Moisture-absorbing and deodorizing natural latex sole material and preparation method thereof

Abstract

The invention relates to the field of foaming sole materials, and particularly discloses a moisture absorption and deodorization natural latex sole material and a preparation method thereof. The moisture-absorbing and deodorizing natural latex sole material is prepared from the following raw materials in parts by weight: 100 parts of natural rubber, 1.5 to 2.3 parts of oleic acid, 0.5 to 1.2 parts of castor oil, 4 to 6 parts of vulcanizing agent, 0.5 to 1 part of antioxidant, 2 to 3.5 parts of white carbon black, 2 to 5 parts of accelerant and 20 to 30 parts of nanofiber. The nanofiber is prepared from polyvinyl alcohol, halloysite nanotubes and lithium chloride according to the mass ratio of 1 to (0.04 to 0.05) to (0.01 to 0.03). The sole material has the advantages of being high in hygroscopicity, not prone to causing foot odor and beriberi and high in rebound resilience and wear resistance.

Description

Technical Field

[0001] The present application relates to the technical field of foaming sole materials, and more specifically, to a moisture-absorbing and deodorizing natural latex sole material and a preparation method thereof. Background Art

[0002] Natural rubber is a natural polymer compound with cis-1,4-polyisoprene as the main component. 91-94% of its components are rubber hydrocarbons (cis-1,4-polyisoprene), and the rest are non-rubber substances such as proteins, fatty acids, ash, and sugars. It is generally a flaky solid with a relative density of 0.94, a refractive index of 1.522, an elastic modulus of 2-4MPa, softens at 130-140℃, becomes sticky and soft at 150-160℃, and begins to degrade at 200℃. It has high elasticity and slight plasticity at room temperature, crystallizes and hardens at low temperatures, has good alkali resistance, but is not resistant to strong acids, is insoluble in water, low-level ketones and alcohols, and can swell in non-polar solvents such as chloroform and carbon tetrachloride. Natural rubber is the variety with the best coordination between physical and mechanical properties and process processing properties among rubber materials, and has been widely used in rubber foam soles.

[0003] There are more than 250,000 sweat glands on the soles of the human feet. In addition, they are covered by socks and shoes, so the soles of the feet are more prone to sweating. The sweat that has just been discharged is acidic. If the sweat is not dried in time, the urea contained in it will decompose to produce ammonia, making the skin surface neutral or alkaline. Generally, bacteria prefer a neutral to alkaline environment, which creates a suitable environment for bacterial reproduction. When these bacteria decompose the keratin in the skin and the urea and lactic acid in the sweat, various metabolites with odor will be formed. For example, Staphylococcus aureus will decompose the fat in the sebum to form short-chain fatty acids, producing acidic metabolites; urea in sweat is decomposed into ammonia, causing foot odor, etc. If it is not controlled, long-term bacterial infection will also form athlete's foot.

[0004] Although the rubber foam sole made of natural rubber has good softness, resilience and comfort, its breathability and moisture absorption still need to be improved. Summary of the invention

[0005] In order to reduce the formation of foot odor and athlete's foot and improve the hygroscopicity and deodorizing ability of the sole material, the present application provides a hygroscopic and deodorizing natural latex sole material and a preparation method thereof.

[0006] In a first aspect, the present application provides a moisture-absorbing and deodorizing natural latex sole material, which adopts the following technical scheme: a moisture-absorbing and deodorizing natural latex sole material, comprising the following raw materials in parts by weight: 100 parts of natural rubber, 1.5-2.3 parts of oleic acid, 0.5-1.2 parts of castor oil, 4-6 parts of vulcanizing agent, 0.5-1 part of antioxidant, 2-3.5 parts of white carbon black, 2-5 parts of accelerator, and 20-30 parts of nanofibers; The nanofibers include polyvinyl alcohol, halloysite nanotubes and lithium chloride in a mass ratio of 1:0.04-0.05:0.01-0.03.

[0007] By adopting the above technical scheme, the sole material made of natural rubber as the main base material has good flexibility and resilience, strong anti-slip property, and the incorporated nanofibers contain polyvinyl alcohol, halloysite nanotubes and lithium chloride. Polyvinyl alcohol has the advantages of being easily soluble in water, high thermal stability, strong adhesion and good softness, and it has excellent hydrophilicity and hygroscopicity. Halloysite nanotubes have the characteristics of unique submicron hollow tubular structure and rich pore structure, so that they have good hydrophilicity, adsorption and mechanical properties. Lithium chloride is a hygroscopic salt. When it comes into contact with humid air, it can greatly reduce the moisture content in the air and maintain balanced stability. Polyvinyl alcohol, halloysite nanotubes and lithium chloride are electrospun together to prepare nanofibers. The nanofibers can have the properties of polyvinyl alcohol, halloysite nanotubes and lithium chloride, thereby improving the hygroscopicity and adsorption effect of the sole material.

[0008] Optionally, the nanofiber is prepared as follows: The halloysite nanotubes are stirred in a hydrochloric acid solution at 70-80° C. for 8-9 hours, centrifuged, washed, and dried, and immersed in a polyvinyl pyrrolidone aqueous solution for 20-24 hours, centrifuged, and dried to obtain pretreated halloysite nanotubes; The pretreated halloysite nanotubes are immersed in a lithium chloride solution for 20-24 hours and dried to obtain modified halloysite nanotubes; Polyvinyl alcohol is added into acetic acid, heated to dissolve, and modified halloysite nanotubes are added, stirred evenly and then electrospun to obtain nanofibers.

[0009] By adopting the above technical scheme, hydrochloric acid and the Al-OH groups in the halloysite nanotubes are chemically reacted, wherein the Al atoms are replaced by H atoms, so that the groups of the halloysite nanotubes are changed and impurities in the pores are removed, and then the acidified halloysite nanotubes are surface treated with polyvinyl pyrrolidone, and the polyvinyl pyrrolidone molecular chains interact with the surfaces of the halloysite nanotubes, thereby reducing the agglomeration of the halloysite nanotubes, improving their dispersibility and stability, and making the pretreated halloysite nanotubes more easily dispersed in the lithium chloride solution, and after vacuuming and stirring at normal pressure, under the action of atmospheric pressure, a part of the lithium ions in the lithium chloride aqueous solution undergoes a complex reaction with the carbonyl groups on the polyvinyl pyrrolidone, and another part of the lithium chloride solution is distributed in the pores of the halloysite nanotubes, thereby completing the loading and encapsulation, and then the obtained modified halloysite nanotubes are mixed with the dissolved polyvinyl alcohol and then electrospun, and the polyvinyl alcohol and the halloysite nanotubes are entangled with each other, so that the network structure is enhanced, the mechanical strength of the nanofibers is improved, and nanofibers with good mechanical strength, strong hygroscopicity and good adsorption capacity are obtained.

