CN115536922B

CN115536922B - Portable high-resilience sole material and sports shoes

Info

Publication number: CN115536922B
Application number: CN202211340715.2A
Authority: CN
Inventors: 徐宝平; 陈海阳; 管玲
Original assignee: Fujian Putian Fubon Industrial Co ltd
Current assignee: Fujian Putian Fubon Industrial Co ltd
Priority date: 2022-10-29
Filing date: 2022-10-29
Publication date: 2023-08-01
Anticipated expiration: 2042-10-29
Also published as: CN115536922A

Abstract

The application relates to the field of sole materials, and specifically discloses a lightweight high-resilience sole material and sports shoes, wherein the sole material comprises the following raw materials in parts by weight: 30-58 parts of composite rubber material, 6-15 parts of light reinforcing agent, 1.5-3 parts of foaming agent, 2-5 parts of oxidized starch, 0.5-1 part of stearic acid, 4-9.5 parts of filler, 0.7-2 parts of dispersing agent and 1.8-3 parts of cross-linking agent; the foaming agent is a mixture of sodium dodecyl benzene sulfonate and gelatin water solution. The sports shoes comprise sole bodies and uppers arranged on the sole bodies, wherein the sole bodies are made of the sole material. The sole material density that this application obtained is suitable, mechanical properties is good, and has excellent resilience, tensile strength and elongation at break for the sports shoes of making have the advantage of light high resilience, and the comfort level of wearing is good, prevents to wear in-process for a long time and breaks, fracture scheduling problem.

Description

Portable high-resilience sole material and sports shoes

Technical Field

The present application relates to the field of sole materials, and more particularly, to a lightweight high resilience sole material and athletic footwear.

Background

At present, shoes are articles which are worn every day, and soles are an essential part for manufacturing shoes. Along with the improvement of living standard, the requirements of people on footwear living goods are also higher and higher, and the requirements of soles are more and more focused on the quality and comfort of the soles.

At present, the invention patent application with the application publication number of CN102850604A discloses a wear-resistant sole material which is prepared from the following raw materials in parts by weight: 80-85 parts of natural rubber, 40-50 parts of triethanolamine, 23-30 parts of white carbon black, 13-16 parts of oil-filled TPE, 6-8 parts of dipropylene glycol, 7 parts of dicumyl peroxide, 3-6 parts of plasticizer DOP and 7-8 parts of pentane. The sole material has good waterproof property and wear resistance. The inventor finds that when the sole material is used as the sole material of the sports shoes, a wearer often feels heavy, and the rebound resilience is insufficient in the sports process, so that the action of the wearer is greatly influenced.

Disclosure of Invention

In order to effectively improve the rebound resilience and portability of a sole material, so that the obtained sports shoe is light in weight and good in rebound resilience, the application provides a lightweight high-rebound resilience sole material and a sports shoe.

In a first aspect, the present application provides a lightweight high resilience sole material that adopts the following technical scheme:

a lightweight high-resilience sole material comprises the following raw materials in parts by weight: 30-58 parts of composite rubber material, 6-15 parts of light reinforcing agent, 1.5-3 parts of foaming agent, 2-5 parts of oxidized starch, 0.5-1 part of stearic acid, 4-9.5 parts of filler, 0.7-2 parts of dispersing agent and 1.8-3 parts of cross-linking agent; the foaming agent is a mixture of sodium dodecyl benzene sulfonate and gelatin water solution;

the light reinforcing agent is prepared through the following steps: and melting the polyester fiber and the polylactic acid to obtain a composite melt, and preparing the lightweight reinforcing agent from the viscose solution containing the polydopamine and the composite melt by an electrostatic spinning technology.

