Oil-proof rubber sole material and preparation method thereof

Abstract

The present invention relates to an oil-proof and slip-resistant rubber sole material and a preparation method thereof, belonging to the technical field of shoe materials. The rubber sole material comprises the following raw materials: a base material main ingredient, a base material auxiliary material, an activator, a compatibilizer, an anti-skid and wear-resistant material, zinc oxide, stearic acid, white carbon black, an antioxidant, paraffin oil, sulfur and a vulcanizing agent; wherein the base material main ingredient comprises HNBR, IR and BIIR, the base material auxiliary material comprises AEM and POE, the activator comprises B-450 high-efficiency activator, the compatibilizer comprises POE-g-MAH, and the anti-skid and wear-resistant material comprises modified zinc oxide whisker, aluminum oxide and C5 petroleum resin. The present invention uses HNBR, IR and BIIR as main ingredients, AEM and POE as auxiliary ingredients, and selects the activator and the compatibilizer to make the rubber sole material finished product have both excellent oil resistance and tensile strength. In addition, the anti-skid and wear-resistant material added by the present invention can also make the obtained finished product have excellent anti-skid properties.

Description

Technical Field

[0001] The invention belongs to the technical field of shoe materials, and in particular relates to an oil-proof and slip-resistant rubber sole material and a preparation method thereof. Background Art

[0002] Sole materials are an important component of footwear products, and rubber materials are widely used in sole materials due to their good softness, elasticity, and shock absorption. The performance of the sole is crucial. In various work and life scenarios, problems frequently arise with ordinary rubber soles. For example, in oily and humid environments such as food processing plant workshops and kitchens, ordinary rubber soles lack good oil resistance and anti-slip properties and are easily corroded by oil. They will deform in a short period of time, which not only greatly reduces the performance of the sole, but also greatly increases the risk of the wearer slipping. In addition, even in some non-oil-stained environments, existing rubber soles are difficult to fully meet people's demand for their tensile strength. Rubber soles with high tensile strength can prevent the sole from cracking at the bend and ensure long-term use. Therefore, the development of rubber sole materials that can combine multiple properties is of great practical significance. Summary of the Invention

[0003] The purpose of the present invention is to provide an oil-resistant rubber sole material and a preparation method thereof, which solves the problem of poor oil-resistant properties in existing sole material technology.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] An oil-proof rubber sole material comprises the following raw materials: a base material, base material auxiliary materials, an activator, a compatibilizer, an anti-skid and wear-resistant material, zinc oxide, stearic acid, white carbon black, an antioxidant, paraffin oil, sulfur and a vulcanizing agent;

[0006] Among them, the main ingredients of the base material include HNBR, IR and BIIR, the auxiliary materials of the base material include AEM and POE, the activator includes B-450 high-efficiency activator, the compatibilizer includes POE-g-MAH, and the anti-slip and wear-resistant materials include modified zinc oxide whiskers, alumina and C5 petroleum resin.

[0007] As a preferred technical solution of the present invention, the antioxidant includes at least one of antioxidant 4010NA, antioxidant RD, and antioxidant 445; and the vulcanizing agent includes vulcanizing agent DCP.

[0008] As a preferred technical solution of the present invention, the HNBR is 10-13 parts by weight, the IR is 40-42 parts by weight, the BIIR is 33-35 parts by weight, the AEM is 6-8 parts by weight, the POE is 5-8 parts by weight, the activator is 6-8 parts by weight, the compatibilizer is 10-12 parts by weight, the modified zinc oxide whisker is 6-10 parts by weight, the aluminum oxide is 2-2.5 parts by weight, the petroleum resin is 5-8 parts by weight, the zinc oxide is 5-6 parts by weight, the stearic acid is 2-2.5 parts by weight, the white carbon black is 20-25 parts by weight, the antioxidant is 1.5-2 parts by weight, the paraffin oil is 10-12 parts by weight, the sulfur is 1-1.5 parts by weight, and the vulcanizing agent is 2.5-3 parts by weight.

