Non-slip shoe sole and method of making same

Abstract

The application discloses a kind of antiskid shoe sole and preparation method thereof, a kind of antiskid shoe sole, by mass parts, comprising the following components: polyol 90-110 parts, isocyanate 140-150 parts, hardening agent 14.95-23.4 parts, defoaming agent 0.69-1.82 parts, catalyst 0.23-0.78 parts, wear-resistant agent 0.46-1.56 parts.The shoe sole prepared by the application has very high transparency compared with traditional rubber, the density of the RPU shoe sole of the application is 1.0-1.1g / cm 3 , it can be thinner under the premise of approaching the density of traditional rubber and not affecting physical properties, so the RPU shoe sole of the application is lighter than traditional shoe sole, DIN wear resistance can reach ≤20, and the antiskid performance is excellent, dynamic dry antiskid reaches ≥1.1, dynamic wet antiskid can reach ≥0.7, hardness is 62-68A, elongation rate is ≥450%, breaking strength is ≥12N / mm 2 .

Description

Technical Field

[0001] This invention belongs to the field of anti-slip shoe outsole preparation, and particularly relates to an anti-slip shoe outsole and its preparation method. Background Technology

[0002] Currently manufactured rubber outsoles possess excellent abrasion resistance, extensibility, tear resistance, and slip resistance. However, rubber outsoles also have unavoidable drawbacks: poor transparency, poor tear resistance and insufficient abrasion resistance if the outsole is too thin, and excessive weight if the outsole is too thick. The superior abrasion resistance, mechanical properties, and tensile strength of rubber are due to its high density (typical rubber outsole density: 1.2 g / cm³). 3 Lightweight rubber density: 0.98 g / cm³ 3 The amount obtained in exchange. Injection-molded rubber (micro-foamed injection-molded rubber density: 0.68 g / cm³) 3 Non-foamed injection-molded rubber density: 0.95 g / cm³ 3 Compared to rubber outsoles made using traditional processes, non-foamed polyurethane outsoles have a lower density, but their performance is inferior. While commercially available non-foamed polyurethane outsoles possess excellent physical properties, they lack plasticity and aesthetic appeal, resulting in flat, sidewall-less outsoles. Currently, using non-foamed polyurethane in basketball shoes presents certain problems. The high-intensity friction of basketball causes the outsole to heat up, reducing its high-temperature abrasion resistance. After just a few high-intensity basketball games, the outsole wears down. Summary of the Invention

[0003] The purpose of this invention is to provide an anti-slip shoe outsole and its preparation method, so as to overcome at least one of the above-mentioned defects in the prior art.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] The present invention provides an anti-slip shoe outsole, which, by weight, comprises the following components: 90-110 parts of polyol, 140-150 parts of isocyanate, 14.95-23.4 parts of hardener, 0.69-1.82 parts of defoamer, 0.23-0.78 parts of catalyst, and 0.46-1.56 parts of abrasion resistant agent.

[0006] Preferably, it also includes 6.9-15.6 parts of an anti-yellowing agent and 0.46-1.3 parts of a leveling agent.

[0007] Preferably, the hardener is 20402HARD, the defoamer is A1581, the catalyst is CATA2060, the leveling agent is CA20107, the abrasion resistant agent is TPU-903, and the anti-yellowing agent is GSY-6025.

[0008] Preferably, the outsole of the anti-slip shoe has sidewalls.

[0009] This invention also provides a method for preparing an anti-slip shoe outsole, comprising the following steps: S1: heating polyol and isocyanate at 45℃-55℃ for 10-15 hours; S2: stirring the isocyanate and other ingredients heated in step S1 until homogeneous, with a stirring time of 10-25 minutes, to obtain a premix; S3: heating the mold and maintaining the mold temperature at 45℃-60℃; S4: uniformly spraying a release agent onto the inner surface of the mold cavity after heating in step S3, and then uniformly drying the release agent for later use; S5: adding the mixture from step S2... Add solvent to the premix, then add the polyol heated in step S1, and stir thoroughly for 8-15 seconds to obtain the mixture. S6: Pour the mixture obtained in step S5 into the mold processed in step S4, cover the vacuum cover of the mold, and perform the first vacuum treatment for 8-15 seconds. S7: After the first vacuum treatment in step S6 is completed, open the vacuum cover of the mold, scrape off the excess mixture, then cover the vacuum cover of the mold and perform the second vacuum treatment for 3-8 minutes to obtain the non-slip shoe outsole.

