CN115926303A - Moisture-removing breathable sole material, sole and sports shoe - Google Patents
Moisture-removing breathable sole material, sole and sports shoe Download PDFInfo
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- CN115926303A CN115926303A CN202211715538.1A CN202211715538A CN115926303A CN 115926303 A CN115926303 A CN 115926303A CN 202211715538 A CN202211715538 A CN 202211715538A CN 115926303 A CN115926303 A CN 115926303A
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- sole
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- moisture
- weight
- vinyl acetate
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- 239000000463 material Substances 0.000 title claims abstract description 34
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 52
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 52
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920006124 polyolefin elastomer Polymers 0.000 claims abstract description 11
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 7
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 6
- 239000004088 foaming agent Substances 0.000 claims abstract description 6
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 6
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000008117 stearic acid Substances 0.000 claims abstract description 6
- 239000011787 zinc oxide Substances 0.000 claims abstract description 6
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims abstract description 6
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims description 10
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 2
- 230000000386 athletic effect Effects 0.000 claims description 2
- 239000000454 talc Substances 0.000 claims 1
- 229910052623 talc Inorganic materials 0.000 claims 1
- 235000012222 talc Nutrition 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 238000005187 foaming Methods 0.000 description 21
- 239000004615 ingredient Substances 0.000 description 10
- 238000002156 mixing Methods 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000006260 foam Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010408 sweeping Methods 0.000 description 3
- 239000004604 Blowing Agent Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000004156 Azodicarbonamide Substances 0.000 description 1
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 1
- 235000019399 azodicarbonamide Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The invention provides a moisture-removing breathable sole material which mainly comprises the following preparation raw materials: 58 to 68 portions of ethylene vinyl acetate copolymer, 7 to 10 portions of ethylene propylene diene monomer, 13 to 17 portions of polyolefin elastomer, 5 to 10 portions of active carbon, 8 to 12 portions of talcum powder, 0.4 to 0.6 portion of stearic acid, 0.8 to 1.2 portions of zinc stearate, 1 to 2 portions of zinc oxide, 0.2 to 0.8 portion of cross-linking agent and 2.5 to 3.5 portions of foaming agent. The invention also relates to a sole with the upper sole made of the material. The sole of the present invention, in which moisture and odor from the sole of the foot are discharged from the lateral sides of the upper sole, also ensures the desired mechanical strength and elasticity, wear resistance of the sole.
Description
Technical Field
The invention belongs to the technical field of shoemaking, and particularly relates to a sole material.
Background
At present, a lot of breathable soles are used in the market, most of the soles are combined by an upper sole and a lower sole, and the ventilation mode of the soles generally adopts the mode of arranging exhaust holes to exhaust towards two side walls of the soles or towards the lower part of the soles. The exhaust effect of such a shoe sole is not desirable because the odor and moisture generated in the shoe are mainly generated from the human foot and are mostly concentrated on the upper bottom surface, and the above-mentioned shoe sole does not impact on the upper bottom surface during the exhaust process, and thus the odor and moisture cannot be effectively removed.
The research and development aims at designing the moisture-removing breathable sole which can effectively remove peculiar smell and moisture in the shoe, can increase the stability of the whole shoe and can prolong the service life of the shoe.
Disclosure of Invention
Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a breathable sole material which can be used as an upper sole of a shoe sole, and which can efficiently discharge moisture from the sole of the foot, thereby achieving dehumidifying and deodorizing functions.
In a first aspect of the invention, a moisture-removing and breathable sole material is provided, which is prepared by mainly comprising the following raw materials: 58 to 68 portions of ethylene-vinyl acetate copolymer, 7 to 10 portions of ethylene propylene diene monomer, 13 to 17 portions of polyolefin elastomer, 5 to 10 portions of activated carbon, 8 to 12 portions of talcum powder, 0.4 to 0.6 portion of stearic acid, 0.8 to 1.2 portions of zinc stearate, 1 to 2 portions of zinc oxide, 0.2 to 0.8 portion of cross-linking agent and 2.5 to 3.5 portions of foaming agent.
The activated carbon in the present invention is in the form of granular, preferably spherical particles, and activated carbon particles having a particle diameter of not more than 3mm, preferably 1 to 2 mm. This particle size is advantageous for compatibility with the polymeric materials selected for use in the present invention.
In a preferred embodiment, the ethylene-vinyl acetate copolymer has a vinyl acetate content of 15 to 30% by weight and a number average molecular weight of usually 800 to 5000g/mol.
