CN111021048A - Preparation method of uvioresistant polypropylene non-woven fabric - Google Patents
Preparation method of uvioresistant polypropylene non-woven fabric Download PDFInfo
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- CN111021048A CN111021048A CN201911373033.XA CN201911373033A CN111021048A CN 111021048 A CN111021048 A CN 111021048A CN 201911373033 A CN201911373033 A CN 201911373033A CN 111021048 A CN111021048 A CN 111021048A
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- woven fabric
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- coral reef
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 131
- -1 polypropylene Polymers 0.000 title claims abstract description 101
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 99
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 99
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 235000014653 Carica parviflora Nutrition 0.000 claims abstract description 109
- 241000243321 Cnidaria Species 0.000 claims abstract description 109
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 104
- 239000000843 powder Substances 0.000 claims abstract description 72
- 238000001035 drying Methods 0.000 claims abstract description 48
- 239000007822 coupling agent Substances 0.000 claims abstract description 43
- 239000006185 dispersion Substances 0.000 claims abstract description 37
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 claims abstract description 28
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 24
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims abstract description 21
- UWCPYKQBIPYOLX-UHFFFAOYSA-N benzene-1,3,5-tricarbonyl chloride Chemical compound ClC(=O)C1=CC(C(Cl)=O)=CC(C(Cl)=O)=C1 UWCPYKQBIPYOLX-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 239000000725 suspension Substances 0.000 claims abstract description 15
- 230000004048 modification Effects 0.000 claims abstract description 14
- 238000012986 modification Methods 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000001179 sorption measurement Methods 0.000 claims abstract description 10
- 238000002791 soaking Methods 0.000 claims abstract description 8
- 125000002252 acyl group Chemical group 0.000 claims abstract description 7
- 238000005660 chlorination reaction Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 52
- 238000003756 stirring Methods 0.000 claims description 37
- 239000008367 deionised water Substances 0.000 claims description 32
- 229910021641 deionized water Inorganic materials 0.000 claims description 32
- 229920002873 Polyethylenimine Polymers 0.000 claims description 30
- 230000010355 oscillation Effects 0.000 claims description 20
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000004593 Epoxy Substances 0.000 claims description 14
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 9
- 239000004408 titanium dioxide Substances 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 8
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 2
- 238000000643 oven drying Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 abstract description 45
- 230000006750 UV protection Effects 0.000 abstract description 20
- 239000007864 aqueous solution Substances 0.000 abstract description 14
- 238000005406 washing Methods 0.000 abstract description 6
- 239000000835 fiber Substances 0.000 description 30
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 14
- 239000004744 fabric Substances 0.000 description 12
- 239000000203 mixture Substances 0.000 description 12
- 239000002245 particle Substances 0.000 description 10
- 239000004952 Polyamide Substances 0.000 description 8
- 229920002647 polyamide Polymers 0.000 description 8
- 239000008187 granular material Substances 0.000 description 7
- 239000000178 monomer Substances 0.000 description 6
- 238000002834 transmittance Methods 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 230000003301 hydrolyzing effect Effects 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N hexane Substances CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 150000001263 acyl chlorides Chemical group 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000007539 photo-oxidation reaction Methods 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000012695 Interfacial polymerization Methods 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 238000005576 amination reaction Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 239000004750 melt-blown nonwoven Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000005702 oxyalkylene group Chemical group 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
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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
- D06M11/36—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 oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic Table; Titanates; Zirconates; Stannates; Plumbates
-
- 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
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
-
- 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
- D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
-
- 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
-
- 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
- D06M2200/25—Resistance to light or sun, i.e. protection of the textile itself as well as UV shielding materials or treatment compositions therefor; Anti-yellowing treatments
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to the technical field of non-woven fabrics, and discloses a preparation method of an anti-ultraviolet polypropylene non-woven fabric. The method comprises the following steps: 1) placing coral reef powder in a muffle furnace for roasting, ultrasonically vibrating, cleaning, drying, and adding an aminosilane coupling agent solution for modification treatment; 2) soaking a polypropylene non-woven fabric in a piperazine aqueous solution, taking out the non-woven fabric, placing the non-woven fabric in a trimesoyl chloride solution for reaction at room temperature, taking out the non-woven fabric, placing the non-woven fabric in an oven for heat treatment, placing the non-woven fabric after heat treatment in an N, N-dimethylformamide solution, and adding thionyl chloride for acyl chlorination reaction; 3) immersing the polypropylene non-woven fabric into the porous coral reef powder suspension to obtain a non-woven fabric with the surface loaded with the porous coral reef; 4) arranging the non-woven fabric with the porous coral reef loaded on the surface in the step 3) in the nano titanium dioxide dispersion liquid, standing for adsorption, and drying to obtain the artificial coral reef. The polypropylene non-woven fabric prepared by the invention has good ultraviolet protection performance and washing resistance.
Description
Technical Field
The invention relates to the technical field of non-woven fabrics, in particular to a preparation method of an anti-ultraviolet polypropylene non-woven fabric.
