CN113186619A - Artificial fiber cosmetic silk, preparation method thereof and cosmetic brush - Google Patents
Artificial fiber cosmetic silk, preparation method thereof and cosmetic brush Download PDFInfo
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- CN113186619A CN113186619A CN202110534519.8A CN202110534519A CN113186619A CN 113186619 A CN113186619 A CN 113186619A CN 202110534519 A CN202110534519 A CN 202110534519A CN 113186619 A CN113186619 A CN 113186619A
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- 239000002537 cosmetic Substances 0.000 title claims abstract description 104
- 229920002994 synthetic fiber Polymers 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 86
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 81
- 240000008042 Zea mays Species 0.000 claims abstract description 61
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims abstract description 61
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims abstract description 61
- 235000005822 corn Nutrition 0.000 claims abstract description 61
- 239000010902 straw Substances 0.000 claims abstract description 56
- 239000002245 particle Substances 0.000 claims abstract description 41
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 40
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 34
- 239000004626 polylactic acid Substances 0.000 claims abstract description 34
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 18
- 229920006173 natural rubber latex Polymers 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 239000000944 linseed oil Substances 0.000 claims abstract description 12
- 235000021388 linseed oil Nutrition 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 8
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 5
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 5
- 229920001194 natural rubber Polymers 0.000 claims abstract description 5
- 238000005491 wire drawing Methods 0.000 claims abstract description 5
- 238000001746 injection moulding Methods 0.000 claims abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 48
- 229920000297 Rayon Polymers 0.000 claims description 24
- 239000002964 rayon Substances 0.000 claims description 24
- 239000000243 solution Substances 0.000 claims description 21
- 239000003513 alkali Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000002791 soaking Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 claims description 3
- 239000011363 dried mixture Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 239000000839 emulsion Substances 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 235000010215 titanium dioxide Nutrition 0.000 description 35
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 12
- 238000012360 testing method Methods 0.000 description 11
- 230000015556 catabolic process Effects 0.000 description 8
- 238000006731 degradation reaction Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 210000002268 wool Anatomy 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 238000001782 photodegradation Methods 0.000 description 4
- 241001465754 Metazoa Species 0.000 description 3
- 238000006065 biodegradation reaction Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920000874 polytetramethylene terephthalate Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- 241000186361 Actinobacteria <class> Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- 229920003232 aliphatic polyester Polymers 0.000 description 1
- 239000003674 animal food additive Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- UQLDLKMNUJERMK-UHFFFAOYSA-L di(octadecanoyloxy)lead Chemical compound [Pb+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O UQLDLKMNUJERMK-UHFFFAOYSA-L 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000289 melt material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 239000004482 other powder Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000003381 solubilizing effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 239000001038 titanium pigment Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D1/00—Bristles; Selection of materials for bristles
- A46D1/02—Bristles details
- A46D1/0215—Bristles characterised by the material being biodegradable
-
- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/02—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from cellulose, cellulose derivatives, or proteins
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/18—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from other substances
Abstract
The application relates to the field of cosmetic tools, and particularly discloses an artificial fiber cosmetic silk, a preparation method thereof and a cosmetic brush. The artificial fiber cosmetic silk is prepared from the following raw materials in parts by weight: 120-230 parts of polylactic acid particles, 10-25 parts of corn straw powder, 5-10 parts of natural rubber latex, 5-10 parts of powder particles, 4-10 parts of silane coupling agent and 1-4 parts of epoxidized linseed oil; wherein the powder particles comprise at least one of titanium dioxide and binchotan powder; the preparation method comprises the following steps: the method comprises the steps of modifying corn straw powder by using a silane coupling agent and epoxidized linseed oil, and then carrying out melt blending on the corn straw powder, polylactic acid particles, natural rubber emulsion and powder particles, and then carrying out injection molding and wire drawing to obtain the artificial fiber cosmetic silk. The application of artificial fiber cosmesis silk can be used to the cosmetic brush, and it has when guaranteeing cosmetic brush service function, is favorable to environmental protection advantage.
