CN112335993A - Composite energy-absorbing buffering insole and preparation method thereof - Google Patents
Composite energy-absorbing buffering insole and preparation method thereof Download PDFInfo
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
- A43B17/02—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined wedge-like or resilient
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
- A43B17/003—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined characterised by the material
- A43B17/006—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined characterised by the material multilayered
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Abstract
The invention discloses a composite energy-absorbing buffering insole and a preparation method thereof, wherein the composite energy-absorbing buffering insole comprises the following steps: firstly, preparing a deodorization layer; secondly, preparing a buffer layer; thirdly, adhering the deodorization layer, the PU base layer and the buffer layer through hot melting; in the invention, cetyl trimethyl ammonium bromide is added after montmorillonite is dispersed in step S11, the cetyl trimethyl ammonium bromide can be used as an intercalating agent to be inserted between montmorillonite layers to replace interlayer cations, long chains of the cetyl trimethyl ammonium bromide can play a role of pillaring, so that the interlayer spacing of the montmorillonite is increased, then in step S12, polyvinyl alcohol solution is mixed with bagasse fibers, then gelatinized starch, processed montmorillonite and other raw materials are added, the interlayer spacing of the processed montmorillonite is larger, so that the fibers can be inserted between the montmorillonite layers, and further, the montmorillonite layers can form a stable fiber network structure with the fibers, thereby forming a foam material, endowing the prepared foam material with excellent toughness and being capable of being used as an excellent buffer layer.
Description
Technical Field
The invention relates to an insole, in particular to a composite energy-absorbing buffering insole and a preparation method thereof.
Background
The shoe-pad has the effect of protection shoes the inside, simultaneously with human sole direct contact, human sole has distributed a large amount of human sweat gland tissues, can secrete a large amount of sweat every day, these sweat exist in narrow shoes inner space and hardly discharge away relatively, organic matters such as protein in the sweat and the temperature in the shoes, humidity conditions provide the advantage for the bacterium reproduction, can also cause shoes and smelly foot, cause very big puzzlement for people's life, and current deodorant shoe-pad can't play the cushioning effect, make this shoe-pad can't act on and motion field.
Chinese invention patent CN106579652A discloses a healthy insole with antibacterial and deodorant effects and a preparation method thereof, wherein the insole comprises an upper layer, a lower layer and a middle layer, the upper layer and the lower layer are spunlace non-woven fabrics with single-sided silver plating layers, and the middle layer is a rope grid cloth with a certain three-dimensional specification; the silver-plated surfaces of the upper layer and the lower layer are arranged oppositely, the middle layer is arranged in the middle, and the upper layer, the middle layer and the lower layer are bonded together in a hot melting mode or by a medium; the preparation method comprises the following steps: preparing an upper layer and a lower layer, preparing an intermediate layer, compounding and preparing a finished product. The invention has a double-layer double-sided structure, the upper surface and the lower surface are the same, and the use is convenient; the silver coating on the surface has the antibacterial and deodorant effect, and the rope grid cloth in the middle layer enables an air layer to be formed between the upper layer and the lower layer, so that the rope grid cloth has a buffering effect.
Disclosure of Invention
In order to overcome the technical problems, the invention provides a composite energy-absorbing buffering insole and a preparation method thereof.
In the step S12, the polyvinyl alcohol solution and the bagasse fibers are mixed, then the gelatinized starch, the treated montmorillonite and other raw materials are added, the distance between the layers of the treated montmorillonite is large, the fibers can be inserted into the layers of the montmorillonite, and further, the montmorillonite layers and the fibers can form a stable fiber network structure to form a foam material, and the montmorillonite layers have certain rigidity and are not easy to break, so that the prepared foam material can have excellent toughness and can be used as an excellent buffer layer.
