CN113372624B

CN113372624B - Light wear-resistant rubber foamed sole, preparation method thereof and sports shoes

Info

Publication number: CN113372624B
Application number: CN202110668006.6A
Authority: CN
Inventors: 杨敬平
Original assignee: Fujian Joyyou Sports Goods Co ltd
Current assignee: Fujian Joyyou Sports Goods Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2023-04-07
Anticipated expiration: 2041-06-16
Also published as: CN113372624A

Abstract

The application relates to the technical field of sole rubber production, and particularly discloses a light wear-resistant rubber foamed sole, a preparation method of the light wear-resistant rubber foamed sole and sports shoes. The light wear-resistant rubber foamed sole comprises the following raw materials in parts by weight: natural rubber, styrene-butadiene rubber, azodicarbonamide, sulfur, didodecyl thiodipropionate, biomass functional filler, hydroxy acrylic resin, a wear-resisting agent, zinc oxide and stearic acid; the preparation method of the light wear-resistant rubber foamed sole comprises the following steps: (1) Plasticating rubber in the raw materials to obtain plasticated masterbatch; (2) Adding the rest raw materials except the wear-resisting agent into the plasticated master batch, and blending and banburying to obtain a rubber compound; (3) treating the anti-wear agent; (4) And (3) rolling off the rubber compound to obtain a rubber sheet, adhering the treated wear-resisting agent to the rubber sheet, and performing qualitative and vulcanization treatment to obtain the rubber. The light wear-resistant rubber foaming sole of this application wear resistance is preferred.

Description

Light wear-resistant rubber foamed sole, preparation method thereof and sports shoes

Technical Field

The application relates to the technical field of sole rubber production, in particular to a light wear-resistant rubber foaming sole and a preparation method thereof, and sports shoes.

Background

The rubber is a basic raw material in the rubber industry, can be quickly recovered as an elastomer, and has good physical and mechanical properties and chemical stability; is widely applied to the fields of tires, soles, floor materials, rubber tubes, cables and the like; however, rubber has the defects of easy abrasion, easy aging, poor mechanical property and the like in application.

Sports shoes are necessary daily necessities in daily life. At present, the sole of the sports shoe is usually made of rubber materials, and in order to enhance the wear resistance of the sports shoe in daily life, the solid rubber sole is usually adopted. Although the common solid rubber sole is higher in wear resistance, the sole of the type is heavier in weight and inconvenient to wear, and is not suitable for being used as a sports sole.

The Chinese patent with application publication number CN103937047A discloses a light micro-foaming wear-resistant rubber for soles and a preparation method thereof, wherein the rubber is prepared from the following raw materials in parts by weight: 30-40 parts of natural rubber, 60-70 parts of synthetic rubber, 15-20 parts of white smoke, 10-15 parts of foaming master batch, 8-12 parts of zinc oxide, 10-15 parts of ethylene-vinyl acetate copolymer and light resin, 1.5-2.5 parts of sulfur, 4-5 parts of active agent, 2.5-5 parts of foaming agent, 1.8-2.5 parts of accelerator, 1.0-1.5 parts of stearic acid, 0.3-0.8 part of antifogging agent, 1.0-1.5 parts of didodecyl thiodipropionate and 1.0-1.5 parts of wear-resisting agent. The sole rubber has a small specific gravity relative to water, can float on the water surface, and has the characteristics of portability and comfort.

In view of the above-mentioned related technologies, the inventor believes that the wear-resistant effect is not good when only the wear-resistant agent is added to enhance the wear-resistant performance of the rubber sole.

Disclosure of Invention

In order to improve the wear resistance of the rubber foamed sole, the application provides a light wear-resistant rubber foamed sole, a preparation method thereof and sports shoes.

