CN116093506A - Membrane material, shell, battery cover, terminal equipment and preparation method of membrane material - Google Patents

Abstract

The embodiment of the application relates to the technical field of membrane materials and provides a membrane material, a shell, a battery cover, terminal equipment and a preparation method of the membrane material. The frame formed on the surface of the matrix forms support protection for the antibacterial structure, so that the probability of breakage or collapse of the antibacterial structure is reduced, and the long-acting antibacterial capacity of the surface of the film is maintained.

Description

Membrane material, shell, battery cover, terminal equipment and preparation method of membrane material

Technical Field

The application relates to the technical field of membrane materials, in particular to a membrane material, a shell with the membrane material, a battery cover with the shell, terminal equipment with the battery cover and a preparation method of the membrane material.

Background

The surface of the electronic product is an exposed surface which is directly contacted with the outside, and is also the part which is most contacted with the skin of the user. Therefore, whether the surface of the electronic product has antibacterial properties is also a concern for users.

At present, the surface of an electronic product is subjected to antibacterial treatment in two ways, wherein a battery cover of a mobile phone is taken as an example. Firstly, the nanoscale structure is formed on the battery cover, the size of the nanoscale structure is generally smaller than 500 nanometers and is obviously smaller than that of bacteria or fungi, the interaction of bacteria and the nanoscale structure during contact or suspension is utilized to cause cell body rupture, and the structure has hydrophobicity and can also inhibit the formation of bacterial group biomembrane. Secondly, an antibacterial coating is added on the base material of the battery cover, and long-acting antibacterial effect is realized by virtue of filler in the coating.

However, the above-mentioned antibacterial treatment method has the problems that the strength of the nano-scale structure is low, and the nano-scale structure is easily damaged and collapsed under the action of external force; and the degree of bonding between the antimicrobial coating and the paint coating of the battery cover requires additional consideration.

Disclosure of Invention

The embodiment of the application provides a membrane material, a shell, a battery cover, terminal equipment and a preparation method of the membrane material, which are used for improving the technical problem of short time effect of the antibacterial property of the surface of an electronic product.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme:

in a first aspect, an embodiment of the present application provides a film material, including a substrate and a filling body, the surface of the substrate is inwards sunken to form a holding structure, the filling body set up in the holding structure, the surface of the filling body forms an antibacterial structure, the surface of the antibacterial structure is at least partially less than or equal to the surface of the substrate.

The technical scheme in the embodiment of the application has at least the following technical effects or advantages:

the membrane material provided by the embodiment of the application comprises a matrix and a filling body. And a containing structure is formed on the surface of the matrix and used for filling the filling body, so that the bonding strength of the joint of the matrix and the filling body is increased, and the bonding stability of the filling body on the matrix is improved. And, providing an antimicrobial structure at the filler region in the matrix, i.e., performing an antimicrobial treatment by physical means. Specifically, the outer surface of the antibacterial structure is not higher than or protrudes out of the surface of the substrate, so that a frame formed on the surface of the substrate forms support protection for the antibacterial structure, the probability of breakage or collapse of the antibacterial structure is reduced, and the long-acting antibacterial capacity of the surface of the film material is maintained.

In one embodiment, the containment structure comprises either or both of a microscale structure or a first nanoscale structure.

By adopting the technical scheme, the size grade of the accommodating structure can be selected so as to adapt to the filling requirements of filling bodies in different areas of the membrane material.

In one embodiment, the microscale structures comprise continuous microscale structures.

By adopting the technical scheme, the distribution of the continuous micron structure on the matrix has certain continuity and repeatability so as to meet the combination stability of the filling body on the matrix.

In one embodiment, the continuous microstructure includes any one or more of inverted triangular pyramid, inverted rectangular pyramid or inverted hexagonal pyramid in connection distribution.

By adopting the technical scheme, the inverted triangular pyramid, the inverted rectangular pyramid or the inverted hexagonal pyramid is easier to realize in forming, and the structural stability is excellent.

In one embodiment, the continuous microscale structure has a side length a in the range of 20 μm.ltoreq.a.ltoreq.1 mm.

In one embodiment, the distance b between two adjacent continuous micro-scale structures is in the range of 1 μm.ltoreq.b.ltoreq.2 mm.

In one embodiment, the angle α between the side walls of the inverted triangular pyramid, the inverted rectangular pyramid or the inverted hexagonal pyramid and the surface of the base body ranges from 105 to α <180 °.

In one embodiment, the included angle α is in the range of 120.ltoreq.α.ltoreq.135 °.

In one embodiment, the first nanoscale structure comprises a continuous nanoscale structure.

By adopting the technical scheme, the distribution of the connected nanoscale structures on the matrix has certain continuity and repeatability so as to meet the combination stability of the filling body on the matrix.

In one embodiment, the antimicrobial structure comprises a second nanoscale structure.

By adopting the technical scheme, the second nanoscale structure can meet the requirement of the antibacterial structure for physical sterilization, and meanwhile, the frame formed on the surface of the matrix can also form supporting protection for the second nanoscale structure, so that the probability of breakage or collapse of the second nanoscale structure is effectively reduced.

In one embodiment, the second nanoscale structures include any one or more of columnar nanostructures, ring-like nanostructures, or mesh-like nanostructures distributed in an array.

By adopting the technical scheme, the columnar nano structure, the annular nano structure or the netlike nano structure is easier to realize in forming, and the structural stability is excellent.

In one embodiment, the height h of the columnar, ring, or mesh nanostructures ranges from 200 nm.ltoreq.h.ltoreq.1000 nm.

