CN115305710A - Anti-ultraviolet non-woven material and production process thereof - Google Patents
Anti-ultraviolet non-woven material and production process thereof Download PDFInfo
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- CN115305710A CN115305710A CN202210943461.7A CN202210943461A CN115305710A CN 115305710 A CN115305710 A CN 115305710A CN 202210943461 A CN202210943461 A CN 202210943461A CN 115305710 A CN115305710 A CN 115305710A
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- ultraviolet
- resistant
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- parts
- reflective filler
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- 239000000463 material Substances 0.000 title claims abstract description 71
- 238000004519 manufacturing process Methods 0.000 title abstract description 10
- 239000002585 base Substances 0.000 claims abstract description 59
- 239000004744 fabric Substances 0.000 claims abstract description 59
- 239000000945 filler Substances 0.000 claims abstract description 50
- 239000000835 fiber Substances 0.000 claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 29
- 239000004626 polylactic acid Substances 0.000 claims abstract description 29
- 239000002131 composite material Substances 0.000 claims abstract description 28
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000440 bentonite Substances 0.000 claims abstract description 25
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 25
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 12
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 12
- 241001330002 Bambuseae Species 0.000 claims abstract description 12
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 12
- 239000011425 bamboo Substances 0.000 claims abstract description 12
- 238000007664 blowing Methods 0.000 claims abstract description 7
- 239000004094 surface-active agent Substances 0.000 claims abstract description 7
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims abstract description 6
- 239000003513 alkali Substances 0.000 claims abstract description 5
- 239000003365 glass fiber Substances 0.000 claims description 23
- 238000002156 mixing Methods 0.000 claims description 19
- 239000002250 absorbent Substances 0.000 claims description 15
- 230000002745 absorbent Effects 0.000 claims description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 12
- ZQBAKBUEJOMQEX-UHFFFAOYSA-N phenyl salicylate Chemical compound OC1=CC=CC=C1C(=O)OC1=CC=CC=C1 ZQBAKBUEJOMQEX-UHFFFAOYSA-N 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 229960000969 phenyl salicylate Drugs 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 5
- 229920002522 Wood fibre Polymers 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 4
- 239000002025 wood fiber Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 claims description 2
- 239000000454 talc Substances 0.000 claims 2
- 229910052623 talc Inorganic materials 0.000 claims 2
- 238000002834 transmittance Methods 0.000 abstract description 11
- 238000002360 preparation method Methods 0.000 description 32
- 230000000052 comparative effect Effects 0.000 description 24
- 230000000694 effects Effects 0.000 description 14
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical group O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 12
- 239000002202 Polyethylene glycol Substances 0.000 description 9
- 125000004185 ester group Chemical group 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- 229920001223 polyethylene glycol Polymers 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229920002678 cellulose Polymers 0.000 description 7
- 239000001913 cellulose Substances 0.000 description 7
- 150000007529 inorganic bases Chemical class 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- ZZNQQQWFKKTOSD-UHFFFAOYSA-N diethoxy(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](OCC)(OCC)C1=CC=CC=C1 ZZNQQQWFKKTOSD-UHFFFAOYSA-N 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 4
- 238000006460 hydrolysis reaction Methods 0.000 description 4
- 229920003225 polyurethane elastomer Polymers 0.000 description 4
- 229960001860 salicylate Drugs 0.000 description 4
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 4
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-M phenolate Chemical compound [O-]C1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-M 0.000 description 3
- 229940031826 phenolate Drugs 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 238000005904 alkaline hydrolysis reaction Methods 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 229960004889 salicylic acid Drugs 0.000 description 2
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical group CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 2
- 229920001046 Nanocellulose Polymers 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical group [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical group C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000012801 ultraviolet ray absorbent Substances 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
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/106—Radiation shielding agents, e.g. absorbing, reflecting agents
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43825—Composite fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/12—Aldehydes; Ketones
- D06M13/127—Mono-aldehydes, e.g. formaldehyde; Monoketones
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
-
- 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
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
-
- 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
Abstract
The application relates to the technical field of non-woven materials, and particularly discloses an anti-ultraviolet non-woven material and a production process thereof. The ultraviolet-resistant non-woven material is obtained by baking a base fabric soaked with ultraviolet-resistant finishing liquid, wherein the components of the ultraviolet-resistant finishing liquid comprise an ultraviolet absorber, water, inorganic alkali, a surfactant and bentonite, the base fabric is obtained by melt-blowing a composite melt, and the composite melt comprises the following components in parts by weight: 12-16 parts of polylactic acid, 5.4-5.8 parts of modified reflective filler and 2.4-2.8 parts of toughening fiber, wherein the toughening fiber comprises bamboo fiber, and the modified reflective filler is ultraviolet reflective filler pretreated by a silane coupling agent. The application reduces the transmittance of ultraviolet rays to the non-woven material and reduces the damage of the ultraviolet rays to the skin of a wearer.
