Carbon-based environment-friendly base material, preparation method and application thereof and functional insole

Abstract

The invention relates to the technical field of functional insoles, in particular to a carbon-based environment-friendly base material, a preparation method and application thereof and a functional insole. The invention provides a carbon-based environment-friendly base material, which is prepared from the following raw materials in parts by mass: 30 to 35 parts of natural cork particles, 30 to 35 parts of natural rubber, 3.8 to 5.0 parts of accelerant, 2.2 to 2.5 parts of active agent, 0.3 to 0.5 part of anti-aging agent, 5.0 to 8.5 parts of filling agent, 1.8 to 2.2 parts of softening agent, 6.5 to 6.8 parts of pore-forming agent, 5.5 to 5.8 parts of auxiliary agent, 8.0 to 8.5 parts of deodorant, 2.0 to 2.5 parts of scorch retarder, 0.5 to 0.8 part of heat-proof agent, 3.0 to 3.5 parts of separant and 0.8 to 1.0 part of traditional Chinese medicine agent. The carbon-based environment-friendly base material is applied to the functional insole, so that the insole has moisture absorption and deodorization functions.

Description

Technical Field

[0001] The present invention relates to the technical field of functional insoles, and in particular to a carbon-based environmentally friendly substrate, a preparation method and application thereof, and a functional insole. Background Art

[0002] There are many kinds of functional insoles nowadays. Some focus on energy absorption and shock reduction, while others focus on sweat absorption and deodorization. But they all have one thing in common, that is, the base materials they use are all polymer materials, such as PE, VPE, etc. Although the manufacturers have softened and foamed these polymer materials, their basic material properties determine that their ability to absorb moisture and breathe freely cannot be compared with natural materials. For example, clothes made of chemical fiber fabrics are not as breathable and comfortable as clothes made of pure cotton and silk fabrics.

[0003] Although natural materials have advantages over polymer materials in terms of breathability and comfort, it is difficult for a single material to simultaneously meet the requirements of softness, elasticity, wear resistance, plasticity and low price. Therefore, it is inevitable to synthesize the base material of natural materials. When the human body walks or runs, the gravity is entirely borne by the sole of the foot. According to the data summary of the ergonomic human walking sole force analyzer, the dynamic distribution diagram and force characteristics of the human walking foot can be obtained. From the analysis of the dynamic force process and force characteristics of the human heel, arch and forefoot, a more comfortable 3D structure insole can be designed. Summary of the invention

[0004] The purpose of the present invention is to provide a carbon-based environmentally friendly substrate and its preparation method and application, and a functional insole. The carbon-based environmentally friendly substrate is applied to the functional insole to enable the insole to have the function of moisture absorption and deodorization.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0006] The invention provides a carbon-based environmentally friendly substrate, which comprises the following raw materials, measured by weight: 30-35 parts of natural cork particles, 30-35 parts of natural rubber, 3.8-5.0 parts of accelerators, 2.2-2.5 parts of active agents, 0.3-0.5 parts of antioxidants, 5.0-8.5 parts of fillers, 1.8-2.2 parts of softeners, 6.5-6.8 parts of pore-forming agents, 5.5-5.8 parts of additives, 8.0-8.5 parts of deodorants, 2.0-2.5 parts of anti-scorching agents, 0.5-0.8 parts of heat-proof agents, 3.0-3.5 parts of isolating agents and 0.8-1.0 parts of traditional Chinese medicines.

[0007] Preferably, the accelerator includes a first accelerator, a second accelerator, a third accelerator and a fourth accelerator;

[0008] The mass ratio of the first accelerator, the second accelerator, the third accelerator and the fourth accelerator is (0.8-1.1): (0.3-0.5): (1.5-1.8): (1.2-1.6);

[0009] The first accelerator includes mercaptobenzothiazole and / or zinc dimethylaminodisulfide;

[0010] The second accelerator includes dibenzothiazyl disulfide and / or 2-mercaptobenzothiazole;

[0011] The third accelerator includes one or more of tetramethylthiuram monosulfide, tetrabutylthiuram monosulfide and tetramethylthiuram disulfide;

[0012] The fourth accelerator includes sulfur.

[0013] The present invention also provides a method for preparing the carbon-based environmentally friendly substrate described in the above technical solution, comprising the following steps:

[0014] After mixing natural cork particles and natural rubber, adding part of the accelerator, and performing plasticizing to obtain a mixture;

[0015] After the mixture, active agent, part of softener, pore-forming agent and auxiliary agent are mixed, the first rubber mixing is carried out, and then the remaining accelerator, deodorant, heat inhibitor, isolation agent, anti-aging agent, filler, anti-scorch agent, traditional Chinese medicine agent and remaining softener are added, and the second rubber mixing and vulcanization are carried out in sequence to obtain the carbon-based environmentally friendly substrate.

