KR101662007B1 - An abrasion resistive rubber composition for shoes outsole and method for thereof - Google Patents
An abrasion resistive rubber composition for shoes outsole and method for thereof Download PDFInfo
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- KR101662007B1 KR101662007B1 KR1020150042147A KR20150042147A KR101662007B1 KR 101662007 B1 KR101662007 B1 KR 101662007B1 KR 1020150042147 A KR1020150042147 A KR 1020150042147A KR 20150042147 A KR20150042147 A KR 20150042147A KR 101662007 B1 KR101662007 B1 KR 101662007B1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L21/00—Compositions of unspecified rubbers
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- C08K3/0033—
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2410/00—Soles
Abstract
Description
The present invention relates to a rubber composition for a shoe outsole having excellent abrasion resistance and a method of manufacturing the rubber composition. More particularly, the present invention relates to a rubber composition for a shoe outsole, which comprises powdery polytetrafluoroethylene The present invention relates to a high abrasion-resistant rubber composition for a shoe outsole and a method of manufacturing the same, which have remarkably improved abrasion resistance.
Outsole is the outermost part of the shoe that is in direct contact with the ground. It is also commonly referred to as an outsole or outsole. Since the main role of these outsole is to support the shoe and to prevent friction and wear directly from the external environment, high friction of the outsole itself and high abrasion resistance are required. Since the outsole is the most important component of the shoe that is most sensitive to the external conditions such as the condition and characteristics of the ground and the effect is primarily transmitted, the high frictional force and high wear resistance of the shoe outsole rubber are important physical .
Currently, rubber materials used for these shoe outsole are selected from a variety of natural rubber and synthetic rubber depending on the purpose and purpose. As a representative example, isobutyl-isoprene rubber (IIR) having a relatively high friction coefficient is generally used when propulsion force or friction force is important among rubber sole properties, and when abrasion resistance is more important than frictional force, butadiene rubber Butadiene rubber (BR), and styrene-butadiene rubber (SBR) are mainly used when the abrasion resistance and the coefficient of friction are sufficient.
Generally, in the case of a rubber composition for a shoe outsole having abrasion resistance characteristics, a base rubber which is used alone or mixed with natural rubber, synthetic rubber or the like is used as a base material and a silane coupling agent, an accelerator, a reinforcing filler, It is common to mix and use various additives.
Herein, Korean Patent Laid-Open Publication No. 10-1998-0029566 discloses a method of manufacturing a rubber material for a shoe outsole by mixing a material such as ethylene vinyl acetate, a high-polarity polymer and stearic acid, A technique for manufacturing a shoe outsole with improved wear resistance has been disclosed. However, there has been a problem that wear resistance is not sufficient,
Korean Patent Laid-Open Publication No. 10-2014-0084885 discloses a process for producing an abrasion-resistant combed leather outsole which is manufactured by mixing synthetic rubber, carbon black, accelerator, vulcanizing agent and process oil, However, when the rubber for footwear is manufactured by using the carbon black as a rubber composition, physical properties such as abrasion resistance of the produced rubber for shoe outsole are relatively excellent. However, The black color is restricted to the black color so that the black color shoe can not be manufactured.
Here, polytetrafluoroethylene (PTFE) is a colorless, odorless semi-crystalline polymer produced by chain polymerization of tetrafluoroethylene monomer by a free radical polymerization method.
Polytetrafluoroethylene was discovered by Du Pont in 1938 and was patented in 1941 and is still widely used and used in various fields around the world under the trade name of Teflon.
Polytetrafluoroethylene is well known for its chemical resistance and insulation properties, which has a heat resistance from -270 ° C to 300 ° C and low temperature durability due to a very strong C-F bond. In addition, it has excellent non-adhesiveness due to strong hydrophobicity and low surface energy due to -F atom and has very low coefficient of friction due to interatomic repulsion.
At present, there are few cases in which the rubber for shoe outsole is manufactured by applying the excellent physical properties of polytetrafluoroethylene, and there is no accurate manufacturing method guideline .
Accordingly, it is an object of the present invention to provide a rubber composition for producing a rubber for a shoe outsole having remarkable wear resistance, and a method of manufacturing the rubber composition.