Description
Technical Field
The application relates to the technical field of non-woven materials, in particular to an ultraviolet-resistant non-woven material and a production process thereof.
Background
The nonwoven material is a flexible material obtained by processing raw materials such as a high molecular polymer, a fibrous aggregate and the like by a physical or chemical method, and is widely applied to various fields such as aerospace, environmental protection, medical health care, building material and construction, agriculture and the like. Polylactic acid is a common material for preparing non-woven materials, and the molecules of polylactic acid do not contain aromatic rings, so that the polylactic acid product is not easy to absorb ultraviolet rays, and the non-woven materials made of the polylactic acid are not easy to age under the irradiation of the ultraviolet rays.
In the related technology, the polylactic acid elastic superfine fiber non-woven material is obtained by melt-blown molding and hot stretching treatment of polymer melt, wherein the polymer melt is obtained by mixing and processing polylactic acid, polyethylene glycol, nano-cellulose and polyurethane elastomer according to the weight ratio of (6-7) to (2-4) to (1-2) until the polylactic acid elastic superfine fiber non-woven material is melted.
In view of the above-mentioned related arts, the inventors of the present invention have considered that although a nonwoven material is made of polylactic acid as a main raw material, the polylactic acid has high transparency and hardly absorbs ultraviolet rays, so that ultraviolet rays easily transmit through the nonwoven material. In a region where sunlight is strong, in the case of a garment made of a nonwoven material of the related art, ultraviolet rays in sunlight easily cause damage to the skin of a wearer after passing through the nonwoven material.
Disclosure of Invention
In areas where sunlight is intense, ultraviolet rays in the sun tend to damage the wearer's skin when they pass through the nonwoven material. To ameliorate this deficiency, the present application provides a uv resistant nonwoven material and a process for producing the same.
In a first aspect, the present application provides an ultraviolet resistant nonwoven material, which adopts the following technical scheme:
the ultraviolet-resistant non-woven material is obtained by baking a base fabric soaked with ultraviolet-resistant finishing liquid, wherein the components of the ultraviolet-resistant finishing liquid comprise an ultraviolet absorber, water, inorganic alkali, a surfactant and bentonite, the base fabric is obtained by melt-blowing a composite melt, and the composite melt comprises the following components in parts by weight: 12-16 parts of polylactic acid, 5.4-5.8 parts of modified reflective filler and 2.4-2.8 parts of toughening fiber, wherein the toughening fiber comprises bamboo fiber, and the modified reflective filler is ultraviolet reflective filler pretreated by a silane coupling agent.
By adopting the technical scheme, compared with the related technology, the application removes polyethylene glycol, nano-cellulose and polyurethane elastomer, and compensates the lost mechanical property by adding toughening fiber. On the basis, the modified reflective filler is mixed with the polylactic acid and the toughening fibers to prepare a composite melt, and then the base cloth is obtained from the composite melt. When the base cloth is soaked in the anti-ultraviolet finishing liquid, the ester group on the surface of the base cloth is hydrolyzed by the inorganic base in the anti-ultraviolet finishing liquid, so that the number of polar groups on the surface of the base cloth is increased, and the absorption effect of the base cloth on the anti-ultraviolet finishing liquid is improved. While the base cloth absorbs the ultraviolet-resistant finishing liquid, bentonite in the ultraviolet-resistant finishing liquid is attached to the surface of the base cloth, the bentonite can be activated by the inorganic alkali, the adsorbability of the bentonite is improved, and the ultraviolet absorbent is adsorbed by the bentonite and forms a composite layer of the ultraviolet absorbent and the bentonite on the surface of the base cloth. And after the base cloth soaked with the ultraviolet-resistant finishing liquid is baked, the composite layer and the base cloth are combined into a whole, so that the ultraviolet-resistant non-woven material is obtained.