[0009] Furthermore, the HNBR, whose product name is hydrogenated nitrile rubber, has relatively excellent mechanical properties and chemical stability, and has cyano groups on its molecular chain. Cyano groups are polar groups and have certain oil resistance. The IR, whose product name is isoprene rubber, has high tensile strength and tear strength, and its water resistance and electrical insulation properties exceed those of natural rubber. The BIIR, whose product name is brominated butyl rubber, is an isobutylene-isoprene copolymer elastomer containing active bromine. In addition to maintaining the weather resistance, ozone resistance and chemical resistance of ordinary butyl rubber, it also has the following advantages: In addition to the characteristics of high physical strength, excellent damping, low permeability and co-vulcanization performance; the AEM is a product of ternary copolymerization of ethylene, acrylate and carboxylic acid, with good aging resistance and oil resistance, as well as good elasticity, tear resistance, wear resistance and low compression permanent deformation. Compared with traditional acrylate rubber, ethylene-acrylate rubber has broadened its application range in the field of blending; the POE is a product of polyolefin elastomer, and the soft chain curling structure and structural The ethylene chains of the crystal serve as cross-linking points, which can play a connecting and buffering role between the various components, making it have both excellent toughness and good processability; the main component of the B-450 high-efficiency activator is a complex of 2-tert-butyl-p-methylresorcinol polysulfide, which has high activity, high activation efficiency, and significant energy saving and consumption reduction; the POE-g-MAH is named: maleic anhydride grafted POE, with a grafting rate of 1.2%; the modified raw material of the modified zinc oxide whisker is zinc oxide whisker, which is a four-needle zinc oxide whisker with a diameter of 0.5 -5μm, length 10-50μm, the special three-dimensional four-needle structure of the four-needle zinc oxide whisker makes it have a completely isotropic modification effect on the material, so the four-needle zinc oxide whisker can greatly improve the anti-slip performance of the material; the aluminum oxide has a particle size of 100nm, and the aluminum oxide can effectively absorb impact energy and prevent the expansion of microcracks, thereby effectively improving the toughness of the material and avoiding the occurrence of brittle fracture failure. In addition, the aluminum oxide can also effectively resist frequent external wear; the petroleum resin includes C5 petroleum resin.

[0010] A method for preparing an oil-resistant rubber sole material comprises the following steps:

[0011] S1, preparing modified zinc oxide whiskers and mixture A;

[0012] S2. Mix the mixed material A, IR, BIIR, POE, compatibilizer and C5 petroleum resin and knead them under controlled temperature. Then, add zinc oxide, stearic acid, white carbon black, antioxidant, modified zinc oxide whisker and aluminum oxide in sequence and refine them under controlled temperature. Then, add paraffin oil and sulfur in sequence and continue to refine them under controlled temperature before discharging. Finally, add vulcanizing agent and mix them evenly. Thin the sheet and cut it into the shape of the sole. Put it into a rubber shoe mold for vulcanization and then let it stand for molding to obtain the finished rubber sole material.

[0013] As a preferred technical solution of the present invention, step S1 specifically includes:

[0014] The zinc oxide whiskers are cleaned and dried, and the dried zinc oxide whiskers and a coupling agent are sequentially added to anhydrous ethanol for ultrasonic dispersion, followed by washing and drying to obtain modified zinc oxide whiskers. The activator is softened in a boiling water bath, and the softened activator, HNBR, and AEM are uniformly mixed, heated under controlled temperature, and cooled to obtain a mixture A.

[0015] Furthermore, the mass ratio of the anhydrous ethanol, the dried zinc oxide whiskers and the coupling agent is 32-35:1:11-12; the ultrasonic dispersion time is 25-30 minutes, and the washing is anhydrous ethanol washing.

[0016] Furthermore, the coupling agent includes any one of silane coupling agents KH550, KH560, and KH570.

[0017] Furthermore, the coupling agent is preferably KH550.

[0018] Furthermore, the softening time is 20-30 minutes, the temperature of the temperature-controlled heating is 98-100° C., and the time is 5-7 minutes; and the cooling is cooling to room temperature.

[0019] As a preferred technical solution of the present invention, the temperature of the temperature-controlled banburying in step S2 is 100-110°C, and the time is 3-5 minutes; the temperature of the temperature-controlled refining is 110-120°C, and the time is 2-3 minutes; the vulcanization conditions are 145-150°C, 260 seconds; and the standing time is 10-12 hours.

