Lightweight high-strength transparent polyurethane sole wear-resistant non-slip mat and preparation method thereof

Abstract

The invention discloses a light-weight high-strength transparent polyurethane sole wear-resistant non-slip mat and a preparation method thereof, the light-weight high-strength transparent polyurethane sole wear-resistant non-slip mat comprises diphenylmethane diisocyanate, the diphenylmethane diisocyanate is a semitransparent 60-65A polyurethane castable composed of isocyanate, polyol and a catalyst, the weight ratio of the isocyanate to the polyol is (77-79): 100, and the weight ratio of the catalyst to the polyurethane castable is (77-79): 100. The preparation method of the light-weight high-strength transparent polyurethane sole wear-resistant non-slip mat comprises the following steps: S1, preheating the polyol with the components provided by the invention in a drying oven until the polyol is completely molten into liquid; compared with a traditional material, the wear-resistant and anti-skid composite material has the advantages that the wear-resistant and anti-skid composite material is light in weight, high in wear resistance, good in elasticity and high in durability and has remarkable advantages especially in the aspects of wear resistance, skid resistance and durability, the wear-resistant and anti-skid composite material can be kept in a good state in various environments due to the stable physical performance, the service life is prolonged, and comfort and safety of a wearer are improved.

Description

Technical Field

[0001] The present invention relates to a lightweight, high-strength, transparent polyurethane sole wear-resistant and anti-skid pad, belonging to the technical field of footwear manufacturing, and in particular to a sole made of high-performance polyurethane material, which is applied to sports shoes, safety shoes, medical shoes and other fields. Background Art

[0002] The sole is the part of the shoe that contacts the ground. It is usually made of a variety of materials and has a variety of functions and characteristics. The main functions of the sole include providing friction, supporting and protecting the foot, while absorbing shock and providing comfort. The structure of the sole usually includes parts such as the outsole, midsole and heel, which work together to ensure the stability and comfort of the shoe when walking and exercising. The sole is made of a variety of materials, the most common of which are rubber, polyurethane (PU), EVA, leather, etc.

[0003] For example, a Chinese patent with publication number CN202340996U discloses a rubber sole, on the side of which a circle of rubber sole band is attached, and the rubber sole band is an integrally formed rubber sole band with luminous rubber having fluorescent powder distributed therein.

[0004] With the advancement of technology and people's continuous pursuit of quality of life, traditional sole materials such as rubber, EVA and PU soles have certain limitations in wear resistance, elasticity and comfort. Summary of the invention

[0005] The purpose of the present invention is to provide a lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for soles and a preparation method thereof, which has the characteristics of light weight, strong wear resistance, good elasticity and strong durability, and has significant advantages over traditional materials, especially in terms of wear resistance, anti-skid and durability. Its stable physical properties enable it to maintain a good state in a variety of environments, prolong its service life and improve the comfort and safety of the wearer.

[0006] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0007] A lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for soles and a preparation method thereof, comprising:

[0008] The invention discloses a translucent 60-65A polyurethane casting material composed of three components: isocyanate, polyol and catalyst.

[0009] The above-mentioned lightweight, high-strength, transparent polyurethane sole wear-resistant and anti-skid pad, wherein the weight ratio of the isocyanate to the polyol is (77-79):100.

[0010] The above-mentioned lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for soles, wherein the polyol is polyester polyol or polyether polyol.

[0011] A method for preparing a lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for a shoe sole comprises the following steps:

[0012] S1. Preheat the polyol provided by the present invention in an oven until it is completely melted into liquid;

[0013] S2, transferring the molten liquid in S1 to a stirrer, then adding the isocyanate provided by the present invention, and stirring and mixing the polyol and the isocyanate by the stirrer;

[0014] S3, transferring the mixed raw materials in S2 into a reactor, heating the reactor to 80-95° C., and evacuating the reactor for 2 hours to remove moisture and bubbles in the raw materials;

[0015] S4, preparing a mold for manufacturing the sole according to the design requirements, then injecting the polyurethane raw material processed in S3 into the mold, and forming the sole through a hot pressing process;

[0016] S5, hot pressing and curing the sole prepared in S4 through a hot pressing mold to improve the performance of the sole;

[0017] S6, placing the soles cured by hot pressing in S5 into a polyurethane molding cooling device, and cooling the molded soles by the cooling device;

[0018] S7, trimming and surface treating the sole cooled in S5 to ensure the appearance and performance of the sole.

[0019] The method for preparing the lightweight, high-strength, transparent polyurethane shoe sole wear-resistant and anti-skid pad is as follows: the temperature of the oven is controlled at 70 to 80° C., and the preheating time of the polyol is controlled at 8 to 10 hours.