When the ultraviolet-resistant non-woven material is irradiated by ultraviolet light, the bentonite in the composite layer scatters the ultraviolet light, and the ultraviolet absorbent absorbs the scattered ultraviolet light, so that the ultraviolet light is weakened preliminarily. After the weakened ultraviolet rays enter the base cloth, the modified reflective filler distributed in the base cloth performs diffuse reflection on the ultraviolet rays, the possibility that the ultraviolet rays directly penetrate through the base cloth is reduced, the toughening fiber comprises bamboo fiber, the main component of the bamboo fiber is lignin, and the lignin contains a large number of benzene rings, so that the bamboo fiber can absorb a part of ultraviolet rays in the base cloth. Part of the ultraviolet rays diffusely reflected in the base fabric are reflected in the reflection-reversion layer and absorbed by the ultraviolet absorber, thereby secondarily attenuating the ultraviolet rays. After the residual ultraviolet rays pass through the base cloth, the ultraviolet ray absorbent in the composite layer on the other side of the base cloth absorbs the residual ultraviolet rays, so that the transmittance of the ultraviolet rays to the non-woven material is finally reduced, and the damage of the ultraviolet rays to the skin of a wearer is reduced.
Preferably, the composite melt comprises the following components in parts by weight: 13-15 parts of polylactic acid, 5.5-5.7 parts of modified reflective filler and 2.5-2.7 parts of toughening fiber.
By adopting the technical scheme, the raw material proportion of the composite melt is optimized, and the transmittance of ultraviolet rays to the non-woven material is favorably reduced.
Preferably, the modified reflective filler is prepared as follows:
(1) Adding a silane coupling agent and a coupling aid into water, and uniformly mixing to obtain a modified solution;
(2) And uniformly mixing the ultraviolet reflection filler and the modification liquid, heating at 80-90 ℃ for 2-3h, filtering to remove the liquid in the mixture, and drying the residual solid to obtain the modified reflection filler.
By adopting the technical scheme, the silane coupling agent is hydrolyzed in water to obtain the modification liquid, then the ultraviolet reflection filler is treated by using the modification liquid, so that the silane coupling agent is grafted with the organic chain segment on the surface of the ultraviolet reflection filler, and the modified reflection filler is obtained after drying. The organic chain segment introduced by the silane coupling agent can enhance the compatibility of the ultraviolet reflection filler and the polylactic acid melt, and is beneficial to reducing the structural defects of the base cloth.
Preferably, the ultraviolet reflecting filler is talcum powder or calcium carbonate.
By adopting the technical scheme, both the talcum powder and the calcium carbonate can be used as the ultraviolet reflection filler, wherein the talcum powder is easier to peel compared with the calcium carbonate, and the preparation of the modified reflection filler with smaller particle size is facilitated. Reducing the particle size of the modified reflective filler is not only beneficial to the uniform dispersion of the modified reflective filler in an organic melt, but also beneficial to improving the diffuse reflection effect on ultraviolet rays.
Preferably, the ultraviolet reflection filler is talcum powder, and the coupling aid is triethanolamine.
By adopting the technical scheme, the triethanolamine has alkalescence and can promote the hydrolysis of the silane coupling agent. When the ultraviolet reflection filler is talcum powder, the triethanolamine can promote the peeling of the talcum powder, so that the particle size of the modified reflection filler is reduced, and the improvement of the diffuse reflection effect on ultraviolet rays is facilitated.
Preferably, the toughening fiber further comprises a modified glass fiber, and the modified glass fiber is a glass fiber which is subjected to dipping treatment by using a silane coupling agent and then dried.