In one embodiment, the diameter d of the columnar nanostructure, the ring nanostructure, or the network nanostructure ranges from 100 nm.ltoreq.d.ltoreq.500 nm.

In one embodiment, the difference n between the outer surface of the antimicrobial structure and the surface of the substrate ranges from 100 nm.ltoreq.n.ltoreq.20 μm.

By adopting the technical scheme, the difference between the outer surface of the antibacterial structure and the surface of the matrix is adjusted according to the actual use requirement, so that the protection of the integrity of the antibacterial structure is improved.

In one embodiment, the substrate comprises glass, polymethyl methacrylate, and polycarbonate.

In one embodiment, the filler comprises epoxy resin, acrylic resin, polyester resin, phenolic resin and amino resin.

In one embodiment, the substrate comprises a light transmissive substrate.

In one embodiment, the filler comprises a light transmissive filler.

In one embodiment, the film further comprises an antimicrobial body disposed at least partially at the antimicrobial structure.

By adopting the technical scheme, the antibacterial property of the membrane material is further improved by utilizing the chemical antibacterial property of the antibacterial body.

In a second aspect, an embodiment of the present application provides a housing, including the film material described above.

The technical scheme in the embodiment of the application has at least the following technical effects or advantages:

the shell provided by the embodiment of the application has longer antibacterial aging on the basis of the membrane material.

In a third aspect, embodiments of the present application provide a battery cover, including the above-mentioned housing.

The technical scheme in the embodiment of the application has at least the following technical effects or advantages:

The battery cover provided by the embodiment of the application has longer antibacterial performance on the basis of the shell.

In a fourth aspect, an embodiment of the present application provides a terminal device, including the battery cover described above.

The technical scheme in the embodiment of the application has at least the following technical effects or advantages:

the terminal equipment provided by the embodiment of the application has longer antibacterial aging on the basis of the battery cover.

In a fifth aspect, an embodiment of the present application further provides a method for preparing a film, including the following steps:

preparing a matrix, selecting the type of the material of the matrix, and forming the matrix by molding;

preparing a composite body, forming a containing structure on the exposed surface of the matrix, arranging a filling body in the containing structure, and combining the filling body and the matrix to form the composite body;

an antimicrobial layer is prepared, an antimicrobial structure is formed on an exposed surface of a filler region in the composite, and an exposed surface of a matrix in the composite is capable of supporting the antimicrobial structure.

The technical scheme in the embodiment of the application has at least the following technical effects or advantages:

the preparation method of the membrane material comprises the steps of selecting proper material types of a matrix to prepare a corresponding matrix; forming a containing structure on the outer pavement of the substrate, for example, forming the containing structure by etching, stamping, femtosecond laser, phase separation and the like, and then filling the filling body into the containing structure to form a composite body; an antimicrobial structure is formed on the exposed face of the filler region in the composite, and the exposed face of the matrix in the composite is capable of supporting the antimicrobial structure. Thus, the film obtained by the preparation method of the film has longer antibacterial aging.

Drawings

Fig. 1 is a sectional view of a case of an electronic device in the related art;

fig. 2 is a sectional view of a case of an electronic device in the related art after being pressed;

fig. 3 is another cross-sectional view of a housing of an electronic device in the related art;

fig. 4 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

FIG. 5 is a cross-sectional view of a film according to an embodiment of the present disclosure after forming a receiving structure on a substrate;

FIG. 6 is a cross-sectional view of a membrane material according to an embodiment of the present disclosure after forming a receiving structure on a substrate and then disposing a filler;

FIG. 7 is a cross-sectional view of a membrane material according to an embodiment of the present disclosure;

FIG. 8 is an enlarged view of FIG. 7 at A;

fig. 9 is a schematic structural diagram of a receiving structure of a membrane material according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of a receiving structure of a membrane material according to a second embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of a receiving structure of a membrane material according to a third embodiment of the present disclosure;

fig. 12 is a schematic structural diagram of an antibacterial structure of a film according to a fourth embodiment of the present disclosure;

fig. 13 is a schematic structural diagram of an antibacterial structure of a film according to a fifth embodiment of the present disclosure;

fig. 14 is a schematic structural diagram of an antibacterial structure of a film according to a sixth embodiment of the present disclosure;

Fig. 15 is a flowchart of a method for preparing a film according to an embodiment of the present application.

Wherein, each reference sign in the figure:

1. a housing; 2. a nano-antimicrobial microstructure; 3. a substrate; 4. a paint coating; 5. an antimicrobial coating;

100. a membrane material;

10. a base; 20. a filler;

10a, a containing structure; 20a, an antimicrobial structure 20a;10a1, an inverted triangular pyramid; 10a2, an inverted rectangular pyramid; 10a3, an inverted hexagonal pyramid; 20a1, columnar nanostructures; 20a2, a cyclic nanostructure; 20a3, a network nanostructure;

200. a battery cover;

1000. and a terminal device.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it should be understood that the terms "length," "width," "thickness," "top," "bottom," "inner," "outer," "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

The terms "first," "second," "third," "fourth," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. For example, the first pushing portion and the second pushing portion are merely for distinguishing between the different pushing portions, and are not limited in their order, and the first pushing portion may also be named as the second pushing portion, and the second pushing portion may also be named as the first pushing portion, without departing from the scope of the various described embodiments. And the terms "first," "second," "third," "fourth," and the like are not intended to limit the scope of the indicated features to be necessarily different.