Background
The polypropylene fiber is a synthetic fiber prepared by melt spinning of isotactic polypropylene serving as a raw material, is called polypropylene in China, and is one of five synthetic fibers. Polypropylene fibers can be classified into long fibers, short fibers, spunbond nonwoven fabrics, meltblown nonwoven fabrics, and the like. The long fiber is mostly used in the clothing and knitting industry because of its good luster and drapability, and the short fiber is mostly made by short spinning process, and can be made into cotton-acrylic fine cloth, bed sheet and other products after being blended with cotton. Because of some outstanding characteristics of the polypropylene fiber, such as light weight, the density of the polypropylene fiber is 0.90-0.92g/cm3Is prepared fromThe lightest fiber of all chemical fiber products is very suitable for being used as wadding of winter clothes or fabrics of ski wear and climbing wear; the chemical stability is good, and the polypropylene fiber has high regular isotactic structure and high crystallinity, so that the polypropylene fiber is insoluble in common solvents at normal temperature; the electric insulation and the heat preservation performance are good, and due to the zero absorption characteristic, the insulation can still be kept in a moist environment. However, polypropylene has the defect that a large number of methyl side chains exist in a polypropylene molecular chain, and hydrogen bonds on tertiary carbon undergo oxidation reaction under ultraviolet irradiation to age, so that the service life of the polypropylene is influenced.
Chinese patent publication No. CN108265392 discloses a method for preparing polypropylene non-woven fabric with enhanced high photo-oxidation stability, which comprises mixing anti-ultraviolet composite additive with polypropylene, preparing anti-ultraviolet master batch, extruding, spinning, and stretching air flow to obtain the polypropylene non-woven fabric with enhanced high photo-oxidation stability, wherein hindered phenol light stabilizer and nano-oxidation are used compositely to obtain polypropylene non-woven fabric with anti-ultraviolet effect, but because most of zinc oxide nano-particles of ultraviolet screening agent are dispersed in polypropylene fiber, the surface of zinc oxide nano-particles of ultraviolet resistance is less, the anti-ultraviolet performance is limited, and more nano-zinc oxide raw material is wasted. Chinese patent publication No. CN105625032 discloses an ultraviolet-proof polyester-cotton fabric and a preparation method thereof, wherein fibers such as polyester fibers, long stapled cotton fibers and polyamide fibers are blended and woven, and then the fabric obtained by blending and weaving is placed in finishing liquid containing ultraviolet shielding agent nano titanium dioxide for dipping treatment to obtain the polyester-cotton fabric with the ultraviolet-proof effect. Chinese patent publication No. CN103820939 discloses an ultraviolet-resistant pile fabric and a method for preparing the same, wherein cloth is padded in finishing liquid containing ultraviolet screening agent nano titanium dioxide during dyeing or printing to obtain the ultraviolet-resistant pile fabric, but during use, the nano titanium dioxide has strong photocatalytic property at the same time, so that photocatalytic degradation of fiber or dye molecules is accelerated, thereby causing strength reduction of the pile fabric and dropping of pigment on the surface of the fabric.
Disclosure of Invention
The invention provides a preparation method of an anti-ultraviolet polypropylene non-woven fabric in order to overcome the problems of the prior art. The polypropylene non-woven fabric prepared by the invention has good ultraviolet protection performance and washing resistance.
In order to achieve the purpose, the invention adopts the following technical scheme: a preparation method of an uvioresistant polypropylene non-woven fabric comprises the following steps:
1) placing the coral reef powder in a muffle furnace for roasting, then adding the roasted coral reef powder into deionized water for ultrasonic oscillation cleaning and drying to obtain porous coral reef powder, and adding the porous coral reef powder into an aminosilane coupling agent solution for modification treatment;
2) soaking a polypropylene non-woven fabric in a piperazine water solution for 10-20min, taking out, placing the non-woven fabric in a trimesoyl chloride solution for reaction for 5-10min at room temperature, taking out, placing the non-woven fabric in a drying oven for heat treatment for 15-30min, placing the non-woven fabric after heat treatment in an N, N-dimethylformamide solution, heating the non-woven fabric to 50-65 ℃ in a water bath, adding thionyl chloride for acyl chlorination reaction for 4-8h, taking out and drying;
3) adding the modified porous coral reef powder obtained in the step 1) into deionized water, stirring and dispersing uniformly to obtain a suspension, immersing the polypropylene non-woven fabric dried in the step 2) into the suspension, heating in a water bath to 40-50 ℃, carrying out heat preservation reaction for 1-3h, taking out, and then placing in an oven for drying to obtain a non-woven fabric with the porous coral reef on the surface;
4) adding nano titanium dioxide into deionized water, performing ultrasonic oscillation dispersion for 20-50min to obtain nano titanium dioxide dispersion liquid, arranging the non-woven fabric with the porous coral reef loaded on the surface in the step 3) in the nano titanium dioxide dispersion liquid, standing for adsorption for 2-5h, taking out, and placing in an oven for drying treatment to obtain the product.
Preferably, the roasting temperature of the coral reef powder in the step 1) is 200-.
Preferably, the mass ratio of the porous coral reef powder to the aminosilane coupling agent in the step 1) is 1: 0.2-0.5.
Preferably, the addition amount of the thionyl chloride in the step 2) is 3 to 6% by mass of the polypropylene nonwoven fabric.
Preferably, the mass ratio of the porous coral reef powder to the polypropylene non-woven fabric in the step 3) is 1: 5-10.
Preferably, the mass-to-volume ratio of the nano titanium dioxide to the deionized water in the step 4) is 1-3g/80 mL.
Preferably, the nano titanium dioxide is subjected to modification treatment in the step 4), and the modification treatment method comprises the following steps: adding nano titanium dioxide into an ethanol water solution for ultrasonic oscillation dispersion, then adding an epoxy silane coupling agent, stirring for reaction for 30-50min, drying after separation to obtain coupling agent modified nano titanium dioxide, placing the coupling agent modified nano titanium dioxide into a polyethyleneimine solution, adjusting the pH of the system to 8.5-9.0, heating to 50-60 ℃, stirring for reaction for 1-3h, separating, and then placing in an oven for drying to obtain the nano titanium dioxide modified nano titanium dioxide.