By adopting the technical scheme, the modified glass fiber can also play a toughening effect, and the modified glass fiber can refract ultraviolet light, enhance diffuse reflection of the ultraviolet light and contribute to reducing the transmittance of the ultraviolet light to the non-woven material.
Preferably, the toughening fibers are prepared from bamboo fibers and modified glass fibers according to the weight ratio of (3.2-3.6): 1 by weight ratio.
By adopting the technical scheme, the weight ratio of the bamboo fibers to the modified glass fibers is optimized, and the transmittance of ultraviolet rays to the non-woven material is favorably reduced.
Preferably, the pH value of the ultraviolet-resistant finishing liquid is 11.4-12.2.
By adopting the technical scheme, when the pH value of the ultraviolet-resistant finishing liquid is too high, the hydrolysis effect of the ultraviolet-resistant finishing liquid on ester groups in the base cloth is too strong, so that the hydrolyzed chain segments are easy to fall off, and the adhesion of bentonite on the surface of the base cloth is influenced. When the pH value of the ultraviolet-resistant finishing liquid is too low, the hydrolyzed ester group on the surface of the base cloth is insufficient, so that the base cloth cannot generate enough adsorption force with bentonite. When the pH value of the ultraviolet-resistant finishing liquid is 11.4-12.2, the bentonite has good adhesion effect on the surface of the base fabric, and the content of the ultraviolet absorbent on the surface of the non-woven material is increased.
Preferably, the ultraviolet absorber comprises phenyl salicylate.
By adopting the technical scheme, phenyl salicylate is insoluble in water, but in the ultraviolet-resistant finishing liquid, phenyl salicylate can be subjected to alkaline hydrolysis to generate phenol and salicylic acid, and the phenol and the salicylic acid are further reacted with an inorganic base to generate corresponding salts. The phenolate and the salicylate are both easy to dissolve in water and to be adsorbed by bentonite, and the phenolate and the salicylate can introduce aromatic rings into the surface of the non-woven material, so that the phenolate and the salicylate can absorb ultraviolet rays.
In a second aspect, the present application provides a process for producing an ultraviolet-resistant nonwoven material, which adopts the following technical scheme.
A production process of an ultraviolet-resistant non-woven material comprises the following steps:
(1) Uniformly mixing polylactic acid, modified reflective filler and toughened fiber, and heating to obtain a composite melt; uniformly mixing an ultraviolet absorbent, water, inorganic base, a surfactant and bentonite to obtain an ultraviolet-resistant finishing liquid;
(2) Carrying out melt-blowing processing on the composite melt to obtain base cloth;
(3) And (3) dipping the base cloth in the anti-ultraviolet finishing liquid for 8-10min, then fishing out the base cloth and baking, and drying the base cloth to obtain the anti-ultraviolet non-woven material.
By adopting the technical scheme, the composite melt containing polylactic acid is used as a raw material for melt-blown processing, the base cloth is prepared, then the base cloth is treated by the ultraviolet-resistant finishing liquid, ester groups in the base cloth are partially hydrolyzed, the hydrolyzed ester groups in the base cloth are utilized to adsorb bentonite, an ultraviolet absorbent is adsorbed by the bentonite, the ultraviolet absorbent and the bentonite form a composite layer on the surface of the base cloth, and the composite layer and the base cloth jointly form the ultraviolet-resistant non-woven material.
In summary, the present application has the following beneficial effects:
1. the non-woven material of this application passes through the bentonite scattering ultraviolet ray on base cloth surface to absorb and weaken the ultraviolet ray through ultraviolet absorbent, modified reflection filler in the base cloth makes the ultraviolet ray take place diffuse reflection, has finally reduced the transmissivity of ultraviolet ray to non-woven material, has reduced the damage that the ultraviolet ray that sees through non-woven material led to the fact the skin of wearing person.
