CN111234327B - Graphene natural rubber polymer composite foam material for soles of old people and preparation method thereof - Google Patents
Graphene natural rubber polymer composite foam material for soles of old people and preparation method thereof Download PDFInfo
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
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- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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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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- C08J9/0071—Nanosized fillers, i.e. having at least one dimension below 100 nanometers
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- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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- C08J2307/00—Characterised by the use of natural rubber
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- C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08J2423/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
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- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
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Abstract
The invention discloses a graphene natural rubber polymer old man sole composite foaming material and a preparation method thereof, wherein the graphene natural rubber polymer old man sole composite foaming material comprises the following raw materials in parts by weight: 55-65 parts of natural rubber, 21-28 parts of butyl rubber, 8-12 parts of butadiene rubber, 4-6 parts of nano medium, 4-5 parts of phenylene oxide silicon glycol, 2.5-3.5 parts of hydroxyl-terminated polydimethylsiloxane, 2-2.5 parts of graphene, 1.5-2 parts of zinc oxide, 2.5-3 parts of stearic acid, 2-2.4 parts of zinc stearate, 2-2.5 parts of a cross-linking agent, 1.8-2.2 parts of a foaming agent and 4-5 parts of a lubricating agent. According to the invention, through selecting raw material compositions and optimizing the content of each raw material, the prepared graphene natural rubber polymer old man sole composite foam material has a good slip prevention effect; the tensile strength is high, the mechanical property is good, and the durability is good; the density is low, and the light weight is achieved; is particularly suitable for being used as the sole material for the old.
Description
Technical Field
The invention relates to the technical field of polymer composite foam materials, in particular to a graphene natural rubber polymer old man sole composite foam material and a preparation method thereof.
Background
At present, various soles are mostly made of EVA or rubber materials, the cost is controllable, and the performances such as elasticity, hardness and the like can be adjusted according to the requirements, so that the requirements of people are basically met.
Natural rubber is a variety with the best coordination between physical and mechanical properties and processing properties in rubber materials, and is widely applied to the fields of daily life, medical treatment and health, transportation, agriculture, scientific experiments, national defense and the like. With the development of society, people put higher demands on the performance of products, such as: the traditional rubber foaming sole has heavy weight, the wear resistance can not meet the requirement, the heat shrinkage resistance is poor, and the rubber foaming sole is often required to be modified.
The graphene has excellent optical, electrical and mechanical properties, has important application prospects in the aspects of materials science, micro-nano processing, energy, biomedicine, drug delivery and the like, and is considered to be a revolutionary material in the future.
However, the currently used foam materials for shoe soles have the following problems:
1. the anti-skid effect is not good, and the shoe sole material is used as a sole material for the old, so that the old can slip and fall easily;
2. after foaming, the tensile strength is greatly reduced, the mechanical property is poor, and the comprehensive use performance is poor; or low degree of foaming, and does not have good portability.
Disclosure of Invention
Based on the situation, the invention aims to provide the graphene natural rubber polymer composite foaming material for the soles of the old people and the preparation method thereof, and the problems can be effectively solved.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a graphene natural rubber polymer old man sole composite foaming material comprises the following raw materials in parts by weight:
55-65 parts of natural rubber, 21-28 parts of butyl rubber, 8-12 parts of butadiene rubber, 4-6 parts of nano medium, 4-5 parts of phenylene oxide silicon glycol, 2.5-3.5 parts of hydroxyl-terminated polydimethylsiloxane, 2-2.5 parts of graphene, 1.5-2 parts of zinc oxide, 2.5-3 parts of stearic acid, 2-2.4 parts of zinc stearate, 2-2.5 parts of a cross-linking agent, 1.8-2.2 parts of a foaming agent and 4-5 parts of a lubricating agent.
Preferably, the graphene natural rubber polymer old man sole composite foam material comprises the following raw materials in parts by weight:
60 parts of natural rubber, 24.5 parts of butyl rubber, 10 parts of butadiene rubber, 5 parts of nano medium, 4.5 parts of phenylene oxide silicon glycol, 3 parts of hydroxyl-terminated polydimethylsiloxane, 2.25 parts of graphene, 1.75 parts of zinc oxide, 2.8 parts of stearic acid, 2.2 parts of zinc stearate, 2.25 parts of cross-linking agent, 2 parts of foaming agent and 4.8 parts of lubricating agent.