In order to achieve the above object, the rubber for a shoe outsole of the present invention comprises 0.1 to 50 parts by weight of polytetrafluoroethylene (PTFE) powder per 100 parts by weight of a rubber base material; 5 to 80 parts by weight of a filler; And 0.05 to 30 parts by weight of an additive.
Preferably, the rubber base material is at least one selected from the group consisting of natural rubber, butadiene rubber (BR), styrene-butadiene rubber (SBR), nitrile-butadiene rubber (NBR), ethylene-propylene rubber (EPR), ethylene- Isobutylene-isoprene rubber (IIR), and ethylene vinyl acetate (EVA).
Preferably, the polytetrafluoroethylene (PTFE) powder has an average particle size of 1 to 10 μm and a specific surface area (BET) of 1 to 15 m 2 / g.
Preferably, the filler is at least one selected from the group consisting of silica, carbon black, white carbon, calcium carbonate, magnesium carbonate, silicate, kaolin, diatomaceous earth, asbestos powder, mica powder, graphite, aluminum oxide and talc Wherein the filler has an average particle size of 3 to 30 μm and a specific surface area (BET) of 50 to 300 m 2 / g.
Preferably, the additive may include at least one selected from the group consisting of a metal oxide, a silane coupling agent, a dispersant, a fatty acid, an accelerator, a crosslinking agent, and a vulcanizing agent.
Further, a coloring material which is preferably applied to an outsole of a shoe can be further added.
A method for manufacturing a rubber for a shoe outsole according to an embodiment of the present invention includes the steps of preparing a first rubber mixture by mixing and kneading a rubber base material and an additive using a Kneader mixer; Adding a vulcanizing agent, an accelerator and a polytetrafluoroethylene powder to the first rubber mixture and preparing a second rubber mixture by using an open roll mill; Preparing the second rubber mixture in the form of a sheet; Press molding a second rubber mixture in the form of a sheet; .
A method for manufacturing a rubber for a shoe outsole according to this embodiment of the present invention comprises the steps of: kneading a rubber base material, an additive and a polytetrafluoroethylene powder to prepare a first rubber mixture using a Kneader mixer; Adding a vulcanizing agent and an accelerator to the first rubber mixture to prepare a second rubber mixture using an open roll mill having a surface temperature of 20 to 150 ° C; Preparing the second rubber mixture in the form of a sheet; Press molding a second rubber mixture in the form of a sheet; .
Preferably, the set temperature condition in the step of preparing the first rubber mixture using the Kneader mixer is 20 to 150 ° C, the set mixing time is 1 to 10 minutes The set temperature condition in the step of preparing the second rubber mixture using the open roll mill is 20 to 150 ° C, the set temperature condition of the press molding step is 100 to 180 ° C, 180 kg / cm 2 , and the setting vulcanization time may be t90.
The rubber composition for shoes according to the present invention and the rubber for shoe outsole according to the method of the present invention have remarkable wear resistance characteristics compared to conventional rubber compositions and simplify the manufacturing process of high abrasion resistance rubber. In addition, it shows abrasion resistance equal to or higher than that of a rubber to which a conventional carbon black is added, even though it does not have a specific color such as carbon black, and has an effect of taking into consideration the fashionability of a shoe outsole. Also exhibits excellent abrasion resistance and tear strength, so that it is possible to reduce the weight of the rubber for shoe outsole.
1 is a flowchart illustrating a method of manufacturing a highly wear-resistant rubber for a shoe outsole according to an embodiment of the present invention.
2 is a flowchart illustrating a method of manufacturing a highly wear-resistant rubber for a shoe outsole according to an embodiment of the present invention.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.
While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And is not limited to the embodiments described herein.
Prior to that, terms and words used in the present specification and claims are not intended to be limiting, nor should they be construed in a conventional or dictionary sense, and that the inventor shall, in order to best explain his invention in the best possible way It should be construed in the meaning and concept consistent with the technical idea of the present invention based on the principle that the concept of the term can be properly defined.
Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and they do not represent all the technical ideas of the present invention. Therefore, It should be understood that various changes and modifications may be made.
Hereinafter, a highly abrasion-resistant rubber composition for shoe outsole according to the present invention and a method for producing the same will be described in detail.
