Mildew-proof mica paper

Abstract

The utility model discloses mildew-proof mica paper which comprises a composite mica base layer, the composite mica base layer is composed of at least three base layers, a reinforced fiber net and an adhesive layer, and the upper end and the lower end of the composite mica base layer are respectively provided with a composite interface reinforcing layer. The composite interface strengthening layer is composed of a strengthening layer and a mildew preventive, the outer side of the composite interface strengthening layer is provided with a composite mildew-proof layer, the composite mildew-proof layer is composed of a fixing layer, a permeable layer and a mildew-proof layer, and the problems that the mica paper is prone to mildewing, so that the physical performance and the insulating performance are reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mica paper, in particular to mildew-proof mica paper. Background Art

[0002] Mica paper, as a high-performance insulating material, plays an important role in the fields of electricity, electronics, aerospace, etc. Its unique performance and application value have made it widely used in modern industry. Mica paper is made of high-quality muscovite, phlogopite, synthetic mica or calcined muscovite as raw materials through a series of complex processing processes. These raw materials have excellent physical and chemical properties, which make mica paper have the characteristics of high temperature resistance, corrosion resistance, insulation, etc. Through fine crushing, grading, pulping, papermaking and other steps, mica paper can show its unique performance and appearance. As a key insulating material, mica paper is widely used in the manufacturing process of electrical equipment such as motors, transformers, cables, etc. Its excellent insulation performance and high temperature resistance ensure the safe and stable operation of electrical equipment and prevent the occurrence of electrical failures.

[0003] For example, the Chinese authorized patent "An Insulating Mica Paper Tape" with announcement number CN206438070U includes a substrate, which is an acetate cloth. A layer of mica paper is arranged on one side of the acetate cloth. At the same time, a layer of polyimide film is arranged between the acetate cloth and the mica paper as an interlayer. In addition, a silane coupling agent layer is coated on the outer side of the acetate cloth, and an adhesive layer is formed on the outer surface of the silane coupling agent layer, and a layer of release paper is formed on the outer surface of the adhesive layer. Dot matrix holes are opened on the mica paper, and an adhesive layer is also formed on the outer side of the dot matrix holes, and a layer of nano-scale aluminum hydroxide or magnesium hydroxide particles is formed on the surface of the adhesive layer.

[0004] When the above-mentioned prior art is used in an external protective environment for a long time, the mica paper easily absorbs moisture in the air, thereby providing favorable conditions for the growth of mold thereon, which may erode the fiber structure of the mica paper, making it fragile and brittle, reducing its tensile strength and durability. In addition, the presence of mold may introduce impurities and moisture, resulting in a decrease in the insulation performance of the mica paper and an increased risk of electrical failure. Therefore, the existing needs are not met. In response to this, we have proposed a mildew-proof mica paper. Utility Model Content

[0005] The utility model aims to provide a mildew-proof mica paper to solve the problem in the above-mentioned background technology that the mica paper is prone to mildew, thereby causing the physical properties and insulation performance to decrease.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mildew-proof mica paper, comprising a composite mica base layer, the composite mica base layer is composed of a base layer, a reinforcing fiber mesh and an adhesive layer, and the base layer is provided with at least three layers, the upper and lower ends of the composite mica base layer are provided with a composite interface strengthening layer, the composite interface strengthening layer is composed of a reinforcing layer and a mildewproof agent, the outer side of the composite interface strengthening layer is provided with a composite mildew-proof layer, and the composite mildew-proof layer is composed of a fixing layer, a permeable layer and a mildew-proof layer.

[0007] Preferably, the reinforcing fiber mesh is located between adjacent base layers, and the reinforcing fiber mesh and the adjacent base layers are bonded and fixed by an adhesive layer.

[0008] Preferably, the reinforcing layer is a silane coupling agent, the mildewproof agent is nanosilver, and the mildewproof agent is distributed in the reinforcing layer, and the composite mica base layer and the composite mildewproof layer are bonded and fixed by a composite interface strengthening layer.

[0009] Preferably, the fixed layer is located on the inner side of the composite mildew-proof layer, the permeable layer is located on the outer side of the fixed layer, and the permeable layer and the fixed layer are in contact, and the mildew-proof layer is located on the outer side of the permeable layer, and the permeable layer and the mildew-proof layer are adhered.

[0010] Preferably, the thickness ratio of the composite mica base layer, the composite interface strengthening layer and the composite mildew-proof layer is 1:0.3:0.5.

[0011] Preferably, the thickness ratio between the base layer and the reinforcing fiber mesh is 1:0.2.

