CN112267166A - Tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria and preparation method of tea fiber - Google Patents
Tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria and preparation method of tea fiber Download PDFInfo
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- CN112267166A CN112267166A CN202011158029.4A CN202011158029A CN112267166A CN 112267166 A CN112267166 A CN 112267166A CN 202011158029 A CN202011158029 A CN 202011158029A CN 112267166 A CN112267166 A CN 112267166A
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- 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
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- 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
- D01F1/07—Addition of substances to the spinning solution or to the melt for making fire- or flame-proof filaments
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- 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
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- 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
- D01F1/103—Agents inhibiting growth of microorganisms
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Abstract
The invention discloses a tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria and a preparation method thereof, wherein the tea fiber consists of the following substances in parts by weight: 40-60 parts of tea extract, 20-40 parts of polylactic acid, 40-60 parts of coupling agent, 20-40 parts of bamboo charcoal powder, 20-40 parts of diatomite, 40-60 parts of plasticizer, 40-50 parts of pentaerythritol stearate and 40-60 parts of fiber matrix, and then the tea fiber is prepared by granulation and spinning. The tea fiber prepared by the invention has the characteristics of strong and durable antibacterial property, and also has flame resistance, degradability and good mechanical property.
Description
Technical Field
The invention relates to the field of materials, in particular to a tea fiber which is rich in tea polyphenol and can protect skin and resist bacteria and a preparation method thereof.
Background
With the development of society and the improvement of living standard of people, green consumption and environment-friendly products become the mainstream of life, and especially in textiles, the comfort is pursued, and higher requirements are also provided for the functions of nature, bacteriostasis, moisture absorption, ventilation, health care and the like. The tea fiber can meet the requirements of people.
China is a tea great country, and since ancient times, the traditional tea drinking health care method has the tradition, and biochemical and medical researches prove that about 450 organic compounds and no less than 15 inorganic mineral nutrient elements are contained in the tea, so that the tea has both nutritive value and pharmacological action on a human body. Tea polyphenol is a compound of polyhydroxy phenolic compounds in tea, consists of more than 30 phenolic substances, and is a main chemical component with a health care function in tea. The tea polyphenols have various physiological activities of resisting oxidation, preventing radiation, resisting aging, reducing blood lipid, reducing blood sugar, inhibiting bacteria and inhibiting enzyme, etc. Tea polyphenols as excellent additive for cosmetics and daily necessities can prevent and treat skin diseases, skin allergy, skin pigment removal and wrinkle resistance, and prevent dental caries, dental plaque, periodontitis, halitosis, etc. Meanwhile, the sun-proof and sun-proof mask can prevent the skin from being damaged by sunlight. Therefore, the tea fiber prepared from the natural tea polyphenol has the effects of antibiosis, deodorization and health care, and has good development prospect.
The tea fiber prepared from natural tea polyphenol can continuously resist bacteria and deodorize because the antibacterial agent is uniformly distributed in the fiber. The tea fiber fabric is naturally beige-brown, has no bleaching and dyeing process, and avoids the pollution to the environment and the potential harm to the human body caused by using chemical synthetic fuel for dyeing. Bedding, textile fabrics and the like made of tea fibers appear on the market, and the tea fiber mattress is characterized by simple, simple and atmospheric overall color, moisture absorption, air permeability, bacteriostasis, insect expelling and comfortable hand feeling. Due to the nature and environmental protection, the bedding and textile products made of the tea fiber as the raw material have no stimulation to the skin of human body, and play a very positive role in promoting sleep, skin care and the like.
However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the inventors of the present application find that the above-mentioned technology has at least the following technical problems: the tea fiber produced at present has the functions of inhibiting bacteria and removing mites, but has poor antibacterial rate and poor antibacterial durability. In particular, the antibacterial effect is reduced during the washing process. The tea fiber in the prior art has the defects of poor biocompatibility, low mechanical property, nondegradable property and the like, and generates larger resistance to subsequent use.
Disclosure of Invention
The application solves the problems of poor antibacterial effect, low mechanical property, poor biocompatibility and flammability in the prior art by providing the skin-care antibacterial tea fiber rich in tea polyphenol and the preparation method thereof, and realizes the technical effects of antibiosis, skin care and flame resistance.
The application provides a tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria, which comprises the following substances in parts by weight: 40-60 parts of tea extract, 20-40 parts of polylactic acid, 40-60 parts of coupling agent, 20-40 parts of bamboo charcoal powder, 20-40 parts of diatomite, 40-60 parts of plasticizer, 40-50 parts of dispersing agent and 40-60 parts of fiber matrix.
In a preferred embodiment, the weight ratio of the tea extract to the polylactic acid is 1-3: 1.
in a preferred embodiment, the coupling agent is a titanate coupling agent.
In a preferred embodiment, the titanate coupling agent is isopropyl triisostearate and/or isopropyldioleacyloxy (dioctylphosphato) titanate.
