High-elasticity and high-strength nylon modified material suitable for high-rate foaming and foaming material

Abstract

The invention relates to the technical field of foaming materials, and particularly discloses a high-elasticity and high-strength nylon modified material suitable for high-rate foaming and a foaming material.The nylon modified material comprises main materials and additives, the main materials comprise nylon, TPEE and EVA, the additives comprise a dispersing agent, and the dispersing agent is an organic solvent. The nylon accounts for 30%-40% of the total amount of the main material components, the TPEE accounts for 5%-15% of the total amount of the main material components, the EVA accounts for 50%-60% of the total amount of the main material components, and the dispersing agent is added according to 2%-4% of the total amount of the main material components. The nylon modified material is applied to the components of the foaming material, and the weight parts of the components of the nylon modified material can be 10-20 parts of the total weight parts of the components of the foaming material. The nylon modified material can be suitable for high-rate foaming, even can achieve high-rate foaming of about 200%, and can be applied to foaming material production to obtain a foaming material product with good rebound rate and low specific gravity, and the product has the advantages of high elasticity and high strength.

Description

Technical Field

[0001] The invention relates to the technical field of foaming materials. Background Art

[0002] As people pay more attention to and become more enthusiastic about sports, sneakers, as the most commonly owned sports product, are becoming more and more concerned about the user experience of sneakers. Shoe material manufacturers are increasingly demanding lighter and more elastic materials for sports shoe soles, and their performance requirements are also getting higher and higher.

[0003] There are two technologies in the prior art that can achieve high-multiplier and light and high-elasticity: one is popcorn technology, and the other is physical foaming technology, but both of these technical products have the disadvantages of high cost and high defect rate. At present, the sole materials used more in the market are mainly EVA, POE, EPDM and other materials blended and foamed. Among these materials, POE foaming material has the problem of insufficient elasticity, and EPDM foaming material has the problem of too high specific gravity. At present, the sole materials prepared by these materials that are used more often have the problem of low rebound rate and insufficient strength when the foaming ratio is relatively large (foaming ratio is about 200%). The sports shoes made of this kind of products have poor experience for consumers in sports use or long-term activities. Summary of the invention

[0004] The purpose of the present invention is to provide a high elasticity and high strength nylon modified material suitable for large-ratio foaming, the nylon modified material can be suitable for large-ratio foaming, and can even achieve a large-ratio foaming of about 200%, and can obtain a foam material product with good rebound rate and low specific gravity. Another purpose of the present invention is to provide a foam material containing the above-mentioned high elasticity and high strength nylon modified material suitable for large-ratio foaming, the foam material has the advantages of high elasticity and high strength.

[0005] To achieve the above purpose, the technical solution of the present invention is: a high-elasticity and high-strength nylon modified material suitable for large-ratio foaming, whose components include a main ingredient and an additive, the main ingredient includes nylon, TPEE and EVA, and the additive includes a dispersant.

[0006] The nylon accounts for 30%-40% of the total amount of the main material components, the TPEE accounts for 5%-15% of the total amount of the main material components, the EVA accounts for 50%-60% of the total amount of the main material components, and the dispersant is added at 2%-4% of the total amount of the main material components.

[0007] The nylon accounts for 35% of the total components, the TPEE accounts for 10% of the total components, the EVA accounts for 55% of the total components, and the dispersant is added at 3% of the total components of the main material.

[0008] The EVA used is EVA with a VA content of 28%.

[0009] After being mixed by the blending equipment, the mixture is granulated by the mixing granulation equipment to produce a granular material product.

[0010] When applied to the foaming material component, the weight portion of the nylon modified material component is 10-20 parts of the total weight portion of the foaming material component.

[0011] The weight portion of the nylon modified material component is 15 parts of the total weight portion of the foaming material component.

[0012] A foaming material, comprising the nylon modified material and EVA, EPDM, POE, a wear-resistant agent, talcum powder, stearic acid, zinc oxide, zinc stearate, an odorless cross-linking agent and a high-temperature foaming agent; or, comprising the nylon modified material and EVA, EPDM, POE, stearic acid, zinc oxide, an odorless cross-linking agent and a high-temperature foaming agent; or, comprising the nylon modified material and EVA, POE, stearic acid, zinc oxide, an odorless cross-linking agent and a high-temperature foaming agent.