Description
Technical Field
The present application relates to the field of cosmetic tools, and more particularly, to a rayon cosmetic yarn, a method of preparing the same, and a cosmetic brush.
Background
The cosmetic brush is one of the most common cosmetic tools in the field of makeup, and comprises a brush body and a brush head, wherein the brush head is composed of cosmetic filaments, and the brush head is used for dipping cosmetics and applying the cosmetics to a makeup part during makeup so as to finish makeup.
The main raw materials of the cosmetic filaments in the cosmetic brush are artificial wool fibers and animal wool fibers, and the animal wool fibers are used in large quantity without using harmony between human beings and animals, so the demand of the artificial wool fibers is gradually increased.
The main component of the artificial wool cosmetic yarn is poly (tetramethylene terephthalate) (PBT, PBTP or PTMT for short), but the product has low degradation degree, can not be degraded by various degradation modes such as biodegradation, water degradation, landfill degradation and the like, and can exist for a long time under a ground cover, so the artificial wool cosmetic yarn is easy to cause environmental pollution and does not accord with the environmental protection concept.
In view of the related art, the inventors consider that it is important to develop a cosmetic thread which is easily degradable.
Disclosure of Invention
In order to reduce the pollution of the cosmetic filaments to the environment, the application provides the artificial fiber cosmetic filaments, the preparation method thereof and a cosmetic brush.
In a first aspect, the present application provides a rayon cosmetic filament, which adopts the following technical scheme:
the artificial fiber cosmetic silk is prepared from the following raw materials in parts by weight: 120-230 parts of polylactic acid particles, 10-25 parts of corn straw powder, 5-10 parts of natural rubber latex, 5-10 parts of powder particles, 4-10 parts of silane coupling agent and 1-4 parts of epoxidized linseed oil; wherein the powder particles comprise at least one of titanium dioxide and binchotan powder.
By adopting the technical scheme, the polylactic acid has wide sources, can be degradable aliphatic polyester which takes renewable crops as synthetic raw materials and has good biocompatibility, mechanical property, thermal property and the like, and on the other hand, the waste polylactic acid product can be degraded into CO in the nature2And H2O, which can reduce the pollution to the environment, and the polylactic acid is used as the raw material to prepare the artificial fiber cosmetic silk, which is beneficial to the environmental protection, but the polylactic acidThe material has the defects of high brittleness and poor toughness, and the artificial fiber cosmetic brush prepared by polylactic acid is easy to break.
The corn straw contains abundant cellulose, the natural rubber latex has excellent toughness, biocompatibility and biodegradability, the corn straw powder, the natural rubber latex and polylactic acid are melted and blended to prepare the artificial fiber cosmetic silk, the cellulose in the corn straw improves the mechanical strength of the artificial fiber cosmetic silk, the natural rubber latex improves the toughness of the artificial fiber cosmetic silk, the silane coupling agent plays a solubilizing role, the epoxidized linseed oil can play a plasticizing role and can interact with a polylactic acid molecular chain and a hydroxyl group of a lignin end group in the corn straw, and the overall performance of the artificial fiber cosmetic silk is improved. Titanium dioxide, prepared long carbon powder and other powder particles are dispersed in a polylactic acid system, and the powder particles are attached to the periphery of the rayon cosmetic silk after wire drawing forming, so that the roughness of the cosmetic silk is increased, and the powder grabbing capacity is improved.
Polylactic acid, corn stalk and natural rubber latex are all degradable materials, the prepared artificial fiber cosmetic silk is easy to degrade, the degradation product has low pollution to the environment and is beneficial to environmental protection, and the overall performance of the artificial fiber cosmetic silk is improved in the composite powder particles, the silane coupling agent and the epoxidized linseed oil.
