CN108299708B - Ultra-light and ultra-wear-resistant rubber and preparation method thereof - Google Patents
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
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- C08J2421/00—Characterised by the use of unspecified rubbers
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2453/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract
The invention discloses an ultra-light and ultra-wear-resistant rubber which comprises, by mass, 30-45 parts of a polyolefin elastomer, 20-40 parts of polybutadiene rubber, 12-20 parts of an olefin block copolymer, 10-20 parts of polyisoprene rubber, 3-5 parts of a filler, 1-2 parts of zinc oxide, 0.6-1 part of stearic acid, 4-7 parts of a wear-resistant agent, 0.4-0.8 part of a crosslinking assistant, 0.1-1 part of a crosslinking agent and 0.5-1 part of a foaming agent. The invention also provides a preparation method of the ultralight and ultrawear-resistant rubber. The ultralight and ultrawear-resistant rubber manufactured by the technical scheme of the invention has multiple properties of light weight, wear resistance, good rebound resilience, slip resistance and the like, and the production process of the preparation method is simple and is suitable for wide application.
Description
Technical Field
The invention relates to the field of materials, in particular to ultralight and ultrawear-resistant rubber and a preparation method thereof.
Background
Sports shoes, due to their special use, require sole rubbers that are lightweight and wear resistant. At present, the sole is usually made of rubber, although the sole can achieve light specific gravity, the sole is poor in wear resistance, poor in elasticity, poor in soft feeling and unsatisfactory in anti-slip effect, a drying oven is required for shaping in the production process, the size of a finished product is difficult to control, and meanwhile, the production of various structures and multiple colors of rubber in-mold foaming is difficult to achieve. Therefore, the existing ultralight and ultrawear-resistant rubber and the preparation method thereof still need to be further improved.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides an ultra-light and ultra-wear-resistant rubber and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the ultralight and ultrawear-resistant rubber comprises, by mass, 30-45 parts of a polyolefin elastomer, 20-40 parts of polybutadiene rubber, 12-20 parts of an olefin block copolymer, 10-20 parts of polyisoprene rubber, 3-5 parts of a filler, 1-2 parts of zinc oxide, 0.6-1 part of stearic acid, 4-7 parts of a wear-resistant agent, 0.4-0.8 part of a crosslinking assistant, 0.1-1 part of a crosslinking agent and 0.5-1 part of a foaming agent.
Further, the polyolefin elastomer is one or more of LC170, LC175, LC565 and LC 670.
Further, the polybutadiene rubber is of the model number VCR412 and/or VCR 617.
Further, the olefin block copolymer is OBC 9107.
Furthermore, the polyisoprene rubber is one or more of SKI-3S, IR-2200 and SVR 3L.
Furthermore, the content of zinc oxide in the zinc oxide is greater than or equal to 95%, and the specific surface area of the zinc oxide is greater than or equal to 45.
Further, the type of the foaming agent is one or more of F-78K, F-105 and F-48 in-mold foaming agents.
The invention also provides a preparation method of the ultralight and ultrawear-resistant rubber, which comprises the following steps: 1) weighing the following components in parts by mass: 20-40 parts of polybutadiene rubber and 10-20 parts of polyisoprene rubber; 2) blending all the components weighed in the step 1), and then mixing, refining and thinning for two times, wherein the thickness of the film is 1-2 mm; 3) uniformly mixing the mixture obtained in the step 2), and rolling into a cylinder shape; 4) weighing the following components in parts by mass: 30-45 parts of polyolefin elastomer, 20-40 parts of olefin block copolymer, 3-5 parts of filler, 1-2 parts of zinc oxide, 0.6-1 part of stearic acid, 4-7 parts of wear-resistant agent and 0.4-0.8 part of crosslinking assistant; 5) mixing all the components weighed in the step 4) and the mixture obtained in the step 3); 6) weighing the following components in parts by mass: 0.1-1 part of cross-linking agent and 0.5-1 part of foaming agent; 7) adding all the components weighed in the step 6) into the mixed material obtained in the step 5) for mixing; 8) granulating the mixture obtained in the step 7) to obtain the composite rubber.
Further, the mixing time in the step 2) is 10-15 minutes, and the temperature is 60-70 ℃.