[0013] The EVA is EVA of model 7470, the EPDM is EPDM of model 3722 or 374, the POE is POE of model 8003, the anti-wear agent is anti-wear agent of model 108P, the talc is talc of model 818T, and the high-temperature foaming agent is high-temperature foaming agent of model AC6000.

[0014] The EVA accounts for 30%-40% of the total amount of the components, the nylon modified material accounts for 10%-20% of the total amount of the components, the EPDM accounts for 3%-7% of the total amount of the components, the POE accounts for 15%-25% of the total amount of the components, the wear-resistant agent accounts for 4%-8% of the total amount of the components, the talc accounts for 3%-7% of the total amount of the components, the stearic acid accounts for 0.1%-0.5% of the total amount of the components, the zinc oxide accounts for 0.5%-1% of the total amount of the components, the zinc stearate accounts for 0.3%-0.7% of the total amount of the components, the odorless cross-linking agent accounts for 0.3%-0.5% of the total amount of the components, and the high-temperature foaming agent accounts for 3%-5% of the total amount of the components; or, based on the total weight as 100% of the weight ratio of each of the following components, the weight of the EVA is 30-45kg, the weight of the nylon modified material is The weight of the EVA is 10-25kg, the weight of the EPDM is 3-10kg, the weight of the POE is 15-30kg, the weight of the stearic acid is 0.1-0.5kg, the weight of the zinc oxide is 0.5-1kg, the weight of the odorless cross-linking agent is 0.3-0.5kg, and the weight of the high-temperature foaming agent is 3-5kg; or, based on the total weight as 100% of the weight ratio of each of the following components, the weight of the EVA is 30-45kg, the weight of the nylon modified material is 10-25kg, the weight of the POE is 15-30kg, the weight of the stearic acid is 0.1-0.5kg, the weight of the zinc oxide is 0.5-1kg, the weight of the odorless cross-linking agent is 0.3-0.5kg, and the weight of the high-temperature foaming agent is 3-5kg. The EVA accounts for 30% of the total amount of the components, the nylon modified material accounts for 15% of the total amount of the components, the EPDM accounts for 5% of the total amount of the components, the POE accounts for 20% of the total amount of the components, the wear-resistant agent accounts for 6% of the total amount of the components, the talc accounts for 5% of the total amount of the components, the stearic acid accounts for 0.3% of the total amount of the components, the zinc oxide accounts for 0.8% of the total amount of the components, the zinc stearate accounts for 0.5% of the total amount of the components, the odorless cross-linking agent accounts for 0.38% of the total amount of the components, and the high-temperature foaming agent accounts for 3.9% of the total amount of the components; or, based on the total weight as 100% of the weight ratio of each of the following components, the weight of the EVA is 35kg, the weight of the nylon modified material is The weight of the EVA is 15kg, the weight of the EPDM is 5kg, the weight of the POE is 20kg, the weight of the stearic acid is 0.3kg, the weight of the zinc oxide is 0.8kg, the weight of the odorless cross-linking agent is 0.38kg, and the weight of the high-temperature foaming agent is 4kg; or, based on the total weight as 100%, the weight of each of the following components is converted into a weight ratio, the weight of the EVA is 35kg, the weight of the nylon modified material is 20kg, the weight of the POE is 20kg, the weight of the stearic acid is 0.3kg, the weight of the zinc oxide is 0.8kg, the weight of the odorless cross-linking agent is 0.38kg, and the weight of the high-temperature foaming agent is 4kg.

[0015] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: the components of the above nylon modified material include nylon, TPEE, EVA and a dispersant. At present, in the art, nylon and TPEE are usually used separately, and these two materials and EVA are not considered to be used in combination. The present invention provides a new material for the combined application of these two materials. Among them, TPEE thermoplastic polyester elastomer is referred to as TPEE, which is a type of linear block copolymer containing PBT (polybutylene terephthalate) polyester hard segment (crystalline phase) and aliphatic polyester or polyether (amorphous phase) soft segment, which has high strength and high elasticity; among them, nylon (Nylon), chemical name polyamide, English name Polyamide, referred to as PA, is a general term for thermoplastic resins containing repeating amide groups - [NHCO] - on the main chain of the molecule, including aliphatic PA, aliphatic-aromatic PA and aromatic PA. Due to the alkane chain -CH- composition on the nylon molecular chain, the internal rotation assist of the C-C single bond is small, the macromolecule has good compliance, and the hydrogen bond slides back and forth, so the rebound performance is good, the elasticity is better than EPDM, and the strength is higher than POE. Therefore, the application of nylon materials has the advantages of elasticity and strength superior to EPDM and POE. Nylon molecular chains contain a large number of amide groups and imine groups. The covalent bonds and hydrogen bonds between these groups interact with each other, making the nylon molecular chains very stable and tight. Combined with the application of TPEE and other above-mentioned materials, they can exhibit extremely high elasticity, strength and toughness.