The present invention relates to a high abrasion-resistant rubber composition for a shoe outsole comprising a rubber base, a polytetrafluoroethylene (PTFE) powder, a filler, and an additive, and a method for producing the rubber, Wherein the composition comprises 0.1 to 50 parts by weight of a polytetrafluoroethylene (PTFE) powder per 100 parts by weight of the rubber base material; 5 to 80 parts by weight of a filler; And 0.05 to 30 parts by weight of an additive. The present invention also provides a highly wear-resistant rubber composition for shoe outsole.
Hereinafter, the rubber composition for shoe outsole of the present invention will be described in detail.
The rubber base material of the present invention is not particularly limited, and can be preferably used as long as it can be used for a shoe outsole commonly known in the rubber industry.
Typical examples of the rubber base used for the shoe outsole include natural rubber, butadiene rubber (BR), styrene-butadiene rubber (SBR), nitrile-butadiene rubber (NBR), ethylene- (EPDM) isobutyl-isoprene rubber (IIR), and ethylene vinyl acetate (EVA). Preferably, the rubber base material of the present invention may contain at least one member selected from the group consisting of nitrile- Butadiene (NBR) rubber may be used, but the present invention is not limited thereto.
The physical properties of the rubber for shoe outsole may vary depending on the glass transition temperature (Tg) of the rubber base material. The glass transition temperature of the rubber base material may be -150 to 20 ° C, preferably -65 ° C to 10 ° C Lt; 0 > C. When the glass transition temperature (Tg) of the rubber base material is -150 ° C or less, the abrasion resistance can be improved due to the increase in the elastic region in the polymer viscoelastic behavior, but the mechanical strength can be lowered On the contrary, when the glass transition temperature of the rubber base material is 20 DEG C or higher, excellent mechanical strength may be exhibited, but the abrasion resistance may be deteriorated.
The polytetrafluoroethylene (PTFE) powder of the present invention has heat resistance and low-temperature durability and is excellent in chemical resistance, insulation and abrasion resistance, thereby remarkably improving the wear resistance of the rubber for shoe outsole of the present invention .
In order to attain the object of producing the rubber for shoe outsole having high abrasion resistance of the present invention, it is preferable that the polytetrafluoroethylene powder includes 0.1 to 50 parts by weight of polytetrafluoroethylene powder relative to 100 parts by weight of the rubber base material By weight, more preferably 1 to 10 parts by weight.
When the polytetrafluoroethylene powder is contained in an amount of 0.1 parts by weight or less out of the weight range, there is a problem that the effect of improving the abrasion resistance of the rubber for shoe outsole is remarkably deteriorated. On the other hand, the polytetrafluoroethylene powder Is contained in an amount exceeding 50 parts by weight, the wear resistance of the rubber for shoe outsole may not be greatly improved, and mechanical strength may be lowered. Therefore, Is preferable in terms of producing a high abrasion-resistant rubber for a shoe outsole.
The polytetrafluoroethylene powder may have an average particle size of 1 to 10 μm and a specific surface area (BET) of 1 to 15 m 2 / g.
If the polytetrafluoroethylene powder is out of the above-mentioned range of the average particle size and the specific surface area, there is a problem that the rubber mixture for shoe outsole is not easily mixed and dispersed. Therefore, In order to ensure effective mixing and dispersibility of the fluoroethylene powder, it is preferable to observe the above-mentioned average particle diameter and specific surface area range.
The filler of the present invention is used as a filler for the purpose of significantly improving physical properties such as tensile strength, tear strength and hardness of a rubber for shoe outsole.
In order to attain the object of producing the rubber for shoe outsole having high abrasion resistance of the present invention, the filler preferably comprises 5 to 80 parts by weight, more preferably 20 to 40 parts by weight, based on 100 parts by weight of the rubber base material .
If the filler is contained in an amount exceeding 5 parts by weight, the effect of improving the abrasion resistance of the rubber may be significantly reduced. On the other hand, if the amount exceeds 80 parts by weight, It is in a rectified state in which the abrasion resistance of the rubber is not greatly improved. Therefore, it is preferable from the viewpoint of manufacturing a high abrasion resistance rubber for a shoe outsole that the above-mentioned weight range is adhered.
The filler is not particularly limited, and can be preferably used as long as it can be used as a filler for shoe outsole in the rubber industry.