Further, the mixing time in the step 7) is 8-10 minutes, and the temperature is 115-120 DEG C
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
the ideal raw material function combination can be obtained by adopting the formula of the ultralight ultrawear-resistant rubber for the sports shoe sole, the formula is prepared by mixing the polyolefin elastomer, the olefin block copolymer and the polyisoprene rubber to obtain a polymer mixture with two separated phases of the rubber and the olefin block copolymer, the rubber and the olefin block copolymer respectively form a dispersed phase state and a continuous phase state, the polybutadiene rubber is added for grafting to overcome the problem of poor compatibility of the rubber and the olefin block copolymer, the dispersity of the mixture is improved, and the specific gravity of the mixture is lower than that of the common rubber after blending modification Good anti-slip effect, good soft feeling, small specific gravity and the like.
Specifically, the polyolefin thermoplastic elastomer is a polymer mixture which is composed of rubber and polyolefin resin and is separated from each other in two phases, the density is small, the weight is light, the elasticity is excellent, and the tear strength performance is good.
Specifically, the polybutadiene rubber VCR412 and VCR617 have excellent wear resistance, light specific gravity, wet skid resistance, low heat generation and better heat and oxygen aging resistance, and after the VCR412 and/or the VCR617 are/is added into the formula of the composite material, the prepared composite material has the characteristics of high wear resistance, low specific gravity, high elasticity, good slip resistance, good soft feeling and the like. And general polybutadiene rubber is easy to generate bubbles, the VCR412 and the VCR617 have no such defect.
Specifically, the olefin block copolymer has more excellent rebound resilience, good fatigue resistance, excellent weather resistance and lighter weight compared with an ethylene-vinyl acetate copolymer, and can adjust the comprehensive physical properties of the composite material, such as hardness, specific gravity, ageing resistance, soft feeling and the like after being added into the formula of the composite material.
Specifically, the polyisoprene rubber has excellent rebound resilience, excellent resilience, better soft feeling, excellent tensile strength and tear strength, and can improve the tensile strength, tear resistance and bending resistance of the composite material and improve the comprehensive physical properties of the material after being added into the formula of the composite material.
Specifically, the cross-linking agent is an odorless cross-linking agent, so that the peculiar smell of the sole and the generation of harmful substances are reduced.
Specifically, the in-mold foaming agent has high precision, uniform particle size distribution, elasticity of a finished product and high resilience to mechanical distortion; and the solvent resistance is good, and no harmful gas is generated.
The rubber sole of the sports shoe manufactured by the technical scheme has the advantages of wear resistance, light weight, high elasticity, slip resistance, soft feeling and comfortableness which cannot be achieved by a common rubber formula, the physical consumption of athletes is greatly reduced, and the physical properties can be kept for a long time.
The invention also provides a preparation method of the ultralight and ultrawear-resistant rubber, the production process of the composite material is simple, the time is short, the operation condition is suitable, the obtained rubber has the superior performances of extremely light weight, wear resistance, high elasticity, good slip resistance, good flexibility, good comfort and the like, after the obtained rubber is cooled, the obtained rubber is molded by a rubber vulcanizing machine according to the corresponding weight, and the finished product of the sole can be obtained, so that the composite material is suitable for wide application.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and more obvious, the present invention is further described in detail below with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
The invention provides an ultra-light and ultra-wear-resistant rubber which comprises, by mass, 45 parts of a polyolefin elastomer, 20 parts of polybutadiene rubber, 20 parts of an olefin block copolymer, 20 parts of polyisoprene rubber, 5 parts of a filler, 1.5 parts of zinc oxide, 0.88 part of stearic acid, 4.5 parts of a wear-resistant agent, 0.5 part of a crosslinking assistant, 1 part of a crosslinking agent and 1 part of a foaming agent.
Wherein the polyolefin elastomer is LC 170; polybutadiene rubber model VCR 412; olefin block copolymer type OBC 9107; the polyisoprene rubber is SVR 3L; the zinc oxide is nano active zinc oxide, wherein the content of the zinc oxide is more than or equal to 95 percent, and the specific surface area of the zinc oxide is more than or equal to 45 percent; the cross-linking agent is odorless DCP; the foaming agent is F-105 in-mold foaming agent.