Preferably, the lubricant is a mixture of maleic anhydride grafted polyethylene and ethylene bis stearamide.
Preferably, the mass ratio of the maleic anhydride grafted polyethylene to the ethylene bis stearamide in the mixture of the maleic anhydride grafted polyethylene and the ethylene bis stearamide is 1: (0.17-0.22).
Preferably, the crosslinking agent is a mixture of a rubber crosslinking agent VP-4L and isocyanate Desmodur BL3175A of Bayer company in Germany, and the mass ratio of the two is 1: (0.14-0.18).
Preferably, the nano medium is nano calcium carbonate.
Preferably, the blowing agent is an AC blowing agent.
The invention also provides a preparation method of the graphene natural rubber polymer old man sole composite foam material, which comprises the following steps:
1) weighing the raw materials of the graphene natural rubber polymer old man sole composite foaming material according to parts by weight;
2) delivering the natural rubber into an internal mixer, masticating for 10-15 min at the temperature of 120-125 ℃, discharging, and storing the masticated natural rubber at room temperature for more than 48h for later use;
3) pouring the raw material components except the cross-linking agent and the foaming agent into an internal mixer for mixing, and performing first stirring when the temperature reaches 100-105 ℃; performing secondary material turning when the temperature reaches 110-115 ℃, and continuously mixing for 7-10 min;
4) continuously heating, adding the cross-linking agent into the internal mixer for continuous mixing when the temperature reaches 120-125 ℃ for the third material turning, wherein the mixing time is 4-6 min;
5) adding a foaming agent into an internal mixer, and fully and uniformly mixing for 7-9 min to obtain a mixture;
6) and then carrying out mould pressing foaming or injection foaming on the mixture to obtain the graphene natural rubber polymer old man sole composite foaming material.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the graphene natural rubber polymer old man sole composite foaming material disclosed by the invention is prepared by selecting raw materials and optimizing the content of each raw material, so that the prepared graphene natural rubber polymer old man sole composite foaming material is high in slip resistance coefficient (dry slip resistance and wet slip resistance) and good in slip resistance effect; the tensile strength is high, the mechanical property is good, and the durability is good; the density is low, and the light weight is achieved; the sole material is particularly suitable for being used as sole materials for the old, has good portability and durability, has good anti-slip effect, and can effectively reduce the injury of the old caused by slipping.
The raw materials of the graphene natural rubber polymer old man sole composite foaming material are added with natural rubber, butyl rubber and butadiene rubber in proper proportion as base materials, so that good mechanical properties and the like are ensured.
The graphene natural rubber polymer old man sole composite foaming material is prepared by adding a proper proportion of phenylene oxide silicon glycol and hydroxyl-terminated polydimethylsiloxane into raw materials, adding a proper amount of isocyanate Desmodur BL3175A (which is not reacted at room temperature and reacts at high temperature) of Germany Bayer company into a cross-linking agent, and reacting the three components to generate a cross-linked three-dimensional network structure, wherein the cross-linked three-dimensional network structure is cross-linked with base materials of natural rubber, butyl rubber and butadiene rubber, and the cross-linking is moderate, the cross-linked areas are uniformly distributed and matched with other components to play a good synergistic effect, so that the anti-slip effect of the graphene natural rubber polymer old man sole composite foaming material is remarkably improved, and the mechanical properties such as tear strength and tensile strength are improved.
The graphene natural rubber polymer old man sole composite foaming material disclosed by the invention is added with graphene in a proper proportion, the graphene is uniformly dispersed in a raw material system of the graphene natural rubber polymer old man sole composite foaming material, the graphene is regular in shape and compact in structure and stably exists in a rubber base material in a laminated, stable and uniformly distributed special structure mode, the graphene is uniformly dispersed in the raw material system of the graphene natural rubber polymer old man sole composite foaming material disclosed by the invention and is good in compatibility with other components, and the graphene natural rubber polymer old man sole composite foaming material is matched with other components to play a good synergistic effect and can be uniformly dispersed in a matrix, so that the tensile strength of the graphene natural rubber polymer old man sole composite foaming material disclosed by the invention is greatly improved, and good mechanical properties are ensured; meanwhile, the wear resistance of the graphene natural rubber polymer old man sole composite foam material is improved.
