A high temperature resistant sole and shoe making process thereof

Abstract

The present application relates to a high temperature resistant sole, including a sole body, the sole body including a rubber layer and a high temperature resistant layer, the rubber layer is located above the high temperature resistant layer; a connecting portion is formed circumferentially on the outer wall of the rubber layer, and a gap is formed between the connecting portion and the outer wall of the rubber layer; a plurality of connecting holes are provided on the rubber layer and the connecting portion, and the high temperature resistant layer is filled in the gap and the connecting hole and coated on the outside of the rubber layer. The present application realizes a stable physical composite structure between the rubber layer and the high temperature resistant layer by melting the high temperature resistant layer at high temperature, filling the gap and the connecting hole and coating the rubber layer, and then cooling by molding. On the one hand, the processing method is more convenient, and on the other hand, the comprehensive performance is improved. The high temperature resistance of the high temperature resistant layer and the easier bonding performance of the rubber layer are utilized to improve the high temperature resistance of the sole and the bonding between the sole and the upper layer, thereby effectively improving the practicality and service life of the sole.

Description

Technical Field

[0001] The present application relates to the technical field of soles, and in particular to a high temperature resistant sole and a shoe making process thereof. Background Art

[0002] Current high temperature resistant soles are usually made of silicone rubber to achieve high temperature resistance, but the soles made in this way are difficult to be firmly bonded to the upper layer.

[0003] In view of the above-mentioned related technologies, the inventor believes that the existing high temperature resistant soles still need to be improved. Summary of the invention

[0004] In order to improve the high temperature resistance of the sole while maintaining good bonding performance between the sole and the upper layer, the present application provides a high temperature resistant sole and a shoemaking process thereof.

[0005] In the first aspect, the application provides a high temperature resistant sole adopting the following technical solution:

[0006] A high temperature resistant sole comprises a sole body, wherein the sole body comprises a rubber layer and a high temperature resistant layer, wherein the rubber layer is located above the high temperature resistant layer; a connecting portion is formed circumferentially on the outer wall of the rubber layer, and a gap is formed between the connecting portion and the outer wall of the rubber layer; a plurality of connecting holes are provided on the rubber layer and the connecting portion, and the high temperature resistant layer is filled in the gap and the connecting holes and is coated on the outside of the rubber layer.

[0007] By adopting the above technical scheme, the high temperature resistant layer is melted at high temperature and filled into the gap and the connecting holes formed between the connecting part and the rubber layer and is coated on the outside of the rubber layer, and then a stable physical composite structure between the rubber layer and the high temperature resistant layer is achieved through molding and cooling. On the one hand, the processing method is more convenient, and on the other hand, the comprehensive performance is improved. The high temperature resistance of the high temperature resistant layer and the easier bonding performance of the rubber layer are utilized to improve the high temperature resistance of the sole and the bonding between the sole and the upper layer, thereby effectively improving the practicality and service life of the sole.

[0008] Preferably, the communicating holes are respectively opened on the bottom of the rubber layer and the circumferential side wall of the connecting portion; and the communicating holes on the connecting portion are in a double-layer structure which is staggered up and down.

[0009] By adopting the above technical solution, the double-layer connecting holes staggered up and down on the bottom of the rubber layer and the circumferential side wall of the connecting part assist in stabilizing the physical connection between the rubber layer and the high temperature resistant layer, thereby achieving the purpose of improving the performance of the sole.

[0010] Preferably, the material of the high temperature resistant layer includes the following components in parts by weight:

[0011] 90-110 parts of methyl vinyl silicone rubber;

[0012] 40-60 parts of silicon dioxide;

[0013] 18-22 parts of polyurethane;

[0014] 8-12 parts silicone oil;

[0015] 1-2 parts of curing agent.

[0016] By adopting the above technical solution, methyl vinyl silicone rubber and polyurethane are compounded, and both silica and silicone oil show good stability in high temperature environment, and their synergistic addition can improve high temperature resistance.

[0017] Preferably, the material of the high temperature resistant layer further comprises, by weight, 5-6 parts of N-(2-ethanol)-maleic anhydride, 1-2 parts of (4-phenoxyphenoxy)acetic acid, 1-2 parts of sodium hydroxide and 7-9 parts of ethanol.