[0020] Beneficial effects of the present invention:

[0021] (1) The present invention uses HNBR, IR and BIIR as main materials, AEM and POE as auxiliary materials, and innovatively compounds four types of rubber and elastomers and uses them as the base materials of the system and sets a reasonable ratio. On the premise of balancing the comprehensive cost of raw materials, the advantages of each raw material can be fully utilized. HNBR provides oil resistance, IR provides tensile strength and tear strength, BIIR provides strength and damping simultaneously, AEM improves the overall performance of the compound material, and POE improves the processing performance. In this way, the raw materials in the system can complement each other's strengths and weaknesses and synergize to enhance the efficiency, so that the finished rubber sole material has both excellent oil resistance and tensile strength.

[0022] (2) Although the base materials composed of different types of rubber and elastomer can complement each other in terms of performance, the lack of compatibility between the base materials will make the final performance of the finished product fail to achieve the expected effect. Therefore, in order to solve this problem, the present invention uses an activator to increase the activity of the HNBR and AEM surfaces, thereby enhancing their compatibility with the polar part of the compatibilizer. At the same time, the other part of the compatibilizer can enhance the binding force of the remaining base materials to a certain extent. Therefore, the finished product obtained by the blending has good compatibility and can further improve the oil resistance and tensile strength of the system.

[0023] In addition, the present invention adds the activator before the compatibilizer, which can make the compatibilizer play a more effective role. The two complement each other and are indispensable, which has a positive effect on improving the performance of the finished product.

[0024] (3) The present invention uses modified zinc oxide whiskers, aluminum oxide and C5 petroleum resin as the anti-skid and wear-resistant materials of the system, wherein the modified zinc oxide whiskers provide anti-skid performance, the aluminum oxide resists external wear, and the C5 petroleum resin increases the friction between the chain segments and fillers in the system and enhances the hysteresis friction; thus, the finished product obtained thereby has excellent anti-skid and wear-resistant properties.

[0025] (4) The present invention innovatively constructs a set of base materials and takes into account the ratio and compatibility of the raw materials between the base materials. At the same time, anti-skid and wear-resistant materials are added. The finished product obtained thereby can have both high tensile strength and oil-resistant performance. Using this raw material as a sole material can effectively increase the oil-resistant effect of the sole and improve the safety of the shoes when worn. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] The HNBR used in the Examples, Comparative Examples, and Test Examples of the present invention is a hydrogenated nitrile rubber (brand name: 2057, brand: LANXESS) purchased from Shanghai Huaxiang Polymer Materials Co., Ltd.

[0028] The IR used, product name: isoprene rubber, brand: IR80, brand: Xinjiang Tianli, was purchased from Guangzhou Housheng New Materials Co., Ltd.

[0029] The BIIR used was chlorobutyl rubber, brand name: X-Butyl BIIR BBX2, brand: Alanxinke, purchased from Dongguan Caihua Plastic Technology Co., Ltd.

[0030] The AEM used was ethylene acrylate rubber, brand S270762, DuPont, USA, purchased from Shanghai Xingyun International Trading Co., Ltd.

[0031] The POE used, product name: polyolefin elastomer, brand: ENGAGE 8450, brand: Dow, was purchased from Suzhou Shunwangjia International Trading Co., Ltd.

[0032] The B-450 high-efficiency activator used, brand: 450, was purchased from Anhui Jinma Rubber Additive Co., Ltd. The main component of the B-450 high-efficiency activator is a complex of 2-tert-butyl-p-methylresorcinol polysulfide, which has high activity, high activation efficiency, and significant energy saving and consumption reduction;

[0033] The POE-g-MAH used, product name: maleic anhydride grafted POE, grafting rate 1.2%, brand: Dow, was purchased from Dongguan Jingke Polymer Co., Ltd.

[0034] The zinc oxide whiskers used were tetrapod-shaped zinc oxide whiskers with a diameter of 0.5-5 μm and a length of 10-50 μm, with the designation FF-JY510 and the brand name Jiayou, purchased from Xuancheng Jingrui New Materials Co., Ltd.

[0035] The aluminum oxide used had a particle size of 100 nm and a brand name of VK-L100 and was purchased from Xuancheng Jingrui New Materials Co., Ltd.

[0036] The petroleum resins used included C5 petroleum resin, which was purchased from Jinan Xinquan Chemical Technology Co., Ltd.;

[0037] The zinc oxide, stearic acid, white carbon black, antioxidant, paraffin oil, sulfur and vulcanizing agent used are all commonly used raw materials in this field and are commercially available;

[0038] The above is not repeated here.