Preferably, the feed additive is prepared from the following raw materials in parts by weight: 200 parts of polylactic acid particles, 12-18 parts of corn straw powder, 6-8 parts of natural rubber, 6-8 parts of powder particles, 5-8 parts of silane coupling agent and 2-3 parts of epoxidized linseed oil.
By adopting the technical scheme, the raw material ratio is optimized, and the overall performance of the artificial fiber cosmetic silk is further improved.
Preferably, the corn straw powder is subjected to alkali treatment, and the preparation method comprises the following steps: adding the corn straw powder into a sodium hydroxide solution with the mass concentration of 3-5%, wherein the weight ratio of the corn straw powder to the sodium hydroxide solution is 1: (2-4), soaking for 2-3h, washing with water, filtering to neutrality, and drying at the temperature of 100-110 ℃ for 22-24h to obtain the alkali-treated corn straw powder.
By adopting the technical scheme, some non-cellulose components in the corn straws can be removed by alkali treatment, the binding capacity between the corn straws and the polylactic acid and natural rubber latex is improved, and the tensile strength and the bending strength of the artificial fiber cosmetic silk are favorably improved.
Preferably, the titanium dioxide is lipophilic titanium dioxide.
By adopting the technical scheme, the lipophilic cosmetic grade titanium dioxide has stable chemical properties, overcomes the defects of difficult dispersion, easy precipitation and the like of the common titanium dioxide in a polylactic acid dispersion system, ensures that the titanium dioxide is dispersed in the polylactic acid system more uniformly, and is favorable for improving the powder grabbing capacity of a cosmetic brush.
Preferably, the weight ratio of the titanium dioxide to the binchotan powder in the powder particles is 1: (1.8-4).
By adopting the technical scheme, the titanium dioxide and the prepared long carbon powder are uniformly dispersed in the polylactic acid system, so that the surface roughness of the rayon cosmetic filaments is increased, and the powder-grabbing capacity of the cosmetic brush is improved; in addition, compared with titanium dioxide, the prepared long carbon powder has stronger adsorption capacity, and the proportion of the titanium dioxide to the prepared long carbon powder is adjusted, so that the powder grabbing capacity is improved.
Preferably, the particle size of the titanium dioxide is 1-3 μm.
By adopting the technical scheme, the artificial fiber cosmetic silk prepared from the titanium dioxide within the particle size range has better powder-grabbing capacity.
Preferably, the particle size of the binchotan powder is 6-8 μm.
By adopting the technical scheme, the gradation between the prepared long carbon powder with the particle size and the titanium dioxide is better, and the prepared artificial fiber cosmetic silk has better performance.
In a second aspect, the application provides a preparation method of rayon cosmetic filaments, which adopts the following technical scheme: a preparation method of rayon cosmetic filaments comprises the following steps:
s1, dissolving a silane coupling agent in absolute ethyl alcohol to prepare a silane coupling agent solution, and uniformly mixing the silane coupling agent solution, corn straw powder and epoxidized linseed oil to obtain a mixture A;
s2, drying the mixture A and the polylactic acid particles for 6-8h at the temperature of 80-90 ℃;
s3, mixing the dried mixture A, the polylactic acid particles, the natural rubber latex and the powder particles, and carrying out melt blending at the temperature of 180-200 ℃ to obtain a smelting product;
and S4, carrying out injection molding and wire drawing molding on the smelted product to obtain the artificial fiber cosmetic silk.
By adopting the technical scheme, the corn straw powder is mixed with the modifier to modify the corn straw powder, and then the modified corn straw powder is melted and blended with the polylactic acid and the natural rubber emulsion, so that the bonding force between the corn straw powder and a polylactic acid system is favorably improved.
In a third aspect, the present application provides a cosmetic brush, which adopts the following technical solution:
the bristles of the cosmetic brush are made of the rayon cosmetic filament according to any one of claims 1 to 7.
By adopting the technical scheme, the cosmetic brush with high degradability and superior performance is prepared, and the using function of the cosmetic brush is ensured, and meanwhile, the environmental protection is facilitated.