[0018] By adopting the above technical scheme, N-(2-ethanol)-maleic anhydride is further added to react with (4-phenoxyphenoxy)acetic acid. On the one hand, the resonance effect of the heat-resistant aromatic heterocycle increases the bond energy and thermal stability. On the other hand, the obtained ester product helps to improve the bonding performance, so that the high temperature resistance and adhesion of the high temperature resistant layer and the rubber layer can be improved simultaneously after being compounded.

[0019] Preferably, the material of the high temperature resistant layer further comprises 2-3 parts of hypochlorous acid and 1-2 parts of 3-trimethylsilyl-2-oxazolidinone by weight.

[0020] By adopting the above technical scheme, hypochlorous acid is added to react with the double bond group carried by N-(2-ethanol)-maleic anhydride, and under the alkaline catalysis of sodium hydroxide, the substituted alcohol hydroxyl group is further reacted with the ester group of 3-trimethylsilyl-2-oxazolidinone to obtain a new esterification product. On the one hand, the influence of the presence of unsaturated bonds on the high temperature stability is reduced; on the other hand, the introduction of Si-N bonds is also beneficial to assist in improving the high temperature resistance.

[0021] Preferably, the curing agent is isocyanate HT100.

[0022] Preferably, the rubber layer comprises the following components in parts by weight:

[0023] 90-110 parts of nitrile rubber;

[0024] 36-40 parts of silicon dioxide;

[0025] 8-12 parts of barium sulfate;

[0026] 15-18 parts of additives;

[0027] 3-7 parts PVC-440.

[0028] Preferably, the auxiliary agent comprises a plasticizer and an antioxidant in a weight ratio of 2:1, and the plasticizer is dioctyl phthalate and the antioxidant is antioxidant DNP.

[0029] In a second aspect, the present application provides a shoemaking process for high temperature resistant soles, which adopts the following technical solution:

[0030] A shoemaking process for high temperature resistant soles comprises the following steps:

[0031] S1. The rubber layer is obtained by injection molding, and the prepared rubber layer is embedded in the upper mold cover of the molded rubber mold, and the upper mold cover is formed in a shape that matches the rubber layer and is embedded in the rubber layer;

[0032] S2. The high temperature resistant layer of material is injection molded and cured and cut into blocks, and several blocks of high temperature resistant layer material are placed in the lower mold cavity of the molded rubber mold;

[0033] S3. After the mold is closed, heat treatment is performed at 140-180°C to melt the high temperature resistant layer and fill the gaps and connecting holes and cover the rubber layer to complete the composite of the rubber layer and the high temperature resistant layer;

[0034] S4. After the mold is cooled, the mold is opened and taken out to complete the production of the sole.

[0035] In summary, this application includes the following beneficial technical effects:

[0036] Through the gap formed between the connecting part and the rubber layer and the connecting holes on the connecting part and the rubber layer, the high temperature resistant layer is melted at high temperature and filled into the gap and the connecting holes and coated on the outside of the rubber layer, and then molded and cooled to fix the shape to realize a stable physical composite structure between the rubber layer and the high temperature resistant layer. On the one hand, the processing method is more convenient, and on the other hand, the comprehensive performance is improved. The high temperature resistance of the high temperature resistant layer and the easier bonding performance of the rubber layer are utilized to improve the high temperature resistance of the sole and the bonding between the sole and the upper layer, thereby effectively improving the practicality and service life of the sole;

[0037] The double-layer communicating holes staggered up and down on the bottom of the rubber layer and the circumferential side wall of the connecting part both assist in the stable physical connection between the rubber layer and the high temperature resistant layer, thereby achieving the purpose of improving the performance of the sole;

[0038] In the high temperature resistant layer, N-(2-ethanol)-maleic anhydride is added to react with (4-phenoxyphenoxy)acetic acid. On the one hand, the resonance effect of the heat-resistant aromatic heterocycle increases the bond energy and thermal stability. On the other hand, the obtained ester product helps to improve the bonding performance, so that the high temperature resistance and adhesion of the high temperature resistant layer and the rubber layer are simultaneously improved after being compounded.

[0039] In the high temperature resistant layer, hypochlorous acid is further added to react with the double bond groups carried on N-(2-ethanol)-maleic anhydride. Under the alkaline catalysis of sodium hydroxide, the substituted alcohol hydroxyl group is further reacted with the ester group of 3-trimethylsilyl-2-oxazolidinone to obtain a new esterification product. On the one hand, the influence of the presence of unsaturated bonds on the high temperature stability is reduced; on the other hand, the introduction of Si-N bonds is also beneficial to assist in improving the high temperature resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the exploded structure of the sole of an embodiment of the present application.