The purpose of the invention can be realized by the following technical scheme:
a composite energy-absorbing buffering insole comprises a PU base layer, a deodorization layer compounded on the surface of one side of the PU base layer and a buffer layer compounded on the surface of the other side of the PU base layer;
the deodorization layer is prepared by the following method:
step S1, adding cyanuric chloride and acetone into a three-neck flask according to the weight ratio of 1: 5, transferring the mixture into an ice water bath after magnetic stirring for 10min, continuing stirring for 10min, then dropwise adding 5% by mass of tetramethylpiperidinol aqueous solution into the three-neck flask, controlling the dropwise adding time to be 10min, dropwise adding 10% by mass of ammonia water to adjust the pH value, maintaining the pH value of the system to be 7-8, stirring the mixture for 2h at the rotating speed of 200 and 250r/min after the pH value is stable, then performing suction filtration, washing a filter cake for three times by using absolute ethyl alcohol, finally transferring the filter cake into a vacuum drying box at the temperature of 55-60 ℃, controlling the vacuum degree of the vacuum drying box to be-0.10 MPa and the drying time to be 20h, preparing an intermediate, and controlling the weight ratio of the cyanuric chloride to the tetramethylpiperidinol aqueous solution to be 1: 1-1;
and S2, adding the intermediate prepared in the step S1 into deionized water according to the weight ratio of 1: 10, stirring for 30min at the rotating speed of 100-150r/min to prepare a mixed solution, soaking the cotton and hemp fibers in the mixed solution, carrying out ultrasonic oscillation for 10min in a water bath at the temperature of 10-15 ℃, controlling the ultrasonic power to be 50-60W, adding a sodium hydroxide solution with the mass fraction of 10% after the oscillation is finished, stirring at a constant speed and reacting for 2h, carrying out suction filtration, washing with the deionized water for three times to prepare treated fibers, and weaving to prepare the deodorant layer.
Three chlorine atoms connected with carbon atoms on cyanuric chloride molecules and unsaturated bond carbon-nitrogen bond exist, so that the electron cloud density on the carbon atoms is sharply reduced, and then can generate nucleophilic substitution reaction with most functional groups such as hydroxyl, amino and the like, cyanuric chloride and aqueous solution of tetramethyl piperidinol are mixed in acetone in step S1 of the invention, so that cyanuric chloride and tetramethyl piperidinol generate nucleophilic substitution reaction, preparing an intermediate by replacing the reactive chlorine on the cyanuric chloride molecule, then mixing the intermediate with deionized water in step S2 to prepare a mixed solution, after the mixed solution has excellent antibacterial performance, the cotton and hemp fibers are soaked in the mixed solution and subjected to ultrasonic oscillation in a water bath at the temperature of 10-15 ℃ for 10min, so that the cotton and hemp fibers are endowed with excellent antibacterial and deodorant performance, and the mechanical performance and the hand feeling of the cotton and hemp fibers can be maintained.
Furthermore, the deodorization layer, the PU base layer and the buffer layer are bonded through hot melting.
Furthermore, the thickness of the deodorization layer is 0.5-1mm, the thickness of the PU base layer is 1-1.5mm, and the thickness of the buffer layer is 0.5-1 mm.
Further, the buffer layer is made by the following method:
step S11, dispersing montmorillonite in deionized water, stirring at a constant speed of 200r/min for 30min at 180-;
step S12, adding starch into deionized water, stirring at a constant speed at 50-70 ℃ until gelatinization to obtain a gelatinized starch solution, adding polyvinyl alcohol into deionized water, heating in an oil bath kettle at 80-100 ℃ for 30min to obtain a polyvinyl alcohol solution, mixing the polyvinyl alcohol solution with bagasse fibers, mixing for 30min, sequentially adding calcium carbonate, borax and the gelatinized starch solution, stirring at a constant speed for 15min, adding sodium bicarbonate twice in equal amount, kneading until uniform mixing, adding treated montmorillonite, kneading uniformly, transferring to a fixed mold, foaming for 20min, taking out, and drying at 80 ℃ for 10h to obtain the buffer layer.