In summary, the present application has the following beneficial effects:
1. because the artificial fiber cosmetic filament is prepared by melting and blending the polylactic acid, the corn straw and the natural rubber emulsion material, the photodegradation rate of the prepared artificial fiber cosmetic filament is 36.5-39.5% in 2 months, the biodegradation rate is 63.5-65.5%, the tensile strength is 54.3-56.8MPa, and the bending strength is 81.6-85.5MPa, the prepared artificial fiber cosmetic filament cannot have excellent performance, is good in degradability, and is beneficial to environmental protection while ensuring the excellent service performance of the artificial fiber filament;
2. in the application, the powder-holding capacity of the cosmetic brush is improved by adding the titanium dioxide and the prepared long carbon powder into the artificial fiber cosmetic filaments, the powder-holding amount of the prepared cosmetic brush is 0.590-0.659g, the powder-holding amount of the cosmetic brush prepared by independently adding the titanium dioxide is 0.590g, the powder-holding amount of the cosmetic brush prepared by independently adding the prepared long carbon powder is 0.593g, and the powder-holding amount of the cosmetic brush prepared by matching the titanium dioxide and the prepared long carbon powder is 0.601-0.659 g.
Detailed Description
The present application will be described in further detail with reference to examples.
Examples of preparation of raw materials and/or intermediates
Raw materials
Polylactic acid granules, available from guan general plastics materials ltd, cat No. 3251D;
pulverizing corn stalk powder, sieving with 300 μm molecular sieve, and collecting oversize;
natural rubber latex available from jonan fan chemical industries, ltd;
titanium dioxide, hydrophilic titanium dioxide and lipophilic titanium dioxide, which are purchased from Shanghai cooperative industry Co., Ltd;
preparing Changchuang powder purchased from Guangzhou Xinzhilian cosmetics Co., Ltd;
silane coupling agent, namely KH550, which is purchased from Shandong Liang New Material science and technology Co;
epoxidized linseed oil, purchased from pool state Kailong import & export commerce Limited.
Preparation example
Preparation example 1
The preparation method of the alkali-treated corn straw powder comprises the following steps:
adding the corn straw powder into a sodium hydroxide solution with the mass concentration of 3%, wherein the weight ratio of the corn straw powder to the sodium hydroxide solution is 1: 4, soaking for 2h, washing with water, filtering to neutrality, and then drying for 22h at the temperature of 110 ℃ to obtain the alkali-treated corn straw powder.
Preparation example 2
The preparation method of the alkali-treated corn straw powder comprises the following steps:
adding the corn straw powder into a sodium hydroxide solution with the mass concentration of 4%, wherein the weight ratio of the corn straw powder to the sodium hydroxide solution is 1: 3, soaking for 2.5h, washing with water, filtering to be neutral, and then drying for 22h at the temperature of 110 ℃ to obtain the alkali-treated corn straw powder.
Preparation example 3
The preparation method of the alkali-treated corn straw powder comprises the following steps:
adding the corn straw powder into a sodium hydroxide solution with the mass concentration of 5%, wherein the weight ratio of the corn straw powder to the sodium hydroxide solution is 1: 2, soaking for 3 hours, washing with water, filtering to be neutral, and then drying for 22 hours at the temperature of 110 ℃ to obtain the alkali-treated corn straw powder.
Preparation example 4
The preparation method of the alkali-treated corn straw powder comprises the following steps:
adding the corn straw powder into a sodium hydroxide solution with the mass concentration of 4%, wherein the weight ratio of the corn straw powder to the sodium hydroxide solution is 1: 3, soaking for 2.5h, washing with water, filtering to be neutral, and then drying for 24h at the temperature of 100 ℃ to obtain the alkali-treated corn straw powder.