[0016] Preferably, the partial accelerator includes a first accelerator, a second accelerator and a third accelerator;

[0017] The process of adding the part of the accelerator includes: adding the first accelerator for a first rolling, stopping for 8 hours, adding the second accelerator for a second rolling, stopping for 8 hours, and adding the third accelerator for a third rolling;

[0018] The temperature of the first rolling is 33-37°C and the number of times is 20 times;

[0019] The temperature of the second rolling is 36.5-40.5°C, and the number of times is 20 times;

[0020] The temperature of the third rolling is 41.5-43.5° C. and the number of times is 30 times.

[0021] Preferably, the temperature of the first rubber compound is 66-70°C, the rolling distance is 10-12 mm, and the number of times is 20;

[0022] The temperature of the second rubber compound is 71-75°C, the rolling distance is 4-6mm, and the number of times is 30;

[0023] The vulcanization temperature is 152-156° C. and the vulcanization time is 5.5-6.5 min.

[0024] The present invention also provides the use of the carbon-based environmentally friendly substrate described in the above technical solution or the carbon-based environmentally friendly substrate prepared by the preparation method described in the above technical solution in functional insoles.

[0025] The present invention also provides a functional insole, which comprises an environmentally friendly wear-resistant cloth, a carbon-based environmentally friendly substrate and a functional layer stacked in sequence from top to bottom;

[0026] The carbon-based environmentally friendly substrate is the carbon-based environmentally friendly substrate described in the above technical solution or the carbon-based environmentally friendly substrate prepared by the preparation method described in the above technical solution;

[0027] The functional layer includes a rubber shock-absorbing airbag layer partially embedded in the heel and outer arch of the carbon-based environmentally friendly substrate, a support layer located at the inner arch of the carbon-based environmentally friendly substrate surface, and a high-elastic anti-skid layer at the forefoot of the carbon-based environmentally friendly substrate surface.

[0028] Preferably, the hardness of the support layer is 95-98 degrees.

[0029] Preferably, the rubber shock-absorbing airbag layer comprises a high-elastic sponge and a natural rubber airbag provided with exhaust holes in the high-elastic sponge in the direction of the inner arch of the foot;

[0030] The pore diameter of the natural rubber airbag is 1.5-2.0 mm.

[0031] Preferably, the high-elastic anti-slip layer is a honeycomb structure.

[0032] The present invention provides a carbon-based environmentally friendly substrate, which includes the following raw materials by weight: 30-35 parts of natural cork particles, 30-35 parts of natural rubber, 3.8-5.0 parts of accelerators, 2.2-2.5 parts of active agents, 0.3-0.5 parts of antioxidants, 5.0-8.5 parts of fillers, 1.8-2.2 parts of softeners, 6.5-6.8 parts of pore-forming agents, 5.5-5.8 parts of additives, 8.0-8.5 parts of deodorants, 2.0-2.5 parts of anti-scorch agents, 0.5-0.8 parts of heat-resistant agents, 3.0-3.5 parts of isolation agents, and 0.8-1.0 parts of traditional Chinese medicine agents. The carbon-based environmentally friendly substrate of the present invention has excellent moisture absorption, air permeability, and deodorization effects, and is also wear-resistant, elastic, easy to process, green and environmentally friendly, and low-cost.

[0033] The present invention also provides a functional insole, which comprises an environmentally friendly wear-resistant cloth, a carbon-based environmentally friendly substrate and a functional layer stacked in sequence from top to bottom; the carbon-based environmentally friendly substrate is the carbon-based environmentally friendly substrate described in the above technical solution or the carbon-based environmentally friendly substrate prepared by the preparation method described in the above technical solution; the functional layer comprises a rubber shock-absorbing airbag layer partially embedded in the heel and outer arch of the carbon-based environmentally friendly substrate, a support layer located at the inner arch of the surface of the carbon-based environmentally friendly substrate, and a high-elastic anti-skid layer at the forefoot of the surface of the carbon-based environmentally friendly substrate. The functional insole absorbs energy and shocks, forces the shoe to absorb and exhaust air, improves the gas circulation in the shoe, and can achieve the amazing effect of no odor in the insole without changing or washing for a year. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the structure of the functional insole of the present invention;

[0035] Figure 2 This is a schematic diagram of the structure of the rubber shock-absorbing airbag layer at the heel of the functional insole of the present invention;

[0036] Figure 3 This is a schematic diagram of the structure of the rubber shock-absorbing airbag layer at the outer arch of the functional insole of the present invention;

[0037] Figure 4 This is a schematic structural diagram of the support layer at the inner arch of the functional insole of the present invention;

[0038] Figure 5 This is a schematic structural diagram of the high-elastic anti-skid layer on the forefoot of the functional insole of the present invention;

[0039] Figure 6 This is a schematic diagram of a 3D half-cup shape of the heel of the functional insole of the present invention;

[0040] Figure 7 A schematic diagram of the position of the metatarsal ball of the functional insole of the present invention;

[0041] Figure 8 The test report of the functional insole described in Example 2;

[0042] Fig. 9 The test report of the functional insole described in Example 2;

[0043] Fig.10 The test report of the functional insole described in Example 2;