[0041] Explanation of the reference numerals: 1. sole body; 2. rubber layer; 21. connecting part; 22. gap; 3. high temperature resistant layer; 4. connecting hole. DETAILED DESCRIPTION

[0042] The present application is described in further detail below.

[0043] In this application, methyl vinyl silicone rubber is provided by Wenzhou Ouhai Nanbaixiang Fengyu Silicone Products Processing Plant; silicon dioxide is provided by Jinan Xinguan Chemical Products Co., Ltd., 300 mesh, density 1.1g / cm³; polyurethane is provided by Guangdong Wengjiang Chemical Reagent Co., Ltd., model RM-12W; silicone oil is provided by Wuxi Jiaxi Chemical Co., Ltd.; curing agent isocyanate HT100 is provided by Shanghai Shengyue International Trade Co., Ltd., CAS No. 75-13-8, viscosity (23°C) 2500±750mPa·s; (4-phenoxyphenoxy)acetic acid, CAS: 38559-90-9; nitrile rubber is provided by Zhenjiang Nandi Chemical Co., Ltd.; antioxidant DNP is provided by Shijiazhuang Jinhe Nanochemical Co., Ltd., CAS: 93-46-9; PVC-440 is provided by Jinan Changliyuan Chemical Technology Co., Ltd., CAS: 9002-86-2.

[0044] Unless otherwise specified, the raw materials used in the following embodiments can be obtained from common commercial sources. Example Example 1

[0045] This embodiment discloses a high temperature resistant sole and a shoe making process thereof; Figure 1 A high temperature resistant sole comprises a sole body 1, the sole body 1 comprises a rubber layer 2 and a high temperature resistant layer 3, the rubber layer 2 is located above the high temperature resistant layer 3; a connecting portion 21 is formed circumferentially on the outer wall of the rubber layer 2, and a gap 22 is formed between the connecting portion 21 and the outer wall of the rubber layer 2; a plurality of connecting holes 4 are provided on the rubber layer 2 and the connecting portion 21, the high temperature resistant layer 3 is filled in the gap 22 and the connecting holes 4 and is coated on the outside of the rubber layer 2.

[0046] Reference Figure 1The connecting holes 4 are respectively opened at the bottom of the rubber layer 2 and the circumferential side wall of the connecting part 21; and the connecting holes 4 on the connecting part 21 are in a double-layer structure staggered up and down; the connecting holes 4 at the bottom of the rubber layer 2 are in a diamond shape, and the connecting holes 4 on the connecting part 21 are in a square shape; the high temperature resistant layer 3 is filled in the gap 22 and the connecting holes 4 and coated on the outside of the rubber layer 2 to achieve a stable physical composite structure between the rubber layer 2 and the high temperature resistant layer 3. On the one hand, the processing method is more convenient, and on the other hand, the high temperature resistance of the high temperature resistant layer 3 and the easier bonding performance of the rubber layer 2 are utilized to improve the comprehensive performance of the sole.

[0047] The material of the high temperature resistant layer 3 includes the following components: methyl vinyl silicone rubber, silicon dioxide, polyurethane, silicone oil and curing agent, wherein the curing agent is isocyanate HT100; the content of each component is shown in Table 1 below.

[0048] The rubber layer 2 includes the following components: nitrile rubber, silicon dioxide, barium sulfate, additives and PVC-440, wherein the additives include a plasticizer and an antioxidant in a weight ratio of 2:1, and the plasticizer is dioctyl phthalate and the antioxidant is antioxidant DNP; the content of each component is shown in Table 1 below.