[0010] Optionally, the moisture-absorbing and deodorizing natural latex sole material also includes 20-30 parts by weight of Chinese medicine particles, and the Chinese medicine particles include the following raw materials by weight: 5-6 parts of epoxy resin, 4-5 parts of epoxy curing agent, 5-6 parts of polyethylene glycol, 2-4 parts of Chinese medicine powder, and 4-5 parts of diatomaceous earth.

[0011] By adopting the above technical scheme, the Chinese medicine powder in the Chinese medicine granules has good antibacterial properties, diatomaceous earth has super strong adsorption, epoxy resin has good heat resistance, film-forming property and wear resistance, epoxy resin is coated on diatomaceous earth and Chinese medicine powder, polyethylene glycol is used as a pore-forming agent, thereby forming Chinese medicine particles with pores, which can not only achieve antibacterial and deodorizing effects, but also have good moisture absorption properties.

[0012] Optionally, the preparation method of the Chinese medicine granules is as follows: The epoxy resin, epoxy curing agent and polyethylene glycol are uniformly mixed at room temperature to prepare a premixed solution; The Chinese medicine powder is added to a polyvinyl alcohol solution with a concentration of 3-5wt%, granulated to obtain Chinese medicine granules, mixed with bamboo fiber, and pressed at 70-80° C. to obtain a substrate, wherein the mass ratio of the Chinese medicine powder, the polyvinyl alcohol solution and the bamboo fiber is 1:0.05-0.1:1.5-2; The premixed solution is coated on both sides of the substrate, dried at 50-55° C. for 2-4 hours, heated to 70-75° C., dried for 10-12 hours, washed with deionized water, dried, and crushed into particles with a particle size of 3-4 mm to obtain traditional Chinese medicine particles.

[0013] By adopting the above technical scheme, Chinese medicine powder and diatomaceous earth are mixed, bonded by polyvinyl alcohol solution, and made into Chinese medicine granules, which are then mixed evenly with bamboo fiber. After pressing, the bamboo fibers are overlapped between the Chinese medicine granules, so as to obtain a base material with bamboo fiber as the base material and the Chinese medicine granules as the base material for adhesion particles. The bamboo fiber has high fiber strength and strong wear resistance, and has better moisture absorption and air permeability than ordinary viscose fiber. It also has unique antibacterial, deodorizing and anti-ultraviolet functions, has a strong adsorption function for water molecules, and can quickly absorb moisture and water. At the same time, the surface and the interior are both honeycomb porous structures, and there are multiple grooves on the longitudinal surface to form water molecule channels, which have good moisture conduction effect and can keep the environment dry and comfortable. In addition, it absorbs hydrogen ions and releases hydroxide ions, presents weak alkalinity, can adsorb harmful substances such as bacteria and viruses, and releases negative ions to change the molecular structure of bacteria and other microorganisms, kill microorganisms, and absorb and decompose The epoxy resin premix is ​​coated on both sides of the substrate, and polyethylene glycol is used as a pore-forming agent. After curing, it is removed by washing to form a composite material with epoxy resin and curing agent on both sides and an intermediate layer as the substrate. After crushing, Chinese medicine particles with Chinese medicine particles and bamboo fiber as the core and epoxy resin as the shell are formed. The epoxy resin shell layer can reduce the damage to the active ingredients in the Chinese medicine powder caused by temperature or shear force during the production of the sole material, and reduce the loss of active ingredients. In addition, the epoxy resin has good thermal stability, and it is not easy to produce heat loss during the mixing of natural rubber, but can fully protect the Chinese medicine particles. Moreover, the epoxy resin has strong wear resistance. The Chinese medicine particles evenly dispersed in the shoelace material can not only make the sole material have moisture absorption, deodorization and antibacterial effects, but also improve the wear resistance of the natural rubber sole material.

[0014] Optionally, the bamboo fiber is pretreated as follows: Pre-treating bamboo fiber with concentrated nitric acid to obtain pre-treated bamboo fiber; Lanthanum chloride, amino graphene oxide and anhydrous ethanol are mixed, ultrasonically homogenized, added into pretreated bamboo fiber, filtered and dried after mixing, and the mass ratio of pretreated bamboo fiber, amino graphene oxide and lanthanum chloride is 1:0.3-0.5:0.015-0.02.

[0015] By adopting the above technical scheme, after the bamboo fiber is treated with concentrated nitric acid, under the action of acid etching, the grooves are deepened and increased in number, and the surface of the bamboo fiber after acid treatment contains carboxyl groups, and the hydroxyl content is reduced, which can undergo a grafting reaction with the amino groups on the amino graphene oxide, so that the amino graphene oxide is grafted on the surface of the bamboo fiber, thereby improving the roughness of the bamboo fiber surface, improving the wettability, reactivity and mechanical interlocking between the bamboo fiber and the epoxy resin, and improving the mechanical meshing effect between the bamboo fiber and the epoxy resin. Lanthanum chloride can also effectively reduce the hydroxyl concentration on the surface of the bamboo fiber, and the lanthanum ions can react with the glucose ring C of the cellulose. 2 The lanthanum ions can also form coordination bonds with the oxygen in the hydroxyl groups on the epoxy resin molecular chain to form a rare earth complex with a stable structure, so that the bamboo fiber and the epoxy resin are chemically bonded together through the rare earth elements, thereby improving the interfacial bonding between the bamboo fiber and the epoxy resin, thereby further improving the wear resistance, moisture absorption and antibacterial durability.

[0016] Optionally, before the Chinese medicine granules are mixed with the bamboo fibers, the EVA resin is hot-melted, coated on the surface of the Chinese medicine granules and then dried, and the mass ratio of the Chinese medicine granules to the EVA resin is 1:0.02-0.04.

[0017] By adopting the above technical scheme, EVA resin has the advantages of lightness, good elasticity and good softness. After being hot-melted, it is coated on the Chinese medicine granules. After drying, the EVA resin is solidified on the surface of the Chinese medicine granules. When the Chinese medicine granules with EVA resin adhered to the surface are mixed with bamboo fibers and hot-pressed at 70-80°C, the EVA resin is hot-melted, and the Chinese medicine granules and the bamboo fibers are firmly adhered, thereby increasing the adhesion between the Chinese medicine granules and the bamboo fibers. In addition, the EVA resin is hot-melted and covered on the bamboo fibers, which can further improve the resilience and wear resistance of the bamboo fibers.