In a preferred embodiment, the weight ratio of isopropyl triisostearate to isopropyldioleacyloxy (dioctylphosphonoxy) titanate is 1: 1.
in a preferred embodiment, the weight ratio of the bamboo charcoal powder to the diatomite is 1: 1.
in a preferred embodiment, the plasticizer is polyethylene glycol and/or tributyl citrate.
In a preferred embodiment, the weight ratio of the polyethylene glycol to the tributyl citrate is 1: 1.
in a preferred embodiment, the fiber matrix is bamboo fiber and/or wormwood fiber, and the weight ratio of the bamboo fiber to the wormwood fiber is 1: 1.
the application provides a preparation method of tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria, and the preparation method comprises the following steps: (1) mixing the tea extract, polylactic acid, a coupling agent, bamboo charcoal powder and diatomite according to parts by weight to obtain a mixture 1; (2) mixing the fiber matrixes according to parts by weight to obtain a mixture 2; (3) granulating; (4) and (4) spinning.
The invention has the following beneficial effects:
1. the invention improves the flame resistance and the degradability of the tea fiber by adding polylactic acid;
2. according to the invention, the bamboo charcoal powder and the diatomite are added, so that the antibacterial performance and the mite removing rate are improved;
3. the mechanical property of the tea fiber can be improved by adding the plasticizer.
Detailed Description
The application provides a tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria and a preparation method thereof, and is characterized by comprising the following substances in parts by weight: 40-60 parts of tea extract, 20-40 parts of polylactic acid, 40-60 parts of coupling agent, 20-40 parts of bamboo charcoal powder, 20-40 parts of diatomite, 40-60 parts of plasticizer, 40-50 parts of quaternary dispersant and 40-60 parts of fiber matrix.
Preferably, the tea extract comprises tea polyphenols.
The extraction method of the tea extract comprises the following steps:
preprocessing green tea leaves: dedusting and crushing green tea leaves, sieving with a 60-80-mesh sieve, then placing in a constant-temperature air-blast drying oven at 105 ℃ for drying for 2h, and cooling to room temperature to obtain green tea powder for later use;
② accurately weighing 1g of dried green tea powder, sieving with a 60-80 mesh sieve, dissolving in 20mL of double-distilled water, placing in a water bath at 60 ℃ for shaking extraction at a rotation speed of 150r/min for 1h, and filtering. Extracting the filtered green tea residue repeatedly for 3 times under the same conditions, and mixing the 3 times of filtrates to obtain the final product.
The tea leaf is bud leaf of Theaceae plant tea. Tea trees are usually planted for more than three years, and then leaves can be picked. When young leaves are first grown at the front and rear branches of Qingming, the young shoots are picked optimally (the picker before Qingming is called as "before Ming", and the picker before grain rain is called as "before rain"). After about one month, the young leaves are harvested for the second time, and then harvested for the third time. There are also the fourth harvest after autumn, but the later the harvest time, the more the quality. Collecting fresh leaves, deactivating enzyme, twisting, drying, refining, etc. to obtain the final product green tea. If the fresh leaves are processed by withering, rolling, fermenting, drying, refining and the like, the finished product of the black tea is obtained. It should be stored in dry place to prevent mildew and deterioration. Evergreen shrubs are sometimes arbor-like and 1-6 m high. The branches are multi-branched, the tender branches have fine hair, and the tender branches fall off after aging.
The tea is purchased from the tea market.
In a preferred embodiment, the weight ratio of the tea extract to the polylactic acid is 1-3: 1.
the CAS number of the polylactic acid is 31852-84-3, and the polylactic acid is purchased from Shanghai daycare medicine science and technology Co.
The addition of polylactic acid can improve the flame resistance and the degradability of the tea fiber. The possible reasons are: the polylactic acid has hydroxyl, carboxyl and other groups, and can delay the spread of the flame of the tea fiber by the interaction with the tea extract and the coupling agent isopropyl triisostearate and the like.
In a preferred embodiment, the coupling agent is a titanate coupling agent.
Preferably, the titanate coupling agent is isopropyl triisostearate and/or isopropyldioleate acyloxy (dioctyl phosphate acyloxy) titanate.
In a preferred embodiment, the weight ratio of isopropyl triisostearate to isopropyldioleacyloxy (dioctylphosphonoxy) titanate is 1: 1.
isopropyl triisostearate and isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate can improve the oxidation resistance and mechanical property of the tea fiber. The possible reasons are: the titanate coupling agent has acyloxy, acyloxy and other groups, can be bent and intertwined with the plasticizer, and can interact with substances containing ketone groups and hydroxyl in the tea extract to improve the oxidation resistance and mechanical properties of the tea fibers.
The CAS number of the isopropyl triisostearate is 61417-49-0, and the isopropyl triisostearate is purchased from Nanjing and an emollient coupling agent company Limited; the isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate CAS number is 61417-49-0, and is purchased from Pertna chemical company, Suzhou.
