CN114347579A - Composite material for shoes - Google Patents
Composite material for shoes Download PDFInfo
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- CN114347579A CN114347579A CN202111049328.9A CN202111049328A CN114347579A CN 114347579 A CN114347579 A CN 114347579A CN 202111049328 A CN202111049328 A CN 202111049328A CN 114347579 A CN114347579 A CN 114347579A
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- carbon fiber
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- 239000002131 composite material Substances 0.000 title claims abstract description 51
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 244
- 239000004917 carbon fiber Substances 0.000 claims abstract description 244
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 203
- 239000004744 fabric Substances 0.000 claims abstract description 130
- 229920005989 resin Polymers 0.000 claims abstract description 85
- 239000011347 resin Substances 0.000 claims abstract description 85
- 239000000835 fiber Substances 0.000 claims abstract description 34
- 229920000106 Liquid crystal polymer Polymers 0.000 claims abstract description 21
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 claims abstract description 21
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 24
- 229920006122 polyamide resin Polymers 0.000 claims description 20
- 229920002492 poly(sulfone) Polymers 0.000 claims description 19
- 229920005749 polyurethane resin Polymers 0.000 claims description 17
- 239000004760 aramid Substances 0.000 claims description 16
- 229920006231 aramid fiber Polymers 0.000 claims description 11
- 239000003365 glass fiber Substances 0.000 claims description 10
- 229920003235 aromatic polyamide Polymers 0.000 claims description 7
- 229920012287 polyphenylene sulfone Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 19
- 239000000463 material Substances 0.000 description 19
- 239000004814 polyurethane Substances 0.000 description 13
- 238000005452 bending Methods 0.000 description 8
- 229920002292 Nylon 6 Polymers 0.000 description 6
- 239000012784 inorganic fiber Substances 0.000 description 4
- 229920002302 Nylon 6,6 Polymers 0.000 description 3
- 239000004697 Polyetherimide Substances 0.000 description 3
- 229920005668 polycarbonate resin Polymers 0.000 description 3
- 239000004431 polycarbonate resin Substances 0.000 description 3
- 229920001601 polyetherimide Polymers 0.000 description 3
- 229920013716 polyethylene resin Polymers 0.000 description 3
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 2
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920000491 Polyphenylsulfone Polymers 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- QZUPTXGVPYNUIT-UHFFFAOYSA-N isophthalamide Chemical compound NC(=O)C1=CC=CC(C(N)=O)=C1 QZUPTXGVPYNUIT-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Abstract
A composite for footwear comprising: a first carbon fiber layer impregnated with a first carbon fiber cloth of a first resin, wherein the first carbon fiber cloth comprises carbon fibers, and the content of the first resin is 38 to 55 weight percent based on the total weight of the first carbon fiber layer; a second carbon fiber layer, which is a second carbon fiber cloth impregnated with a second resin, wherein the second carbon fiber cloth comprises carbon fibers, the content of the second resin is 38 to 55 weight percent based on the total weight of the second carbon fiber layer, and the second carbon fiber layer is arranged on the first carbon fiber layer; and an intermediate layer, which is a liquid crystal polymer fiber cloth impregnated with a third resin, wherein the liquid crystal polymer fiber cloth comprises liquid crystal polymer fibers, and the intermediate layer is arranged between the first carbon fiber layer and the second carbon fiber layer. The composite material for shoes can be bent and has the effect of wear resistance, so that the quality of the prepared soles or shoe plates is improved.
Description
Technical Field
The invention relates to a composite material, in particular to a composite material for shoes.
Background
Most of the shoe materials on the market are made of epoxy resin (epoxy resin) or Thermoplastic Polyurethane (TPU), and these two materials have been used as sole materials for nearly two decades. Epoxy and/or TPU shoe materials are widely used in various sports shoes, such as golf shoes, basketball shoes, soccer shoes, cycling shoes, and jogging shoes, to relieve the pressure on the foot and to improve the comfort of the wearer.