By adopting the technical scheme, the addition of the light reinforcing agent can effectively improve the mechanical strength of the sole material, reduce the consumption of the composite rubber material and the filler, and effectively reduce the total weight of the sole material, wherein the light reinforcing agent contains polydopamine, so that the light reinforcing agent has excellent cohesiveness, the cohesiveness among raw material components is promoted, a polydopamine three-dimensional network structure with super-strong viscosity can be formed inside the material, the internal structure of the sole material is effectively improved, the mechanical property of the sole material is improved, the occurrence of cracks and the like of the sole material in the use process is effectively reduced, and the tensile strength of the sole material is excellent. Because polylactic acid has certain degradability, the polylactic acid and polyester fiber are compounded and melted, and the degradability of the polylactic acid is weakened to a certain extent, so that a part of compact porous polymer is left due to the degradation of the polylactic acid in the long-term use process of the sole material, the portability of the sole material can be effectively ensured for a long time, and the sole material still has excellent mechanical properties such as tensile strength and the like.

The gelatin aqueous solution contained in the foaming agent not only can reduce bubble breakage and play a role in stabilizing bubbles, but also can be compounded with sodium dodecyl benzene sulfonate to form compact pores inside, so that the sole material is light in weight and convenient to wear, and oxidized starch is used as a cross-linking agent of the gelatin aqueous solution, and under the cooperation of the composite rubber material, a sole base material with excellent rebound resilience is formed, and meanwhile, excellent tensile strength can be given to the sole material, so that the sole material has good rebound resilience and elongation at break.

The filler can be filled in gaps among the components, so that the mechanical property of the sole material is improved in an auxiliary manner, the filler is matched with the light reinforcing agent, the problems of fracture and the like of the sole can be effectively reduced, the dispersing agent is favorable for uniform dispersion among the components, the overall uniformity of the prepared sole material is improved, and the sole material is further more excellent.

Preferably, the viscose solution containing polydopamine is prepared by the following steps: dissolving dopamine hydrochloride powder in water, regulating pH to 8-8.5, stirring, heating to accelerate reaction, and making into viscose containing polydopamine.

By adopting the technical scheme, dopamine in the dopamine hydrochloride solution can be subjected to autoxidation in a weak alkaline environment to generate quinone, the quinone is rearranged to form DHI, then the DHI is further polymerized into polydopamine, and the reaction is accelerated by heating, so that the viscose solution containing polydopamine can be rapidly formed.

Preferably, the weight ratio of the dopamine hydrochloride to the water is 1.2: (1-2.5).

Through adopting above-mentioned technical scheme, dopamine hydrochloride itself has good water solubility, and the additive amount of optimizing water can make the viscose liquid have good viscosity, not only is favorable to the electrostatic spinning operation to guarantee the bonding effect of light reinforcing agent, can bond the complex with other components, and then improve the performance of sole material.

Preferably, the weight ratio of the polyester fiber to the polylactic acid to the viscose containing polydopamine is (2-3.7): 1-2.3): 4-6.

By adopting the technical scheme, the dosage ratio of the polyester fiber to the polylactic acid to the viscose is optimized so as to improve the cohesive force and mechanical property of the prepared light reinforcing agent.

Preferably, the weight ratio of the sodium dodecyl benzene sulfonate to the gelatin water solution is 1 (2-3.3).

Through adopting above-mentioned technical scheme, adopt sodium dodecyl benzene sulfonate and gelatin aqueous solution misce bene in above-mentioned proportion, the foaming agent that obtains can prevent the little bubble and merge the increase for the bubble diameter of the bubble of introducing is less, keeps the little bubble of formation to distribute evenly and the structure is stable, introduces tiny, even bubble into sole material, plays the effect of lightening sole weight, thereby lets sole material more light, improves the use comfort of sole simultaneously.

Preferably, the composite rubber material is at least two of isoprene rubber, butadiene rubber and ethylene-vinyl acetate copolymer.

Preferably, the composite rubber material is isoprene rubber, butadiene rubber and ethylene-vinyl acetate copolymer with the weight ratio of (1-2.3) to (2.4-4.3).