First aspect, the application provides a wear-resisting rubber foaming sole of light adopts following technical scheme:

a light wear-resistant rubber foaming sole comprises the following raw materials in parts by weight: 60-70 parts of natural rubber, 30-40 parts of styrene-butadiene rubber, 30-40 parts of butadiene rubber, 1-2 parts of azodicarbonamide, 2-3 parts of sulfur, 0.5-1 part of didodecyl thiodipropionate, 2-3 parts of a biomass functional filler, 10-15 parts of hydroxy acrylic resin, 5-10 parts of a wear-resisting agent, 3-5 parts of zinc oxide and 1.5-3 parts of stearic acid, wherein the biomass functional filler is at least two of sodium lignosulfonate, oxidized starch and regenerated chitin, the wear-resisting agent is at least two of alloy particles, transition metal carbide and silicon nitride, the alloy particles are at least two of tungsten-cobalt alloy, cobalt-coated tungsten carbide alloy and high-silicon aluminum alloy, and the transition metal carbide is at least two of titanium carbide, molybdenum carbide and vanadium carbide.

By adopting the technical scheme, the anti-aging property and the tensile strength of the rubber are increased by adding the carbon black into the rubber generally, but the carbon black has carcinogenicity and is large in damage to human bodies, therefore, the biomass functional filler is adopted to replace the carbon black, the biomass functional filler is wide in source and environment-friendly, a large number of functional groups such as carbon-carbon double bonds can be introduced into sodium lignosulfonate, chemical linkage can be established between the lignosulfonate and the rubber easily, the interface combination degree of the rubber can be enhanced, the mechanical strength of the rubber is enhanced, the addition of alloy particles enables the rubber to slide on the surfaces of the alloy particles under the action of stress, the stress of the material is redistributed, stress concentration is avoided, the capability of the rubber in resisting external friction is improved, the wear resistance of the rubber is further improved, meanwhile, the mechanical property of the rubber can be improved by using the transition metal carbide material, and the wear resistance of the rubber is further improved.

Preferably, the wear-resisting agent consists of alloy particles, transition metal carbide and silicon nitride according to the mass ratio of (6-10) to (7-11) to (3-5).

Through adopting above-mentioned technical scheme, optimize the proportion of three kinds of wear-resisting agent respectively, transition metal carbide, the wearability of alloy particle reinforcing sole from the different directions, the stress that the rubber receives can be dispersed in the addition of alloy particle, thereby improve the wearability of rubber, the addition of transition metal carbide can be on the basis of the stress that the dispersed rubber receives, improve the bonding strength at base member and interface, thereby further improve the wearability of rubber, the addition of silicon nitride can strengthen the alloy particle, the combined action of transition metal carbide to rubber, because silicon nitride plays an auxiliary effect, consequently, the addition of silicon nitride is less than alloy particle, the addition of transition metal carbide.

Preferably, the alloy particles consist of tungsten-cobalt alloy, cobalt-coated tungsten carbide alloy and high-silicon aluminum alloy according to the mass ratio of (3-4) to (4-5).

By adopting the technical scheme, the proportion of the three alloy particles is optimized respectively, so that the improvement of the abrasion resistance of the alloy particles to rubber is better, the compressive strength and the elastic modulus of the tungsten-cobalt alloy are higher, the impact toughness is better, the cobalt-coated cobalt carbide alloy can enhance the abrasion resistance of the rubber, and meanwhile, the toughness and the plasticity of the rubber are enhanced, so that the rubber has excellent impact resistance, the abrasion resistance of the prepared rubber sole is better, the abrasion resistance of the rubber sole can be enhanced by adding the high-silicon aluminum alloy, the density of the sole is reduced, the quality of the sole is lighter, the cost of the cobalt-coated tungsten carbide alloy and the high-silicon aluminum alloy is relatively lower than that of the tungsten-cobalt alloy on the premise of improving the abrasion resistance of the rubber, and the amount of the cobalt-coated tungsten carbide alloy and the high-silicon aluminum alloy is more than that of the tungsten-cobalt alloy in order to save the cost.

Preferably, the transition metal carbide consists of titanium carbide, molybdenum carbide and vanadium carbide according to the mass ratio of (2-3) to (3-6) to (4-7).

Through adopting above-mentioned technical scheme, carry out the preferred to three kinds of compositions of transition metal carbide respectively to make the transition metal carbide influence better to the wearability of sole, the transition metal carbide has the high mechanical strength similar with graphite alkene, can alleviate the reunion phenomenon between the living beings function filler particle simultaneously, improves the compatibility of rubber substrate and living beings function filler, and then strengthens living beings function filler and rubber interface bonding's intensity, thereby improves the wearability of rubber substrate.

