Wear-resistant anti-skid sole material and synthesis method thereof

Abstract

The invention relates to a wear-resistant antiskid sole material and a synthesis method thereof, and belongs to the field of sole materials. The wear-resistant anti-skid sole material is prepared from the following components in parts by weight: 45-65 parts of ethylene-vinyl acetate copolymer EVA, 20-35 parts of nitrile rubber, 10-23 parts of anti-aging particles, 4-8 parts of nano zinc oxide, 5-8 parts of nano magnesium oxide, 2-4 parts of hollow glass beads and 3-6 parts of white carbon black. According to the invention, the anti-aging particles are synthesized, the chloroprene rubber is taken as a base material for synthesis of the anti-aging particles, the chlorotriazine DACT and the anti-aging agent are compounded in the chloroprene rubber, the dispersing agent is utilized to uniformly disperse the chlorotriazine DACT and the anti-aging agent in the chloroprene rubber, and the chloroprene rubber can protect the chlorotriazine DACT and the anti-aging agent; the action time of the chlorotriazine DACT and the anti-aging agent is prolonged, so that the anti-aging performance of the sole is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shoe sole materials, and more particularly to a wear-resistant and anti-skid shoe sole material and a synthesis method thereof. BACKGROUND

[0002] With the continuous improvement of living standards, consumers have higher requirements for the style, comfort, durability, etc. of shoes. There are various types of shoes, and different types of shoes have different requirements for the material of the shoe sole. For example, the shoe sole of sports shoes requires high wear resistance, good anti-skid performance, and good comfort, and sometimes needs to have certain elasticity; the shoe sole of casual shoes requires comfort and air permeability; the shoe sole of leather shoes requires softness, comfort, and good air permeability, etc. To meet these different requirements, different material formulations are used to make the shoe sole.

[0003] In fact, most types of shoes have basic requirements for the anti-skid performance and wear resistance of the shoe sole. The anti-skid performance directly affects the safety of the user, especially for the elderly and children, who have relatively poor balance and are relatively fragile. Once they slip, the consequences are unpredictable, ranging from redness and bleeding to serious injuries, and even life-threatening. The wear resistance is directly related to the use cost of the consumer. If the shoe sole has poor wear resistance, the service life of the shoe will be greatly reduced, and the function of the shoe will be severely weakened. For example, the shoe sole of a football shoe has small protrusions. If the wear resistance of the shoe sole material is poor, the small protrusions of the football shoe will be quickly worn flat, seriously affecting the use experience of football players and greatly reducing the service life of the football shoe.

[0004] Therefore, how to provide a shoe sole material with good wear resistance and anti-skid performance, while also having comfort and safety, is a difficult problem to be solved in the field. SUMMARY

[0005] To solve the above problems, the present application provides a wear-resistant and anti-skid shoe sole material and a synthesis method thereof.

[0006] In one aspect, the present application provides a wear-resistant and anti-skid shoe sole material, and the technical solution is as follows: A wear-resistant and anti-skid shoe sole material is made of components including the following weight fractions: Ethylene-vinyl acetate copolymer EVA 45-65 parts, nitrile rubber 20-35 parts, anti-aging particles 10-23 parts, nano zinc oxide 4-8 parts, nano magnesium oxide 5-8 parts, hollow glass microbeads 2-4 parts, and white carbon black 3-6 parts.

[0007] Preferably, the anti-aging particles are made of raw materials including the following weight fractions: chlorobutyl rubber (10-20) parts, dispersant (2-5) parts, chlorotriazine DACT (3-5) parts, and anti-aging agent (3-8) parts.

[0008] The ethylene-vinyl acetate copolymer EVA has good toughness, impact resistance, filler compatibility and heat sealing performance, and the nitrile rubber has good oil resistance, wear resistance, heat resistance and strong adhesion, so that the EVA and the nitrile rubber can be used as the sole base material to ensure that the sole has good basic comprehensive performance.

