CN116289295B - Cotton-milk moisturizing soft towel and production process thereof - Google Patents
Cotton-milk moisturizing soft towel and production process thereof Download PDFInfo
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- CN116289295B CN116289295B CN202310312979.5A CN202310312979A CN116289295B CN 116289295 B CN116289295 B CN 116289295B CN 202310312979 A CN202310312979 A CN 202310312979A CN 116289295 B CN116289295 B CN 116289295B
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- 230000003020 moisturizing effect Effects 0.000 title claims abstract description 32
- 239000008267 milk Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 229920000742 Cotton Polymers 0.000 claims abstract description 107
- 239000000835 fiber Substances 0.000 claims abstract description 66
- 210000004080 milk Anatomy 0.000 claims abstract description 20
- 235000013336 milk Nutrition 0.000 claims abstract description 20
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 11
- 241000381602 Vachellia nebrownii Species 0.000 claims abstract description 3
- 238000013329 compounding Methods 0.000 claims abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 239000000243 solution Substances 0.000 claims description 39
- 239000002131 composite material Substances 0.000 claims description 29
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 22
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 20
- 239000002002 slurry Substances 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 19
- 239000012065 filter cake Substances 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 18
- 239000011259 mixed solution Substances 0.000 claims description 18
- 238000002791 soaking Methods 0.000 claims description 16
- VSFYIPJGGXNVQM-UHFFFAOYSA-M azanium sodium hydrogen carbonate Chemical compound [NH4+].[Na+].OC([O-])=O.OC([O-])=O VSFYIPJGGXNVQM-UHFFFAOYSA-M 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 13
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 239000001110 calcium chloride Substances 0.000 claims description 12
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 12
- 239000000395 magnesium oxide Substances 0.000 claims description 12
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 12
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 12
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 12
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 10
- 239000001099 ammonium carbonate Substances 0.000 claims description 10
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 239000000839 emulsion Substances 0.000 claims description 10
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 10
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 10
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 10
- 238000004537 pulping Methods 0.000 claims description 8
- 238000010009 beating Methods 0.000 claims description 7
- 238000009835 boiling Methods 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000009775 high-speed stirring Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 230000003301 hydrolyzing effect Effects 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims 1
- 238000003756 stirring Methods 0.000 claims 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 6
- 125000003700 epoxy group Chemical group 0.000 abstract description 4
- 150000002632 lipids Chemical class 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract description 3
- 230000000977 initiatory effect Effects 0.000 abstract description 2
- 239000011159 matrix material Substances 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 abstract description 2
- 125000003277 amino group Chemical group 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 238000002360 preparation method Methods 0.000 description 12
- 230000014759 maintenance of location Effects 0.000 description 7
- 230000007062 hydrolysis Effects 0.000 description 5
- 238000006460 hydrolysis reaction Methods 0.000 description 5
- 238000010907 mechanical stirring Methods 0.000 description 5
- 210000004872 soft tissue Anatomy 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 241000238876 Acari Species 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229920002385 Sodium hyaluronate Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229940069521 aloe extract Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229960005150 glycerol Drugs 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000037307 sensitive skin Effects 0.000 description 1
- 229940010747 sodium hyaluronate Drugs 0.000 description 1
- YWIVKILSMZOHHF-QJZPQSOGSA-N sodium;(2s,3s,4s,5r,6r)-6-[(2s,3r,4r,5s,6r)-3-acetamido-2-[(2s,3s,4r,5r,6r)-6-[(2r,3r,4r,5s,6r)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-2-carboxy-4,5-dihydroxyoxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxyoxane-2- Chemical compound [Na+].CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O[C@H]3[C@@H]([C@@H](O)[C@H](O)[C@H](O3)C(O)=O)O)[C@H](O)[C@@H](CO)O2)NC(C)=O)[C@@H](C(O)=O)O1 YWIVKILSMZOHHF-QJZPQSOGSA-N 0.000 description 1
- 239000008223 sterile water Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K10/00—Body-drying implements; Toilet paper; Holders therefor
- A47K10/02—Towels
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/02—Methods of beating; Beaters of the Hollander type
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to a cotton milk moisturizing soft towel and a production process thereof, and belongs to the technical field of non-woven soft towels. The soft towel is formed by compounding modified cotton velvet fiber and silk extract, wherein the modified cotton velvet fiber takes cotton linter fiber as a matrix, is pulped under alkaline condition, the lipid on the fiber surface is removed to fully expose the fiber substrate, a large amount of active hydroxyl groups are generated, the silane coupling agent KH560 is utilized to hydrolyze and then is condensed with the hydroxyl groups in the cotton fiber, epoxy groups are grafted on the pretreated cotton velvet surface, the ring of the epoxy groups and amino groups on the silk extract molecular chain are opened under the initiation of quaternary ammonium salt, the silk extract is coated on the cotton fiber surface, the coarse texture of the cotton fiber surface is improved, the skin-friendly and fine touch feeling of the cotton fiber is endowed, and the good liquid-retaining capability is obtained by matching with a water thorn molding process.