In a preferred embodiment, the weight ratio of the bamboo charcoal powder to the diatomite is 1: 1.
the addition of bamboo charcoal powder and diatomite can improve antibacterial property and mite removing rate. The possible reasons are: the bamboo charcoal molecular structure is hexagonal, fine and porous, the main component of the diatomite is SiO2, the diatomite has a porous structure, and can interact with the tea extract, so that the loss of the tea extract is prevented, the capability of the tea fiber which is not lost under the action of bacteria or microorganisms can be enhanced, and the survival rate of mites is reduced.
The bamboo charcoal powder is purchased from Zhejiang Wanglin Biotechnology Co., Ltd, the CAS number of the diatomite is 61790-53-2, and the bamboo charcoal powder is purchased from Shanghai Yanze chemical Co., Ltd.
In a preferred embodiment, the plasticizer is polyethylene glycol and/or tributyl citrate.
Polyethylene glycol and tributyl citrate can be used as plasticizer to improve plasticity, strength and uvioresistant performance of tea fiber. Polyethylene glycol and tributyl citrate have hydroxyl, carboxyl and other groups, and interact with isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, so that the tea fiber can be prevented from generating variation due to the influence of environmental factors.
The CAS number of the polyethylene glycol is 119438-10-7, the CAS number is purchased from chemical engineering Co., Ltd of Waverrucaceae, Beijing, the CAS number of the tributyl citrate is 77-94-1, and the CAS number is purchased from chemical new materials Co., Ltd of Huabang, Wuhan.
The pentaerythritol stearate is one or more of polyvinylpyrrolidone, irregular propylene, sodium dodecyl sulfate, fatty alcohol-polyoxyethylene ether 7 and pentaerythritol stearate.
Preferably, the dispersant is pentaerythritol stearate.
The CAS number of the pentaerythritol stearate is 115-83-3, and the pentaerythritol stearate is purchased from Chiloeei (Shanghai) formation industry development limited company.
In a preferred embodiment, the fiber matrix is bamboo fiber and/or wormwood fiber, and the weight ratio of the bamboo fiber to the wormwood fiber is 1: 1.
the wormwood fiber is purchased from Qingdao Baicao New Material GmbH, and the bamboo fiber is purchased from Guilian GmbH.
Preferably, the weight ratio of the tea extract, the bamboo fiber and the wormwood fiber is 1-3: 1: 1.
the application provides a preparation method of tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria, and the preparation method comprises the following steps: (1) mixing the tea extract, polylactic acid, a coupling agent, bamboo charcoal powder and diatomite according to parts by weight to obtain a mixture 1; (2) mixing the fiber matrixes according to parts by weight to obtain a mixture 2; (3) granulating; (4) and (4) spinning.
The preparation method of the mixture 1 comprises the following steps: mixing 40-60 parts of tea extract and 20-40 parts of polylactic acid, stirring at the rotating speed of 200r/min, adding 40-60 parts of coupling agent, 20-40 parts of bamboo charcoal powder and 20-40 parts of diatomite during stirring, and continuously stirring for 10min to obtain a mixture 1;
the preparation method of the mixture 2 comprises the following steps: mixing and stirring 20-30 parts of bamboo fibers and 20-30 parts of wormwood fibers in a high-speed stirrer to obtain a mixture 2;
the granulation steps are as follows: and putting the mixture 1 and the mixture 2 into a high-speed kneader, adding 40-60 parts of plasticizer and 40-50 parts of pentaerythritol stearate during high-speed rotation, mixing for 10-20min, and then putting the mixture into a double-screw extruder for granulation.
The base temperature of the double-screw extruder is 200-300 ℃.
The model of the high-speed kneader is an SHG-200 high-speed kneader which is purchased from Rugao Saxiu plastic machinery factories.
The spinning steps are as follows: and spinning in an electrostatic spinning machine after granulation is finished, wherein the temperature of a spinning box is 100-150 ℃, the winding speed of the spinning is 60-100m/min, the cold air temperature is 18-24 ℃, and the air speed is 5-10 m/s.
The electrostatic spinning machine E02 is used for spinning, the spinning voltage is 0-30kv, and the reciprocating movement width of the spray head is 150 mm.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Example 1
The tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria comprises, by weight, 60 parts of a tea extract, 20 parts of polylactic acid, 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyl dioleacyloxy (dioctyl phosphoryloxy) titanate, 20 parts of bamboo charcoal powder, 20 parts of kieselguhr, 30 parts of polyethylene glycol, 30 parts of tributyl citrate, 40 parts of pentaerythritol stearate, 20 parts of bamboo fiber and 20 parts of wormwood fiber.
The CAS number of the polylactic acid is 31852-84-3, and the polylactic acid is purchased from Shanghai daycare medicine science and technology Co.
The tea extract comprises tea polyphenols.
The extraction method of the tea extract comprises the following steps:
preprocessing green tea leaves: dedusting and crushing green tea leaves, sieving with a 60-80-mesh sieve, then placing in a constant-temperature air-blast drying oven at 105 ℃ for drying for 2h, and cooling to room temperature to obtain green tea powder for later use;
② accurately weighing 1g of dried green tea powder, sieving with a 60-80 mesh sieve, dissolving in 20mL of double-distilled water, placing in a water bath at 60 ℃ for shaking extraction at a rotation speed of 150r/min for 1h, and filtering. Extracting the filtered green tea residue repeatedly for 3 times under the same conditions, and mixing the 3 times of filtrates to obtain the final product.
