CN112691871A

CN112691871A - Method for processing automobile sealing part and automobile sealing part

Info

Publication number: CN112691871A
Application number: CN202010312406.9A
Authority: CN
Inventors: 谈君; 张翊恒
Original assignee: Saint Gobain Glass France SAS
Current assignee: Saint Gobain Glass France SAS; Compagnie de Saint Gobain SA
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2021-04-23
Also published as: WO2021213248A1

Abstract

The present disclosure provides a method of treating an automotive seal component, and an automotive glass assembly. The method for processing the automobile sealing part comprises the following steps: step s1. applying a lubricating coating to the interfering surface of the sealing part that interferes with other parts of the automobile; and step s2. curing the lubricating coating to form a lubricating coating; the lubricating coating comprises silicon modified polyurethane resin, filler, wax and solvent. The lubricating coating is formed on the interference surface where the sealing part interferes with other parts of the automobile, so that the friction force between the sealing part of the automobile and other parts of the automobile can be effectively reduced, the noise is reduced, and the scraping resistance of a product is improved.

Description

Method for processing automobile sealing part and automobile sealing part

Technical Field

The present disclosure relates to a method of treating an automotive seal component, an automotive seal component and an automotive glass assembly comprising the seal component.

Background

According to the existing product design, after the automobile part is fixed to the automobile body, the area of the automobile part generates large abnormal sound during driving due to interference between the sealing part on the edge of the automobile part and other parts of the automobile, such as automobile body sheet metal.

Taking a window glass as an example, since an edge-covering member of a window glass edge interferes with other parts of an automobile such as a sheet metal of a vehicle body, a large noise is generated when the window glass is closed, and a large abnormal sound is generated in a window glass area during traveling.

Disclosure of Invention

Embodiments of the present disclosure provide a method for handling automotive seal components that solves, or at least partially solves, the above-mentioned problems and other potential problems existing in the prior art between automotive seal components and other components of an automobile.

In a first aspect of the present disclosure, there is provided a method of treating a sealing part for an automobile, characterized in that the method comprises:

step s 1: applying a lubricating coating to an interfering surface of the sealing component that interferes with other components of the automobile; and

step s 2: curing the lubricious coating to form a lubricious coating;

the lubricating coating comprises silicon modified polyurethane resin, filler, wax and solvent.

One basic idea is that by forming a lubricating coating on the interference surface where the automotive seal part interferes with other parts of the automobile, the frictional force between the seal part and other parts of the automobile can be effectively reduced, thereby reducing noise and improving the scratch resistance of the product.

The lubricating coating includes a wax which significantly improves the lubricity of the coating as compared to prior art coatings, thereby effectively reducing the frictional forces between the automotive seal and other parts of the automobile. In addition, the wax is relatively stable, and can effectively improve the aging resistance of the coating.

In a second aspect of the present disclosure, there is provided an automotive seal part provided with a lubricating coating on an interference surface with other parts of an automobile, the lubricating coating including a silicone-modified urethane resin, a filler, and a wax.

As described above, by providing the lubricating coating on the interference surface where the seal member interferes with other parts of the automobile, the frictional force between the seal member and other parts of the automobile can be effectively reduced, thereby reducing noise and improving the scratch resistance of the product.

In a third aspect of the present disclosure, there is provided an automotive glass assembly comprising a glass substrate and a edging member fixed to the glass substrate, characterized in that the edging member is the sealing member according to the second aspect.

By providing the lubricating coating on the interference surface where the automobile glass-covered part and other parts of the automobile interfere with each other, the frictional force between the automobile glass-covered part and other parts of the automobile can be effectively reduced, thereby significantly reducing the noise generated when the window glass is closed and the abnormal sound generated in the window glass area during the running.

It should be understood that this summary is not intended to identify key or essential features of the embodiments of the disclosure, nor is it intended to be limiting as to the scope of the disclosure. Other features of the present disclosure will become readily apparent from the following description.

Drawings

The present disclosure will now be described in more detail, with reference to the accompanying drawings, wherein the objects, features and advantages of the disclosure are readily understood

FIG. 1 shows a schematic representation of a prior art automotive glass-clad part interfering with other parts of an automobile.

FIG. 2 illustrates a schematic flow chart of a method of processing an automotive seal component according to one embodiment of the present disclosure;

FIG. 3 shows a schematic flow diagram of a method of processing an automotive seal component according to another embodiment of the present disclosure;

FIG. 4 shows a schematic flow diagram of a method of processing an automotive seal component according to another embodiment of the present disclosure;

FIG. 5 illustrates a schematic view of an automotive glass assembly according to one embodiment of the present disclosure;

FIG. 6 illustrates a schematic cross-sectional view of an automotive glass assembly taken along line A-A' of FIG. 5, in accordance with another embodiment of the present disclosure.