[0016] The above-mentioned nylon modified material can achieve a high foaming ratio. In the trial production test, the ratio reached about 205%. The product has better performance in elasticity, strength and other aspects. The product has good stability in all aspects. It is an ideal product. It is known in the industry that it is the product with the best performance under this high foaming ratio, and is particularly suitable for the production of high-elasticity and high-strength shoe materials.

[0017] In summary, the above-mentioned purpose of the present invention is achieved. DETAILED DESCRIPTION

[0018] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0019] The present embodiment discloses a high-elasticity and high-strength nylon modified material suitable for large-ratio foaming, and its components include a main ingredient and an additive, wherein the main ingredient includes nylon, TPEE and EVA, and the additive includes a dispersant. The component formula is obtained based on the research and application development of nylon materials. Nylon (Nylon), chemical name polyamide, English name Polyamide, referred to as PA, is a general term for thermoplastic resins containing repeating amide groups-[NHCO]-on the main chain of the molecule, including aliphatic PA, aliphatic-aromatic PA and aromatic PA. Due to the alkane chain-CH-composition on the nylon molecular chain, the internal rotation assistance of the C-C single bond is small, the macromolecule has good compliance, and the hydrogen bond slides back and forth, so the rebound performance is good. In addition, the nylon molecular chain contains a large number of amide groups and imine groups, and the covalent bonds and hydrogen bonds between these groups interact with each other, making the nylon molecular chain very stable and tight. TPEE thermoplastic elastomer is a high-performance engineering-grade elastomer with excellent mechanical strength, elasticity and durability. TPEE contains a linear block copolymer of PBT (polybutylene terephthalate) polyester hard segment (crystalline phase) and aliphatic polyester or polyether (amorphous phase) soft segment. It is a high-performance engineering-grade elastomer with the following characteristics: Excellent bending fatigue resistance: Under low strain conditions, the modulus of TPEE is higher than that of other thermoplastic elastomers of the same hardness; Impact resistance: Especially at low temperatures (-40°C); Wear resistance and chemical resistance: It has good wear resistance and chemical corrosion resistance; Processing performance: TPEE has good melt fluidity, stable melt state, low shrinkage, fast crystallization speed, and easy processing. EVA (ethylene-vinyl acetate copolymer) is a general-purpose polymer, which is copolymerized by ethylene and vinyl acetate. It has good flexibility: it has good flexibility and elasticity, and is suitable for products that require soft and elastic materials; good cold resistance: it can still maintain good physical properties in low temperature environments; excellent processing performance: it is easy to process and shape, and is suitable for various molding processes; environmental performance: some EVA materials can be recycled and meet environmental protection requirements. EVA has important application value in many industries due to its excellent performance and wide application fields. Dispersants play a role in compatibility in material mixing production. Through the excellent properties of the above-mentioned nylon, TPEE and EVA, it can be seen that the materials obtained by combining the three and the excellence of the application of the material can be seen. In the process, TPEE and EVA are used to modify nylon, and the effect of nylon modified material products is improved by combining their own characteristics, including dispersants.

[0020] In the research and development of the technical solution of the present invention, not only predictions were made on the basis of knowledge theory, but also multiple groups of trial production tests with different ratios were carried out. The following table shows three groups of test ratio data, which are obtained through trial production tests. The preferred ratio range of the present invention is that the nylon accounts for 30%-40% of the total amount of the main material components, the TPEE accounts for 5%-15% of the total amount of the main material components, the EVA accounts for 50%-60% of the total amount of the main material components, and the dispersant is added at 2%-4% of the total amount of the main material components.