Preferably, the transition metal carbide is obtained by adding a silane coupling agent and water, then adding an organic tin catalyst and reacting.

By adopting the technical scheme, the transition metal carbide has the defects of poor compatibility and easy agglomeration in rubber, so that the transition metal carbide needs to be treated, the hydroxyl group of the silane coupling agent can react with the hydroxyl group of the transition metal carbide, the hydrogen bond effect among the fillers can be improved, the agglomeration phenomenon among filler particles is reduced, the compatibility of the fillers and a rubber matrix is improved, and the dispersion of the fillers in the rubber matrix is promoted.

Preferably, the mass ratio of the natural rubber to the butadiene rubber to the styrene-butadiene rubber is (2-13) to (1-7).

By adopting the technical scheme, the natural rubber, the butadiene rubber and the styrene butadiene rubber are mixed for use, the oxidation resistance, the ageing resistance and the wear resistance of the sole can be enhanced, the using amount of the natural rubber is larger than the adding amount of the butadiene rubber and the styrene butadiene rubber, both the natural rubber and the styrene butadiene rubber are unsaturated carbon chain nonpolar rubber, the blending is easier, the wear resistance and the ageing resistance of the natural rubber can be improved by adding the styrene butadiene rubber, the cost is reduced, and meanwhile, the processing viscosity of the natural rubber and the styrene butadiene rubber can be increased by adding the butadiene rubber, so that the wear resistance of the sole is further increased.

Preferably, the biomass functional filler consists of sodium lignosulphonate, oxidized starch and regenerated chitin according to the mass ratio of (2-3) to (3-5) to (4-6).

Through adopting above-mentioned technical scheme, contain the active group that benzene ring, phenolic hydroxyl etc. and rubber combine in the sodium lignosulfonate structure, can reduce the cost of sole, improve the ageing resistance of sole, can also reduce the vulcanization rate of rubber simultaneously, make the processing of rubber safer, oxidized starch adds can reduce the overall cost of sole in the rubber, and simultaneously, oxidized starch reduces easily, with natural rubber's compatibility poor, the addition of regeneration chitin can improve oxidized starch and natural rubber's compatibility, thereby further improve the wearability of sole.

Preferably, the raw material also comprises 2-3 parts by weight of a wrapping agent, wherein the wrapping agent is at least two of glyceryl monostearate, solid paraffin and cetyl alcohol.

Through adopting above-mentioned technical scheme, the influence that the wrapping agent's addition can reduce rubber and receive moisture, reduce the appearance of the condition of moulding, the wrapping agent wraps up on rubber with the form of molecular film, the wrapping agent has hydrophobicity, consequently, can reduce the condition that rubber absorbs water in humid environment, and then improve the waterproof nature of rubber, glyceryl monostearate, contain polar group in the hexadecanol, consequently, can increase the polar group on the rubber, make the contact angle tend to a plateau value, solid paraffin does not have polar group, can make the contact angle increase simultaneously, thereby make the moisture absorption speed reduce, water-proof effects is preferred.

In a second aspect, the application provides a preparation method of a light wear-resistant rubber foaming sole, which adopts the following technical scheme:

a preparation method of a light wear-resistant rubber foaming sole comprises the following steps:

(1) Plasticating natural rubber, styrene butadiene rubber and butadiene rubber to obtain plasticated masterbatch;

(2) Adding azodicarbonamide, sulfur, didodecyl thiodipropionate, biomass functional filler, hydroxy acrylic resin, zinc oxide and stearic acid into the plasticated master batch, uniformly mixing, and blending and banburying to obtain a rubber compound;

(3) Uniformly mixing all components in the wear-resisting agent, and then adding polyisocyanate adhesive for treatment;

(4) And (3) carrying out open milling and sheet discharging on the rubber compound in the step (2) to obtain a rubber sheet, placing the wear-resistant agent treated in the step (3) on the rubber sheet, then placing the rubber sheet in a sole type mold for shaping, and carrying out vulcanization treatment to obtain the wear-resistant rubber sole.