Description
Technical Field
The invention belongs to the technical field of non-woven soft tissues, and particularly relates to a cotton-milk moisturizing soft tissue and a production process thereof.
Background
The towel repeatedly used for a long time is easy to breed a large amount of mites, and the towel can make the skin rough and pores large when used, especially has a great influence on sensitive skin and tender skin of infants, so the towel is gradually replaced by the soft towel; the soft towel includes wet and dry towel, face towel, soft towel, etc. and is produced with cotton, viscose, etc. fiber as material and through water jet process, etc. and through high pressure steam sterilizing treatment and cutting.
The cotton soft towel is made of 100% natural cotton fibers, has good water absorption and moisture retention capacity, is not easy to cause skin allergy, and is widely applied to products such as cosmetic cotton, face towel, mask base cloth and the like; however, cotton fibers are hard in texture and easy to wrinkle and deform, and are particularly applied to wet tissues, and in order to improve the moisture retention, the wet tissues are usually formed by hydroentanglement, so that the wiping touch feeling is poor; the application adopts silk to modify cotton fibers, and aims to prepare cotton soft tissues with softness and good touch feeling.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention aims to provide a cotton-milk moisturizing soft towel and a production process thereof.
The aim of the invention can be achieved by the following technical scheme:
the cotton milk moisturizing soft towel is formed by compounding modified cotton velvet fiber and silk extract; wherein the modified cotton linter fiber is prepared by the following method:
step A1: mixing cotton linter fibers with hydrogen peroxide, adding an alkaline ethanol solution, controlling the solid content to be 18-25%, stamping and pulping until the beating degree reaches 40 DEG SR, and filtering to obtain a filter cake to obtain pretreated cotton linters;
further, the pH value of the alkaline ethanol solution is 8.5-9.5, the mass fraction of ethanol is 5-8%, and the dosage ratio of the cotton linter fiber to the hydrogen peroxide is 100g:7-10mL, beating the cotton linter fiber in alkaline ethanol, removing lipid on the fiber surface to fully expose the fiber substrate, and generating a large amount of active hydroxyl groups on the surface.
Step A2: mixing a silane coupling agent KH560, magnesium oxide and water, heating to 45-55 ℃, carrying out mechanical stirring hydrolysis treatment at 120-150rpm for 2-3h, adding pretreated cotton velvet, applying ultrasonic dispersion, standing at a constant temperature of 35-40 ℃ for 8-10h, filtering to obtain a filter cake, and repeatedly washing with deionized water to obtain modified cotton velvet fibers;
further, the ratio of the amount of the pretreated cotton linters, the silane coupling agent KH560 and the magnesium oxide is 100g:25-32mL:1-2g, hydrolyzing a silane coupling agent KH560, condensing with active hydroxyl on the surface of the pretreated cotton linter, and grafting epoxy groups on the surface of the pretreated cotton linter.
The silk extract is prepared by the following method:
step B1: mixing tussah silk with sodium bicarbonate-ammonium carbonate mixed solution, heating to 60-70deg.C, repeatedly soaking and boiling for several times, filtering to obtain filter cake, and washing with water to obtain degummed silk;
further, the mass fraction of sodium bicarbonate in the sodium bicarbonate-ammonium carbonate mixed solution is 0.8-1.2%, the mass fraction of ammonium carbonate is 0.2-0.5%, and the solid-liquid ratio of tussah silk to the sodium bicarbonate-ammonium carbonate mixed solution is 1:20-30.