[0018] Optionally, the Chinese medicine powder is selected from at least one of Trachelospermum schrenckii, Ajuga chinensis, Twelve Hours, Tripod Wind Stove, Cangqiong, and Magnolia officinalis.

[0019] By adopting the above technical scheme, Trachelospermum schrenkiana has the effects of dispelling wind and unblocking meridians, cooling blood and reducing swelling; Ajuga chinensis has the effects of clearing away heat and detoxifying, and treating swelling and pain from falls; Twelve Hours has the effects of dispelling wind and dampness, promoting blood circulation and relieving pain; Three-legged Wind Stove has the effects of dispelling dampness and relieving pain; Cangqiong can promote blood circulation, dispel wind and relieve pain; Magnolia officinalis has antibacterial and bactericidal effects. Adding the above Chinese medicines to the sole material can relieve foot fatigue and improve wearing comfort.

[0020] Optionally, the Chinese medicine powder comprises the following raw materials in parts by weight: 1-2 parts of Trachelospermum schrenkiana, 0.5-1 parts of Ajuga strychnifolia, 0.1-0.2 parts of Twelve Hours, 0.3-0.7 parts of Tripod Stove, 0.2-0.6 parts of Cangqiong and 2-2.5 parts of Magnolia officinalis.

[0021] By adopting the above technical solution, the above-mentioned Chinese medicine powders in various amounts are mixed and used in combination, which can make the antibacterial and moisture absorption effects of the sole material better.

[0022] Optionally, the vulcanizing agent is sulfur or dicumyl peroxide.

[0023] Optionally, the accelerator includes accelerator M and accelerator TS in a mass ratio of 1:0.5-1.5.

[0024] In a second aspect, the present application provides a method for preparing a moisture-absorbing and deodorizing natural latex sole material, which adopts the following technical solution: A method for preparing a moisture-absorbing and deodorizing natural latex sole material comprises the following steps: Remove ammonia from natural rubber until the pH is 9-9.5, add oleic acid, castor oil, vulcanizing agent and vulcanization accelerator at 25-30°C, stir for 8-15 hours, add antioxidant, nanofiber, Chinese medicine particles and white carbon black, stir for 0.5-1 hour to obtain a mixture; The mixed material is injected into a mold at a temperature of 25-32°C, molded for 2-5 minutes, matured, cooled, dehydrated and dried to obtain the sole material.

[0025] By adopting the above technical scheme, oleic acid is used as a surfactant and lubricant, and castor oil is used as a lubricant, plasticizer and lubricant to improve the emulsification and dispersion of the raw materials. Under the action of a vulcanizer and a vulcanization accelerator, the basically plastic raw rubber is converted into a product with elasticity and stable dimensions through the chemical cross-linking effect between rubber molecules. The sole material prepared has good flexibility, strong antibacterial and hygroscopicity, is not easy to produce odor, and has good wear resistance.

[0026] Optionally, the aging temperature is 100-250° C. and the aging time is 30-50 min.

[0027] By adopting the above technical solution, high-temperature steam can make the natural rubber mixed with the Chinese medicine particles in the sole material tightly bonded, improve the firmness of the Chinese medicine particles, and further enhance the toughness.

[0028] In summary, this application has the following beneficial effects: 1. Since the present application adopts natural rubber as the main raw material of the sole, without any artificial foam components, it is harmless to the human body and has good air permeability. In addition, nanofibers made of polyvinyl alcohol, halloysite nanotubes and lithium chloride are added. The nanofibers have good hygroscopicity, high softness, strong adsorption capacity, can absorb water vapor and reduce odor.

[0029] 2. The present application preferably adopts Chinese medicine particles with epoxy resin added on the surface and diatomaceous earth and Chinese medicine powder added inside, which can inhibit the growth of viruses, keep shoes dry, and reduce the chance of athlete's foot and foot odor.

[0030] 3. In the present application, it is preferred to use overlapping bamboo fibers as carriers, load Chinese medicine granules on their surface, press them to form a base material, and then coat them with a premix containing epoxy resin. After curing, they are crushed to form Chinese medicine particles containing epoxy resin on the outside and Chinese medicine granules and bamboo fibers on the inside. The epoxy resin can protect the Chinese medicine powder and reduce the loss of active ingredients in the Chinese medicine powder. Moreover, under the protection of bamboo fibers, the Chinese medicine particles have better wear resistance, thereby improving the service life of the Chinese medicine particles.

[0031] 4. In the present application, lanthanum chloride and amino graphene oxide are preferably used to pretreat the acid-treated bamboo fiber. The amino group on the amino graphene oxide can undergo a grafting reaction with the carboxyl group on the bamboo fiber, which can reduce the hydroxyl content on the bamboo fiber. Lanthanum chloride can also further reduce the hydroxyl content on the bamboo fiber and increase the surface roughness of the bamboo fiber. Lanthanum chloride can also react and bond with the matrix on the epoxy resin, thereby increasing the wettability between the bamboo fiber and the epoxy resin, improving the interface between the bamboo fiber and the epoxy resin, and improving the wear resistance of the traditional Chinese medicine particles. DETAILED DESCRIPTION

[0032] The following examples further illustrate the present application in detail.

[0033] Preparation Examples 1-5 of Nanofibers In Preparation Example 1, the halloysite nanotubes were selected from Kunna Mineral Products of Lingshou County with the product number KN-0453, polyvinyl alcohol was selected from Changzhou Chuangbi New Materials Co., Ltd. with the product number 088-20, and polyvinyl pyrrolidone was selected from Guangzhou Xinyiyuan with the model number K30.