[0049] A shoe-making process for high temperature resistant soles, characterized in that it comprises the following steps:

[0050] S1. The rubber layer 2 is obtained by injection molding, and the prepared rubber layer 2 is embedded in the upper mold cover of the molded rubber mold, and the upper mold cover is formed in a shape that matches the rubber layer 2 and is embedded in the rubber layer 2;

[0051] S2. The high temperature resistant layer 3 is injection molded and cured and cut into blocks, and several blocks of high temperature resistant layer 3 are placed in the lower mold cavity of the molded rubber mold;

[0052] S3. After the mold is closed, the heat treatment is performed at 140°C to melt the high temperature resistant layer 3 and fill the gap 22 and the connecting hole 4 and cover the outside of the rubber layer 2, thereby completing the composite of the rubber layer 2 and the high temperature resistant layer 3;

[0053] S4. After the mold is cooled, the mold is opened and taken out to complete the production of the sole. Example 2

[0054] This embodiment discloses a high temperature resistant sole and a shoe making process thereof; Figure 1 A high temperature resistant sole comprises a sole body 1, the sole body 1 comprises a rubber layer 2 and a high temperature resistant layer 3, the rubber layer 2 is located above the high temperature resistant layer 3; a connecting portion 21 is formed circumferentially on the outer wall of the rubber layer 2, and a gap 22 is formed between the connecting portion 21 and the outer wall of the rubber layer 2; a plurality of connecting holes 4 are provided on the rubber layer 2 and the connecting portion 21, the high temperature resistant layer 3 is filled in the gap 22 and the connecting holes 4 and is coated on the outside of the rubber layer 2.

[0055] Reference Figure 1 The connecting holes 4 are respectively opened at the bottom of the rubber layer 2 and the circumferential side wall of the connecting part 21; and the connecting holes 4 on the connecting part 21 are in a double-layer structure staggered up and down; the connecting holes 4 at the bottom of the rubber layer 2 are in a diamond shape, and the connecting holes 4 on the connecting part 21 are in a square shape; the high temperature resistant layer 3 is filled in the gap 22 and the connecting holes 4 and coated on the outside of the rubber layer 2 to achieve a stable physical composite structure between the rubber layer 2 and the high temperature resistant layer 3. On the one hand, the processing method is more convenient, and on the other hand, the high temperature resistance of the high temperature resistant layer 3 and the easier bonding performance of the rubber layer 2 are utilized to improve the comprehensive performance of the sole.

[0056] The material of the high temperature resistant layer 3 includes the following components: methyl vinyl silicone rubber, silicon dioxide, polyurethane, silicone oil and curing agent, wherein the curing agent is isocyanate HT100; the content of each component is shown in Table 1 below.

[0057] The rubber layer 2 includes the following components: nitrile rubber, silicon dioxide, barium sulfate, additives and PVC-440, wherein the additives include a plasticizer and an antioxidant in a weight ratio of 2:1, and the plasticizer is dioctyl phthalate and the antioxidant is antioxidant DNP; the content of each component is shown in Table 1 below.

[0058] A shoe-making process for high temperature resistant soles, characterized in that it comprises the following steps:

[0059] S1. The rubber layer 2 is obtained by injection molding, and the prepared rubber layer 2 is embedded in the upper mold cover of the molded rubber mold, and the upper mold cover is formed in a shape that matches the rubber layer 2 and is embedded in the rubber layer 2;

[0060] S2. The high temperature resistant layer 3 is injection molded and cured and cut into blocks, and several blocks of high temperature resistant layer 3 are placed in the lower mold cavity of the molded rubber mold;

[0061] S3. After the mold is closed, the heat treatment is performed at 180°C to melt the high temperature resistant layer 3 and fill the gap 22 and the connecting hole 4 and cover the outside of the rubber layer 2, thereby completing the composite of the rubber layer 2 and the high temperature resistant layer 3;

[0062] S4. After the mold is cooled, the mold is opened and taken out to complete the production of the sole. Example 3

[0063] This embodiment discloses a high temperature resistant sole and a shoe making process thereof; Figure 1A high temperature resistant sole comprises a sole body 1, the sole body 1 comprises a rubber layer 2 and a high temperature resistant layer 3, the rubber layer 2 is located above the high temperature resistant layer 3; a connecting portion 21 is formed circumferentially on the outer wall of the rubber layer 2, and a gap 22 is formed between the connecting portion 21 and the outer wall of the rubber layer 2; a plurality of connecting holes 4 are provided on the rubber layer 2 and the connecting portion 21, the high temperature resistant layer 3 is filled in the gap 22 and the connecting holes 4 and is coated on the outside of the rubber layer 2.