The polyethylene glycol CAS number is 119438-10-7, and the polyethylene glycol CAS is purchased from chemical engineering Co., Ltd. The application provides a preparation method of tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria, and the preparation method comprises the following steps: (1) mixing 60 parts of tea extract, 20 parts of polylactic acid, 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyldioleacyloxy (dioctyl phosphate acyloxy) titanate, 20 parts of bamboo charcoal powder and 20 parts of diatomite to obtain a mixture 1; (2) mixing the fiber matrixes according to parts by weight to obtain a mixture 2; (3) granulating; (4) and (4) spinning.
The preparation method of the mixture 1 comprises the following steps: mixing 60 parts of tea extract and 20 parts of polylactic acid, stirring at the rotating speed of 200r/min, adding 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, 20 parts of bamboo charcoal powder and 20 parts of diatomite in the stirring process, and continuously stirring for 10min to obtain a mixture 1;
the preparation method of the mixture 2 comprises the following steps: mixing and stirring 20 parts of bamboo fiber and 20 parts of wormwood fiber in a high-speed stirrer to obtain a mixture 2;
the granulation steps are as follows: and putting the mixture 1 and the mixture 2 into a high-speed kneader, adding 30 parts of polyethylene glycol, 30 parts of tributyl citrate and 40 parts of pentaerythritol stearate during high-speed rotation, mixing for 14min, and then putting the mixture into a double-screw extruder for granulation.
The base temperature of the double-screw extruder is 250 ℃.
The model of the high-speed kneader is an SHG-200 high-speed kneader which is purchased from Rugao Saxiu plastic machinery factories.
The spinning steps are as follows: and spinning in an electrostatic spinning machine after granulation is finished, wherein the temperature of a spinning box is 100-150 ℃, the winding speed of the spinning is 80m/min, the cold air temperature is 18 ℃, and the air speed is 6 m/s.
The electrostatic spinning machine E02 is used for spinning, the spinning voltage is 0-30kv, and the reciprocating movement width of the spray head is 150 mm.
Example 2
A tea polyphenol-rich tea fiber capable of protecting skin and resisting bacteria comprises, by weight, 40 parts of a tea extract, 40 parts of polylactic acid, 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyl dioleacyloxy (dioctyl phosphoryloxy) titanate, 20 parts of bamboo charcoal powder, 20 parts of kieselguhr, 30 parts of polyethylene glycol, 30 parts of tributyl citrate, 40 parts of pentaerythritol stearate, 20 parts of bamboo fiber and 20 parts of wormwood fiber.
The CAS number of the polylactic acid is 31852-84-3, and the polylactic acid is purchased from Shanghai daycare medicine science and technology Co.
The extraction method of the tea extract was the same as in example 1.
The preparation method of the tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria comprises the following steps: (1) mixing 40 parts of tea extract, 40 parts of polylactic acid, 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyldioleacyloxy (dioctyl phosphate acyloxy) titanate, 20 parts of bamboo charcoal powder and 20 parts of diatomite to obtain a mixture 1; (2) mixing the fiber matrixes according to parts by weight to obtain a mixture 2; (3) granulating; (4) and (4) spinning.
The preparation method of the mixture 1 comprises the following steps: mixing 40 parts of tea extract and 40 parts of polylactic acid, stirring at the rotating speed of 200r/min, adding 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, 20 parts of bamboo charcoal powder and 20 parts of diatomite in the stirring process, and continuously stirring for 10min to obtain a mixture 1;
the preparation method of the mixture 2 comprises the following steps: mixing and stirring 20 parts of bamboo fiber and 20 parts of wormwood fiber in a high-speed stirrer to obtain a mixture 2;
the granulation steps are as follows: and putting the mixture 1 and the mixture 2 into a high-speed kneader, adding 30 parts of polyethylene glycol, 30 parts of tributyl citrate and 40 parts of pentaerythritol stearate during high-speed rotation, mixing for 14min, and then putting the mixture into a double-screw extruder for granulation.
The base temperature of the double-screw extruder is 250 ℃.
The model of the high-speed kneader is an SHG-200 high-speed kneader which is purchased from Rugao Saxiu plastic machinery factories.
The spinning steps are as follows: and spinning in an electrostatic spinning machine after granulation is finished, wherein the temperature of a spinning box is 100-150 ℃, the winding speed of the spinning is 80m/min, the cold air temperature is 18 ℃, and the air speed is 6 m/s.
Comparative example 1
A tea polyphenol-rich tea fiber capable of protecting skin and resisting bacteria comprises, by weight, 60 parts of a tea extract, 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyl dioleate acyloxy (dioctyl phosphoryloxy) titanate, 20 parts of bamboo charcoal powder, 20 parts of diatomite, 30 parts of polyethylene glycol, 30 parts of tributyl citrate, 40 parts of pentaerythritol stearate, 20 parts of bamboo fiber and 20 parts of wormwood fiber.