Preparation example 5
The preparation method of the alkali-treated corn straw powder comprises the following steps:
adding the corn straw powder into a sodium hydroxide solution with the mass concentration of 4%, wherein the weight ratio of the corn straw powder to the sodium hydroxide solution is 1: 3, soaking for 2.5h, washing with water, filtering to be neutral, and then drying for 23h at 105 ℃ to obtain the alkali-treated corn straw powder.
Examples
Example 1
A rayon cosmetic silk is prepared by the following steps:
s1, mixing 10kg of silane coupling agent with absolute ethyl alcohol, preparing a silane coupling agent solution with the mass concentration of 5%, and uniformly mixing the silane coupling agent solution with 10kg of corn straw powder and 1kg of epoxidized linseed oil to obtain a mixture A;
s2, drying the mixture A and 230kg of polylactic acid particles at 85 ℃ for 7 h;
s3, mixing the dried mixture A, the polylactic acid particles, 10kg of natural rubber latex, 1.25kg of titanium dioxide and 3.75kg of prepared long carbon powder, and carrying out melt blending at 190 ℃ to obtain a smelting product; wherein the titanium dioxide is lipophilic titanium dioxide, the particle size of the titanium dioxide is 1-3 μm, and the particle size of the binchotan powder is 6-8 μm.
And S4, carrying out injection molding and wire drawing molding on the smelted product to obtain the artificial fiber cosmetic silk.
Examples 2 to 9
Different from the example 1, the mixture ratio of the raw materials is different, and the details are shown in the table 1.
TABLE 1 EXAMPLES 1-9 raw materials proportioning Table (kg)
Example 10
Unlike example 3, mixture a and polylactic acid particles were dried at 80 ℃ for 8 hours in step S2; the melt blending temperature of the raw materials in step S3 was 180 ℃.
Example 11
Unlike example 3, mixture a and polylactic acid particles were dried at 90 ℃ for 6 hours in step S2; the melt blending temperature of the raw materials in step S3 was 200 ℃.
Examples 12 to 16
In contrast to example 3, the alkali-treated corn straw powders from preparation examples 1 to 5 were each replaced by the same amount of the alkali-treated corn straw powder.
Example 17
Different from the example 13, the lipophilic titanium dioxide is replaced by the same amount of hydrophilic titanium dioxide.
Examples 18 to 23
Different from the embodiment 13, the proportion of the titanium pigment and the prepared long carbon powder is different, and the details are shown in the table 2.
TABLE 2 example 18-23 titanium dioxide to spare Long carbon powder ratio (kg)
| Example 13 | Example 18 | Example 19 | Example 20 | Example 21 | Example 22 | Example 23 | |
| Titanium white powder | 1.75 | 2.5 | 1.4 | 4.5 | 5.6 | 7 | 0 |
| Preparing long carbon powder | 5.25 | 4.5 | 5.6 | 2.5 | 1.4 | 0 | 7 |
Examples 24 to 25
Different from the embodiment 13, the particle size of the titanium dioxide is 0.2 to 0.5 μm and 3.5 to 5 μm respectively.
Examples 26 to 27
Different from the embodiment 13, the grain sizes of the prepared long carbon powders are 2 to 4 μm and 9 to 11 μm, respectively.
Comparative example
Comparative example 1
60kg of polylactic acid, 20kg of PA6 and 20kg of PBT are mixed and ground to obtain powder with the granularity of 1000-1500 meshes, and the powder is baked for 2.5 hours at the temperature of 115 ℃ to obtain a mixture. Based on the mass sum of the 3 raw materials, 2% of epoxidized soybean oil, 5% of lead stearate, 5% of tin oxide, 3% of sodium hydroxide and 3% of polyethylene are added, and the mixture is melted and blended for 3 hours at 235 ℃ to obtain a melt material. Putting the melted material into a cosmetic silk production line, extruding and drawing to obtain a monofilament with the silk diameter of 0.03-0.12 mm, soaking in water at the water temperature of 25 ℃ for 3min to obtain a cooled and formed monofilament, and mechanically trimming to obtain a trimmed monofilament; placing the trimmed monofilaments into a 9% sodium hydroxide aqueous solution, and carrying out oxidation treatment at 100 ℃ for 25min to obtain oxidized monofilaments; then cleaning with clear water, drying and finishing to obtain the cosmetic silk.