The same or similar reference numbers will be used throughout the drawings to refer to the same or like elements.

Detailed Description

As described above, in the conventional product design, after the automobile part is fixed to the vehicle body, the automobile part region generates a large abnormal sound during driving due to interference between the sealing member on the edge of the automobile part and other parts of the automobile, such as a body weather strip and a body sheet metal.

In the case of an automotive glass assembly, as shown in fig. 1, in the prior art, an automotive glass assembly 100 includes a glass substrate 110 and a covering member 120, and there is interference between the covering member 120 (e.g., an X region of the covering member 120 shown in fig. 1) and other automotive components 200 (e.g., a body molding), which causes the covering member 120 and other automotive components 200 to rub against each other, resulting in generation of a large noise when the window glass is closed and generation of a large abnormal sound in the window glass region during traveling.

To this end, in order to improve the user experience, the present disclosure provides a method of processing a sealing part for an automobile, an automobile sealing part, and an automobile glass assembly.

It should be understood that the present disclosure does not specifically limit the type of glass, the kind of glass, and the mounting position of the glass substrate 110. As for the glass type, the glass substrate 110 may be either tempered glass or laminated glass. The glass substrate 110 may be either inorganic glass or organic glass in terms of glass type. As for the mounting position, the glass substrate 110 may be an automobile door glass, a sunroof glass, a quarter glass, a windshield glass, or the like.

The present disclosure is further described below with reference to several exemplary embodiments in order to facilitate a full understanding of the present disclosure by those skilled in the art, but it should be understood that these embodiments are discussed only to enable those skilled in the art to better understand the subject matter described in the present disclosure so as to implement the present disclosure, and not to limit the scope, applicability, or examples set forth in the claims in any way. It should be understood that various features of the embodiments may be omitted, substituted, or added as desired without departing from the scope of the disclosure. In addition, features described in some embodiments may be combined in other embodiments.

In the present disclosure, the term "comprising" and its various variants may be understood as open-ended terms, which mean "including but not limited to"; the term "one embodiment" may be understood as "at least one embodiment"; the term "another embodiment" may be understood as "at least one other embodiment". Other terms that may be present but are not mentioned herein should not be construed or limited in a manner that would contradict the concept upon which the embodiments of the disclosure are based, unless expressly stated otherwise.

In the present disclosure, the terms "interfere" and "interfere with" may also be understood as "contact" and "contact". Accordingly, the term "interference surface" may also be understood as "contact surface". In automobile parts, this is a common phenomenon that many automobile parts may contact with each other and interfere with each other.

A method of processing an automotive seal component according to a first aspect of the present disclosure will be described first with reference to fig. 2 to 4. As shown in fig. 2, the method of processing a sealing part for an automobile includes:

step s 2: curing the lubricious coating to form a lubricious coating;

Compared with the prior art, one of the key components contained in the lubricating coating is wax, which can remarkably improve the lubricating property of the coating, thereby effectively reducing the friction force between the automobile sealing part and other parts of the automobile. In addition, the wax is relatively stable, and can effectively improve the aging resistance of the coating. Specific examples of the wax include paraffin wax, polyolefin wax, microcrystalline wax, fine powder wax, chlorinated paraffin wax, and the like.

The silicon modified polyurethane resin mainly plays a role of a skeleton so as to enable components such as fillers, wax and the like to be filled more uniformly. The silicon modified polyurethane resin is characterized in that a silicon-oxygen bond or a silicon-carbon bond and the like are introduced into a main chain or a side chain of the polyurethane resin, wherein silicon comprises hydroxyl siloxane, epoxy siloxane and the like. The main purpose of the silicon modification may be to add a silicone oil component to the polyurethane resin to enhance its lubricity. In addition, the silicone may also be used as a blocking agent in the polyurethane resin, or to modify the polyurethane resin to function as an aqueous dispersion emulsion, or the like. The silicon modified polyurethane resin comprises silicon modified water-based polyurethane resin and silicon modified oil-based polyurethane resin. In some embodiments, the silicon-modified polyurethane resin is a silicon-modified aqueous polyurethane resin, which is more environmentally friendly than a silicon-modified oil-based polyurethane resin.

The filler also serves primarily as a framework. In addition, the fillers also have a coloring effect. Some specific examples of fillers include: carbon black, calcium silicate, clay, kaolin, talcum powder, silicon dioxide, diatom, powdered mica, molybdenum disulfide and graphite. Specific examples of the solvent include water and the like.

