A yoga mat capable of releasing negative oxygen ions and a preparation method thereof

Abstract

The application discloses a yoga mat capable of releasing negative oxygen ions and a preparation method thereof, and relates to the technical field of yoga mats.The method comprises the following steps: mixing a foaming agent with negative ion powder and ball-milling into superfine particles, then soaking in a plasticizer, after the soaking is completed, ball-milling again to scatter, and obtaining fine mixed particles; stirring and uniformly mixing the materials, stopping the stirring when the viscosity of the slurry meets the requirements, and obtaining mixed slurry; step three, coating and scraping the mixed slurry on a mesh cloth, scraping flat, then foaming in a foaming furnace, and obtaining the yoga mat capable of releasing negative oxygen ions. The negative ion powder is ball-milled into superfine particles with the foaming agent, the superfine particles are easily agglomerated, the two kinds of agglomerates are agglomerated together, the dispersibility of the agglomerates in the PVC resin is improved by modification with the plasticizer, the fine mixed particles with a suitable particle size are formed by ball-milling and scattering, the fine and dense cells are obtained, after foaming, the negative ion powder is on the inner wall of the cells, can better contact with air, and is convenient for releasing negative oxygen ions.

Description

Technical Field

[0001] This invention relates to the field of yoga mat technology, and in particular to a yoga mat that can release negative oxygen ions and its preparation method. Background Technology

[0002] Yoga mats are commonly used in yoga practice, providing cushioning and protection for practitioners. To enhance functionality and improve user experience, existing technologies often add functional ingredients to yoga mats, such as mugwort, far-infrared stones, anti-mildew and antibacterial agents, and negative ion powder. For example, Chinese invention patent application CN2022211606433.2 discloses a yoga mat that sustainably releases negative oxygen ions by adding nano-negative ion powder to the raw materials. However, in this method, the nano-negative ion powder is directly added to the slurry during manufacturing. After foaming, only a portion of the negative ion powder is on the surface of the mat; most is embedded within the foam. The embedded powder has limited contact with air, resulting in poor negative ion release. Furthermore, the small particle size of the nano-negative ion powder makes it prone to agglomeration, leading to poor dispersion within the mat and hindering its effectiveness.

[0003] It is evident that existing technologies still need improvement and enhancement. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this invention is to provide a yoga mat that can release negative oxygen ions and a method for preparing the same, in order to solve the defect that the existing yoga mats containing negative ion powder have poor negative oxygen ion release effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A method for preparing a yoga mat that can release negative oxygen ions, wherein the raw materials for preparing the yoga mat include: PVC paste resin powder, plasticizer, stabilizer, filler, foaming agent and negative ion powder;

[0007] The method includes the following steps:

[0008] Step 1: Mix the foaming agent and negative ion powder and ball mill them into ultrafine particles. Then soak them in plasticizer. After soaking, ball mill them again to obtain fine mixed particles.

[0009] Step 2: Mix the PVC paste resin powder, plasticizer, stabilizer, filler and fine mixed particles until the viscosity of the slurry meets the requirements, then stop mixing to obtain the mixed slurry.

[0010] Step 3: Apply the mixed slurry onto the mesh fabric, smooth it out, and then foam it in a foaming oven to obtain a yoga mat that can release negative oxygen ions.

[0011] In the method for preparing a yoga mat that can release negative oxygen ions, in step one, the particle size of the ultrafine mixed particles is 1500-3000 mesh.

[0012] In the method for preparing a yoga mat that can release negative oxygen ions, the negative ion powder includes at least one of tourmaline powder, cerium oxide powder, titanium dioxide powder, and thorium oxide.

[0013] In the method for preparing a yoga mat that can release negative oxygen ions, in step two, the viscosity of the mixed slurry is greater than or equal to 40000 mPa·s.

[0014] In the method for preparing the yoga mat that can release negative oxygen ions, the raw materials for preparing the yoga mat by weight fraction include: 100 parts of PVC resin powder, 80-90 parts of plasticizer, 2-3 parts of stabilizer, 80-120 parts of filler, 10-12 parts of foaming agent, and 0.5-2 parts of negative ion powder.

[0015] In the method for preparing a yoga mat that can release negative oxygen ions, step two also involves adding 0.05 to 0.1 parts of an antibacterial agent.