[0021] raw materials Ratio 1 Ratio 2 Ratio three Ratio 4 Ratio 5 Ratio 6 nylon 10％ 15％ 20％ 25％ 30％ 35％ TPEE 10％ 10％ 10％ 10％ 10％ 10％ EVA 80％ 75％ 70％ 65％ 60％ 55％ Dispersants 2％ 2％ 2％ 2％ 2％ 3％

[0022] In the test of adjusting the proportion, with the continuous reduction of EVA and the continuous increase of nylon, the proportion in the mixture shows a continuous downward trend, but the melting point of the mixture also increases with the continuous increase. In the test, the proportion of nylon rose to 40%, and the melting point of the mixture was too high, which was no longer suitable for the EVA foaming process, and would lead to failure to melt and easy foaming. In the test data, the proportion six in the above table is the best proportion, that is, the nylon accounts for about 35% of the total amount of the components, the TPEE accounts for about 10% of the total amount of the components, and the EVA accounts for about 55% of the total amount of the components. The dispersant is added at about 3% of the total amount of the main ingredient components to obtain the best proportion of the technical product of the present invention. In addition, the EVA described in the trial production test of the present invention uses EVA with a VA content of 28%, which is stable for the performance of the obtained material product.

[0023] The production and application of the nylon modified material developed in the present invention is to mix the component raw materials of the above-mentioned formula ratio through a blending device, and then granulate them through a mixing granulation device to produce a granular material product, so as to obtain the nylon modified material for combined addition and application of the foaming material. This method can avoid the raw materials of the nylon modified material from being too dispersed and reacted during the production process of the foaming material, thereby affecting the physical properties of the nylon modified material of the present invention.

[0024] The following is a table of data obtained by conducting a foaming material application test on the above-mentioned nylon modified material and conducting a trial production test on a shoe sole foaming material containing the nylon modified material of the present invention.

[0025]

[0026]

[0027] The foaming material obtained by the trial production test of the present invention, the following components are several components that obtain ideal test values ​​in the test, and the components of formulas 2 and 3 in the above table include the nylon modified material and EVA, EPDM, POE, wear-resistant agent, talcum powder, stearic acid, zinc oxide, zinc stearate, odorless cross-linking agent and high-temperature foaming agent. The components of formula 2 in the above table include the nylon modified material and EVA, EPDM, POE, stearic acid, zinc oxide, odorless cross-linking agent and high-temperature foaming agent. There is also a component of formula 5 in the above table including the nylon modified material and EVA, POE, stearic acid, zinc oxide, odorless cross-linking agent and high-temperature foaming agent. In the test, the EVA used was EVA of model 7470, the EPDM used was EPDM of model 3722 or 374, the POE used was POE of model 8003, the anti-wear agent used was anti-wear agent of model 108P, the talc used was talc of model 818T, and the high-temperature foaming agent used was high-temperature foaming agent of model AC6000; the selection and use of these materials is stable for the performance of the obtained material products

[0028] The following table shows the production process conditions of the above formula ratio:

[0029]

[0030] The following table shows the physical property test results of the above five formula ratios:

[0031]

[0032]

[0033] The above formula 1 is without adding the nylon modified material of the present invention, and it has the lowest test values ​​in tensile strength, elongation, delamination tear and rebound rate, which are the performances pursued by the technology of the present invention, while the test values ​​of these performances of the other several formulas with the nylon modified material of the present invention are significantly improved, which shows that the nylon modified material of the present invention can play the role of high elasticity and high strength. In addition, it can be seen from the above table that as the amount of the nylon modified material increases, the specific gravity is continuously reduced and the elasticity is continuously improved, but the thermal shrinkage is also increasing. Considering the on-site production process, the thermal shrinkage should be controlled within 2%. Therefore, the nylon modified material of the present invention is applied to the foaming material component, and the weight of the nylon modified material component is preferably 10-20 parts of the total weight of the foaming material component. In the above table test data, the best amount of nylon modified material is 15%, or the weight of the nylon modified material component is 15 parts of the total weight of the foaming material component.