In the present application, unless explicitly specified and limited otherwise, the terms "coupled," "connected," and the like are to be construed broadly, and may be fixedly attached, detachably attached, or integrally formed, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In the present application, "and/or" is merely one association relationship describing the association object, meaning that three relationships may exist; for example, a and/or B may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be noted that, in this application, words such as "in one embodiment," "illustratively," "for example," and the like are used to indicate an example, instance, or illustration. Any embodiment or design described herein as "in one embodiment," "illustratively," "for example," should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "in one embodiment," "illustratively," "for example," and the like are intended to present related concepts in a concrete fashion.

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1 to 3, fig. 1 is a sectional view of a case of an electronic device in the related art, fig. 2 is a sectional view of the case of the electronic device in the related art after being pressed, and fig. 3 is another sectional view of the case of the electronic device in the related art. As shown in fig. 1 and 2, the outer layer of the housing 1 of the electronic device is formed with a nano antimicrobial microstructure 2, and the nano antimicrobial microstructure 2 is used to be much smaller than bacteria and fungi in size, and the surface of the nano antimicrobial microstructure 2 has hydrophobicity, so that the bacteria are physically broken and the formation of a bacterial group biofilm is inhibited when the bacteria are contacted or hung on the surface of the nano antimicrobial microstructure 2. However, the nano-antibacterial microstructure 2 is formed on the exposed surface of the housing, and the nano-antibacterial microstructure 2 is easily damaged or collapsed under the impact of external force, so that the housing 1 of the electronic device has a short antibacterial effect.

Further, as shown in fig. 3, the housing of such an electronic device includes a base material 3, a paint coating 4, and an antibacterial coating 5, the antibacterial coating 5 being applied to the surface of the paint coating 4. The principle of the sterilization is to perform the sterilization by chemical means. However, the reliability of the bond between the antimicrobial coating 5 and the paint coating 4 has been a difficult problem to overcome, the presence of a sensitization source for the organic chemical type antimicrobial agent in the antimicrobial coating 5, and the antimicrobial coating 5 also has a certain influence on the feel and color of the housing.

In summary, the antibacterial treatment of the outer shell in both physical and chemical modes has certain drawbacks.

In view of the above, the embodiments of the present application provide a film material capable of improving the technical problem of low antibacterial efficiency of the casing of the electronic device in the related art.

Referring to fig. 5 to 7, the film 100 includes a substrate 10 and a filler 20. The surface of the base body 10 is recessed inwards to form a containing structure 10a, the filling body 20 is arranged in the containing structure 10a, the surface of the filling body 20 forms an antibacterial structure 20a, and the outer surface of the antibacterial structure 20a is at least partially smaller than or equal to the surface of the base body 10.

It will be appreciated that the substrate 10 is a carrier for providing support and bearing the primary mechanical properties of the membrane 100. Here, the material used for forming the substrate 10 is not limited, and for example, the substrate 10 may be a transparent substrate 10 or a non-transparent substrate 10, or the substrate 10 may be a rigid substrate 10 or a flexible substrate 10 according to the use requirements of the application, and thus, the material for manufacturing the substrate 10 may be glass, plastic, metal, rubber, or the like.

The packing 20 is a susceptor for installing the antibacterial structure 20a, and is required to be suitable for processing the antibacterial structure 20 a. Here, the packing body 20 should be in a fluid state or a semi-fluid state in an initial state, have a certain fluidity, and then a resolidification process is formed on the base body 10.

The surface of the substrate 10 refers to an exposed surface of the substrate 10, and may be a surface which is directly in contact with the outside and is disposed outward, or may be a surface disposed inward, regardless of the use state of the substrate 10. The receiving structure 10a is formed on a surface of the base 10 for receiving the packing 20. The containing structure 10a can increase the contact area between the base body 10 and the filling body 20, reduce the sliding between the base body 10 and the filling body, and improve the combination degree of the base body and the filling body.

Here, the accommodating structure 10a may be pits, grooves, or the like formed on the surface of the substrate 10, and the number, size, and distribution of the pits and grooves are not limited. For example, the accommodating structure 10a includes pits distributed in an array, and the cross section of the pits is square, triangular, pentagonal, hexagonal, etc. in a plane direction parallel to the surface of the substrate 10.

The surface of the filling body 20 is a structural surface facing away from the base body 10, and is an exposed surface of the filling body 20 contacting the outside.

The antimicrobial structure 20a may be formed on the surface of the filler 20 by etching, stamping, femtosecond laser, and the like. It will be appreciated that the antibacterial principle of the antibacterial structure 20a is a physical antibacterial, i.e. the antibacterial is performed according to its own structure, for example, the antibacterial structure 20a may be a nano-sized structure, and by virtue of its size being much smaller than that of bacteria or fungi, interactions when bacteria contact or hang the nano-sized structure cause cell disruption, and by virtue of its hydrophobicity, also inhibit the formation of a microbiota biofilm.

The surface of the antimicrobial structure 20a is rugged due to the self-structural characteristics of the antimicrobial structure 20a, and thus the outer surface of the antimicrobial structure 20a is the surface of the antimicrobial structure 20a with the highest height on the packing body 20. Similarly, since the surface of the substrate 10 also exhibits the height fluctuation after the accommodating structure 10a is formed on the surface of the substrate 10, the surface of the substrate 10 means the exposed surface on which the accommodating structure 10a is not formed.

Meanwhile, according to practical use requirements, the outer surface of the antibacterial structure 20a may be at least partially smaller than or equal to the surface of the substrate 10, for example, at the film 100 with high frequency of external force, the outer surface of the antibacterial structure 20a is smaller than or equal to the surface of the substrate 10, and at the film 100 with low frequency of external force, the outer surface of the antibacterial structure 20a may be higher than the surface of the substrate 10. It will be appreciated that the outer surface of the antibacterial structure 20a is protected by the substrate 10 without being exposed to the surface of the substrate 10, i.e., the external force is at least partially applied to the surface of the substrate 10, so that most of the antibacterial structure 20a is prevented from being damaged, and further, the stability of the antibacterial structure 20a is maintained, and the antibacterial performance is prolonged. Thus, the antibacterial property of the film 100 is aged longer.