More preferably, the ethylene-vinyl acetate copolymer consists of 13 to 17 parts by weight of EVA7350M, 37 to 45 parts by weight of EVA7470 and 5 to 8 parts by weight of EVA 7647.
Even more preferably, the polyolefin elastomer is OBC9077.
Through the compounding of the EVA material, the polyolefin elastomer and the ethylene propylene diene monomer in the specific proportion and/or type, the active carbon particles can be combined in the rubber material to keep ideal elasticity, hardness and wear resistance, and the introduction of the active carbon conducts cavities in the foaming material, so that the upper sole material has good air permeability, through holes do not need to be reserved in the sole through mechanical means, and the nonuniformity of the mechanical strength of the sole is avoided.
In the second aspect of the invention, the upper sole is made of the sole material in the first aspect, and the lower sole is made of 55-65 parts by weight of ethylene-vinyl acetate copolymer, 25-35 parts by weight of polyolefin elastomer, 8-12 parts by weight of talcum powder, 0.4-0.6 part by weight of stearic acid, 0.8-1.2 parts by weight of zinc stearate, 1-2 parts by weight of zinc oxide, 0.2-0.8 part by weight of cross-linking agent and 2.5-3.5 parts by weight of foaming agent.
In a preferred embodiment, the ethylene vinyl acetate copolymer in the lower base consists of 47 to 53 parts by weight of EVA7350M and 8 to 12 parts by weight of EVA 7467.
According to the moisture-removing and breathable sole provided by the invention, the polyolefin elastomer in the lower bottom is OBC9077.
According to the moisture-removing and breathable sole provided by the invention, the thickness ratio of the lower sole to the upper sole is 1. In some preferred embodiments, the ratio of the thickness of the lower base to the upper base is 1.
According to the moisture-removing breathable sole provided by the invention, the particle size of the talcum powder is 800-5000 meshes, preferably 1000-4000 meshes, and more preferably 2000-3000 meshes. Thus, the talcum powder with the particle size range is easy to mix and has good filling effect.
According to the moisture-removing and breathable sole provided by the invention, a cross-linking agent suitable for being used in the invention is di-tert-butylperoxyisopropyl benzene (BIPB).
According to the moisture-excluding breathable sole according to the invention, a blowing agent suitable for use in the invention is azodicarbonamide (blowing agent AC).
According to the moisture-removing breathable sole, the EVA foamed lower sole and the EVA foamed upper sole are bonded through the adhesive.
The adhesive of the present invention has no particular requirement, and any adhesive known in the art for EVA foamed shoe soles may be used. For example, JL-6120 EVA available from Polymer adhesive products Ltd.
In a third aspect, the present invention provides an athletic shoe comprising a sole according to the second aspect of the present invention.
The sole according to the present invention, in which the foamed upper sole is formed of a breathable material, moisture and odor from the sole of the foot are discharged from the lateral sides of the upper sole, ensures excellent elasticity, suitable hardness and sufficient wear resistance of the sole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, 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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Hardness of
The hardness of the EVA foam was measured using an ASKER rubber hardness tester manufactured in japan, and the unit thereof was designated as "asker.c".
Density of
The density of the EVA foam material is measured according to standard HG/T2872-2009, and the unit of the density is Mg/m 3 。
DIN abrasion resistance
And measuring the wear resistance of the EVA foaming material according to the standard GB T9867-2008.
Rebound resilience
The resilience of the EVA foam was measured according to ASTM D2632-2001.
Compression set
The compression set of the EVA foam was measured according to HG/T4806-2015, under the condition of 1000-time compression and 2h standing.
Right angle tear strength
The right-angle tear strength of the material was measured according to standard GB/T10808-2008.
Folding endurance
And (3) measuring the folding resistance of the material according to the standard GB/T3903.1-2017.
Tensile strength
The tensile strength and elongation at break of the material were measured according to the standard GB/T10654-2001.
Example 1
The formulation of the moisture-wicking breathable sole is shown in table 1.
TABLE 1 formulation of moisture-removing breathable shoe soles
1. Preparing an EVA foaming lower sole.
1.1 mixing ethylene vinyl acetate copolymer (EVA 7350M, EVA 7467), polyolefin elastomer (OBC 9077), talcum powder, stearic acid, zinc stearate and zinc oxide to form a first ingredient of the EVA foaming lower base.
1.2, putting the first ingredient of the EVA foaming lower bottom into an internal mixer for mixing, carrying out first weight lifting hammer ash sweeping when the first ingredient of the EVA foaming lower bottom is mixed to 70 +/-2 ℃, continuously mixing to 90 +/-2 ℃, carrying out second weight lifting hammer ash sweeping, continuously mixing to 120 +/-2 ℃, and carrying out third weight lifting hammer to obtain the first ingredient of the EVA foaming lower bottom after mixing.
