℃, boiling point-14.5 ℃ and density 1.080g/cm 3 Flash point 79 ℃; amino-terminated trimethylolpropane tripropylene glycol ether with molecular weight of 5000 and density of 0.948g/cm 3 Boiling point of>Viscosity 10mPa.s at 200deg.C, 25deg.C and flash point 121 ℃; hydrogen terminated silicone oil has a molecular weight of 5000 and a viscosity of 10000 Pa.s at 25 ℃; allyl glycidyl ether having a molecular weight of 114 and a density of 0.962g/cm 3 Boiling point 154 ℃, flash point 48 ℃; the catalyst is a Kanster catalyst and has a molecular weight 937; the thickening agent is polyethylene glycol distearate, and the polyethylene glycol distearate is PEG6000DS; polypropylene molecular weight 8000, density 0.91g/cm 3 Melting point 165 ℃.
Preparation example
Preparation example 1
A modified polyether silicone oil, which is prepared by the following method:
and (3) putting 2kg of hydrogen-terminated silicone oil and 4kg of allyl glycidyl ether into 0.7kg of isopropanol, uniformly mixing, heating to 80 ℃, adding a catalyst, reacting for 7min, heating to 120 ℃ again, stopping the reaction after 4h, and distilling under reduced pressure to obtain the modified polyether silicone oil.
Preparation example 2
A modified polyether silicone oil differing from preparation example 1 in the amount of allyl glycidyl ether added, and preparation example 2 in which the amount of allyl glycidyl ether added was 4.4kg.
Preparation example 3
A modified polyether silicone oil differing from preparation example 1 in the amount of allyl glycidyl ether added, and preparation example 3 in which the amount of allyl glycidyl ether added was 4.8kg.
Preparation example 4
A composite prepared by the following method:
2kg of modified polyether silicone oil prepared by adopting preparation example 1 and 1.6kg of amino-terminated trimethylolpropane tripropylene glycol ether are put into 0.7kg of isopropanol, uniformly mixed, heated to 70 ℃, reacted for 6 hours and distilled under reduced pressure to obtain a compound.
Preparation example 5
A composite was different from that of preparation example 4 in the amount of the amino-terminated trimethylolpropane tripropylene glycol ether added, and in preparation example 5, the amount of the amino-terminated trimethylolpropane tripropylene glycol ether added was 2.4kg.
Preparation example 6
A composite was distinguished from preparation example 4 in that the amount of the amino-terminated trimethylolpropane tripropylene glycol ether added was different, and the amount of the amino-terminated trimethylolpropane tripropylene glycol ether added in preparation example 6 was 3.2kg.
Preparation example 7
A composite was distinguished from preparation example 4 in that the amount of the amino-terminated trimethylolpropane tripropylene glycol ether added was different, and the amount of the amino-terminated trimethylolpropane tripropylene glycol ether added in preparation example 6 was 0.5kg.
Preparation example 8
A composite was distinguished from preparation example 4 in that the amount of the amino-terminated trimethylolpropane tripropylene glycol ether added was different, and the amount of the amino-terminated trimethylolpropane tripropylene glycol ether added in preparation example 6 was 10kg.
Preparation example 9
A composite is different from preparation example 5 in that the modified polyether silicone oil in the composite is different in source, and the modified polyether silicone oil in preparation example 9 is prepared by adopting preparation example 2.
Preparation example 10
A composite is different from preparation example 5 in that the modified polyether silicone oil in the composite is different in source, and the modified polyether silicone oil in preparation example 10 is prepared by adopting preparation example 3.
PREPARATION EXAMPLE 11
A composite was distinguished from preparation example 7 in that the reaction temperature was 80℃in preparation example 11.
Preparation example 12
A composite was distinguished from preparation example 7 in that the reaction temperature was different, and the reaction temperature in preparation example 12 was 90 ℃.
Examples
Example 1
The raw material proportion of the hydrophilic agent in the water-permeable non-woven fabric is shown in table 1.
A preparation process of a water-permeable non-woven fabric comprises the following steps:
s1: melt-extruding 10kg of polypropylene at 235 ℃, filtering, pumping oil, drawing wire, cooling by a fan with 570 flow, molding and compacting at 140 ℃, compressing and shaping at 158 ℃ and 4.5kg of pressure to obtain a non-woven fabric primary product;
s2: placing the anionic surfactant, the compound prepared by adopting the preparation example 4, polyvinyl alcohol, glycerol and a thickening agent into water, and uniformly mixing to obtain a hydrophilic agent;
s3: 3.5kg of hydrophilic agent is uniformly coated on the non-woven fabric primary product, and the non-woven fabric is dried to obtain the water permeable non-woven fabric.