Step B2: dissolving calcium chloride in ethanol solution to obtain solution, adding degummed silk, soaking at 40-50deg.C for 5-8 hr, and heating to 80-100deg.C for 3-4 hr to obtain silk extract;
further, the mass fraction of calcium chloride in the solution is 6-10%, the mass fraction of ethanol is 15-20%, and the solid-liquid ratio of the degummed silk to the solution is 1:25-30.
The production process of the cotton milk moisturizing soft towel specifically comprises the following steps:
step S1: ultrasonically dispersing the modified cotton velvet fiber, quaternary ammonium salt-73 and sodium carbonate solution, adding silk extract, keeping the temperature at 40-50 ℃, and carrying out high-speed stirring treatment at 360-480rpm for 1.2-1.8 hours to obtain composite slurry;
further, the dosage ratio of the modified cotton velvet fiber, the silk extract and the quaternary ammonium salt-73 is 100g based on the absolute dry mass: 6.5-9.5g:0.2-0.3g.
Step S2: pulping and shaping the composite slurry to prepare a composite fiber net;
step S3: and (3) overlapping a plurality of layers of composite fiber net, reinforcing by water thorn, rinsing and drying to obtain the cotton emulsion moisturizing soft towel.
The invention has the beneficial effects that:
the invention relates to a cotton fiber/silk composite nonwoven soft towel, wherein cotton fiber takes cotton linter fiber as a matrix, pulps under alkaline condition, removes lipid on the fiber surface to fully expose fiber substrate, generates a large amount of active hydroxyl on the surface, hydrolyzes by using silane coupling agent KH560, condenses with hydroxyl in cotton fiber, grafts epoxy group on the pretreated linter surface, opens ring with amino on silk extract molecular chain under the initiation of quaternary ammonium salt, coats silk extract on the cotton fiber surface, improves coarse texture of the cotton fiber surface, gives fine touch feeling of the cotton fiber, and obtains good liquid retention capacity by matching with water jet molding process.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The embodiment prepares the cotton milk moisturizing soft towel, and the specific implementation process is as follows:
1) Preparation of modified lint fiber
a1, preparing an alkaline ethanol solution by adopting sodium hydroxide, controlling the mass fraction of ethanol to be 5%, controlling the pH value to be 8.5, mixing cotton linter fibers and hydrogen peroxide, adding the prepared alkaline ethanol solution, and adjusting the solid content of the cotton linter fibers to be 25%, wherein the dosage ratio of the cotton linter fibers to the hydrogen peroxide is 100g:7mL, the mixed solution is punched and beaten until the beating degree reaches 40 DEG SR, and a filter cake is filtered and taken, so that the pretreated cotton linter is obtained.
a2, taking a silane coupling agent KH560 and magnesium oxide, adding 35 times of water for mixing, heating to 45 ℃, applying 120rpm mechanical stirring for hydrolysis treatment for 3 hours, then adding pretreated cotton linters, applying 28kHz ultrasonic dispersion treatment for 20 minutes, keeping the temperature at 35 ℃, standing and soaking for 10 hours, wherein the dosage ratio of the pretreated cotton linters, the silane coupling agent KH560 and the magnesium oxide is 100g:25mL:1g, filtering to obtain a filter cake, and repeatedly washing and filtering twice with deionized water to obtain the modified cotton velvet fiber.
2) Preparation of silk extract
b1, adding water into sodium bicarbonate and ammonium carbonate to dissolve to prepare sodium bicarbonate-ammonium carbonate mixed solution, controlling the mass fraction of sodium bicarbonate to be 0.8%, controlling the mass fraction of ammonium carbonate to be 0.2%, and then taking tussah silk and sodium bicarbonate-ammonium carbonate mixed solution to be 1:20, heating to 70 ℃, repeatedly soaking and boiling twice, filtering to obtain a filter cake, and washing with water to obtain the degummed silk.
b2, dissolving calcium chloride in an ethanol solution, controlling the mass fraction of the calcium chloride to be 6% and the mass fraction of the ethanol to be 20%, obtaining a solution, and then mixing the degummed silk and the solution according to a solid-liquid ratio of 1:25, soaking at 40 deg.C for 8 hr, and heating to 80 deg.C for 4 hr to obtain silk extract.