Comparative example 2
Different from example 3, the corn straw powder was replaced by an equal amount of the natural rubber latex.
Comparative example 3
Different from example 3, the natural rubber latex was replaced with an equal amount of corn straw powder.
Comparative example 4
Different from the embodiment 3, the addition amount of the titanium dioxide and the prepared long carbon powder is 0.
Application example
Application examples 1 to 31 cosmetic brushes were made using the rayon cosmetic filaments from examples 1 to 27 and comparative examples 1 to 4.
Performance test
Detection method/test method
Degradability test, the rayon cosmetic filaments prepared in examples 1 to 27 and comparative examples 1 to 4 were subjected to degradation treatment according to both photodegradation and biodegradation, and the test results were recorded, as shown in table 3.
And (3) photo-degradation test: the method comprises the steps of taking 10g of the artificial fiber cosmetic silk, conducting a test combining outdoor natural exposure and artificial light source exposure, conducting natural exposure when the sunlight is sufficient, conducting exposure by adopting an artificial light source (xenon arc lamp light source exposure or fluorescent purple lamp light source exposure) when the sunlight is weak, conducting continuous treatment for 2 months with 24h as a cycle, weighing the artificial fiber cosmetic silk, and marking the artificial fiber cosmetic silk as M1, wherein the degradation rate is (10g-M1)/10g 100%. In the artificial light source exposure, a xenon arc lamp light source exposure test is executed according to the standard GB9344-1988, and a fluorescent purple lamp light source exposure test is executed according to the standard GB/T16422.4-1996.
And (3) microbial degradation test: burying 10g of cosmetic filaments in 10cm thick soil containing mould, yeast, actinomycetes, bacteria and abundant carbohydrate at 20-45 deg.C and pH of 4, and making aerobic atmosphere. After 2 months, the rayon cosmetic filaments were weighed as M2 and had a degradation rate of (10g-M2)/10g x 100%.
The rayon cosmetic filaments obtained in examples 1 to 27 and comparative examples 1 to 4 were tested for tensile strength and flexural strength in accordance with GB/T1040-2006 GB/T9341-2008, and the test results are shown in Table 3.
TABLE 3 results of Performance test of examples 1 to 27 and comparative examples 1 to 4
And (3) testing powder grabbing capacity: the net weight of the cosmetic brushes in application examples 1 to 31 and the weight of the sticky powder-adhered cosmetic brush were weighed, and the amount of sticky powder in the brush was calculated, i.e., the weight of the sticky powder-adhered cosmetic brush-the net weight of the cosmetic brush, and the test results are shown in table 4.
TABLE 4 application examples 1-31 powder pick test results (g)
As can be seen by combining examples 1 to 27 and comparative example 1 with Table 3, the rayon cosmetic threads obtained in examples 1 to 27 are superior in all of photodegradation, biodegradability, tensile strength, and flexural strength to those of the cosmetic thread obtained in comparative example 1; as can be seen from the combination of application examples 1 to 28 and Table 4, the cosmetic brushes of application examples 1 to 27 have superior powder-grasping ability to the cosmetic brush of application example 1. The artificial fiber cosmetic silk prepared by the method is better in overall performance, and is easier to degrade.
It can be seen from the combination of examples 3, 6 to 9 and comparative examples 2 to 3 and table 1 that the artificial fiber cosmetic filament prepared by melt blending of the corn straw powder, the natural rubber latex and the polylactic acid can improve the tensile strength and the bending strength of the artificial fiber cosmetic filament, overcome the defects of polylactic acid particles, and the corn straw powder and the natural rubber latex have better effects than the corn straw powder and the natural rubber latex are used alone, and the raw material ratio in example 3 is better.