The film 100 provided in the embodiment of the application includes a substrate 10 and a filler 20. The accommodating structure 10a is formed on the surface of the substrate 10 for filling the filling body 20, so as to increase the bonding strength of the bonding position of the substrate 10 and the filling body 20 and improve the bonding stability of the filling body 20 on the substrate 10. And, an antibacterial structure 20a is provided at the region of the filler 20 in the base 10, that is, antibacterial treatment is performed by physical means. Specifically, the outer surface of the antibacterial structure 20a is not higher than or protrudes from the surface of the substrate 10, so that the frame formed on the surface of the substrate 10 forms a supporting protection for the antibacterial structure 20a, and the probability of breakage or collapse of the antibacterial structure 20a is reduced, so as to maintain the long-acting antibacterial capability of the surface of the film 100.

The structural form of the accommodating structure 10a may be selected according to the compressive resistance requirement of the surface of the substrate 10, and thus, the accommodating structure 10a includes either one or both of a micro-scale structure or a first nano-scale structure.

Here, the micro-scale structure means that the size of the accommodating structure 10a is in the micro-scale, for example, the accommodating structure 10a is pits distributed on the surface of the substrate 10 in an array, and then the size of each pit may be in the micro-scale, the side length of the pit may be in the micro-scale, the diameter of the pit may be in the micro-scale, or the volume of the pit may be in the micro-scale. Of course, the accommodating structure 10a may be formed by other structures, such as grooves, holes, etc., and similarly, various kinds of grooves, holes are of the order of micrometers.

The first nanoscale structure means that the size of the accommodating structure 10a is nanoscale, for example, the accommodating structure 10a is formed by pits distributed on the surface of the substrate 10 in an array, and then the size of each pit may be nanoscale, the side length of the pit may be nanoscale, the diameter of the pit may be nanoscale, or the volume of the pit may be nanoscale. Of course, the accommodating structure 10a may be formed by other structures, such as grooves, holes, etc., and as such, various kinds of grooves, holes are nano-sized.

And, in terms of structural composition, the accommodating structures 10a may be all of micron-sized structures, that is, the sizes of the pits distributed on the surface of the substrate 10 are all of micron-sized; alternatively, the accommodating structures 10a may be nano-scale structures, that is, the sizes of the pits distributed on the surface of the substrate 10 are nano-scale; alternatively, the receiving structure 10a includes a micro-scale structure and a nano-scale structure, that is, the size of the pits disposed on the surface of the substrate 10 is classified into two kinds of nano-scale and micro-scale.

Specifically, in some embodiments, the microscale structures include continuous microscale structures.

It will be appreciated that in the form of a structure, the continuous micron-sized structure is disposed in a continuous, uninterrupted array on the surface of the substrate 10, exhibiting structural repeatability and connectivity.

Illustratively, in the planar direction of the surface of the substrate 10, the continuous micro-scale structure includes a plurality of triangular pits, where connectivity is represented by two adjacent pits sharing a same side, or, the distance between two adjacent pits is small, even negligible, and the distance between two adjacent pits is equal, and so on, so that the continuous pits are formed on the surface of the substrate 10.

Furthermore, a continuous micro-scale structure is also understood to be partially continuous and fully continuous.

The surface of the substrate 10 is divided into regions, and each region has a high frequency of contact with the outside, so that a continuous micro-scale structure is provided on the surface in the current region, and the regions are separated from each other with a large distance therebetween, thereby exhibiting a locally continuous effect from the external view.

And, completely continuous is understood to mean that the entire surface of the substrate 10 forms a continuous micro-scale structure, i.e., the continuous micro-scale structure completely covers the entire surface of the substrate 10.

Of course, in other embodiments, the microscale structures may also include discontinuous microscale structures.

It will be appreciated that the discontinuous, continuous micron-sized structures are intermittently, differentially arranged on the substrate 10, with some variability and irregularity in the structure.

Referring to fig. 9 to 11, in some specific embodiments, the continuous microstructure includes any one or more of inverted triangular pyramids 10a1, inverted rectangular pyramids 10a2, and inverted hexagonal pyramids 10a3 that are connected and distributed.

As can be appreciated, in the planar direction that is planar to the surface of the base 10, the cross section of the inverted triangular pyramid 10a1 is triangular, the cross section of the inverted rectangular pyramid 10a2 is quadrangular, and the cross section of the inverted hexagonal pyramid 10a3 is hexagonal. The three structures are easier to realize in the forming process, and the structural stability is excellent.

As shown in fig. 9, the continuous micro-scale structure includes inverted triangular pyramids 10a1 that are continuously distributed, and in the planar direction that is planar on the surface of the substrate 10, the cross section of the inverted triangular pyramids 10a1 is a regular triangle, and two adjacent regular triangles share the same side, or the intervals between each two adjacent regular triangles are equal.

As shown in fig. 10, the continuous micro-scale structure includes inverted rectangular pyramids 10a2 that are continuously distributed, and in the plane direction of the surface of the substrate 10, the cross section of the inverted rectangular pyramids 10a2 is square, and two adjacent squares share the same side, or the intervals between each two adjacent squares are equal.