The method comprises the following steps of S11, adding cetyl trimethyl ammonium bromide after montmorillonite is dispersed, inserting the cetyl trimethyl ammonium bromide into montmorillonite layers as an intercalation agent in the mixing process to replace interlayer cations, wherein long chains of the cetyl trimethyl ammonium bromide can play a role of pillaring, so that the interlayer spacing of the montmorillonite is increased, then mixing polyvinyl alcohol solution with bagasse fibers in step S12, then adding gelatinized starch, processed montmorillonite and other raw materials, enabling the processed montmorillonite layers to have larger interlayer spacing, so that the fibers can be inserted into the interlayer of the montmorillonite, further enabling the montmorillonite layers to form a stable fiber network structure with the fibers, and forming a foaming material.
Further, in the step S11, the weight ratio of montmorillonite, cetyl trimethyl ammonium bromide and hydrochloric acid is controlled to be 1: 2: 0.1-0.2, in the step S12, the weight ratio of starch to deionized water is controlled to be 1: 10, the weight ratio of polyvinyl alcohol to deionized water is 1: 10, and the weight ratio of polyvinyl alcohol, bagasse fiber, calcium carbonate, borax, starch, sodium bicarbonate and the treated montmorillonite is 0.1: 1: 0.01: 0.02: 0.2: 0.01: 1.
A preparation method of a composite energy-absorbing buffering insole comprises the following steps:
firstly, preparing a deodorization layer;
secondly, preparing a buffer layer;
and thirdly, adhering the deodorization layer, the PU base layer and the buffer layer through hot melting.
The invention has the beneficial effects that:
(1) the invention relates to a composite energy-absorbing buffering insole which comprises a PU (polyurethane) base layer, a deodorization layer compounded on the surface of one side of the PU base layer and a buffering layer compounded on the surface of the other side of the PU base layer, wherein in the preparation process of the deodorization layer, in step S1, cyanuric chloride and aqueous solution of tetramethyl piperidinol are mixed in acetone to enable cyanuric chloride and tetramethyl piperidinol to generate nucleophilic substitution reaction, an intermediate is prepared by substituting reaction chlorine on cyanuric chloride molecules, then, in step S2, the intermediate is mixed with deionized water to prepare a mixed solution, after the mixed solution has excellent antibacterial performance, cotton-flax fibers are soaked in the mixed solution, and ultrasonic oscillation is carried out for 10min in water bath at 10-15 ℃ to endow the cotton-flax fibers with excellent antibacterial and deodorization performance, and the mechanical performance and hand feeling of the cotton-flax fibers can be kept.
(2) In the invention, cetyl trimethyl ammonium bromide is added after montmorillonite is dispersed in a buffer layer in the preparation process in the step S11, the cetyl trimethyl ammonium bromide can be used as an intercalation agent to be inserted between montmorillonite layers to replace interlayer cations, and long chains of the cetyl trimethyl ammonium bromide can play a role of pillaring to increase the interlayer spacing of the montmorillonite, then polyvinyl alcohol solution is mixed with bagasse fibers in the step S12, then gelatinized starch and processed montmorillonite and other raw materials are added, the processed montmorillonite layer spacing is larger, so that the fibers can be inserted between the montmorillonite layers, and then the montmorillonite layers and the fibers can form a stable fiber network structure to form a foam material, and the montmorillonite layers have certain rigidity and are not easy to break, so that the prepared foam material can be endowed with excellent toughness and can be used as an excellent buffer layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A preparation method of a composite energy-absorbing buffering insole comprises the following steps:
firstly, preparing a deodorization layer;
secondly, preparing a buffer layer;
and thirdly, adhering the deodorization layer, the PU base layer and the buffer layer through hot melting.