[0009] The synthesis of the anti-aging particles uses chlorobutyl rubber as a base material, and the chlorotriazine and the antioxidant are compounded in the chlorobutyl rubber, and the dispersant is used to uniformly disperse the chlorotriazine and the antioxidant in the chlorobutyl rubber. The chlorobutyl rubber can protect the chlorotriazine and the antioxidant, prolong the action time of the chlorotriazine and the antioxidant, and thus improve the anti-aging performance of the sole. It is worth noting that the chlorotriazine as an anti-aging additive can effectively improve the performance of the antioxidant, and the combination of the antioxidant and the anti-aging additive makes the performance of the anti-aging particles more excellent, and improves the compatibility between the anti-aging particles and the components of the sole.

[0010] The composite nano metal oxide has small particle size and high mechanical strength, and is dispersed between the components of the sole as a filler, which is beneficial to improve the mechanical properties of the sole. In addition, nano-alumina can also be used as an adhesive to better bond various nano metal oxides together.

[0011] On the other hand, the application provides a synthesis method of a wear-resistant and anti-skid sole material, and the technical scheme is as follows: A synthesis method of a wear-resistant and anti-skid sole material, comprising the following steps: Step 1, a certain weight of EVA and nitrile rubber is stirred and mixed uniformly, and then heated to a molten state to obtain a molten base material; Step 2, a certain weight of anti-aging particles, nano-zinc oxide, nano-magnesium oxide, hollow glass microspheres and white carbon black are added to the molten base material obtained in step 1, and then stirred and mixed uniformly, and then mixed to obtain a mixed molten mixture; Step 3, the mixed molten mixture obtained in step 2 is injected into an injection molding machine to obtain a wear-resistant and anti-skid sole material.

[0012] Specifically, the mixing temperature of step 2 is 150-170℃, and the mixing time is 1-3h.

[0013] The synthesis method of the anti-aging particles is as follows: 1), heat the chlorobutyl rubber to a molten state; 2), a certain amount of dispersant, chlorotriazine DACT and antioxidant are sequentially added to the molten chlorobutyl rubber, and then stirred and mixed uniformly to obtain a molten mixture; 3), the molten mixture obtained in step 2) is extruded and granulated to obtain anti-aging particles.

[0014] Preferably, the dispersing agent is at least one of magnesium stearate, calcium stearate and zinc stearate.

[0015] Preferably, the antioxidant is antioxidant 4010.

[0016] Preferably, the mass ratio of the neoprene, the dispersing agent, the chlorinated triazine DACT and the antioxidant is neoprene, dispersing agent, chlorinated triazine DACT, antioxidant = (10-20) : (2-5) : (3-5) : (3-8). Advantages

[0017] 1. The anti-aging particles are synthesized in the application, and the synthesis of the anti-aging particles uses neoprene as a base material, and the chlorinated triazine DACT and the antioxidant are compounded in the neoprene, and the dispersing agent is used to uniformly disperse the chlorinated triazine DACT and the antioxidant in the neoprene, the neoprene can protect the chlorinated triazine DACT and the antioxidant, prolong the action time of the chlorinated triazine DACT and the antioxidant, and thus improve the anti-aging performance of the shoe sole. It is worth noting that the chlorinated triazine as an anti-aging additive can effectively improve the performance of the antioxidant, and the combination of the antioxidant-anti-aging additive formed by the two makes the performance of the anti-aging particles more excellent, and at the same time improves the compatibility between the anti-aging particles and the components of the shoe sole.

[0018] 2. The hollow glass microbeads have the characteristics of light weight, large volume, high compressive strength, low oil absorption rate, good dispersibility and fluidity, high chemical stability and the like, and the appropriate addition amount can effectively reduce the material density, improve the tensile strength and bending modulus of the material, and also can greatly reduce the thermal conductivity of the material.