As shown in fig. 11, the continuous micro-scale structure includes inverted hexagonal pyramids 10a3 that are continuously distributed, and in the plane direction of the plane on the surface of the substrate 10, the cross section of the inverted hexagonal pyramids 10a3 is regular hexagons, and two adjacent regular hexagons share the same side, or the intervals between each two adjacent regular hexagons are equal.

Of course, the continuous micro-scale structure further includes any two combinations of the inverted triangular pyramids 10a1, 10a2, and 10a3 that are connected and distributed, for example, the combination of the inverted triangular pyramids 10a1 and 10a2, the cross section of the inverted triangular pyramid 10a1 is a regular triangle, the cross section of the inverted rectangular pyramid 10a2 is a square, and adjacent regular triangles and squares share the same side in the plane direction of the plane on the surface of the substrate 10. Alternatively, the combination of the inverted triangular pyramid 10a1 and the inverted hexagonal pyramid 10a3 has a regular triangle shape in the cross section of the inverted triangular pyramid 10a1 and a regular hexagon shape in the cross section of the inverted hexagonal pyramid 10a3 in the plane direction of the plane on the surface of the substrate 10, and the adjacent regular triangle and regular hexagon share the same side. And, the continuous micro-scale structure further includes a combination of the inverted triangular pyramid 10a1, the inverted rectangular pyramid 10a2, and the inverted hexagonal pyramid 10a3 which are connected and distributed. In the plane direction of the plane on the surface of the substrate 10, the cross section of the inverted triangular pyramid 10a1 is a regular triangle, the cross section of the inverted rectangular pyramid 10a2 is a square, the cross section of the inverted hexagonal pyramid 10a3 is a regular hexagon, adjacent regular triangles and squares share the same side, adjacent regular triangles and regular hexagons share the same side, and the like.

Referring to FIGS. 9-11, in some embodiments, the side length a of the continuous micro-scale structure is in the range of 20 μm.ltoreq.a.ltoreq.1 mm.

It will be appreciated that the side length of the pattern formed by the continuous microscale structure on the substrate 10 should be on the microscale. For example, as shown in the drawing, when the continuous micro-scale structure includes inverted triangular pyramids 10a1 continuously distributed, the cross section of the inverted triangular pyramids 10a1 is in the shape of a regular triangle in the plane direction of the plane on the surface of the substrate 10, and then the side length a of the regular triangle ranges from 20 μm.ltoreq.a.ltoreq.1 mm. And, when the continuous micro-scale structure includes the inverted quadrangular pyramid 10a2 continuously distributed, the cross section of the inverted quadrangular pyramid 10a2 is square in the plane direction of the plane on the surface of the substrate 10, then the side length a of the square is in the range of 20 μm.ltoreq.a.ltoreq.1 mm. Alternatively, when the continuous micro-scale structure includes inverted hexagonal pyramids 10a3 continuously distributed, the cross section of the inverted hexagonal pyramids 10a3 is a regular hexagon in the plane direction of the plane on the surface of the substrate 10, and then the side length a of the regular hexagon ranges from 20 μm.ltoreq.a.ltoreq.1 mm.

Here, the side length a of the continuous micro-scale structure may take the values of 20 μm, 50 μm, 100 μm, 200 μm, 500 μm, 1000 μm, etc.

Referring to FIGS. 9-11, in some embodiments, the spacing b of two adjacent consecutive micro-scale structures is in the range of 1 μm.ltoreq.b.ltoreq.2 mm.

It will be appreciated that the pitch of the pattern formed by the continuous microscale structure on the substrate 10 may also be embodied in the microscale. For example, as shown in the drawing, when the continuous micro-scale structure includes inverted triangular pyramids 10a1 continuously distributed, the cross section of the inverted triangular pyramids 10a1 is in the form of regular triangles in the plane direction of the plane on the surface of the substrate 10, and the interval b between each adjacent two regular triangles is in the range of 1 μm.ltoreq.b.ltoreq.2 mm. When the continuous micro-scale structure comprises inverted rectangular pyramids 10a2 which are continuously distributed, the cross section of each inverted rectangular pyramid 10a2 is square in the plane direction of the plane on the surface of the substrate 10, and the distance b between every two adjacent squares is in the range of 1 μm.ltoreq.b.ltoreq.2mm. When the continuous micron-sized structure comprises inverted hexagonal pyramids 10a3 which are continuously distributed, the cross section of each inverted hexagonal pyramid 10a3 is in a regular hexagon shape in the plane direction of the plane on the surface of the substrate 10, and the distance b between every two adjacent regular hexagons is in the range of 1 mu m-b-2 mm.

Here, the pitch b of two adjacent consecutive micro-scale structures may take the values of 1 μm, 5 μm, 10 μm, 50 μm, 100 μm, 200 μm, 500 μm, 1000 μm, 1500 μm, 2000 μm, etc.

Referring to FIG. 6, in some embodiments, the angle alpha between the side walls and the surface of the base 10 in the inverted triangular pyramid 10a1, the inverted rectangular pyramid 10a2, or the inverted hexagonal pyramid 10a3 ranges from 105 deg. to < alpha <180 deg..

It will be understood that, after the inverted triangular pyramid 10a1, the inverted rectangular pyramid 10a2 or the inverted hexagonal pyramid 10a3 is formed on the surface of the base 10, the plane on which the side wall of each inverted pyramid is located forms an angle α with the surface of the base 10, the angle α representing the depth formed by each inverted pyramid on the surface of the base 10, and that, as the angle α is larger, the slope of the side wall of each inverted pyramid with respect to the surface of the base 10 is larger, the depth of each inverted pyramid is shallower.