[0039] Example 1

[0040] An oil-resistant rubber sole material comprises the following raw materials in parts by weight: 10 parts by weight of HNBR, 40 parts by weight of IR, 34 parts by weight of BIIR, 8 parts by weight of AEM, 8 parts by weight of POE, 6 parts by weight of B-450 high-efficiency activator, 10 parts by weight of POE-g-MAH, 6 parts by weight of modified zinc oxide whisker, 2 parts by weight of aluminum oxide, 8 parts by weight of C5 petroleum resin, 6 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 20 parts by weight of white carbon black, 2 parts by weight of antioxidant RD, 11 parts by weight of paraffin oil, 1 part by weight of sulfur, and 2.5 parts by weight of vulcanizing agent DCP.

[0041] The method for preparing the oil-resistant rubber sole material comprises the following steps:

[0042] S1. Clean and dry the zinc oxide whiskers, add the dried zinc oxide whiskers and silane coupling agent KH550 to anhydrous ethanol in sequence, and ultrasonically disperse for 25 minutes. Wash with anhydrous ethanol and dry to obtain modified zinc oxide whiskers. Soften B-450 high-efficiency activator in a boiling water bath for 30 minutes, mix the softened activator, HNBR, and AEM, and heat at 98°C for 6 minutes. Cool to room temperature to obtain mixture A.

[0043] The mass ratio of the anhydrous ethanol, the dried zinc oxide whiskers and the silane coupling agent KH550 is 32:1:11.5;

[0044] S2. Mix the mixed material A, IR, BIIR, POE, POE-g-MAH and C5 petroleum resin and knead them at a controlled temperature of 100°C for 4 min. Then, zinc oxide, stearic acid, white carbon black, antioxidant RD, modified zinc oxide whisker and aluminum oxide are added in sequence and refined at a controlled temperature of 110°C for 3 min. Then, paraffin oil and sulfur are added in sequence and refined at a controlled temperature of 110°C for 2.5 min before discharging. Finally, vulcanizing agent DCP is added and mixed evenly. The sheet is thinly sliced ​​and cut into the shape of a sole. The sheet is placed in a rubber shoe mold and vulcanized at 150°C for 260 s, and then allowed to stand for 10 h to form, thereby obtaining a finished rubber sole material.

[0045] Example 2

[0046] An oil-resistant rubber sole material comprises the following raw materials in parts by weight: 13 parts by weight of HNBR, 41 parts by weight of IR, 33 parts by weight of BIIR, 6 parts by weight of AEM, 5 parts by weight of POE, 8 parts by weight of B-450 high-efficiency activator, 12 parts by weight of POE-g-MAH, 8 parts by weight of modified zinc oxide whisker, 2.5 parts by weight of aluminum oxide, 5 parts by weight of C5 petroleum resin, 5.5 parts by weight of zinc oxide, 2.2 parts by weight of stearic acid, 22.5 parts by weight of white carbon black, 1.5 parts by weight of antioxidant 4010NA, 10 parts by weight of paraffin oil, 1.5 parts by weight of sulfur, and 3 parts by weight of vulcanizing agent DCP.

[0047] The method for preparing the oil-resistant rubber sole material comprises the following steps:

[0048] S1. Clean and dry the zinc oxide whiskers, add the dried zinc oxide whiskers and silane coupling agent KH550 to anhydrous ethanol in sequence, and ultrasonically disperse for 27.5 minutes. Wash with anhydrous ethanol and dry to obtain modified zinc oxide whiskers. Soften B-450 high-efficiency activator in a boiling water bath for 20 minutes, mix the softened activator, HNBR, and AEM, and heat at 100° C. for 5 minutes. Cool to room temperature to obtain mixture A.

[0049] The mass ratio of the anhydrous ethanol, the dried zinc oxide whiskers and the silane coupling agent KH550 is 33.5:1:12;

[0050] S2. Mix the mixed material A, IR, BIIR, POE, POE-g-MAH and C5 petroleum resin and knead them at a controlled temperature of 105°C for 3 min. Then, zinc oxide, stearic acid, white carbon black, antioxidant 4010NA, modified zinc oxide whisker and aluminum oxide are added in sequence and the temperature is controlled at 115°C for refining for 2 min. Then, paraffin oil and sulfur are added in sequence and the temperature is continued to be controlled at 115°C for refining for 3 min before discharging. Finally, vulcanizing agent DCP is added and the mixture is evenly mixed. The sheet is thinly cut and cut into the shape of a sole. The sheet is placed in a rubber shoe mold and vulcanized at 145°C for 260s and then allowed to stand for 12 hours to form, thereby obtaining a finished rubber sole material.