[0034] Through the above research and development trial production test of the present invention, some of the foaming materials obtained by the formula ratio can be applied to products in multiple different fields, such as the field of shoe materials, the field of sports products, the field of automotive products, the field of furniture products, etc. The preferred formula is as follows:

[0035] In formulas 2 and 3, the EVA accounts for 30%-40% of the total components, the nylon modified material accounts for 10%-20% of the total components, EPDM accounts for 3%-7% of the total components, POE accounts for 15%-25% of the total components, the wear-resistant agent accounts for 4%-8% of the total components, talc accounts for 3%-7% of the total components, stearic acid accounts for 0.1%-0.5% of the total components, zinc oxide accounts for 0.5%-1% of the total components, zinc stearate accounts for 0.3%-0.7% of the total components, the odorless cross-linking agent accounts for 0.3%-0.5% of the total components, and the high-temperature foaming agent accounts for 3%-5% of the total components. In the trial production test, the following ratio is better: the EVA accounts for 30% of the total amount of the components, the nylon modified material accounts for 15% of the total amount of the components, the EPDM accounts for 5% of the total amount of the components, the POE accounts for 20% of the total amount of the components, the wear-resistant agent accounts for 6% of the total amount of the components, the talc accounts for 5% of the total amount of the components, the stearic acid accounts for 0.3% of the total amount of the components, the zinc oxide accounts for 0.8% of the total amount of the components, the zinc stearate accounts for 0.5% of the total amount of the components, the odorless cross-linking agent accounts for 0.38% of the total amount of the components, and the high-temperature foaming agent accounts for 3.9% of the total amount of the components;

[0036] Formula 4, according to the total weight of 100% conversion of the following components weight ratio, the weight of the EVA is 30-45kg, the weight of the nylon modified material is 10-25kg, the weight of the EPDM is 3-10kg, the weight of the POE is 15-30kg, the weight of the stearic acid is 0.1-0.5kg, the weight of the zinc oxide is 0.5-1kg, the weight of the odorless cross-linking agent is 0.3-0.5kg, and the weight of the high-temperature foaming agent is 3-5kg. The following ratio is better in the trial production test: according to the total weight of 100% conversion of the following components weight ratio, the weight of the EVA is 35kg, the weight of the nylon modified material is 15kg, the weight of the EPDM is 5kg, the weight of the POE is 20kg, the weight of the stearic acid is 0.3kg, the weight of the zinc oxide is 0.8kg, the weight of the odorless cross-linking agent is 0.38kg, and the weight of the high-temperature foaming agent is 4kg.

[0037] Formula 5, based on the total weight of 100% conversion of the following components by weight, the weight of the EVA is 30-45kg, the weight of the nylon modified material is 10-25kg, the weight of POE is 15-30kg, the weight of stearic acid is 0.1-0.5kg, the weight of zinc oxide is 0.5-1kg, the weight of odorless cross-linking agent is 0.3-0.5kg, and the weight of high-temperature foaming agent is 3-5kg. The following ratio is better in the trial production test: based on the total weight of 100% conversion of the following components by weight, the weight of the EVA is 35kg, the weight of the nylon modified material is 20kg, the weight of POE is 20kg, the weight of stearic acid is 0.3kg, the weight of zinc oxide is 0.8kg, the weight of odorless cross-linking agent is 0.38kg, and the weight of high-temperature foaming agent is 4kg.

[0038] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A high-elasticity and high-strength nylon modified material suitable for large-ratio foaming, comprising a main material and an additive, characterized in that: The main materials include nylon, TPEE and EVA, and the additives include a dispersant.

2. A high-elasticity and high-strength nylon modified material suitable for large-ratio foaming as claimed in claim 1, characterized in that: The nylon accounts for 30%-40% of the total amount of the main material components, the TPEE accounts for 5%-15% of the total amount of the main material components, the EVA accounts for 50%-60% of the total amount of the main material components, and the dispersant is added at 2%-4% of the total amount of the main material components.

3. A high elasticity and high strength nylon modified material suitable for large-ratio foaming as claimed in claim 2, characterized in that: The nylon accounts for 35% of the total components, the TPEE accounts for 10% of the total components, the EVA accounts for 55% of the total components, and the dispersant is added at 3% of the total components of the main material.

4. A high-elasticity and high-strength nylon modified material suitable for large-ratio foaming as described in any one of claims 1 to 4, characterized in that: The EVA used is EVA with a VA content of 28%; and / or, the components are mixed by a blending device and then granulated by a mixing granulation device to produce a granular material product.

5. A high-elasticity and high-strength nylon modified material suitable for large-ratio foaming as described in any one of claims 1 to 4, characterized in that: When applied to the foaming material component, the weight portion of the nylon modified material component is 10-20 parts of the total weight portion of the foaming material component.