The invention also provides a preparation method of the ultralight and ultrawear-resistant rubber, which comprises the following steps:
1) weighing the following components in parts by mass: 20 parts of polybutadiene rubber and 20 parts of polyisoprene rubber;
2) putting all the components weighed in the step 1) into an internal mixer for blending, then putting the mixture into a turbine for mixing and plastic-thinning twice, wherein the thickness of a film is 1-2mm, the time of mixing and plastic-molding is 10-15 minutes, and the temperature is 60-70 ℃;
3) uniformly mixing the mixture obtained in the step 2), and rolling into a cylinder shape;
4) weighing the following components in parts by mass: 45 parts of polyolefin elastomer, 20 parts of olefin block copolymer, 5 parts of filler, 1.5 parts of zinc oxide, 0.88 part of stearic acid, 4.5 parts of wear-resisting agent and 0.5 part of crosslinking assistant;
5) putting all the components weighed in the step 4) and the mixture obtained in the step 3) into a turbine for mixing;
6) weighing the following components in parts by mass: 1 part of crosslinking agent and 1 part of foaming agent;
7) adding all the components weighed in the step 6) into the mixed material obtained in the step 5) for mixing, wherein the mixing time is 8-10 minutes, and the temperature is 115-120 ℃;
8) and (3) putting the mixture obtained in the step 7) into a single-screw extruder for granulation to obtain the composite rubber.
Example two
The ultralight and ultrawear-resistant rubber comprises, by mass, 40 parts of a polyolefin elastomer, 35 parts of polybutadiene rubber, 12 parts of an olefin block copolymer, 10 parts of polyisoprene rubber, 3 parts of a filler, 2 parts of zinc oxide, 1 part of stearic acid, 7 parts of a wear-resistant agent, 0.5 part of a crosslinking assistant, 0.3 part of a crosslinking agent and 0.5 part of a foaming agent.
Wherein the polyolefin elastomer is LC 175; polybutadiene rubber type VCR 617; olefin block copolymer type OBC 9107; the polyisoprene rubber is SKI-3S; the zinc oxide is nano active zinc oxide, wherein the content of the zinc oxide is more than or equal to 95 percent, and the specific surface area of the zinc oxide is more than or equal to 45 percent; the cross-linking agent is odorless DCP; the foaming agent is F-78K in-mold foaming agent.
The preparation method of the ultralight and ultrawear-resistant rubber is basically the same as that of the first embodiment except that the weight parts of the components are different.
EXAMPLE III
The ultralight and ultrawear-resistant rubber comprises, by mass, 30 parts of a polyolefin elastomer, 40 parts of polybutadiene rubber, 15 parts of an olefin block copolymer, 15 parts of polyisoprene rubber, 3 parts of a filler, 2 parts of zinc oxide, 1 part of stearic acid, 7 parts of a wear-resistant agent, 0.5 part of a crosslinking assistant, 0.3 part of a crosslinking agent and 0.8 part of a foaming agent.
Wherein the polyolefin elastomer is LC 565; polybutadiene rubber type VCR 617; olefin block copolymer type OBC 9107; the polyisoprene rubber is IR-2200; the zinc oxide is nano active zinc oxide, wherein the content of the zinc oxide is more than or equal to 95 percent, and the specific surface area of the zinc oxide is more than or equal to 45 percent; the cross-linking agent is odorless DCP; the foaming agent is F-48 in-mold foaming agent.
The preparation method of the ultralight and ultrawear-resistant rubber is basically the same as that of the first embodiment except that the weight parts of the components are different.
After three examples are prepared, the three examples are also tested according to the national standard, and the test results are shown in the following table one.
Table one: results of Performance testing of examples
Data is obtained according to the national standard test method.