The CAS number of the polylactic acid is 31852-84-3, and the polylactic acid is purchased from Shanghai daycare medicine science and technology Co.
The extraction method of the tea extract was the same as in example 1.
The preparation method of the tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria comprises the following steps: (1) 60 parts of tea extract, 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, 20 parts of bamboo charcoal powder and 20 parts of diatomite to obtain a mixture 1; (2) mixing the bamboo fiber and the wormwood fiber in parts by weight to obtain a mixture 2; (3) granulating; (4) and (4) spinning.
The preparation method of the mixture 1 comprises the following steps: stirring 60 parts of tea extract at the rotating speed of 200r/min, adding 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, 20 parts of bamboo charcoal powder and 20 parts of diatomite in the stirring process, and continuously stirring for 10min to obtain a mixture 1;
the preparation method of the mixture 2 comprises the following steps: mixing and stirring 20 parts of bamboo fiber and 20 parts of wormwood fiber in a high-speed stirrer to obtain a mixture 2;
the granulation steps are as follows: and putting the mixture 1 and the mixture 2 into a high-speed kneader, adding 30 parts of polyethylene glycol, 30 parts of tributyl citrate and 40 parts of pentaerythritol stearate during high-speed rotation, mixing for 14min, and then putting the mixture into a double-screw extruder for granulation.
The base temperature of the double-screw extruder is 250 ℃.
The model of the high-speed kneader is an SHG-200 high-speed kneader which is purchased from Rugao Saxiu plastic machinery factories.
The spinning steps are as follows: and spinning in an electrostatic spinning machine after granulation is finished, wherein the temperature of a spinning box is 100-150 ℃, the winding speed of the spinning is 80m/min, the cold air temperature is 18 ℃, and the air speed is 6 m/s.
The electrostatic spinning machine E02 is used for spinning, the spinning voltage is 0-30kv, and the reciprocating movement width of the spray head is 150 mm.
Comparative example 2
The skin-care antibacterial tea fiber rich in tea polyphenol comprises, by weight, 60 parts of a tea extract, 20 parts of polylactic acid, 60 parts of isopropyl dioleoyl (dioctyl phosphoryloxy) titanate, 20 parts of bamboo charcoal powder, 20 parts of diatomite, 30 parts of polyethylene glycol, 30 parts of tributyl citrate, 40 parts of pentaerythritol stearate, 20 parts of bamboo fiber and 20 parts of wormwood fiber.
The CAS number of the polylactic acid is 31852-84-3, and the polylactic acid is purchased from Shanghai daycare medicine science and technology Co.
The extraction method of the tea extract was the same as in example 1.
The preparation method of the tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria comprises the following steps: (1) 60 parts of tea extract, 20 parts of polylactic acid, 60 parts of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, 20 parts of bamboo charcoal powder and 20 parts of diatomite to obtain a mixture 1; (2) mixing the bamboo fiber and the wormwood fiber in parts by weight to obtain a mixture 2; (3) granulating; (4) and (4) spinning.
The preparation method of the mixture 1 comprises the following steps: mixing 60 parts of tea extract and 20 parts of polylactic acid, stirring at the rotating speed of 200r/min, adding 60 parts of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, 20 parts of bamboo charcoal powder and 20 parts of diatomite in the stirring process, and continuously stirring for 10min to obtain a mixture 1;
the preparation method of the mixture 2 comprises the following steps: mixing and stirring 20 parts of bamboo fiber and 20 parts of wormwood fiber in a high-speed stirrer to obtain a mixture 2;
the granulation steps are as follows: and putting the mixture 1 and the mixture 2 into a high-speed kneader, adding 30 parts of polyethylene glycol, 30 parts of tributyl citrate and 40 parts of pentaerythritol stearate during high-speed rotation, mixing for 14min, and then putting the mixture into a double-screw extruder for granulation.
The base temperature of the double-screw extruder is 250 ℃.
The model of the high-speed kneader is an SHG-200 high-speed kneader which is purchased from Rugao Saxiu plastic machinery factories.
The spinning steps are as follows: and spinning in an electrostatic spinning machine after granulation is finished, wherein the temperature of a spinning box is 100-150 ℃, the winding speed of the spinning is 80m/min, the cold air temperature is 18 ℃, and the air speed is 6 m/s.
Comparative example 3
The skin-care antibacterial tea fiber rich in tea polyphenol comprises, by weight, 60 parts of a tea extract, 20 parts of polylactic acid, 60 parts of triisostearoyl isopropyl titanate, 20 parts of bamboo charcoal powder, 20 parts of diatomite, 30 parts of polyethylene glycol, 30 parts of tributyl citrate, 40 parts of pentaerythritol stearate, 20 parts of bamboo fiber and 20 parts of wormwood fiber.