[0064] Reference Figure 1 The connecting holes 4 are respectively opened at the bottom of the rubber layer 2 and the circumferential side wall of the connecting part 21; and the connecting holes 4 on the connecting part 21 are in a double-layer structure staggered up and down; the connecting holes 4 at the bottom of the rubber layer 2 are in a diamond shape, and the connecting holes 4 on the connecting part 21 are in a square shape; the high temperature resistant layer 3 is filled in the gap 22 and the connecting holes 4 and coated on the outside of the rubber layer 2 to achieve a stable physical composite structure between the rubber layer 2 and the high temperature resistant layer 3. On the one hand, the processing method is more convenient, and on the other hand, the high temperature resistance of the high temperature resistant layer 3 and the easier bonding performance of the rubber layer 2 are utilized to improve the comprehensive performance of the sole.

[0065] The material of the high temperature resistant layer 3 includes the following components: methyl vinyl silicone rubber, silicon dioxide, polyurethane, silicone oil and curing agent, wherein the curing agent is isocyanate HT100; the content of each component is shown in Table 1 below.

[0066] The rubber layer 2 includes the following components: nitrile rubber, silicon dioxide, barium sulfate, additives and PVC-440, wherein the additives include a plasticizer and an antioxidant in a weight ratio of 2:1, and the plasticizer is dioctyl phthalate and the antioxidant is antioxidant DNP; the content of each component is shown in Table 1 below.

[0067] A shoe-making process for high temperature resistant soles, characterized in that it comprises the following steps:

[0068] S1. The rubber layer 2 is obtained by injection molding, and the prepared rubber layer 2 is embedded in the upper mold cover of the molded rubber mold, and the upper mold cover is formed in a shape that matches the rubber layer 2 and is embedded in the rubber layer 2;

[0069] S2. The high temperature resistant layer 3 is injection molded and cured and cut into blocks, and several blocks of high temperature resistant layer 3 are placed in the lower mold cavity of the molded rubber mold;

[0070] S3. After the mold is closed, the heat treatment is performed at 160°C, so that the high temperature resistant layer 3 is melted and filled in the gap 22 and the connecting hole 4 and coated on the outside of the rubber layer 2, and the rubber layer 2 and the high temperature resistant layer 3 are composited;

[0071] S4. After the mold is cooled, the mold is opened and taken out to complete the production of the sole. Example 4

[0072] The difference from Example 1 is that the material of the high temperature resistant layer 3 also includes 5 parts of N-(2-ethanol)-maleic anhydride, 1 part of (4-phenoxyphenoxy)acetic acid, 1 part of sodium hydroxide, 7 parts of ethanol, 2 parts of hypochlorous acid and 1 part of 3-trimethylsilyl-2-oxazolidinone.

[0073] 3 parts of N-(2-ethanol)-maleic anhydride, (4-phenoxyphenoxy)acetic acid, 0.5 parts of sodium hydroxide and 5 parts of ethanol were mixed and stirred at 60° C. for 1 hour to obtain a mixture A;

[0074] The remaining N-(2-ethanol)-maleic anhydride was mixed with hypochlorous acid, and the mixture was stirred at 25° C. for 50 min. 3-trimethylsilyl-2-oxazolidinone, the remaining sodium hydroxide and the remaining ethanol were then added, and the mixture was stirred at 35° C. for 2 h to obtain a mixture B.

[0075] Infrared spectrum test of mixture A: at 1650cm -1 The stretching vibration peak of C=C appears at 1810cm -1 and 1742cm -1 Two C=O stretching vibration peaks of anhydride appear at 1740-1710cm -1 The stretching vibration peak of the ester group appears at , indicating the occurrence of the reaction.

[0076] Infrared spectrum test of the reaction product of N-(2-ethanol)-maleic anhydride and hypochlorous acid: 1650cm -1 The stretching vibration peak of C=C at 1810 cm -1 and 1742cm -1 There are two C=O stretching vibration peaks of anhydride at 950-850cm -1 There is a stretching vibration peak of Si-N bond at 1750-1735cm -1 The stretching vibration peak of the ester group appears at , indicating the occurrence of the reaction.

[0077] The materials of the high temperature resistant layer 3 , methyl vinyl silicone rubber, silicon dioxide, polyurethane, silicone oil, curing agent, compound A and compound B are mixed and injection-molded and cured, and then cut into blocks. Example 5

[0078] The difference from Example 2 is that the material of the high temperature resistant layer 3 also includes 6 parts of N-(2-ethanol)-maleic anhydride, 2 parts of (4-phenoxyphenoxy)acetic acid, 2 parts of sodium hydroxide, 9 parts of ethanol, 3 parts of hypochlorous acid and 2 parts of 3-trimethylsilyl-2-oxazolidinone.