Here, the angle α between the side wall of the inverted triangular pyramid 10a1, the inverted rectangular pyramid 10a2, or the inverted hexagonal pyramid 10a3 and the surface of the base body 10 may take the values of 105 °, 110 °, 120 °, 125 °, 130 °, 135 °, 140 °, 145 °, 150 °, 155 °, 160 °, 165 °, 170 °, and the like.

In consideration of the molding processing mode and the molding effect, the value range of the included angle alpha can be preferably 120 degrees or less and alpha is less than 135 degrees.

It can be understood that, within this range, the inclination of the side walls in the inverted triangular pyramid 10a1, the inverted rectangular pyramid 10a2 or the inverted hexagonal pyramid 10a3 with respect to the surface of the base body 10 and the depth thereof are moderate, and are more suitable for the filling of the filler 20 and the improvement of the degree of bonding of the filler 20 with the base body 10.

In some embodiments, the first nanoscale structure comprises a continuous nanoscale structure.

It will be appreciated that in structural form, the continuous nanoscale structures are distributed in a continuous, uninterrupted array across the surface of the substrate 10, exhibiting structural repeatability and connectivity.

Illustratively, in the planar direction of the surface of the substrate 10, the continuous nanoscale structure includes a plurality of triangular pits, the connectivity of which is represented by the fact that two adjacent pits share the same side, or the distance between two adjacent pits is small, even negligible, and the distance between two adjacent pits is equal, and so on, so that the continuous pits are formed on the surface of the substrate 10.

Furthermore, a continuous nanoscale structure can also be understood as being partially continuous and completely continuous.

The surface of the substrate 10 is divided into regions, and each region has a high frequency of contact with the outside, so that a continuous nanoscale structure is provided on the surface in the current region, and the regions are separated from each other with a large distance therebetween, thereby exhibiting a locally continuous effect from the external view.

And, completely continuous is understood to mean that the entire surface of the substrate 10 forms a continuous nano-scale structure, i.e., the continuous nano-scale structure completely covers the entire surface of the substrate 10.

In some embodiments, the antimicrobial structure 20a includes a second nanoscale structure.

It is understood that the second nano-scale structure means that the antibacterial structure 20a has a size of nano-scale, for example, the antibacterial structure 20a includes an array of protruding columns, tubes, ribs, etc. formed on the surface of the packing body 20. Then the size of the posts, tubes or ribs is nano-scale. And the distribution spacing among the convex columns, the pipe bodies or the convex ribs is also nano-scale. Thus, bacteria or fungi when contacted or suspended on the posts, tubes or ribs rupture the cell bodies and effectively inhibit the formation of a biofilm of the flora.

In some embodiments, when the accommodating structure 10a is a first nano-scale structure, the first nano-structure is sized and the second nano-structure is sized and sized so as to form the antibacterial structure 20a on the surface of the filling body 20.

Specifically, referring to fig. 12 to 14, in some embodiments, the second nanoscale structures include any one or more of columnar nanostructures 20a1, ring-shaped nanostructures 20a2, or mesh-shaped nanostructures 20a3 distributed in an array.

It will be appreciated that the second nanoscale structures comprise columnar nanostructures 20a1 distributed in an array over the surface of the filler 20; alternatively, the second nanoscale structure includes annular nanostructures 20a2 distributed in an array over the surface of the filler 20; alternatively, the second nanoscale structure includes a network of nanostructures 20a3 that distribute the surface of the filler 20 in an array. Furthermore, the second nanoscale structure includes any two combinations of columnar nanostructures 20a1, ring-like nanostructures 20a2, or mesh-like nanostructures 20a3 distributed in an array. And, the second nanoscale structure includes columnar nanostructures 20a1, ring-like nanostructures 20a2, and network-like nanostructures 20a3 distributed in an array.

Here, the size of the dimension in the columnar nanostructure 20a1, the annular nanostructure 20a2, or the mesh nanostructure 20a3 is nano-sized, for example, the diameter of the columnar nanostructure 20a1 is nano-sized, the outer diameter of the annular nanostructure 20a2 is nano-sized, and the width of the mesh nanostructure 20a3 is nano-sized. Meanwhile, the distribution pitch of the columnar nano-structures 20a1, the ring-like nano-structures 20a2, or the mesh-like nano-structures 20a3 in the packing body 20 is also nano-scale.

Referring to FIG. 8, in one embodiment, the height h of the columnar nano-structures 20a1, the ring-like nano-structures 20a2 or the network-like nano-structures 20a3 is in the range of 200 nm.ltoreq.h.ltoreq.1000 nm.

It is understood that the height h of the columnar nanostructure 20a1, the ring nanostructure 20a2, or the network nanostructure 20a3 has a value of 200nm, 300nm, 500nm, 800nm, 1000nm, or the like.

Referring to FIG. 8, in one embodiment, the diameter d of the columnar nano-structure 20a1, the ring-like nano-structure 20a2 or the network-like nano-structure 20a3 is in the range of 200 nm.ltoreq.h.ltoreq.1000 nm.

It is understood that the diameter d of the columnar nanostructure 20a1, the ring nanostructure 20a2, or the network nanostructure 20a3 has a value of 100nm, 200nm, 300nm, 400nm, 500nm, or the like.

Referring to FIG. 8, in one embodiment, the difference n between the outer surface of the antimicrobial structure 20a and the surface of the substrate 10 is in the range of 100 nm.ltoreq.n.ltoreq.20. Mu.m.

It will be appreciated that the difference n between the outer surface of the antimicrobial structure 20a and the surface of the substrate 10 may be 100nm, 500nm, 1 μm, 5 μm, 10 μm, 15 μm, 20 μm, etc.

In some embodiments, the substrate 10 comprises glass, polymethyl methacrylate, and polycarbonate.