The deodorization layer is prepared by the following method:
step S1, adding cyanuric chloride and acetone into a three-mouth flask according to the weight ratio of 1: 5, transferring the mixture into an ice water bath after magnetically stirring for 10min, continuing stirring for 10min, then dropwise adding 5% by mass of tetramethylpiperidinol aqueous solution into the three-mouth flask, controlling the dropwise adding time to be 10min, dropwise adding 10% by mass of ammonia water to adjust the pH value, maintaining the pH value of the system to be 8, stirring the mixture for 2h at the rotating speed of 200r/min after the pH value is stable, then performing suction filtration, washing a filter cake for three times by using absolute ethyl alcohol, finally transferring the mixture into a vacuum drying oven at 55 ℃, controlling the vacuum degree of the vacuum drying oven to be-0.10 MPa and the drying time to be 20h, preparing an intermediate, and controlling the weight ratio of cyanuric chloride to the tetramethylpiperidinol aqueous solution to be 1: 1;
and S2, adding the intermediate prepared in the step S1 into deionized water according to the weight ratio of 1: 10, stirring at the rotating speed of 100r/min for 30min to prepare a mixed solution, soaking the cotton and hemp fibers in the mixed solution, carrying out ultrasonic oscillation in a water bath at 10 ℃ for 10min, controlling the ultrasonic power to be 50W, adding a sodium hydroxide solution with the mass fraction of 10% after the oscillation is finished, stirring at a constant speed, reacting for 2h, carrying out suction filtration, washing with deionized water for three times to prepare treated fibers, and weaving to prepare the deodorant layer.
The buffer layer is made by the following method:
step S11, dispersing montmorillonite in deionized water, stirring at a constant speed of 180r/min for 30min to prepare a suspension, adding cetyl trimethyl ammonium bromide into the deionized water, stirring at a constant speed until the cetyl trimethyl ammonium bromide is completely dissolved, adding hydrochloric acid, continuously stirring until the hydrochloric acid is completely dissolved to prepare a mixed solution, adding the mixed solution into the suspension, transferring the mixed solution into a water bath kettle at the temperature of 60 ℃, stirring for 2h by magnetic force to prepare a precipitate, washing the precipitate with the deionized water until no bromide ion exists, drying to prepare the treated montmorillonite, and controlling the weight ratio of the montmorillonite to the cetyl trimethyl ammonium bromide to the hydrochloric acid to be 1: 2: 0.1;
step S12, adding starch into deionized water, stirring at a constant speed at 50 ℃ until gelatinization to obtain a gelatinized starch solution, adding polyvinyl alcohol into deionized water, heating in an oil bath at 80 deg.C for 30min to obtain polyvinyl alcohol solution, mixing polyvinyl alcohol solution with bagasse fiber, mixing for 30min, sequentially adding calcium carbonate, borax and gelatinized starch solution, stirring at uniform speed for 15min, adding sodium bicarbonate twice at equal amount, kneading until mixing, adding treated montmorillonite, kneading, transferring into a fixed mold, foaming for 20min, taking out, drying at 80 deg.C for 10 hr to obtain buffer layer, controlling weight ratio of starch and deionized water at 1: 10, weight ratio of polyvinyl alcohol and deionized water at 1: 10, and weight ratio of polyvinyl alcohol, bagasse fiber, calcium carbonate, borax, starch, sodium bicarbonate and treated montmorillonite at 0.1: 1: 0.01: 0.02: 0.2: 0.01: 1.
Example 2
A preparation method of a composite energy-absorbing buffering insole comprises the following steps:
firstly, preparing a deodorization layer;
secondly, preparing a buffer layer;
and thirdly, adhering the deodorization layer, the PU base layer and the buffer layer through hot melting.