[0016] In the method for preparing a yoga mat that releases negative oxygen ions, the plasticizer is diisononyl phthalate or diisooctyl cyclohexane-1,2-dicarboxylate, or a combination of both.

[0017] In the method for preparing a yoga mat that can release negative oxygen ions, the PVC paste resin powder is composed of a first PVC paste resin powder and a second PVC paste resin powder, wherein the degree of polymerization of the first PVC paste resin powder is 900-1000 and the degree of polymerization of the second PVC paste resin powder is 1200-1300.

[0018] A yoga mat that releases negative oxygen ions is prepared by the preparation method described above.

[0019] Beneficial effects:

[0020] This invention provides a method for preparing a yoga mat that can release negative oxygen ions. The method involves ball milling negative ion powder and a foaming agent into ultrafine particles. Taking advantage of the ease with which ultrafine particles agglomerate, the two are brought together. Then, a plasticizer is used to modify the powder, improving its dispersibility in PVC resin. The mixture is then further ball-milled to form fine mixed particles of suitable particle size with dense pores. After foaming, the negative ion powder is located on the inner wall of the pores, allowing for better contact with air and facilitating the release of negative oxygen ions. Attached Figure Description

[0021] Figure 1 The flowchart illustrates the method for preparing a yoga mat that releases negative oxygen ions, as provided by this invention. Detailed Implementation

[0022] This invention provides a yoga mat capable of releasing negative oxygen ions and a method for preparing the same. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the following embodiments are provided to further illustrate the invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0023] Please see Figure 1 This invention provides a method for preparing a yoga mat that can release negative oxygen ions. The raw materials for preparing the yoga mat include: PVC paste resin powder, plasticizer, stabilizer, filler, foaming agent and negative ion powder. The negative ion powder can react with air and water to release negative oxygen ions, which have the effect of relieving fatigue and purifying the air.

[0024] The method includes the following steps:

[0025] Step 1: Mix the foaming agent and negative ion powder and ball mill them into ultrafine particles. Then soak them in plasticizer. After soaking, ball mill them again to obtain fine mixed particles.

[0026] Step 2: Mix the PVC paste resin powder, plasticizer, stabilizer, filler and fine mixed particles until the viscosity of the slurry meets the requirements, then stop mixing to obtain the mixed slurry.

[0027] Step 3: Apply the mixed slurry onto the mesh fabric, smooth it out, and then foam it in a foaming oven to obtain a yoga mat that can release negative oxygen ions.

[0028] In this preparation method, after mixing negative ion powder and foaming agent, the mixture is first ball-milled into ultrafine particles. Due to the extremely small particle size of the ultrafine particles, they are prone to agglomeration, forming microparticles containing both ultrafine negative ion powder and foaming agent powder. These microparticles have relatively large particle sizes, up to 100 micrometers in diameter, and are difficult to disperse by ball milling (because they will agglomerate again after dispersion). Then, these microparticles are soaked in a plasticizer to allow the plasticizer to fully penetrate into the interior of the microparticles, which is equivalent to surface modification of the ultrafine negative ion powder and ultrafine foaming agent powder inside the microparticles. Then, the microparticles are dispersed by ball milling to deagglomerate them into fine particles. These fine particles are small agglomerated particles of ultrafine negative ion powder and foaming agent. After being dispersed, they will not agglomerate again due to the action of the plasticizer. Therefore, fine mixed particles containing negative ion powder and foaming agent can be obtained. When these fine mixed particles are added to the slurry, the plasticizer impregnation on their surface ensures good dispersibility and compatibility. Furthermore, the foaming agent in the fine mixed particles, after foaming, allows most of the negative ion powder to remain within the cell walls or pores, thus providing more opportunities for negative ions to contact air and water, resulting in better release of negative oxygen ions. Yoga mats prepared using this method exhibit superior negative oxygen ion release capabilities, providing a better user experience.

[0029] In order to enable the negative ion powder to agglomerate with the foaming agent, in step one, after impregnation, when spreading by ball milling, it is not necessary to disperse the particles too much. In a preferred embodiment, the particle size of the fine mixed particles is 1500-3000 mesh by ball milling. The fine mixed particles of this size can enable the negative ion powder to agglomerate with the foaming agent. After foaming, most of the negative ion powder can be placed in the pores, and the pores formed after foaming are of moderate size, fine and dense, and have good elasticity.