Preferably, the mass ratio of the nano titanium dioxide to the epoxy silane coupling agent is 1: 1-2.
Preferably, the mass ratio of the coupling agent modified nano titanium dioxide to the polyethyleneimine is 1: 0.2-0.6.
The invention aims to solve the technical problems related to the technical background, and provides a solution method which comprises the steps of firstly loading porous coral reef powder on the surface of polypropylene non-woven fabric fibers, then soaking the polypropylene non-woven fabric fibers in finishing liquid containing ultraviolet screening agent nano titanium dioxide, utilizing the adsorption performance of the porous coral reef to adsorb and gather nano oxyalkylene in the finishing liquid on the hollow structure or the surface of the coral reef, and obviously improving the adhesion of the nano titanium dioxide on the surface of the polypropylene non-woven fabric under the adsorption action of the porous coral reef, thereby improving the ultraviolet protection performance of the polypropylene non-woven fabric. On the other hand, the invention better avoids the photocatalytic degradation effect of nano titanium dioxide with stronger photocatalytic activity on the polypropylene non-woven fabric, and as the nano alkylene oxide in the finishing liquid is adsorbed on the hole structure or the surface of the coral reef, which is equivalent to the coral reef serving as a carrier of the nano titanium dioxide, the nano titanium dioxide is prevented from contacting with the polypropylene non-woven fabric, thereby preventing the photocatalytic degradation effect of the nano titanium dioxide on the polypropylene non-woven fabric and prolonging the service life of the polypropylene non-woven fabric.
The specific preparation process of the ultraviolet-resistant non-woven fabric comprises the following steps: firstly, modification treatment is carried out on coral reef powder, and coral reef particles are of a porous structure and have better adsorption performance; the piperazine monomer and the trimesoyl chloride monomer are subjected to a crosslinking reaction on the surface of the polypropylene non-woven fabric fiber through an interfacial polymerization method, so that a polyurethane polymer layer is coated on the surface of the polypropylene fiber, the polyurethane polymer layer is firmly combined with the polypropylene fiber, and the piperazine monomer and the trimesoyl chloride monomer are not easy to separate. The polyurethane polymer layer coated on the surface of the polypropylene fiber plays a role in blocking and isolating ultraviolet rays and reduces the transmittance of the ultraviolet rays; in addition, piperazine monomer and trimesoyl chloride monomer cross-linking reaction in-process, some acyl chloride groups of trimesoyl chloride are hydrolyzed into the carboxyl, thereby contain the carboxyl in making polyurethane polymer layer, then the carboxyl reacts with thionyl chloride, become the acyl chloride group that has higher reactivity again, the acyl chloride group can react with the amino on coral reef powder particle surface, thereby fix the surface at the polypropylene non-woven fabrics with coral reef powder particle through the mode of chemical bonding, the mode of chemical bonding compares that the physics is adhered to and combines more firmly, the coral reef powder hardly drops from the polypropylene non-woven fabrics surface. And finally, the non-woven fabric with the porous coral reef loaded on the surface is soaked in the nano titanium dioxide finishing liquid, the nano titanium dioxide is adsorbed on the surface of the porous coral reef or in a cavity structure by utilizing the excellent adsorbability of the porous coral reef, the porous coral reef powder particles are equivalent to the effect of serving as a bridge, and the nano titanium dioxide is connected on the surface of the polypropylene non-woven fabric, so that the polypropylene non-woven fabric has ultraviolet protection performance. In conclusion, the polypropylene non-woven fabric has the double-layer protection effect of ultraviolet rays, after the ultraviolet rays irradiate on the surface of the polypropylene non-woven fabric, part of the ultraviolet rays are reflected off through the nano titanium dioxide, then the polyamide layer coated on the fiber surface of the polypropylene non-woven fabric absorbs and blocks part of the ultraviolet rays, and the ultraviolet rays transmittance of the polypropylene non-woven fabric is remarkably reduced through the combination of the nano titanium dioxide and the polyamide layer, so that the polypropylene non-woven fabric has the outstanding ultraviolet ray protection performance.
In the experimental process, the porous coral reef powder can adsorb a large amount of nano titanium dioxide to the surface and a cavity structure of the porous coral reef powder in finishing liquid, but the nano titanium dioxide on the surface of the porous coral reef is not firmly combined in the drying treatment process, and the nano titanium dioxide on the surface of the porous coral reef is partially separated after the drying treatment, so that the content of the nano titanium dioxide on the surface of the porous coral reef is kept, the nano titanium dioxide is modified, an epoxy silane coupling agent is grafted to the surface of the inorganic nano titanium dioxide, an epoxy group is loaded on the surface of the nano titanium dioxide, the epoxy group and amino on polyethyleneimine are subjected to ring-opening reaction, the polyethyleneimine is grafted to the surface of the nano titanium dioxide, the polyethyleneimine macromolecules have more amino groups, and hydrogen bond acting force is formed between the polyethyleneimine and the amino loaded on the surfaces of the coral reef powder particles, so that the binding, nanometer titanium dioxide is difficult for breaking away from coral reef powder granule among the non-woven fabrics drying process to keep coral reef powder granule surface nanometer titanium dioxide's content, further improve polypropylene non-woven fabrics ultraviolet protection effect.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples. In the invention, the adopted raw materials, equipment and the like can be purchased from the market or are commonly used in the field if not specified; the methods in the examples are conventional in the art unless otherwise specified.