Exemplary materials that can be used as a filler of the rubber composition for shoe outsole include silica, carbon black, white carbon, calcium carbonate, magnesium carbonate, silicate, kaolin, diatomaceous earth, asbestos powder, mica powder, graphite, aluminum oxide and talc The filler according to the present invention may include at least one member selected from the group consisting of silica and silica. Preferably, the filler of the present invention may be silica having an effect of improving cutting characteristics, chipping characteristics, tearing resistance and abrasion resistance However, the present invention is not limited thereto.
Here, since a large number of silanol groups are present on the surface of the silica, the interaction between the silica aggregates is very strong, so that they may not be easily dispersed in the non-polar rubber.
The silanol groups on the silica surface adsorb them by hydrogen bonding with polar organic substances present in the rubber composite material. In particular, most of the vulcanization accelerators used in rubber compounds contain amine groups as their functional groups. Therefore, Strong hydrogen bonds can be formed and adsorbed on the surface can be obtained.
Here, the average particle diameter of the filler may be 3 to 30 nm and the specific surface area (BET) may be 50 to 300 m 2 / g.
When the filler is out of the average particle diameter and specific surface area range, problems may occur that it is not easily dispersed in the rubber mixture. Therefore, in order to exhibit effective dispersibility of the filler in the rubber mixture, the average particle diameter and specific surface area range .
The additive of the present invention may further include 0.05 to 30 parts by weight of additives used in the conventional rubber industry such as metal oxides, silane coupling agents, dispersants, fatty acids, accelerators, crosslinking agents and vulcanizing agents.
The metal oxide of the additive of the present invention may be any metal oxides commonly used in the known rubber industry. Typical examples of the metal oxide include at least one selected from the group consisting of zinc oxide, cadmium oxide, magnesium oxide, silver oxide, tin oxide, lead oxide and calcium oxide. It is not. The metal oxide may include 0.5 to 10 parts by weight based on 100 parts by weight of the rubber base material to achieve the purpose of producing a rubber for shoe outsole having high abrasion resistance.
Among the additives of the present invention, the silane coupling agent is a silane coupling agent which has an organic functional group that chemically bonds with a hydrolytic group and an organic material (organic synthetic resin) having affinity and reactivity with an inorganic material (inorganic filler, glass and metal, etc.) It can be used to combine organic and inorganic materials in a mixture of organic and inorganic materials.
The silane coupling agent may include 0.5 to 10 parts by weight based on 100 parts by weight of the rubber base material in order to attain the object of producing the rubber for shoe outsole having high abrasion resistance of the present invention.
If the silane coupling agent is contained in an amount of 0.5 part by weight or more out of the above weight range, there is a problem that the effect of improving the abrasion resistance of the rubber is significantly lowered. On the other hand, if the amount exceeds 10 parts by weight The abrasion resistance of the rubber is not greatly improved and the mechanical strength may be lowered. Therefore, it is preferable from the viewpoint of producing a highly abrasion-resistant rubber for a shoe outsole that the above weight range is adhered.
The silane coupling agent is not particularly limited in its kind and can be preferably used as long as it can be used as a silane coupling agent for a rubber composition for a shoe outsole in a known rubber industry.
Representative examples of materials usable as the silane coupling agent of the rubber composition for shoe outsole include vinyl silane, epoxy silane, amino silane, methacryloxy silane, chloropropyl silane and mercaptosilane One or more selected from the group consisting of
The vinyl silane may be exemplified by vinyl trichlorosilane, vinyltrimethoxysilane, and vinyltriethoxysilane. The epoxy silane may be exemplified by? -Glycidoxypropylmethyldioxysilane,? -Glycidyl Isopropyltrimethoxysilane and? -Glycidoxypropyltriethoxysilane, and the amino-based silane may be? -Aminopropyltrimethoxysilane,? -Aminopropyltriethoxysilane, or the like. And the methacryloylcyclotrisilane may be exemplarily exemplified by? -Methacryloxypropyltriethoxysilane and? -Methacryloxypropyltrimethoxysilane, and the chloropropylsilane may be exemplified by? - chloropropyltriethoxysilane can be exemplified, and the mercaptosilane is exemplified by? -Mercaptopropyltrimethoxysilane However, the present invention is not limited thereto.
The dispersant of the present invention may be any dispersant that can be used as a dispersant of a rubber composition for a shoe outsole in a known rubber industry, but a dispersant such as polyethylene glycol (PEG) may be more preferably used .