[0010] Preferably, in step S1, the mass ratio of polyol to isocyanate is 1:1.27-1.67.

[0011] Preferably, in step S2, the ingredients, by mass parts, include the following components: 14.95-23.4 parts of hardener, 0.69-1.82 parts of defoamer, 0.23-0.78 parts of catalyst, and 0.46-1.56 parts of wear-resistant agent.

[0012] Preferably, the ingredients also include: 6.9-15.6 parts of anti-yellowing agent and 0.46-1.3 parts of leveling agent.

[0013] Preferably, in step S5, the solvent is ethyl acetate, and the amount of ethyl acetate added is 0.08-0.85 times the mass of isocyanate.

[0014] Preferably, the heating method in steps S1 and S3 is to use an oven to bake the material. In step S4, the release agent is a water-based release agent. In step S5, the stirring speed is 1400-1800 r / min. In step S6, a scraper is used to scrape the excess mixture from one end of the mold along the plane of the mold to the other end of the mold.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. The non-slip shoe outsole obtained by this invention is made of non-foamed polyurethane (RPU), which has extremely high transparency compared to traditional rubber. This allows for the addition of colorants during manufacturing, resulting in richer color saturation. The high transparency also provides more creative color options for the outsole. From a formulation perspective, the RPU outsole provided by this invention has a density of 1.0-1.1 g / cm³. 3 By achieving a density close to that of traditional rubber without compromising its physical properties, the RPU outsole of this invention can be made thinner, thus making it lighter than traditional outsoles. The RPU outsole provided by this invention has a DIN abrasion resistance of ≤20 and excellent anti-slip performance, with dynamic dry anti-slip reaching ≥1.1 and dynamic wet anti-slip reaching ≥0.7. The RPU outsole of this invention has a hardness of 62-68A, an elongation of ≥450%, and a tensile strength of ≥12N / mm². 2 .

[0017] 2. By selecting and proportioning the components and combining them with molds, shoe outsoles with sidewalls can be produced, which not only improves the appearance but also provides users with a certain degree of lateral protection when wearing them for sports, reducing the possibility of slipping and falling to some extent. Detailed Implementation

[0018] The present invention will now be further described in conjunction with specific embodiments.

[0019] This embodiment provides an anti-slip shoe outsole, comprising the following components by weight: 100 parts polyol, 145 parts isocyanate, 20 parts hardener, 0.8 parts defoamer, 0.45 parts catalyst, 0.87 parts abrasion resistant agent, 8.3 parts anti-yellowing agent, and 0.93 parts leveling agent. The hardener is 20402HARD, the defoamer is A1581, the catalyst is CATA2060, the leveling agent is CA20107, the abrasion resistant agent is TPU-903, and the anti-yellowing agent is GSY-6025. The polyol in this embodiment provides excellent abrasion resistance to the shoe outsole, while the isocyanate provides flexibility, further enhancing the overall physical properties of the outsole.

[0020] Catalyst: Improves the internal and surface properties of shoe outsoles, causing the material to undergo a gelation reaction.

[0021] Hardener: Improves adhesion, maintains high gloss and hardness, and enhances the solvent resistance of shoe outsoles.

[0022] Abrasion-resistant agent: Enhances the abrasion resistance of the shoe outsole.

[0023] Anti-yellowing agent: Improves the anti-aging properties of materials.

[0024] Leveling agents: enhance gloss, prevent pinholes, improve substrate wettability, reduce surface tension, and make demolding easier.