By adopting the technical scheme, the wear-resistant agent is treated, and due to the fact that the particle size of the composition particles of the wear-resistant agent is small, all components of the wear-resistant agent are bonded by adding the polyisocyanate adhesive, and then the treated wear-resistant agent is bonded with the rubber sheet, so that the wear resistance of the rubber sole is enhanced.

In a third aspect, the application provides a sports shoe with a light and wear-resistant rubber foamed sole, which adopts the following technical scheme:

a sports shoe with a light wear-resistant rubber foaming sole.

By adopting the technical scheme, the wear-resistant agent is added into the raw materials of the sole and is obtained by compounding multiple components, so that the wear resistance and the tensile property of the sole are improved, and the wear resistance of the sports shoe can be improved.

In summary, the present application has the following beneficial effects:

1. the utility model provides a wear-resisting rubber foaming sole of light adds wear-resisting agent in the raw materials, wear-resisting agent comprises two kinds at least in alloy particle, transition metal carbide, the silicon nitride, the wearability of alloy particle, transition metal carbide homoenergetic follow equidirectional reinforcing rubber sole, the silicon nitride is as wear-resisting reinforcing agent, can further increase the effect of alloy particle, transition metal carbide to rubber to make the rubber sole wear resistance who makes better.

2. The utility model provides a light wear resistant rubber foaming sole packs through using the living beings function, and the function that the living beings function packed is similar with the carbon black, but the carbon black is harmful to the health, uses the living beings function to pack replacement carbon black, on the basis of guaranteeing rubber wearability, reduces the injury to the human body.

Detailed Description

The present application will be described in further detail with reference to examples.

The transition metal carbide in the wear-resisting agent in the raw materials of the light wear-resisting rubber foaming sole is the treated transition metal carbide.

The transition metal carbide treatment method comprises the following steps:

s1, mixing transition metal carbide, a silane coupling agent and water, then adding an organic tin catalyst, and stirring at a constant temperature of 60 ℃ and a high speed of 300rpm for 6 hours to obtain a reaction product;

s2, drying the reaction product obtained in the step S1 at 60 ℃ for 10 hours in vacuum to obtain the treated transition metal carbide.

Preferably, the silane coupling agent is added in an amount of 80% of the transition metal carbide, the water is added in an amount of 50 times the transition metal carbide, and the organotin catalyst is added in an amount of 5% of the transition metal carbide, and preferably, the organotin catalyst is dibutyltin dilaurate in step S1.

The preparation method of the light wear-resistant rubber foamed sole comprises the following steps:

(1) According to the formula, adding natural rubber, styrene butadiene rubber and butadiene rubber into an open mill for plastication for 15-20min, and setting the temperature to be 50-60 ℃ to obtain plasticated masterbatch;

(2) Adding the rest raw materials into the plasticated masterbatch according to the formula, uniformly mixing, and carrying out blending and banburying in an internal mixer at the temperature of 60-65 ℃ and the rpm of 45-55 for 10-15min to obtain a rubber compound;

(3) Respectively cleaning the alloy particles, the transition metal nitride and the silicon nitride by acetone, uniformly mixing the cleaned alloy particles, the transition metal nitride and the silicon nitride, and bonding by polyisocyanate adhesive to obtain the treated wear-resisting agent;

(4) Carrying out open milling on the mixed rubber obtained in the step (2) in an open mill to obtain a lower rubber sheet, wherein the temperature is 55-60 ℃, the thickness of the lower rubber sheet is 7-8mm, and the cutting width is 70-90mm, so as to obtain a rubber sheet, bonding the wear-resistant agent treated in the step (3) on the rubber sheet, then placing the rubber sheet in a sole type mold for shaping, and carrying out vulcanization treatment in a vulcanizing machine, wherein the vulcanization temperature is 100-200 ℃, the vulcanization pressure is 5-30MPa, and the vulcanization time is 1-20min; and (5) performing post-treatment operations such as trimming, edging and painting to obtain the product.