2. In the application, triethanolamine is preferably used as a coupling assistant, on one hand, the triethanolamine can promote the hydrolysis of a silane coupling agent through the alkalescence of the triethanolamine, and on the other hand, the triethanolamine can promote the stripping of the talcum powder, so that the particle size of the talcum powder is reduced, the diffuse reflection effect of the talcum powder on ultraviolet rays is improved, and the reduction of the transmittance of the ultraviolet rays on a non-woven material is facilitated.
3. According to the method, a base fabric is prepared by taking a composite melt containing polylactic acid as a raw material, ester groups in the base fabric are partially hydrolyzed through an anti-ultraviolet finishing liquid, the ester groups hydrolyzed in the base fabric are used for adsorbing bentonite, the bentonite is used as an adsorbent, an ultraviolet absorbent is loaded on the surface of the base fabric, and the anti-ultraviolet non-woven material is obtained after baking.
Detailed Description
The present application will be described in further detail with reference to examples, preparations and comparative examples, and all of the starting materials mentioned in the present application are commercially available.
Preparation of modified reflective Filler
The following will explain preparation example 1 as an example.
Preparation example 1
In this preparation example, the modified reflective filler was prepared as follows:
in the preparation example, the silane coupling agent is methyl triethoxysilane, the coupling aid is triethanolamine, and the ultraviolet reflective filler is calcium carbonate with an average particle size of 40 μm.
(1) Adding 0.8kg of silane coupling agent and 0.5kg of coupling aid into 8kg of water, and uniformly mixing to obtain a modified solution; (2) And (2) uniformly mixing 6kg of ultraviolet reflective filler and the modified liquid obtained in the step (1), heating at 85 ℃ for 2.5h, filtering to remove liquid in the mixture, and drying the residual solid in an oven at 105 ℃ for 5h to obtain the modified reflective filler.
Preparation example 2
The difference between the preparation example and the preparation example 1 is that talc powder with an average particle size of 40 μm is used as the ultraviolet reflecting filler.
Preparation example 3
This production example is different from production example 2 in that diphenyldiethoxysilane is used as the coupling agent.
Preparation example 4
The difference between the benzene preparation example and the preparation example 2 is that the coupling assistant is 0.1mol/L ammonia water, and the amount of the ammonia water is 0.45kg.
Examples of production of modified glass fibers
Preparation example 5 is described below as an example.
Preparation example 5
In this preparation example, methyl triethoxysilane was used as the silane coupling agent, triethanolamine was used as the coupling aid, and glass fibers were glass fibers that meet the regulation of JC-T896-2002 chopped glass fibers, and had a diameter of 9 μm and a nominal length of 3mm.
In this preparation example, the modified glass fiber was prepared as follows:
adding 0.7kg of silane coupling agent, 0.2kg of coupling aid and 3.2kg of glass fiber into 9.5kg of water, stirring at the speed of 120r/min, heating in a water bath at 80 ℃ for 1.5h, performing suction filtration, and baking the obtained filter cake at 105 ℃ for 5h to obtain the modified glass fiber.
Preparation example 6
This production example is different from production example 5 in that diphenyldiethoxysilane is used as the coupling agent.
Examples
Examples 1 to 5
The following description will be given by taking example 1 as an example.
Example 1
In this example, the uv resistant nonwoven material was prepared according to the following steps:
(1) Uniformly mixing 12kg of polylactic acid (CAS number 31852-84-3), 5.4kg of the modified reflective filler of preparation example 1 and 2.4kg of the toughening fiber of preparation example 5, and heating the mixture in a double-screw extruder to 200 ℃ to obtain a composite melt; uniformly mixing 1.5kg of ultraviolet absorbent, 12kg of water, 0.2kg of surfactant and 3kg of bentonite, and adjusting the pH of the mixture to 11 by using inorganic base to obtain an ultraviolet-resistant finishing liquid; in the step, the ultraviolet absorbent is benzophenone, and the surfactant is sodium dodecyl sulfate;
(2) Carrying out melt-blowing processing on the composite melt under the conditions that the temperature of hot air flow is 230 ℃ and the pressure of the hot air is 45kPa to obtain base cloth;
(3) And (3) dipping the base cloth in the anti-ultraviolet finishing liquid for 5min, then fishing out the base cloth and baking the base cloth at 105 ℃ for 120min to obtain the anti-ultraviolet non-woven material.