[0025] Defoamer: controls the formation of PU foam.

[0026] Among them, the outsole of the non-slip shoe has sidewalls, which can improve the appearance of the product and also prevent it from tipping over.

[0027] The present invention also provides a method for preparing an anti-slip shoe outsole, which includes the following steps:

[0028] S1: Place 100 parts of polyol and 145 parts of isocyanate in an oven and bake at 50°C for 12 hours.

[0029] S2: Mix 145 parts of isocyanate and 31.35 parts of other ingredients obtained from baking in step S1 using a mixer for 20 minutes to obtain a premix. The ingredients, by weight, include the following components: 20 parts of hardener, 0.8 parts of defoamer, 0.45 parts of catalyst, 0.87 parts of abrasion resistant agent, 8.3 parts of anti-yellowing agent, and 0.93 parts of leveling agent.

[0030] S3: Place the mold to be produced into the oven and bake it for later use, keeping the mold temperature at 55℃.

[0031] S4: After baking in step S3, spray the water-based release agent evenly onto the inner surface of the mold cavity, and then use an air gun to blow the water-based release agent evenly dry for later use, so that the water-based release agent is evenly attached to the inner surface of the mold cavity.

[0032] S5: Add 12 parts of ethyl acetate to the premixed material from step S2, and then add the polyol baked in step S1. Stir thoroughly, adjusting the speed of the stirrer to 1500 r / min and stirring for 10 s to obtain the mixture.

[0033] S6: Pour the mixture obtained in step S5 into the mold processed in step S4, cover the mold with the vacuum cover, and perform the first vacuuming process for 12 seconds.

[0034] S7: After the first vacuuming process in step S6 is completed, open the vacuum cover of the mold and use a scraper to scrape the excess material from one end of the mold along the plane of the mold to the other end. Then close the vacuum cover of the mold and perform the second vacuuming process. The vacuuming time is 5 minutes to obtain the non-slip shoe outsole.

[0035] The non-slip shoe outsole produced by this invention is made of non-foamed polyurethane (RPU), which has extremely high transparency compared to traditional rubber. This allows for the addition of colorants during manufacturing, resulting in richer, more vibrant colors. The high transparency also provides greater creative freedom in color design for the outsole. From a formulation perspective, the density of the RPU outsole of this invention is 1.0-1.1 g / cm³. 3While maintaining a density close to that of traditional rubber without affecting its physical properties, this invention achieves a thinner sole (traditional rubber outsoles are 1.7mm thick, while the RPU outsole of this invention is 1.2mm thick), making it lighter than traditional outsoles. The RPU outsole of this invention has a DIN abrasion resistance of ≤20 (conventional abrasion-resistant rubber outsoles DIN: ≤70, Li-Ning GCU outsoles DIN: ≤35), and excellent slip resistance, with dynamic dry slip resistance reaching ≥1.1 and dynamic wet slip resistance reaching ≥0.7. The RPU outsole of this invention has a hardness of 62-68A, an elongation of ≥450%, and a tensile strength of ≥12N / mm². 2 .