1.3 mixing the raw material cross-linking agent and the foaming agent at the lower bottom of the EVA foaming to obtain a second ingredient at the lower bottom of the EVA foaming, adding the second ingredient into the first ingredient, mixing at 116.5 +/-1.5 ℃, and discharging to obtain the mixed material at the lower bottom of the EVA foaming.
1.4 at the temperature of 75 +/-5 ℃, transferring the mixed EVA foaming lower bottom material to an open mill for thickening once, accelerating the cooling, wherein the thickness is about 10mm, the material is bundled once again, the thickness is about 0.8mm, the material is thickened once again, and the thickness is about 10mm, so that the mixed EVA foaming lower bottom material is obtained.
1.5 putting the milled EVA foaming material at the bottom into a granulator for granulation, wherein the temperatures of a screw of the granulator at the front section, the middle section and a die head are respectively 80 +/-1 ℃, 80 +/-1 ℃ and 85 +/-1 ℃, and the rotating speeds of the screw and a cutter are adjusted to obtain EVA foaming material particles with the thickness of 2-2.5 mm at the bottom.
1.6 the EVA foaming bottom material particles are uniformly stirred according to the ratio of multiplying power (1.7) and are put into a material preparing barrel of an injection machine, and the temperature of a screw of the injection machine is 75 +/-5 ℃. Injecting the mixture into a mold with the temperature of 170-175 ℃ for foaming after injection by an injection machine, starting to calculate the vulcanizing time of the mold until the mixture is full, and setting the vulcanizing time according to the thickness of the shoe-shaped keel. And after about 350 seconds, automatically opening the die, taking out the die, placing the die into a constant temperature box for shaping, and carrying out shaping in 5 sections, wherein the temperature of the first section is 85 +/-1 ℃, the temperature of the second section is 80 +/-1 ℃, the temperature of the third section is 70 +/-2 ℃, the temperature of the fourth section is 60 +/-2 ℃, the temperature of the fifth section is 50 +/-2 ℃, and shaping is carried out to obtain the EVA foamed lower sole.
The hardness of an EVA foaming lower bottom is 70asker.C, and the density is 0.28Mg/m 3 . And observing the section of the lower bottom of the EVA foam by adopting an SEM method, wherein the result shows that the foaming structure is uniform.
2. Preparing an EVA foamed upper sole by adopting a method basically the same as the step 1, wherein the difference is as follows:
2.1 in the mixing of the first ingredient at the upper bottom of the EVA foaming, the second time of lifting the weight and sweeping the ash, and then continuously mixing to 112.5 +/-2.5 ℃.
2.2 adding the second ingredient of the EVA foaming upper substrate, simultaneously adding activated carbon particles, mixing at 112.5 +/-2.5 ℃, and discharging to obtain the mixed EVA foaming upper substrate material. In the invention, the activated carbon is added after the first ingredient is fully mixed, so that the situation that the porous of the activated carbon is completely filled by the main rubber material and the inorganic filler and the ventilation function is lost can be avoided.
3. Taking the EVA foamed lower bottom and the EVA foamed upper bottom out of the thermostat, coating JL-6120 EVA adhesive purchased from the Polymer adhesive industry products company Limited for adhesion, putting the EVA adhesive into a wooden model for shaping to keep the original shape of the sole, and taking out the sole to obtain the dehumidifying breathable sole.
The moisture-removing and breathable sole with the half sole thickness of 13mm, the heel thickness of 25mm and the thickness ratio of the foamed upper sole to the foamed upper sole of 1.
Comparative example 1
The preparation method of example 1 was used to prepare a shoe sole using the following formulation
The parameters of the sole obtained in example 1 were measured, and the results were as follows:
1. hardness: 58asker. C2, density: MAX 0.25, DIN abrasion resistance: MAX 150
4. Tensile strength: MIN 3, tearing: MIN 12, folding endurance: without cracking
7. Compression: MAX 35, rebound: MIN 55 with good air permeability
The sole obtained in comparative example 1 was tested for various parameters, and the results were as follows:
1. hardness: 57asker.c 2, density: MAX 0.25, DIN abrasion resistance: MAX 150
4. Tensile strength: MIN 2, tearing: MIN 10, folding endurance: with cracking
7. Compression: MAX 36, rebound: MIN 55 with good air permeability
The results show that the shoe sole obtained in example 1 has good air permeability and satisfies the requirements in terms of mechanical strength, elasticity, and the like. Comparative example 1 has no significant difference in the breathability of the sole and is slightly inferior to example 1 in the folding, tensile and tear resistance properties.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The moisture-removing breathable sole material mainly comprises the following preparation raw materials: 58 to 68 portions of ethylene-vinyl acetate copolymer, 7 to 10 portions of ethylene propylene diene monomer, 13 to 17 portions of polyolefin elastomer, 5 to 10 portions of activated carbon, 8 to 12 portions of talcum powder, 0.4 to 0.6 portion of stearic acid, 0.8 to 1.2 portions of zinc stearate, 1 to 2 portions of zinc oxide, 0.2 to 0.8 portion of cross-linking agent and 2.5 to 3.5 portions of foaming agent.