The polypropylene non-woven fabric used in the specific embodiment is produced by Hainan Xinlong non-woven fabrics Co., Ltd, and the polypropylene non-woven fabric is 25g/m2Cutting into 5cm × 5cm size; the coral reef powder is micron-sized particles with the particle size of 200-. The nano titanium dioxide is produced by Hangzhou Jiufen new material, namely rutile type nano titanium dioxide CY-T25F, the particle size is 25nm, and the specific surface area is 100-200 nm; the used polyethyleneimine is purchased from Mecline, and has a model number of E808880, M.W.10000 and a purity of 99 percent; the epoxy silane coupling agent is KH560, and is named as gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane; the aminosilane used was coupled with the model KH550, named gamma-aminopropyltriethoxysilane.
Example 1
The modification treatment method of the nano titanium dioxide comprises the following steps:
adding nano titanium dioxide into 70% ethanol aqueous solution according to the mass-volume ratio of 1g/80mL, performing ultrasonic oscillation dispersion for 2 hours under the power of 100W, then adding an epoxy silane coupling agent, wherein the mass ratio of the nano titanium dioxide to the epoxy silane coupling agent is 1:2, adjusting the pH value of the system to 5, stirring for reaction for 30 minutes, separating, and then placing in an oven to dry at 50 ℃ to obtain coupling agent modified nano titanium dioxide; adding polyethyleneimine into deionized water, stirring and dissolving to prepare a polyethyleneimine solution with the concentration of 3 wt%, adding coupling agent modified nano titanium dioxide into the polyethyleneimine solution, wherein the mass ratio of the coupling agent modified nano titanium dioxide to the polyethyleneimine is 1:0.5, adjusting the pH of the system to 9, heating in a water bath to 55 ℃, stirring and reacting for 2h, separating, and drying in an oven at 60 ℃ for 2h to obtain the polyethyleneimine-modified nano titanium dioxide polyethyleneimine-modified polyethyleneimine-titanium dioxide polyethyleneimine-titanium dioxide composite material.
The preparation method of the uvioresistant polypropylene non-woven fabric comprises the following steps:
1) placing the coral reef powder in a muffle furnace to be roasted for 2 hours at the temperature of 200 ℃, then adding the coral reef powder into deionized water to carry out ultrasonic oscillation cleaning, and drying the coral reef powder at the temperature of 60 ℃ after filtering and separating to obtain porous coral reef powder; adding an aminosilane coupling agent into an ethanol aqueous solution with the mass concentration of 70% according to the mass-volume ratio of 1g/80mL, adjusting the pH value of the system to 5, stirring and hydrolyzing at 55 ℃ for 30min to obtain an aminosilane coupling agent solution, adding porous coral reef powder into the aminosilane coupling agent solution, wherein the mass ratio of the porous coral reef powder to the aminosilane coupling agent is 1:0.4, stirring and reacting for 1h, and drying at 50 ℃ for 2h after separation to obtain modified porous coral reef powder;
2) adding piperazine into deionized water, stirring and dissolving to prepare a piperazine solution with the concentration of 5 wt%, adding trimesoyl chloride into N-hexane to prepare a trimesoyl chloride solution with the concentration of 1 wt%, soaking a polypropylene non-woven fabric in the piperazine aqueous solution for 15min, taking out, placing in the trimesoyl chloride solution, reacting at room temperature for 8min, taking out, placing in an oven, performing heat treatment for 25min, placing the heat-treated non-woven fabric in an N, N-dimethylformamide solution according to the bath ratio of 1:60, heating in a water bath to 65 ℃, adding thionyl chloride to perform acyl chlorination for 6h, wherein the addition of the thionyl chloride is 5% of the mass of the polypropylene non-woven fabric, taking out, and drying at 60 ℃;
3) adding the modified porous coral reef powder obtained in the step 1) into deionized water according to the mass-volume ratio of 1g/80mL, stirring and dispersing uniformly to obtain a suspension, immersing the dried polypropylene non-woven fabric obtained in the step 2) into the suspension, wherein the mass ratio of the porous coral reef powder to the polypropylene non-woven fabric is 1:6, heating the mixture in a water bath to 50 ℃, carrying out heat preservation reaction for 2 hours, taking out the mixture, and drying the mixture in an oven at 60 ℃ to obtain the non-woven fabric with the porous coral reef on the surface;
4) adding the modified nano titanium dioxide into deionized water according to the mass-volume ratio of 2g/80mL, performing ultrasonic oscillation dispersion for 20min under the power of 100W to obtain nano titanium dioxide dispersion liquid, placing the non-woven fabric with the porous coral reef loaded on the surface in the step 3) into the nano titanium dioxide dispersion liquid according to the bath ratio of 1:50, standing for adsorption for 4h, taking out, and placing in an oven for drying treatment for 2h at the temperature of 60 ℃ to obtain the nano titanium dioxide dispersion liquid.
Example 2
The modification treatment method of the nano titanium dioxide comprises the following steps:
adding nano titanium dioxide into 70% ethanol aqueous solution according to the mass-volume ratio of 1g/80mL, performing ultrasonic oscillation dispersion for 2 hours under the power of 100W, then adding an epoxy silane coupling agent, wherein the mass ratio of the nano titanium dioxide to the epoxy silane coupling agent is 1:1, adjusting the pH value of the system to 5, stirring for reaction for 50 minutes, separating, and then placing in an oven to dry at 50 ℃ to obtain coupling agent modified nano titanium dioxide; adding polyethyleneimine into deionized water, stirring and dissolving to prepare a polyethyleneimine solution with the concentration of 3 wt%, adding coupling agent modified nano titanium dioxide into the polyethyleneimine solution, wherein the mass ratio of the coupling agent modified nano titanium dioxide to the polyethyleneimine is 1:0.3, adjusting the pH of the system to 8.5, heating in a water bath to 55 ℃, stirring and reacting for 2h, separating, and drying in an oven at 60 ℃ for 2h to obtain the polyethyleneimine-modified nano titanium dioxide polyethyleneimine-modified polyethyleneimine-titanium dioxide polyethyleneimine-modified polyethyleneimine-modified polyethyleneimine-polyethylene composite material.