3) Preparation of cotton milk moisturizing soft towel
s1, taking modified cotton velvet fiber and quaternary ammonium salt-73, adding a sodium carbonate solution with the mass fraction of 0.3% by mass, applying 40kHz ultrasonic dispersion for 15min, and then adding silk extract, wherein the dosage ratio of the raw materials to the modified cotton velvet fiber, the silk extract and the quaternary ammonium salt-73 is 100g in terms of absolute dry mass: 6.5g:0.2g, heating to 40 ℃ and keeping constant temperature, and carrying out high-speed stirring treatment for 1.8h by assisting with 360rpm to obtain composite slurry;
s2, spraying the composite slurry onto a filter screen through a slurry distributor, and pulping and shaping the composite slurry to obtain a composite fiber net;
and S3, stacking the three groups of composite fiber nets, performing water jet reinforcement by adopting a water jet loom with the aperture of 0.1mm and the water pressure of 60bar, rinsing with water, draining, placing in a drying oven, and drying at the temperature of 60 ℃ for 3 hours to obtain the cotton emulsion moisturizing soft towel.
Example 2
The embodiment prepares the cotton milk moisturizing soft towel, and the specific implementation process is as follows:
1) Preparation of modified lint fiber
a1, preparing an alkaline ethanol solution by adopting sodium hydroxide, controlling the mass fraction of ethanol to be 7%, controlling the pH value to be 9.0, mixing cotton linter fibers and hydrogen peroxide, adding the prepared alkaline ethanol solution, and adjusting the solid content of the cotton linter fibers to be 22%, wherein the dosage ratio of the cotton linter fibers to the hydrogen peroxide is 100g:9mL, the mixed solution is punched and beaten until the beating degree reaches 40 DEG SR, and a filter cake is filtered and taken, so that the pretreated cotton linter is obtained.
a2, taking a silane coupling agent KH560 and magnesium oxide, adding 40 times of water for mixing, heating to 50 ℃, applying 150rpm mechanical stirring for hydrolysis treatment for 2.8 hours, then adding pretreated cotton linters, applying 28kHz ultrasonic dispersion treatment for 20 minutes, keeping the temperature at 40 ℃, and standing and soaking for 9 hours, wherein the dosage ratio of the pretreated cotton linters, the silane coupling agent KH560 and the magnesium oxide is 100g:28mL:1.5g, filtering to obtain a filter cake, and repeatedly washing and filtering twice with deionized water to obtain the modified cotton velvet fiber.
2) Preparation of silk extract
b1, adding water into sodium bicarbonate and ammonium carbonate to dissolve to prepare sodium bicarbonate-ammonium carbonate mixed solution, controlling the mass fraction of sodium bicarbonate to be 0.9%, controlling the mass fraction of ammonium carbonate to be 0.4%, and then taking tussah silk and sodium bicarbonate-ammonium carbonate mixed solution to be 1:30, heating to 62 ℃, repeatedly soaking and boiling twice, filtering to obtain a filter cake, and washing with water to obtain the degummed silk.
b2, dissolving calcium chloride in an ethanol solution, controlling the mass fraction of the calcium chloride to be 8% and the mass fraction of the ethanol to be 15%, obtaining a solution, and then mixing the degummed silk and the solution according to a solid-liquid ratio of 1:30, soaking at 42 ℃ for 7h, and then heating to 90 ℃ for 3.5h to obtain the silk extract.
3) Preparation of cotton milk moisturizing soft towel
s1, taking modified cotton velvet fiber and quaternary ammonium salt-73, adding 8 times of sodium carbonate solution with mass fraction of 0.3%, applying 40kHz ultrasonic dispersion for 15min, and then adding silk extract, wherein the dosage ratio of the raw materials to the modified cotton velvet fiber, the silk extract and the quaternary ammonium salt-73 is 100g in terms of absolute dry mass: 8g:0.2g, heating to 50 ℃ and keeping constant temperature, and carrying out high-speed stirring treatment for 1.5h by 480rpm to obtain composite slurry;
s2, spraying the composite slurry onto a filter screen through a slurry distributor, and pulping and shaping the composite slurry to obtain a composite fiber net;
and S3, stacking the three groups of composite fiber nets, performing water jet reinforcement by adopting a water jet loom with the aperture of 0.1mm and the water pressure of 60bar, rinsing with water, draining, placing in a drying oven, and drying at the temperature of 60 ℃ for 3 hours to obtain the cotton emulsion moisturizing soft towel.