It will be appreciated that the material of the substrate 10 may be one of glass, polymethyl methacrylate and polycarbonate according to the use requirement. For example, in use cases where light transmission is desired, the substrate 10 may be made from glass, polymethyl methacrylate, and polycarbonate; in a use scene requiring light transmission, high strength and impact resistance, the substrate 10 can be prepared from polymethyl methacrylate; in use scenarios where light transmission, flame retardance, and heat resistance are desired, the substrate 10 may be made from polycarbonate.

In some embodiments, the material of the filling body 20 includes epoxy resin, acrylic resin, polyester resin, phenolic resin and amino resin.

It is understood that, according to the requirement, the material of the filling body 20 may be one of epoxy resin, acrylic resin, polyester resin, phenolic resin and amino resin. Therefore, the filler 20 needs to be easy to process in addition to the high strength and light-transmitting properties, so that the antibacterial structure 20a is formed on the surface of the filler 20.

In some embodiments, the substrate 10 comprises a light transmissive substrate 10.

It will be appreciated that the light transmissive substrate 10 is applicable to use situations requiring light transmission, such as display screens, lenses, protective films, and the like.

In some embodiments, the filler 20 comprises a light transmissive filler 20.

Similarly, the light-transmitting filler 20 is applied to a use scene requiring light transmission, such as a display screen, a lens, a protective film, and the like.

Illustratively, in one particular embodiment, both the base 10 and the filler 20 are light transmissive. When the light beam is reflected from the substrate 10 to the filler 20 or the antibacterial structure 20a, the film 100 can obtain higher light transmittance.

The principle is as follows: when light is emitted from the photophobic material to the photophobic material, half-wave loss occurs in the reflected light, the optical path difference of the reflected light of the surface after the nano-imprinting of the antibacterial structure 20a on the substrate 10 is exactly half-wave different from that of the reflected light of the surface before the imprinting, and the reflected light of the surface of the substrate 10 and the reflected light of the surface of the antibacterial structure 20a in the film 100 are counteracted, namely, the energy of the transmitted light is increased; especially, the antibacterial structure 20a is small in nano structure scale (below 200 nm), low in thickness and free from scattering of light, is used for protecting the regular order of the antibacterial structure 20a, can reduce the reflection of light, and has obviously improved light transmittance compared with a flat film without a microstructure on the surface.

In one embodiment, the film 100 further includes antimicrobial bodies disposed at least partially at the antimicrobial structures 20 a.

It is understood that the antibacterial body is a coating or colloid having an antibacterial function, which chemically performs an antibacterial function, and thus, the antibacterial body is formed at the gap of the antibacterial structure 20 a.

And, the antibacterial body may be optionally provided at the antibacterial structure 20a, for example, the antibacterial body may be provided at a partial area of the antibacterial structure 20a, or the antibacterial body may be provided at all of the antibacterial structure 20 a.

In some embodiments, embodiments of the present application provide a housing comprising the film 100 described above.

It will be appreciated that the housing may be manufactured from the film 100 described above, or the film 100 may be part or portion of the housing.

For example, taking the housing of the terminal device as an example, the housing is the outermost protective shell of the terminal device, and is also the portion that is most in contact with the user and the outside. Therefore, in order to achieve long-lasting antibacterial effect, the case may be manufactured from the above-described film material 100, i.e., processed to form a corresponding shape through a corresponding molding process. Of course, the film 100 may be disposed in a housing area, that is, after the housing is processed by a corresponding molding process, the film 100 may be disposed on the housing by attaching, splicing, clamping, or other mounting methods.

In some embodiments, embodiments of the present application provide a battery cover comprising the housing described above.

It is understood that the battery cover has a longer time of antibacterial property on the basis of the above-described case.

The battery cover is, for example, the part of the terminal device that is most in contact with the user and the outside, in particular the mobile phone, and is the part that is most in contact with the user's hand.

Referring to fig. 4, in some embodiments, a terminal device 1000 is provided in an embodiment of the present application, including the battery cover 200 described above.

It will be appreciated that the terminal device 1000 provided in the embodiment of the present application has a longer time of antibacterial performance of the terminal device 1000 on the basis of having the battery cover 200 described above.

Of course, the terminal device 1000 includes, in addition to the battery cover 200, a middle frame structure that is fastened to the battery cover 200, a touch screen disposed in the middle frame structure, and a main board assembly disposed in the middle frame structure.

The terminal device 1000 provided in the embodiment of the present application may be a mobile phone, a tablet computer, a wearable device (e.g. a watch), a vehicle-mounted device, or the like, but is not limited thereto.

Referring to fig. 15, the embodiment of the present application further provides a method for preparing a film 100, including the following steps:

S001, preparing a matrix 10, selecting the material type of the matrix 10, and forming the matrix 10 by molding;

it will be appreciated that the substrate 10 is made of a suitable material according to the actual requirements, where the substrate 10 is made of glass, polymethyl methacrylate, and polycarbonate. Meanwhile, the molding method of the base 10 is not limited, and for example, injection molding, milling, stamping, and the like may be used.

S002, preparing a composite body, forming a containing structure 10a on the exposed surface of the matrix 10, arranging the filling body 20 in the containing structure 10a, and combining the filling body 20 with the matrix 10 to form the composite body;

it will be appreciated that the material of the filling body 20 is selected according to the actual requirement, and for example, the material of the filling body 20 includes epoxy resin, acrylic resin, polyester resin, phenolic resin, amino resin, etc. The accommodating structure 10a may be formed on the surface of the substrate 10 by etching, embossing, femtosecond laser, phase separation, or other processing methods. Then, the filling body 20 is disposed in the accommodating structure 10a, the filling body 20 should be in a fluid state or a semi-fluid state in an initial state, have a certain fluidity, and then a curing process is formed on the substrate 10. For example, curing by heating or irradiation of ultraviolet rays. The immobilized packing 20 is free from fluidity and forms a complex with the matrix 10.