2. The moisture-wicking breathable sole material of claim 1 wherein the ethylene vinyl acetate copolymer has a vinyl acetate content of 15 to 30 weight percent and a number average molecular weight of typically 800 to 5000g/mol.
3. The moisture-wicking breathable sole material of claim 3, wherein the ethylene vinyl acetate copolymer consists of 13-17 parts by weight EVA7350M, 37-45 parts by weight EVA7470, and 5-8 parts by weight EVA 7647.
4. The moisture draining breathable sole material according to claim 1, wherein the polyolefin elastomer is OBC9077, preferably the ethylene propylene diene monomer is EPDM3760.
5. A moisture-removing breathable sole for shoes, comprising an upper sole and a lower sole, wherein the upper sole is made of the moisture-removing breathable sole material according to any one of claims 1 to 4; the raw materials for preparing the lower bottom comprise 55 to 65 weight portions of ethylene-vinyl acetate copolymer, 25 to 35 weight portions of polyolefin elastomer, 8 to 12 weight portions of talcum powder, 0.4 to 0.6 weight portion of stearic acid, 0.8 to 1.2 weight portions of zinc stearate, 1 to 2 weight portions of zinc oxide, 0.2 to 0.8 weight portion of cross-linking agent and 2.5 to 3.5 weight portions of foaming agent.
6. The moisture-removing breathable sole for shoes according to claim 5, wherein said ethylene vinyl acetate copolymer in the lower sole consists of 47 to 53 parts by weight of EVA7350M and 8 to 12 parts by weight of EVA 7467.
7. The moisture-excluding breathable sole for shoes according to claim 6, wherein the polyolefin elastomer in the lower sole is OBC9077.
8. Moisture-excluding breathable sole according to claim 5, wherein the ratio of the thicknesses of the lower sole and the upper sole ranges from 1.
9. The moisture-excluding breathable sole for shoes according to any one of claims 5 to 8, wherein the talc has a particle size of 800 to 5000 mesh, preferably 1000 to 4000 mesh, more preferably 2000 to 3000.
10. An athletic shoe comprising the sole of any one of claims 5 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211715538.1A CN115926303A (en) | 2022-12-28 | 2022-12-28 | Moisture-removing breathable sole material, sole and sports shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211715538.1A CN115926303A (en) | 2022-12-28 | 2022-12-28 | Moisture-removing breathable sole material, sole and sports shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115926303A true CN115926303A (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211715538.1A Pending CN115926303A (en) | 2022-12-28 | 2022-12-28 | Moisture-removing breathable sole material, sole and sports shoe |
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| Country | Link |
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| CN (1) | CN115926303A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407593A (en) * | 2007-10-10 | 2009-04-15 | 邱晴棋 | Rubber foaming body and use of rice hull active carbon as rubber foaming additive |
| CN108997661A (en) * | 2018-09-20 | 2018-12-14 | 安踏（中国）有限公司 | A kind of sport footwear high rebound foamed material, preparation method and its application |
| CN112480521A (en) * | 2020-10-14 | 2021-03-12 | 莆田星昌鞋业有限公司 | EVA anti-deformation sole, preparation method and foot arch protection anti-deformation sports shoes |
-
2022
- 2022-12-28 CN CN202211715538.1A patent/CN115926303A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407593A (en) * | 2007-10-10 | 2009-04-15 | 邱晴棋 | Rubber foaming body and use of rice hull active carbon as rubber foaming additive |
| CN108997661A (en) * | 2018-09-20 | 2018-12-14 | 安踏（中国）有限公司 | A kind of sport footwear high rebound foamed material, preparation method and its application |
| CN112480521A (en) * | 2020-10-14 | 2021-03-12 | 莆田星昌鞋业有限公司 | EVA anti-deformation sole, preparation method and foot arch protection anti-deformation sports shoes |
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