[0079] 4 parts of N-(2-ethanol)-maleic anhydride, (4-phenoxyphenoxy)acetic acid, 0.6 parts of sodium hydroxide and 6 parts of ethanol were mixed, and stirred at 70° C. for 2 hours to obtain a mixture A;

[0080] The remaining N-(2-ethanol)-maleic anhydride was mixed with hypochlorous acid, and the mixture was stirred at 30° C. for 60 min. 3-trimethylsilyl-2-oxazolidinone, the remaining sodium hydroxide and the remaining ethanol were then added, and the mixture was stirred at 40° C. for 3 h to obtain a mixture B.

[0081] The materials of the high temperature resistant layer 3 , methyl vinyl silicone rubber, silicon dioxide, polyurethane, silicone oil, curing agent, compound A and compound B are mixed and injection-molded and cured, and then cut into blocks. Example 6

[0082] The difference from Example 3 is that the material of the high temperature resistant layer 3 also includes 5 parts of N-(2-ethanol)-maleic anhydride, 1 part of (4-phenoxyphenoxy)acetic acid, 1 part of sodium hydroxide, 8 parts of ethanol, 3 parts of hypochlorous acid and 2 parts of 3-trimethylsilyl-2-oxazolidinone.

[0083] 3 parts of N-(2-ethanol)-maleic anhydride, (4-phenoxyphenoxy)acetic acid, 0.5 parts of sodium hydroxide and 5 parts of ethanol were mixed, and stirred at 65° C. for 1.5 hours to obtain a mixture A;

[0084] The remaining N-(2-ethanol)-maleic anhydride was mixed with hypochlorous acid, and the mixture was stirred at 28°C for 55 minutes; 3-trimethylsilyl-2-oxazolidinone, the remaining sodium hydroxide and the remaining ethanol were then added, and the mixture was stirred at 38°C for 2.5 hours to obtain a mixture B;

[0085] The materials of the high temperature resistant layer 3 , methyl vinyl silicone rubber, silicon dioxide, polyurethane, silicone oil, curing agent, compound A and compound B are mixed and injection-molded and cured, and then cut into blocks. Example 7

[0086] The difference from Example 4 is that N-(2-ethanol)-maleic anhydride is replaced by acetic anhydride. Example 8

[0087] The difference from Example 7 is that (4-phenoxyphenoxy)acetic acid is replaced by acetic acid. Example 9

[0088] The difference from Example 8 is that hypochlorous acid is not added. Example 10

[0089] The difference from Example 9 is that 3-trimethylsilyl-2-oxazolidinone is replaced by ethyl acetate. Embodiment 11

[0090] The difference from Example 4 is that the weight ratio of the plasticizer to the antioxidant is 1:2. Comparative Example

[0091] Comparative Example 1

[0092] The difference from Example 1 is that the sole material only includes the following components in parts by weight: 90 parts of nitrile rubber; 36 parts of silicon dioxide; 8 parts of barium sulfate; 15 parts of additives; 3 parts of PVC-440; the additives include a plasticizer and an antioxidant in a weight ratio of 2:1, and the plasticizer is dioctyl phthalate, and the antioxidant is antioxidant DNP.

[0093] Comparative Example 2

[0094] The difference from Example 1 is that the sole material only includes the following components in parts by weight: 90 parts of methyl vinyl silicone rubber; 40 parts of silicon dioxide; 18 parts of polyurethane; 8 parts of silicone oil; and 1 part of curing agent; the curing agent is isocyanate HT100.

[0095]

[0096] (1) High temperature resistance: A sole sample A was prepared according to Examples 1-11 and Comparative Examples 1-2. Sample A was placed in a constant temperature and humidity chamber at 120°C / 95%RH with reference to the method in “Effects of Hygrothermal Aging on Properties of High Performance Composite Materials” (Wang Xiaojie, Liang Guozheng, Zhang Wei, Xie Qunwei, Zhang Jiayi et al., Solid Rocket Technology, 2006, Issue 3, Vol. 29). After continuous treatment for 10 days, the tear strength was measured at a speed of 100 mm / min with reference to GB / T529 “Determination of tear strength of vulcanized rubber or thermoplastic rubber”. The greater the tear strength, the stronger the high temperature resistance. The test results are shown in Table 2 below.