The dispersing agent may include 0.5 to 5 parts by weight based on 100 parts by weight of the rubber base material.
If the amount of the dispersant is less than 0.5 parts by weight, the dispersion of the filler and the polytetrafluoroethylene powder may not be easily performed. On the other hand, if the dispersant is in the weight range If it exceeds 5 parts by weight, it is possible to reach a rectification state in which the dispersibility is not greatly improved. Therefore, it is preferable from the viewpoint of producing a high abrasion-resistant rubber for a shoe outsole to adhere to the weight range.
Among the above additives, the fatty acid may be any one which can be used as a fatty acid of a rubber composition for a shoe outsole in a known rubber industry. Typical examples thereof include stearic acid and the like. But is not limited thereto. The fatty acid may include 0.1 to 5 parts by weight based on 100 parts by weight of the rubber base material.
The vulcanizing agent of the present invention may be any vulcanizing agent as long as it can be used as a fatty acid of a rubber composition for shoe outsole in the known rubber industry. Typically, sulfur or insoluble sulfur is used But the present invention is not limited thereto. The vulcanizing agent may include 0.1 to 5 parts by weight based on 100 parts by weight of the rubber base material.
The crosslinking agent of the present invention may be an organic peroxide or the like, but the present invention is not limited thereto. The crosslinking agent may include 0.1 to 5 parts by weight based on 100 parts by weight of the rubber base material.
The accelerators of the present invention can be used for accelerating vulcanization (vulcanization) speed in rubber production for shoe outsole, shortening vulcanization (vulcanization) time, lowering vulcanization (vulcanization) The effect of improving the quality of the rubber product is exhibited.
In order to achieve the object of producing the rubber for shoe outsole having high abrasion resistance of the present invention, the promoter of the present invention preferably comprises 0.1 to 20 parts by weight, more preferably 1 to 10 parts by weight, More preferably, it contains a part by weight.
When the promoter is contained in an amount of 0.1 parts by weight or more out of the weight range, there is a problem that the effect of improving the abrasion resistance of the rubber is remarkably deteriorated. On the other hand, The abrasion resistance of the rubber is not greatly improved, and the mechanical strength may be lowered. Therefore, it is preferable to observe the above weight range.
The accelerator is not particularly limited, but is preferably selected from the group consisting of a thiazole-based accelerator, a Thiuram-based accelerator, a Guanijine-based accelerator, and a thiourea-based accelerator At least one or more of them may be used.
The present invention is a rubber for a shoe outsole, and a material having various colors may be further added to match the color requirements of various shoe users. The color material may be included in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the rubber base material.
The high wear-resistant rubber composition for a shoe outsole of the present invention may contain various additives according to the needs of the user within a range not contrary to the ultimate purpose of the present invention, in addition to the additives mentioned in the above- It is clear that various equivalents may exist.
Hereinafter, a method of manufacturing a highly wear-resistant rubber for a shoe outsole according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
1 is a flowchart illustrating a method of manufacturing a highly wear-resistant rubber for a shoe outsole according to an embodiment of the present invention.
1, first, a rubber base material, additives (metal oxide, silane coupling agent, dispersant, fatty acid, etc.) are kneaded at 20 to 100 ° C for 1 to 10 minutes using a Kneader Mixer, (S120).
A vulcanizing agent, an accelerator, and a polytetrafluoroethylene powder are added to the first rubber mixture and uniformly dispersed using an open roll mill having a surface temperature of 20 to 150 DEG C to prepare a second rubber mixture (S130 ).
The second rubber mixture is prepared in the form of a sheet having a thickness of 1 to 10 mm (S140).
The sheet (Sheet) the second rubber mixture in the form of a temperature of 100 to 180 ℃, by press forming with a pressure of 50 to 180kg / cm 2, the conditions of the vulcanization time t90, to produce a high wear-resistant rubber outsole for shoes (S150).
2 is a flowchart illustrating a method of manufacturing a highly wear-resistant rubber for a shoe outsole according to an embodiment of the present invention.
The rubber base material, additives (metal oxide, silane coupling agent, dispersant, fatty acid, etc.) and polytetrafluoroethylene powder were kneaded at 20 to 100 ° C for 1 to 10 minutes using a Kneader Mixer to prepare a first rubber mixture (S220).