The CAS number of the polylactic acid is 31852-84-3, and the polylactic acid is purchased from Shanghai daycare medicine science and technology Co.
The extraction method of the tea extract was the same as in example 1.
The preparation method of the tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria comprises the following steps: (1) 60 parts of tea extract, 20 parts of polylactic acid, 60 parts of triisostearoyl isopropyl titanate, 20 parts of bamboo charcoal powder and 20 parts of diatomite to obtain a mixture 1; (2) mixing the bamboo fiber and the wormwood fiber in parts by weight to obtain a mixture 2; (3) granulating; (4) and (4) spinning.
The preparation method of the mixture 1 comprises the following steps: mixing 60 parts of tea extract and 20 parts of polylactic acid, stirring at the rotating speed of 200r/min, adding 60 parts of triisostearoyl isopropyl titanate, 20 parts of bamboo charcoal powder and 20 parts of diatomite in the stirring process, and continuously stirring for 10min to obtain a mixture 1;
the preparation method of the mixture 2 comprises the following steps: mixing and stirring 20 parts of bamboo fiber and 20 parts of wormwood fiber in a high-speed stirrer to obtain a mixture 2;
the granulation steps are as follows: and putting the mixture 1 and the mixture 2 into a high-speed kneader, adding 30 parts of polyethylene glycol, 30 parts of tributyl citrate and 40 parts of pentaerythritol stearate during high-speed rotation, mixing for 14min, and then putting the mixture into a double-screw extruder for granulation.
The base temperature of the double-screw extruder is 250 ℃.
The model of the high-speed kneader is an SHG-200 high-speed kneader which is purchased from Rugao Saxiu plastic machinery factories.
The spinning steps are as follows: and spinning in an electrostatic spinning machine after granulation is finished, wherein the temperature of a spinning box is 100-150 ℃, the winding speed of the spinning is 80m/min, the cold air temperature is 18 ℃, and the air speed is 6 m/s.
Comparative example 4
A tea polyphenol-rich tea fiber capable of protecting skin and resisting bacteria comprises, by weight, 60 parts of a tea extract, 20 parts of polylactic acid, 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, 40 parts of bamboo charcoal powder, 30 parts of polyethylene glycol, 30 parts of tributyl citrate, 40 parts of pentaerythritol stearate, 20 parts of bamboo fiber and 20 parts of wormwood fiber.
The CAS number of the polylactic acid is 31852-84-3, and the polylactic acid is purchased from Shanghai daycare medicine science and technology Co.
The extraction method of the tea extract was the same as in example 1.
The application provides a preparation method of tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria, and the preparation method comprises the following steps: (1) mixing 60 parts of tea extract, 20 parts of polylactic acid, 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyldioleacyloxy (dioctyl phosphate acyloxy) titanate and 40 parts of bamboo charcoal powder to obtain a mixture 1; (2) mixing the fiber matrixes according to parts by weight to obtain a mixture 2; (3) granulating; (4) and (4) spinning.
The preparation method of the mixture 1 comprises the following steps: mixing 60 parts of tea extract and 20 parts of polylactic acid, stirring at the rotating speed of 200r/min, adding 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate and 20 parts of bamboo charcoal powder in the stirring process, and continuously stirring for 10min to obtain a mixture 1;
the preparation method of the mixture 2 comprises the following steps: mixing and stirring 20 parts of bamboo fiber and 20 parts of wormwood fiber in a high-speed stirrer to obtain a mixture 2;
the granulation steps are as follows: and putting the mixture 1 and the mixture 2 into a high-speed kneader, adding 30 parts of polyethylene glycol, 30 parts of tributyl citrate and 40 parts of pentaerythritol stearate during high-speed rotation, mixing for 14min, and then putting the mixture into a double-screw extruder for granulation.
The base temperature of the double-screw extruder is 250 ℃.
The model of the high-speed kneader is an SHG-200 high-speed kneader which is purchased from Rugao Saxiu plastic machinery factories.
The spinning steps are as follows: and spinning in an electrostatic spinning machine after granulation is finished, wherein the temperature of a spinning box is 100-150 ℃, the winding speed of the spinning is 80m/min, the cold air temperature is 18 ℃, and the air speed is 6 m/s.
The CAS number of the polylactic acid is 31852-84-3, and the polylactic acid is purchased from Shanghai daycare medicine science and technology Co.
Comparative example 5
The skin-care antibacterial tea fiber rich in tea polyphenol comprises, by weight, 60 parts of a tea extract, 20 parts of polylactic acid, 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, 40 parts of diatomite, 30 parts of polyethylene glycol, 30 parts of tributyl citrate, 40 parts of pentaerythritol stearate, 20 parts of bamboo fiber and 20 parts of wormwood fiber.
The CAS number of the polylactic acid is 31852-84-3, and the polylactic acid is purchased from Shanghai daycare medicine science and technology Co.
The extraction method of the tea extract was the same as in example 1.