Wherein the plastication time in the step (1) is 18min, and the plastication temperature is 55 ℃;

wherein, the temperature of the internal mixer in the step (2) is 63 ℃, the internal mixing speed is 50rpm, and the internal mixing time is 12min;

wherein the vulcanization temperature in the step (3) is 150 ℃, the vulcanization pressure is 20Mpa, and the vulcanization time is 15min;

wherein the mass ratio of the rubber sheet to the treated wear-resistant agent is 12.

Preferably, cetyl alcohol is n-cetyl alcohol.

Preferably, the organotin catalyst is dibutyltin dilaurate, which has a CAS number of 77-58-7.

Preferably, the silicon content in the high-silicon aluminum alloy is 27-70%, and the balance is aluminum, and preferably, the silicon content in the high-silicon aluminum alloy is 70%, and the particle size of the high-silicon aluminum alloy is 10-100mm.

Preferably, the average particle size of the cobalt-coated tungsten carbide alloy is 300 meshes, and the mass fraction of cobalt is 70%.

Preferably, the particle size of the tungsten-cobalt alloy is 10-325 meshes, and preferably, the average particle size of the tungsten-cobalt alloy is 100 meshes, wherein the mass fraction of tungsten is 86-89%, and the mass fraction of cobalt is 6-8%.

Preferably, the vanadium carbide is superfine vanadium carbide powder, the particle size of the vanadium carbide is 500nm-2um, preferably, the average particle size of the vanadium carbide is 800nm, and the carbonization rate reaches 99%.

Preferably, the molybdenum carbide is ultrafine molybdenum powder, the particle size of the molybdenum carbide is 300-500 meshes, preferably, the average particle size of the molybdenum carbide is 300 meshes, and the mass fraction of the molybdenum is 99%.

Preferably, the titanium carbide has a particle size of 200 to 300 mesh and a titanium content of 99.5% in the titanium carbide, and preferably, the titanium carbide has an average particle size of 200 mesh.

Preferably, the silicon nitride is nano silicon nitride, the granularity of the silicon nitride is 325-5000 meshes, the average granularity of the silicon nitride is 800 meshes, and the content of silicon in the silicon nitride is 99.9%.

Preferably, the stearic acid is dodecahydroxystearic acid with the purity of 99 percent, and the manufacturer is Nantong Runfeng petrochemical company Limited.

Preferably, the weight average molecular weight of the sodium lignosulfonate is 5000-8000, and preferably, the purity of the lignosulfonate is 99%.

TABLE 1 raw materials and manufacturers

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Examples

Example 1

The light wear-resistant rubber foaming sole is prepared from the following raw materials by weight: 60kg of natural rubber, 30kg of styrene-butadiene rubber, 30kg of butadiene rubber, 1kg of azodicarbonamide, 2kg of sulfur, 0.5kg of dilauryl thiodipropionate, 2kg of biomass functional filler, 10kg of hydroxy acrylic resin, 5kg of wear-resisting agent, 3kg of zinc oxide and 1.5kg of stearic acid. The biomass functional filler is composed of sodium lignosulfonate and oxidized starch according to a mass ratio of 1.

The method for treating transition metal carbide of the present embodiment includes the steps of:

s1, mixing transition metal carbide, a silane coupling agent and water, adding dibutyltin dilaurate, and stirring at a constant temperature of 60 ℃ for 6 hours at a high speed of 300rpm to obtain a reaction product, wherein the adding amount of the silane coupling agent is 80% of that of the transition metal carbide, the adding amount of the water is 50 times of that of the transition metal carbide, and the adding amount of the dibutyltin dilaurate is 5% of that of the transition metal carbide;

(1) According to the formula, adding natural rubber, styrene butadiene rubber and butadiene rubber into an open mill for plastication for 18min, and setting the temperature to be 55 ℃ to obtain plasticated masterbatch;

(2) Adding azodicarbonamide, sulfur, didodecyl thiodipropionate, biomass functional filler, hydroxy acrylic resin, zinc oxide and stearic acid into the plasticated master batch according to the formula, uniformly mixing, and carrying out blending and banburying in an internal mixer at 63 ℃ and 50rpm for 12min to obtain a rubber compound;