[0044] Among them, 1 is a high-elastic anti-skid layer, 2 is a supporting layer, 3 is a rubber shock-absorbing airbag layer, 4 is an exhaust hole, 5 is a half-cup surrounding shape, 6 is a protrusion of the metatarsal ball, 7 is a carbon-based environmentally friendly substrate, and 8 is an environmentally friendly wear-resistant fabric. DETAILED DESCRIPTION

[0045] The invention provides a carbon-based environmentally friendly substrate, which comprises the following raw materials, measured by weight: 30-35 parts of natural cork particles, 30-35 parts of natural rubber, 3.8-5.0 parts of accelerators, 2.2-2.5 parts of active agents, 0.3-0.5 parts of antioxidants, 5.0-8.5 parts of fillers, 1.8-2.2 parts of softeners, 6.5-6.8 parts of pore-forming agents, 5.5-5.8 parts of additives, 8.0-8.5 parts of deodorants, 2.0-2.5 parts of anti-scorching agents, 0.5-0.8 parts of heat-proof agents, 3.0-3.5 parts of isolating agents and 0.8-1.0 parts of traditional Chinese medicines.

[0046] In the present invention, unless otherwise specified, all preparation raw materials are commercially available products well known to those skilled in the art.

[0047] According to the mass percentage, the carbon-based environmentally friendly substrate of the present invention includes 30 to 35 parts of natural cork particles, preferably 31 to 34 parts, and more preferably 32 to 33 parts. In the present invention, the particle size of the natural cork particles is preferably 0.1 to 2.5 mm, more preferably 0.5 to 2.5 mm; wherein the mass proportion of particles of 2.0 to 2.5 mm is ≥ 45%. In the present invention, the natural cork particles are preferably one or more of pine particles, fir particles, camphor particles, basswood particles and catalpa particles; when the natural cork particles are two or more of the above-mentioned specific selections, the present invention does not have any special restrictions on the ratio of the above-mentioned specific substances, and can be mixed in any ratio. In the present invention, the above-mentioned types of natural cork particles are economical, can reduce processing costs, and are easy to promote on a large scale.

[0048] In the present invention, the natural cork particles have the functions of absorbing moisture, being breathable, and releasing deodorants and traditional Chinese medicines.

[0049] Based on the mass fraction of the natural cork particles, the carbon-based environmentally friendly substrate of the present invention includes 30 to 35 parts of natural rubber, preferably 31 to 34 parts, and more preferably 32 to 33 parts. In the present invention, the natural rubber preferably includes one or more of the national standard No. 1 to 3 and the smoke No. 1 to 3 rubber. When the natural rubber is two or more of the above specific options, the present invention has no special restrictions on the ratio of the above specific substances, and they can be mixed in any ratio.

[0050] In the present invention, the natural rubber functions as a binder for the cork particles, is easy to shape and provides soft elasticity.

[0051] Based on the mass fraction of the natural cork particles, the carbon-based environmentally friendly substrate of the present invention includes 3.8 to 5.0 parts of promoter, preferably 4.0 to 4.8 parts, and more preferably 4.2 to 4.6 parts. In the present invention, the promoter preferably includes a first promoter, a second promoter, a third promoter, and a fourth promoter; the mass ratio of the first promoter, the second promoter, the third promoter, and the fourth promoter is preferably (0.8 to 1.1): (0.3 to 0.5): (1.5 to 1.8): (1.2 to 1.6), more preferably (0.9 to 1.0): (0.35 to 0.45): (1.6 to 1.7): (1.3 to 1.5). In the present invention, the first accelerator preferably includes mercaptobenzothiazole and / or zinc dimethylaminodisulfide, more preferably mercaptobenzothiazole; when the first accelerator is two of the above specific selections, the present invention has no special restrictions on the ratio of the above specific substances, and they can be mixed in any ratio. The second accelerator preferably includes dibenzothiazole disulfide and / or 2-mercaptobenzothiazole, more preferably dibenzothiazole disulfide; when the second accelerator is two of the above specific selections, the present invention has no special restrictions on the ratio of the above specific substances, and they can be mixed in any ratio. The third accelerator preferably includes one or more of tetramethylthiuram monosulfide, tetrabutylthiuram monosulfide and tetramethylthiuram disulfide, more preferably tetramethylthiuram monosulfide; when the third accelerator is two or more of the above specific selections, the present invention has no special restrictions on the ratio of the above specific substances, and they can be mixed in any ratio. The fourth accelerator preferably includes sulfur; the sulfur preferably includes one or more of colloidal sulfur, insoluble sulfur and precipitated sulfur; when the fourth accelerator is two or more of the above specific options, the present invention has no special limitation on the ratio of the above specific substances, and they can be mixed in any ratio.

[0052] In the present invention, the first accelerator is used to promote the initial fusion of cork particles and natural rubber, the second accelerator is used to facilitate the complexation of various substances, the third accelerator is used to generate the complex required for the vulcanization reaction, and the fourth accelerator is used to reduce the vulcanization ring opening temperature and promote crosslinking; the role of compounding the above four accelerators is to accelerate the complexation and vulcanization reactions.

