Anti-sticking agent for self-sealing rubber layer of self-sealing tire, preparation method of anti-sticking agent, self-sealing tire and anti-sticking testing method

Abstract

The invention relates to an anti-sticking agent for a self-sealing rubber layer of a self-sealing tire, a preparation method of the anti-sticking agent, the self-sealing tire and an anti-sticking test method. The anti-sticking agent for the self-sealing rubber layer of the self-sealing tire is prepared from the following components in percentage by weight: 5-15% of polysiloxane, 80-93% of a solvent and 1-4% of a surfactant. The anti-sticking agent for the self-sealing rubber layer of the self-sealing tire, provided by the invention, has a good anti-sticking effect, can achieve the effect of not adhering dust, mosquitoes and other sundries when being used for the self-sealing rubber layer of the self-sealing tire, and solves the problems that the self-sealing rubber layer on the inner surface of the tire is easy to adhere dust and winged insects due to relatively high viscosity of the self-sealing rubber layer of the self-sealing tire, and the service life of the tire is prolonged. The appearance and the product quality are influenced; the anti-sticking agent is environment-friendly in material, wide in source and low in cost.

Description

Technical Field

[0001] The invention relates to the technical field of self-sealing tires, and in particular to an anti-sticking agent for a self-sealing rubber layer of a self-sealing tire, a preparation method thereof, a self-sealing tire, and an anti-sticking test method. Background Art

[0002] The existing self-sealing tire is formed by coating a layer of self-sealing adhesive on the inner surface of an ordinary radial tire. When the self-sealing tire is penetrated by a sharp object and causes air leakage, the self-sealing adhesive can quickly flow into the wound and automatically seal it to prevent the tire from leaking. Since the self-sealing adhesive layer is sticky and exposed to the air, it is easily contaminated by external debris (dust, etc.). At the same time, when stored in a warehouse or during transportation, some insects such as mosquitoes and cockroaches will be stuck and unable to fly away when they come into contact with the sealant of the self-sealing tire, resulting in a large number of mosquito corpses remaining on the self-sealing tire, affecting product quality and appearance.

[0003] Therefore, after the self-sealing tire is manufactured, it is necessary to perform additional protective treatment during storage and transportation, or the surface of the tire body is fully covered with plastic film or wrapping paper to isolate the self-sealing layer from external debris (dust, mosquitoes, etc.), which will increase the cost of process control. At the same time, during the actual transportation and storage of the tire, there will be problems of isolation failure caused by film damage. The patent with publication number CN219256966U discloses a self-sealing tire, which discloses the use of a plastic flame-retardant particle layer to be coated on one side of the inner surface of the self-sealing layer away from the tire body to isolate external debris. However, it is difficult to achieve a uniform distribution of the particle layer when coating the particle layer, resulting in dust adhesion in some areas. For this reason, how to reduce the viscosity of the self-sealing surface on the inner surface of the self-sealing tire has become a problem that needs to be studied. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide an anti-sticking agent for the self-sealing rubber layer of a self-sealing tire and a preparation method thereof, a self-sealing tire, and an anti-sticking testing method, which solves the problem that the self-sealing rubber layer on the inner surface of the self-sealing tire is easily adhered to dust and flying insects due to its strong viscosity, seriously affecting the appearance.

[0005] To achieve the above object, the present invention adopts the following technical solutions: The present invention first provides an anti-sticking agent for a self-sealing rubber layer of a self-sealing tire, which is prepared from the following components in percentage by weight: 5%-15% polysiloxane, 80%-93% solvent, and 1%-4% surfactant.

[0006] As a further improvement of the above scheme of the present invention, the surfactant is selected from at least one of nonylphenol polyoxyethylene ether, propylene glycol dihydroxypropane, isooctyl alcohol polyoxyethylene ether, tridecyl alcohol polyether, polyethylene glycol oleate, methyl allyl alcohol, and polyoxyethylene ether.

[0007] As a further improvement of the above solution of the present invention, the solvent is deionized water.