By adopting the technical scheme, the isoprene rubber has good elasticity, tensile strength and wear resistance, the butadiene rubber has excellent elasticity and processability, the ethylene-vinyl acetate copolymer has good chemical stability and ageing resistance, the performances among the components are mutually compensated, and the prepared sole has excellent chemical stability, rebound resilience and mechanical property, is convenient to process and mix uniformly, and is beneficial to industrial production.

Preferably, the filler is at least two of mica powder, carbon black and light calcium carbonate.

It is further preferred that the filler is a mixture of mica powder, carbon black and light calcium carbonate.

By adopting the technical scheme, the carbon black and the light calcium carbonate have small granularity and high mechanical strength, are dispersed between components as the filler, play a role in reinforcing, are favorable for improving the mechanical property of the sole material, have good elasticity and toughness, are favorable for improving the rebound resilience and tensile strength of the sole material, and can further improve the quality of the sole by taking the mixture of the mica powder, the carbon black and the light calcium carbonate as the filler.

Preferably, the cross-linking agent is DCP cross-linking agent, and the dispersing agent is polyacrylamide.

By adopting the technical scheme, the DCP cross-linking agent is beneficial to cross-linking and vulcanization among components, and the performance of the sole material is further improved. The dispersing agent adopts polyacrylamide, so that not only can the uniform mixing of all components be promoted, but also the molecules of the polyacrylamide can be subjected to bridging adsorption with suspended particles dispersed in the solution, so that the viscosity among all the components is increased, the possibility of cracking of the sole material is reduced, and the tensile strength of the sole material is improved.

In a second aspect, the present application provides an athletic shoe, which adopts the following technical scheme:

the sports shoe comprises a sole body and an upper arranged on the sole body, wherein the sole body is made of the sole material.

Through adopting above-mentioned technical scheme, the sports shoes that adopts above-mentioned sole material to make have light in weight, resilience height, wear light comfort level high advantage, and the tensile strength of sports shoes is good, difficult cracked problem of appearing.

In summary, the present application has the following beneficial effects:

1. the addition of the light reinforcing agent can effectively improve the mechanical strength of the sole material, reduce the consumption of the composite rubber material and the filler, and effectively reduce the total weight of the sole material, wherein the light reinforcing agent contains polydopamine, so that the light reinforcing agent has excellent cohesiveness, promotes the cohesiveness among raw material components, can form a polydopamine three-dimensional network structure with super-strong viscosity inside the material, effectively improves the internal structure of the sole material, improves the mechanical property of the sole material, effectively reduces the conditions of cracks and the like of the sole material in the use process, and has good tensile strength. Because polylactic acid has certain degradability, the polylactic acid and polyester fiber are compounded and melted, and the degradability of the polylactic acid is weakened to a certain extent, so that partial porous polymer is left due to the degradation of the polylactic acid in the long-term use process of the sole material, the portability of the sole material can be effectively ensured for a long time, and the sole material still has excellent mechanical properties such as tensile strength and the like.

2. The gelatin aqueous solution contained in the foaming agent not only can reduce bubble breakage and play a role in stabilizing bubbles, but also can be compounded with sodium dodecyl benzene sulfonate to form compact pores inside, so that the sole material is light in weight and convenient to wear, and oxidized starch is used as a cross-linking agent of the gelatin aqueous solution, and under the cooperation of the composite rubber material, a sole base material with excellent rebound resilience is formed, and meanwhile, excellent tensile strength can be given to the sole material, so that the sole material has good rebound resilience and elongation at break.

Drawings

Fig. 1 is a schematic structural view of an athletic shoe according to example 1 of the present application.

Reference numerals illustrate: 1. a sole body; 2. an upper.

Detailed Description

The present application is described in further detail below with reference to examples.

Other materials used in this application are common commercially available materials, unless otherwise specified. Wherein the degree of polymerization of the polyester fiber is 120; isoprene rubber was purchased from Shanghai even Kangming chemical Co., ltd; butadiene rubber CAS number: 9003-12-2 with molecular weight of 100 ten thousand; the ethylene-vinyl acetate copolymer had a vinyl acetate content of 50%.