6. A high-elasticity and high-strength nylon modified material suitable for large-ratio foaming as claimed in claim 5, characterized in that: The weight portion of the nylon modified material component is 15 parts of the total weight portion of the foaming material component.

7. A foaming material, characterized in that: The components include the nylon modified material as described in any one of claims 1 to 4 and EVA, EPDM, POE, abrasion resistant agent, talcum powder, stearic acid, zinc oxide, zinc stearate, an odorless cross-linking agent and a high-temperature foaming agent; Alternatively, the components include the nylon modified material and EVA, EPDM, POE, stearic acid, zinc oxide, an odorless cross-linking agent and a high-temperature foaming agent; Alternatively, the components include the nylon modified material and EVA, POE, stearic acid, zinc oxide, an odorless cross-linking agent and a high-temperature foaming agent.

8. A foam material according to claim 7, characterized in that: The EVA is EVA of model 7470, the EPDM is EPDM of model 3722 or 374, the POE is POE of model 8003, the anti-wear agent is anti-wear agent of model 108P, the talc is talc of model 818T, and the high-temperature foaming agent is high-temperature foaming agent of model AC6000.

9. A foam material according to claim 7 or 8, characterized in that: The EVA accounts for 30%-40% of the total amount of the components, the nylon modified material accounts for 10%-20% of the total amount of the components, the EPDM accounts for 3%-7% of the total amount of the components, the POE accounts for 15%-25% of the total amount of the components, the wear-resistant agent accounts for 4%-8% of the total amount of the components, the talc accounts for 3%-7% of the total amount of the components, the stearic acid accounts for 0.1%-0.5% of the total amount of the components, the zinc oxide accounts for 0.5%-1% of the total amount of the components, the zinc stearate accounts for 0.3%-0.7% of the total amount of the components, the odorless cross-linking agent accounts for 0.3%-0.5% of the total amount of the components, and the high-temperature foaming agent accounts for 3%-5% of the total amount of the components; Alternatively, the weight ratio of the following components is calculated based on the total weight as 100%, the weight of the EVA is 30-45kg, the weight of the nylon modified material is 10-25kg, the weight of the EPDM is 3-10kg, the weight of the POE is 15-30kg, the weight of the stearic acid is 0.1-0.5kg, the weight of the zinc oxide is 0.5-1kg, the weight of the odorless cross-linking agent is 0.3-0.5kg, and the weight of the high-temperature foaming agent is 3-5kg; Alternatively, based on the total weight being 100%, the weight of the following components is converted into a weight ratio: the weight of the EVA is 30-45kg, the weight of the nylon modified material is 10-25kg, the weight of the POE is 15-30kg, the weight of the stearic acid is 0.1-0.5kg, the weight of the zinc oxide is 0.5-1kg, the weight of the odorless cross-linking agent is 0.3-0.5kg, and the weight of the high-temperature foaming agent is 3-5kg.

10. A foam material according to claim 9, characterized in that: The EVA accounts for 30% of the total amount of the components, the nylon modified material accounts for 15% of the total amount of the components, the EPDM accounts for 5% of the total amount of the components, the POE accounts for 20% of the total amount of the components, the wear-resistant agent accounts for 6% of the total amount of the components, the talc accounts for 5% of the total amount of the components, the stearic acid accounts for 0.3% of the total amount of the components, the zinc oxide accounts for 0.8% of the total amount of the components, the zinc stearate accounts for 0.5% of the total amount of the components, the odorless cross-linking agent accounts for 0.38% of the total amount of the components, and the high-temperature foaming agent accounts for 3.9% of the total amount of the components; Alternatively, the weight ratio of the following components is calculated based on the total weight as 100%, the weight of the EVA is 35kg, the weight of the nylon modified material is 15kg, the weight of the EPDM is 5kg, the weight of the POE is 20kg, the weight of stearic acid is 0.3kg, the weight of zinc oxide is 0.8kg, the weight of the odorless cross-linking agent is 0.38kg, and the weight of the high-temperature foaming agent is 4kg; Alternatively, based on the total weight being 100%, the weight of the following components is converted into the following weight ratio: the weight of the EVA is 35 kg, the weight of the nylon modified material is 20 kg, the weight of the POE is 20 kg, the weight of the stearic acid is 0.3 kg, the weight of the zinc oxide is 0.8 kg, the weight of the odorless cross-linking agent is 0.38 kg, and the weight of the high-temperature foaming agent is 4 kg.

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