The raw materials of the graphene natural rubber polymer old man sole composite foaming material are added with a lubricant in a proper proportion, and the mixture of maleic anhydride grafted polyethylene and ethylene bis stearamide is preferable. The graphene natural rubber polymer old man sole composite foam material has the advantages that the polarity matching of the lubricant is more reasonable, the lubricant has multiple polarities, the graphene natural rubber polymer old man sole composite foam material has a better dispersion effect on components such as graphene, the processing flowability of the graphene natural rubber polymer old man sole composite foam material is improved, the processing is convenient, all parts of the graphene natural rubber polymer old man sole composite foam material are more uniform, the uniform distribution of foam holes is ensured, the uniform distribution of cross-linking areas is ensured, and the graphene natural rubber polymer old man sole composite foam material has good mechanical properties and ultralightness.
The graphene natural rubber polymer old man sole composite foaming material is mainly used as a sole material, and the application field of the graphene natural rubber polymer old man sole composite foaming material is not limited to the field of shoe materials and can also be used in other fields.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in connection with specific examples, which should not be construed as limiting the present patent.
The test methods or test methods described in the following examples are conventional methods unless otherwise specified; the reagents and materials, unless otherwise indicated, are conventionally obtained commercially or prepared by conventional methods.
Example 1:
a graphene natural rubber polymer old man sole composite foaming material comprises the following raw materials in parts by weight:
55-65 parts of natural rubber, 21-28 parts of butyl rubber, 8-12 parts of butadiene rubber, 4-6 parts of nano medium, 4-5 parts of phenylene oxide silicon glycol, 2.5-3.5 parts of hydroxyl-terminated polydimethylsiloxane, 2-2.5 parts of graphene, 1.5-2 parts of zinc oxide, 2.5-3 parts of stearic acid, 2-2.4 parts of zinc stearate, 2-2.5 parts of a cross-linking agent, 1.8-2.2 parts of a foaming agent and 4-5 parts of a lubricating agent.
In this embodiment, the graphene natural rubber polymer composite foam material for soles of old people comprises the following raw materials in parts by weight:
60 parts of natural rubber, 24.5 parts of butyl rubber, 10 parts of butadiene rubber, 5 parts of nano medium, 4.5 parts of phenylene oxide silicon glycol, 3 parts of hydroxyl-terminated polydimethylsiloxane, 2.25 parts of graphene, 1.75 parts of zinc oxide, 2.8 parts of stearic acid, 2.2 parts of zinc stearate, 2.25 parts of cross-linking agent, 2 parts of foaming agent and 4.8 parts of lubricating agent.
In this example, the lubricant was a mixture of maleic anhydride grafted polyethylene and ethylene bis stearamide.
In this embodiment, the mass ratio of the maleic anhydride grafted polyethylene to the ethylene bis stearamide in the mixture of the maleic anhydride grafted polyethylene and the ethylene bis stearamide is 1: (0.17-0.22).
In the embodiment, the crosslinking agent is a mixture of a rubber crosslinking agent VP-4L and isocyanate Desmodur BL3175A of Bayer company in Germany, and the mass ratio of the two is 1: (0.14-0.18).
In this embodiment, the nano medium is nano calcium carbonate.
In this example, the blowing agent was an AC blowing agent.
The embodiment also provides a preparation method of the graphene natural rubber polymer old man sole composite foam material, which comprises the following steps:
1) weighing the raw materials of the graphene natural rubber polymer old man sole composite foaming material according to parts by weight;
2) delivering the natural rubber into an internal mixer, masticating for 10-15 min at the temperature of 120-125 ℃, discharging, and storing the masticated natural rubber at room temperature for more than 48h for later use;
3) pouring the raw material components except the cross-linking agent and the foaming agent into an internal mixer for mixing, and performing first stirring when the temperature reaches 100-105 ℃; performing secondary material turning when the temperature reaches 110-115 ℃, and continuously mixing for 7-10 min;
4) continuously heating, adding the cross-linking agent into the internal mixer for continuous mixing when the temperature reaches 120-125 ℃ for the third material turning, wherein the mixing time is 4-6 min;
5) adding a foaming agent into an internal mixer, and fully and uniformly mixing for 7-9 min to obtain a mixture;
6) and then carrying out mould pressing foaming or injection foaming on the mixture to obtain the graphene natural rubber polymer old man sole composite foaming material.