[0008] The present invention also provides a method for preparing the anti-sticking agent for the self-sealing rubber layer of the self-sealing tire as described above, which comprises the following steps: adding polysiloxane, solvent, and surfactant into a stirrer in proportion, fully dispersing them to form a uniform and stable solution, and obtaining the anti-sticking agent for the self-sealing rubber layer of the self-sealing tire.

[0009] The present invention also provides a use of the above-mentioned anti-sticking agent on the self-sealing rubber layer of a self-sealing tire.

[0010] As a further improvement of the above solution of the present invention, it includes the following steps: spraying a layer of the anti-sticking agent on the surface of the self-sealing rubber layer of the self-sealing tire and leaving it to stand at room temperature.

[0011] As a further improvement of the above solution of the present invention, 15-30g of the anti-sticking agent is sprayed on a self-sealing tire. If the weight of the anti-sticking agent is less than 15g, the anti-sticking effect cannot be achieved; if the weight of the anti-sticking agent is more than 30g, the cost will be increased, and the actual production spraying time and the parking waiting time of the tire after spraying will be increased (the purpose of parking is to allow the water in the anti-sticking agent to completely volatilize), which will reduce production efficiency.

[0012] The present invention also provides a self-sealing tire, which includes a tire body and a self-sealing rubber layer arranged on the inner surface of the tire body, and also includes a self-sealing rubber anti-sticking layer, which is formed by spraying a layer of the anti-sticking agent as described above on the surface of the self-sealing rubber layer.

[0013] As a further improvement of the above solution of the present invention, during spraying, the amount of the anti-sticking agent used is 15-30g.

[0014] The present invention also provides an anti-sticking test method, which is used to test the anti-sticking performance of the self-sealing adhesive anti-sticking layer of the self-sealing tire as described above, and comprises the following steps: 2 , a glass container with a mass of 184g is connected to the top of a hanging rope, and the hanging rope is connected to a tensioner. The glass container is slowly placed and the bottom of the glass container is in contact with the surface of the self-sealing adhesive anti-sticking layer. After staying on the surface of the self-sealing adhesive anti-sticking layer for 20-30s, the tensioner is lifted at a uniform speed to separate the glass container from the self-sealing adhesive anti-sticking layer. The reading of the tensioner is read. When the reading of the tensioner is ≤15N, it is determined that the self-sealing adhesive anti-sticking layer meets the foreign body anti-sticking standard.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The anti-sticking agent for the self-sealing rubber layer of the self-sealing tire provided by the present invention has a good anti-sticking effect. When used for the self-sealing rubber layer of the self-sealing tire, it can achieve the effect of not adhering to dust, mosquitoes and other debris, solving the problem that the self-sealing rubber layer of the current self-sealing tire has a strong viscosity, which makes the self-sealing rubber layer on the inner surface of the tire easily adhere to dust and flying insects, affecting the appearance and product quality. In addition, the anti-sticking agent material of the present invention is environmentally friendly, widely available, and low in cost.

[0016] 2. When the present invention is used for the anti-sticking of the self-sealing rubber layer of a self-sealing tire, it only needs to spray a layer of the anti-sticking agent of the present invention on the surface of the self-sealing rubber layer and spray 15-30g of the anti-sticking agent on a single self-sealing tire, so that dust, mosquitoes and other debris are not adhered, and the anti-sticking treatment process is simple.

[0017] 3. When the anti-sticking agent of the present invention is used to form a self-sealing anti-sticking layer on the surface of the self-sealing layer of the self-sealing tire, through the anti-sticking test of the self-sealing anti-sticking layer, when the tensor reading is ≤15N, it can effectively prevent foreign objects such as dust and mosquitoes from adhering, so the tensor reading ≤15N is defined as the anti-sticking standard of the self-sealing anti-sticking layer.

[0018] 4. The present invention also provides a method and standard for testing the viscosity of the self-sealing adhesive layer, which solves the problem of how to effectively test the surface viscosity of the self-sealing adhesive, combines the means of isolating impurities with the method and standard for testing the surface viscosity of the self-sealing adhesive, and forms a set of standard methods for testing the inner surface viscosity of the self-sealing adhesive of self-sealing tires. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a self-sealing tire provided by the present invention; Figure 2 It is a self-made double roller frame of the present invention.