The preparation method of the uvioresistant polypropylene non-woven fabric comprises the following steps:
1) placing the coral reef powder in a muffle furnace to be roasted for 1h at 300 ℃, then adding the roasted coral reef powder into deionized water to carry out ultrasonic oscillation cleaning, filtering and separating, and drying at 60 ℃ to obtain porous coral reef powder; adding an aminosilane coupling agent into an ethanol aqueous solution with the mass concentration of 70% according to the mass-volume ratio of 1g/80mL, adjusting the pH value of the system to 5, stirring and hydrolyzing at 55 ℃ for 30min to obtain an aminosilane coupling agent solution, adding porous coral reef powder into the aminosilane coupling agent solution, wherein the mass ratio of the porous coral reef powder to the aminosilane coupling agent is 1:0.3, stirring and reacting for 1h, and drying at 50 ℃ for 2h after separation to obtain modified porous coral reef powder;
2) adding piperazine into deionized water, stirring and dissolving to prepare a piperazine solution with the concentration of 5 wt%, adding trimesoyl chloride into N-hexane to prepare a trimesoyl chloride solution with the concentration of 1 wt%, soaking a polypropylene non-woven fabric in the piperazine aqueous solution for 15min, taking out, placing in the trimesoyl chloride solution, reacting at room temperature for 6min, taking out, placing in an oven, performing heat treatment for 20min, placing the heat-treated non-woven fabric in an N, N-dimethylformamide solution according to the bath ratio of 1:60, heating in a water bath to 50 ℃, adding thionyl chloride to perform acyl chlorination for 5h, wherein the addition amount of the thionyl chloride is 4% of the mass of the polypropylene non-woven fabric, taking out, and drying at 60 ℃;
3) adding the modified porous coral reef powder obtained in the step 1) into deionized water according to the mass-volume ratio of 1g/80mL, stirring and dispersing uniformly to obtain a suspension, immersing the dried polypropylene non-woven fabric obtained in the step 2) into the suspension, wherein the mass ratio of the porous coral reef powder to the polypropylene non-woven fabric is 1:8, heating the mixture in a water bath to 40 ℃, carrying out heat preservation reaction for 2 hours, taking out the mixture, and drying the mixture in an oven at 60 ℃ to obtain the non-woven fabric with the porous coral reef on the surface;
4) adding the modified nano titanium dioxide into deionized water according to the mass-volume ratio of 2g/80mL, performing ultrasonic oscillation dispersion for 50min under the power of 100W to obtain nano titanium dioxide dispersion liquid, placing the non-woven fabric with the porous coral reef loaded on the surface in the step 3) into the nano titanium dioxide dispersion liquid according to the bath ratio of 1:50, standing and adsorbing for 3h, taking out, and placing in an oven to perform drying treatment for 2h at the temperature of 60 ℃ to obtain the nano titanium dioxide dispersion liquid.
Example 3
The modification treatment method of the nano titanium dioxide comprises the following steps:
adding nano titanium dioxide into 70% ethanol aqueous solution according to the mass-volume ratio of 1g/80mL, performing ultrasonic oscillation dispersion for 2 hours under the power of 100W, then adding an epoxy silane coupling agent, wherein the mass ratio of the nano titanium dioxide to the epoxy silane coupling agent is 1:1.5, adjusting the pH value of the system to 5, stirring for reaction for 40 minutes, separating, and then placing in an oven to dry at 50 ℃ to obtain coupling agent modified nano titanium dioxide; adding polyethyleneimine into deionized water, stirring and dissolving to prepare a polyethyleneimine solution with the concentration of 3 wt%, adding coupling agent modified nano titanium dioxide into the polyethyleneimine solution, wherein the mass ratio of the coupling agent modified nano titanium dioxide to the polyethyleneimine is 1:0.6, adjusting the pH of the system to 8.5, heating in a water bath to 60 ℃, stirring and reacting for 3h, separating, and drying in an oven at 60 ℃ for 2h to obtain the polyethyleneimine modified nano titanium dioxide polyethyleneimine.