[0030] In a preferred embodiment, the raw materials for preparing the yoga mat, by weight fraction, include: 100 parts PVC resin powder, 80-90 parts plasticizer, 2-3 parts stabilizer, 80-120 parts filler, 10-12 parts foaming agent, and 0.5-2 parts negative ion powder. The PVC resin powder comprises a first PVC paste resin powder and a second PVC paste resin powder, which have different degrees of polymerization. Using two PVC paste resin powders with different degrees of polymerization in combination facilitates adjustment of the slurry viscosity and also facilitates adjustment of the mat's wear and scratch resistance. Preferably, the first PVC paste resin powder has a degree of polymerization of 900-1000, and the second PVC paste resin powder has a degree of polymerization of 1200-1300. The plasticizer includes diisononyl phthalate or diisooctyl cyclohexane-1,2-dicarboxylate, or a combination of both, preferably a combination of both, which provides good plasticizing effect, does not precipitate, and is more environmentally friendly. The stabilizer is a calcium-zinc stabilizer. The filler includes lightweight calcium carbonate, talc, and silica powder, which can improve the mechanical strength of the pad. The foaming agent is AC foaming agent. The negative ion powder is at least one of tourmaline powder, cerium oxide powder, titanium dioxide powder, and thorium oxide, preferably a combination of multiple types, such as a combination of tourmaline powder with cerium oxide powder and titanium dioxide powder, or a combination of tourmaline powder with titanium dioxide powder and thorium oxide, or a combination of tourmaline powder, cerium oxide powder, titanium dioxide powder, and thorium oxide, etc., or other oxides capable of generating negative oxygen ions. A combination of tourmaline powder and titanium dioxide powder is preferred, as the raw materials are readily available and the cost is low.

[0031] Since sweat drips from the pad during use, and sweat can easily breed bacteria, in a preferred embodiment, 0.05 to 0.1 parts of an antibacterial agent, such as nano-silver antibacterial agent, are added in step two, which has a better anti-mildew and antibacterial effect.

[0032] In order to ensure that the formed slurry can adhere well during application and is easy to apply, resulting in a uniform thickness of the pad, in step two, the viscosity of the mixed slurry is greater than or equal to 40,000 mPa·s. In specific implementation, this can be achieved by adjusting the amount of plasticizer added, adjusting the ratio of the first PVC paste resin powder to the second PVC paste resin powder, or adding a tackifier to make the slurry viscosity greater than or equal to 40,000 mPa·s.

[0033] The second aspect of the present invention provides a yoga mat that can release negative oxygen ions. The yoga mat is prepared by the preparation method described above and has a good effect on releasing negative oxygen ions.

[0034] To further illustrate the preparation method of the yoga mat that can release negative oxygen ions provided by the present invention, the following embodiments are provided.

[0035] Example 1

[0036] A method for preparing a yoga mat that can release negative oxygen ions, wherein the raw materials for preparing the yoga mat are, by weight, 100 parts of PVC resin powder (1:1 first PVC paste resin powder and second PVC paste resin powder), 85 parts of plasticizer (1:1 diisononyl phthalate or diisooctyl cyclohexane-1,2-dicarboxylate), 2.5 parts of stabilizer, 90 parts of filler, 11 parts of foaming agent, 1 part of negative ion powder (9:1 tourmaline powder and titanium dioxide powder), and 0.1 parts of antibacterial agent.

[0037] The preparation steps are as follows:

[0038] Step 1: Mix the foaming agent and negative ion powder and ball mill them into ultrafine particles. Then soak them in plasticizer for 24 hours. After soaking, ball mill them until the average particle size is 2000 mesh to obtain fine mixed particles.

[0039] Step 2: Mix the PVC paste resin powder, plasticizer, stabilizer, filler and fine mixed particles until the viscosity of the slurry is 40000 mPa.s, then stop mixing to obtain the mixed slurry.