[0053] Based on the mass fraction of the natural cork particles, the carbon-based environmentally friendly substrate of the present invention includes 2.2 to 2.5 parts of an active agent, preferably 2.3 to 2.4 parts. In the present invention, the active agent preferably includes one or more of zinc oxide, stearic acid, vaseline, paraffin, rosin and coumarone. When the active agent is two or more of the above specific selections, the present invention has no special restrictions on the ratio of the above specific substances, and can be mixed in any ratio.

[0054] In the present invention, the function of the active agent is to increase the activity of the promoter.

[0055] Based on the mass fraction of the natural cork particles, the carbon-based environmentally friendly substrate of the present invention includes 0.3 to 0.5 parts of antioxidant, preferably 0.35 to 0.45 parts, and more preferably 0.38 to 0.42 parts. In the present invention, the antioxidant is preferably one or more of styrenated phenol, hydroquinone benzyl ether, 2-thiol benzimidazole and 2-thiol benzimidazole zinc salt. When the antioxidant is two or more of the above-mentioned specific selections, the present invention has no special restrictions on the ratio of the above-mentioned specific substances, and they can be mixed in any ratio.

[0056] In the present invention, the antioxidant has the function of extending the use time of the product and improving its performance.

[0057] Based on the mass fraction of the natural cork particles, the carbon-based environmentally friendly substrate of the present invention includes 5.0 to 8.5 parts of filler, preferably 6.0 to 8.0 parts, and more preferably 6.5 to 7.5 parts. In the present invention, the filler preferably includes one or more of calcium carbonate, clay, white carbon black, lignin and magnesium carbonate. When the filler is two or more of the above-mentioned specific selections, the present invention has no special restrictions on the ratio of the above-mentioned specific substances, and they can be mixed in any ratio.

[0058] In the present invention, the filler serves to meet the process requirements for manufacturing the product, making it easy to operate and reducing costs.

[0059] Based on the mass fraction of the natural cork particles, the carbon-based environmentally friendly substrate of the present invention includes 1.8 to 2.2 parts of a softener, preferably 1.9 to 2.1 parts, and more preferably 2.0 parts. In the present invention, the softener preferably includes one or more of vaseline, calcium-based grease, paraffin, transformer oil, coumarone and rosin. When the softener is two or more of the above-mentioned specific selections, the present invention has no special restrictions on the ratio of the above-mentioned specific substances, and can be mixed in any ratio.

[0060] In the present invention, the role of the softener is to facilitate pore formation during the manufacturing process.

[0061] Based on the mass fraction of the natural cork particles, the carbon-based environmentally friendly substrate of the present invention includes 6.5 to 6.8 parts of pore-forming agent, preferably 6.6 to 6.7 parts, and more preferably 6.7 parts. In the present invention, the pore-forming agent preferably includes one or more of dinitrosopentamethylenetetramine, sodium bicarbonate, urea complex and azodicarbonamide. When the pore-forming agent is two or more of the above-mentioned specific selections, the present invention has no special restrictions on the ratio of the above-mentioned specific substances, and they can be mixed in any ratio.

[0062] In the present invention, the function of the pore-forming agent is to increase the softness of the product.

[0063] Based on the mass fraction of the natural cork particles, the carbon-based environmentally friendly substrate of the present invention includes 5.5 to 5.8 parts of additives, preferably 5.6 to 5.7 parts, and more preferably 5.7 parts; in the present invention, the additive preferably includes urea ester.

[0064] In the present invention, the auxiliary agent functions to remove the odor generated when the pore-forming agent is used and to reduce the pore-forming temperature.

[0065] Based on the mass fraction of the natural cork particles, the carbon-based environmentally friendly substrate of the present invention includes 8.0 to 8.5 parts of deodorant, preferably 8.1 to 8.4 parts, and more preferably 8.2 to 8.3 parts. In the present invention, the deodorant preferably includes one or more of salicylic acid, boric acid and sophora flavescens. When the deodorant is two or more of the above-mentioned specific selections, the present invention has no special restrictions on the ratio of the above-mentioned specific substances, and they can be mixed in any ratio.

[0066] In the present invention, the deodorant has the function of inhibiting bacteria and deodorizing.

[0067] Based on the mass fraction of the natural cork particles, the carbon-based environmentally friendly substrate of the present invention includes 2.0 to 2.5 parts of scorch retarder, preferably 2.1 to 2.4 parts, and more preferably 2.2 to 2.3 parts. In the present invention, the scorch retarder preferably includes one or more of benzoic acid, o-hydroxybenzoic acid and phthalic acid. When the scorch retarder is two or more of the above-mentioned specific selections, the present invention has no special restrictions on the ratio of the above-mentioned specific substances, and they can be mixed in any ratio.

[0068] In the present invention, the anti-scorching agent has the function of prolonging the burning time of the glue, preventing the glue from being cooked, and facilitating the formation of pores.

[0069] Based on the mass fraction of the natural cork particles, the carbon-based environmentally friendly substrate of the present invention includes 0.5 to 0.8 parts of heat shielding agent, preferably 0.55 to 0.75 parts, and more preferably 0.6 to 0.7 parts. In the present invention, the heat shielding agent preferably includes carbon black powder.