Further, in some embodiments, the lubricating coating further comprises an adjuvant, a silicone oil, and/or a curing agent, among others. Wherein, the auxiliary agent comprises an antioxidant, a plasticizer, a stabilizer and the like, and the auxiliary agent mainly plays a role in aging resistance, filling or stability enhancement and the like. The silicone oil mainly plays a role in enhancing lubricating performance, and includes aqueous silicone oil and oily silicone oil. In some embodiments, the silicone oil is a water-based silicone oil, which is more environmentally friendly than an oil-based silicone oil. The curing agent primarily functions to accelerate the curing reaction of the coating to cure the lubricious coating to form a cured coating. Specific examples of the curing agent include polyisocyanates and the like.

It is understood that the above examples are merely illustrative and that those skilled in the art can select appropriate specific components according to actual needs without departing from the scope of the present disclosure.

In some embodiments, the lubricious coating may also be divided into two components, component I comprising: 50-70% of silicon modified waterborne polyurethane resin, 2-10% of filler, 2-5% of wax, 5-10% of auxiliary agent, 5-10% of waterborne silicone oil and the balance of solvent; component II includes a curing agent such as a polyisocyanate. Before use, component I, component II and the solvent are formulated according to a certain ratio, for example, as component I: and (2) component II: solvent 100: 10: 10 in proportion.

In particular to a process for curing the lubricating coating to form a lubricating coating, the lubricating coating can be cured by heating, air drying, and/or photocatalysis to form a lubricating coating. When the lubricating coating is cured by heating, the heating temperature is 20 ℃ to 150 ℃, such as 20 ℃, 30 ℃, 40 ℃, 50 ℃, 60 ℃, 70 ℃, 80 ℃, 90 ℃, 100 ℃, 110 ℃, 120 ℃, 130 ℃, 140 ℃ and 150 ℃; the heating time is 2 minutes to 24 hours, for example, 2 minutes, 3 minutes, 4 minutes, 5 minutes, 10 minutes, 30 minutes, 1 hour, 2 hours, 3 hours, 4 hours, 5 hours, 6 hours, 7 hours, 8 hours, 9 hours, 10 hours, 11 hours, 12 hours, 13 hours, 14 hours, 15 hours, 16 hours, 17 hours, 18 hours, 19 hours, 20 hours, 21 hours, 22 hours, 23 hours, 24 hours. In other embodiments, the heating temperature is from 70 ℃ to 90 ℃, e.g., 70 ℃, 80 ℃, 90 ℃; the heating time is 10 minutes to 30 minutes, for example 10 minutes, 15 minutes, 20 minutes, 30 minutes. It should be understood that the above examples are merely exemplary, and that one skilled in the art may select the appropriate curing regime, and appropriate heating temperatures and times, depending on the particular seal component material, type of lubricating coating, and other needs, without departing from the scope of the present disclosure.

Further, as shown in fig. 3, in some embodiments, a step of forming a base coat is further included before forming the lubricating coating. Specifically, before step s1, the method further comprises step a: applying a primer coat to the interfering surfaces of the sealing member;

step b: drying the base coat to form a base coat layer.

Accordingly, step b is followed by the following steps:

step s 1': applying a lubricious coating over the base coat; and

step s 2': curing the lubricious coating to form the lubricious coating.

Steps s1 ' and s2 ' are the same as steps s1 and s2 described previously and will not be described here again except that in step s1 ' the lubricating coating is applied over the basecoat.

When the automotive sealing part is made of a non-polar material such as thermoplastic elastomer (TPE), polypropylene (PP), or the like, adhesion between the lubricating coating and the sealing part may be additionally enhanced by forming a primer layer on the interference surface where the automotive sealing part interferes with other parts of the automobile before forming the lubricating coating. Polar materials such as polyvinyl chloride (PVC), Acrylonitrile Butadiene Styrene (ABS), etc. can actively adsorb components in the lubricating coating due to their own polarity, thereby having good adhesion with the lubricating coating. In contrast, the nonpolar material has a weak or no adsorption capacity, and therefore, by forming the above-described undercoat layer, the adhesion between the nonpolar material and the lubricating coating can be greatly enhanced. It will be appreciated that the need for applying a primer coat depends primarily on the nature of the material used to form the automotive sealing component.

This allows one to specifically select whether or not the undercoat needs to be applied before the application of the lubricating coating, depending on the characteristics of the material for automotive sealing parts. For example, for automotive seal parts made of polar materials such as polyvinyl chloride (PVC), Acrylonitrile Butadiene Styrene (ABS), etc., a desired adhesion effect between the lubricating coating and the edge-covering part can be achieved without applying a primer. In this case, the production cost can be reduced.