However, when the conventional shoe material is used in a single unit, it is easily deteriorated or aged due to environmental factors such as cold and heat changes, humidity changes, or sunlight irradiation; if the shoe is subjected to friction, impact or bending beyond the strength, the shoe plate or the heel may be broken. As a result, the user may be injured during the exercise due to the breakage of the shoe plate or the heel. Therefore, the current shoe materials on the market still need to be improved.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide a composite material for shoes, which has good flexibility and better wear resistance, thereby improving the quality of the shoe material and prolonging the service life thereof, so as to improve the safety of the wearer.
To achieve the above object, the composite material for footwear of the present invention comprises: a first carbon fiber layer impregnated with a first carbon fiber cloth of a first resin, wherein the first carbon fiber cloth comprises carbon fibers; a second carbon fiber layer, which is a second carbon fiber cloth impregnated with a second resin, wherein the second carbon fiber cloth comprises carbon fibers and is arranged on the first carbon fiber layer; and an intermediate layer, which is a liquid crystal polymer fiber cloth impregnated with a third resin, wherein the liquid crystal polymer fiber cloth comprises liquid crystal polymer fibers, and the intermediate layer is arranged between the first carbon fiber layer and the second carbon fiber layer; wherein the first carbon fiber cloth and the second carbon fiber cloth respectively comprise a carbon fiber unidirectional cloth, a carbon fiber woven cloth or a combination thereof; wherein the carbon fiber woven cloth comprises a plain carbon fiber woven cloth, a twill carbon fiber woven cloth, or a combination thereof; and the arrangement mode of the carbon fibers of the twill carbon fiber woven cloth is arranged at an angle of +45 degrees or-45 degrees with a reference axis, at an angle of +60 degrees or-60 degrees with the reference axis, or a combination thereof.
By the technical means, the carbon fibers in the first carbon fiber layer and the second carbon fiber layer have better mechanical strength, so that the structural stability of the shoe material can be maintained, and the effect of protecting the feet of a user is achieved; and the middle layer between the first carbon fiber layer and the second carbon fiber layer has the characteristics of good buffering and high wear resistance, and can be used as an auxiliary for improving the flexibility and the buffering effect of the composite material for shoes.
In some embodiments, the composite material for shoes of the present invention may further include a resin body selectively covering the first carbon fiber layer, the second carbon fiber layer, and the intermediate layer. Preferably, the resin body is made of a fourth resin, and the fourth resin includes polyamide resin (PA), thermoplastic polyurethane resin (TPU), polyetherimide resin (PEI), polysulfone resin (PSU), polyphenylene sulfone resin (PPSU), polyethylene resin (PE), polycarbonate resin (PC), polyacrylonitrile-butadiene-styrene resin (ABS), or a combination thereof.
More specifically, the polyamide resin may further comprise polyamide 6 (obtained by ring-opening polymerization of epsilon-caprolactam, also referred to as nylon 6) and polyamide 66 (obtained by polycondensation of equal amounts of hexamethylenediamine and adipic acid, also referred to as nylon 66).
The composite material for shoes can be adjusted according to the type of the shoe material applied at the rear end, and the tensile strength, the structural stability, the elasticity or the hardness and the like of the composite material for shoes are enhanced by different carbon fiber arrangement modes, mixed use of different carbon fibers or use of different resins; for example, basketball shoes need to have good shock resistance, stability, and flexibility; running shoes need to have certain flexibility and good elasticity; the skate needs to have a certain hardness to prevent the ice skate from being inserted backwards and the like.
When the first carbon fiber layer or the second carbon fiber layer needs to include other types of fibers to reinforce or improve the properties of the composite material for shoes, the first carbon fiber cloth or the second carbon fiber cloth can further include other types of fibers, such as glass fibers or aramid fibers (poly-metaphenylene isophthalamide (MPIA), abbreviated as aramid fibers).
In some embodiments, the first carbon fiber layer may additionally include inorganic fibers such as glass fibers. In some embodiments, the first carbon fiber layer may also additionally include aramid fibers. Similarly, the second carbon fiber layer may additionally include inorganic fibers such as glass fibers, or may additionally include aramid fibers. The amount of the aforementioned additional fibers included in the first carbon fiber layer and/or the second carbon fiber layer is equal to or less than the amount of the carbon fibers.