[0070] In the present invention, the heat-protecting agent has the functions of absorbing heat and conducting heat to prevent local high temperature in the production process.

[0071] Based on the mass fraction of the natural cork particles, the carbon-based environmentally friendly substrate of the present invention includes 3.0 to 3.5 parts of a release agent, preferably 3.1 to 3.4 parts, and more preferably 3.2 to 3.3 parts. In the present invention, the release agent preferably includes one or more of talcum powder, sodium oleate soap, zinc stearate and plastic compound release agent. When the release agent is two or more of the above-mentioned specific selections, the present invention has no special restrictions on the ratio of the above-mentioned specific substances, and can be mixed in any ratio.

[0072] In the present invention, the release agent is used to make the rubber semi-finished product and prevent adhesion during production.

[0073] Based on the mass fraction of the natural cork particles, the carbon-based environmentally friendly substrate of the present invention includes 0.8 to 1.0 parts of Chinese medicine, preferably 0.85 to 0.95 parts. In the present invention, the Chinese medicine preferably includes one or more of light powder, lithospermum officinale, angelica dahurica, angelica sinensis, blood clotting, liquorice and insect white wax. When the Chinese medicine is two or more of the above-mentioned specific selections, the present invention has no special restrictions on the ratio of the above-mentioned specific substances, and they can be mixed in any ratio.

[0074] The present invention also provides a method for preparing the carbon-based environmentally friendly substrate described in the above technical solution, comprising the following steps:

[0075] After mixing natural cork particles and natural rubber, adding part of the accelerator, and performing plasticizing to obtain a mixture;

[0076] After the mixture, active agent, part of softener, pore-forming agent and auxiliary agent are mixed, the first rubber mixing is carried out, and then the remaining accelerator, deodorant, heat inhibitor, isolation agent, anti-aging agent, filler, anti-scorch agent, traditional Chinese medicine agent and remaining softener are added, and the second rubber mixing and vulcanization are carried out in sequence to obtain the carbon-based environmentally friendly substrate.

[0077] The method comprises mixing natural cork particles and natural rubber, adding part of accelerator, and performing plasticizing to obtain a mixture.

[0078] The present invention does not have any special limitation on the mixing process, and the mixing process may be carried out using a process well known to those skilled in the art.

[0079] In the present invention, the partial accelerator preferably includes a first accelerator, a second accelerator and a third accelerator; the process of adding the partial accelerator preferably includes: adding the first accelerator for the first rolling, stopping for 8 hours, adding the second accelerator for the second rolling, stopping for 8 hours, and adding the third accelerator for the third rolling. In the present invention, the temperature of the first rolling is preferably 33-37°C, more preferably 35°C; the number of times is preferably 20 times. In the present invention, the first rolling is preferably 10 times per rolling, preferably 12-15°C warming up; the temperature of the first rolling is preferably the temperature after the last warming up. In the present invention, the temperature of the second rolling is preferably 36.5-40.5°C, more preferably 38.5°C; the number of times is preferably 20 times. In the present invention, the second rolling is preferably 10 times per rolling, preferably 12-15°C warming up; the temperature of the second rolling is preferably the temperature after the last warming up. In the present invention, the temperature of the third rolling is preferably 41.5-43.5°C, more preferably 41.5°C; the number of times is preferably 30 times. The third rolling is preferably performed 10 times with the temperature increased by 12-15° C.; the temperature of the third rolling is preferably the temperature after the last temperature increase.

[0080] In the present invention, the role of the above-mentioned step-by-step rolling is to fully integrate, complex and mature various materials to prepare for the final vulcanization molding.

[0081] After obtaining the mixture, the present invention mixes the mixture, the active agent, part of the softener, the pore-forming agent and the auxiliary agent, performs the first rubber mixing, and then adds the remaining accelerator, deodorant, heat inhibitor, isolation agent, anti-aging agent, filler, anti-scorch agent, traditional Chinese medicine agent and the remaining softener, and sequentially performs the second rubber mixing and vulcanization to obtain the carbon-based environmentally friendly substrate.

[0082] In the present invention, the mass of the partial softener preferably accounts for 1 / 3 to 1 / 2 of the mass of the softener.

[0083] In the present invention, the mixing is preferably performed by rolling in a rubber mixer; the present invention does not have any special limitation on the conditions and times of the rolling, and the conditions and times well known to those skilled in the art can be used.

[0084] In the present invention, the temperature of the first rubber mix is ​​preferably 66-70°C, more preferably 68-69°C; the rolling distance is preferably 10-12mm, more preferably 11mm; the number of times is preferably 30 times. The first rubber mix is ​​preferably heated by 12-15°C for every 10 rollings; the temperature of the first rubber mix is ​​preferably the temperature after the last heating. In the present invention, the rolling distance is preferably increased by 2mm for every 10 rollings.