The preparation method of the uvioresistant polypropylene non-woven fabric comprises the following steps:
1) placing the coral reef powder in a muffle furnace to be roasted for 1.5h at 250 ℃, then adding the coral reef powder into deionized water to carry out ultrasonic vibration cleaning, and drying at 60 ℃ after filtering and separation to obtain porous coral reef powder; adding an aminosilane coupling agent into an ethanol aqueous solution with the mass concentration of 70% according to the mass-volume ratio of 1g/80mL, adjusting the pH value of the system to 5, stirring and hydrolyzing at 55 ℃ for 30min to obtain an aminosilane coupling agent solution, adding porous coral reef powder into the aminosilane coupling agent solution, wherein the mass ratio of the porous coral reef powder to the aminosilane coupling agent is 1:0.5, stirring and reacting for 1h, and drying at 50 ℃ for 2h after separation to obtain modified porous coral reef powder;
2) adding piperazine into deionized water, stirring and dissolving to prepare a piperazine solution with the concentration of 5 wt%, adding trimesoyl chloride into N-hexane to prepare a trimesoyl chloride solution with the concentration of 1 wt%, soaking a polypropylene non-woven fabric in the piperazine aqueous solution for 20min, taking out, placing in the trimesoyl chloride solution, reacting at room temperature for 10min, taking out, placing in an oven, performing heat treatment for 30min, placing the heat-treated non-woven fabric in an N, N-dimethylformamide solution according to the bath ratio of 1:60, heating in a water bath to 60 ℃, adding thionyl chloride to perform acyl chlorination for 8h, wherein the addition amount of the thionyl chloride is 6% of the mass of the polypropylene non-woven fabric, taking out, and drying at 60 ℃;
3) adding the modified porous coral reef powder obtained in the step 1) into deionized water according to the mass-volume ratio of 1g/80mL, stirring and dispersing uniformly to obtain a suspension, immersing the dried polypropylene non-woven fabric obtained in the step 2) into the suspension, wherein the mass ratio of the porous coral reef powder to the polypropylene non-woven fabric is 1:5, heating the mixture in a water bath to 45 ℃, carrying out heat preservation reaction for 3 hours, taking out the mixture, and drying the mixture in an oven at 60 ℃ to obtain the non-woven fabric with the porous coral reef on the surface;
4) adding the modified nano titanium dioxide into deionized water according to the mass-volume ratio of 3g/80mL, performing ultrasonic oscillation dispersion for 30min under the power of 100W to obtain nano titanium dioxide dispersion liquid, placing the non-woven fabric with the porous coral reef loaded on the surface in the step 3) into the nano titanium dioxide dispersion liquid according to the bath ratio of 1:50, standing and adsorbing for 5h, taking out, and placing in an oven to perform drying treatment for 2h at the temperature of 60 ℃ to obtain the nano titanium dioxide dispersion liquid.
Example 4
The modification treatment method of the nano titanium dioxide comprises the following steps:
adding nano titanium dioxide into 70% ethanol aqueous solution according to the mass-volume ratio of 1g/80mL, performing ultrasonic oscillation dispersion for 2 hours under the power of 100W, then adding an epoxy silane coupling agent, wherein the mass ratio of the nano titanium dioxide to the epoxy silane coupling agent is 1:1.5, adjusting the pH value of the system to 5, stirring for reaction for 40 minutes, separating, and then placing in an oven to dry at 50 ℃ to obtain coupling agent modified nano titanium dioxide; adding polyethyleneimine into deionized water, stirring and dissolving to prepare a polyethyleneimine solution with the concentration of 3 wt%, adding coupling agent modified nano titanium dioxide into the polyethyleneimine solution, wherein the mass ratio of the coupling agent modified nano titanium dioxide to the polyethyleneimine is 1:0.2, adjusting the pH of the system to 9, heating in a water bath to 50 ℃, stirring and reacting for 1h, separating, and drying in an oven at 60 ℃ for 2h to obtain the polyethyleneimine modified nano titanium dioxide polyethyleneimine.
The preparation method of the uvioresistant polypropylene non-woven fabric comprises the following steps:
1) placing the coral reef powder in a muffle furnace to be roasted for 1.5h at 250 ℃, then adding the coral reef powder into deionized water to carry out ultrasonic vibration cleaning, and drying at 60 ℃ after filtering and separation to obtain porous coral reef powder; adding an aminosilane coupling agent into an ethanol aqueous solution with the mass concentration of 70% according to the mass-volume ratio of 1g/80mL, adjusting the pH value of the system to 5, stirring and hydrolyzing at 55 ℃ for 30min to obtain an aminosilane coupling agent solution, adding porous coral reef powder into the aminosilane coupling agent solution, wherein the mass ratio of the porous coral reef powder to the aminosilane coupling agent is 1:0.2, stirring and reacting for 1h, and drying at 50 ℃ for 2h after separation to obtain modified porous coral reef powder;
2) adding piperazine into deionized water, stirring and dissolving to prepare a piperazine solution with the concentration of 5 wt%, adding trimesoyl chloride into N-hexane to prepare a trimesoyl chloride solution with the concentration of 1 wt%, soaking a polypropylene non-woven fabric in the piperazine aqueous solution for 10min, taking out, placing in the trimesoyl chloride solution, reacting at room temperature for 5min, taking out, placing in an oven, performing heat treatment for 15min, placing the heat-treated non-woven fabric in an N, N-dimethylformamide solution according to the bath ratio of 1:60, heating in a water bath to 60 ℃, adding thionyl chloride to perform acyl chlorination for 4h, wherein the addition amount of the thionyl chloride is 3% of the mass of the polypropylene non-woven fabric, taking out, and drying at 60 ℃;
3) adding the modified porous coral reef powder obtained in the step 1) into deionized water according to the mass-volume ratio of 1g/80mL, stirring and dispersing uniformly to obtain a suspension, immersing the dried polypropylene non-woven fabric obtained in the step 2) into the suspension, wherein the mass ratio of the porous coral reef powder to the polypropylene non-woven fabric is 1:10, heating the mixture in a water bath to 45 ℃, carrying out heat preservation reaction for 1h, taking out the mixture, and drying the mixture in an oven at 60 ℃ to obtain the non-woven fabric with the porous coral reef on the surface;
4) adding the modified nano titanium dioxide into deionized water according to the mass-volume ratio of 1g/80mL, performing ultrasonic oscillation dispersion for 30min under the power of 100W to obtain nano titanium dioxide dispersion liquid, placing the non-woven fabric with the porous coral reef loaded on the surface in the step 3) into the nano titanium dioxide dispersion liquid according to the bath ratio of 1:50, standing for adsorption for 2h, taking out, and placing in an oven for drying treatment for 2h at the temperature of 60 ℃ to obtain the nano titanium dioxide dispersion liquid.