A vulcanizing agent and an accelerator are added to the first rubber mixture and uniformly dispersed using an open roll mill having a surface temperature of 30 to 150 ° C to prepare a second rubber mixture (S230).
The second rubber mixture is prepared in the form of a sheet having a size of about 1 to 10 mm (S240).
The sheet (Sheet) the second rubber mixture in the form of a temperature of 100 to 180 ℃, by press forming with a pressure of 50 to 180kg / cm 2, the conditions of the vulcanization time t90, to produce a high wear-resistant rubber outsole for shoes (S250).
Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the following examples should not be construed as limiting the present invention, but rather illustrate the present invention. Should be considered. The scope of the present invention is defined by the appended claims rather than by the description below, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.
< Manufacturing example > Shoes For outsole Using the composition High abrasion resistance Manufacture of rubber specimens
The following materials are prepared for the examples.
Rubber base: Acrylonitrile-butadiene rubber, Kumho Petrochemical manufacturing
Polytetrafluoroethylene powder: manufactured by GCC
Filler: Silica, manufactured by Rhodia
Silane coupling agent: vinyltriethoxysilane, manufactured by Ebonik
Metal oxide: zinc oxide, manufactured by PJ Chemtech
Dispersing agent: Polyethylene glycol, KPI X-Green Chemical
Accelerator: thiazole-based and thiuram-based accelerator, manufactured by Dong Yang Chemical Co., Ltd.
Vulcanizing agent: sulfur, Miwon chemical production
Example One
Acrylonitrile butadiene rubber, polyethylene tetrafluoroethylene powder, zinc oxide, silica, polyethylene glycol, silane coupling agent and stearic acid were kneaded in a kneader mixer at 100 ° C for 3 minutes in the contents shown in Table 1 below. Thereafter, an accelerator and sulfur were charged into an open roll mill having a surface temperature of 70 ° C and dispersed uniformly. Thereafter, a sheet having a thickness of 3 mm was prepared and then measured with a vulcanization time measuring device under the conditions of 155 ° C and 150 kg / The rubber specimens for shoe outsole were produced by press forming during the optimum vulcanization time t90.
Example 2
Acrylonitrile butadiene rubber, zinc oxide, silica, polyethylene glycol, silane coupling agent and stearic acid were kneaded in a kneader mixer at 100 ° C for 3 minutes in the contents shown in Table 1 below. After that, accelerator, sulfur and polytetrafluoroethylene powder were put into an open roll mill having a surface temperature of 70 ° C to be uniformly dispersed. Thereafter, a sheet having a thickness of 3 mm was prepared, and then the sheet was conditioned under conditions of 155 캜 and 150 kg / The rubber specimens for shoe outsole were produced by press forming during the optimum vulcanization time (t90) as measured by a vulcanization time measuring machine.
Comparative Example One
As shown in the following Table 1, a rubber for shoe outsole was manufactured in the same manner as in Example 1, and rubber specimens for a shoe outsole without polyether fluoroethylene powder were prepared from the compositions.
Comparative Example 2
As shown in the following Table 1, a rubber for shoe outsole was manufactured in the same manner as in Example 1, and a rubber specimen for a shoe outsole was manufactured by increasing the content ratio of poly (ethylene fluoroethylene) powder in the composition.
Comparative Example 3
As shown in the following Table 1, a rubber for a shoe outsole was produced in the same manner as the comparative example 1 except that an acrylonitrile rubber base was not used but a butadiene rubber was used to prepare a rubber sample for a shoe outsole.
Unit: parts by weight
< Test Example > Manufactured Shoes For outsole Characterization of rubber specimens
The specimens for shoe outsole prepared in Examples 1, 2 and Comparative Examples 1 to 3 were tested for their properties in the following manner, and the results are shown in Table 2 below.
Hardness: The hardness was measured using Asker A type hardness meter according to KS M5619, which is a method for testing hardness in physical test methods of Korean industry standard vulcanizate rubbers.
Tensile strength: The tensile strength was measured using an Instron universal testing machine according to KS M6518, a method for testing tensile strength in physical test methods of Korean industry standard vulcanizate rubbers.
Tearing strength: Measured using a universal testing machine of Zwick, according to KS M6518, which is a method for testing the tear strength of Korean industry standard vulcanized rubber physical test methods.