Example 3
The embodiment prepares the cotton milk moisturizing soft towel, and the specific implementation process is as follows:
1) Preparation of modified lint fiber
a1, preparing an alkaline ethanol solution by adopting sodium hydroxide, controlling the mass fraction of ethanol to be 8%, controlling the pH value to be 9.5, mixing cotton linter fibers and hydrogen peroxide, adding the prepared alkaline ethanol solution, and adjusting the solid content of the cotton linter fibers to be 18%, wherein the dosage ratio of the cotton linter fibers to the hydrogen peroxide is 100g:10mL, the mixed solution is punched and beaten until the beating degree reaches 40 DEG SR, and a filter cake is filtered and taken, so that the pretreated cotton linter is obtained.
a2, taking a silane coupling agent KH560 and magnesium oxide, adding 45 times of water for mixing, heating to 55 ℃, applying 150rpm mechanical stirring for hydrolysis treatment for 2 hours, then adding pretreated cotton linters, applying 28kHz ultrasonic dispersion treatment for 15 minutes, keeping the temperature at 40 ℃, standing and soaking for 8 hours, wherein the dosage ratio of the pretreated cotton linters, the silane coupling agent KH560 and the magnesium oxide is 100g:32mL: and 2g, filtering to obtain a filter cake, and repeatedly washing and filtering twice with deionized water to obtain the modified cotton velvet fiber.
2) Preparation of silk extract
b1, adding water into sodium bicarbonate and ammonium carbonate to dissolve to prepare sodium bicarbonate-ammonium carbonate mixed solution, controlling the mass fraction of sodium bicarbonate to be 1.2%, controlling the mass fraction of ammonium carbonate to be 0.5%, and then taking tussah silk and sodium bicarbonate-ammonium carbonate mixed solution to be 1:30, heating to 60 ℃, repeatedly soaking and boiling twice, filtering to obtain a filter cake, and washing with water to obtain the degummed silk.
b2, dissolving calcium chloride in an ethanol solution, controlling the mass fraction of the calcium chloride to be 10% and the mass fraction of the ethanol to be 15%, obtaining a solution, and then mixing the degummed silk and the solution according to a solid-liquid ratio of 1:30, soaking at constant temperature of 50 ℃ for 5 hours, and then heating to 100 ℃ for 3 hours to obtain the silk extract.
3) Preparation of cotton milk moisturizing soft towel
s1, taking modified cotton velvet fiber and quaternary ammonium salt-73, adding 8 times of sodium carbonate solution with mass fraction of 0.3%, applying 40kHz ultrasonic dispersion for 10min, and then adding silk extract, wherein the dosage ratio of the raw materials to the modified cotton velvet fiber, the silk extract and the quaternary ammonium salt-73 is 100g in terms of absolute dry mass: 9.5g:0.3g, heating to 50 ℃ and keeping constant temperature, and carrying out high-speed stirring treatment for 1.2h with the assistance of 480rpm to obtain composite slurry;
s2, spraying the composite slurry onto a filter screen through a slurry distributor, and pulping and shaping the composite slurry to obtain a composite fiber net;
and S3, stacking the three groups of composite fiber nets, performing water jet reinforcement by adopting a water jet loom with the aperture of 0.1mm and the water pressure of 60bar, rinsing with water, draining, placing in a drying oven, and drying at the temperature of 60 ℃ for 3 hours to obtain the cotton emulsion moisturizing soft towel.