As shown in Table 1, examples 1 to 5 are different mainly in the raw material ratio of the composite melt
TABLE 1
| Sample(s) | Polylactic acid/kg | Modified reflective Filler/kg | Toughening fiber/kg |
| Example 1 | 12 | 5.4 | 2.4 |
| Example 2 | 13 | 5.5 | 2.5 |
| Example 3 | 14 | 5.6 | 2.6 |
| Example 4 | 15 | 5.7 | 2.7 |
| Example 5 | 16 | 5.8 | 2.8 |
Example 6
This example differs from example 3 in that the modified reflective filler of preparation example 1 was replaced with the modified reflective filler of preparation example 2.
As shown in table 2, examples 3 and 6 to 8 are different in the preparation examples of the modified reflective filler.
TABLE 2
| Sample(s) | Example 3 | Example 6 | Example 7 | Example 8 |
| Preparation of modified reflective Filler | Preparation example 1 | Preparation example 2 | Preparation example 3 | Preparation example 4 |
Example 9
This example differs from example 7 in that the modified glass fiber of preparation example 6 was used instead of the modified glass fiber of preparation example 5.
Example 10
The difference between the embodiment and the embodiment 9 is that the toughening fibers are formed by mixing bamboo fibers and the modified glass fibers of the preparation example 6 according to the weight ratio of 3.
As shown in Table 3, examples 10-14 differ in the weight ratio of bamboo wood fibers to modified glass fibers.
TABLE 3
Examples 15 to 18
As in table 4, example 12 differs from examples 15-18 in the pH of the uv-resistant finish.
TABLE 4
| Sample(s) | Example 12 | Example 15 | Example 16 | Example 17 | Example 18 |
| pH of the anti-UV finishing liquor | 11 | 11.4 | 11.8 | 12.2 | 12.6 |
Example 19
This example differs from example 16 in that the ultraviolet absorber is phenyl salicylate.
Comparative example
Comparative example 1
A polylactic acid elastic superfine fiber non-woven material is prepared according to the following method:
(1) Heating 1.5kg of polyethylene glycol to melt at 90 ℃, and preparing a polyethylene glycol aqueous solution with the mass fraction of 30% for later use; preparing 1.5kg of nano-cellulose and water into an aqueous dispersion according to the weight ratio of 3;
(2) Mixing a polyethylene glycol aqueous solution and a nano-cellulose aqueous dispersion, and then performing vacuum suction at 90 ℃ until the water content PPM is less than 50 to obtain a polyethylene glycol/nano-cellulose blended solution;
(3) Uniformly mixing the polyethylene glycol/nano-cellulose blending solution and 6.5kg of polylactic acid particles at the temperature of 80 ℃ under the protection of nitrogen, and then cooling to 10 ℃ to obtain a polylactic acid/polyethylene glycol/nano-cellulose blending material;
(4) Mixing polylactic acid/polyethylene glycol/nano cellulose blend with 2.5kg of polyurethane elastomer, adding the mixture into a screw extruder, and heating the mixture in the screw extruder to be molten at 210 ℃ to obtain polymer melt; in this step, the CAS number of the polyurethane elastomer is 9009-54-5;
(5) Carrying out melt-blowing processing on the polymer melt under the conditions that the temperature of hot air flow is 230 ℃ and the pressure of the hot air flow is 45kPa to obtain a polylactic acid elastic superfine fiber melt-blown fiber web;
(6) And (3) carrying out three-stage hot drawing processing on the polylactic acid elastic superfine fiber melt-blown fiber web at the temperature of 70 ℃, setting the secondary drawing multiplying power to be 1.8 and the tertiary drawing multiplying power to be 2.4, and obtaining the polylactic acid elastic superfine fiber non-woven material after the hot drawing processing is finished.
Comparative example 2
This comparative example differs from example 3 in that the anti-uv finish does not contain an inorganic base.
Comparative example 3
This comparative example differs from example 3 in that bentonite was replaced with activated carbon.
Comparative example 4
This comparative example differs from example 3 in that the composite melt does not contain toughening fibers.