[0085] In the present invention, the temperature of the second rubber mix is ​​preferably 71-75°C, more preferably 72-74°C; the rolling distance is preferably 4-6mm, more preferably 5mm; the number of times is preferably 30 times. The second rubber mix is ​​preferably rolled 10 times, preferably with a temperature increase of 12-15°C; the temperature of the second rubber mix is ​​preferably the temperature after the last temperature increase.

[0086] After the second rubber mixing is completed, the present invention further preferably includes cooling the lower sheet. The present invention has no special limitation on the process of cooling the lower sheet, and the process well known to those skilled in the art can be used.

[0087] In the present invention, the vulcanization temperature is preferably 152-156° C., more preferably 153-155° C., and most preferably 154° C.; the vulcanization time is preferably 5.5-6.5 min, and more preferably 5.8-6.2 min.

[0088] The present invention also provides the use of the carbon-based environmentally friendly substrate described in the above technical solution or the carbon-based environmentally friendly substrate prepared by the preparation method described in the above technical solution in functional insoles.

[0089] The present invention also provides a functional insole, which comprises an environmentally friendly wear-resistant cloth, a carbon-based environmentally friendly substrate and a functional layer stacked in sequence from top to bottom;

[0090] The carbon-based environmentally friendly substrate is the carbon-based environmentally friendly substrate described in the above technical solution or the carbon-based environmentally friendly substrate prepared by the preparation method described in the above technical solution;

[0091] like Figure 1 As shown, the functional layer includes a rubber shock-absorbing airbag layer partially embedded in the heel and outer arch of the carbon-based environmentally friendly substrate, a support layer located at the inner arch of the surface of the carbon-based environmentally friendly substrate, and a high-elastic anti-slip layer at the forefoot of the carbon-based environmentally friendly substrate.

[0092] In the present invention, the environmentally friendly wear-resistant fabric is preferably a 65 / 35 blended cotton fabric.

[0093] In the present invention, the environmentally friendly wear-resistant cloth and the carbon-based environmentally friendly substrate are preferably stacked by compression molding; the present invention does not have any special limitation on the compression molding process, and the process familiar to those skilled in the art can be used.

[0094] In the present invention, the rubber shock-absorbing airbag layer preferably includes a high-elastic sponge and a vent hole (such as Figure 1 The pore size of the natural rubber airbag is preferably 1.5 to 2.0 mm.

[0095] In the present invention, since the first point of force when the human body walks is the heel, the shock-absorbing airbag is arranged here to effectively reduce the vibration when the sole of the foot lands. When it is compressed and deformed, the gas in the airbag is discharged forward from the micropores of the airbag. After the center of gravity of the human body moves forward, the high-elastic sponge in the airbag rebounds, and negative pressure is generated in the airbag. The gas is sucked back into the airbag through the micropores of the airbag. This cycle is repeated, which can greatly reduce the impact force and vibration when the heel lands, and provide the necessary elastic force when the heel leaves the ground. At the same time, the gas micropores in the shoe are forced to circulation; at the same time, when the human body walks, the center of gravity gradually moves from the heel to the outer arch of the foot, where a shock-absorbing airbag is arranged. When it is deformed under pressure, the gas in the airbag is discharged from the micropores of the airbag to the lateral pores of the inner arch of the foot. After the center of gravity of the human body moves further forward, the high-elastic sponge in the airbag rebounds, and negative pressure is generated in the airbag. The gas is sucked back into the airbag through the micropores of the airbag, and this cycle is repeated again and again, which not only greatly reduces the impact force and vibration of the outer arch of the foot when it lands, but also provides the necessary elastic force when the outer arch of the foot leaves the ground, and at the same time, forces the gas in the shoe to microcirculate.

[0096] In the present invention, the heel of the carbon-based environmentally friendly substrate is preferably provided with an elliptical groove for embedding a shock-absorbing airbag. In the present invention, the outer arch of the carbon-based environmentally friendly substrate is preferably provided with a strip-shaped groove for embedding a shock-absorbing airbag.

[0097] In the present invention, the heel of the carbon-based environmentally friendly substrate is preferably 3D-molded according to the human body big data model so that the heel is in a half-cup surrounded shape (such as Figure 6 ) to improve foot wrapping support and comfort.

[0098] In the present invention, the carbon-based environmentally friendly substrate is preferably provided with an elliptical protrusion (such as Figure 7 ) to provide lateral sole support, enhance plantar shock absorption and stabilize the plantar structure.

[0099] In the present invention, the hardness of the support layer is preferably 95 to 98 degrees. In the present invention, the material of the support layer is preferably a carbon-based environmentally friendly material; the difference between the carbon-based environmentally friendly material and the carbon-based environmentally friendly substrate described in the above technical solution is preferably that 12 vol% of high benzene polyethylene, polyurethane or ABS is added before vulcanization during the preparation process. In the present invention, the support layer is preferably an arched support layer, and the shape of the arched support layer is preferably designed according to the Chinese people's plantar big data model (existing model) to meet ergonomic requirements.

[0100] In the present invention, the support layer and the carbon-based environmentally friendly substrate are preferably stacked in an up-and-down nesting manner.