Example 2:
a graphene natural rubber polymer old man sole composite foaming material comprises the following raw materials in parts by weight:
55 parts of natural rubber, 21 parts of butyl rubber, 8 parts of butadiene rubber, 4 parts of nano medium, 4 parts of phenylate phenylene silicon glycol, 2.5 parts of hydroxyl-terminated polydimethylsiloxane, 2 parts of graphene, 1.5 parts of zinc oxide, 2.5 parts of stearic acid, 2 parts of zinc stearate, 2 parts of cross-linking agent, 1.8 parts of foaming agent and 4 parts of lubricating agent.
In this example, the lubricant was a mixture of maleic anhydride grafted polyethylene and ethylene bis stearamide.
In this embodiment, the mass ratio of the maleic anhydride grafted polyethylene to the ethylene bis stearamide in the mixture of the maleic anhydride grafted polyethylene and the ethylene bis stearamide is 1: 0.17.
in the embodiment, the crosslinking agent is a mixture of a rubber crosslinking agent VP-4L and isocyanate Desmodur BL3175A of Bayer company in Germany, and the mass ratio of the two is 1: 0.14.
in this embodiment, the nano medium is nano calcium carbonate.
In this example, the blowing agent was an AC blowing agent.
In this embodiment, the preparation method of the graphene natural rubber polymer composite foam material for soles of elderly people comprises the following steps:
1) weighing the raw materials of the graphene natural rubber polymer old man sole composite foaming material according to parts by weight;
2) delivering the natural rubber into an internal mixer, masticating for 15min at the temperature of 120 ℃, discharging, and storing the masticated natural rubber at room temperature for more than 48h for later use;
3) pouring the raw material components except the cross-linking agent and the foaming agent into an internal mixer for mixing, and performing first stirring when the temperature reaches 100 ℃; performing second stirring when the temperature reaches 110 ℃, and continuously mixing for 10 min;
4) continuing to heat, adding the cross-linking agent into the internal mixer for continuous mixing when the temperature reaches 120 ℃ and carrying out third-time material turning, wherein the mixing time is 6 min;
5) adding a foaming agent into an internal mixer, and fully and uniformly mixing for 9min to obtain a mixture;
6) and then carrying out mould pressing foaming or injection foaming on the mixture to obtain the graphene natural rubber polymer old man sole composite foaming material.
Example 3:
a graphene natural rubber polymer old man sole composite foaming material comprises the following raw materials in parts by weight:
65 parts of natural rubber, 28 parts of butyl rubber, 12 parts of butadiene rubber, 6 parts of nano medium, 5 parts of phenylene oxide silicon glycol, 3.5 parts of hydroxyl-terminated polydimethylsiloxane, 2.5 parts of graphene, 2 parts of zinc oxide, 3 parts of stearic acid, 2.4 parts of zinc stearate, 2.5 parts of cross-linking agent, 2.2 parts of foaming agent and 5 parts of lubricating agent.
In this example, the lubricant was a mixture of maleic anhydride grafted polyethylene and ethylene bis stearamide.
In this embodiment, the mass ratio of the maleic anhydride grafted polyethylene to the ethylene bis stearamide in the mixture of the maleic anhydride grafted polyethylene and the ethylene bis stearamide is 1: 0.22.
in the embodiment, the crosslinking agent is a mixture of a rubber crosslinking agent VP-4L and isocyanate Desmodur BL3175A of Bayer company in Germany, and the mass ratio of the two is 1: 0.18.
in this embodiment, the nano medium is nano calcium carbonate.
In this example, the blowing agent was an AC blowing agent.
In this embodiment, the preparation method of the graphene natural rubber polymer composite foam material for soles of elderly people comprises the following steps:
1) weighing the raw materials of the graphene natural rubber polymer old man sole composite foaming material according to parts by weight;
2) delivering the natural rubber into an internal mixer, masticating for 10min at the temperature of 125 ℃, discharging, and storing the masticated natural rubber at room temperature for more than 48h for later use;
3) pouring the raw material components except the cross-linking agent and the foaming agent into an internal mixer for mixing, and performing first stirring when the temperature reaches 105 ℃; performing second stirring when the temperature reaches 115 ℃, and continuously mixing for 7 min;
4) continuing to heat, adding the cross-linking agent into the internal mixer for continuous mixing when the temperature reaches 125 ℃ and carrying out third material turning for 4 min;
5) adding a foaming agent into an internal mixer, and fully and uniformly mixing for 7min to obtain a mixture;
6) and then carrying out mould pressing foaming or injection foaming on the mixture to obtain the graphene natural rubber polymer old man sole composite foaming material.