In some embodiments, the primer coating comprises a polyurethane-based primer coating, a polyolefin-based primer coating, or an acrylic-based primer coating. It is understood that the above examples are merely exemplary, and that one skilled in the art can select a suitable base coat according to actual needs without departing from the scope of the present disclosure. As to how to dry the undercoat, any means such as air drying and/or heating may be employed.

Further, as shown in fig. 4, before step a, the method further comprises the step of preheating the sealing member to bring the sealing member to a predetermined temperature. This is advantageous for enhancing the adhesion between the undercoat and the sealing member, particularly between certain undercoat (e.g., polyurethane undercoat, or polyolefin-based undercoat) and the sealing member.

In some embodiments, the preheating comprises heating the sealing member at a temperature of 60 ℃ to 90 ℃, e.g., 60 ℃, 70 ℃, 80 ℃, 90 ℃ for 10 seconds to 30 minutes, e.g., 10 seconds, 20 seconds, 30 seconds, 1 minute, 5 minutes, 10 minutes, 15 minutes, 20 minutes, 30 minutes. It should be understood that the preheating temperature and preheating time are merely illustrative, and depending on the material of the sealing member, one skilled in the art can select an appropriate preheating temperature; depending on the rate at which the sealing member reaches the predetermined temperature, one skilled in the art can select an appropriate preheating time.

A second aspect of the present disclosure provides an automotive seal part provided with a lubricating coating on an interference surface that interferes with other parts of an automobile, the lubricating coating including a silicone-modified urethane resin, a filler, and a wax.

The role of the silicone modified polyurethane resin, filler and wax is as described in the first aspect of the disclosure.

In some embodiments, the lubricious coating further comprises an adjuvant, a silicone oil, and/or a polyether. Wherein the function of the adjuvant and the silicone oil is as described in the first aspect of the present disclosure. Polyethers are reaction products formed after the reaction of silicon-modified polyurethane resins and curing agents such as polyisocyanates in lubricating coatings.

Further, in some embodiments, a primer layer is further included between the sealing member and the lubricating coating, the primer layer being a polyurethane-based primer, a polyolefin-based primer, an acrylic-based primer, or the like. As described above, by adding a primer layer between the automotive seal member and the lubricating coating, the adhesion between the lubricating coating and the seal member made of a nonpolar material can be additionally enhanced.

In a particular application, the automotive seal component may be any location seal component that has interference with any component of an automobile. For example, it may be an automobile glass-clad member, a vehicle body sealing member, or the like.

A third aspect of the present disclosure provides an automotive glass assembly 100. As shown in fig. 5, the automotive glass assembly 100 includes a glass substrate 110 and a edging part 120 fixed to the glass substrate 110, wherein the edging part 120 is a sealing part treated according to the method of the first aspect of the present disclosure, or is an automotive sealing part according to the second aspect of the present disclosure.

It should be understood that the edging part 120 may be fixed to the edge of the glass base 110 by integral injection molding and then treated by the method according to the first aspect of the present disclosure; the glass substrate 110 may also be formed (e.g., by extrusion) and processed as described in the first aspect of the disclosure and then attached to the edge of the glass substrate by bonding or snapping, etc. to form the automotive glass assembly 100.

Further, the binding member 120 may be made of: at least one of thermoplastic elastomer (TPE) material, polyvinyl chloride (PVC) material or Polyurethane (PU), acrylonitrile-butadiene-styrene plastic (ABS), polypropylene (PP), polyethylene terephthalate (PET), ethylene propylene rubber (EPDM), thermoplastic vulcanizate (TPV) material.

In order to compare the effects of the above-described lubricating coatings, two groups of door glass assemblies were provided, a group a door glass assembly was provided with the lubricating coating 130 (black deepened portion in fig. 5) according to the present disclosure on the interference surface where the hemming part 120 and the other part 200 of the automobile interfered with each other (region X of the hemming part 120 shown in fig. 5), and a group B door glass assembly was not provided with the above-described lubricating coating on the above-described interference surface. After the two door glass assemblies were mounted to the opening of the vehicle body, the operation of closing the door was repeated to test the presence or absence of a noticeable abnormal sound.

Table 1:

	whether there is any abnormal sound
		Group A vehicle door glass assembly (with coating)	No obvious abnormal sound
Group B vehicle door glass assembly (without coating)	Has obvious abnormal sound

As can be seen from table 1, by providing a lubricating coating on the interference surface where the door glass trim part and other parts of the automobile interfere with each other, the frictional force between the trim part and other parts of the automobile can be effectively reduced, thereby significantly reducing or avoiding the abnormal sound generated between the trim part and other parts of the automobile.