[0034] Preparation Example 1: (1) 5 g of halloysite nanotubes were stirred in 80 g of 5 mol / L hydrochloric acid solution at 80° C. for 8 h, centrifuged at 4000 r / min for 5 min, washed with distilled water to remove the hydrochloric acid remaining on the surface of the halloysite nanotubes, dried in an oven at 60° C., and then immersed in a 2 wt % aqueous solution of polyvinyl pyrrolidone for 24 h, centrifuged at 5000 r / min for 5 min, and dried at 60° C. to obtain pretreated halloysite nanotubes, wherein the mass ratio of halloysite nanotubes to polyvinyl pyrrolidone was 1:0.01; (2) pre-treated halloysite nanotubes were mixed with a 7 wt % lithium chloride solution and ultrasonically treated for 30 min, vacuum treated at a pressure of -0.05 MPa for 20 min, stirred at normal pressure for 15 min, vacuum treated and stirred at normal pressure twice, centrifuged at a speed of 5000 r / min for 5 min, and dried at 80° C. to obtain modified halloysite nanotubes. The 7 wt % lithium chloride solution was prepared from 3 g lithium chloride and deionized water; (3) Add 100 g of polyvinyl alcohol to 1000 g of acetic acid (20 wt%), heat to 90°C to dissolve, add modified halloysite nanotubes, stir evenly and then electrospin to obtain nanofibers. During electrospinning, the receiving distance is 15 cm, the injection speed is 0.1 mm / min, the inner diameter of the needle is 0.6 mm, and the voltage is 16 kV.

[0035] Preparation Example 2: (1) 4 g of halloysite nanotubes were stirred in 70 g of a 5 mol / L hydrochloric acid solution at 70° C. for 9 h, centrifuged at 4000 r / min for 5 min, washed with distilled water to remove the hydrochloric acid remaining on the surface of the halloysite nanotubes, dried in an oven at 60° C., and then immersed in a 2 wt % aqueous solution of polyvinyl pyrrolidone for 20 h, centrifuged at 5000 r / min for 5 min, and dried at 60° C. to obtain pretreated halloysite nanotubes, wherein the mass ratio of halloysite nanotubes to polyvinyl pyrrolidone was 1:0.01; (2) pre-treated halloysite nanotubes were mixed with a 7 wt % lithium chloride solution and ultrasonically treated for 30 min, vacuum treated at a pressure of -0.05 MPa for 15 min, stirred at normal pressure for 15 min, cycled vacuum treated and stirred at normal pressure for 3 times, centrifuged at a speed of 5000 r / min for 5 min, and dried at 80° C. to obtain modified halloysite nanotubes. The 7 wt % lithium chloride solution was prepared from 1 g of lithium chloride and deionized water; (3) Add 100 g of polyvinyl alcohol to 1000 g of acetic acid (20 wt%), heat to 90°C to dissolve, add modified halloysite nanotubes, stir evenly and then electrospin to obtain nanofibers. During electrospinning, the receiving distance is 15 cm, the injection speed is 0.1 mm / min, the inner diameter of the needle is 0.6 mm, and the voltage is 16 kV.

[0036] Preparation Example 3: (1) 5 g of halloysite nanotubes were mixed with a 7 wt % lithium chloride solution and ultrasonically treated for 30 min, vacuum treated at a pressure of -0.05 MPa for 20 min, stirred at normal pressure for 15 min, cycled through vacuum treatment and normal pressure stirring twice, centrifuged at a speed of 5000 r / min for 5 min, and dried at 80° C. to obtain modified halloysite nanotubes. The 7 wt % lithium chloride solution was prepared from 3 g of lithium chloride and deionized water; (2) Add 100 g of polyvinyl alcohol to 1000 g of acetic acid (20 wt%), heat to 90°C to dissolve, add modified halloysite nanotubes, stir evenly and then electrospin to obtain nanofibers. During electrospinning, the receiving distance is 15 cm, the injection speed is 0.1 mm / min, the inner diameter of the needle is 0.6 mm, and the voltage is 16 kV.

[0037] Preparation Example 4: Add 100g of polyvinyl alcohol to 1000g of acetic acid (20wt%), heat to 90°C to dissolve, add 5g of halloysite nanotubes, stir evenly and then electrospin to obtain nanofibers. During electrospinning, the receiving distance is 15cm, the injection speed is 0.1mm / min, the inner diameter of the needle is 0.6mm, and the voltage is 16kv.

[0038] Preparation Example 5: (1) 5 g of halloysite nanotubes were stirred in 80 g of 5 mol / L hydrochloric acid solution at 80° C. for 8 h, centrifuged at 4000 r / min for 5 min, washed with distilled water to remove the hydrochloric acid remaining on the surface of the halloysite nanotubes, dried in an oven at 60° C., and then immersed in a 2 wt % aqueous solution of polyvinyl pyrrolidone for 24 h, centrifuged at 5000 r / min for 5 min, and dried at 60° C. to obtain pretreated halloysite nanotubes, wherein the mass ratio of halloysite nanotubes to polyvinyl pyrrolidone was 1:0.01; (2) Add 100 g of polyvinyl alcohol to 1000 g of acetic acid (20 wt%), heat to 90°C to dissolve, add pretreated halloysite, stir evenly and then electrospin to obtain nanofibers. During electrospinning, the receiving distance is 15 cm, the injection speed is 0.1 mm / min, the inner diameter of the needle is 0.6 mm, and the voltage is 16 kV.

[0039] Preparation Example 6-17 of Chinese Medicine Granules In the following preparation examples, the epoxy resin is E44, the epoxy curing agent is tetraethylenepentamine, the polyethylene glycol is PEG400, the amino graphene oxide is selected from Xi'an Qiyue Biology, the model is Go-PEI, the EVA resin model is DuPont 40W, the diameter of the bamboo fiber is 0.28 μm, and the length is 0.1 mm.

[0040] Preparation Example 6: 6 kg of epoxy resin, 4 kg of curing agent, 6 kg of polyethylene glycol and 4 kg of traditional Chinese medicine powder are mixed evenly, dried at 50 ° C for 4 h, heated to 70 ° C, dried for 12 h, washed with deionized water, vacuum dried at 50 ° C for 48 h, and crushed into particles with a particle size of 0.5 mm to obtain traditional Chinese medicine granules. The traditional Chinese medicine powder is made by mixing 1 kg of Trachelospermum schrenkiana, 1 kg of Ajuga strychnifolia, 0.2 kg of Twelve Hours, 0.7 kg of Tripod Stove, 0.6 kg of Cangqiong and 0.5 kg of Magnolia officinalis and then crushing them.

