A highly wettable adhesive bonding surface structure for thermoplastic plates

Abstract

The utility model relates to a thermoplastic plate high wettability adhesive surface structure, comprising a substrate; the substrate is provided with first grooves in an array, second grooves are arranged between the first grooves, and the second grooves are arranged on the substrate. The utility model solves the technical problems of low wettability and low adhesive strength of the thermoplastic plate surface in the prior art.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermoplastic plates, in particular to a thermoplastic plate high-wettability adhesive surface structure. Background Art

[0002] The continuous development of thermoplastic resin materials, especially new aromatic thermoplastic resins, has improved the rigidity, heat resistance and medium resistance of composite materials, making thermoplastic composite materials more and more widely used in aerospace, medical, electronic, mechanical and other fields, and becoming an extremely active research hotspot in the field of composite materials. The main thermoplastic resins that can be used as the resin matrix of advanced resin-based composite materials are: polyether sulfide (PES), polyether ether ketone (PEEK), polyetherimide (PEI), polyphenylene sulfide (PPS), etc.

[0003] There are three common connection methods for composite materials and composite materials / metals: adhesive connection, mechanical connection and hybrid connection. In the design of composite material connections, whether to use adhesive or mechanical connection depends mainly on the use and load conditions of the structural parts. Relatively speaking, adhesive connection is used in situations where the load is small, the components are thin, the reliability requirements are not high, and the environmental conditions are relatively mild.

[0004] However, the surface connection between thermoplastic plates currently has the following problems: the surfaces of existing thermoplastic plates are mostly smooth planes with low surface wettability, large contact angle of glue and low bonding strength. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a thermoplastic plate with high wettability bonding surface structure. By designing a reasonable bonding surface structure, the contact angle of the thermoplastic plate surface is reduced, thereby improving the wettability of the thermoplastic plate surface and enhancing the bonding strength.

[0006] The technical solution adopted by the utility model is as follows: the utility model provides a thermoplastic plate high wettability adhesive surface structure, including a substrate, the substrate is provided with first grooves in array, and second grooves are arranged between the first grooves. The second grooves are arranged on the substrate.

[0007] Furthermore, the cross-sectional shape of the first groove is a triangle.

[0008] Furthermore, the second groove is circular, and by designing a triangular and circular mixed texture, the surface wettability can be improved while replenishing the glue between the contact surfaces.

[0009] Furthermore, the bottom angle of the first groove is G, and G is 60°.

[0010] Furthermore, the side length of the triangle of the cross section of the first groove is C, and the size of C is 100 microns to 200 microns.

[0011] Furthermore, the second groove cross-section has a rectangular length of L and a width of B, wherein L is 250 micrometers to 400 micrometers, and B is 100 micrometers to 200 micrometers.

[0012] The beneficial effects achieved by the utility model using the above structure are as follows: the scheme provides a thermoplastic plate with high wettability bonding surface structure, which reduces the contact angle between the glue and the contact plate surface by designing a micron-level surface texture on the surface of the thermoplastic plate, thereby improving the wettability of the thermoplastic plate and improving the bonding strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a main structural diagram of a thermoplastic plate high wettability adhesive surface structure provided by the utility model;

[0014] Figure 2 for Figure 1 A partial enlarged view of part A;

[0015] Figure 3 A schematic diagram of the contact angle of a thermoplastic plate high wettability adhesive surface structure provided by the utility model;

[0016] Figure 4 This is a structural diagram of the first groove and the second groove provided by the utility model.

[0017] Among them, 1. substrate, 2. first groove, 3. second groove.

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Specific embodiment:

[0022] like Figure 1 As shown, the utility model provides a thermoplastic plate high wettability adhesive surface structure, including a substrate 1, the substrate 1 is provided with a first groove 2 in an array, the first grooves 2 are provided with a second groove 3 in an array, and the second grooves 3 are provided on the substrate 1.

[0023] like Figure 2-Figure 4 As shown, the utility model provides a thermoplastic plate high wettability bonding surface structure, wherein the cross-sectional shape of the first groove 2 is a triangle.

[0024] like Figure 2-Figure 4 As shown, the utility model provides a thermoplastic plate high wettability bonding surface structure, wherein the second groove 3 is circular.

[0025] like Figure 4 As shown, the utility model provides a thermoplastic plate high wettability bonding surface structure, the bottom angle of the first groove 2 is G, and G is 60°.

[0026] like Figure 4 As shown, the utility model provides a thermoplastic plate high wettability bonding surface structure, the side length of the triangle in the cross section of the first groove 2 is C, and the size of C is 100 microns to 200 microns.

[0027] like Figure 4 As shown, the utility model provides a thermoplastic plate with high wettability bonding surface structure, the second groove 3 has a rectangular cross-section with a length of L and a width of B, the size of L is 250 microns to 400 microns, and the size of B is 100 microns to 200 microns.

[0028] Working principle:

[0029] cosθ c =f1(cosθ1+1)-1

[0030] In the formula, θ c is the contact angle of the surface structure having the first groove 2 and the second groove 3, θ1 is the contact angle of the smooth surface, and f1 is the proportional coefficient of the interaction area between the liquid and the solid surface.

[0031] According to the above formula, by changing the interaction area of ​​the liquid on the solid surface, the size of the contact angle can be changed, and then by designing the first groove 2 and the second groove 3 to change the proportional coefficient, the size of the contact angle can be reduced and the wettability can be increased, such as Figure 3 As shown, P is the contact angle of the liquid.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0034] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A thermoplastic board high wettability adhesive surface structure, comprising a substrate, characterized in that: The substrate is provided with an array of first grooves, and second grooves are arranged in an array between the first grooves. The second grooves are provided on the substrate.

2. A thermoplastic plate high wettability adhesive surface structure according to claim 1, characterized in that: The cross-section of the first groove is a triangle.

3. A thermoplastic plate high wettability adhesive surface structure according to claim 2, characterized in that: The second groove is circular.

4. A thermoplastic plate high wettability adhesive surface structure according to claim 3, characterized in that: The bottom angle of the first groove is G, and G is 60°.

5. A thermoplastic plate high wettability adhesive surface structure according to claim 4, characterized in that: The side length of the triangle in the cross section of the first groove is C, and the size of C is 100 microns to 200 microns.

6. A thermoplastic plate high wettability adhesive surface structure according to claim 5, characterized in that: The second groove has a rectangular cross-section with a length of L and a width of B. The size of L is 250 micrometers to 400 micrometers, and the size of B is 100 micrometers to 200 micrometers.

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