Specifically, the first carbon fiber cloth may further include glass fibers, aramid fibers, or a combination thereof. Similarly, the second carbon fiber cloth may also further include glass fiber, aramid fiber, or a combination thereof.
Preferably, the first carbon fiber cloth and the second carbon fiber cloth have a density of 45 grams per square meter (gsm) to 272gsm, respectively.
Preferably, the first resin and the second resin may respectively include: polyamide resin (PA); polyurethane resin (PU), such as thermoplastic polyurethane resin (TPU); polysulfone resin (PSU); polyphenylene sulfone resin (PPSU); or a combination thereof. Preferably, the polyurethane resin is thermoplastic polyurethane resin (TPU). The first resin and the second resin may be the same or different.
In some embodiments, the combination of the first resin and the second resin (expressed in the form of first resin/second resin) in the inventive shoe composite is selected from the group consisting of: PA/PA, PA/PU, PA/TPU, PA/PSU, PA/PPSU, PU/PA, PU/PU, PU/TPU, PU/PSU, PU/PPSU, TPU/PA, TPU/PU, TPU/TPU, TPU/PSU, TPU/PPSU, PSU/PA, PSU/PU, PSU/TPU, PSU/PSU, PSU/PPSU, PPSU/PA, PPSU/PU, PPSU/TPU, PPSU/PSU, and PPSU/PPSU.
Preferably, the first resin may be present in an amount of 38 weight percent (wt%) to 55 wt%, such as 38 wt%, 40 wt%, 42 wt%, 50 wt%, or 55 wt%, based on the total weight of the first carbon fiber layer (depending on the thickness of the first carbon fiber layer). Preferably, the second resin may be present in an amount of 38 wt% to 55 wt%, such as 38 wt%, 40 wt%, 42 wt%, 50 wt%, or 55 wt%, based on the total weight of the second carbon fiber layer (depending on the thickness of the second carbon fiber layer).
In some embodiments, the intermediate layer may further include an aromatic polyamide fiber in an amount equal to or less than that of the liquid crystal polymer fiber.
Specifically, the liquid crystal polymer fiber cloth may further include an aromatic polyamide fiber in an amount equal to or less than that of the liquid crystal polymer fiber.
Preferably, the third resin may include the first resin and the second resin, wherein the first resin and the second resin may be the same or different.
According to the present invention, the step of impregnating the intermediate layer with a resin may occur during the process of manufacturing the composite material for footwear of the present invention.
In one embodiment, a lower surface or an upper surface of the intermediate layer may be modified, respectively. The modified lower surface and/or the modified upper surface of the middle layer respectively have good gripping force on the first carbon fiber layer and the second carbon fiber layer. In other words, the modified surface of the intermediate layer has better adhesion to the adjacent first carbon fiber layer and the second carbon fiber layer.
In some embodiments, the first carbon fiber cloth and the second carbon fiber cloth may respectively include a Uni-Directional (UD) cloth, a woven cloth of carbon fibers, or a combination thereof.
In one embodiment, the first carbon fiber cloth may be a carbon fiber unidirectional cloth, and the arrangement of the carbon fibers of the carbon fiber unidirectional cloth may be unidirectional, that is, the arrangement of the carbon fibers of the carbon fiber unidirectional cloth may be parallel to each other.
In one embodiment, the first carbon fiber cloth may include one or more layers of carbon fiber unidirectional cloth, wherein the carbon fibers of each layer of the one or more layers of carbon fiber unidirectional cloth have their respective directions, i.e., the directions of the carbon fibers of the one or more layers of carbon fiber unidirectional cloth may be the same or different from each other. In addition, the density of the first carbon fiber cloth including the one or more layers of carbon fiber unidirectional cloth may be 45gsm to 160 gsm.
In another embodiment, the first carbon fiber cloth may be a carbon fiber woven cloth, and the carbon fiber woven cloth may include a plain carbon fiber woven cloth, a twill carbon fiber woven cloth, or a combination thereof.