Preparation example of light reinforcing agent

Preparation example 1

The light reinforcing agent is prepared through the following steps: melting 2kg of polyester fiber and 1kg of polylactic acid to obtain a composite melt, and preparing a light reinforcing agent from 4kg of viscose solution containing polydopamine and the composite melt by an electrostatic spinning technology;

wherein the viscose solution containing polydopamine is prepared by the following steps: 1.2kg of dopamine hydrochloride powder is dissolved in 2.5kg of water, the pH is regulated to 8, the mixture is stirred uniformly, and the temperature is raised to 40 ℃ to accelerate the reaction for 35min.

Preparation example 2

The light reinforcing agent is prepared through the following steps: 3.7kg of polyester fiber and 2.3kg of polylactic acid are melted to obtain a composite melt, and 6kg of viscose solution containing polydopamine and the composite melt are subjected to electrostatic spinning technology to prepare a light reinforcing agent;

wherein the viscose solution containing polydopamine is prepared by the following steps: 1.2kg of dopamine hydrochloride powder is dissolved in 1kg of water, the pH is regulated to 8.5, the mixture is stirred uniformly, and the temperature is raised to 45 ℃ to accelerate the reaction for 35min.

Preparation example 3

The difference from preparation example 2 was that 3kg of polyester fiber, 1.7kg of polylactic acid, 5.2kg of viscose containing polydopamine, and the remainder was the same as preparation 3.

Preparation example 4

The difference from preparation example 3 is that 1.2kg of dopamine hydrochloride powder, 1.8kg of water and the rest is the same as preparation example 3.

Preparation example 5

The difference from preparation example 4 is that the light weight enhancer is prepared by the following steps: melting 1kg of polyester fiber and 3.5kg of polylactic acid to obtain a composite melt, and preparing a light reinforcing agent from 3.1kg of viscose solution containing polydopamine and the composite melt by an electrostatic spinning technology;

wherein the viscose solution containing polydopamine is prepared by the following steps: 1kg of dopamine hydrochloride powder is dissolved in 3kg of water, the pH is regulated to 8.5, the mixture is stirred uniformly, and the temperature is raised to 45 ℃ to accelerate the reaction for 35min.

Examples

Example 1

A lightweight high-resilience sole material comprises the following raw materials:

30kg of composite rubber material, 6kg of light reinforcing agent prepared in preparation example 1, 1.5kg of foaming agent, 2kg of oxidized starch, 0.5kg of stearic acid, 4kg of filler, 0.7kg of polyacrylamide and 1.8kg of DCP crosslinking agent;

wherein:

the weight ratio of the composite rubber material is 1:1 and butadiene rubber;

the weight ratio of the foaming agent is 1:2 and an aqueous gelatin solution;

the weight ratio of the filler is 1:1 and carbon black.

An athletic shoe comprises a sole body 1 and an upper 2 arranged on the sole body 1, wherein the sole body 1 is made of the sole material.

Example 2

The difference from the embodiment 1 is that,

the lightweight high-resilience sole material comprises the following raw materials:

58kg of composite rubber material, 15kg of light reinforcing agent prepared in preparation example 1, 3kg of foaming agent, 5kg of oxidized starch, 1kg of stearic acid, 9.5kg of filler, 2kg of polyacrylamide and 3kg of DCP crosslinking agent;

wherein:

the weight ratio of the composite rubber material is 2.3:4.3 a mixture of butadiene rubber and ethylene-vinyl acetate copolymer;

the weight ratio of the foaming agent is 1:3.3 a mixture of sodium dodecylbenzenesulfonate and aqueous gelatin solution;

the weight ratio of the filler is 1:2 with light calcium carbonate;

the remainder was the same as in example 1.

