Sealing strip applied to frameless automobile

Abstract

The utility model relates to the field of automobile accessories, in particular to a sealing strip applied to a frameless automobile, which comprises a base material, a granular layer and a lubricating layer are arranged on the surface of the base material, and the lubricating layer is arranged on one side of the granular layer opposite to the surface of the base material. According to the sealing strip, the particle layer and the lubricating layer are arranged on the surface of the base material to form the sealing strip, on the premise that the friction performance of the sealing strip is guaranteed, the abrasion resistance of the sealing strip is improved, and the wind noise of the sealing strip is reduced.

Description

Technical Field

[0001] The utility model relates to the field of automobile accessories, in particular to a sealing strip applied to a frameless automobile. Background Art

[0002] Because frameless cars have eliminated some sheet metal between the glass and the body, higher requirements are placed on the sealing force, sliding force and wear resistance of the sealing products between the glass and the body. When the door is closed, the sealing product needs to have a higher sealing force to ensure sufficient sealing effect. During the glass lifting process, the sealing product needs to have a lower sliding force to ensure smooth lifting of the glass.

[0003] Currently, the most commonly used coating in the industry is the particle coating, which can significantly reduce the sliding force and wear resistance of the glass during lifting and lowering under the action of particles when the closing force is large. However, this sealing product produces a lot of wind noise during use. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is the defect that the existing sealing strip has large wind noise, so as to provide a sealing strip applied to frameless automobiles.

[0005] To this end, the utility model adopts the following technical solutions:

[0006] The utility model provides a sealing strip applied to a frameless automobile, comprising a substrate, a particle layer and a lubricating layer being arranged on the surface of the substrate, wherein the lubricating layer is arranged on the side of the particle layer facing away from the surface of the substrate.

[0007] In some embodiments, the sealing strip has a thickness of 1 to 3 mm.

[0008] In some of the embodiments, the material of the base layer includes at least one of ethylene propylene diene monomer rubber (EPDM) or thermoplastic elastomer (TPE).

[0009] In some of the embodiments, a primer layer is disposed between the substrate and the particle layer.

[0010] In some embodiments, the thickness of the primer layer is 3-10 μm.

[0011] Optionally, the material of the base coating layer includes at least one of LORD 459X or KEJIAN KJW611. In this embodiment, it is not limited to product brands that perform similar functions.

[0012] In some embodiments, the surface of the substrate is plasma treated.

[0013] Preferably, the plasma treatment uses low-temperature plasma treatment equipment, wherein the distance between the nozzle of the low-temperature plasma treatment equipment and the surface of the substrate is less than or equal to 15 mm, preferably, the distance between the nozzle and the surface of the substrate is 15 mm, 14 mm, 13 mm, 10 mm, or 8 mm.

[0014] In some embodiments, the particle layer has a thickness of 10 to 25 μm.

[0015] The material of the particle layer includes at least one of Huafu 8808 and Starr 91023.

[0016] Optionally, the material of the granular layer includes a conjunctival agent, organic particles and a lubricant.

[0017] In some embodiments, the lubricant in the particle layer includes at least one of a silicon-containing lubricant and a fluorine-containing lubricant.

[0018] Preferably, the lubricant is surface-treated silicon powder or fluorine-containing material added to the coating material.

[0019] Preferably, the lubricant is polyurethane modified by silicon or fluorine material.

[0020] In some embodiments, the organic particles include polyethylene particles, and the diameter of the polyethylene particles is 25-80 μm. Optionally, the conjunctival agent includes polyurethane.

[0021] When spraying the particle layer, depending on the spraying position, the particle layer appears uneven due to the large diameter of the organic particles.

[0022] In some embodiments, the lubricating layer has a thickness of 5 to 12 μm.

[0023] The lubricating layer includes at least one of Starr elcasil400 or Huafu M0019.

[0024] In some embodiments, the material of the lubricating layer includes a conjunctival agent and a lubricant.

[0025] Optionally, the lubricant includes at least one of a silicon-containing lubricant and a fluorine-containing lubricant.

[0026] Preferably, the lubricant is surface-treated silicon powder or fluorine-containing material added to the coating material.