The application provides a preparation method of tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria, and the preparation method comprises the following steps: (1) mixing 60 parts of tea extract, 20 parts of polylactic acid, 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate and 40 parts of diatomite to obtain a mixture 1; (2) mixing the fiber matrixes according to parts by weight to obtain a mixture 2; (3) granulating; (4) and (4) spinning.
The preparation method of the mixture 1 comprises the following steps: mixing 60 parts of tea extract and 20 parts of polylactic acid, stirring at the rotating speed of 200r/min, adding 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate and 40 parts of diatomite in the stirring process, and continuously stirring for 10min to obtain a mixture 1;
the preparation method of the mixture 2 comprises the following steps: mixing and stirring 20 parts of bamboo fiber and 20 parts of wormwood fiber in a high-speed stirrer to obtain a mixture 2;
the granulation steps are as follows: and putting the mixture 1 and the mixture 2 into a high-speed kneader, adding 30 parts of polyethylene glycol, 30 parts of tributyl citrate and 40 parts of pentaerythritol stearate during high-speed rotation, mixing for 14min, and then putting the mixture into a double-screw extruder for granulation.
The base temperature of the double-screw extruder is 250 ℃.
The model of the high-speed kneader is an SHG-200 high-speed kneader which is purchased from Rugao Saxiu plastic machinery factories.
The spinning steps are as follows: and spinning in an electrostatic spinning machine after granulation is finished, wherein the temperature of a spinning box is 100-150 ℃, the winding speed of the spinning is 80m/min, the cold air temperature is 18 ℃, and the air speed is 6 m/s.
Comparative example 6
A tea polyphenol-rich tea fiber capable of protecting skin and resisting bacteria comprises, by weight, 60 parts of a tea extract, 20 parts of polylactic acid, 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, 20 parts of bamboo charcoal powder, 20 parts of diatomite, 60 parts of tributyl citrate, 40 parts of pentaerythritol stearate, 20 parts of bamboo fiber and 20 parts of wormwood fiber.
The CAS number of the polylactic acid is 31852-84-3, and the polylactic acid is purchased from Shanghai daycare medicine science and technology Co.
The extraction method of the tea extract was the same as in example 1.
The application provides a preparation method of tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria, and the preparation method comprises the following steps: (1) mixing 60 parts of tea extract, 20 parts of polylactic acid, 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyldioleacyloxy (dioctyl phosphate acyloxy) titanate, 20 parts of bamboo charcoal powder and 20 parts of diatomite to obtain a mixture 1; (2) mixing the fiber matrixes according to parts by weight to obtain a mixture 2; (3) granulating; (4) and (4) spinning.
The preparation method of the mixture 1 comprises the following steps: mixing 60 parts of tea extract and 20 parts of polylactic acid, stirring at the rotating speed of 200r/min, adding 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, 20 parts of bamboo charcoal powder and 20 parts of diatomite in the stirring process, and continuously stirring for 10min to obtain a mixture 1;
the preparation method of the mixture 2 comprises the following steps: mixing and stirring 20 parts of bamboo fiber and 20 parts of wormwood fiber in a high-speed stirrer to obtain a mixture 2;
the granulation steps are as follows: and putting the mixture 1 and the mixture 2 into a high-speed kneader, adding 60 parts of tributyl citrate and 40 parts of pentaerythritol stearate during high-speed rotation, mixing for 14min, and then putting the mixture into a double-screw extruder for granulation.
The base temperature of the double-screw extruder is 250 ℃.
The model of the high-speed kneader is an SHG-200 high-speed kneader which is purchased from Rugao Saxiu plastic machinery factories.
The spinning steps are as follows: and spinning in an electrostatic spinning machine after granulation is finished, wherein the temperature of a spinning box is 100-150 ℃, the winding speed of the spinning is 80m/min, the cold air temperature is 18 ℃, and the air speed is 6 m/s.
Comparative example 7
The tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria comprises, by weight, 60 parts of a tea extract, 20 parts of polylactic acid, 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, 20 parts of bamboo charcoal powder, 20 parts of kieselguhr, 60 parts of polyethylene glycol, 40 parts of pentaerythritol stearate, 20 parts of bamboo fiber and 20 parts of wormwood fiber.
The CAS number of the polylactic acid is 31852-84-3, and the polylactic acid is purchased from Shanghai daycare medicine science and technology Co.
The extraction method of the tea extract was the same as in example 1.
The application provides a preparation method of tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria, and the preparation method comprises the following steps: (1) mixing 60 parts of tea extract, 20 parts of polylactic acid, 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyldioleacyloxy (dioctyl phosphate acyloxy) titanate, 20 parts of bamboo charcoal powder and 20 parts of diatomite to obtain a mixture 1; (2) mixing the fiber matrixes according to parts by weight to obtain a mixture 2; (3) granulating; (4) and (4) spinning.