[0101] In the present invention, the high-elastic anti-skid layer is preferably a honeycomb structure; the high-elastic anti-skid layer is preferably at the bottom of the insole; the diamond-shaped indentations are preferably at the upper part of the insole; the honeycomb structure provides partial elasticity while reducing shock. In the present invention, the material of the high-elastic anti-skid layer is preferably polyurethane. In the present invention, the function of the high-elastic anti-skid layer is to provide cushioning and rebound at the arch and forefoot.

[0102] In the present invention, the high-elastic anti-skid layer and the carbon-based environmentally friendly substrate are preferably stacked in an up-and-down nesting manner.

[0103] The carbon-based environmentally friendly substrate, its preparation method and application, and functional insole provided by the present invention are described in detail below in conjunction with the embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0104] Example 1

[0105] 50g of cork particles (the type of cork particles is pine wood. After washing, dust removal and drying in sequence, sieve out cork particles with a particle size of 0.1-2.5mm (of which 2.0-2.5mm accounts for ≥45%) and mix with 53g of natural rubber (model or type is national standard No. 1), add 1.4g of the first accelerator (thiol benzothiazole), put it into the rubber mixer and roll it 20 times. After rolling for 10 times, heat it up by 12°C until the final temperature is controlled At 35±2°C, after standing for 8 hours, 0.8g of the second accelerator (dibenzothiazole disulfide) was added and the mixture was rolled for 20 times. After each rolling, the temperature was raised by 12°C until the final temperature was controlled at 38.5±2°C. After standing for 8 hours, 2.24g of the third accelerator (tetramethylthiuram monosulfide) was added and the mixture was rolled for 30 times. After each rolling, the temperature was raised by 12°C until the final temperature was controlled at 41.5±2°C until the plasticity reached 0.6, thereby obtaining a mixture.

[0106] After adding 3.7g of active agent (stearic acid), 2.4g of softener (vaseline), 11.5g of pore-forming agent (dinitrosopentamethylenetetramine) and 10.5g of auxiliary agent (urea ester) to the mixture, the mixture was rolled 30 times on a rubber mixer, the temperature of the rubber mixer was gradually increased to 68±2°C (15°C for every 10 rollings), and the rolling distance of the rubber mixer was gradually increased (the rolling distance was increased by 2mm for every 10 rollings), and 1.96g of the fourth accelerator (sulfur), 13.6g of deodorant (salicylic acid), 1.0g of heat-resistant The rubber mixer was heated to 73±2°C again, the rolling distance was adjusted to 5mm, and the mixing was performed for 30 times (each time the mixing was performed for 10 times, the temperature was increased by 15°C), and the lower sheet was cooled and then vulcanized (the vulcanization temperature was 154±2°C and the time was 6min) to obtain a carbon-based environmentally friendly substrate.

[0107] Example 2

[0108] like Figures 1 to 7 As shown, the functional insole includes an environmentally friendly wear-resistant fabric (65 / 35 blended cotton fabric), the carbon-based environmentally friendly substrate described in Example 1 (the environmentally friendly wear-resistant fabric and the carbon-based environmentally friendly substrate are laminated by molding and compounding), and a functional layer.

[0109] The functional layer includes a rubber shock-absorbing airbag layer (including a high-elastic sponge and a natural rubber airbag with exhaust holes arranged in the high-elastic sponge and facing the inner arch direction (the aperture of the exhaust hole is 1.5-2.0 mm)) embedded in the heel of the carbon-based environmentally friendly substrate (the heel of the carbon-based environmentally friendly substrate is provided with an elliptical groove) and the outer arch (provided with a strip-shaped groove), a support layer located at the inner arch of the carbon-based environmentally friendly substrate surface, and a high-elastic anti-skid layer at the forefoot of the carbon-based environmentally friendly substrate surface; the heel of the carbon-based environmentally friendly substrate is 3D compression molded according to the human body big data model so that the heel is in a half-cup surrounded shape; the carbon-based An elliptical protrusion is arranged at the metatarsal ball of the plantar of the environmentally friendly substrate; a diamond-shaped indentation is pressed at the position where the carbon-based environmentally friendly substrate contacts the sole of the foot; the hardness of the support layer is 100 degrees, and the material of the support layer is different from the carbon-based environmentally friendly substrate described in Example 1 in that 12% high-phenylene polyethylene is added before vulcanization during the preparation process; the support layer and the carbon-based environmentally friendly substrate are stacked by nesting up and down; the support layer is an arched support layer prepared according to the big data model of the soles of Chinese people; the honeycomb structure of the high-elastic anti-skid layer is made of polyurethane; the high-elastic anti-skid layer and the carbon-based environmentally friendly substrate are stacked by nesting up and down.

[0110] The functional insole is a moisture-absorbing and deodorizing functional insole that meets ergonomic requirements. It can be used for various types of shoes and can provide a reliable and effective personal hygiene protection and sports function protection. The test results show that the functional insole comprehensively exceeds the relevant requirements of national standards in terms of wear resistance, sweat resistance and antibacterial properties, achieving the amazing effect of no odor after wearing for a year without changing or washing. At the same time, the ergonomic structural design also makes the moisture-absorbing and deodorizing insole body in terms of wearing comfort, breathability, fatigue resistance and sports protection, which complements the excellent performance of the carbon-based environmentally friendly substrate.