According to the present invention, the arrangement of the carbon fibers of the first carbon fiber sheet may be multi-directional, that is, the carbon fibers of the first carbon fiber sheet may be arranged in a plurality of different directions. For example, the first carbon fiber cloth may be a woven cloth of plain carbon fibers, wherein the arrangement of the carbon fibers may be perpendicular to each other (i.e., at an angle of 0 or 90 degrees to the reference axis); alternatively, the first carbon fiber cloth may be a twill carbon fiber woven cloth, wherein the carbon fibers may be arranged at an angle of +45 degrees or-45 degrees with respect to the reference axis, at an angle of +60 degrees or-60 degrees with respect to the reference axis, or a combination thereof. Herein, the reference axis refers to the output direction of the cloth. Further, the density of the first carbon fiber cloth comprising the carbon fiber woven cloth may be 160gsm to 272gsm, such as 160gsm, 180gsm, 190gsm, 200gsm, 210gsm, 220gsm, 240gsm, or 272 gsm.
Similarly, the second carbon fiber cloth may be a carbon fiber unidirectional cloth, and the arrangement of the carbon fibers of the carbon fiber unidirectional cloth may be unidirectional, that is, the arrangement of the carbon fibers of the carbon fiber unidirectional cloth may be parallel to each other.
In one embodiment, the second carbon fiber cloth may include one or more layers of carbon fiber unidirectional cloth, each layer of the one or more layers of carbon fiber unidirectional cloth having its own direction, that is, the directions of the carbon fibers of the one or more layers of carbon fiber unidirectional cloth may be the same or different from each other. In addition, the density of the second carbon fiber cloth including the one or more layers of carbon fiber unidirectional cloth may be 45gsm to 160 gsm.
In another embodiment, the second carbon fiber cloth may be a carbon fiber woven cloth, and the carbon fiber woven cloth may include a plain carbon fiber woven cloth, a twill carbon fiber woven cloth, or a combination thereof.
According to the present invention, the arrangement of the carbon fibers of the second carbon fiber sheet may be multi-directional, that is, the carbon fibers of the second carbon fiber sheet may be arranged in a plurality of different directions. For example, the second carbon fiber cloth may be a woven cloth of plain carbon fibers, wherein the carbon fibers may be arranged perpendicular to each other (i.e., at an angle of 0 or 90 degrees to the reference axis); alternatively, the second carbon fiber cloth may be a twill carbon fiber woven cloth, wherein the carbon fibers may be arranged at an angle of +45 degrees or-45 degrees with respect to the reference axis, at an angle of +60 degrees or-60 degrees with respect to the reference axis, or a combination thereof. Herein, the reference axis refers to the output direction of the cloth. Further, the density of the second carbon fiber cloth comprising the carbon fiber woven cloth may be 160gsm to 272gsm, such as 160gsm, 180gsm, 190gsm, 200gsm, 210gsm, 220gsm, 240gsm, or 272 gsm.
Specifically, the expression "the carbon fibers are arranged at an angle of +45 degrees or-45 degrees with respect to the reference axis" means that the included angle between two adjacent carbon fibers is 90 degrees or 270 degrees; "the carbon fibers are arranged at an angle of +60 degrees or-60 degrees with respect to the reference axis" means that the angle between two adjacent carbon fibers is 120 degrees or 240 degrees.
More preferably, the first carbon fiber cloth or the second carbon fiber cloth may include at least two fabrics selected from the group consisting of: a carbon fiber unidirectional cloth (in which carbon fibers are arranged in parallel), a plain carbon fiber woven cloth (in which carbon fibers are arranged in perpendicular), a twill carbon fiber woven cloth in which carbon fibers are arranged in an intersecting manner of +45 degrees or-45 degrees with respect to a reference axis, a twill carbon fiber woven cloth in which carbon fibers are arranged in an intersecting manner of +60 degrees or-60 degrees with respect to the reference axis, and combinations thereof. Thus, the composite material for shoes can meet the characteristics required by different types of shoe materials. In addition, the composite material for shoes meets the characteristic requirements of shoe materials which can meet different stress modes or different stress degrees.
Drawings
FIG. 1 is a side sectional view of one embodiment of the inventive composite material for footwear.
FIG. 2 is a side sectional view of another embodiment of the inventive composite material for footwear.