[0019] 3. The application takes ethylene-vinyl acetate copolymer EVA and nitrile rubber as a base material, wherein the EVA has good toughness, impact resistance, filler compatibility and heat sealing performance, the nitrile rubber has good oil resistance, wear resistance and heat resistance, and has strong adhesion, and taking the EVA and the nitrile rubber as the shoe sole base material can ensure that the shoe sole has good basic comprehensive performance.

[0020] 4. The application adds nano zinc oxide and nano magnesium oxide in the raw materials, and the above nano metal oxides have the advantages of small particle size and high mechanical strength, and are uniformly dispersed between the components of the shoe sole as fillers, which is beneficial to improve the mechanical properties of the shoe sole. In addition, the above nano metal oxides can also act as adhesives to better bond the components of the shoe sole together, effectively improving the integrity of the shoe sole. DETAILED DESCRIPTION Example 1

[0021] 1. The synthesis method of the anti-aging particles is as follows: 1-1, heat 15 kg of neoprene to a molten state; 1-2, 3.5 kg of magnesium stearate, 4 kg of chlorotriazine DACT, 5.5 kg of antioxidant 4010 are sequentially added to the molten neoprene, and stirred and mixed uniformly to obtain a molten mixture; 1-3, the molten mixture obtained in step 2) is extruded and granulated to obtain anti-aging granules.

[0022] 2, the synthesis method of the wear-resistant and anti-skid shoe sole material comprises the following steps: 2-1, after EVA 55 kg and nitrile rubber 27.5 kg are stirred and mixed uniformly, heat to a molten state to obtain a molten base; 2-2, add anti-aging granules 16.5 kg, nano zinc oxide 6 kg, nano magnesium oxide 6.5 kg, hollow glass microspheres 3 kg, and white carbon black 4.5 kg to the molten base obtained in step 2-1, stir and mix uniformly, then mix at 160℃ for 2h to obtain a mixed molten state mixture; 2-3, the mixed molten state mixture obtained in step 2-2 is injected into an injection molding machine to obtain a wear-resistant and anti-skid shoe sole material. Example 2

[0023] 1, the synthesis method of the anti-aging granules is as follows: 1-1, heat 10 kg of neoprene to a molten state; 1-2, 2 kg of magnesium stearate, 3 kg of chlorotriazine DACT, and 3 kg of antioxidant 4010 are sequentially added to the molten neoprene, and stirred and mixed uniformly to obtain a molten mixture; 1-3, the molten mixture obtained in step 2) is extruded and granulated to obtain anti-aging granules.

[0024] 2, the synthesis method of the wear-resistant and anti-skid shoe sole material comprises the following steps: 2-1, after EVA 45 kg and nitrile rubber 20 kg are stirred and mixed uniformly, heat to a molten state to obtain a molten base; 2-2, add anti-aging granules 10 kg, nano zinc oxide 4 kg, nano magnesium oxide 5 kg, hollow glass microspheres 2 kg, and white carbon black 3 kg to the molten base obtained in step 2-1, stir and mix uniformly, then mix at 150℃ for 1h to obtain a mixed molten state mixture; 2-3, the mixed molten state mixture obtained in step 2-2 is injected into an injection molding machine to obtain a wear-resistant and anti-skid shoe sole material. Example 3

[0025] 1, the synthesis method of the anti-aging granules is as follows: 1-1. Heat 20kg of chloroprene rubber to a molten state; 1-2. Add 5 kg of magnesium stearate, 5 kg of chlorotriazine DACT, and 8 kg of antioxidant 4010 to the molten chloroprene rubber in sequence, and stir to mix evenly to obtain a molten mixture; 1-3. The molten mixture obtained in step 2) is extruded and granulated to obtain anti-aging particles.