[0036] By selecting and proportioning the components and combining them with molds, shoe outsoles with sidewalls can be produced, which not only improves the appearance but also provides users with a certain degree of lateral protection when wearing them for sports, reducing the possibility of slipping and falling to some extent.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A non-slip shoe outsole, characterized in that, By mass, it includes the following components: 90-110 parts of polyols; 140-150 parts isocyanate; Hardener 14.95-23.4 parts; Defoamer 0.69-1.82 parts; Catalyst: 0.23-0.78 parts; 0.46-1.56 parts of wear-resistant agent; The method for preparing the anti-slip shoe outsole includes the following steps: S1: Heat the polyol and isocyanate at 45℃-55℃ for 10-15 hours; S2: Stir the heated isocyanate and ingredients from step S1 until homogeneous for 10-25 minutes to obtain a premix. The ingredients, by mass, include the following components: 14.95-23.4 parts hardener; 0.69-1.82 parts defoamer; 0.23-0.78 parts catalyst; and 0.46-1.56 parts wear-resistant agent. S3: Heat the mold and maintain the mold temperature at 45℃-60℃; S4: Spray the mold release agent evenly onto the inner surface of the mold cavity after heating in step S3, and then blow the mold release agent evenly dry for later use; S5: Add solvent to the premixed material stirred in step S2, and then add the polyol heated in step S1. Stir thoroughly for 8-15 seconds to obtain the mixture. S6: Pour the mixture obtained in step S5 into the mold processed in step S4, cover the vacuum cover of the mold, and perform the first vacuuming process. The vacuuming time is 8-15 seconds. S7: After the first vacuuming process in step S6 is completed, open the vacuum cover of the mold, scrape off the excess mixture, then close the vacuum cover of the mold and perform the second vacuuming process. The vacuuming time is 3-8 minutes to obtain the non-slip shoe outsole.

2. The anti-slip shoe outsole according to claim 1, characterized in that: The ingredients also include 6.9-15.6 parts of anti-yellowing agent and 0.46-1.3 parts of leveling agent.

3. The anti-slip shoe outsole according to claim 2, characterized in that: The hardener is 20402HARD; The defoamer is A1581; The catalyst is CATA2060; The leveling agent is CA20107; The wear-resistant agent is TPU-903; The anti-yellowing agent is GSY-6025.

4. The anti-slip shoe outsole according to claim 1, characterized in that: The outsole of the anti-slip shoe has sidewalls.

5. A method for preparing an anti-slip shoe outsole, characterized in that, The preparation of the anti-slip shoe outsole according to any one of claims 1-4 includes the following steps: S1: Heat the polyol and isocyanate at 45℃-55℃ for 10-15 hours; S2: Stir the heated isocyanate and ingredients from step S1 until homogeneous for 10-25 minutes to obtain a premix. The ingredients, by mass, include the following components: 14.95-23.4 parts hardener; 0.69-1.82 parts defoamer; 0.23-0.78 parts catalyst; and 0.46-1.56 parts wear-resistant agent. S3: Heat the mold and maintain the mold temperature at 45℃-60℃; S4: Spray the mold release agent evenly onto the inner surface of the mold cavity after heating in step S3, and then blow the mold release agent evenly dry for later use; S5: Add solvent to the premixed material stirred in step S2, and then add the polyol heated in step S1. Stir thoroughly for 8-15 seconds to obtain the mixture. S6: Pour the mixture obtained in step S5 into the mold processed in step S4, cover the vacuum cover of the mold, and perform the first vacuuming process. The vacuuming time is 8-15 seconds. S7: After the first vacuuming process in step S6 is completed, open the vacuum cover of the mold, scrape off the excess mixture, then close the vacuum cover of the mold and perform the second vacuuming process. The vacuuming time is 3-8 minutes to obtain the non-slip shoe outsole.

6. The method for preparing an anti-slip shoe outsole according to claim 5, characterized in that: In step S1, the mass ratio of polyol to isocyanate is 1:1.27-1.

67.

7. The method for preparing an anti-slip shoe outsole according to claim 5, characterized in that, The ingredients also include: Anti-yellowing agent: 6.9-15.6 parts; Leveling agent 0.46-1.3 parts.

8. The method for preparing an anti-slip shoe outsole according to claim 5, characterized in that: In step S5, the solvent is ethyl acetate, and the amount of ethyl acetate added is 0.08-0.85 times the mass of isocyanate.

9. The method for preparing an anti-slip shoe outsole according to claim 5, characterized in that: The heating method in both steps S1 and S3 is to use an oven for baking. In step S4, the release agent is a water-based release agent; In step S5, the stirring speed is 1400-1800 r / min; In step S6, a scraper is used to scrape away excess material from one end of the mold along the plane of the mold to the other end.