[0041] Preparation Example 7: (1) 6 kg of epoxy resin, 4 kg of epoxy curing agent and 6 kg of polyethylene glycol were mixed uniformly at room temperature to prepare a premixed solution; (2) 4 kg of Chinese medicine powder and 5 kg of diatomaceous earth were added to a polyvinyl alcohol solution with a concentration of 5 wt %, granulated to obtain Chinese medicine granules, mixed with bamboo fiber, and pressed at 80° C. and a pressure of 0.05 MPa for 3 s to obtain a substrate with a thickness of 2 mm, wherein the mass ratio of the Chinese medicine powder, the polyvinyl alcohol solution and the bamboo fiber was 1:0.1:2, and the Chinese medicine powder was prepared by mixing and crushing 1 kg of Trachelospermum schrenkiana, 1 kg of Ajuga sibiricum, 0.2 kg of Twelve Hours, 0.7 kg of Tripod Stove, 0.6 kg of Cangqiong and 0.5 kg of Magnolia officinalis; (3) The premix prepared in step (1) is coated on both sides of the substrate prepared in step (2), dried at 50° C. for 4 h, heated to 70° C., dried for 12 h, washed with deionized water, vacuum dried at 50° C. for 48 h, and crushed into particles with a particle size of 4 mm to obtain Chinese medicine particles.

[0042] Preparation Example 8: (1) 5 kg of epoxy resin, 5 kg of epoxy curing agent and 5 kg of polyethylene glycol were mixed uniformly at room temperature to prepare a premixed solution; (2) adding 2 kg of Chinese medicine powder and 4 kg of diatomaceous earth to a polyvinyl alcohol solution with a concentration of 3 wt %, granulating to obtain Chinese medicine granules, mixing with bamboo fiber, and pressing at 70° C. and a pressure of 0.06 MPa for 3 s to obtain a substrate with a thickness of 1 mm, wherein the mass ratio of the Chinese medicine powder, the polyvinyl alcohol solution and the bamboo fiber is 1:0.05:1.5, and the Chinese medicine powder is prepared by mixing and crushing 0.7 kg of Trachelospermum schrenkiana, 0.5 kg of Ajuga sibiricum, 0.1 kg of Twelve Hours, 0.3 kg of Tripod Stove, 0.2 kg of Cangqiong and 0.2 kg of Magnolia officinalis; (3) The premix prepared in step (1) is coated on both sides of the substrate prepared in step (2), dried at 55° C. for 2 h, heated to 75° C., dried for 10 h, washed with deionized water, vacuum dried at 50° C. for 48 h, and crushed into particles with a particle size of 3 mm to obtain Chinese medicine particles.

[0043] Preparation Example 9: (1) 6 kg of epoxy resin, 4 kg of epoxy curing agent and 6 kg of polyethylene glycol were mixed uniformly at room temperature to prepare a premixed solution; (2) adding 4 kg of Chinese medicine powder and 5 kg of diatomaceous earth to a polyvinyl alcohol solution with a concentration of 5 wt %, granulating to obtain Chinese medicine granules, wherein the mass ratio of the Chinese medicine powder to the polyvinyl alcohol solution is 1:0.1, and the Chinese medicine powder is prepared by mixing and crushing 1 kg of Trachelospermum schrenkiana, 1 kg of Ajuga sibiricum, 0.2 kg of Twelve Hours, 0.7 kg of Tripod Stove, 0.6 kg of Cangqiong and 0.5 kg of Magnolia officinalis; (3) The premix prepared in step (1) and the Chinese medicine granules prepared in step (2) are mixed evenly, dried at 50° C. for 4 h, heated to 70° C., dried for 12 h, washed with deionized water, vacuum dried at 50° C. for 48 h, and crushed into particles with a particle size of 4 mm to obtain Chinese medicine granules.

[0044] Preparation Example 10: The difference from Preparation Example 7 is that diatomaceous earth was not added.

[0045] Preparation Example 11: The difference from Preparation Example 7 is that in step (2), the bamboo fiber is pretreated as follows: The bamboo fiber was added into concentrated nitric acid, immersed at 70°C for 4 hours, filtered, washed with deionized water until neutral, and then dried at 60°C to obtain pretreated bamboo fiber, wherein the mass ratio of the bamboo fiber to the concentrated nitric acid was 1:3; 20 g of lanthanum chloride, 500 g of amino-modified graphene oxide and 1 kg of anhydrous ethanol were mixed and ultrasonically homogenized, 1 kg of pretreated bamboo fiber was added, the mixture was filtered and vacuum dried at 60°C for 24 h.

[0046] Preparation Example 12: The difference from Preparation Example 7 is that in step (2), the bamboo fiber is pretreated as follows: The bamboo fiber was added into concentrated nitric acid, immersed at 75°C for 3 hours, filtered, washed with deionized water until neutral, and then dried at 65°C to obtain pretreated bamboo fiber, wherein the mass ratio of the bamboo fiber to the concentrated nitric acid was 1:3; 15 g of lanthanum chloride, 300 g of amino-modified graphene oxide and 1 kg of anhydrous ethanol were mixed and ultrasonically homogenized, 1 kg of pretreated bamboo fiber was added, the mixture was filtered and vacuum dried at 65° C. for 20 h.

[0047] Preparation Example 13: The difference from Preparation Example 11 is that lanthanum chloride is not added.

[0048] Preparation Example 14: The difference from Preparation Example 11 is that no amino-treated graphene oxide is added.

[0049] Preparation Example 15: The difference from Preparation Example 11 is that in step (2), before the Chinese medicine granules are mixed with the bamboo fiber, the EVA resin is heat-melted into a liquid at 60°C, and then coated on the surface of the Chinese medicine granules and dried. The mass ratio of the Chinese medicine granules to the EVA resin is 1:0.04.

[0050] Preparation Example 16: The difference from Preparation Example 11 is that in step (2), before the Chinese medicine granules are mixed with the bamboo fiber, the EVA resin is hot-melted into a liquid at 60°C, and then coated on the surface of the Chinese medicine granules and dried. The mass ratio of the Chinese medicine granules to the EVA resin is 1:0.02. Example

[0051] Example 1: A moisture-absorbing and deodorizing natural latex sole material, the raw material dosage of which is shown in Table 1, wherein the natural rubber is selected from Nanbo 9710, the vulcanizing agent is sulfur, the antioxidant is antioxidant 1010, the accelerator includes accelerator M and accelerator TS in a mass ratio of 1:1.5, and the nanofiber is made from Preparation Example 1.

[0052] The preparation method of the above-mentioned moisture absorbing and deodorizing natural latex sole material comprises the following steps: S1. Extract ammonia from natural rubber until the pH value is 9.5, add oleic acid, castor oil, vulcanizing agent and vulcanization accelerator at 25°C, keep warm and stir for 15 hours, add antioxidant, nanofiber and white carbon black, stir for 0.5 hours, and obtain a mixture; S2. The mixture is injected into a mold at a temperature of 32°C, and the mixture is shaped for 5 minutes. The mixture is aged with steam at 150°C for 50 minutes. The product in the mold is taken out, cooled with tap water for 2 hours, dehydrated, and dried at 50°C for 8 hours to obtain the sole material.