In addition, to test the aging resistance and scratch resistance of the lubricating coating of the present disclosure, the door glass assembly with the lubricating coating was first subjected to an aging treatment under different conditions as shown in table 2. Specifically, the Y-group door glass was subjected to 20 cycles of heat and cold treatment under heat treatment conditions of leaving at 80 ℃ for 12 hours and under cold treatment conditions of leaving at-30 ℃ for 12 hours. The Z-group door glass assembly was placed in 80 ℃ water for 96 hours. And then respectively scraping the lubricating coatings, namely forcibly scraping the surfaces of the lubricating coatings on the edge-covered parts subjected to aging treatment back and forth for a plurality of cycles by using non-woven fabrics.

Table 2:

it was observed that there was no significant change in the lubricous coating on the door glass assemblies in group Y and group Z as compared to group X after the aging treatment shown in table 2, indicating that the lubricous coatings of the present disclosure have good aging characteristics. In addition, the lubricating coatings of the X, Y and Z group window glass assemblies were free of significant scratches after the scratch treatment cycles shown in table 2. This indicates that the lubricating coating of the present disclosure has good scratch resistance.

Further, fig. 6 shows a cross-sectional view of an automotive glass assembly taken along line a-a' shown in fig. 5 according to another embodiment of the present disclosure, further including a primer layer 140 between the covering member 120 and the lubricating coating 130, the primer layer 140 being formed by the method according to the first aspect of the present disclosure, the primer layer being a polyurethane-based primer, a polyolefin-based primer, or an acrylic-based primer.

It is to be understood that the above detailed embodiments of the disclosure are merely illustrative of or explaining the principles of the disclosure and are not limiting of the disclosure. Therefore, any modification, equivalent replacement, and improvement made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure. Also, it is intended that the appended claims cover all such changes and modifications that fall within the true scope and range of equivalents of the claims.

Claims

1. A method of treating an automotive sealing component, the method comprising:

step s 2: curing the lubricious coating to form a lubricious coating;

2. The method of treating an automotive sealing part according to claim 1, characterized in that the lubricating coating further comprises an auxiliary agent, a silicone oil and/or a curing agent.

3. The method for treating an automobile sealing part according to claim 1 or 2, characterized in that the silicon-modified polyurethane resin is a silicon-modified aqueous polyurethane resin, the silicone oil is an aqueous silicone oil, and/or the curing agent is a polyisocyanate.

4. The method of processing an automotive sealing part according to claim 1, characterized in that in step s2, the lubricating coating is cured by heating, air drying and/or photocatalysis.

5. The method of processing an automobile sealing part according to claim 4, wherein when the lubricating coating is cured by heating, the heating temperature is 20 ℃ to 150 ℃ and the heating time is 2 minutes to 24 hours.

6. The method of processing an automobile sealing part according to claim 4, wherein the heating temperature is 70 ℃ to 90 ℃ and the heating time is 10 minutes to 30 minutes when the lubricating coating is cured by heating.

7. The method of processing an automotive sealing part of claim 1, characterized in that before step s1, the method further comprises

Step a: applying a primer coat to the interfering surface of the sealing member;

step b: drying the base coat to form a base coat layer.

8. The method for treating an automobile sealing member according to claim 7, wherein the undercoat is a polyurethane-based undercoat, a polyolefin-based undercoat, or an acrylic-based undercoat.

9. The method of treating automotive seal components of claim 7 further comprising the step of preheating the seal components prior to step a.

10. The method of processing an automotive sealing part according to claim 9, characterized in that said preheating comprises heating the sealing part at a temperature of 60 ℃ to 90 ℃ for 10 seconds to 30 minutes.

11. An automotive seal part characterized in that the seal part is provided with a lubricating coating on an interference surface with other parts of an automobile, the lubricating coating comprising a silicone-modified urethane resin, a filler and a wax.

12. The automotive seal of claim 11, wherein the lubricious coating further comprises an adjuvant, a silicone oil, and/or a polyether.

13. The automotive sealing member according to claim 11, characterized in that a primer layer is further provided between the sealing member and the lubricating coating layer, the primer layer being a polyurethane-based primer layer, a polyolefin-based primer layer, or an acrylic-based primer layer.

14. The automotive seal part according to claim 11, wherein the automotive seal part is an automotive glass-clad part or a vehicle body seal part.

15. An automotive glass assembly comprising a glass substrate and a edging component secured to the glass substrate, characterized in that the edging component is a sealing component according to any one of claims 11 to 13.