[0020] The preparation method of the above-mentioned lightweight, high-strength, transparent polyurethane sole wear-resistant and anti-skid pad, wherein the polyol in S1 does not open the packaging barrel cover during the preheating process, and the polyol contains additives such as anti-yellowing agent and defoaming agent, but does not contain a catalyst.

[0021] The method for preparing the above-mentioned lightweight, high-strength, transparent polyurethane sole wear-resistant and anti-skid pad, wherein the rotation speed of the mixer in S2 is controlled at 150-200 r / min, the stirring time is controlled at 10-20 min, and the stirring temperature is controlled at 60-75°C.

[0022] In the method for preparing the above-mentioned lightweight, high-strength, transparent polyurethane sole wear-resistant and anti-skid pad, the mold in S4 adopts an overall vacuum process, so that the mold can produce a more complex pattern sole and avoid the generation of bubbles.

[0023] In the method for preparing the above-mentioned lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for soles, the temperature of the hot pressing mold in S5 is controlled at 50 to 100° C., and the hot pressing time is controlled at 2 to 4 hours.

[0024] In the method for preparing the above-mentioned lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for soles, the cooling device in S6 uses water cooling to cool the soles to ensure uniform heat dissipation of the soles.

[0025] Compared with the prior art, the advantages and positive effects of the present invention are:

[0026] 1. The lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for soles of the present invention has the characteristics of light weight, strong wear resistance, good elasticity and strong durability. It has significant advantages over traditional materials, especially in terms of wear resistance, anti-skid and durability. Its stable physical properties enable it to maintain a good state in a variety of environments, prolong its service life and improve the comfort and safety of the wearer;

[0027] 2. The lightweight, high-strength, transparent polyurethane sole wear-resistant and anti-skid pad of the present invention has excellent properties such as low temperature resistance, hydrolysis resistance, yellowing resistance, and stain resistance, and can improve the service life and aesthetics of the sole in various harsh environments;

[0028] 3. The lightweight, high-strength, transparent polyurethane sole wear-resistant and anti-skid pad of the present invention has sealed wear-resistant and anti-skid properties, thereby ensuring that the sole provides excellent anti-skid effects on different surfaces and weather conditions;

[0029] 4. The lightweight, high-strength, transparent polyurethane sole wear-resistant and anti-skid pad of the present invention adopts a lightweight design, which effectively reduces the overall weight of the shoes and improves wearing comfort;

[0030] 5. The lightweight, high-strength, transparent polyurethane sole wear-resistant and anti-skid pad of the present invention has high elasticity and durability, thereby providing excellent cushioning performance and a long service life for the sole;

[0031] 6. The lightweight, high-strength, transparent polyurethane sole wear-resistant and anti-skid pad of the present invention is suitable for various footwear products such as sports shoes, safety shoes, medical shoes, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0033] Figure 1 The present invention is a flow chart of a method for preparing a lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for a shoe sole. DETAILED DESCRIPTION

[0034] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0035] Example 1

[0036] Please refer to Figure 1 As shown, an embodiment of the present invention provides a lightweight, high-strength, transparent polyurethane sole wear-resistant and anti-skid pad and a preparation method thereof, including: diphenylmethane diisocyanate, diphenylmethane diisocyanate is a translucent, 60-65A polyurethane casting material composed of three components: isocyanate, polyol and catalyst.

[0037] Please refer to Figure 1 As shown, the weight ratio of isocyanate to polyol is (77-79):100.

[0038] Please refer to Figure 1 As shown, the polyol is a polyester polyol or a polyether polyol;

[0039] By adopting the above technical solution: using diphenylmethane diisocyanate as the main polyurethane raw material, the physical and chemical properties of the material are ensured.

[0040] Example 2

[0041] A method for preparing a lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for a shoe sole comprises the following steps:

[0042] S1. Preheat the polyol provided by the present invention in an oven until it is completely melted into liquid;

[0043] Among them, a high-precision metering pump is used to accurately mix a variety of polyurethane raw materials in a predetermined proportion to ensure the accuracy and stability of the formula;

[0044] The temperature of the oven is controlled at 70-80°C, and the preheating time of the polyol is controlled at 8-10 hours;

[0045] Among them, the polyol in S1 does not open the packaging barrel cover during the preheating process, and the polyol contains additives such as anti-yellowing agent and defoaming agent, but does not contain a catalyst;

[0046] S2, transferring the molten liquid in S1 to a stirrer, then adding the isocyanate provided by the present invention, and stirring and mixing the polyol and the isocyanate by the stirrer;

[0047] The speed of the mixer in S2 is controlled at 150-200 r / min, the stirring time is controlled at 10-20 min, and the stirring temperature is controlled at 60-75 °C.