Example 4:
a graphene natural rubber polymer old man sole composite foaming material comprises the following raw materials in parts by weight:
60 parts of natural rubber, 24.5 parts of butyl rubber, 10 parts of butadiene rubber, 5 parts of nano medium, 4.5 parts of phenylene oxide silicon glycol, 3 parts of hydroxyl-terminated polydimethylsiloxane, 2.25 parts of graphene, 1.75 parts of zinc oxide, 2.8 parts of stearic acid, 2.2 parts of zinc stearate, 2.25 parts of cross-linking agent, 2 parts of foaming agent and 4.8 parts of lubricating agent.
In this example, the lubricant was a mixture of maleic anhydride grafted polyethylene and ethylene bis stearamide.
In this embodiment, the mass ratio of the maleic anhydride grafted polyethylene to the ethylene bis stearamide in the mixture of the maleic anhydride grafted polyethylene and the ethylene bis stearamide is 1: 0.195.
in the embodiment, the crosslinking agent is a mixture of a rubber crosslinking agent VP-4L and isocyanate Desmodur BL3175A of Bayer company in Germany, and the mass ratio of the two is 1: 0.16.
in this embodiment, the nano medium is nano calcium carbonate.
In this example, the blowing agent was an AC blowing agent.
In this embodiment, the preparation method of the graphene natural rubber polymer composite foam material for soles of elderly people comprises the following steps:
1) weighing the raw materials of the graphene natural rubber polymer old man sole composite foaming material according to parts by weight;
2) delivering the natural rubber into an internal mixer, masticating for 13min at the temperature of 122 ℃, discharging, and storing the masticated natural rubber at room temperature for more than 48h for later use;
3) pouring the raw material components except the cross-linking agent and the foaming agent into an internal mixer for mixing, and performing first stirring when the temperature reaches 103 ℃; performing second stirring when the temperature reaches 112 ℃, and continuously mixing for 9 min;
4) continuing to heat, adding the cross-linking agent into the internal mixer for continuous mixing when the temperature reaches 122 ℃ and carrying out third-time material turning, wherein the mixing time is 5 min;
5) adding a foaming agent into an internal mixer, and fully and uniformly mixing for 8min to obtain a mixture;
6) and then carrying out mould pressing foaming or injection foaming on the mixture to obtain the graphene natural rubber polymer old man sole composite foaming material.
Comparative example 1:
the difference from example 4 is that no butyl rubber is present, and the other is the same as example 4.
Comparative example 2:
the difference from example 4 is that butadiene rubber was not contained, and the other examples are the same as example 4.
Comparative example 3:
the difference from example 4 is that there is no phenylenesilylene glycol, no hydroxy terminated polydimethylsiloxane, and there is no isocyanate Desmodur BL3175A from Bayer, Germany in the crosslinker, the other is the same as example 4.
Comparative example 4:
the difference from example 4 is that graphene is absent, and the others are the same as example 4.
Comparative example 5:
the lubricant is different from the lubricant in example 4 in that ethylene bis stearamide is used, and the rest is the same as example 4.
The graphene natural rubber polymer elder shoe sole composite foam material and the natural rubber foam material obtained in the embodiments 2 to 4 and the comparative examples 1 to 5 of the present invention were subjected to the following performance tests, and the test results are shown in table 1:
TABLE 1
From the above table analysis, it can be seen that: the graphene natural rubber polymer composite foaming material for the soles of the old people is high in slip prevention coefficient (dry slip prevention and wet slip prevention) and good in slip prevention effect; the tensile strength is high, the mechanical property is good, and the durability is good; and has low density and ultra-light weight.