[0053] Table 1 Amount of raw materials used for the sole material in Examples 1-4 Raw material / kg Example 1 Example 2 Example 3 Example 4 Natural Rubber 100 100 100 100 Oleic acid 2.3 2 1.8 1.5 castor oil 1.2 1.0 0.7 0.5 Vulcanizing agent 6 5.5 5 4 Antioxidants 1 0.8 0.6 0.5 White Carbon Black 3.5 3 2.5 2 Accelerator 5 4 3 4 Nanofiber 30 28 24 20 Example 2-4: A moisture-absorbing and deodorizing natural latex sole material. The difference from Example 1 is that the amounts of raw materials used are as shown in Table 1.

[0054] Example 5: A moisture-absorbing and deodorizing natural latex sole material, which is different from Example 1 in that the nanofibers are made from Preparation Example 2.

[0055] Example 6: A moisture-absorbing and deodorizing natural latex sole material, which is different from Example 1 in that the nanofibers are made from Preparation Example 3.

[0056] Example 7: A moisture-absorbing and deodorizing natural latex sole material, which is different from Example 1 in that the nanofibers are made from Preparation Example 4.

[0057] Example 8: A moisture-absorbing and deodorizing natural latex sole material, which is different from Example 1 in that the nanofibers are made from Preparation Example 5.

[0058] Example 9: A moisture-absorbing and deodorizing natural latex sole material. The difference from Example 1 is that 30 kg of Chinese medicinal particles prepared in Preparation Example 6 are also added to the raw materials. The difference in the preparation method is that S1. Ammonia is extracted from the natural rubber to a pH of 9.5, oleic acid, castor oil, vulcanizing agent and vulcanization accelerator are added at 25°C, and the mixture is stirred for 15 hours. An antioxidant, Chinese medicinal particles, nanofibers and white carbon are added, and the mixture is stirred for 0.5 hours to obtain a mixture.

[0059] Example 10: A moisture-absorbing and deodorizing natural latex sole material. The difference from Example 1 is that 30 kg of Chinese medicinal particles prepared in Preparation Example 7 are also added to the raw materials. The difference in the preparation method is that S1. Ammonia is extracted from the natural rubber to a pH of 9.5, oleic acid, castor oil, vulcanizing agent and vulcanization accelerator are added at 25°C, and the mixture is stirred for 15 hours. An antioxidant, Chinese medicinal particles, nanofibers and white carbon are added, and the mixture is stirred for 0.5 hours to obtain a mixture.

[0060] Example 11: A moisture-absorbing and deodorizing natural latex sole material. The difference from Example 1 is that 20 kg of Chinese medicinal particles prepared in Preparation Example 8 are also added to the raw materials. The difference in the preparation method is that S1. Ammonia is extracted from the natural rubber to a pH of 9.5, oleic acid, castor oil, vulcanizing agent and vulcanization accelerator are added at 25°C, and the mixture is stirred for 15 hours. An antioxidant, Chinese medicinal particles, nanofibers and white carbon are added, and the mixture is stirred for 0.5 hours to obtain a mixture.

[0061] Example 12: A moisture-absorbing and deodorizing natural latex sole material, which is different from Example 10 in that the Chinese medicine particles are made from Preparation Example 9.

[0062] Example 13: A moisture-absorbing and deodorizing natural latex sole material, which is different from Example 10 in that the Chinese medicine particles are made from Preparation Example 10.

[0063] Example 14: A moisture-absorbing and deodorizing natural latex sole material, which is different from Example 10 in that the Chinese medicine particles are made from Preparation Example 11.

[0064] Example 15: A moisture-absorbing and deodorizing natural latex sole material, which is different from Example 10 in that the Chinese medicine particles are made from Preparation Example 12.

[0065] Example 16: A moisture-absorbing and deodorizing natural latex sole material, which is different from Example 14 in that the Chinese medicine particles are made from Preparation Example 13.

[0066] Example 17: A moisture-absorbing and deodorizing natural latex sole material, which is different from Example 14 in that the Chinese medicine particles are made from Preparation Example 14.

[0067] Example 18: A moisture-absorbing and deodorizing natural latex sole material, which is different from Example 14 in that the Chinese medicine particles are made from Preparation Example 15.

[0068] Example 19: A moisture-absorbing and deodorizing natural latex sole material, which is different from Example 14 in that the Chinese medicine particles are made from Preparation Example 16.

[0069] Comparative Example Comparative Example 1: A moisture-absorbing and deodorizing natural latex sole material, which differs from Example 1 in that an equal amount of polyester fibers are used instead of nanofibers.

[0070] Comparative Example 2: A moisture-absorbing and deodorizing natural latex sole material, which differs from Example 1 in that no nanofibers are added.

[0071] Comparative Example 3: An impact-resistant and moisture-absorbing sole comprises the following raw materials in proportion by weight: 50 parts of natural rubber, 40 parts of thermoplastic styrene-butadiene rubber, 2 parts of wear-resistant oil, 20 parts of diethylene glycol, 20 parts of butyl rubber, 2 parts of silane coupling agents, 10 parts of fibers, 6 parts of transparent zinc oxide, 2 parts of accelerators, 0.5 parts of stearate, 2 parts of low-temperature white foaming agents, 0.5 parts of antioxidants, 2 parts of activators, 2 parts of petroleum resins, 5 parts of sulfur, 5 parts of calcium carbonate, 10 parts of silicon dioxide and 2 bulletproof ceramic sheets, the fibers are nylon fibers, wherein the nylon fibers are nylon staple fibers with a length of 1 mm, and the silane coupling agent is 3-methacryloxypropyltrimethoxysilane.

[0072] The method for preparing the impact-resistant moisture-absorbing sole comprises the following steps: (1) Primary refining: Natural rubber, thermoplastic styrene-butadiene rubber, butyl rubber, fiber, transparent zinc oxide, silane coupling agent and 1 / 2 part of sulfur are mixed by weight and sent to an open mill for refining. The roller spacing of the open mill is 1 mm, and the mixing mill is passed 10 times to form a mixed rubber compound.