[0051] Example 3

[0052] An oil-resistant rubber sole material comprises the following raw materials in parts by weight: 11.5 parts by weight of HNBR, 42 parts by weight of IR, 35 parts by weight of BIIR, 7 parts by weight of AEM, 6.5 parts by weight of POE, 7 parts by weight of B-450 high-efficiency activator, 11 parts by weight of POE-g-MAH, 10 parts by weight of modified zinc oxide whisker, 2.2 parts by weight of aluminum oxide, 6.5 parts by weight of C5 petroleum resin, 5 parts by weight of zinc oxide, 2.5 parts by weight of stearic acid, 25 parts by weight of white carbon black, 1.8 parts by weight of antioxidant 445, 12 parts by weight of paraffin oil, 1.3 parts by weight of sulfur, and 2.7 parts by weight of a vulcanizing agent DCP.

[0053] The method for preparing the oil-resistant rubber sole material comprises the following steps:

[0054] S1. Clean and dry the zinc oxide whiskers, add the dried zinc oxide whiskers and silane coupling agent KH550 to anhydrous ethanol in sequence, and ultrasonically disperse for 30 minutes. Wash with anhydrous ethanol, and dry to obtain modified zinc oxide whiskers. Soften B-450 high-efficiency activator in a boiling water bath for 25 minutes, mix the softened activator, HNBR, and AEM, and heat at 99° C. for 7 minutes. Cool to room temperature to obtain mixture A.

[0055] The mass ratio of the anhydrous ethanol, the dried zinc oxide whiskers and the silane coupling agent KH550 is 35:1:11;

[0056] S2. Mix the mixed material A, IR, BIIR, POE, POE-g-MAH and C5 petroleum resin and knead them at a controlled temperature of 110°C for 5 min. Then, zinc oxide, stearic acid, white carbon black, antioxidant 445, modified zinc oxide whisker and aluminum oxide are added in sequence and the temperature is controlled at 120°C for refining for 2.5 min. Then, paraffin oil and sulfur are added in sequence and the temperature is continued to be controlled at 120°C for refining for 2 min before discharging. Finally, vulcanizing agent DCP is added and the mixture is evenly mixed. The sheet is thinly cut and cut into the shape of a sole. The sheet is placed in a rubber shoe mold and vulcanized at 150°C for 260s, and then allowed to stand for 11 hours to form, thereby obtaining a finished rubber sole material.

[0057] Comparative Example 1

[0058] Compared with Example 1, the difference is that no HNBR is added in Comparative Example 1, that is, 0 weight parts of HNBR, 42.5 weight parts of IR, 36.5 weight parts of BIIR, 10.5 weight parts of AEM, and 10.5 weight parts of POE, and the other operating steps and parameters remain unchanged.

[0059] Comparative Example 2

[0060] Compared with Example 1, the difference is that no IR is added in Comparative Example 2, that is, 0 weight parts of IR, 20 weight parts of HNBR, 44 weight parts of BIIR, 18 weight parts of AEM, and 18 weight parts of POE, and the other operating steps and parameters remain unchanged.

[0061] Comparative Example 3

[0062] Compared with Example 1, the difference is that no BIIR is added in Comparative Example 3, that is, 0 weight parts of BIIR, 18.5 weight parts of HNBR, 48.5 weight parts of IR, 16.5 weight parts of AEM, and 16.5 weight parts of POE, and the other operating steps and parameters remain unchanged.

[0063] Comparative Example 4

[0064] Compared with Example 1, the difference is that AEM is not added in Comparative Example 4, that is, 0 parts by weight of AEM, 12 parts by weight of HNBR, 42 parts by weight of IR, 36 parts by weight of BIIR, and 10 parts by weight of POE, and the other operating steps and parameters remain unchanged.

[0065] Comparative Example 5

[0066] Compared with Example 1, the difference is that no POE is added in Comparative Example 5, that is, 0 weight parts of POE, 12 weight parts of HNBR, 42 weight parts of IR, 36 weight parts of BIIR, and 10 weight parts of AEM, and the other operating steps and parameters remain unchanged.