[0020] Figure numerals: 1. tire body; 2. self-sealing rubber layer; 3. self-sealing anti-sticking layer; 4. self-sealing tire; 5. metal double rollers; 6. metal frame. DETAILED DESCRIPTION

[0021] For ease of understanding of the present invention, the present invention will be described more fully below in conjunction with specific embodiments. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0023] Example 1 This embodiment provides a self-sealing tire, which includes a tire body, a self-sealing adhesive layer disposed on the inner surface of the tire body, and a self-sealing adhesive anti-sticking layer disposed on the surface of the self-sealing adhesive layer. In this embodiment, the self-sealing adhesive anti-sticking layer is formed by spraying a layer of anti-sticking agent on the surface of the self-sealing adhesive layer.

[0024] The self-sealing tire manufacturing method of this embodiment includes the following steps: placing the self-sealing tire on a self-made double-roller frame as shown in the figure (the rollers can drive the self-sealing tire to rotate), connecting the spray gun and the air pump, injecting the anti-sticking agent into the spray gun, turning on the air pump, and when the air pump pointer reaches 2Bar, aiming the spray gun at the surface of the self-sealing glue inside the self-sealing tire for spraying, and at the same time rotating the self-sealing tire at a constant speed for one circle. After spraying, the amount of anti-sticking agent used for a self-sealing tire is 20g; placing the sprayed tire at room temperature for 2 hours, waiting for the water to evaporate, and the construction is completed.

[0025] The anti-sticking agent of this embodiment includes the following components in weight percentage: 92.7% deionized water, 6% polysiloxane, and 1.3% polyethylene glycol oleate; the preparation method of the anti-sticking agent includes the following steps: adding polysiloxane, solvent, and polyethylene glycol oleate into a stirrer in proportion, fully dispersing them to form a uniform and stable solution.

[0026] Example 2 This embodiment adopts the same implementation method as Example 1, and the difference from Example 1 is that the anti-sticking agent of this embodiment includes the following components in weight percentage: 90.3% deionized water, 8% polysiloxane, and 1.7% polyethylene glycol oleate; the amount of anti-sticking agent used for a self-sealing tire is 24g.

[0027] Example 3 This embodiment adopts the same implementation as that of Embodiment 1, but differs from Embodiment 1 in that the anti-sticking agent of this embodiment comprises the following components in weight percentage: 90.3% deionized water, 8% polysiloxane, and 1.7% polyethylene glycol oleate.

[0028] Example 4 This embodiment adopts the same implementation as that of Embodiment 1, but differs from Embodiment 1 in that the anti-sticking agent of this embodiment comprises the following components in weight percentage: 85.5% deionized water, 12% polysiloxane, and 2.5% polyethylene glycol oleate.

[0029] Example 5 This embodiment adopts the same implementation as that of Embodiment 1, but differs from Embodiment 1 in that the anti-sticking agent of this embodiment comprises the following components in weight percentage: 81.2% deionized water, 15% polysiloxane, and 3.8% polyethylene glycol oleate.

[0030] Example 6 This embodiment adopts the same implementation as that of embodiment 4, and is different from embodiment 1 in that the amount of anti-sticking agent used for one self-sealing tire is 18 g.

[0031] Example 7 This embodiment adopts the same implementation as that of Embodiment 4, and is different from that of Embodiment 1 in that the amount of anti-sticking agent used for one self-sealing tire is 24 g.

[0032] Example 8 This embodiment adopts the same implementation as that of embodiment 4, and is different from embodiment 1 in that the amount of anti-sticking agent used for one self-sealing tire is 28 g.

[0033] Comparative Example 1 This comparative example uses a common self-sealing tire on the market that is not sprayed with an anti-sticking agent.

[0034] Comparative Example 2 This comparative example adopts the same implementation method as Example 1, and the difference from Example 1 is that the anti-sticking agent of this comparative example includes the following components in weight percentage: 94.2% deionized water, 4.9% polysiloxane, and 0.9% polyethylene glycol oleate; the amount of anti-sticking agent used for a self-sealing tire is 24g.