Combining example 3, examples 10-11 and table 3, it can be seen that the process for making rayon cosmetic filaments in example 3 is optimal.
In combination with example 3, examples 12 to 16 and table 3, it can be seen that the artificial fiber cosmetic filaments prepared by alkali treatment of the corn stalk powder have better tensile strength and bending strength, and the alkali treatment method in preparation example 2 is more preferable, probably because the alkali treatment can remove part of non-cellulose components in the corn stalk, and enhance the binding ability of the corn stalk with polylactic acid and natural rubber latex.
By combining the examples 12, 18-27, and 4 and combining the table 3, it can be seen that the particle sizes of the titanium dioxide and the long carbon powder and the proportion of the titanium dioxide and the long carbon powder have no obvious influence on the tensile strength and the bending strength of the rayon cosmetic filaments; in combination with application example 12, application examples 18 to 27, application example 31, and table 4, it can be seen that the addition of titanium dioxide and prepared long carbon powder can enhance the powder-grasping ability of the cosmetic brush, and the powder-grasping ability has a direct relationship with the particle size of titanium dioxide and prepared long carbon powder and the proportion of the titanium dioxide and prepared long carbon powder.
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 (9)
1. The rayon cosmetic filament is characterized by being prepared from the following raw materials in parts by weight: 120-230 parts of polylactic acid particles, 10-25 parts of corn straw powder, 5-10 parts of natural rubber latex, 5-10 parts of powder particles, 4-10 parts of silane coupling agent and 1-4 parts of epoxidized linseed oil; wherein the powder particles comprise at least one of titanium dioxide and binchotan powder.
2. The rayon cosmetic filament according to claim 1, wherein: the composition is prepared from the following raw materials in parts by weight: 200 parts of polylactic acid particles, 12-18 parts of corn straw powder, 6-8 parts of natural rubber, 6-8 parts of powder particles, 5-8 parts of silane coupling agent and 2-3 parts of epoxidized linseed oil.
3. The rayon cosmetic filament according to claim 1, wherein: the corn straw powder is subjected to alkali treatment, and the preparation method comprises the following steps: adding the corn straw powder into a sodium hydroxide solution with the mass concentration of 3-5%, wherein the weight ratio of the corn straw powder to the sodium hydroxide solution is 1: (2-4), soaking for 2-3h, washing with water, filtering to neutrality, and drying at the temperature of 100-110 ℃ for 22-24h to obtain the alkali-treated corn straw powder.
4. The rayon cosmetic filament according to claim 1, wherein: the titanium dioxide is lipophilic titanium dioxide.
5. The rayon cosmetic filament according to claim 1, wherein: the weight ratio of the titanium dioxide to the binchotan powder in the powder particles is 1: (1.8-4).
6. The rayon cosmetic filament according to claim 1, wherein: the particle size of the titanium dioxide is 1-3 μm.
7. The rayon cosmetic filament according to claim 6, wherein: the grain diameter of the binchotan powder is 6-8 mu m.
8. A method for preparing rayon cosmetic filaments according to any one of claims 1 to 7, comprising: the method comprises the following steps:
s1, dissolving a silane coupling agent in absolute ethyl alcohol to prepare a silane coupling agent solution, and uniformly mixing the silane coupling agent solution, corn straw powder and epoxidized linseed oil to obtain a mixture A;
s2, drying the mixture A and the polylactic acid particles for 6-8h at the temperature of 80-90 ℃;
s3, mixing the dried mixture A, the polylactic acid particles, the natural rubber latex and the powder particles, and carrying out melt blending at the temperature of 180-200 ℃ to obtain a smelting product;
and S4, carrying out injection molding and wire drawing molding on the smelted product to obtain the artificial fiber cosmetic silk.
9. A cosmetic brush characterized by: the bristles of the cosmetic brush are made of the rayon cosmetic filament according to any one of claims 1 to 7.
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