Example 4
The embodiment prepares the cotton milk moisturizing soft towel, and the specific implementation process is as follows:
1) Preparation of modified lint fiber
a1, preparing an alkaline ethanol solution by adopting sodium hydroxide, controlling the mass fraction of ethanol to be 5%, controlling the pH value to be 9.5, mixing cotton linter fibers and hydrogen peroxide, adding the prepared alkaline ethanol solution, and adjusting the solid content of the cotton linter fibers to be 20%, wherein the dosage ratio of the cotton linter fibers to the hydrogen peroxide is 100g:8mL, the mixed solution is punched and beaten until the beating degree reaches 40 DEG SR, and a filter cake is filtered and taken, so that the pretreated cotton linter is obtained.
a2, taking a silane coupling agent KH560 and magnesium oxide, adding 45 times of water for mixing, heating to 45 ℃, applying 120rpm mechanical stirring for hydrolysis treatment for 2.5h, then adding pretreated cotton linters, applying 28kHz ultrasonic dispersion treatment for 20min, keeping the temperature at 38 ℃, and standing and soaking for 10h, wherein the dosage ratio of the pretreated cotton linters, the silane coupling agent KH560 and the magnesium oxide is 100g:30mL:1.4g, filtering to obtain a filter cake, and repeatedly washing and filtering twice with deionized water to obtain the modified cotton velvet fiber.
2) Preparation of silk extract
b1, adding water into sodium bicarbonate and ammonium carbonate to dissolve to prepare sodium bicarbonate-ammonium carbonate mixed solution, controlling the mass fraction of sodium bicarbonate to be 1.0%, controlling the mass fraction of ammonium carbonate to be 0.3%, and then taking tussah silk and sodium bicarbonate-ammonium carbonate mixed solution to be 1:20, heating to 70 ℃, repeatedly soaking and boiling twice, filtering to obtain a filter cake, and washing with water to obtain the degummed silk.
b2, dissolving calcium chloride in an ethanol solution, controlling the mass fraction of the calcium chloride to be 9% and the mass fraction of the ethanol to be 18%, obtaining a solution, and then mixing the degummed silk and the solution according to a solid-liquid ratio of 1:25, soaking at 40 deg.C for 7 hr, and heating to 100 deg.C for 3.5 hr to obtain silk extract.
3) Preparation of cotton milk moisturizing soft towel
s1, taking modified cotton velvet fiber and quaternary ammonium salt-73, adding 8 times of sodium carbonate solution with mass fraction of 0.3%, applying 40kHz ultrasonic dispersion for 15min, and then adding silk extract, wherein the dosage ratio of the raw materials to the modified cotton velvet fiber, the silk extract and the quaternary ammonium salt-73 is 100g in terms of absolute dry mass: 9g:0.3g, heating to 50 ℃ and keeping constant temperature, and carrying out high-speed stirring treatment for 1.6h by assisting with 360rpm to obtain composite slurry;
s2, spraying the composite slurry onto a filter screen through a slurry distributor, and pulping and shaping the composite slurry to obtain a composite fiber net;
and S3, stacking the three groups of composite fiber nets, performing water jet reinforcement by adopting a water jet loom with the aperture of 0.1mm and the water pressure of 60bar, rinsing with water, draining, placing in a drying oven, and drying at the temperature of 60 ℃ for 3 hours to obtain the cotton emulsion moisturizing soft towel.
The cotton milk moisturizing soft tissues prepared in examples 1 to 4 were cut into 200×200mm specimens with reference to FZ/T01054.1-1999, and the fabrics were subjected to style test at 20 ℃ and 65% humidity, with specific data shown in tables 1 to 2:
TABLE 1
| Bending stiffness/(cN cm) 2 ·cm -1 ) | Bending hysteresis distance/(cN.cm.cm) -1 ) | |
| Example 1 | 0.0105 | 0.0145 |
| Example 2 | 0.0114 | 0.0163 |
| Example 3 | 0.0127 | 0.0157 |
| Example 4 | 0.0115 | 0.0148 |
As can be seen from the bending test results of the soft towel in Table 1, the soft towel prepared by the invention has good softness and good shape retention effect.
TABLE 2
As can be seen from the friction test results of the soft towel in Table 2, the soft towel prepared by the invention has uniform surface roughness and fine texture.