[0035] Comparative Example 3 This comparative example adopts the same implementation as Example 1, and the difference from Example 1 is that the amount of anti-sticking agent used for one self-sealing tire is 14g.

[0036] Comparative Example 4 This comparative example adopts the same implementation as Example 1, and the difference from Example 1 is that the anti-sticking agent of this comparative example includes the following components in weight percentage: 95.3% deionized water, 4% polysiloxane, and 0.7% polyethylene glycol oleate.

[0037] Comparative Example 5 This comparative example adopts the same implementation as Example 1, and the difference from Example 1 is that the anti-sticking agent of this comparative example includes the following components in weight percentage: 94.3% deionized water, 4.8% polysiloxane, and 0.9% polyethylene glycol oleate.

[0038] Comparative Example 6 This comparative example adopts the same implementation as Example 4, and is different from Example 1 in that the amount of anti-sticking agent used for one self-sealing tire is 8 g.

[0039] Comparative Example 7 This comparative example adopts the same implementation as Example 4, and is different from Example 1 in that the amount of anti-sticking agent used for one self-sealing tire is 14 g.

[0040] Comparative Example 8 This comparative example adopts the same implementation as Example 4, and is different from Example 1 in that the amount of anti-sticking agent used for one self-sealing tire is 32 g.

[0041] Test Case (1) Anti-stick performance test The anti-sticking performance of the self-sealing tires of the above embodiments 1-2 and comparative examples 1-3 was tested respectively: ① The bottom surface area was 10CM 2 1. A flat-bottom flask with a mass of 184g is connected to a hanging rope at the top, which is connected to a tensioner. The flat-bottom flask is slowly placed so that the bottom of the flat-bottom flask contacts the inner surface of the self-sealing tire. After staying on the inner surface of the self-sealing tire for 30 seconds, the tensioner is lifted at a constant speed to separate the flat-bottom flask from the inner surface of the self-sealing tire, and the reading of the tensioner is read; 2. The scraps of paper are freely dropped onto the surface of the self-sealing rubber, and the adhesion of dust is simulated by the difficulty of cleaning the scraps of paper on the surface of the self-sealing rubber; 3. The self-sealing tire sprayed with an anti-sticking agent is placed in the grass (an area with many mosquitoes) for 2 weeks, and the adhesion of mosquitoes on the surface of the self-sealing rubber inside the self-sealing tire is regularly observed. The test results are shown in Table 1.

[0042] Table 1

[0043] From the results in Table 1, it can be seen that when the viscosity of the self-sealing adhesive surface is ≤15N, the adhesive surface is non-sticky, paper scraps are easy to clean, and the number of mosquitoes attached is small; therefore, it can be formulated that the bottom area is 10CM 2 When tested with a flat-bottom flask with a mass of 184g, the anti-sticking standard for the surface of the self-sealing adhesive inside the tire is that the viscosity of the anti-sticking layer of the self-sealing adhesive is ≤15N.

[0044] (2) Through the above (1) anti-sticking performance test experiment, an anti-sticking standard that meets the internal self-sealing adhesive anti-sticking layer of the tire is formulated, and an experimental study on the anti-sticking agent formulation is conducted based on this standard. The purpose is to study the optimal anti-sticking agent experimental formulation, which is as follows: The anti-sticking performance of the self-sealing tires of the above Example 1, Examples 3-5, Comparative Example 1 and Comparative Example 4-5 is tested respectively: ① The bottom surface area is 10CM 21. The top of the tester is connected to a rope with a mass of 184g. The rope is connected to the tensioner. A flat-bottomed flask is slowly placed and the bottom of the flat-bottomed flask is in contact with the inner surface of the self-sealing tire. After staying on the inner surface of the self-sealing tire for 30 seconds, the tensioner is lifted at a constant speed to separate the flat-bottomed flask from the inner surface of the self-sealing tire and read the reading of the tensioner. 2. The scraps of paper are freely dropped onto the surface of the self-sealing rubber. The adhesion of dust is simulated by the difficulty of cleaning the scraps of paper on the surface of the self-sealing rubber. 3. The self-sealing tire sprayed with anti-sticking agent is placed in the grass (an area with many mosquitoes) for 2 weeks, and the adhesion of mosquitoes on the surface of the self-sealing rubber inside the self-sealing tire is regularly observed. The test results are shown in Table 2.