Performance test method
The areal density of the test specimens tested in this application was 200g/m 2 .
The UV transmittance (T/%) of the nonwoven material was measured on a Labsphere UV-1000F textile UV protection factor tester, available from Labsphere, USA, by calculating the ratio R of the T value measured for each of the examples and comparative examples to the T value measured for comparative example 1, in percent, according to AS/NZS 4399.
TABLE 5
| Sample(s) | R/％ | Sample(s) | R/％ |
| Example 1 | 42.6 | Example 13 | 35.5 |
| Example 2 | 42.3 | Example 14 | 36.3 |
| Example 3 | 42.2 | Example 15 | 34.1 |
| Example 4 | 42.4 | Example 16 | 33.2 |
| Example 5 | 42.5 | Example 17 | 33.7 |
| Example 6 | 40.7 | Example 18 | 35.0 |
| Example 7 | 38.4 | Example 19 | 30.4 |
| Example 8 | 41.9 | Comparative example 1 | 100.0 |
| Example 9 | 35.8 | Comparative example 2 | 68.7 |
| Example 10 | 36.2 | Comparative example 3 | 54.2 |
| Example 11 | 35.7 | Comparative example 4 | 61.4 |
| Example 12 | 35.4 | / | / |
As can be seen by combining examples 1-5 and comparative example 1 with Table 5, the R values calculated for examples 1-5 were all less than 100%, indicating that the nonwoven materials of examples 1-5 provide better resistance to UV transmission than the nonwoven material of comparative example 1.
Combining example 3 and comparative example 2 and table 5, it can be seen that the R value calculated in example 3 is smaller than that calculated in comparative example 2, which indicates that in comparative example 2, because the anti-ultraviolet finishing liquid does not contain inorganic base, the ester group in the base fabric is difficult to hydrolyze, and the surface of the base fabric is difficult to generate new polar groups, which affects the adhesion of bentonite on the surface of the base fabric, and results in less ultraviolet absorbent on the surface of the nonwoven material.
It can be seen by combining example 3 and comparative example 3 with table 5 that the R value calculated in example 3 is smaller than that of comparative example 3, which indicates that the polarity of the activated carbon is weak, and the polar groups generated after hydrolysis of the ester groups on the surface of the base fabric are not easily adsorbed by the activated carbon, which affects the adhesion of the activated carbon on the surface of the base fabric, resulting in less ultraviolet absorbent on the surface of the nonwoven material.
It can be seen by combining example 3 and comparative example 4 and combining table 5 that the R value calculated in example 3 is smaller than that in comparative example 4, which shows that when the composite melt does not contain the toughening fibers, the effect of the non-woven material on absorbing ultraviolet rays is affected after the toughening fibers are removed because the bamboo and wood fibers in the toughening fibers originally can absorb a part of ultraviolet rays.
When example 3 and example 6 are combined and table 5 is combined, the R value measured in example 6 is smaller than that in example 3, which shows that the talcum powder is easier to peel off compared with calcium carbonate under the action of triethanolamine, so that the particle size of the modified reflective filler is reduced, and the diffuse reflection effect on ultraviolet rays is improved.
As can be seen by combining example 6 and example 7 and table 5, the R value measured in example 7 is smaller than that in example 6, which shows that the benzene ring introduced by the diphenyldiethoxysilane enhances the ultraviolet absorption effect of the nonwoven material and reduces the transmittance of ultraviolet to the nonwoven material.
When example 8 and example 6 are combined and table 5 is combined, the R value measured in example 8 is greater than that in example 6, which shows that when ammonia is used instead of triethanolamine, the peeling effect of the talc powder is poor, and the particle size of the modified reflective filler is relatively large, which is not good for improving the diffuse reflection effect of ultraviolet rays.
As can be seen by combining example 7 and example 9 and table 5, the R value measured in example 9 is smaller than that in example 7, which shows that the benzene ring introduced by the diphenyldiethoxysilane enhances the ultraviolet absorption effect of the nonwoven material again and reduces the transmittance of ultraviolet to the nonwoven material.