Example 3

The difference from the embodiment 1 is that,

44kg of composite rubber material, 12kg of light reinforcing agent prepared in preparation example 1, 2.3kg of foaming agent, 3.5kg of oxidized starch, 1kg of stearic acid, 7kg of filler, 1.2kg of polyacrylamide and 2.5kg of DCP crosslinking agent;

wherein:

the composite rubber material is a mixture of isoprene rubber, butadiene rubber and ethylene-vinyl acetate copolymer in a weight ratio of 1:1:2.4;

the weight ratio of the filler is 1:1 and light calcium carbonate;

the remainder was the same as in example 1.

Example 4

The difference from example 3 is that the composite rubber material is a mixture of isoprene rubber, butadiene rubber and ethylene-vinyl acetate copolymer in a weight ratio of 1:2:3; the remainder was the same as in example 3.

Example 5

The difference from example 3 is that the composite rubber material is a mixture of isoprene rubber, butadiene rubber and ethylene-vinyl acetate copolymer in a weight ratio of 3:0.7:1.9; the remainder was the same as in example 3.

Example 6

The difference from example 4 is that the weight ratio of the foaming agent is 1:2.5 sodium dodecylbenzenesulfonate and aqueous gelatin solution; the remainder was the same as in example 4.

Example 7

The difference from example 4 is that the foaming agent is a mixture of sodium dodecylbenzene sulfonate and aqueous gelatin solution in a weight ratio of 2:0.7; the remainder was the same as in example 4.

Example 8

The difference from example 6 is that the filler is a mixture of mica powder, carbon black and light calcium carbonate in a weight ratio of 2:1.2:1.7; the remainder was the same as in example 6.

Example 9

The difference from example 6 is that the light reinforcing agent of preparation example 2 was used, and the rest was the same as in example 6.

Example 10

The difference from example 6 is that the light reinforcing agent of preparation example 3 was used, and the rest was the same as in example 6.

Example 11

The difference from example 6 is that the light reinforcing agent of preparation example 4 was used, and the rest was the same as in example 6.

Example 12

The difference from example 6 is that the light reinforcing agent of preparation 5 was used, and the rest was the same as in example 6.

Comparative example

Comparative example 1

The difference from example 11 is that the lightweight reinforcing agent is replaced with an equal weight of polyester fiber, and the rest is the same as example 11.

Comparative example 2

The difference from example 11 is that the light weight enhancer is made via the following steps: the polyester fiber, polylactic acid and the viscose containing polydopamine were uniformly mixed to obtain a lightweight reinforcing agent, and the rest was the same as in example 11.

Comparative example 3

The difference from example 11 is that the foaming agent is sodium dodecylbenzenesulfonate, and the rest is the same as example 11.

Comparative example 4

The difference from example 11 is that no oxidized starch was added, and the rest was the same as in example 11.

Performance test

The samples prepared in examples 1 to 12 and comparative examples 1 to 4 were subjected to density testing in accordance with DIN53479 (plastic box elastomer test Density determination); the rebound resilience test was performed according to GB/T1681 (measurement of rebound resilience of vulcanized rubber), the elongation at break and the tensile strength were measured according to HG/T2580 (measurement of tensile strength and elongation at break of rubber), and the results are recorded in Table 1.

TABLE 1

As can be seen by combining examples 1-12 and combining Table 1, the sole material obtained by the method has the advantages of proper density, good mechanical property, excellent rebound resilience, tensile strength and elongation at break, and the manufactured sports shoes have the advantages of light weight and high rebound resilience, are good in wearing comfort, and can prevent the problems of fracture, cracking and the like in the long-term wearing process.