[0045] Table 2

[0046] From the results in Table 2, it can be seen that: from the perspective of Example 1, Examples 3-5 and Comparative Example 1, by spraying the anti-sticking agent on the surface of the self-sealing glue inside the tire, the viscosity of the self-sealing glue surface can be reduced to a certain extent, and the higher the concentration of the anti-sticking agent, the better the anti-sticking effect; from the perspective of Example 1, Examples 3-5 and Comparative Example 4 and Comparative Example 5, the higher the concentration of the anti-sticking agent, the more obvious the anti-sticking effect, and the better the mosquito adhesion; it is worth noting that the anti-sticking isolation effect of Example 5 is compared with that of Example 4. Example 5 increases the concentration of the anti-sticking agent (active ingredient), but the improvement of the anti-sticking effect is limited, which shows that when the concentration of the anti-sticking agent reaches a certain level, its effect tends to be saturated.

[0047] In summary, from the experimental results, the anti-sticking agent formula used in Example 4 is easy to clean paper scraps, has low stickiness to the touch, and has good mosquito adhesion. The force value tested by the viscosity testing device is 13.4N, which meets the anti-sticking standard of the self-sealing surface inside the tire; therefore, it can be determined that the anti-sticking agent components: 85.5% solvent, 12% polysiloxane, and 2.5% surfactant are the best solution.

[0048] (3) In the experimental results of (2) above, the anti-sticking agent component: 85.5% solvent, 12% polysiloxane, and 2.5% surfactant is the best solution. This component is now used to conduct a spraying experiment on a self-sealing tire to find the appropriate quality conditions of the anti-sticking agent component, as follows: The anti-sticking performance of the self-sealing tires of Examples 6-8, Comparative Example 1, and Comparative Example 6-8 above is tested respectively: ① The bottom surface area is 10CM 21. The top of the tester is connected to a rope with a mass of 184g. The rope is connected to the tensioner. A flat-bottomed flask is slowly placed and the bottom of the flat-bottomed flask is in contact with the inner surface of the self-sealing tire. After staying on the inner surface of the self-sealing tire for 30 seconds, the tensioner is lifted at a constant speed to separate the flat-bottomed flask from the inner surface of the self-sealing tire and read the reading of the tensioner. 2. The scraps of paper are freely dropped onto the surface of the self-sealing rubber. The adhesion of dust is simulated by the difficulty of cleaning the scraps of paper on the surface of the self-sealing rubber. 3. The self-sealing tire sprayed with anti-sticking agent is placed in the grass (an area with many mosquitoes) for 2 weeks, and the adhesion of mosquitoes on the surface of the self-sealing rubber inside the self-sealing tire is regularly observed. The test results are shown in Table 3.

[0049] Table 3

[0050] From the results in Table 3, it can be seen that: from the viscosity values ​​of the above Examples 6-8, Comparative Example 1 and Comparative Examples 6-8, the more the amount of anti-sticking agent used, the lower the viscosity of the self-sealing adhesive surface, the easier it is to clean paper scraps, and the fewer mosquitoes adhere to it; among them, compared with Example 8, Comparative Example 8 increases the quality of the anti-sticking agent, but the improvement of the anti-sticking effect is limited, which shows that when the quality of the anti-sticking agent reaches a certain level, its effect tends to be saturated (it is speculated that when the amount of anti-sticking agent used is sufficient to cover the surface of the self-sealing adhesive, its viscosity has been fixed, and further increasing the anti-sticking agent on the surface has little effect on the viscosity test data); at the same time, cost issues need to be considered in actual production. When the effect has been achieved, the use of reagents should be reduced as much as possible to save costs. Therefore, it can be determined that the mass of the anti-sticking agent used for spraying one circle of the tire with an anti-sticking agent is 15g-30g / piece, which can achieve the effect of not adhering to dust, mosquitoes and other debris.