[0067] Comparative Example 6

[0068] Compared with Example 1, the difference is that in Comparative Example 6, B-450 high-efficiency activator is not added, and the other operating steps and parameters remain unchanged.

[0069] Comparative Example 7

[0070] Compared with Example 1, the difference is that POE-g-MAH is not added in Comparative Example 7, and the other operating steps and parameters remain unchanged.

[0071] Comparative Example 8

[0072] Compared with Example 1, the difference is that in Comparative Example 8, B-450 high-efficiency activation is not pre-mixed with HNBR and AEM, and the specific preparation steps are as follows:

[0073] S1. Clean and dry the zinc oxide whiskers, add the dried zinc oxide whiskers and silane coupling agent KH550 to anhydrous ethanol in sequence, and ultrasonically disperse for 25 minutes. Wash with anhydrous ethanol, and dry to obtain modified zinc oxide whiskers. Soften B-450 high-efficiency activator in a boiling water bath for 30 minutes, cool to room temperature, and obtain a softened activator. The mass ratio of anhydrous ethanol, dried zinc oxide whiskers, and silane coupling agent KH550 is 32:1:11.5.

[0074] S2. HNBR, AEM, IR, BIIR, POE, POE-g-MAH and C5 petroleum resin are mixed uniformly and kneaded at a temperature of 100° C. for 4 min. Activator, zinc oxide, stearic acid, white carbon black, antioxidant RD, modified zinc oxide whisker and alumina are added in sequence and the mixture is refined at a temperature of 110° C. for 3 min. Paraffin oil and sulfur are added in sequence and the mixture is refined at a temperature of 110° C. for 2.5 min before discharging. Finally, vulcanizing agent DCP is added and the mixture is mixed uniformly. The mixture is thinly sliced ​​and vulcanized on a flat vulcanizing press at 150° C. and 10 MPa for 260 s. The mixture is allowed to stand for 10 h after vulcanization and then cut to obtain a finished rubber sole material.

[0075] The remaining operation steps and parameters remain unchanged.

[0076] Test Example 1

[0077] (1) Oil resistance: According to ISO 20345-2011, the rubber sole materials prepared in Examples 1-3 and Comparative Examples 1-8 were tested for oil resistance. The results are shown in Table 1.

[0078] (2) Tensile strength: According to GB / T528-2009, the rubber sole materials prepared in Examples 1-3 and Comparative Examples 1-8 were subjected to tensile strength tests using an electronic universal testing machine at a test speed of 500 mm / min. The results are shown in Table 1.

[0079] Table 1

[0080] Oil resistance (%) Tensile strength (MPa) Example 1 8.7 22.92 Example 2 8.6 21.56 Example 3 8.6 22.13 Comparative Example 1 6.7 15.26 Comparative Example 2 6.9 13.69 Comparative Example 3 6.3 14.55 Comparative Example 4 7.5 16.61 Comparative Example 5 7.2 15.93 Comparative Example 6 6.8 14.22 Comparative Example 7 7.1 14.90 Comparative Example 8 7.4 15.84

[0081] It can be seen from Table 1 that the rubber sole material product prepared by the present invention has both excellent oil resistance and tensile strength.

[0082] Comparative Example 9

[0083] Compared with Example 1, the difference is that in Comparative Example 9, modified zinc oxide whiskers are not added, and half the weight of the modified zinc oxide whiskers are replaced by aluminum oxide and C5 petroleum resin, respectively, and the other operating steps and parameters remain unchanged.

[0084] Comparative Example 10

[0085] Compared with Example 1, the difference is that in Comparative Example 10, no alumina is added, and modified zinc oxide whiskers and C5 petroleum resin with half the weight of alumina are used instead, and the other operating steps and parameters remain unchanged.

[0086] Comparative Example 11

[0087] Compared with Example 1, the difference is that in Comparative Example 11, no C5 petroleum resin is added, and modified zinc oxide whiskers and aluminum oxide are used in half the weight of the C5 petroleum resin, respectively, and the other operating steps and parameters remain unchanged.

[0088] Test Example 2

[0089] Friction coefficient: According to 5.3.5.3 test in BS EN ISO 20345: 2011 (90% glycerol aqueous solution was added to a steel plate), the friction coefficient of the rubber sole materials prepared in Examples 1-3 and Comparative Examples 9-11 was tested. The results are shown in Table 2.