Comparative example 1:
the preparation method of the uvioresistant polypropylene non-woven fabric comprises the following steps:
adding nano titanium dioxide into deionized water according to the mass-volume ratio of 2g/80mL, performing ultrasonic oscillation dispersion for 20min under the power of 100W to obtain nano titanium dioxide dispersion liquid, placing the polypropylene non-woven fabric into the nano titanium dioxide dispersion liquid according to the bath ratio of 1:50, standing for adsorption for 4h, taking out, placing in an oven, and performing drying treatment for 2h at the temperature of 60 ℃ to obtain the nano titanium dioxide dispersion liquid.
Comparative example 2:
comparative example 2 is different from example 1 in that the preparation method of the uv-resistant polypropylene nonwoven fabric comprises the following steps:
1) placing the coral reef powder in a muffle furnace to be roasted for 2 hours at the temperature of 200 ℃, then adding the coral reef powder into deionized water to carry out ultrasonic oscillation cleaning, and drying the coral reef powder at the temperature of 60 ℃ after filtering and separating to obtain porous coral reef powder; adding an aminosilane coupling agent into an ethanol aqueous solution with the mass concentration of 70% according to the mass-volume ratio of 1g/80mL, adjusting the pH value of the system to 5, stirring and hydrolyzing at 55 ℃ for 30min to obtain an aminosilane coupling agent solution, adding porous coral reef powder into the aminosilane coupling agent solution, wherein the mass ratio of the porous coral reef powder to the aminosilane coupling agent is 1:0.4, stirring and reacting for 1h, and drying at 50 ℃ for 2h after separation to obtain modified porous coral reef powder;
2) adding the modified porous coral reef powder obtained in the step 1) into deionized water according to the mass-volume ratio of 1g/80mL, stirring and dispersing uniformly to obtain a suspension, immersing a polypropylene non-woven fabric into the suspension, wherein the mass ratio of the porous coral reef powder to the polypropylene non-woven fabric is 1:6, heating in a water bath to 50 ℃, carrying out heat preservation reaction for 2 hours, taking out, and then placing in an oven to dry at 60 ℃ to obtain the non-woven fabric with the porous coral reef on the surface;
3) adding the modified nano titanium dioxide into deionized water according to the mass-volume ratio of 2g/80mL, performing ultrasonic oscillation dispersion for 20min under the power of 100W to obtain nano titanium dioxide dispersion liquid, placing the non-woven fabric with the porous coral reef loaded on the surface in the step 3) into the nano titanium dioxide dispersion liquid according to the bath ratio of 1:50, standing for adsorption for 4h, taking out, and placing in an oven for drying treatment for 2h at the temperature of 60 ℃ to obtain the nano titanium dioxide dispersion liquid.
Comparative example 3: comparative example 3 is different from example 1 in that the nano titanium dioxide is not modified.
Firstly, evaluating the uvioresistant performance of the polypropylene non-woven fabric:
the UV resistance of the non-woven fabrics of examples 1-4 and comparative examples 1-3 is tested according to GB/T18830-2009 method, and is characterized by UV UVA, UVB transmittance and UV protection system UPF, the UV transmittance is lower than 5% and the UPF value is higher than 40, the fabric is considered to have UV resistance, and the higher the UPF value is, the better the UV resistance of the non-woven fabric is proved. Examples 1-4 and comparative examples 1-3 the results of the ultraviolet UVA, UVB transmittance and ultraviolet protection system UPF tests are shown in the following table:
from the above tests, it can be known that the UV protection effect of the nonwoven fabric of the invention 1-4 is significantly better than that of the comparative examples 1-3. The test results of the examples and the comparative example 1 can obtain that the non-woven fabric obtained by simply dipping the non-woven fabric by using the finishing agent containing the nano titanium dioxide has poor ultraviolet protection effect, because the nano titanium dioxide cannot be effectively attached to the surface of the fiber by the nano titanium dioxide dipping method, so that the ultraviolet protection effect is poor. Can obtain through embodiment and comparison example 2 contrast, comparison example 2 polypropylene fiber surface does not pass through the cladding of polyamide layer, the non-woven fabrics ultraviolet protection performance who obtains obviously descends, the reason is that the polyamide layer can absorb partial ultraviolet ray, play ultraviolet protection's effect, in addition because the polyamide layer plays the connection effect to polypropylene fiber and coral reef granule, in the drying process comparison example 2 non-woven fabrics is owing to the connection effect that loses the polyamide layer, cause coral reef and polypropylene fiber to separate, reduce polypropylene non-woven fabrics ultraviolet protection effect. The embodiment can obtain the nanometer titanium dioxide after the modification of polyethyleneimine with the contrast of comparative example 3 and help improving the acting force of being connected between nanometer titanium dioxide and coral reef granule, avoid the nanometer titanium dioxide to drop from coral reef granule in the non-woven fabrics drying process.