[0051] In actual production, the concentration and amount of anti-sticking agent used should be considered comprehensively: from a cost perspective, the lower the concentration (ratio with water) and the less the amount (mass of anti-sticking agent sprayed by spray gun), the lower the cost; from an anti-sticking perspective, spraying is required to prevent dust, mosquitoes and other debris from adhering.

[0052] Based on the above conditions and after experimental research, the anti-sticking agent components are used: solvent 80%-93%, polysiloxane 5%-15%, and surfactant 1%-4%; the mass of anti-sticking agent used for one circle of the tire when spraying the inside of the tire is 15g-30g / piece, which can achieve the effect of not adhering to dust, mosquitoes and other debris; if the mass of the anti-sticking agent is less than 15g, the anti-sticking effect cannot be achieved; if the anti-sticking mass is greater than 30g, the cost will be increased, and the actual production construction time and the parking waiting time of the tire after construction will be increased (the purpose of parking is to allow the moisture in the anti-sticking agent to completely evaporate), reducing production efficiency.

[0053] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An anti-sticking agent for a self-sealing rubber layer of a self-sealing tire, characterized in that: The invention is prepared from the following components in weight percentage: 5%-15% polysiloxane, 80%-93% solvent and 1%-4% surfactant.

2. The anti-sticking agent for the self-sealing rubber layer of the self-sealing tire according to claim 1, characterized in that: The surfactant is selected from at least one of nonylphenol polyoxyethylene ether, propylene glycol dihydroxypropane, isooctyl alcohol polyoxyethylene ether, tridecyl alcohol polyether, polyethylene glycol oleate, methyl allyl alcohol, and polyoxyethylene ether.

3. The anti-sticking agent for the self-sealing rubber layer of the self-sealing tire according to claim 1, characterized in that: The solvent is deionized water.

4. A method for preparing the anti-sticking agent for the self-sealing rubber layer of a self-sealing tire as claimed in any one of claims 1 to 3, characterized in that: It includes the following steps: Add polysiloxane, solvent and surfactant into a stirrer in proportion, fully disperse them to form a uniform and stable solution, and obtain the anti-sticking agent for the self-sealing rubber layer of the self-sealing tire.

5. Use of the anti-sticking agent according to any one of claims 1 to 3 on the self-sealing rubber layer of a self-sealing tire.

6. The use according to claim 5, characterized in that: It includes the following steps: A layer of the anti-sticking agent is sprayed on the surface of the self-sealing rubber layer of the self-sealing tire and left to stand at room temperature.

7. The use according to claim 6, characterized in that: A self-sealing tire is sprayed with 15-30 g of the anti-sticking agent.

8. A self-sealing tire, comprising a tire body and a self-sealing rubber layer arranged on the inner surface of the tire body, characterized in that: It also includes a self-sealing adhesive anti-sticking layer, which is formed by spraying a layer of anti-sticking agent as described in any one of claims 1 to 3 on the surface of the self-sealing adhesive layer.

9. The self-sealing tire according to claim 8, characterized in that: When spraying, the amount of the anti-sticking agent is 15-30g.

10. A method for testing anti-sticking, characterized in that: It is used to test the anti-sticking performance of the self-sealing adhesive anti-sticking layer of the self-sealing tire as claimed in claim 8 or 9, and comprises the following steps: 2 , a glass container with a mass of 184g is connected to the top of a hanging rope, and the hanging rope is connected to a tensioner. The glass container is slowly placed and the bottom of the glass container is in contact with the surface of the self-sealing adhesive anti-sticking layer. After staying on the surface of the self-sealing adhesive anti-sticking layer for 20-30s, the tensioner is lifted at a uniform speed to separate the glass container from the self-sealing adhesive anti-sticking layer. The reading of the tensioner is read. When the reading of the tensioner is ≤15N, it is determined that the self-sealing adhesive anti-sticking layer meets the foreign body anti-sticking standard.

Images