[0027] Preferably, the lubricant is polyurethane modified by silicon or fluorine material.

[0028] Optionally, the conjunctival agent comprises polyurethane.

[0029] In some embodiments, the lubricating material in the lubricating layer is 15-25 wt %.

[0030] The technical solution of the utility model has the following advantages:

[0031] The utility model provides a sealing strip applied to a frameless automobile, comprising a substrate, wherein a particle layer and a lubricating layer are sequentially arranged on the surface of the substrate. The utility model forms a sealing strip by arranging two layers of coating, namely, the particle layer and the lubricating layer, on the surface of the substrate, thereby improving the wear resistance of the sealing strip and reducing the wind noise of the sealing strip while ensuring the friction performance of the sealing strip.

[0032] The sealing strip provided by the utility model has a base coating on its surface. Since the base material is a non-polar material, the bonding force between the non-polar material and the coating is relatively small. Therefore, the bonding performance between the base material and the coating is improved by providing the base coating.

[0033] The substrate in the sealing strip provided by the utility model is subjected to plasma treatment, which can not only make the surface of the substrate change from a non-polar state to a polar state, thereby increasing the surface tension of the substrate product, but also achieve the purpose of improving the bonding performance between the substrate and the coating.

[0034] The material of the lubricating layer in the sealing strip provided by the utility model comprises a conjunctival agent and a lubricant. The lubricating layer is provided to compensate for the raised surface formed by the granular layer, thereby improving the sealing performance of the sealing strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 This is a schematic diagram of the sealing strip structure obtained in Example 1 of the utility model;

[0037] Figure 2 This is a schematic diagram of the sealing strip structure obtained in Example 2 of the utility model;

[0038] Reference numerals:

[0039] 1-substrate; 2-priming layer; 3-granular layer; 4-lubricating layer. DETAILED DESCRIPTION

[0040] The following embodiments are provided for a better understanding of the present invention, but are not limited to the best implementation mode described herein, and do not constitute limitations on the content and protection scope of the present invention. Any product identical or similar to the present invention obtained by anyone under the inspiration of the present invention or by combining the features of the present invention with other prior arts shall fall within the protection scope of the present invention.

[0041] If no specific experimental steps or conditions are specified in the examples, the experiments can be carried out according to the conventional experimental steps or conditions described in the literature in the art, and the reagents are all commercially available standard reagents.

[0042] Compared with framed models, the main difference between frameless models is that frameless models do not have a frame above the waistline, and rely on the one-sided cooperation between the door glass and the body sealing strip to achieve the purpose of sealing. Compared with traditional models, there is no seal on one side. In order to ensure the sealing effect, the sealing force between the glass and the sealing strip of frameless models must be greater. Under the same coating, the sliding force will also increase, which will cause abnormal noise during the glass lifting process. In order to solve this problem, most frameless models use particle-type coatings, which can reduce the contact area between the door glass and the sealing strip to reduce the sliding resistance. However, due to the presence of particles in the particle layer coating, the microscopic gap between the glass and the coating increases, which will cause certain wind noise problems. In order to solve this problem, the utility model inventor found that after the particle coating and the substrate form a film, a layer of particle-free lubricating coating is sprayed on the particle coating, which can not only solve the problem of coating surface roughness, but also reduce wind noise while ensuring sealing force and sliding force.

[0043] The following specific embodiments are further explanations of the present invention. The examples cited cannot list all implementation methods of the present invention. Only some implementation methods are used as examples for explanation. The specific embodiments are as follows:

[0044] Example 1

[0045] See also Figure 1 As shown, this embodiment provides a sealing strip applied to a frameless car, and the structure of the sealing strip includes a substrate 1, a particle layer 3 and a lubricating layer 4 in sequence.