The deodorization layer is prepared by the following method:
step S1, adding cyanuric chloride and acetone into a three-mouth flask according to the weight ratio of 1: 5, transferring the mixture into an ice water bath after magnetically stirring for 10min, continuing stirring for 10min, then dropwise adding 5% by mass of tetramethylpiperidinol aqueous solution into the three-mouth flask, controlling the dropwise adding time to be 10min, dropwise adding 10% by mass of ammonia water to adjust the pH value, maintaining the pH value of the system to be 8, stirring the mixture for 2h at the rotating speed of 200r/min after the pH value is stable, then performing suction filtration, washing a filter cake for three times by using absolute ethyl alcohol, finally transferring the mixture into a vacuum drying oven at 55 ℃, controlling the vacuum degree of the vacuum drying oven to be-0.10 MPa and the drying time to be 20h, preparing an intermediate, and controlling the weight ratio of cyanuric chloride to the tetramethylpiperidinol aqueous solution to be 1: 1.2;
and S2, adding the intermediate prepared in the step S1 into deionized water according to the weight ratio of 1: 10, stirring at the rotating speed of 100r/min for 30min to prepare a mixed solution, soaking the cotton and hemp fibers in the mixed solution, carrying out ultrasonic oscillation in a water bath at 10 ℃ for 10min, controlling the ultrasonic power to be 50W, adding a sodium hydroxide solution with the mass fraction of 10% after the oscillation is finished, stirring at a constant speed, reacting for 2h, carrying out suction filtration, washing with deionized water for three times to prepare treated fibers, and weaving to prepare the deodorant layer.
The buffer layer is made by the following method:
step S11, dispersing montmorillonite in deionized water, stirring at a constant speed of 180r/min for 30min to prepare a suspension, adding cetyl trimethyl ammonium bromide into the deionized water, stirring at a constant speed until the cetyl trimethyl ammonium bromide is completely dissolved, adding hydrochloric acid, continuously stirring until the hydrochloric acid is completely dissolved to prepare a mixed solution, adding the mixed solution into the suspension, transferring the mixed solution into a water bath kettle at the temperature of 60 ℃, stirring for 2h by magnetic force to prepare a precipitate, washing the precipitate with the deionized water until no bromide ion exists, drying to prepare the treated montmorillonite, and controlling the weight ratio of the montmorillonite to the cetyl trimethyl ammonium bromide to the hydrochloric acid to be 1: 2: 0.1;
step S12, adding starch into deionized water, stirring at a constant speed at 50 ℃ until gelatinization to obtain a gelatinized starch solution, adding polyvinyl alcohol into deionized water, heating in an oil bath at 80 deg.C for 30min to obtain polyvinyl alcohol solution, mixing polyvinyl alcohol solution with bagasse fiber, mixing for 30min, sequentially adding calcium carbonate, borax and gelatinized starch solution, stirring at uniform speed for 15min, adding sodium bicarbonate twice at equal amount, kneading until mixing, adding treated montmorillonite, kneading, transferring into a fixed mold, foaming for 20min, taking out, drying at 80 deg.C for 10 hr to obtain buffer layer, controlling weight ratio of starch and deionized water at 1: 10, weight ratio of polyvinyl alcohol and deionized water at 1: 10, and weight ratio of polyvinyl alcohol, bagasse fiber, calcium carbonate, borax, starch, sodium bicarbonate and treated montmorillonite at 0.1: 1: 0.01: 0.02: 0.2: 0.01: 1.
Example 3
A preparation method of a composite energy-absorbing buffering insole comprises the following steps:
firstly, preparing a deodorization layer;
secondly, preparing a buffer layer;
and thirdly, adhering the deodorization layer, the PU base layer and the buffer layer through hot melting.