Description of the main component symbols:
10 first carbon fiber layer
20 intermediate layer
30 second carbon fiber layer
40 resin body
Detailed Description
Hereinafter, embodiments of the composite material for footwear according to the present invention will be described with reference to several examples, and those skilled in the art can easily understand the advantages and effects of the present invention based on the following examples. It is to be understood that the examples set forth herein are presented by way of illustration of embodiments of the invention and are not intended to limit the scope of the invention, which can be modified or adapted by persons skilled in the art in light of their ordinary knowledge to make or use the teachings of the invention without departing from its spirit.
Composite material for shoes having resin body
Referring to fig. 1, the composite material for shoes of the present invention includes a first carbon fiber layer 10, an intermediate layer 20, a second carbon fiber layer 30, and a resin body 40, wherein the intermediate layer 20 is disposed between the first carbon fiber layer 10 and the second carbon fiber layer 30; the resin body 40 covers the first carbon fiber layer 10, the intermediate layer 20, and the second carbon fiber layer 30.
The main material of the first carbon fiber layer 10 is carbon fiber, and the carbon fiber is prefabricated and formed into a first carbon fiber cloth. The main material of the middle layer 20 is aromatic polyamide fiber, the aromatic polyamide fiber is preformed into an aromatic polyamide fiber cloth, and the middle layer 20 can be used for increasing the flexibility of the composite material for shoes when in use so as to complement the defects that carbon fiber has stronger rigidity and lower flexibility. The main material of the second carbon fiber layer 30 is carbon fiber, and the carbon fiber is prefabricated and formed into a second carbon fiber cloth.
In another embodiment, the first carbon fiber layer may further comprise glass fibers, aramid fibers, or a combination thereof. Similarly, the second carbon fiber layer may also further comprise glass fibers, aramid fibers, or a combination thereof.
Then, the first carbon fiber layer 10, the intermediate layer 20, and the second carbon fiber layer 30 are sequentially disposed in a mold and preheated, then polyamide 6 resin is injected to coat and fix the first carbon fiber layer 10, the intermediate layer 20, and the second carbon fiber layer 30 with polyamide 6 resin, and after the polyamide 6 resin is cooled and molded into a resin body 40, the composite material for shoes of the present invention is obtained.
In another embodiment, the polyamide 6 resin may be substituted with the following resins: a polyamide resin such as polyamide 66, a thermoplastic polyurethane resin, a polyetherimide resin, a polysulfone resin, a polyphenylsulfone resin, a polyethylene resin, a polycarbonate resin, a polyacrylonitrile-butadiene-styrene resin, or a combination thereof.
In addition, in order to meet the requirement of the appearance of the composite material for shoes, the composite material for shoes can also comprise other inorganic fibers or organic fibers. In addition, the color, appearance or properties of the composite material for footwear can be adjusted.
Composite material for shoes without resin body
Referring to FIG. 2, another composite material for shoes according to the present invention includes a first carbon fiber layer 10, an intermediate layer 20, and a second carbon fiber layer 30, wherein the intermediate layer 20 is disposed between the first carbon fiber layer 10 and the second carbon fiber layer 30.
The main material of the first carbon fiber layer 10 is carbon fiber and a first resin, the first resin is selected from PA, PU, TPU, PSU, or PPSU, the carbon fiber is preformed into a first carbon fiber cloth and is impregnated in the first resin. The main material of the middle layer 20 is liquid crystal polymer fiber, the liquid crystal polymer fiber is preformed to form a liquid crystal polymer fiber cloth, and the middle layer 20 can be used for increasing the flexibility of the composite material for shoes when in use so as to complement the defects that carbon fiber has stronger rigidity and lower flexibility. The main material of the second carbon fiber layer 30 is carbon fiber and a second resin, the second resin is selected from PA, PU, TPU, PSU, or PPSU, the carbon fiber is preformed into a second carbon fiber cloth and impregnated in the second resin.
The first carbon fiber cloth and/or the second carbon fiber cloth comprise a carbon fiber unidirectional cloth, a carbon fiber woven cloth or a combination thereof. The carbon fiber woven cloth is a plain carbon fiber woven cloth, a twill carbon fiber woven cloth in which carbon fibers and a reference shaft are arranged in an intersecting manner of +45 degrees or-45 degrees, a twill carbon fiber woven cloth in which carbon fibers and a reference shaft are arranged in an intersecting manner of +60 degrees or-60 degrees, or a combination thereof.