[0046] This embodiment provides a method for preparing a sealing strip for a frameless automobile, and the parameters of the specific steps are as follows:

[0047] After the substrate passes through the hot air box and is vulcanized, the surface temperature of the substrate is reduced to below 100°C using cooling water and other media, and then the water on the surface of the product is removed with compressed gas. The surface of the substrate is treated with plasma using low-temperature plasma equipment, where the distance between the nozzle of the low-temperature plasma equipment and the surface of the substrate is 15mm, so that the surface energy of the substrate surface can reach more than 65 dynes. The particle layer material is sprayed on the surface of the substrate, and after heating and curing in a far-infrared curing box, the surface temperature reaches 100°C, and the coating of the particle layer is dried. Then the lubricating layer material is sprayed on its surface, and the product is heated by a heating device to achieve complete curing of the coating material.

[0048] In this embodiment, the substrate is EPDM, the particle layer is Huafu 8808, and the lubricating layer is Huafu M0019, wherein the diameter of the polyethylene particles in the particle layer is 50 μm.

[0049] The sealing strip prepared by the preparation method of this embodiment has a thickness of 2 mm, wherein the particle layer has a thickness of 20 μm and the lubricating layer has a thickness of 10 μm.

[0050] Example 2

[0051] See also Figure 2 As shown, this embodiment provides a sealing strip applied to a frameless car, and the structure of the sealing strip includes a substrate 1, a primer layer 2, a particle layer 3 and a lubricating layer 4 in sequence.

[0052] This embodiment provides a method for preparing a sealing strip for a frameless automobile, and the parameters of the specific steps are as follows:

[0053] Preheat the substrate to a surface temperature of about 90°C, spray primer on the preheated substrate surface to form a base coat, preheat the product at 90°C for 5 minutes to cure the primer, spray the particle layer material on the base coat surface, heat and cure at 90°C for 5 minutes, then spray the lubricating layer material on the surface, and heat and cure at 90°C for 10 minutes to obtain a sealing strip.

[0054] In this embodiment, the substrate is EPDM, the primer is LORD 459X, the particle layer is Huafu 8808, and the lubricating layer is Huafu M0019, wherein the diameter of the polyethylene particles in the particle layer is 50 μm.

[0055] The sealing strip prepared by the preparation method of this embodiment has a thickness of 2 mm, wherein the thickness of the primer layer is 5 μm, the thickness of the particle layer is 20 μm, and the thickness of the lubricating layer is 10 μm.

[0056] Example 3

[0057] This embodiment provides a sealing strip applied to a frameless car, wherein the structure of the sealing strip comprises, in sequence, a substrate, a primer layer, a particle layer and a lubricating layer.

[0058] This embodiment provides a method for preparing a sealing strip for a frameless automobile, and the parameters of the specific steps are as follows:

[0059] Preheat the substrate to a surface temperature of about 90°C, spray primer on the preheated substrate surface to form a primer coating, preheat the product at 90°C for 5 minutes to complete the curing of the primer, spray the particle layer material on the surface of the primer coating, heat and cure it at 90°C for 5 minutes, then spray the lubricating layer material on the surface, and heat and cure it at 90°C for 10 minutes to obtain a sealing strip.

[0060] In this embodiment, the substrate is EPDM, the primer is LORD 459X, the particle layer is Huafu 8808, and the lubricating layer is Huafu M0019, wherein the organic particles in the particle layer are polyethylene particles, and the diameter of the polyethylene particles is 25 μm.

[0061] The sealing strip prepared by the preparation method of this embodiment has a thickness of 1 mm, wherein the thickness of the primer layer is 10 μm, the thickness of the particle layer is 10 μm, and the thickness of the lubricating layer is 12 μm.

[0062] Example 4

[0063] This embodiment provides a sealing strip applied to a frameless car, wherein the structure of the sealing strip comprises, in sequence, a substrate, a primer layer, a particle layer and a lubricating layer.

[0064] This embodiment provides a method for preparing a sealing strip for a frameless automobile, and the parameters of the specific steps are as follows:

[0065] Preheat the substrate to a surface temperature of about 90°C, spray primer on the preheated substrate surface to form a base coat, preheat the product at 90°C for 5 minutes to cure the primer, spray the particle layer material on the base coat surface, heat and cure at 90°C for 5 minutes, then spray the lubricating layer material on the surface, and heat and cure at 90°C for 10 minutes to obtain a sealing strip.