The deodorization layer is prepared by the following method:
step S1, adding cyanuric chloride and acetone into a three-mouth flask according to the weight ratio of 1: 5, transferring the mixture into an ice water bath after magnetically stirring for 10min, continuing stirring for 10min, then dropwise adding 5% by mass of tetramethylpiperidinol aqueous solution into the three-mouth flask, controlling the dropwise adding time to be 10min, dropwise adding 10% by mass of ammonia water to adjust the pH value, maintaining the pH value of the system to be 8, stirring the mixture for 2h at the rotating speed of 200r/min after the pH value is stable, then performing suction filtration, washing a filter cake for three times by using absolute ethyl alcohol, finally transferring the mixture into a vacuum drying oven at 55 ℃, controlling the vacuum degree of the vacuum drying oven to be-0.10 MPa and the drying time to be 20h, preparing an intermediate, and controlling the weight ratio of cyanuric chloride to the tetramethylpiperidinol aqueous solution to be 1: 1.4;
and S2, adding the intermediate prepared in the step S1 into deionized water according to the weight ratio of 1: 10, stirring at the rotating speed of 100r/min for 30min to prepare a mixed solution, soaking the cotton and hemp fibers in the mixed solution, carrying out ultrasonic oscillation in a water bath at 10 ℃ for 10min, controlling the ultrasonic power to be 50W, adding a sodium hydroxide solution with the mass fraction of 10% after the oscillation is finished, stirring at a constant speed, reacting for 2h, carrying out suction filtration, washing with deionized water for three times to prepare treated fibers, and weaving to prepare the deodorant layer.
The buffer layer is made by the following method:
step S11, dispersing montmorillonite in deionized water, stirring at a constant speed of 180r/min for 30min to prepare a suspension, adding cetyl trimethyl ammonium bromide into the deionized water, stirring at a constant speed until the cetyl trimethyl ammonium bromide is completely dissolved, adding hydrochloric acid, continuously stirring until the hydrochloric acid is completely dissolved to prepare a mixed solution, adding the mixed solution into the suspension, transferring the mixed solution into a water bath kettle at the temperature of 60 ℃, stirring for 2h by magnetic force to prepare a precipitate, washing the precipitate with deionized water until no bromide ion exists, drying to prepare the treated montmorillonite, and controlling the weight ratio of the montmorillonite to the cetyl trimethyl ammonium bromide to the hydrochloric acid to be 1: 2: 0.2;
step S12, adding starch into deionized water, stirring at a constant speed at 50 ℃ until gelatinization to obtain a gelatinized starch solution, adding polyvinyl alcohol into deionized water, heating in an oil bath at 80 deg.C for 30min to obtain polyvinyl alcohol solution, mixing polyvinyl alcohol solution with bagasse fiber, mixing for 30min, sequentially adding calcium carbonate, borax and gelatinized starch solution, stirring at uniform speed for 15min, adding sodium bicarbonate twice at equal amount, kneading until mixing, adding treated montmorillonite, kneading, transferring into a fixed mold, foaming for 20min, taking out, drying at 80 deg.C for 10 hr to obtain buffer layer, controlling weight ratio of starch and deionized water at 1: 10, weight ratio of polyvinyl alcohol and deionized water at 1: 10, and weight ratio of polyvinyl alcohol, bagasse fiber, calcium carbonate, borax, starch, sodium bicarbonate and treated montmorillonite at 0.1: 1: 0.01: 0.02: 0.2: 0.01: 1.
Example 4
A preparation method of a composite energy-absorbing buffering insole comprises the following steps:
firstly, preparing a deodorization layer;
secondly, preparing a buffer layer;
and thirdly, adhering the deodorization layer, the PU base layer and the buffer layer through hot melting.
The deodorization layer is prepared by the following method:
step S1, adding cyanuric chloride and acetone into a three-mouth flask according to the weight ratio of 1: 5, transferring the mixture into an ice water bath after magnetically stirring for 10min, continuing stirring for 10min, then dropwise adding 5% by mass of tetramethylpiperidinol aqueous solution into the three-mouth flask, controlling the dropwise adding time to be 10min, dropwise adding 10% by mass of ammonia water to adjust the pH value, maintaining the pH value of the system to be 8, stirring the mixture for 2h at the rotating speed of 200r/min after the pH value is stable, then performing suction filtration, washing a filter cake for three times by using absolute ethyl alcohol, finally transferring the mixture into a vacuum drying oven at 55 ℃, controlling the vacuum degree of the vacuum drying oven to be-0.10 MPa and the drying time to be 20h, preparing an intermediate, and controlling the weight ratio of cyanuric chloride to the tetramethylpiperidinol aqueous solution to be 1: 1.5;
and S2, adding the intermediate prepared in the step S1 into deionized water according to the weight ratio of 1: 10, stirring at the rotating speed of 100r/min for 30min to prepare a mixed solution, soaking the cotton and hemp fibers in the mixed solution, carrying out ultrasonic oscillation in a water bath at 10 ℃ for 10min, controlling the ultrasonic power to be 50W, adding a sodium hydroxide solution with the mass fraction of 10% after the oscillation is finished, stirring at a constant speed, reacting for 2h, carrying out suction filtration, washing with deionized water for three times to prepare treated fibers, and weaving to prepare the deodorant layer.