As can be seen from the data in the table, the rubber prepared by the invention can obtain very ideal density, wear resistance, high elasticity and slip resistance, improves the problems of heavy mass, poor wear resistance, poor rebound resilience, poor soft feeling and the like of the existing rubber products, and meets the national relevant physical performance standard, because the ideal raw material function combination can be obtained after the formula of the ultralight ultrawear-resistant rubber for the sports shoe sole is adopted, the formula adopts the polyolefin elastomer, the olefin block copolymer and the polyisoprene rubber for mixing to obtain a polymer mixture with two separated phases of the rubber and the olefin block copolymer, the rubber and the olefin block copolymer respectively form a dispersed phase state and a continuous phase state, the problem of poor compatibility of the rubber and the olefin block copolymer can be overcome by adding the polybutadiene rubber for grafting, the dispersibility of the mixture is improved, and the rubber can also provide lower specific gravity compared with the common rubber after blending modification, therefore, the composite material has the characteristics of high elasticity, better tear resistance and slip resistance of rubber, small density, light weight and the like of the olefin block copolymer, ensures good physical properties of the composite material, and has the physical properties of super wear resistance, high elasticity, good slip resistance effect, good soft feeling, small specific gravity and the like.
Specifically, the polyolefin thermoplastic elastomer is a polymer mixture which is composed of rubber and polyolefin resin and is separated from each other in two phases, the density is small, the weight is light, the elasticity is excellent, and the tear strength performance is good.
Specifically, the polybutadiene rubber VCR412 and VCR617 have excellent wear resistance, light specific gravity, wet skid resistance, low heat generation and better heat and oxygen aging resistance, and after the VCR412 and/or the VCR617 are/is added into the formula of the composite material, the prepared composite material has the characteristics of high wear resistance, low specific gravity, high elasticity, good slip resistance, good soft feeling and the like. And general polybutadiene rubber is easy to generate bubbles, the VCR412 and the VCR617 have no such defect.
Specifically, the olefin block copolymer has more excellent rebound resilience, good fatigue resistance, excellent weather resistance and lighter weight compared with an ethylene-vinyl acetate copolymer, and can adjust the comprehensive physical properties of the composite material, such as hardness, specific gravity, ageing resistance, soft feeling and the like after being added into the formula of the composite material.
Specifically, the polyisoprene rubber has excellent rebound resilience, excellent resilience, better soft feeling, excellent tensile strength and tear strength, and can improve the tensile strength, tear resistance and bending resistance of the composite material and improve the comprehensive physical properties of the material after being added into the formula of the composite material.
Specifically, the cross-linking agent is an odorless cross-linking agent, so that the peculiar smell of the sole and the generation of harmful substances are reduced.
Specifically, the in-mold foaming agent has high precision, uniform particle size distribution, elasticity of a finished product and high resilience to mechanical distortion; and the solvent resistance is good, and no harmful gas is generated.
The rubber sole of the sports shoe manufactured by the technical scheme has the advantages of wear resistance, light weight, high elasticity, slip resistance, soft feeling and comfortableness which cannot be achieved by a common rubber formula, the physical consumption of athletes is greatly reduced, and the physical properties can be kept for a long time.
The invention also provides a preparation method of the ultralight and ultrawear-resistant rubber, the production process of the composite material is simple, the time is short, the operation condition is suitable, the obtained rubber has the superior performances of extremely light weight, wear resistance, high elasticity, good slip resistance, good flexibility, good comfort and the like, after the obtained rubber is cooled, the obtained rubber is molded by a rubber vulcanizing machine according to the corresponding weight, and the finished product of the sole can be obtained, so that the composite material is suitable for wide application.
The above description describes preferred embodiments of the invention, but it should be understood that the invention is not limited to the above embodiments, and should not be viewed as excluding other embodiments. Modifications made by those skilled in the art in light of the teachings of this disclosure, which are well known or are within the skill and knowledge of the art, are also to be considered as within the scope of this invention.
Claims (8)
1. An ultralight and ultrawear-resistant rubber is characterized in that: the adhesive comprises the following components in parts by mass: 30-45 parts of polyolefin elastomer, 20-40 parts of polybutadiene rubber, 12-20 parts of olefin block copolymer, 10-20 parts of polyisoprene rubber, 3-5 parts of filler, 1-2 parts of zinc oxide, 0.6-1 part of stearic acid, 4-7 parts of wear-resisting agent, 0.4-0.8 part of crosslinking assistant, 0.1-1 part of crosslinking agent and 0.5-1 part of foaming agent; the polybutadiene rubber is of a VCR412 and/or a VCR617 type; the type of the olefin block copolymer is OBC 9107.