[0012] Preferably, the thickness ratio of the fixing layer, the permeable layer and the mildew-proof layer is 1:0.4:0.4.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model is provided with a composite mildew-proof layer composed of a mildew-proof layer, a permeable layer and a fixed layer, and its mildew-proof agent can directly inhibit the growth of mildew, effectively preventing mildew from growing on mica paper, thereby protecting the normal operation of electrical equipment. The presence of the permeable enhancement layer allows the mildew-proof agent to penetrate into the mica paper base more evenly, ensuring the durability and stability of the mildew-proof effect. The fixed layer makes the entire composite mildew-proof layer tightly combined with the mica paper base, not easy to fall off or delaminate, ensuring the stability and reliability of the structure.

[0015] 2. The utility model is provided with a composite interface strengthening layer, and a mildew-proof agent is distributed in the strengthening layer. The composite interface strengthening layer significantly improves the interface bonding strength between the mildew-proof layer and the mica base layer through the action of the interface strengthening agent, ensures the close combination between the two layers, and prevents the occurrence of stratification and peeling. The mildew-proof agent can be more evenly distributed on the interface through the action of the interface strengthening layer, thereby improving the mildew-proof performance of the entire structure and effectively extending the service life of the mildew-proof mica paper. The composite interface strengthening layer not only strengthens the interface connection, but also improves the stability of the entire structure, so that the mildew-proof mica paper can maintain stable performance in complex and harsh environments. Due to the close combination of the interface strengthening layer and the mica base layer, the electrical defects at the interface are reduced, thereby improving the electrical performance of the mildew-proof mica paper.

[0016] 3. The utility model is provided with a composite mica base layer. The base layer formed by stacking multiple layers of mica sheets has excellent electrical insulation performance, can effectively isolate current, and ensure the safe operation of electrical equipment. The addition of reinforced fiber mesh significantly improves the mechanical strength and tear resistance of the base layer, so that it can withstand greater stress and impact, and improves the durability of the equipment. The adhesive layer ensures close adhesion between the layers to form a stable integrated structure to prevent stratification or falling off during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 This is an exploded view of the composite mica base layer of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the composite interface strengthening layer of the utility model;

[0020] Figure 4 This is a schematic diagram of the composite mildew-proof layer structure of the utility model.

[0021] In the figure: 1. composite mica base layer; 11. base layer; 12. reinforced fiber mesh; 13. adhesive layer; 2. composite interface strengthening layer; 21. reinforcement layer; 22. mildew inhibitor; 3. composite mildew-proof layer; 31. fixing layer; 32. penetration layer; 33. mildew-proof layer. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1-4The utility model provides an embodiment: a mildew-proof mica paper, including a composite mica base layer 1, the composite mica base layer 1 is composed of a base layer 11, a reinforcing fiber mesh 12 and an adhesive layer 13, and the base layer 11 is provided with at least three layers, the upper and lower ends of the composite mica base layer 1 are provided with a composite interface strengthening layer 2, the composite interface strengthening layer 2 is composed of a reinforcing layer 21 and a mildewproof agent 22, and the outer side of the composite interface strengthening layer 2 is provided with a composite mildew-proof layer 3, and the composite mildew-proof layer 3 is composed of a fixing layer 31, a permeable layer 32 and a mildew-proof layer 33.

[0024] The base layer formed by stacking multiple layers of mica sheets has excellent electrical insulation performance, can effectively isolate current, and ensure the safe operation of electrical equipment. The addition of the reinforcing fiber mesh significantly improves the mechanical strength and tear resistance of the base layer, enabling it to withstand greater stress and impact. The composite interface strengthening layer 2 provides excellent interface connection performance and mildew resistance for mildew-proof mica paper through its unique composition and specific materials, while enhancing the stability and electrical performance of the structure, which helps to improve the service life and reliability of mildew-proof mica paper and meet wider and more stringent application requirements. The composite mildew-proof layer 3 provides excellent mildew resistance, uniform and lasting mildew resistance effect, and stable and reliable structure for mildew-proof mica paper through its unique composition and specific materials. This design helps to extend the service life of mildew-proof mica paper and improve the reliability of electrical equipment.

[0025] See also Figure 2 The reinforcing fiber mesh 12 is located between adjacent base layers 11, and the reinforcing fiber mesh 12 and the adjacent base layer 11 are bonded and fixed by an adhesive layer 13. The base layer 11 is composed of multiple layers of natural mica sheets, which provide excellent electrical insulation and high temperature resistance for the base layer. The reinforcing fiber mesh 12 is glass fiber, embedded between the mica sheets, and the mechanical strength and tear resistance of the base layer are enhanced through the interweaving and stretching of the fibers. The adhesive layer 13 is phenolic resin, which is located between the mica sheets and the reinforcing fiber mesh, ensuring close adhesion between the layers to form a stable integrated structure.