In conclusion, the graphene natural rubber polymer composite foam material for soles of old people is excellent in performance in all aspects, remarkably improved, and capable of greatly meeting market demands, and in addition, under the comparison, the graphene natural rubber polymer composite foam material for soles of old people prepared in the embodiment 4 is optimal in comprehensive performance, and the corresponding formula dosage and the preparation method are optimal schemes.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (6)
1. The graphene natural rubber polymer old man sole composite foam material is characterized by comprising the following raw materials in parts by weight:
55-65 parts of natural rubber, 21-28 parts of butyl rubber, 8-12 parts of butadiene rubber, 4-6 parts of nano medium, 4-5 parts of phenylene oxide silicon glycol, 2.5-3.5 parts of hydroxyl-terminated polydimethylsiloxane, 2-2.5 parts of graphene, 1.5-2 parts of zinc oxide, 2.5-3 parts of stearic acid, 2-2.4 parts of zinc stearate, 2-2.5 parts of a crosslinking agent, 1.8-2.2 parts of a foaming agent and 4-5 parts of a lubricating agent; the lubricant is a mixture of maleic anhydride grafted polyethylene and ethylene bis stearamide, and the mass ratio of the maleic anhydride grafted polyethylene to the ethylene bis stearamide in the mixture of the maleic anhydride grafted polyethylene and the ethylene bis stearamide is 1: (0.17-0.22).
2. The graphene natural rubber polymer old man sole composite foam material according to claim 1, wherein the graphene natural rubber polymer old man sole composite foam material comprises the following raw materials in parts by weight:
60 parts of natural rubber, 24.5 parts of butyl rubber, 10 parts of butadiene rubber, 5 parts of nano medium, 4.5 parts of phenylene oxide silicon glycol, 3 parts of hydroxyl-terminated polydimethylsiloxane, 2.25 parts of graphene, 1.75 parts of zinc oxide, 2.8 parts of stearic acid, 2.2 parts of zinc stearate, 2.25 parts of cross-linking agent, 2 parts of foaming agent and 4.8 parts of lubricating agent.
3. The graphene natural rubber macromolecule geriatric shoe sole composite foam material according to claim 1, wherein the cross-linking agent is a mixture of a rubber cross-linking agent VP-4L and isocyanate Desmodur BL3175A from Bayer, Germany, in a mass ratio of 1: (0.14-0.18).
4. The graphene natural rubber polymer old man sole composite foam material according to claim 1, wherein the nano medium is nano calcium carbonate.
5. The graphene natural rubber polymer geriatric shoe sole composite foam material of claim 1, wherein the foaming agent is an AC foaming agent.
6. The preparation method of the graphene natural rubber polymer old man sole composite foam material according to any one of claims 1 to 5, which is characterized by comprising the following steps:
1) weighing the raw materials of the graphene natural rubber polymer old man sole composite foaming material according to parts by weight;
2) delivering the natural rubber into an internal mixer, masticating for 10-15 min at the temperature of 120-125 ℃, discharging, and storing the masticated natural rubber at room temperature for more than 48h for later use;
3) pouring the raw material components except the cross-linking agent and the foaming agent into an internal mixer for mixing, and performing first stirring when the temperature reaches 100-105 ℃; performing secondary material turning when the temperature reaches 110-115 ℃, and continuously mixing for 7-10 min;
4) continuously heating, adding the cross-linking agent into the internal mixer for continuous mixing when the temperature reaches 120-125 ℃ for the third material turning, wherein the mixing time is 4-6 min;
5) adding a foaming agent into an internal mixer, and fully and uniformly mixing for 7-9 min to obtain a mixture;
6) and then carrying out mould pressing foaming or injection foaming on the mixture to obtain the graphene natural rubber polymer old man sole composite foaming material.
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| CN112876779A (en) * | 2021-01-21 | 2021-06-01 | 福建五持恒科技发展有限公司 | Graphene composite material with high slip resistance and suitable for walking stick |
| CN112898691A (en) * | 2021-01-21 | 2021-06-04 | 福建五持恒科技发展有限公司 | Graphene antibacterial medical sole composite material |
| CN113004606B (en) * | 2021-03-05 | 2023-07-25 | 泉州龙步鞋业有限公司 | Wear-resistant EVA (ethylene-vinyl acetate copolymer) foaming sole and processing technology thereof |
| CN114957813A (en) * | 2022-06-09 | 2022-08-30 | 温州市利步达鞋业有限公司 | Graphene modified labor protection shoe sole and manufacturing method thereof |
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