[0090] Table 2

[0091] Friction coefficient (heel) Coefficient of friction (smooth) Example 1 0.47 0.51 Example 2 0.46 0.50 Example 3 0.46 0.51 Comparative Example 9 0.31 0.36 Comparative Example 10 0.34 0.38 Comparative Example 11 0.27 0.31

[0092] It can be seen from Table 2 that the rubber sole material product prepared by the present invention has a large friction coefficient and excellent anti-slip property.

[0093] Throughout the specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0094] The above content is merely an example and explanation of the concept of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

Claims

1. An oil-resistant rubber sole material, characterized in that: Including the following raw materials: base material main material, base material auxiliary material, activator, compatibilizer, anti-slip and wear-resistant material, zinc oxide, stearic acid, white carbon black, antioxidant, paraffin oil, sulfur and vulcanizing agent; The main ingredients of the base material include HNBR, IR and BIIR, the auxiliary ingredients of the base material include AEM and POE, the activator includes B-450 high-efficiency activator, the compatibilizer includes POE-g-MAH, and the anti-slip and wear-resistant materials include modified zinc oxide whiskers, aluminum oxide and C5 petroleum resin; The HNBR is 10-13 parts by weight, the IR is 40-42 parts by weight, the BIIR is 33-35 parts by weight, the AEM is 6-8 parts by weight, the POE is 5-8 parts by weight, the activator is 6-8 parts by weight, the compatibilizer is 10-12 parts by weight, the modified zinc oxide whisker is 6-10 parts by weight, the aluminum oxide is 2-2.5 parts by weight, the petroleum resin is 5-8 parts by weight, the zinc oxide is 5-6 parts by weight, the stearic acid is 2-2.5 parts by weight, the white carbon black is 20-25 parts by weight, the antioxidant is 1.5-2 parts by weight, the paraffin oil is 10-12 parts by weight, the sulfur is 1-1.5 parts by weight, and the vulcanizing agent is 2.5-3 parts by weight; The antioxidant includes at least one of antioxidant 4010NA, antioxidant RD, and antioxidant 445; the vulcanizing agent includes vulcanizing agent DCP; The method for preparing the oil-resistant rubber sole material comprises the following steps: S1. Clean and dry the zinc oxide whiskers, add the dried zinc oxide whiskers and a coupling agent to anhydrous ethanol in sequence, perform ultrasonic dispersion, wash, and dry to obtain modified zinc oxide whiskers; soften the activator in a boiling water bath, uniformly mix the softened activator, HNBR, and AEM, heat under controlled temperature, and cool to obtain a mixture A; S2. Mix the mixed material A, IR, BIIR, POE, compatibilizer and C5 petroleum resin and knead them under controlled temperature. Then, add zinc oxide, stearic acid, white carbon black, antioxidant, modified zinc oxide whisker and aluminum oxide in sequence and refine them under controlled temperature. Then, add paraffin oil and sulfur in sequence and continue to refine them under controlled temperature before discharging. Finally, add vulcanizing agent and mix them evenly. Thin the sheet and cut it into the shape of the sole. Put it into a rubber shoe mold for vulcanization and then let it stand for molding to obtain the finished rubber sole material.

2. The oil-resistant rubber sole material according to claim 1, characterized in that: The mass ratio of the anhydrous ethanol, the dried zinc oxide whiskers and the coupling agent is 32-35:1:11-12.

3. The oil-resistant rubber sole material according to claim 1, characterized in that: The coupling agent includes any one of silane coupling agents KH550, KH560, and KH570.

4. The oil-resistant rubber sole material according to claim 1, characterized in that: The softening time is 20-30 minutes, the temperature of the temperature-controlled heating is 98-100° C., and the time is 5-7 minutes; and the cooling is cooling to room temperature.

5. The oil-resistant rubber sole material according to claim 1, characterized in that: The temperature of the temperature-controlled banburying in step S2 is 100-110°C, and the time is 3-5 minutes; the temperature of the temperature-controlled refining is 110-120°C, and the time is 2-3 minutes.

6. The oil-resistant rubber sole material according to claim 1, characterized in that: The vulcanization conditions in step S2 are 145-150° C. and 260 seconds; and the standing time is 10-12 hours.