The preparation method of the mixture 1 comprises the following steps: mixing 60 parts of tea extract and 20 parts of polylactic acid, stirring at the rotating speed of 200r/min, adding 30 parts of triisostearoyl isopropyl titanate, 30 parts of isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, 20 parts of bamboo charcoal powder and 20 parts of diatomite in the stirring process, and continuously stirring for 10min to obtain a mixture 1;
the preparation method of the mixture 2 comprises the following steps: mixing and stirring 20 parts of bamboo fiber and 20 parts of wormwood fiber in a high-speed stirrer to obtain a mixture 2;
the granulation steps are as follows: and putting the mixture 1 and the mixture 2 into a high-speed kneader, adding 60 parts of polyethylene glycol and 40 parts of pentaerythritol stearate during high-speed rotation, mixing for 14min, and then putting the mixture into a double-screw extruder for granulation.
The base temperature of the double-screw extruder is 250 ℃.
The model of the high-speed kneader is an SHG-200 high-speed kneader which is purchased from Rugao Saxiu plastic machinery factories.
The spinning steps are as follows: and spinning in an electrostatic spinning machine after granulation is finished, wherein the temperature of a spinning box is 100-150 ℃, the winding speed of the spinning is 80m/min, the cold air temperature is 18 ℃, and the air speed is 6 m/s.
Performance test method
The tea fiber is tested for insect repelling rate, bacteriostasis rate, dry breaking strength and wet breaking strength.
1. The bacteriostasis rate is as follows: observing the turbidity change of the escherichia coli culture medium containing tea fibers by using a spectrophotometer, then carrying out SEM analysis on the tea fibers soaked in the escherichia coli culture medium, and checking the ratio of the number of the tea fibers adsorbing escherichia coli and killing the escherichia coli to the total number in unit volume;
2. the mite removing rate is as follows: the mites were placed in a petri dish containing tea fiber and contacted with the mites under prescribed conditions. After a certain period of culture, counting the number of live mites in the culture dish of the tea fiber, wherein the ratio of the death number of the mites to the total number of the mites is the mite removing rate, so as to evaluate the mite preventing effect;
3. the breaking strength of the tea fibres was tested in dry and wet state: the length of the sample is 10cm, the uniform descending speed is 10mm/min, the load at the time of fracture is the fracture strength, wherein the dry fracture strength is excellent when the dry fracture strength is 6-8CN/dtex, is general when the dry fracture strength is 4-6CN/dtex, and is poor when the dry fracture strength is 2-4 CN/dtex; the wet breaking strength was excellent at 4-6CN/dtex, general at 2-4CN/dtex, and poor at 1-2 CN/dtex.
Claims (10)
1. A tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria is characterized by comprising the following substances in parts by weight: 40-60 parts of tea extract, 20-40 parts of polylactic acid, 40-60 parts of coupling agent, 20-40 parts of bamboo charcoal powder, 20-40 parts of diatomite, 40-60 parts of plasticizer, 40-50 parts of dispersing agent and 40-60 parts of fiber matrix.
2. The tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria as claimed in claim 1, wherein the weight ratio of the tea extract to the polylactic acid is 1-3: 1.
3. the tea polyphenol-rich skin-caring antibacterial tea fiber according to claim 1, wherein the coupling agent is titanate coupling agent.
4. The tea polyphenol-rich skin-caring antibacterial tea fiber according to claim 3, wherein the titanate coupling agent is isopropyl triisostearate and/or isopropyldioleacyloxy (dioctylphosphatoxy) titanate.
5. The tea polyphenol-rich skin-caring antibacterial tea fiber according to claim 4, wherein the weight ratio of isopropyl triisostearate to isopropyldioleacyloxy (dioctylphosphato) titanate is 1: 1.
6. the tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria as claimed in claim 1, wherein the weight ratio of the bamboo charcoal powder to the diatomite is 1: 1.
7. the tea polyphenol-rich skin-caring antibacterial tea fiber according to claim 1, wherein the plasticizer is polyethylene glycol and/or tributyl citrate.
8. The tea fiber rich in tea polyphenol capable of protecting skin and resisting bacteria as claimed in claim 7, wherein the weight ratio of polyethylene glycol to tributyl citrate is 1: 1.
9. the tea fiber rich in tea polyphenol and capable of protecting skin and resisting bacteria as claimed in claim 1, wherein the fiber matrix is bamboo fiber and/or wormwood fiber, and the weight ratio of the bamboo fiber to the wormwood fiber is 1: 1.
10. a method for preparing tea fiber rich in tea polyphenol capable of protecting skin and resisting bacteria as claimed in any one of claims 1 to 9, which comprises the following steps: (1) mixing the tea extract, polylactic acid, a coupling agent, bamboo charcoal powder and diatomite according to parts by weight to obtain a mixture 1; (2) mixing the fiber matrixes according to parts by weight to obtain a mixture 2; (3) granulating; (4) and (4) spinning.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112981936A (en) * | 2021-03-19 | 2021-06-18 | 广州市龙格派服饰有限公司 | Convenient-to-wear student garment with antibacterial function |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112981936A (en) * | 2021-03-19 | 2021-06-18 | 广州市龙格派服饰有限公司 | Convenient-to-wear student garment with antibacterial function |
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Application publication date: 20210126 |