When the first and/or the second carbon fiber cloth comprises one or more layers of carbon fiber unidirectional cloth, the density of the first and/or the second carbon fiber cloth is 45gsm to 160 gsm. When the first and/or the second carbon fiber cloth comprises carbon fiber woven cloth, the density of the first and/or the second carbon fiber cloth is 160gsm to 272 gsm.
The first resin is contained in an amount of 38 to 55 wt% based on the total weight of the first carbon fiber layer. Similarly, the second resin is present in an amount of 38 to 55 wt%, based on the total weight of the second carbon fiber layer.
The first carbon fiber cloth may further include glass fibers, aramid fibers, or a combination thereof. Similarly, the second carbon fiber cloth may also further include glass fiber, aramid fiber, or a combination thereof.
The lower surface and/or the upper surface of the intermediate layer can be further modified, and the modified lower surface and/or the modified upper surface of the intermediate layer respectively have good gripping force on the first carbon fiber layer and the second carbon fiber layer.
The first carbon fiber layer 10 (i.e., the first carbon fiber cloth impregnated with the first resin), the liquid crystal polymer fiber cloth, and the second carbon fiber layer 30 (i.e., the second carbon fiber cloth impregnated with the second resin) are sequentially disposed in a mold, and the mold is heated under a specific pressure to obtain the composite material for shoes of the present invention. During the heating process, the first resin and the second resin are impregnated into the liquid crystal polymer fiber cloth and the liquid crystal polymer fiber cloth is impregnated with the first resin and the second resin to form the intermediate layer 20, and the intermediate layer 20 is a liquid crystal polymer fiber cloth impregnated with the first resin and the second resin.
In addition, in order to meet the requirement of the appearance of the composite material for shoes, the composite material for shoes can also comprise other inorganic fibers or organic fibers. In addition, the color, appearance or properties of the composite material for footwear can be adjusted.
Bending test
The composite for footwear without resin body shown in FIG. 2 was subjected to bending test according to SATRA TM92 and ISO 5423 standards. Conventional footwear materials break after an average of about 7 to 10 thousand bending cycles. However, the composite for shoes shown in FIG. 2 was subjected to a bending test, and when the first resin and the second resin were TPU, the composite for shoes was broken after an average of about 21 ten thousand bending cycles; and when the first resin and the second resin are PA, the composite material for shoes breaks after an average of about 17 ten thousand bending cycles; and when the first resin and the second resin are PSU or PPSU, the composite material for shoes can be broken after more than 30 ten thousand bending cycles.
In addition, similar results can be obtained when the aromatic polyamide fiber is added to the intermediate layer 20 in an amount equal to or less than that of the liquid crystal polymer fiber.
In summary, the composite material for shoes of the present invention achieves high wear resistance by virtue of the high mechanical strength of the first carbon fiber layer 10 and the second carbon fiber layer 30, and achieves a degree of flexibility for reinforcing the entire composite material for shoes by virtue of the middle layer 20, so as to provide a better cushioning effect. In the case where the first carbon fiber layer 10, the intermediate layer 20, and the second carbon fiber layer 30 are fixed and stabilized by the resin body 40, the composite material for shoes according to the present invention can achieve the effect of transferring the stress applied to the carbon fibers. In addition, other types of fibers can be mixed in the first carbon fiber layer 10, the middle layer 20 and the second carbon fiber layer 30 to meet the appearance requirements of different shoe types, and different resins can be used according to the use requirements to match the shoe material properties required by different sports types.