[0066] In this embodiment, the substrate is TPE, the primer is Kejian KJW611, the particle layer is Starr 91023, and the lubricating layer is Starr elcasil400, wherein the organic particles in the particle layer are polyethylene particles, and the diameter of the polyethylene particles is 80 μm.

[0067] The sealing strip prepared by the preparation method of this embodiment has a thickness of 3 mm, wherein the thickness of the primer layer is 3 μm, the thickness of the particle layer is 25 μm, and the thickness of the lubricating layer is 5 μm.

[0068] Comparative Example

[0069] This comparative example provides a sealing strip applied to a frameless automobile, wherein the structure of the sealing strip comprises, in sequence, a substrate, a primer layer, and a particle layer.

[0070] This comparative example provides a method for preparing a sealing strip applied to a frameless automobile, and the parameters of the specific steps are as follows:

[0071] The substrate is preheated to a surface temperature of about 90°C, a primer is sprayed onto the preheated substrate surface to form a base coat, the product is preheated at 90°C for 5 minutes to complete the curing of the primer, a particle layer material is sprayed onto the base coat surface, and the sealing strip is obtained after heating and curing at 90°C for 5 minutes.

[0072] In this embodiment, the substrate is EPDM and the particle layer is Huafu 8808, wherein the organic particles in the particle layer are polyethylene particles, and the diameter of the polyethylene particles is 50 μm.

[0073] The sealing strip prepared by the preparation method of this embodiment has a thickness of 2 mm, wherein the thickness of the primer layer is 5 μm, and the thickness of the particle layer is 20 μm.

[0074] Test Example 1

[0075] The friction performance, wear times and wind noise of the sealing strips of Examples 1-4 and the comparative example were tested. The results are shown in Table 1.

[0076] Among them, the detection method of friction performance and the detection method of wear resistance times refer to the national standard GB / T21282-2007, and the detection method of wind noise refers to the standard TCSAE 147-2020.

[0077] Table 1 Performance results of sealing strips

[0078] Group Friction coefficient Wear times Wind noise Comparative Example 0.3-0.4 15000 80 dB Example 1 0.3-0.5 25000 56 dB Example 2 0.3-0.4 25000 55 dB Example 3 0.3-0.4 25500 57 dB Example 4 0.3-0.4 24800 55 dB

[0079] According to the data results in Table 1, it can be seen that the sealing strip provided by the utility model can improve the wear resistance and reduce the wind noise without reducing the friction performance.

[0080] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A sealing strip for a frameless car, characterized in that: The invention comprises a substrate, the surface of which is provided with a granular layer and a lubricating layer, wherein the lubricating layer is arranged on the side of the granular layer facing away from the surface of the substrate, and the material of the lubricating layer comprises a conjunctival agent and a lubricant.

2. The sealing strip according to claim 1, characterized in that: A primer layer is arranged between the substrate and the particle layer.

3. The sealing strip according to claim 1, characterized in that: The surface of the substrate is plasma treated.

4. The sealing strip according to claim 2, characterized in that: The thickness of the primer layer is 3-10 μm.

5. The sealing strip according to claim 3, characterized in that: The dyne value of the plasma treatment is greater than or equal to 60.

6. The sealing strip according to any one of claims 1 to 5, characterized in that: The thickness of the particle layer is 10 to 25 μm; and / or, The thickness of the sealing strip is 1 to 3 mm.

7. The sealing strip according to claim 6, characterized in that: The thickness of the lubricating layer is 5 to 12 μm; and / or, The material of the substrate includes at least one of EPDM rubber and thermoplastic elastomer.

8. The sealing strip according to claim 7, characterized in that: The material of the granular layer includes a conjunctival agent, organic particles and a lubricant; and / or, The organic particles include polyethylene particles, and the diameter of the polyethylene particles is 25 to 80 μm.

9. The sealing strip according to claim 1, characterized in that: The lubricant in the particle layer and / or the lubricating layer includes at least one of a silicon-containing lubricant and a fluorine-containing lubricant; and / or, The conjunctivating agent in the granular layer and / or the lubricating layer includes polyurethane.

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