[0111] The performance parameters of the functional insole are as follows: mass moisture absorption rate: 39.5%, moisture permeability: 38.1%, antibacterial rate: 82.3%, antiperspiration rate: 80.5%, wear resistance: dry friction 12800 times, wet friction 12800 times without wear and pilling (test report as shown in the figure) Figures 8 to 10 shown).

[0112] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A carbon-based environmentally friendly substrate, characterized in that: The preparation raw materials include the following in parts by mass: 30-35 parts of natural cork particles, 30-35 parts of natural rubber, 3.8-5.0 parts of accelerators, 2.2-2.5 parts of active agents, 0.3-0.5 parts of antioxidants, 5.0-8.5 parts of fillers, 1.8-2.2 parts of softeners, 6.5-6.8 parts of pore-forming agents, 5.5-5.8 parts of additives, 8.0-8.5 parts of deodorants, 2.0-2.5 parts of anti-scorching agents, 0.5-0.8 parts of heat-proof agents, 3.0-3.5 parts of release agents and 0.8-1.0 parts of traditional Chinese medicines.

2. The carbon-based environmentally friendly substrate according to claim 1, characterized in that: The accelerators include a first accelerator, a second accelerator, a third accelerator and a fourth accelerator; The mass ratio of the first accelerator, the second accelerator, the third accelerator and the fourth accelerator is (0.8-1.1): (0.3-0.5): (1.5-1.8): (1.2-1.6); The first accelerator includes mercaptobenzothiazole and / or zinc dimethylaminodisulfide; The second accelerator includes dibenzothiazyl disulfide and / or 2-thiolbenzothiazole; The third accelerator includes one or more of tetramethylthiuram monosulfide, tetrabutylthiuram monosulfide and tetramethylthiuram disulfide; The fourth accelerator includes sulfur.

3. The method for preparing the carbon-based environmentally friendly substrate according to claim 1 or 2, characterized in that: The following steps are involved: After mixing natural cork particles and natural rubber, adding part of the accelerator, and performing plasticizing to obtain a mixture; After the mixture, active agent, part of softener, pore-forming agent and auxiliary agent are mixed, the first rubber mixing is carried out, and then the remaining accelerator, deodorant, heat inhibitor, isolation agent, anti-aging agent, filler, anti-scorch agent, traditional Chinese medicine agent and remaining softener are added, and the second rubber mixing and vulcanization are carried out in sequence to obtain the carbon-based environmentally friendly substrate.

4. The preparation method according to claim 3, characterized in that: The partial accelerators include a first accelerator, a second accelerator and a third accelerator; The process of adding the part of the accelerator includes: adding the first accelerator for a first rolling, stopping for 8 hours, adding the second accelerator for a second rolling, stopping for 8 hours, and adding the third accelerator for a third rolling; The temperature of the first rolling is 33-37°C and the number of times is 20 times; The temperature of the second rolling is 36.5-40.5°C, and the number of times is 20 times; The temperature of the third rolling is 41.5-43.5° C. and the number of times is 30 times.

5. The preparation method according to claim 3, characterized in that: The temperature of the first rubber compound is 66-70°C, the rolling distance is 10-12mm, and the number of times is 20; The temperature of the second rubber compound is 71-75°C, the rolling distance is 4-6mm, and the number of times is 30; The vulcanization temperature is 152-156° C. and the vulcanization time is 5.5-6.5 min.

6. Use of the carbon-based environmentally friendly substrate according to claim 1 or 2 or the carbon-based environmentally friendly substrate prepared by the preparation method according to any one of claims 3 to 5 in functional insoles.

7. A functional insole, characterized in that: From top to bottom, it includes environmentally friendly wear-resistant fabric, carbon-based environmentally friendly substrate and functional layer stacked in sequence; The carbon-based environmentally friendly substrate is the carbon-based environmentally friendly substrate according to claim 1 or 2 or the carbon-based environmentally friendly substrate prepared by the preparation method according to any one of claims 3 to 5; The functional layer includes a rubber shock-absorbing airbag layer partially embedded in the heel and outer arch of the carbon-based environmentally friendly substrate, a support layer located at the inner arch of the carbon-based environmentally friendly substrate surface, and a high-elastic anti-skid layer at the forefoot of the carbon-based environmentally friendly substrate surface.

8. The functional insole according to claim 7, characterized in that: The hardness of the support layer is 95-98 degrees.

9. The functional insole according to claim 7, characterized in that: The rubber shock-absorbing airbag layer includes a high-elastic sponge and a natural rubber airbag arranged in the high-elastic sponge and having an exhaust hole in the direction of the inner arch of the foot; The pore diameter of the natural rubber airbag is 1.5-2.0 mm.

10. The functional insole according to claim 7, characterized in that: The high-elastic anti-skid layer is a honeycomb structure.

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