[0026] 2. A method for synthesizing a wear-resistant and anti-skid sole material, comprising the following steps: 2-1. Stir and mix 65 kg of EVA and 35 kg of nitrile rubber until uniformly mixed, and then heat to a molten state to obtain a molten base material; 2-2. Add 23 kg of anti-aging particles, 8 kg of nano zinc oxide, 8 kg of nano magnesium oxide, 4 kg of hollow glass microspheres, and 6 kg of white carbon black to the molten base material obtained in step 2-1, stir and mix evenly, and knead at 170° C. for 3 h to obtain a kneaded molten mixture; 2-3. Add the kneaded molten mixture obtained in step 2-2 into an injection molding machine for injection molding to obtain a wear-resistant and anti-skid sole material.

[0027] Comparative Example 1 The synthesis process is similar to that of Example 1, and the only difference from Example 1 is that chlorotriazine DACT is not added during the preparation of the anti-aging particles.

[0028] Comparative Example 2 The synthesis process was similar to that of Example 1, with the only difference from Example 1 being that 2 kg of chlorotriazine DACT was added during the preparation of the anti-aging particles.

[0029] Comparative Example 3 The synthesis process was similar to that of Example 1, with the only difference from Example 1 being that 6 kg of chlorotriazine DACT was added during the preparation of the anti-aging particles.

[0030] Comparative Example 4 The synthesis process was similar to that of Example 1, except that 1 kg of hollow glass microspheres was added.

[0031] Comparative Example 5 The synthesis process was similar to that of Example 1, except that 5 kg of hollow glass microspheres were added.

[0032] Performance Testing The soles obtained in Examples 1-3 and Comparative Examples 1-5 were sampled and the following performance tests were performed on the samples. The results are shown in Table 1.

[0033] (1) Wear resistance test.

[0034] The wear resistance of the sole is tested by GB / T 1689-1998, and the smaller the value is, the better the wear resistance is.

[0035] (ii) Elongation at break test

[0036] The elongation at break of the sole is tested by GB / T 528-2009, and the larger the value is, the better the tensile property is.

[0037] (iii) Anti-aging performance test First, 100g of the wear-resistant and slip-resistant sole material formula is injection molded into a 10mm*10mm square plate, and after being placed for 24 hours, it is used as a test sample. The test sample is divided into two parts and placed in a natural environment and under ultraviolet light, respectively. After 24 months, the sample is weighed, and the anti-aging performance of the sample is evaluated by observing the change in the mass of the sample. The anti-aging performance index is calculated using the following formula: D = (10-W) / 10, In the formula: D: anti-aging performance index (%); W: mass of the aged cable material (g); The smaller the anti-aging performance index is, the better the anti-aging performance of the sample is.

[0038] The test results are shown in Table 1.

[0039] Table 1

[0040] From the test results in Table 1, it can be seen that: 1. From Examples 1-3, it can be seen that the wear resistance, tensile property and anti-aging performance of the sole synthesized according to the present application are all very excellent, which shows that the sole with excellent performance can be obtained by compounding the raw materials according to the present application.

[0041] 2. In Comparative Example 1, no anti-aging additive chlorinated triazine DACT is added, and the anti-aging performance index is significantly worse, which shows that the anti-aging additive halogenated triazine has an important influence on the anti-aging performance of the sole. It is worth noting that the absence of the anti-aging additive chlorinated triazine DACT not only affects the anti-aging performance of the sole, but also reduces the wear resistance and tensile property of the sole to a certain extent, which shows that the anti-aging additive chlorinated triazine DACT not only affects the anti-aging performance of the sole, but also affects the wear resistance and tensile property of the sole.

[0042] 3、Comparative Example 2 added anti-aging auxiliary chlorotriazine DACT, but the content of chlorotriazine DACT is lower than the content range defined in the application, that is, the content of chlorotriazine DACT is too low, which breaks the lower limit of the range set by the application. From the test results, it can be seen that the anti-aging performance of Comparative Example 2 is significantly reduced compared to Example 1, even compared to Comparative Example 1, the anti-aging performance of Comparative Example 2 is still very obvious, which shows that when the content of chlorotriazine DACT is lower than the content range defined in the application, the anti-aging auxiliary effect no longer exists, and it will also have a "negative" effect on the performance of the anti-aging agent, which is worse than not adding chlorotriazine DACT.