(4) Carrying out open milling on the mixed rubber prepared in the step (2) in an open mill to obtain a lower rubber sheet, wherein the temperature is 58 ℃, the thickness of the lower rubber sheet is 7-8mm, and the cutting width is 70-90mm, so as to obtain a rubber sheet, placing the wear-resisting agent treated in the step (3) on the rubber sheet, then placing the rubber sheet in a sole type mold for shaping, and carrying out vulcanization treatment in a vulcanizing machine, wherein the vulcanization temperature is 150 ℃, the vulcanization pressure is 20MPa, and the vulcanization time is 15min; and (5) performing post-treatment operations such as trimming, edging and painting to obtain the product.

A sports shoe with a light wear-resistant rubber foaming sole.

Examples 2 to 4

In each of examples 2 to 4, there are provided light and wear resistant rubber foamed soles with different raw material component ratios, and the raw material component ratio of the light and wear resistant rubber foamed sole corresponding to each example is shown in table 2, where the unit of the raw material ratio is kg.

Table 2 examples 1-4 raw material ratios

Serial number	Example 1	Example 2	Example 3	Example 4
					Natural rubber	60	63	66	70
Styrene butadiene rubber	30	33	36	40
					Cis-butadiene rubber	30	33	36	40
Azodicarbonamide	1	1.3	1.6	2
					Sulfur	2	2.3	2.6	3
Didodecyl thiodipropionate	0.5	0.7	0.9	1
					Biomass functional filler	2	2.3	2.6	3
Hydroxy acrylic resin	10	12	14	15
					Wear-resisting agent	5	7	9	10
Zinc oxide	3	3.5	4.5	5
					Stearic acid	1.5	2	2.5	3

Examples 2-4 differ from example 1 in that: the raw material proportions of the components of the light wear-resistant rubber foamed sole are different, and the rest are the same as those in the embodiment 1.

Example 5

The light wear-resistant rubber foaming sole is prepared from the following raw materials by weight: 70kg of natural rubber, 40kg of styrene-butadiene rubber, 40kg of butadiene rubber, 2kg of azodicarbonamide, 3kg of sulfur, 1kg of dilauryl thiodipropionate, 3kg of biomass functional filler, 15kg of hydroxy acrylic resin, 10kg of wear-resisting agent, 5kg of zinc oxide, 3kg of stearic acid and 2.5kg of wrapping agent. The biomass functional filler is composed of sodium lignosulfonate and oxidized starch according to a mass ratio of 1.

The method of treating the transition metal carbide of this example was the same as in example 1.

(2) Adding azodicarbonamide, sulfur, didodecyl thiodipropionate, biomass functional filler, hydroxy acrylic resin, zinc oxide, stearic acid and a wrapping agent into the plasticated master batch according to a formula, uniformly mixing, and carrying out blending and banburying in an internal mixer at 63 ℃ and 50rpm for 12min to obtain a rubber compound;

A sports shoe with a light wear-resistant rubber foaming sole.

Example 6

This embodiment is different from embodiment 5 in that: the wear-resisting agent consists of alloy particles, transition metal carbide and silicon nitride according to the mass ratio of 6. The rest is exactly the same as in example 5.

Example 7

This embodiment is different from embodiment 5 in that: the wear-resisting agent consists of alloy particles, transition metal carbide and silicon nitride according to the mass ratio of 10. The rest is exactly the same as in example 5.

Example 8

This embodiment is different from embodiment 7 in that: the biomass functional filler is composed of sodium lignosulfonate, oxidized starch and regenerated chitin according to a mass ratio of 2. The rest is exactly the same as in example 7.

Example 9

This embodiment is different from embodiment 7 in that: the biomass functional filler is composed of sodium lignosulfonate, oxidized starch and regenerated chitin according to a mass ratio of 3. The rest is exactly the same as in example 7.

Example 10

The present example differs from example 9 in that the transition metal carbide consists of titanium carbide, molybdenum carbide, and vanadium carbide in a mass ratio of 2. The rest is exactly the same as in example 9.