[0026] See also Figure 3 The reinforcing layer 21 is a silane coupling agent, the mildew preventer 22 is nano silver, and the mildew preventer 22 is distributed in the reinforcing layer 21. The composite mica base layer 1 and the composite mildew preventer 3 are bonded and fixed by the composite interface strengthening layer 2. The reinforcing layer 21 can enhance the chemical bonding and physical adsorption between the interfaces, improve the interface bonding strength, and improve the interface bonding strength between the mildew preventer layer and the mica base layer. The mildew preventer 22 has a broad-spectrum antibacterial property and can effectively inhibit the growth of mold. It is distributed in the reinforcing layer and further improves the mildew preventer effect through the action of the interface strengthening layer, thereby ensuring the mildew preventer performance of the entire structure.

[0027] See also Figure 4The fixed layer 31 is located on the inner side of the composite anti-mildew layer 3, the permeable layer 32 is located on the outer side of the fixed layer 31, and the permeable layer 32 is in contact with the fixed layer 31, the anti-mildew layer 33 is located on the outer side of the permeable layer 32, and the permeable layer 32 is adhered to the anti-mildew layer 33, the anti-mildew layer 33 is an organic halogen, which is used to directly inhibit the growth of mold and is the core part of the anti-mildew function; the permeable layer 32 is a modified polymer, which is located under the anti-mildew agent layer, and its function is to enhance the penetration ability of the anti-mildew agent into the mica paper base layer, ensuring that the anti-mildew effect is more uniform and lasting; the fixed layer 31 is an epoxy resin: as a transition layer between the composite anti-mildew layer 3 and the mica paper base layer, it is used to fix the anti-mildew agent and the permeability enhancement layer, ensuring the stability and durability of the entire anti-mildew structure.

[0028] See also Figure 1 The thickness ratio among the composite mica base layer 1, the composite interface strengthening layer 2, and the composite mildew-proof layer 3 is 1:0.3:0.5.

[0029] See also Figure 2 , the thickness ratio between the base layer 11 and the reinforcing fiber mesh 12 is 1:0.2.

[0030] See also Figure 4 The thickness ratio among the fixing layer 31, the permeable layer 32 and the mildew-proof layer 33 is 1:0.4:0.4.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A mildew-proof mica paper, comprising a composite mica base layer (1), characterized in that: The composite mica base layer (1) is composed of a base layer (11), a reinforcing fiber mesh (12) and an adhesive layer (13), and the base layer (11) is provided with at least three layers. The upper and lower ends of the composite mica base layer (1) are provided with composite interface strengthening layers (2), and the composite interface strengthening layer (2) is composed of a reinforcing layer (21) and a mildewproof agent (22). The outer side of the composite interface strengthening layer (2) is provided with a composite mildewproof layer (3), and the composite mildewproof layer (3) is composed of a fixing layer (31), a permeable layer (32) and a mildewproof layer (33).

2. The mildew-proof mica paper according to claim 1, characterized in that: The reinforcing fiber mesh (12) is located between adjacent base layers (11), and the reinforcing fiber mesh (12) and the adjacent base layers (11) are bonded and fixed via an adhesive layer (13).

3. The mildew-proof mica paper according to claim 1, characterized in that: The reinforcing layer (21) is a silane coupling agent, the mildew-proof agent (22) is nanosilver, and the mildew-proof agent (22) is distributed in the reinforcing layer (21), and the composite mica base layer (1) and the composite mildew-proof layer (3) are bonded and fixed via a composite interface strengthening layer (2).

4. The mildew-proof mica paper according to claim 1, characterized in that: The fixed layer (31) is located on the inner side of the composite mildew-proof layer (3), the permeable layer (32) is located on the outer side of the fixed layer (31), and the permeable layer (32) and the fixed layer (31) are in contact with each other, and the mildew-proof layer (33) is located on the outer side of the permeable layer (32), and the permeable layer (32) and the mildew-proof layer (33) are adhered to each other.

5. The mildew-proof mica paper according to claim 1, characterized in that: The thickness ratio between the composite mica base layer (1), the composite interface strengthening layer (2) and the composite mildew-proof layer (3) is 1:0.3:0.

5.

6. The mildew-proof mica paper according to claim 2, characterized in that: The thickness ratio between the base layer (11) and the reinforcing fiber mesh (12) is 1:0.

2.

7. The mildew-proof mica paper according to claim 4, characterized in that: The thickness ratio of the fixing layer (31), the permeable layer (32) and the mildew-proof layer (33) is 1:0.4:0.4.

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