Claims (9)
1. A composite for footwear, characterized in that it comprises:
a first carbon fiber layer impregnated with a first carbon fiber cloth of a first resin, wherein the first carbon fiber cloth comprises carbon fibers, and the content of the first resin is 38 to 55 weight percent based on the total weight of the first carbon fiber layer;
a second carbon fiber layer, which is a second carbon fiber cloth impregnated with a second resin, wherein the second carbon fiber cloth comprises carbon fibers, the content of the second resin is 38 to 55 weight percent based on the total weight of the second carbon fiber layer, and the second carbon fiber layer is arranged on the first carbon fiber layer; and
the middle layer is a liquid crystal polymer fiber cloth impregnated with a third resin, wherein the liquid crystal polymer fiber cloth comprises liquid crystal polymer fibers, and the middle layer is arranged between the first carbon fiber layer and the second carbon fiber layer;
wherein the first carbon fiber cloth and the second carbon fiber cloth respectively comprise a carbon fiber unidirectional cloth, a carbon fiber woven cloth or a combination thereof;
wherein the carbon fiber woven cloth comprises a plain carbon fiber woven cloth, a twill carbon fiber woven cloth, or a combination thereof; and is
The carbon fibers of the twill carbon fiber woven cloth are arranged in an angle of +45 degrees or-45 degrees with a reference axis, in an angle of +60 degrees or-60 degrees with the reference axis, or in a combination of the angles.
2. The composite material for footwear according to claim 1, wherein the first carbon fiber layer and the second carbon fiber layer further comprise glass fibers, aramid fibers, or a combination thereof, respectively.
3. The composite material for footwear according to claim 1, wherein the first carbon fiber cloth and the second carbon fiber cloth each have a density of 45 g/m to 272 g/m.
4. The composite material for footwear according to claim 1, wherein the first resin and the second resin each comprise a polyamide resin, a polyurethane resin, a polysulfone resin, a polyphenylene sulfone resin, or a combination thereof.
5. The composite for footwear according to claim 4, wherein the polyurethane resin is a thermoplastic polyurethane resin.
6. The composite for footwear according to claim 1, wherein the intermediate layer further comprises an aromatic polyamide fiber in an amount equal to or less than that of the liquid crystal polymer fiber.
7. The composite for footwear according to claim 1, wherein the third resin comprises the first resin and the second resin.
8. The composite for footwear according to claim 1, wherein a lower surface and an upper surface of the intermediate layer are modified, respectively.
9. The composite for footwear according to any one of claims 1 to 8, wherein the first carbon fiber cloth and the second carbon fiber cloth each include one or more layers of carbon fiber unidirectional cloth, and directions of carbon fibers of the respective layers of the one or more layers of carbon fiber unidirectional cloth are the same as or different from each other.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/070,233 US11904591B2 (en) | 2018-09-04 | 2020-10-14 | Composite material for footwear |
| US17/070,233 | 2020-10-14 |
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| CN114347579A true CN114347579A (en) | 2022-04-15 |
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| CN202111049328.9A Pending CN114347579A (en) | 2020-10-14 | 2021-09-08 | Composite material for shoes |
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| KR20010001309A (en) * | 1999-06-03 | 2001-01-05 | 조민호 | Composite plate for a shoe |
| US20100028593A1 (en) * | 2007-02-02 | 2010-02-04 | Toray Industries, Inc. | Prepreg base material, layered base material, fiber-reinforced plastic, process for producing prepreg base material, and process for producing fiber-reinforced plastic |
| US20120227282A1 (en) * | 2009-02-06 | 2012-09-13 | Nike, Inc. | Layered Thermoplastic Non-Woven Textile Elements |
| KR20110035217A (en) * | 2009-09-30 | 2011-04-06 | 코오롱인더스트리 주식회사 | Uni-directional sheet and hybrid composite using the same |
| US20200139642A1 (en) * | 2014-12-17 | 2020-05-07 | E.I. Dupont De Nemours And Company | Glass and carbon fiber composites and uses thereof |
| CN107949475A (en) * | 2015-08-18 | 2018-04-20 | 惠普发展公司，有限责任合伙企业 | Composite material |
| CN106493969A (en) * | 2016-09-18 | 2017-03-15 | 中广核俊尔新材料有限公司 | A kind of manufacture craft in safety shoe packet header and the safety shoe packet header of making |
| CN110815966A (en) * | 2018-08-08 | 2020-02-21 | 曾凯熙 | Composite material for shoes |
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| TW202214141A (en) | 2022-04-16 |
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