[0040] Step 3: Apply the mixed slurry onto the mesh fabric, smooth it out, and then foam it at 195-220℃ (zone 1: 195-200℃, zone 2: 215-220℃, zone 3: 215-220℃, zone 4: 90℃ and below) to obtain a yoga mat that can release negative oxygen ions.

[0041] Example 2

[0042] A method for preparing a yoga mat that can release negative oxygen ions is basically the same as that in Example 1, except that in step one, the average particle size of the fine mixed particles is 1500 mesh.

[0043] Example 3

[0044] A method for preparing a yoga mat that can release negative oxygen ions is basically the same as that in Example 1, except that in step one, the average particle size of the fine mixed particles is 3000 mesh.

[0045] Example 4

[0046] A method for preparing a yoga mat that can release negative oxygen ions is basically the same as that in Example 1, except that: by weight, the raw materials for preparing the yoga mat are: 100 parts of PVC resin powder, 80 parts of plasticizer, 2 parts of stabilizer, 120 parts of filler, 10 parts of foaming agent, 2 parts of negative ion powder, and 0.05 parts of antibacterial agent.

[0047] Example 5

[0048] A method for preparing a yoga mat that can release negative oxygen ions is basically the same as that in Example 1, except that: by weight, the raw materials for preparing the yoga mat are: 100 parts of PVC resin powder, 90 parts of plasticizer, 3 parts of stabilizer, 80 parts of filler, 12 parts of foaming agent, 0.5 parts of negative ion powder, and 0.1 parts of antibacterial agent.

[0049] Comparative Example 1

[0050] A method for preparing a yoga mat that can release negative oxygen ions is disclosed. The raw material composition for preparing the yoga mat is the same as that in Example 1. The preparation steps are as follows: PVC paste resin powder, plasticizer, stabilizer, filler, foaming agent, and negative ion powder (wherein the average particle size of the foaming agent and negative ion powder is 2000 mesh) are stirred and mixed. When the viscosity of the slurry is 40000 mPa·s, stirring is stopped to obtain a mixed slurry. The mixed slurry is coated onto a mesh cloth, smoothed, and then foamed at 195-220℃ (zone 1: 195-200℃, zone 2: 215-220℃, zone 3: 215-220℃, zone 4: 90℃ and below) to obtain a yoga mat that can release negative oxygen ions.

[0051] Comparative Example 2

[0052] A method for preparing a yoga mat that can release negative oxygen ions is disclosed. The raw material composition for preparing the yoga mat is the same as that in Example 1. The preparation steps are as follows: the foaming agent and negative ion powder are ball-milled into an ultrafine particle mixture. The PVC paste resin powder, plasticizer, stabilizer, filler and ultrafine particle mixture are stirred and mixed evenly. When the viscosity of the slurry is 40000 mPa.s, stirring is stopped to obtain a mixed slurry. The mixed slurry is coated onto a mesh cloth, smoothed, and then foamed at 195-220℃ (zone 1 195~200℃, zone 2 215~220℃, zone 3 215~220℃, zone 4 90℃ and below) to obtain a yoga mat that can release negative oxygen ions.

[0053] Comparative Example 3

[0054] A method for preparing a yoga mat that can release negative oxygen ions is basically the same as that in Example 1 in terms of raw materials and preparation steps. The difference is that in step one, after soaking, ball milling is not performed.

[0055] The negative oxygen ion release of the yoga mats prepared in Examples 1-5 and Comparative Examples 1-3 was tested. During the test, a yoga mat with an area of ​​50cm x 50cm (the thickness of the mat body is 6mm) was cut and placed in a 50cm x 50cm x 50cm closed space. After 24 hours, the number of negative oxygen ions in the space was measured by a negative oxygen ion detector. The specific test results are shown in Table 1.

[0056]

[0057]

[0058] Table 1 shows that the negative oxygen ion release amounts in Examples 1-5 are all relatively high, indicating that the preparation method allows the negative ion powder to better contact the air, which is more conducive to the release of negative oxygen ions. Furthermore, the release amount increases with the increase in the amount of negative ion powder added. Examples 1-3 show that when the particle size of the fine mixed particles exceeds 3000 mesh, the release amount of negative oxygen ions does not increase. It is possible that if the particles are ground too finely, it may actually disrupt the aggregation of the negative ion powder and the foaming agent.