[0073] (2) Internal Mixing: The mixed rubber material after the open mixing is sent to the internal mixer for internal mixing at a temperature of 105°C for 4 minutes. Then, 1 / 2 of the silica, wear-resistant oil, stearic acid, diethylene glycol, antioxidant, activator and petroleum resin are poured into the internal mixer for mixing at a temperature of 100°C for 2 minutes. After the first lifting of the hammer to sweep the powder, the remaining 1 / 2 of the silica and the accelerator are poured in and mixed to 125°C. The hammer is lifted for the second time and the material is discharged to form a rubber mixture.

[0074] (3) Secondary milling: Divide the rubber mixture into two parts and classify them into rubber mixture A and rubber mixture B. The ratio of rubber mixture A to rubber mixture B is 12:1. Pour rubber mixture A into a mill for milling. Specifically, the milling process includes passing the rubber mixture through the mill three times and forming triangle packages twice to produce sheets. Place the rubber mixture sheet A on a pad and let it stand for 36 hours.

[0075] (4) Cooling: Pour the rubber mixture sheet A that has been left to stand into the mixing mill and pass it through three times. Then, roll the rubber mixture sheet into a triangular bag. Then, pour the low-temperature white foaming agent and the remaining 1 / 2 portion of sulfur into the triangular bag. Finally, pass it through twice to make a sheet and cool it in water. The temperature of the cooling water is controlled below 15°C. Cool it for 24 hours. The specifications of the rubber mixture sheet A are set to be 1m in length, 0.45m in width, and 8mm in thickness. The cooled rubber mixture sheet A is placed in an air-conditioned room at 20°C and allowed to stand for 12 hours. Then, pour the rubber mixture B into the mixing mill for open mixing. Specifically, the mixing is passed through three times and then stored in a container at 70°C.

[0076] (5) Assembly: Punch out the rubber mixture sheet A that has been left to stand, and cut it into pieces according to the shape of the template. After cutting, open two grooves suitable for bulletproof ceramics from the thin end to the rear end of the rubber mixture sheet A. The grooves penetrate 3 / 7 of the thickness of the rubber mixture sheet A at the corresponding position. Insert two bulletproof ceramic sheets into the two grooves respectively, then take out the rubber mixture B and fill it into the groove space on the bulletproof ceramic sheet and smooth it, and then let it stand and cool at room temperature for 6 hours.

[0077] (6) Vulcanization: Add 100 parts by weight of calcium carbonate to the assembled rubber mixture sheets, and then put them into a mold for vulcanization. The vulcanization temperature is 165°C, the vulcanization time is 400 seconds, the vulcanization temperature is 150°C, and the machine pressure is 15 MPa.

[0078] (7) Compacting and shaping: The rubber sole vulcanized according to the vulcanization time is the finished product. The finished product is immediately compacted and shaped with a wooden block or iron plate that is 1.5 times heavier than the finished product.

[0079] Performance testing The sole material was prepared according to the methods in the above examples and comparative examples, and the performance was tested according to the following method. The test results are recorded in Table 2.

[0080] 1. DIN wear: Tested in accordance with GB / T9867-2008 "Determination of wear resistance of vulcanized rubber or thermoplastic rubber".

[0081] 2. Rebound rate: Tested in accordance with GB / T1681-2009 "Determination of rebound elasticity of vulcanized rubber".

[0082] 3. Tensile strength: Tested in accordance with GB / T6344-2008 "Determination of tensile strength and elongation at break of soft foam polymer materials".

[0083] 4. Moisture absorption effect: The test environment is room temperature 23°C and humidity 56%. The tester wears shoes made of the sole material indoors for 4 hours and then takes off the shoes. The humidity of the shoes before and after the test is measured with a hygrometer. Each embodiment and comparative example is a group, each group uses 10 samples, and the test result takes the average humidity of the 10 samples. The smaller the humidity value after wearing, the better the moisture absorption effect.

[0084] 5. Antibacterial rate: The antibacterial performance of the sample is evaluated by the antibacterial rate according to the national standard GB / 20944.3-2008 "Evaluation of antibacterial properties of textiles Part 3: Oscillation method". The calculation formula is: XS = (AB) / A, where: XS is the antibacterial rate (%); A is the average colony count of the test sample before oscillation; B is the average colony count of the test sample after oscillation. If the average colony count after oscillation is greater than the average colony count before oscillation, the antibacterial rate is calculated as 0.

[0085] 6. Comfort: The test method is as per EN345. Ten volunteers are selected from each group, one for each embodiment and comparative example, and the shoes made of the sole material are tried on. After wearing for three days, the comfort is scored, with a full score of 10. The average score of the ten volunteers in the same group is taken as the score for the group.

[0086] Table 2 Performance test of moisture absorption and deodorization natural latex sole material It can be seen from the data in Table 2 that the nanofibers prepared in Preparation Example 1 are used in Examples 1-4, and the sole materials prepared in Examples 1-4 have good hygroscopicity, high resilience, and high wearing comfort.

[0087] In Example 5, the nanofibers prepared in 2 are used, and the resilience and moisture absorption effects of the sole material prepared therefrom are similar to those of Example 1.

[0088] In Examples 6-8, the nanofibers prepared in Preparation Example 3, Preparation Example 4 and Preparation Example 5 were used respectively. In Preparation Example 3, the halloysite nanotubes were not pretreated, and in Preparation Example 4, not only were the halloysite nanotubes not pretreated, but lithium chloride was not added. In Preparation Example 4, lithium chloride was not added. Compared with Example 1, the moisture absorption effect of the sole materials prepared in Examples 6-8 was weakened, and the tensile strength and rebound rate in Examples 6 and 7 were slightly decreased.

[0089] Compared with Example 1, Example 9 further added the Chinese medicine granules prepared in Preparation Example 6, while Examples 10 and 11 respectively added the Chinese medicine granules prepared in Preparation Examples 7 and 8. In Preparation Examples 7 and 8, the Chinese medicine powder was made into granules and then adhered to the bamboo fiber, which was then pressed and coated with a premix containing epoxy resin. Table 2 shows that although the hygroscopicity of Example 9 was improved, the improvement effect was not as good as that of Examples 10 and 11.

[0090] In Example 12, no bamboo fiber was added to the traditional Chinese medicine granules prepared in Preparation Example 9. Compared with Example 10, as can be seen in Table 2, the moisture absorption capacity of the sole material prepared thereby decreased.

[0091] Example 13 Compared with Example 10, the Chinese medicine particles are prepared by Preparation Example 10, wherein the Chinese medicine is only Trachelospermum jasminoides, and the moisture absorption effect of the sole material prepared thereby is weakened.