Elongation: Measured using an Instron universal testing machine according to KS M6518, a method of testing elongation in physical test methods of Korean industry standard vulcanizate rubbers.
NBS abrasion rate: Using the NBS abrasion tester (ASTM 1630), the abrasion resistance was calculated as shown in the following equation (1).
Referring to Table 2, when compared with Comparative Example 1 in which polytetrafluoroethylene powder was not added and Example 1 in which 5 parts by weight of polytetrafluoroethylene powder was added as the total composition, it was found that the abrasion resistance And the effect of the increase in the amount of the water.
Comparing Comparative Example 1 in which polytetrafluoroethylene powder was not added and Example 1 containing 5 parts by weight of polytetrafluoroethylene powder showed that the tearing strength was improved by about 15% The amount of the reinforcing filler can be reduced, and the specific gravity of the rubber for the shoe outsole can be lowered, so that it is possible to reduce the weight.
In the case of Comparative Example 3 in which a rubber for shoe outsole was produced by using a butadiene rubber having excellent abrasion resistance without using an acrylonitrile rubber base material as in Example 1, it was used as an acrylonitrile rubber base material, Compared with Comparative Example 1 in which fluorine ethylene powder was used and Comparative Example 1 in which polytetrafluoroethylene powder was not used, abrasion resistance was superior to Comparative Example 1, but abrasion resistance was poor in comparison with Example 1, It can be seen that Comparative Example 3 applied exhibits lower physical properties than Example 2 and Comparative Example 1 applied to the acrylonitrile rubber base material.
Comparing Comparative Example 2 and Example 1 in which the content ratio of polytetrafluoroethylene powder is increased, it can be seen that the abrasion resistance of the rubber for shoe outsole increases proportionally as the content ratio of polytetrafluoroethylene powder increases.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the exemplary embodiments, but, on the contrary, Therefore, the scope of the present invention is not limited to the embodiments and the accompanying drawings.
Claims (9)
0.1 to 50 parts by weight of polytetrafluoroethylene (PTFE) powder;
5 to 80 parts by weight of a filler;
0.05 to 30 parts by weight of an additive; And
0.01 to 5 parts by weight of a color-imparting substance,
In the rubber base,
At least one member selected from the group consisting of acrylonitrile-butadiene rubber (NBR), butadiene rubber (BR), ethylene-propylene rubber (EPR), ethylene-propylene-diene rubber (EPDM) and ethylene vinyl acetate ≪ / RTI &
Wherein the polytetrafluoroethylene (PTFE) powder has an average particle size of 1 to 10 占 퐉 and a specific surface area (BET) of 1 to 15 m 2 / g.
Preferably,
At least one selected from the group consisting of silica, carbon black, white carbon, calcium carbonate, magnesium carbonate, silicate, kaolin, diatomaceous earth, asbestos powder, mica powder, graphite, aluminum oxide and talc,
Wherein the filler comprises 5 to 80 parts by weight based on 100 parts by weight of the rubber base material,
Wherein the filler has an average particle diameter of 3 to 30 占 퐉 and a specific surface area (BET) of 50 to 300 m 2 / g.
The additive includes at least one selected from the group consisting of a metal oxide, a silane coupling agent, a dispersant, a fatty acid, an accelerator, a crosslinking agent, and a vulcanizing agent,
Wherein the metal oxide and the silane coupling agent each independently comprise 0.5 to 10 parts by weight based on 100 parts by weight of the rubber base material;
The dispersant among the additives includes 0.5 to 5 parts by weight based on 100 parts by weight of the rubber base material;
The fatty acid, the crosslinking agent and the vulcanizing agent of the additive each independently include 0.1 to 5 parts by weight based on 100 parts by weight of the rubber base material;
Wherein the accelerator of the additive comprises 0.1 to 20 parts by weight based on 100 parts by weight of the rubber base material.
Adding a vulcanizing agent and an accelerator to the first rubber mixture to prepare a second rubber mixture at 20 to 150 캜 using an open roll mill;
Preparing the second rubber mixture in the form of a sheet;
The sheets (sheet) form of the second rubber mixture temperature is 100 to 180 ℃, the pressure comprises the steps of press-molding at 50 to 180 kg / cm 2; / RTI >
Wherein the polytetrafluoroethylene (PTFE) powder has an average particle diameter of 1 to 10 μm and a specific surface area (BET) of 1 to 15 m 2 / g.