The cotton milk moisturizing soft tissues prepared in examples 1 to 4 were cut into test pieces with the specification of 250×100mm, and the test pieces were subjected to a liquid retention test by the following specific test methods:
preparing emulsion: taking aloe extract, glycerol, sodium hyaluronate and sterile water according to the mass ratio of 1:0.2:0.05:8, uniformly mixing, and vacuum defoaming to prepare a moisturizing emulsion;
immersion liquid: placing the sample in a vacuum box, vacuumizing to 20kPa, introducing moisturizing emulsion, standing for 30min, taking out the sample, and standing on a filter screen for 1h;
the weight of the sample before immersion was measured and recorded as m 0 The weight after immersion of the sample was denoted by m 1 ， The specific test results are shown in table 3:
TABLE 3 Table 3
| Example 1 | Example 2 | Example 3 | Example 4 | |
| Liquid retention rate/% | 1239 | 1252 | 1304 | 1284 |
As can be seen from the data in Table 3, the soft towel prepared by the invention has good liquid retention capacity on the emulsion.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.
Claims (6)
1. The cotton milk moisturizing soft towel is characterized by being formed by compounding modified cotton velvet fiber and silk extract;
the modified cotton velvet fiber is prepared by the following method:
step A1: mixing cotton linter fibers with hydrogen peroxide, adding an alkaline ethanol solution, controlling the solid content to be 18-25%, punching and pulping until the beating degree reaches 40 DEG SR, and filtering to obtain a filter cake to obtain pretreated cotton linters;
step A2: mixing a silane coupling agent KH560, magnesium oxide and water, heating to 45-55 ℃, stirring and hydrolyzing for 2-3h, adding pretreated cotton velvet, applying ultrasonic dispersion, standing at a constant temperature of 35-40 ℃ for 8-10h, filtering to obtain a filter cake, and repeatedly washing with deionized water to obtain modified cotton velvet fibers;
the silk extract is prepared by the following method:
step B1: mixing tussah silk with sodium bicarbonate-ammonium carbonate mixed solution, heating to 60-70deg.C, repeatedly soaking and boiling for several times, filtering to obtain filter cake, and washing with water to obtain degummed silk;
step B2: dissolving calcium chloride in ethanol solution to obtain solution, adding degummed silk, soaking at 40-50deg.C for 5-8 hr, and heating to 80-100deg.C for 3-4 hr to obtain silk extract;
the production process of the cotton milk moisturizing soft towel comprises the following steps:
step S1: ultrasonically dispersing the modified cotton velvet fiber, quaternary ammonium salt-73 and sodium carbonate solution, adding silk extract, keeping the temperature at 40-50 ℃, and carrying out high-speed stirring treatment at 360-480rpm for 1.2-1.8 hours to obtain composite slurry;
step S2: pulping and shaping the composite slurry to prepare a composite fiber net;
step S3: and (3) overlapping a plurality of layers of composite fiber net, reinforcing by water thorn, rinsing and drying to obtain the cotton emulsion moisturizing soft towel.
2. The cotton milk moisturizing soft towel according to claim 1, wherein the pH value of the alkaline ethanol solution is 8.5-9.5, the mass fraction of ethanol is 5-8%, and the dosage ratio of cotton linter fibers to hydrogen peroxide is 100g:7-10mL.
3. The cotton milk moisturizing soft towel according to claim 2, wherein the ratio of the pretreated cotton linters, the silane coupling agent KH560 and the magnesium oxide is 100g:25-32mL:1-2g.
4. The cotton milk moisturizing soft towel according to claim 1, wherein the mass fraction of sodium bicarbonate in the sodium bicarbonate-ammonium carbonate mixed solution is 0.8-1.2%, the mass fraction of ammonium carbonate is 0.2-0.5%, and the solid-to-liquid ratio of tussah silk to the sodium bicarbonate-ammonium carbonate mixed solution is 1:20-30.
5. The cotton milk moisturizing soft towel according to claim 4, wherein the mass fraction of calcium chloride in the solution is 6-10%, the mass fraction of ethanol is 15-20%, and the solid-to-liquid ratio of the degummed silk to the solution is 1:25-30.
6. The cotton milk moisturizing soft towel according to claim 1, wherein the dosage ratio of the modified cotton linter fiber, the silk extract and the quaternary ammonium salt-73 is 100g:6.5-9.5g:0.2-0.3g.
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