Secondly, evaluating the washing resistance:
the non-woven fabrics of the examples 1 to 4 and the comparative examples 2 to 3 are soaked in the same amount of water for ultrasonic oscillation cleaning, the ultrasonic power is 100w, the ultrasonic washing time is 24h, the non-woven fabrics are placed in an oven for drying at 50 ℃ for 2h after being washed, and the non-woven fabrics are taken out and tested for the ultraviolet resistance by a GB/T18830-2009 method, wherein the test results are as follows:
according to the results of the ultraviolet protection test on the non-woven fabrics of examples 1-4 and comparative examples 2-3, the ultraviolet A and UVB transmittances and the UPF values of the non-woven fabrics of examples 1-4 of the invention are almost kept unchanged after ultrasonic vibration cleaning, while the ultraviolet protection performance of the non-woven fabrics of comparative examples 2-3 is reduced more. Can obtain by embodiment and comparison example 2 contrast, the effort of being connected between polypropylene fiber and the coral reef granule can be increased to polypropylene fiber surface polyamide layer, avoids the non-woven fabrics to break away from the non-woven fabrics surface at the washing in-process coral reef granule. Compared with the comparative example 3, the nano titanium dioxide obtained by the embodiment has the advantages that after the nano titanium dioxide is subjected to amination modification, the amino groups on the surface of the nano titanium dioxide and the amino groups on the coral reef particles form hydrogen bond acting force, and the nano titanium dioxide is prevented from falling off from the coral reef particles in the washing process of the non-woven fabric.
Claims (9)
1. The preparation method of the uvioresistant polypropylene non-woven fabric is characterized by comprising the following steps:
1) placing the coral reef powder in a muffle furnace for roasting, then adding the roasted coral reef powder into deionized water for ultrasonic oscillation cleaning and drying to obtain porous coral reef powder, and adding the porous coral reef powder into an aminosilane coupling agent solution for modification treatment;
2) soaking polypropylene nonwoven fabric in piperazine water solution for 10-20min, taking out, and placing in trimesoyl chloride solution at room temperature
Reacting for 5-10min, taking out, placing in an oven, performing heat treatment for 15-30min, placing the non-woven fabric after heat treatment in N, N-dimethylformamide solution, heating in water bath to 50-65 deg.C, adding thionyl chloride, performing acyl chlorination for 4-8h, taking out, and oven drying;
3) adding the modified porous coral reef powder obtained in the step 1) into deionized water, stirring and dispersing uniformly to obtain a suspension, immersing the polypropylene non-woven fabric dried in the step 2) into the suspension, heating in a water bath to 40-50 ℃, carrying out heat preservation reaction for 1-3h, taking out, and then placing in an oven for drying to obtain a non-woven fabric with the porous coral reef on the surface;
4) adding nano titanium dioxide into deionized water, performing ultrasonic oscillation dispersion for 20-50min to obtain nano titanium dioxide dispersion liquid, arranging the non-woven fabric with the porous coral reef loaded on the surface in the step 3) in the nano titanium dioxide dispersion liquid, standing for adsorption for 2-5h, taking out, and placing in an oven for drying treatment to obtain the product.
2. The method for preparing an uvioresistant polypropylene non-woven fabric according to claim 1, wherein the coral reef powder baking temperature in the step 1) is 200-300 ℃, and the baking time is 1-2 h.
3. The method for preparing an uvioresistant polypropylene non-woven fabric according to claim 1, wherein the mass ratio of the porous coral reef powder to the aminosilane coupling agent in the step 1) is 1: 0.2-0.5.
4. The method for preparing an uvioresistant polypropylene non-woven fabric according to claim 1, wherein the addition amount of the thionyl chloride in the step 2) is 3-6% of the mass of the polypropylene non-woven fabric.
5. The method for preparing an uvioresistant polypropylene non-woven fabric according to claim 1, wherein the mass ratio of the porous coral reef powder to the polypropylene non-woven fabric in the step 3) is 1: 5-10.
6. The method for preparing an uvioresistant polypropylene non-woven fabric according to claim 1, wherein the mass volume ratio of the nano titanium dioxide to the deionized water in the step 4) is 1-3g/80 mL.
7. The preparation method of the uvioresistant polypropylene non-woven fabric according to claim 1, wherein the nanometer titanium dioxide in the step 4) is subjected to modification treatment, and the modification treatment method comprises the following steps: adding nano titanium dioxide into an ethanol water solution for ultrasonic oscillation dispersion, then adding an epoxy silane coupling agent, stirring for reaction for 30-50min, drying after separation to obtain coupling agent modified nano titanium dioxide, placing the coupling agent modified nano titanium dioxide into a polyethyleneimine solution, adjusting the pH of the system to 8.5-9.0, heating to 50-60 ℃, stirring for reaction for 1-3h, separating, and then placing in an oven for drying to obtain the nano titanium dioxide modified nano titanium dioxide.
8. The method for preparing an uvioresistant polypropylene non-woven fabric according to claim 7, wherein the mass ratio of the nano titanium dioxide to the epoxy silane coupling agent is 1: 1-2.
9. The preparation method of the uvioresistant polypropylene non-woven fabric according to claim 7, wherein the mass ratio of the coupling agent modified nano titanium dioxide to the polyethyleneimine is 1: 0.2-0.6.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111892772A (en) * | 2020-07-28 | 2020-11-06 | 苏州工业园区拓朴环保净化有限公司 | Modified polypropylene master batch, modified melt-blown fabric material and improved melt-blown fabric processing method |
| CN112853604A (en) * | 2020-12-28 | 2021-05-28 | 乐昌市宝创环保新材料制品有限公司 | Non-woven fabric fiber material for medical and health protection and production process thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111892772A (en) * | 2020-07-28 | 2020-11-06 | 苏州工业园区拓朴环保净化有限公司 | Modified polypropylene master batch, modified melt-blown fabric material and improved melt-blown fabric processing method |
| CN112853604A (en) * | 2020-12-28 | 2021-05-28 | 乐昌市宝创环保新材料制品有限公司 | Non-woven fabric fiber material for medical and health protection and production process thereof |
| CN112853604B (en) * | 2020-12-28 | 2021-09-21 | 乐昌市宝创环保新材料制品有限公司 | Non-woven fabric fiber material for medical and health protection and production process thereof |
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Application publication date: 20200417 |