Adding a vulcanizing agent, an accelerator and a polytetrafluoroethylene powder to the first rubber mixture and preparing a second rubber mixture at 20 to 150 캜 using an open roll mill;
Preparing the second rubber mixture in the form of a sheet;
The sheets (sheet) form of the second rubber mixture temperature is 100 to 180 ℃, the pressure comprises the steps of press-molding at 50 to 180 kg / cm 2; / RTI >
Wherein the polytetrafluoroethylene (PTFE) powder has an average particle diameter of 1 to 10 μm and a specific surface area (BET) of 1 to 15 m 2 / g.
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| KR1020150042147A KR101662007B1 (en) | 2015-03-26 | 2015-03-26 | An abrasion resistive rubber composition for shoes outsole and method for thereof |
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| KR1020150042147A KR101662007B1 (en) | 2015-03-26 | 2015-03-26 | An abrasion resistive rubber composition for shoes outsole and method for thereof |
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| KR101662007B1 true KR101662007B1 (en) | 2016-10-04 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101884425B1 (en) | 2017-07-25 | 2018-08-06 | 한국생산기술연구원 | Dispensing agent and Rubber Composition Comprising the Same |
| KR102092723B1 (en) * | 2018-11-15 | 2020-03-24 | 한국신발피혁연구원 | rubber composition for shoes outsole having abrasion resistance and anti slip function |
| CN114641391A (en) * | 2019-11-05 | 2022-06-17 | 大金工业株式会社 | Laminate and extrusion molded article |
| KR20220087161A (en) | 2020-12-17 | 2022-06-24 | 동보체인공업주식회사 | Highly insulating vulcanized rubber composition, footwear article thereof and manufacturing mehtod thereof |
| CN114752085A (en) * | 2022-04-25 | 2022-07-15 | 天台县合润橡胶厂 | Wear-resistant heat-dissipation rubber master batch and preparation method thereof |
| CN115304837A (en) * | 2021-08-09 | 2022-11-08 | 温州市优联新材料有限公司 | Antiskid sole material and preparation method thereof |
| KR20230037811A (en) | 2021-09-10 | 2023-03-17 | 주식회사 넥센 | A rubber composition for shoe outsole with excellent abrasion resistance and slip resistance |
| KR20230169690A (en) | 2022-06-09 | 2023-12-18 | 한국소재융합연구원 | High-insulation rubber composition containing hydration reagent |
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| KR101156575B1 (en) * | 2011-09-16 | 2012-06-20 | 한국신발피혁연구소 | Composition for outsole and outsole manufactured by using the same |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101884425B1 (en) | 2017-07-25 | 2018-08-06 | 한국생산기술연구원 | Dispensing agent and Rubber Composition Comprising the Same |
| KR102092723B1 (en) * | 2018-11-15 | 2020-03-24 | 한국신발피혁연구원 | rubber composition for shoes outsole having abrasion resistance and anti slip function |
| CN114641391A (en) * | 2019-11-05 | 2022-06-17 | 大金工业株式会社 | Laminate and extrusion molded article |
| KR20220087161A (en) | 2020-12-17 | 2022-06-24 | 동보체인공업주식회사 | Highly insulating vulcanized rubber composition, footwear article thereof and manufacturing mehtod thereof |
| CN115304837A (en) * | 2021-08-09 | 2022-11-08 | 温州市优联新材料有限公司 | Antiskid sole material and preparation method thereof |
| CN115304837B (en) * | 2021-08-09 | 2024-03-26 | 温州市优联新材料有限公司 | Anti-skid sole material and preparation method thereof |
| KR20230037811A (en) | 2021-09-10 | 2023-03-17 | 주식회사 넥센 | A rubber composition for shoe outsole with excellent abrasion resistance and slip resistance |
| CN114752085A (en) * | 2022-04-25 | 2022-07-15 | 天台县合润橡胶厂 | Wear-resistant heat-dissipation rubber master batch and preparation method thereof |
| KR20230169690A (en) | 2022-06-09 | 2023-12-18 | 한국소재융합연구원 | High-insulation rubber composition containing hydration reagent |
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