Examples 2 to 5
A water-permeable nonwoven fabric is different from example 1 in that the raw material ratio of the hydrophilic agent is different, and the raw material ratio is shown in Table 1.
TABLE 1 amounts of raw materials (unit: kg) for hydrophilic agents of examples 1 to 5
Example 6
A water-permeable nonwoven fabric was distinguished from example 4 in that the source of the composite in the nonwoven fabric was different, and the composite in example 6 was prepared by using preparation example 5.
Example 7
A water-permeable nonwoven fabric was different from example 4 in that the source of the composite in the nonwoven fabric was different, and the composite in example 7 was prepared by using preparation example 6.
Example 8
A water-permeable nonwoven fabric was different from example 4 in that the source of the composite in the nonwoven fabric was different, and the composite in example 8 was prepared by using preparation example 7.
Example 9
A water-permeable nonwoven fabric was different from example 4 in that the source of the composite in the nonwoven fabric was different, and the composite in example 9 was prepared by using preparation example 8.
Example 10
A water-permeable nonwoven fabric was different from example 4 in that the source of the composite in the nonwoven fabric was different, and the composite in example 10 was prepared by using preparation example 9.
Example 11
A water-permeable nonwoven fabric was different from example 4 in that the source of the composite in the nonwoven fabric was different, and the composite in example 11 was prepared by using preparation example 10.
Example 12
A water-permeable nonwoven fabric was different from example 4 in that the source of the composite in the nonwoven fabric was different, and the composite in example 12 was prepared by using preparation example 11.
Example 13
A water-permeable nonwoven fabric was different from example 4 in that the source of the composite in the nonwoven fabric was different, and the composite in example 13 was prepared by using preparation example 12.
Comparative example
Comparative example 1
A water-permeable nonwoven fabric differing from example 1 in that no complex is added to the hydrophilic agent.
Comparative example 2
A water-permeable nonwoven fabric is distinguished from example 1 in that the complex in the hydrophilic agent is replaced with a modified polyether silicone oil in equal amount.
Comparative example 3
A water permeable nonwoven fabric is distinguished from example 1 in that the complex in the hydrophilic agent is replaced with an equivalent amount of amino-terminated trimethylolpropane tripropylene glycol ether.
Performance test
The following performance tests were performed on the nonwoven fabrics in examples 1 to 13 and comparative examples 1 to 3:
water contact angle: the water contact angle of the nonwoven fabric was measured by a contact angle tester, and the measurement results are shown in table 2.
Water retention rate: the nonwoven fabrics of the samples of the same thickness were cut into 10cm X10 cm squares (weight per unit area: 20 g/m) 2 ) Soaking in 10L distilled water for 30min, taking out the non-woven fabrics, and measuring water retention rate to obtain the detection results shown in Table 2.
Softness: the softness of the nonwoven fabric was measured according to GB/T8942-2016 measurement of softness of paper, and the measurement results are shown in Table 2.
TABLE 2 detection results
As can be seen from Table 2, the water-permeable nonwoven fabric of the present application can maintain a good softness of the nonwoven fabric and can also improve the water permeability of the nonwoven fabric by the synergistic effect between the raw materials, wherein the water contact angle is 50.2 to 64.6 degrees, the water retention rate is 63.3 to 85.6%, and the softness is 23.2 to 23.5mN.
As can be seen from the combination of the example 1 and the comparative examples 1 to 3, the water contact angle of the non-woven fabric in the example 1 is 61.5 degrees, the water retention rate is 66.5 percent, and the softness is 23.2mN, which is superior to the comparative examples 1 to 3, and the fact that the compound compounded by adopting the modified polyether silicone oil and the amino-terminated trimethylolpropane tripropylene glycol ether is added into the raw material of the non-woven fabric hydrophilic agent is more suitable, so that the non-woven fabric can keep good softness, the water contact angle can be reduced, the water retention rate can be improved, and the water permeability of the non-woven fabric can be improved.
As can be seen from examples 1 to 5, the water contact angle of the nonwoven fabric in example 4 is 54.2 degrees, the water retention rate is 75.6 percent, and the softness is 23.3mN, which is superior to other examples, and shows that the compound in example 4 is more suitable to be added, so that the nonwoven fabric can maintain good softness, reduce the water contact angle and improve the water retention rate, thereby improving the water permeability of the nonwoven fabric.