[0048] S3, transferring the mixed raw materials in S2 into a reactor, heating the reactor to 80-95° C., and evacuating the reactor for 2 hours to remove moisture and bubbles in the raw materials;

[0049] By adopting the above technical solution: vacuum degassing is performed in the mixed polyurethane raw materials to remove bubbles, thereby greatly improving the density and uniformity of the material;

[0050] S4, preparing a mold for manufacturing the sole according to the design requirements, then injecting the polyurethane raw material processed in S3 into the mold, and forming the sole through a hot pressing process;

[0051] Among them, the mold in S4 adopts the overall vacuum process, which enables the mold to produce more complex pattern soles and avoid the generation of bubbles;

[0052] S5, hot pressing and curing the sole prepared in S4 through a hot pressing mold to improve the performance of the sole;

[0053] Among them, the temperature of the hot pressing mold in S5 is controlled at 50-100°C, and the hot pressing time is controlled at 2-4h;

[0054] By adopting the above technical solution: the sole material is fully cured through a hot pressing process to ensure its mechanical strength and durability;

[0055] S6, placing the soles cured by hot pressing in S5 into a polyurethane molding cooling device, and cooling the molded soles by the cooling device;

[0056] The cooling device in S6 uses water cooling to cool the sole to ensure uniform heat dissipation of the sole.

[0057] S7, trimming and surface treating the sole cooled in S5 to ensure the appearance and performance of the sole;

[0058] By adopting the above technical solution: the molded sole is trimmed and surface treated to ensure that the surface is smooth and flat.

[0059] The working principle of the present invention is: the lightweight, high-strength transparent polyurethane material of the present invention has excellent mechanical strength, elasticity and wear resistance due to the multiple hydrogen bonds and rigid segments in its molecular structure. By controlling the reaction conditions and formula ratio, combined with vacuum degassing, overall vacuum mold process, hot pressing curing process and high-precision metering pump, the performance of the polyurethane material is further optimized to ensure the high quality and long life of the product.

[0060] The above description shows and describes several preferred embodiments of the present invention, but as before, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept of this article through the above teachings or the technology or knowledge of the relevant field. And the changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A lightweight, high-strength, transparent polyurethane sole wear-resistant and anti-skid pad, comprising diphenylmethane diisocyanate, characterized in that: The diphenylmethane diisocyanate is a translucent 60-65A polyurethane casting material composed of three components: isocyanate, polyol and catalyst.

2. A lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for soles according to claim 1, characterized in that: The weight ratio of the isocyanate to the polyol is (77-79):

100.

3. The lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for soles according to claim 1, characterized in that: The polyol is polyester polyol or polyether polyol.

4. A method for preparing a lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for soles, characterized in that: The steps include: S1. Preheat the polyol provided by the present invention in an oven until it is completely melted into liquid; S2, transferring the molten liquid in S1 to a stirrer, then adding the isocyanate provided by the present invention, and stirring and mixing the polyol and the isocyanate by the stirrer; S3, transferring the mixed raw materials in S2 into a reactor, heating the reactor to 80-95° C., and evacuating the reactor for 2 hours to remove moisture and bubbles in the raw materials; S4, preparing a mold for manufacturing the sole according to the design requirements, then injecting the polyurethane raw material processed in S3 into the mold, and forming the sole through a hot pressing process; S5, hot pressing and curing the sole prepared in S4 through a hot pressing mold to improve the performance of the sole; S6, placing the soles cured by hot pressing in S5 into a polyurethane molding cooling device, and cooling the molded soles by the cooling device; S7, trimming and surface treating the sole cooled in S5 to ensure the appearance and performance of the sole.

5. The method for preparing a lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for soles according to claim 4, characterized in that: The temperature of the oven is controlled at 70-80° C., and the preheating time of the polyol is controlled at 8-10 hours.

6. The method for preparing a lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for soles according to claim 5, characterized in that: The polyol in S1 is packaged without opening the lid of the barrel during the preheating process, and the polyol contains additives such as an anti-yellowing agent and a defoaming agent, but does not contain a catalyst.

7. The method for preparing a lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for soles according to claim 6, characterized in that: The speed of the stirrer in S2 is controlled at 150-200 r / min, the stirring time is controlled at 10-20 min, and the stirring temperature is controlled at 60-75° C.

8. The method for preparing a lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for soles according to claim 7, characterized in that: The mold in the S4 adopts an overall vacuum process, so that the mold can produce more complex pattern soles and avoid the generation of bubbles.

9. The method for preparing a lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for soles according to claim 8, characterized in that: The temperature of the hot pressing mold in S5 is controlled at 50-100° C., and the hot pressing time is controlled at 2-4 hours.

10. The method for preparing a lightweight, high-strength, transparent polyurethane wear-resistant and anti-skid pad for soles according to claim 9, characterized in that: The cooling device in S6 uses water cooling to cool the sole to ensure uniform heat dissipation of the sole.

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