The buffer layer is made by the following method:
step S11, dispersing montmorillonite in deionized water, stirring at a constant speed of 180r/min for 30min to prepare a suspension, adding cetyl trimethyl ammonium bromide into the deionized water, stirring at a constant speed until the cetyl trimethyl ammonium bromide is completely dissolved, adding hydrochloric acid, continuously stirring until the hydrochloric acid is completely dissolved to prepare a mixed solution, adding the mixed solution into the suspension, transferring the mixed solution into a water bath kettle at the temperature of 60 ℃, stirring for 2h by magnetic force to prepare a precipitate, washing the precipitate with deionized water until no bromide ion exists, drying to prepare the treated montmorillonite, and controlling the weight ratio of the montmorillonite to the cetyl trimethyl ammonium bromide to the hydrochloric acid to be 1: 2: 0.2;
step S12, adding starch into deionized water, stirring at a constant speed at 50 ℃ until gelatinization to obtain a gelatinized starch solution, adding polyvinyl alcohol into deionized water, heating in an oil bath at 80 deg.C for 30min to obtain polyvinyl alcohol solution, mixing polyvinyl alcohol solution with bagasse fiber, mixing for 30min, sequentially adding calcium carbonate, borax and gelatinized starch solution, stirring at uniform speed for 15min, adding sodium bicarbonate twice at equal amount, kneading until mixing, adding treated montmorillonite, kneading, transferring into a fixed mold, foaming for 20min, taking out, drying at 80 deg.C for 10 hr to obtain buffer layer, controlling weight ratio of starch and deionized water at 1: 10, weight ratio of polyvinyl alcohol and deionized water at 1: 10, and weight ratio of polyvinyl alcohol, bagasse fiber, calcium carbonate, borax, starch, sodium bicarbonate and treated montmorillonite at 0.1: 1: 0.01: 0.02: 0.2: 0.01: 1.
Comparative example 1
In this comparative example, the deodorizing layer was woven from cotton or hemp fibers, as compared with example 1.
Comparative example 2
This comparative example did not have a buffer layer adhered, compared to example 1.
Comparative example 3
The comparative example is a cushioning insole in the market.
The antibacterial properties of the deodorizing layers of examples 1 to 4 and comparative examples 1 and 3 were measured, and the results are shown in table 1 below;
TABLE 1
As can be seen from Table 1 above, the inhibition ratios of examples 1-4 to Escherichia coli were 98.5-98.8%, and Staphylococcus aureus was 99.1-99.3%, and comparative examples 1 and 3 had Escherichia coli inhibition ratios of 55.6-56.8%, and Staphylococcus aureus inhibition ratios of 57.8-58.2%.