As can be seen from the combination of examples 4 and examples 6 to 9, the water contact angle of the nonwoven fabric in example 6 is 53.4 degrees, the water retention rate is 79.9 percent, and the softness is 23.5mN, which is superior to other examples, and shows that the addition amount of the amino-terminated trimethylolpropane tripropylene glycol ether in the compound is more suitable by adopting the preparation example 5, so that the nonwoven fabric can keep good softness, and the water permeability of the nonwoven fabric is improved.
As can be seen from the combination of the examples 6 and 10-11, the water contact angle of the non-woven fabric in the example 10 is 51.7 degrees, the water retention rate is 82.1 percent, and the softness is 23.4mN, which is superior to other examples, and the modified polyether silicone oil in the compound is more suitable to be prepared by adopting the preparation example 2, so that the non-woven fabric can keep good softness, and the water permeability of the non-woven fabric is improved.
As can be seen from the combination of examples 10 and examples 12 to 13, the nonwoven fabric in example 12 has a water contact angle of 50.2 degrees, a water retention rate of 85.6 percent and a softness of 23.5mN, which is superior to other examples, and shows that the reaction temperature of the composite is more suitable by adopting 80 ℃ in preparation example 11, so that not only can the nonwoven fabric keep good softness, but also the water permeability of the nonwoven fabric is improved.
The foregoing embodiments are all preferred examples of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. A water permeable nonwoven fabric, characterized in that: the hydrophilic agent is water-permeable non-woven fabric formed by uniformly coating the hydrophilic agent on polypropylene fibers, and comprises the following raw materials in parts by weight: 3-6 parts of anionic surfactant, 15-25 parts of compound, 8-16 parts of polyvinyl alcohol, 10-20 parts of glycerol, 1-3 parts of thickener and 80-100 parts of water; wherein the compound is formed by compounding amino-terminated trimethylolpropane tripropylene glycol ether and modified polyether silicone oil.
2. The water permeable nonwoven according to claim 1, wherein: the compound is prepared by the following method: and (3) putting the modified polyether silicone oil and the amino-terminated trimethylolpropane tripropylene glycol ether into isopropanol, uniformly mixing, heating, raising the temperature, reacting, and distilling under reduced pressure to obtain the compound.
3. The water permeable nonwoven according to claim 2, wherein: the weight ratio of the modified polyether silicone oil to the amino-terminated trimethylolpropane tripropylene glycol ether is 1: (0.8-1.6).
4. The water permeable nonwoven according to claim 2, wherein: the reaction temperature is 70-90 ℃.
5. The water permeable nonwoven according to claim 2, wherein: the modified polyether silicone oil is prepared by the following method: and (3) placing the hydrogen-terminated silicone oil and the allyl glycidyl ether into isopropanol, uniformly mixing, heating, adding a catalyst, reacting, heating again, stopping the reaction after a period of time, and distilling under reduced pressure to obtain the modified polyether silicone oil.
6. The water-permeable nonwoven fabric according to claim 5, wherein: the weight ratio of the hydrogen-terminated silicone oil to the allyl glycidyl ether is 1: (2-2.4).
7. The water permeable nonwoven according to claim 1, wherein: the anionic surfactant is one or more of sodium laureth sulfate, sodium dodecyl benzene sulfonate and sodium lauroyl sarcosinate.
8. The water permeable nonwoven according to claim 1, wherein: the thickener is one or more of polyethylene glycol distearate, methylcellulose and casein.
9. A process for the preparation of a water-permeable nonwoven fabric according to any one of claims 1 to 8, comprising the steps of:
s1: melt-extruding polypropylene, filtering, pumping oil, drawing wire, cooling, molding, compacting, compressing and shaping to obtain a non-woven fabric primary product;
s2: placing the anionic surfactant, the compound, the polyvinyl alcohol, the glycerol and the thickener into water, and uniformly mixing to obtain a hydrophilic agent;
s3: uniformly coating the hydrophilic agent on the non-woven fabric primary product, and drying to obtain the water-permeable non-woven fabric.
10. The process for preparing a water-permeable nonwoven fabric according to claim 9, wherein: the coating amount of the hydrophilic agent in the step S3 is 20-40wt% of the polypropylene.
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