As can be seen from the combination of example 11 and comparative examples 1 to 2 and the combination of table 1, in comparative example 1, only polyester fiber was used as a light reinforcing agent, and in comparative example 2, only polyester fiber, polylactic acid and a viscose containing polydopamine were simply mixed, which had a significant effect on the density of the sole material, and the portability of the resulting sports shoe was significantly reduced, and the mechanical properties of the sole material were also significantly reduced, and the elongation at break and tensile strength of the material were poor. The addition of the light reinforcing agent can effectively improve the mechanical strength of the sole material, reduce the consumption of the composite rubber material and the filler, and effectively reduce the total weight of the sole material, wherein the light reinforcing agent contains polydopamine, so that the light reinforcing agent has excellent cohesiveness, promotes the cohesiveness among the raw material components, can form a polydopamine three-dimensional network structure with super-strong viscosity inside the material, effectively improves the internal structure of the sole material, improves the mechanical property of the sole material, effectively reduces the occurrence of cracks and other conditions of the sole material in the use process, and has good tensile strength. Because polylactic acid has certain degradability, the polylactic acid and polyester fiber are compounded and melted, and the degradability of the polylactic acid is weakened to a certain extent, so that partial porous polymer is left due to the degradation of the polylactic acid in the long-term use process of the sole material, the portability of the sole material can be effectively ensured for a long time, and the sole material still has excellent tensile strength and elongation at break.

As can be seen from the combination of example 11 and comparative examples 3-4 and table 1, comparative example 3 only uses sodium dodecylbenzenesulfonate as the foaming agent, absent an aqueous gelatin solution; the absence of oxidized starch in comparative example 4 has a significant impact on various properties of the sole material. Because the gelatin aqueous solution can not only reduce bubble breakage and play a role in stabilizing bubbles, but also be compounded with sodium dodecyl benzene sulfonate to form compact pores inside, so that the sole material is light in weight and convenient to wear, and oxidized starch is used as a cross-linking agent of the gelatin aqueous solution, under the cooperation of the composite rubber material, a sole base material with excellent rebound resilience is formed, and meanwhile, excellent tensile strength can be given to the sole material, so that the sole material has good rebound resilience and elongation at break.

The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.

Claims

1. The lightweight high-resilience sole material is characterized by comprising the following raw materials in parts by weight: 30-58 parts of composite rubber material, 6-15 parts of light reinforcing agent, 1.5-3 parts of foaming agent, 2-5 parts of oxidized starch, 0.5-1 part of stearic acid, 4-9.5 parts of filler, 0.7-2 parts of dispersing agent and 1.8-3 parts of cross-linking agent; the foaming agent is a mixture of sodium dodecyl benzene sulfonate and gelatin water solution; the weight ratio of the sodium dodecyl benzene sulfonate to the gelatin water solution is 1 (2-3.3);

the light reinforcing agent is prepared through the following steps: melting polyester fibers and polylactic acid to obtain a composite melt, and preparing a lightweight reinforcing agent from the viscose solution containing polydopamine and the composite melt by an electrostatic spinning technology; the weight ratio of the polyester fiber to the polylactic acid to the viscose containing the polydopamine is (2-3.7) (1-2.3) (4-6).

2. The lightweight high resilience sole material according to claim 1, wherein: the viscose solution containing polydopamine is prepared by the following steps: dissolving dopamine hydrochloride powder in water, regulating pH to 8-8.5, stirring, heating to accelerate reaction, and making into viscose containing polydopamine.

3. The lightweight high resilience sole material according to claim 2, wherein: the weight ratio of the dopamine hydrochloride to the water is 1.2: (1-2.5).

4. The lightweight high resilience sole material according to claim 1, wherein: the composite rubber material is at least two of isoprene rubber, butadiene rubber and ethylene-vinyl acetate copolymer.

5. The lightweight high resilience sole material according to claim 4, wherein: the composite rubber material is isoprene rubber, butadiene rubber and ethylene-vinyl acetate copolymer with the weight ratio of 1 (1-2.3) to 2.4-4.3.

6. The lightweight high resilience sole material according to claim 1, wherein: the filler is at least two of mica powder, carbon black and light calcium carbonate.

7. The lightweight high resilience sole material according to claim 1, wherein: the cross-linking agent is DCP cross-linking agent, and the dispersing agent is polyacrylamide.

8. An athletic shoe, characterized in that: comprising a sole body (1) and an upper (2) arranged on the sole body (1), the sole body (1) being made of a sole material according to any one of claims 1 to 7.