2. The ultra-light and ultra-wear-resistant rubber as claimed in claim 1, wherein: the polyolefin elastomer is one or more of LC170, LC175, LC565 and LC 670.
3. The ultra-light and ultra-wear-resistant rubber as claimed in claim 1, wherein: the polyisoprene rubber is one or more of SKI-3S, IR-2200 and SVR 3L.
4. The ultra-light and ultra-wear-resistant rubber as claimed in claim 1, wherein: the content of zinc oxide in the zinc oxide is more than or equal to 95 percent, and the specific surface area of the zinc oxide is more than or equal to 45 percent.
5. The ultra-light and ultra-wear-resistant rubber as claimed in claim 1, wherein: the type of the foaming agent is one or more of F-78K, F-105 and F-48 in-mold foaming agents.
6. A method for preparing the ultra-light and ultra-wear-resistant rubber as defined in any one of claims 1 to 5, wherein: the method comprises the following steps:
1) weighing the following components in parts by mass: 20-40 parts of polybutadiene rubber and 10-20 parts of polyisoprene rubber, wherein the polybutadiene rubber is VCR412 and/or VCR 617;
2) blending all the components weighed in the step 1), and then mixing, refining and thinning for two times, wherein the thickness of the film is 1-2 mm;
3) uniformly mixing the mixture obtained in the step 2), and rolling into a cylinder shape;
4) weighing the following components in parts by mass: 30-45 parts of polyolefin elastomer, 12-20 parts of olefin block copolymer, 3-5 parts of filler, 1-2 parts of zinc oxide, 0.6-1 part of stearic acid, 4-7 parts of wear-resistant agent and 0.4-0.8 part of crosslinking assistant; the type of the olefin block copolymer is OBC 9107;
5) mixing all the components weighed in the step 4) and the mixture obtained in the step 3);
6) weighing the following components in parts by mass: 0.1-1 part of cross-linking agent and 0.5-1 part of foaming agent;
7) adding all the components weighed in the step 6) into the mixed material obtained in the step 5) for mixing;
8) granulating the mixture obtained in the step 7) to obtain the composite rubber.
7. The method for preparing the ultra-light and ultra-wear-resistant rubber as claimed in claim 6, wherein the method comprises the following steps: the mixing time in the step 2) is 10-15 minutes, and the temperature is 60-70 ℃.
8. The method for preparing the ultra-light and ultra-wear-resistant rubber as claimed in claim 6, wherein the method comprises the following steps: the mixing time in the step 7) is 8-10 minutes, and the temperature is 115-120 ℃.
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| CN111303541B (en) * | 2018-12-12 | 2022-09-13 | 上海帼帆化工新材料有限公司 | Wear-resistant rubber particle capable of being formed by injection molding and preparation method and application thereof |
| CN111808357B (en) * | 2020-07-28 | 2023-06-23 | 安踏（中国）有限公司 | Extremely-light wear-resistant low-compression high-resilience composite foam material for sports shoe soles and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB821846A (en) * | 1956-03-16 | 1959-10-14 | Ici Ltd | Vulcanisable rubber compositions |
| JPH0517624A (en) * | 1991-07-08 | 1993-01-26 | Asahi Corp | Rubber composition for shoe sole |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102167863B (en) * | 2011-01-17 | 2013-01-23 | 中国皮革和制鞋工业研究院 | Insole material of lightweight high-elasticity sports shoes and manufacturing method thereof |
| CN104804228A (en) * | 2015-02-28 | 2015-07-29 | 广东志达行新材料有限公司 | Synthesized light rubber material for sole and preparation method of synthesized light rubber material |
| CN107400268A (en) * | 2017-09-30 | 2017-11-28 | 利郎(中国)有限公司 | A kind of lightweight, the assembled shoe bottom and preparation method thereof of damping |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB821846A (en) * | 1956-03-16 | 1959-10-14 | Ici Ltd | Vulcanisable rubber compositions |
| JPH0517624A (en) * | 1991-07-08 | 1993-01-26 | Asahi Corp | Rubber composition for shoe sole |
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