[0097] (2) Adhesion; PU uppers were selected and bonded to the soles prepared in Examples 1-11 and Comparative Examples 1-2 according to the existing process to obtain sample B; sample B was cut into strips with a width of 2.5 cm and a length of 20 cm, and the peel strength was tested on a tensile testing machine at a speed of 100 mm / min to characterize the bonding performance. The greater the peel strength, the stronger the bonding performance. The test results are shown in Table 2 below.

[0098]

[0099] (3) Heat contact resistance: The sole sample of Example 4 was tested according to IS020344:2021, test temperature: 300°C, test time: 60 seconds; the test result was that the outsole did not melt when bent around the mold, and no cracks appeared, and the test result was qualified.

[0100] This specific implementation is merely an explanation of the present application and is not intended to limit the scope of protection of the present application. After reading this specification, those skilled in the art may make modifications to the present implementation as needed without any creative contribution, but as long as it is within the scope of the claims of the present application, it shall be protected by the patent law.

Claims

1. A high temperature resistant sole, comprising a sole body (1), characterized in that: The sole body (1) comprises a rubber layer (2) and a high temperature resistant layer (3), wherein the rubber layer (2) is located above the high temperature resistant layer (3); a connecting portion (21) is formed circumferentially on the outer side wall of the rubber layer (2), and a gap (22) is formed between the connecting portion (21) and the outer side wall of the rubber layer (2); a plurality of connecting holes (4) are provided on the rubber layer (2) and the connecting portion (21), and the high temperature resistant layer (3) is filled in the gap (22) and the connecting holes (4) and is coated on the outside of the rubber layer (2); The communicating holes (4) are respectively formed at the bottom of the rubber layer (2) and on the circumferential side wall of the connecting portion (21); and the communicating holes (4) on the connecting portion (21) are in a double-layer structure that is staggered up and down; The material of the high temperature resistant layer (3) comprises the following components in parts by weight: 90-110 parts of methyl vinyl silicone rubber; 40-60 parts of silicon dioxide; 18-22 parts of polyurethane; 8-12 parts silicone oil; 1-2 parts of curing agent; 5-6 parts of N-(2-ethanol)-maleic anhydride; 1-2 parts of (4-phenoxyphenoxy)acetic acid; 1-2 parts sodium hydroxide; 7-9 parts ethanol.

2. A high temperature resistant sole according to claim 1, characterized in that: In terms of weight, the material of the high temperature resistant layer (3) further comprises 2-3 parts of hypochlorous acid and 1-2 parts of 3-trimethylsilyl-2-oxazolidinone.

3. A high temperature resistant sole according to claim 1, characterized in that: The curing agent is isocyanate HT100.

4. A high temperature resistant sole according to claim 1, characterized in that: The rubber layer (2) comprises the following components in parts by weight: 90-110 parts of nitrile rubber; 36-40 parts of silicon dioxide; 8-12 parts of barium sulfate; 15-18 parts of additives; 3-7 parts PVC-440.

5. A high temperature resistant sole according to claim 4, characterized in that: The auxiliary agent comprises a plasticizer and an antioxidant in a weight ratio of 2:1, wherein the plasticizer is dioctyl phthalate and the antioxidant is antioxidant DNP.

6. The process for manufacturing a high temperature resistant sole according to claim 1, characterized in that: The steps include: S1. The rubber layer (2) is obtained by injection molding, and the prepared rubber layer (2) is embedded in the upper mold cover of the molded rubber mold, and the upper mold cover is formed in a shape that matches the rubber layer (2) and is embedded in the rubber layer (2); S2. The high temperature resistant layer (3) is injection molded and cured and cut into blocks, and several blocks of the high temperature resistant layer (3) are placed in the lower mold cavity of the molded rubber mold; S3. After the mold is closed, the heat treatment is performed at 140-180°C to melt the high temperature resistant layer (3) and fill the gap (22) and the connecting hole (4) and cover the outside of the rubber layer (2), thereby completing the composite of the rubber layer (2) and the high temperature resistant layer (3); S4. After processing is completed, the mold is opened and taken out to complete the production of the sole.

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