Combining example 9, examples 10-14 and table 5, it can be seen that in examples 10-14, the R values measured for examples 10 and 14 are greater than example 9, while the R values measured for examples 11-13 are less than example 9, indicating that when the toughening fibers are made from bamboo and wood fibers and modified glass fibers according to (3.2-3.6): 1, the uv transmittance of the nonwoven material is relatively low.
It can be seen from the combination of examples 12 and 15-18 and table 5 that the R values measured in examples 12 and 18 are less than those measured in examples 15-17, which shows that when the pH of the anti-uv finishing liquid is 11.4-12.2, the adhesion effect of bentonite on the surface of the base fabric is better, and the content of the uv absorber on the surface of the nonwoven material is increased.
As can be seen by combining example 16 and example 19 and table 5, the R value measured in example 19 is smaller than that in example 16, which shows that after the phenyl salicylate is subjected to alkaline hydrolysis, the generated phenate and salicylate are easily adsorbed by bentonite, the content of the ultraviolet absorbent on the surface of the non-woven material is increased, and the transmittance of ultraviolet rays to the non-woven material is reduced.
As can be seen from a combination of example 19, examples 21 to 23 and Table 5.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. The ultraviolet-resistant non-woven material is characterized in that the ultraviolet-resistant non-woven material is obtained by baking a base fabric soaked with ultraviolet-resistant finishing liquid, the components of the ultraviolet-resistant finishing liquid comprise an ultraviolet absorber, water, inorganic alkali, a surfactant and bentonite, the base fabric is obtained by melt-blowing a composite melt, and the composite melt comprises the following components in parts by weight: 12-16 parts of polylactic acid, 5.4-5.8 parts of modified reflective filler and 2.4-2.8 parts of toughening fiber, wherein the toughening fiber comprises bamboo fiber, and the modified reflective filler is ultraviolet reflective filler pretreated by a silane coupling agent.
2. The UV resistant nonwoven material of claim 1 wherein the composite melt comprises the following components in parts by weight: 13-15 parts of polylactic acid, 5.5-5.7 parts of modified reflective filler and 2.5-2.7 parts of toughening fiber.
3. The UV resistant nonwoven material of claim 1 wherein the modified reflective filler is prepared by the following method:
(1) Adding a silane coupling agent and a coupling aid into water, and uniformly mixing to obtain a modified solution;
(2) And uniformly mixing the ultraviolet reflection filler and the modification liquid, heating at 80-90 ℃ for 2-3h, filtering to remove the liquid in the mixture, and drying the residual solid to obtain the modified reflection filler.
4. The UV resistant nonwoven material of claim 3 wherein the UV reflective filler is talc or calcium carbonate.
5. The UV resistant nonwoven material of claim 4 wherein the UV reflective filler is talc and the coupling aid is triethanolamine.
6. The ultraviolet-resistant non-woven material according to claim 1, wherein the toughening fibers further comprise modified glass fibers, and the modified glass fibers are glass fibers which are dried after being impregnated with a silane coupling agent.
7. The ultraviolet-resistant nonwoven material of claim 6, wherein the toughening fibers are formed by bamboo-wood fibers and modified glass fibers according to the weight ratio of (3.2-3.6): 1 by weight ratio.
8. The UV resistant nonwoven material of claim 1 wherein the pH of the UV resistant finish is in the range of 11.4 to 12.2.
9. The UV resistant nonwoven material of claim 8 wherein the UV absorber comprises phenyl salicylate.
10. The process for producing a uv-resistant nonwoven material according to any one of claims 1 to 9, comprising the steps of:
(1) Uniformly mixing polylactic acid, modified reflective filler and toughened fiber, and heating to obtain a composite melt; uniformly mixing an ultraviolet absorbent, water, inorganic alkali, a surfactant and bentonite to obtain an ultraviolet-resistant finishing liquid;
(2) Carrying out melt-blowing processing on the composite melt to obtain base cloth;
(3) And (3) dipping the base cloth in the anti-ultraviolet finishing liquid for 8-10min, then fishing out the base cloth and baking, and drying the base cloth to obtain the anti-ultraviolet non-woven material.
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