Example 11

The present example differs from example 9 in that the transition metal carbide consists of titanium carbide, molybdenum carbide, and vanadium carbide in a mass ratio of 3. The rest is exactly the same as in example 9.

Example 12

The difference between the embodiment and the embodiment 11 is that the mass ratio of the natural rubber, the styrene-butadiene rubber and the butadiene rubber is 2. The rest is exactly the same as in example 11.

Example 13

The difference between the present example and example 11 is that the mass ratio of natural rubber, styrene butadiene rubber and butadiene rubber is 13. The rest is exactly the same as in example 11.

Example 14

The difference between the present embodiment and embodiment 13 is that the wrapping agent consists of glyceryl monostearate, solid paraffin and hexadecanol according to a mass ratio of 4. The rest is exactly the same as in example 13.

Example 15

The present embodiment is different from embodiment 14 in that: the alloy particles consist of a tungsten-cobalt alloy, a cobalt-coated tungsten carbide alloy and a high-silicon aluminum alloy according to the mass ratio of 3. The rest is exactly the same as in example 14.

Example 16

The present embodiment is different from embodiment 14 in that: the alloy particles are composed of tungsten-cobalt alloy, cobalt-coated tungsten carbide alloy and high-silicon aluminum alloy according to the mass ratio of 4. The rest is exactly the same as in example 14.

Example 17

This embodiment is different from embodiment 16 in that: the transition metal carbide is not treated with a coupling agent. The rest is exactly the same as in example 16.

Comparative example

Comparative example 1

The light wear-resistant rubber foaming sole of the comparative example is prepared from the following raw materials in parts by weight: 60kg of natural rubber, 30kg of styrene-butadiene rubber, 30kg of butadiene rubber, 1kg of azodicarbonamide, 2kg of sulfur, 0.5kg of dilauryl thiodipropionate, 10kg of hydroxy acrylic resin, 3kg of zinc oxide and 1.5kg of stearic acid.

(2) Adding the rest raw materials into the plasticated master batch according to the formula, uniformly mixing, and carrying out blending and banburying in an internal mixer at 63 ℃ and 50rpm for 12min to obtain a rubber compound;

(3) Carrying out open milling on the rubber compound in an open mill at the temperature of 58 ℃, the thickness of the lower piece is 7-8mm, the cutting width is 70-90mm to obtain a rubber piece, then placing the rubber piece in a sole type mold for shaping, and carrying out vulcanization treatment in a vulcanizing machine at the vulcanization temperature of 150 ℃, the vulcanization pressure of 20MPa and the vulcanization time of 15min; and (5) performing post-treatment operations such as trimming, edging and painting to obtain the product.

Performance test

And (3) detecting the wear resistance: the lightweight and wear-resistant rubber foamed soles prepared in examples 1 to 17 and comparative example 1 were measured according to the test method in GB/T9867-2008 "determination of wear resistance of vulcanized rubber or thermoplastic rubber (rotary drum abrader method)", and the test results are shown in table 3.

And (3) detecting the tensile strength: the light and wear-resistant rubber foamed soles prepared in the examples 1 to 17 and the comparative example 1 were subjected to tensile strength testing according to the testing method in GB/T528-2009 determination of tensile stress strain properties of vulcanized rubber or thermoplastic rubber, and the tensile strength was tested by an electronic universal testing machine, wherein the testing speed was 500mm/min, and the testing results are shown in Table 3.

And (3) resilience testing: the light and wear-resistant rubber foamed soles prepared in examples 1 to 17 and comparative example 1 were subjected to a rebound resilience test according to the test method in GB/T1681-2009 "determination of rebound resilience of vulcanized rubber", and were tested by a rebound resilience tester to obtain rebound resilience, with the test results shown in table 3.

TABLE 3 Properties of light, abrasion-resistant rubber foamed soles

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Combining example 1 and comparative example 1, and combining table 3, it can be seen that by adding an anti-wear agent composed of a plurality of substances and a biomass functional filler composed of a plurality of substances to the raw materials of the rubber sole, the tensile strength and resilience of the rubber sole are better enhanced, and at the same time, the wear of the rubber sole is lower compared to that of comparative example 1, and the wear resistance of the rubber sole is better.