The buffer layer for examples 1-4 and comparative example 2 and comparative example 3 had an intrinsic stress of 0.6x105The buffer coefficient under Pa is detected, and the result is shown in the following table 2;
TABLE 2
| Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 2 | Comparative example 3 | |
| Coefficient of buffer | 5.25 | 5.18 | 5.20 | 5.22 | 12.68 | 10.65 |
As can be seen from Table 2 above, the buffer factors of examples 1 to 4 were 5.18 to 5.25, and those of comparative examples 2 to 3 were 10.65 to 12.68.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (6)
1. A composite energy-absorbing buffering insole is characterized by comprising a PU base layer, a deodorization layer compounded on the surface of one side of the PU base layer and a buffering layer compounded on the surface of the other side of the PU base layer;
the deodorization layer is prepared by the following method:
step S1, adding cyanuric chloride and acetone into a three-neck flask according to the weight ratio of 1: 5, transferring the mixture into an ice water bath after magnetic stirring for 10min, continuing stirring for 10min, then dropwise adding 5% by mass of tetramethylpiperidinol aqueous solution into the three-neck flask, controlling the dropwise adding time to be 10min, dropwise adding 10% by mass of ammonia water to adjust the pH value, maintaining the pH value of the system to be 7-8, stirring the mixture for 2h at the rotating speed of 200 and 250r/min after the pH value is stable, then performing suction filtration, washing a filter cake for three times by using absolute ethyl alcohol, finally transferring the filter cake into a vacuum drying box at the temperature of 55-60 ℃, controlling the vacuum degree of the vacuum drying box to be-0.10 MPa and the drying time to be 20h, preparing an intermediate, and controlling the weight ratio of the cyanuric chloride to the tetramethylpiperidinol aqueous solution to be 1: 1-1;
and S2, adding the intermediate prepared in the step S1 into deionized water according to the weight ratio of 1: 10, stirring for 30min at the rotating speed of 100-150r/min to prepare a mixed solution, soaking the cotton and hemp fibers in the mixed solution, carrying out ultrasonic oscillation for 10min in a water bath at the temperature of 10-15 ℃, controlling the ultrasonic power to be 50-60W, adding a sodium hydroxide solution with the mass fraction of 10% after the oscillation is finished, stirring at a constant speed and reacting for 2h, carrying out suction filtration, washing with the deionized water for three times to prepare treated fibers, and weaving to prepare the deodorant layer.
2. The composite energy-absorbing cushioning insole according to claim 1, wherein said odor-resistant layer, PU base layer and cushioning layer are bonded by hot melt.
3. The composite energy-absorbing buffering insole according to claim 1, wherein the thickness of the deodorizing layer is 0.5-1mm, the thickness of the PU base layer is 1-1.5mm, and the thickness of the buffering layer is 0.5-1 mm.
4. The composite energy absorbing cushioning insole according to claim 1, wherein said cushioning layer is made by the method of:
step S11, dispersing montmorillonite in deionized water, stirring at a constant speed of 200r/min for 30min at 180-;
step S12, adding starch into deionized water, stirring at a constant speed at 50-70 ℃ until gelatinization to obtain a gelatinized starch solution, adding polyvinyl alcohol into deionized water, heating in an oil bath kettle at 80-100 ℃ for 30min to obtain a polyvinyl alcohol solution, mixing the polyvinyl alcohol solution with bagasse fibers, mixing for 30min, sequentially adding calcium carbonate, borax and the gelatinized starch solution, stirring at a constant speed for 15min, adding sodium bicarbonate twice in equal amount, kneading until uniform mixing, adding treated montmorillonite, kneading uniformly, transferring to a fixed mold, foaming for 20min, taking out, and drying at 80 ℃ for 10h to obtain the buffer layer.
5. The composite energy-absorbing cushioning insole according to claim 4, wherein the weight ratio of montmorillonite, cetyltrimethylammonium bromide and hydrochloric acid is controlled to 1: 2: 0.1-0.2 in step S11, the weight ratio of starch and deionized water is controlled to 1: 10 in step S12, the weight ratio of polyvinyl alcohol and deionized water is 1: 10, and the weight ratio of polyvinyl alcohol, bagasse fiber, calcium carbonate, borax, starch, sodium bicarbonate and treated montmorillonite is 0.1: 1: 0.01: 0.02: 0.2: 0.01: 1.
6. The method of making a composite energy absorbing cushioning insole according to claim 1, comprising the steps of:
firstly, preparing a deodorization layer;
secondly, preparing a buffer layer;
and thirdly, adhering the deodorization layer, the PU base layer and the buffer layer through hot melting.
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Application publication date: 20210209 |