[0043] Similarly, Comparative Example 3 added anti-aging auxiliary chlorotriazine DACT, but the content of chlorotriazine DACT is higher than the content range defined in the application, that is, the content of chlorotriazine DACT is too high, which breaks the upper limit of the range set by the application. From the test results, it can be seen that the anti-aging performance of Comparative Example 3 is significantly reduced compared to Example 1, even compared to Comparative Example 1, the anti-aging performance of Comparative Example 3 is still very obvious, which shows that when the content of chlorotriazine DACT is higher than the content range defined in the application, the anti-aging auxiliary effect no longer exists, and it will also have a "negative" effect on the performance of the anti-aging agent, which is worse than not adding chlorotriazine DACT.

[0044] From Comparative Examples 2-3, it can be seen that in order to achieve good anti-aging effect, anti-aging auxiliary chlorotriazine DACT is indispensable, and its content is crucial to its anti-aging auxiliary effect, which needs to be maintained within the range set by the application. Exceeding this range will significantly reduce the anti-aging performance of the sole.

[0045] The specific embodiments are only an explanation of the application and are not a limitation of the application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, but as long as they are within the scope of the claims of the application, they are protected by the Patent Law.

Claims

1. An abrasion resistant, slip resistant shoe sole material characterized by, Synthesized by the following components comprising the following weight parts: Ethylene-vinyl acetate copolymer EVA 45-65 parts, nitrile rubber 20-35 parts, anti-aging particles 10-23 parts, nano zinc oxide 4-8 parts, nano magnesium oxide 5-8 parts, hollow glass microbeads 2-4 parts, white carbon black 3-6 parts; The anti-aging particles are made of raw materials including: chlorobutyl rubber, dispersant, chlorinated triazine DACT, antioxidant.

2. The slip-resistant shoe sole material of claim 1, wherein The dispersant is at least one of magnesium stearate, calcium stearate, and zinc stearate.

3. The slip-resistant shoe sole material of claim 1, wherein The antioxidant is antioxidant 4010.

4. The slip-resistant shoe sole material of claim 1, wherein The mass ratio of chlorobutyl rubber, dispersant, chlorinated triazine DACT, and antioxidant is chlorobutyl rubber, dispersant, chlorinated triazine DACT, and antioxidant = (10-20): (2-5): (3-5): (3-8).

5. A process for the synthesis of the wear-resistant, slip-resistant shoe sole material according to any one of claims 1 to 4, characterized in that Comprising the following steps: Step 1, a certain weight part of EVA, nitrile rubber is stirred and mixed uniformly, then heated to a molten state to obtain a molten base; Step 2, a certain weight part of anti-aging particles, nano zinc oxide, nano magnesium oxide, hollow glass microbeads, and white carbon black is added to the molten base obtained in step 1, stirred and mixed uniformly, then mixed to obtain a mixed molten mixture; Step 3, the mixed molten mixture obtained in step 2 is added to an injection molding machine for injection molding to obtain a wear-resistant and anti-slip shoe sole material.

6. The method of synthesis of claim 5, wherein, The synthesis method of the anti-aging particles is as follows: 1) Heat the chlorobutyl rubber to a molten state; 2) Add a certain amount of dispersant, chlorinated triazine DACT, and antioxidant to the molten chlorobutyl rubber in sequence, stir and mix uniformly to obtain a molten mixture; 3) The molten mixture obtained in step 2) is extruded and granulated to obtain anti-aging particles.

7. The method of synthesis of claim 6, wherein, The mass ratio of chlorobutyl rubber, dispersant, chlorinated triazine DACT, and antioxidant is chlorobutyl rubber, dispersant, chlorinated triazine DACT, and antioxidant = (10-20): (2-5): (3-5): (3-8).

8. The method of synthesis of claim 7, wherein, The mixing temperature of step 2 is 150-170℃, and the mixing time is 1-3h.

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