[0092] In Example 14 and Example 15, the Chinese medicinal particles prepared in Preparation Example 11 and Preparation Example 12 were used respectively. Compared with Example 10, the wear resistance of the sole material was improved after the bamboo fiber in the Chinese medicinal particles was pretreated, indicating that the mechanical bonding between the bamboo fiber and the epoxy resin was increased, and the outer layer of the epoxy resin was pulled by the internal bamboo fiber in the sole material, reducing wear.

[0093] In Example 16 and Example 17, the Chinese medicine particles prepared in Preparation Example 13 and Preparation Example 14 were used respectively. Compared with Preparation Example 11, Preparation Example 13 and Preparation Example 14 did not add lanthanum chloride and amino-containing graphene oxide respectively. The wear rate of the sole materials prepared in Example 16 and Example 17 increased.

[0094] Compared with Example 14, Example 18 and Example 19 further use EVA resin to pretreat the Chinese medicine granules, which enhances the wear resistance of the sole material, increases the rebound rate and tensile strength, and enhances the flexibility.

[0095] In Comparative Example 1, only polyester fiber is used to replace nanofiber. Compared with Example 1, the moisture absorption effect of the sole material prepared in Comparative Example 1 is weakened.

[0096] In Comparative Example 2, no Chinese medicinal particles were added. Compared with Example 1, the moisture absorption and antibacterial effects of the sole material prepared therefrom were weakened.

[0097] Comparative Example 3 is a sole made of natural rubber in the prior art, which has poor moisture absorption and wear resistance and insufficient antibacterial ability.

[0098] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A moisture-absorbing and deodorizing natural latex sole material, characterized in that: The invention comprises the following raw materials in parts by weight: 100 parts of natural rubber, 1.5-2.3 parts of oleic acid, 0.5-1.2 parts of castor oil, 4-6 parts of vulcanizing agent, 0.5-1 part of antioxidant, 2-3.5 parts of white carbon black, 2-5 parts of accelerator, and 20-30 parts of nanofiber; The nanofibers include polyvinyl alcohol, halloysite nanotubes and lithium chloride in a mass ratio of 1:0.04-0.05:0.01-0.

03.

2. The moisture absorbing and deodorizing natural latex sole material according to claim 1, characterized in that: The preparation method of the nanofiber is as follows: The halloysite nanotubes are stirred in a hydrochloric acid solution at 70-80° C. for 8-9 hours, centrifuged, washed, and dried, and immersed in a polyvinyl pyrrolidone aqueous solution for 20-24 hours, centrifuged, and dried to obtain pretreated halloysite nanotubes; The pretreated halloysite nanotubes are mixed with a lithium chloride solution, subjected to ultrasonic treatment, vacuum treatment for 15-20 minutes, stirred at normal pressure, subjected to cyclic vacuum treatment and normal pressure stirring for 2-3 times, centrifuged, and dried to obtain modified halloysite nanotubes; Polyvinyl alcohol is added into acetic acid, heated to dissolve, and modified halloysite nanotubes are added, stirred evenly, and then electrospun to obtain nanofibers.

3. The moisture absorbing and deodorizing natural latex sole material according to claim 1, characterized in that: The moisture-absorbing and deodorizing natural latex sole material also includes 20-30 parts by weight of Chinese medicine particles, which include the following raw materials by weight: 5-6 parts of epoxy resin, 4-5 parts of epoxy curing agent, 5-6 parts of polyethylene glycol, 2-4 parts of Chinese medicine powder, and 4-5 parts of diatomaceous earth.

4. The moisture absorbing and deodorizing natural latex sole material according to claim 3, characterized in that: The preparation method of the Chinese medicine granules is as follows: The epoxy resin, epoxy curing agent and polyethylene glycol are uniformly mixed at room temperature to prepare a premixed solution; The Chinese medicine powder and diatomaceous earth are added to a polyvinyl alcohol solution with a concentration of 3-5wt%, granulated to obtain Chinese medicine granules, mixed with bamboo fiber, and pressed at 70-80° C. to obtain a substrate, wherein the mass ratio of the Chinese medicine powder, the polyvinyl alcohol solution and the bamboo fiber is 1:0.05-0.1:1.5-2; The premixed solution is coated on both sides of the substrate, dried at 50-55° C. for 2-4 hours, heated to 70-75° C., dried for 10-12 hours, washed with deionized water, dried, and crushed into particles with a particle size of 3-4 mm to obtain traditional Chinese medicine particles.

5. The moisture absorbing and deodorizing natural latex sole material according to claim 4, characterized in that: The bamboo fiber is pretreated as follows: Pre-treating bamboo fiber with concentrated nitric acid to obtain pre-treated bamboo fiber; Lanthanum chloride, amino graphene oxide and anhydrous ethanol are mixed, ultrasonically homogenized, added into pretreated bamboo fiber, filtered and dried after mixing, and the mass ratio of pretreated bamboo fiber, amino graphene oxide and lanthanum chloride is 1:0.3-0.5:0.015-0.

02.

6. The moisture absorbing and deodorizing natural latex sole material according to claim 4, characterized in that: Before the Chinese medicine granules are mixed with the bamboo fibers, the EVA resin is hot-melted, coated on the surface of the Chinese medicine granules and then dried. The mass ratio of the Chinese medicine granules to the EVA resin is 1:0.02-0.

04.

7. The moisture absorbing and deodorizing natural latex sole material according to claim 3, characterized in that: The Chinese medicine powder is selected from at least one of Trachelospermum schrenkiana, Ajuga strychnifolia, Twelve Hours, Tripod Wind Stove, Cangqiong and Magnolia officinalis.

8. The moisture absorbing and deodorizing natural latex sole material according to claim 1, characterized in that: The accelerators include accelerator M and accelerator TS in a mass ratio of 1:0.5-1.

5.

9. The method for preparing the moisture absorbing and deodorizing natural latex sole material according to any one of claims 1 to 8, characterized in that: The following steps are involved: Remove ammonia from natural rubber until the pH is 9-9.5, add oleic acid, castor oil, vulcanizing agent and vulcanization accelerator at 25-30°C, stir for 8-15 hours, add antioxidant, nanofiber, Chinese medicine particles and white carbon black, stir for 0.5-1 hour to obtain a mixture; The mixed material is injected into a mold at a temperature of 25-32° C., molded for 2-5 minutes, matured, cooled, dehydrated and dried to obtain the sole material.

10. The method for preparing the moisture absorbing and deodorizing natural latex sole material according to claim 9, characterized in that: The aging temperature is 100-250° C., and the aging temperature is 30-50 minutes.

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