With reference to examples 1-4 and table 3, it can be seen that parameters for improving the wear resistance of the rubber sole are obtained by changing the proportions of the raw material components, and when the addition amounts of the biomass functional filler and the wear-resistant agent are gradually increased, the tensile strength and the rebound resilience of the rubber sole are gradually increased, and meanwhile, the wear is gradually reduced, so that the wear resistance of the rubber sole is increased.

By combining examples 4-7 and table 3, it can be seen that the optimal proportion relationship capable of increasing the wear resistance of the rubber sole is preferably selected through the proportion relationship between the components of the wear-resistant agent and the components of the biomass functional filler, so that the wear resistance of the rubber sole is improved.

By combining examples 7-11 and table 3, it can be seen that by changing the proportion relationship of the carbides in the transition metal carbides, it can be found that the proportions of the carbides are different, the impact on the performance of the rubber sole is different, the tensile strength and the rebound resilience of the rubber sole are increased, the abrasion is reduced, and the wear resistance of the rubber sole is better.

By combining the examples 11 to 16 and the table 3, it can be seen that the combination property of the rubber sole can be further increased by the combination of various rubber materials, and the proportion of different rubbers can be changed, which has an influence on the tensile strength, resilience and abrasion of the rubber sole.

In combination with examples 16-17, and Table 3, it can be seen that the transition metal carbide is not treated with a coupling agent, resulting in poor compatibility of the transition metal carbide with the rubber, thereby decreasing the tensile strength and rebound resilience of the rubber and increasing the abrasion.

The specific embodiments are only for explaining the present application and are not limiting to the present application, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present application.

Claims

1. The light wear-resistant rubber foaming sole is characterized by comprising the following raw materials in parts by weight: 60-70 parts of natural rubber, 30-40 parts of butadiene styrene rubber, 30-40 parts of butadiene rubber, 1-2 parts of azodicarbonamide, 2-3 parts of sulfur, 0.5-1 part of dilauryl thiodipropionate, 2-3 parts of biomass functional filler, 10-15 parts of hydroxy acrylic resin, 5-10 parts of wear-resisting agent, 3-5 parts of zinc oxide and 1.5-3 parts of stearic acid; the biomass functional filler is at least two of sodium lignosulfonate, oxidized starch and regenerated chitin, the wear-resisting agent is composed of alloy particles, transition metal carbide and silicon nitride according to the mass ratio of (6-10) to (7-11) to (3-5), the alloy particles are composed of tungsten-cobalt alloy, cobalt-coated tungsten carbide alloy and high-silicon aluminum alloy according to the mass ratio of (3-4) to (4-5), and the transition metal carbide is at least two of titanium carbide, molybdenum carbide and vanadium carbide.

2. The lightweight wear-resistant rubber foam shoe sole as set forth in claim 1, wherein: the transition metal carbide consists of titanium carbide, molybdenum carbide and vanadium carbide according to the mass ratio of (2-3) to (3-6) to (4-7).

3. The lightweight wear-resistant rubber foam shoe sole as set forth in claim 2, wherein: the transition metal carbide is obtained by treating a silane coupling agent and an organic tin catalyst.

4. The lightweight wear-resistant rubber foam shoe sole according to claim 1, wherein: the mass ratio of the natural rubber to the butadiene rubber to the styrene butadiene rubber is (2-13) to (1-7).

5. The lightweight wear-resistant rubber foam shoe sole according to claim 1, wherein: the biomass functional filler is composed of sodium lignosulphonate, oxidized starch and regenerated chitin according to the mass ratio of (2-3) to (3-5) to (4-6).

6. The lightweight wear-resistant rubber foam shoe sole according to claim 1, wherein: the raw material also comprises 2-3 parts by weight of wrapping agent, wherein the wrapping agent is at least two of glyceryl monostearate, solid paraffin and hexadecanol.

7. A method for preparing a lightweight wear-resistant rubber foamed shoe sole according to any one of claims 1 to 6, comprising the steps of:

8. An athletic shoe using the lightweight abrasion-resistant rubber foam sole according to any one of claims 1 to 6.