[0059] As can be seen from Comparative Example 1, the number of negative oxygen ions is more than a thousand fewer than that in Example 1. The possible reason is that the negative ion powder and foaming agent did not agglomerate during preparation. Therefore, the number of negative ion powders in the foam cells after foaming is not large, resulting in insufficient contact with air.

[0060] As can be seen from Comparative Example 2, although both the negative ion powder and the foaming agent were ground into ultrafine particles, they could not agglomerate because they were ball-milled separately. Therefore, the amount of negative oxygen ions released was also worse than that of Example 1.

[0061] In Comparative Example 3, because the fine mixed particles were not dispersed after soaking in step one, the particle size of the fine mixed particles was larger, resulting in poor dispersibility of the fine mixed particles. Specifically, this would affect the dispersibility of the negative ion powder. Therefore, even though the negative ions were in the pores, the amount of negative oxygen ions released would still be lower than that in Example 1.

[0062] Therefore, it is crucial to agglomerate the negative ion powder and foaming agent into fine particles during preparation, as this directly affects the dispersibility of the negative ion powder and whether it is located within the pores. This application ball-mills the negative ion powder and foaming agent into ultrafine particles, taking advantage of the ease with which ultrafine particles agglomerate, and then uses a plasticizer to modify them, improving their dispersibility in PVC resin. After ball milling and scattering, fine mixed particles of suitable particle size are formed, resulting in dense pores. After foaming, the negative ion powder is located on the inner wall of the pores, allowing for better contact with air and facilitating the release of negative oxygen ions.

[0063] It is understood that those skilled in the art can make equivalent substitutions or modifications to the technical solution and inventive concept of the present invention, and all such substitutions or modifications should fall within the protection scope of the appended claims.

Claims

1. A method for preparing a yoga mat capable of releasing negative oxygen ions, wherein the raw materials for preparing the yoga mat include: PVC paste resin powder, plasticizer, stabilizer, filler, foaming agent, and negative ion powder; characterized in that, The method includes the following steps: Step 1: Mix the foaming agent and negative ion powder and ball mill them into ultrafine particles. Then soak them in plasticizer. After soaking, ball mill them again to obtain fine mixed particles with a particle size of 1500-3000 mesh. Step 2: Mix the PVC paste resin powder, plasticizer, stabilizer, filler and fine mixed particles until the viscosity of the slurry meets the requirements, then stop mixing to obtain the mixed slurry. Step 3: Apply the mixed slurry onto the mesh fabric, smooth it out, and then foam it in a foaming oven to obtain a yoga mat that can release negative oxygen ions.

2. The method for preparing a yoga mat capable of releasing negative oxygen ions according to claim 1, characterized in that, The negative ion powder includes at least one of the following: tourmaline powder, cerium oxide powder, titanium dioxide powder, and thorium oxide.

3. The method for preparing a yoga mat capable of releasing negative oxygen ions according to claim 1, characterized in that, In step two, the viscosity of the mixed slurry is greater than or equal to 40,000 mPa·s.

4. The method for preparing a yoga mat capable of releasing negative oxygen ions according to claim 1, characterized in that, The raw materials for preparing the yoga mat, by weight fraction, include: 100 parts PVC resin powder, 80-90 parts plasticizer, 2-3 parts stabilizer, 80-120 parts filler, 10-12 parts foaming agent, and 0.5-2 parts negative ion powder.

5. The method for preparing a yoga mat capable of releasing negative oxygen ions according to claim 4, characterized in that, In step two, 0.05 to 0.1 parts of antibacterial agent are also added.

6. The method for preparing a yoga mat capable of releasing negative oxygen ions according to claim 4, characterized in that, The plasticizer is diisononyl phthalate or diisooctyl cyclohexane-1,2-dicarboxylate, or a combination of both.

7. The method for preparing a yoga mat capable of releasing negative oxygen ions according to claim 4, characterized in that, The PVC paste resin powder is composed of a first PVC paste resin powder and a second PVC paste resin powder, wherein the degree of polymerization of the first PVC paste resin powder is 900-1000 and the degree of polymerization of the second PVC paste resin powder is 1200-1300.

8. A yoga mat that releases negative oxygen ions, characterized in that, It is prepared by the preparation method as described in any one of claims 1-7.

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