Here, the receiving structure 10a may include one or both of a micro-scale structure and a nano-scale structure. Specifically, the micro-scale structure includes any one or more of inverted triangular pyramids 10a1, inverted rectangular pyramids 10a2, or inverted hexagonal pyramids 10a3 in a connected distribution.

S003, an antibacterial layer is prepared, an antibacterial structure 20a is formed on the exposed surface of the filler 20 region in the composite, and the exposed surface of the base 10 in the composite can support the antibacterial structure 20 a.

It will be appreciated that the antimicrobial structure 20a formed on the packing body 20 may be supported by the exposed surface of the base body 10, thereby extending the structural stability of the antimicrobial structure 20 a.

Here, the antibacterial structure 20a includes any one or more of columnar nanostructures 20a1, ring-shaped nanostructures 20a2, or mesh-shaped nanostructures 20a3 distributed in an array.

The preparation method of the film 100 provided in the embodiment of the application comprises the following steps: selecting a proper material type of the matrix 10 to prepare a corresponding matrix 10; forming a receiving structure 10a on an outer road surface of the base body 10, for example, forming the receiving structure 10a by etching, embossing, femtosecond laser, phase separation, etc., and then filling the filling body 20 into the receiving structure 10a to form a composite body; an antibacterial structure 20a is formed on the exposed surface of the region of the filler 20 in the composite, and the exposed surface of the base 10 in the composite can support the antibacterial structure 20 a. Thus, the film 100 obtained by the method for producing a film 100 of the present application has a longer aging time of the antibacterial property.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes or substitutions are intended to be covered by the scope of the present application.

Claims (23)

1. The membrane material is characterized by comprising a matrix and a filling body, wherein the surface of the matrix is inwards recessed to form a containing structure, the filling body is arranged in the containing structure, the surface of the filling body forms an antibacterial structure, and the outer surface of the antibacterial structure is at least partially smaller than or equal to the surface of the matrix.

2. The film according to claim 1, wherein: the accommodating structure comprises any one or two of a micron-sized structure and a first nanoscale structure.

3. The film according to claim 2, wherein: the microscale structures include continuous microscale structures.

4. A film according to claim 3, wherein: the continuous micron structure comprises any one or more of inverted triangular pyramids, inverted rectangular pyramids or inverted hexagonal pyramids which are distributed in a connecting way.

5. The membrane material according to claim 3 or 4, wherein: the side length a of the continuous micron-sized structure is in the range of 20 mu m to less than or equal to a 1mm.

6. The membrane material according to claim 3 or 4, wherein: the distance b between two adjacent continuous micron-sized structures is in the range of 1 mu m-2 mm.

7. The membrane material according to claim 4, wherein: the included angle alpha between the side wall of the inverted triangular pyramid, the inverted rectangular pyramid or the inverted hexagonal pyramid and the surface of the substrate is in the range of 105 degrees less than or equal to alpha <180 degrees.

8. The membrane material of claim 7, wherein: the included angle alpha is in the range of 120 degrees or more and 135 degrees or less.

9. The film according to claim 2, wherein: the first nanoscale structure comprises a continuous nanoscale structure.

10. The film according to claim 1 or 2, wherein: the antimicrobial structure includes a second nanoscale structure.

11. The film according to claim 10, wherein: the second nanoscale structure comprises any one or more of columnar nano structures, annular nano structures or net-shaped nano structures distributed in an array.

12. The film according to claim 11, wherein: the height h of the columnar nano structure, the annular nano structure or the net-shaped nano structure is in the range of 200 nm-1000 nm.

13. The film according to claim 11 or 12, wherein: the diameter d of the columnar nano structure, the annular nano structure or the net-shaped nano structure is in the range of more than or equal to 100nm and less than or equal to 500nm.

14. The film of any one of claims 1, 2, 3, 4, 7, 8, 9, 11, 12, wherein: the difference n between the outer surface of the antibacterial structure and the surface of the matrix is in the range of 100 nm-20 mu m.

15. The film according to claim 1, wherein: the substrate is made of glass, polymethyl methacrylate and polycarbonate.

16. The film according to claim 1, wherein: the filler is made of epoxy resin, acrylic resin, polyester resin, phenolic resin and amino resin.

17. The film according to claim 1, wherein: the substrate comprises a light transmissive substrate.

18. A film according to claim 1 or 17, wherein: the filler comprises a light-transmitting filler.

19. The film according to claim 1, wherein: the membrane material also comprises antibacterial bodies, and the antibacterial bodies are arranged at least part of the antibacterial structures.

20. A housing, characterized in that: a film comprising any one of claims 1 to 19.

21. A battery cover, characterized by: comprising a housing according to claim 20.

22. A terminal device, characterized by: comprising a battery cover as claimed in claim 21.

23. The preparation method of the membrane material is characterized by comprising the following steps:

preparing a matrix, selecting the type of the material of the matrix, and forming the matrix by molding;

preparing a composite body, forming a containing structure on the exposed surface of the matrix, arranging a filling body in the containing structure, and combining the filling body and the matrix to form the composite body;

an antimicrobial layer is prepared, an antimicrobial structure is formed on an exposed surface of a filler region in the composite, and an exposed surface of a matrix in the composite is capable of supporting the antimicrobial structure.

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