High-temperature-resistant waterproof heat shrink tube

Abstract

The utility model discloses a high-temperature-resistant waterproof heat shrink tube which comprises a heat shrink tube base layer, and a plurality of annular waterproof protrusions are arranged on the inner surface of the heat shrink tube base layer at equal intervals. A flame-retardant layer, an anti-radiation layer, an anti-oxidation layer and an outer protection layer are sequentially arranged on the outer surface of the heat shrink tube base layer from inside to outside. According to the utility model, the plurality of waterproof protrusions are designed in the base layer of the heat shrink tube, after the heat shrink tube is placed at a position where an element needs to be protected, the heat shrink tube is heated and shrunk, and at the moment, the plurality of waterproof protrusions in the heat shrink tube shrink along with the shrinkage of the heat shrink tube so as to be tightly attached to a product joint; a plurality of waterproof bulges are arranged at the two ends of the connecting part, namely a plurality of waterproof defense lines, so that the waterproof effect can be improved, and by adopting the waterproof mode, the cost is reduced, only the heat shrink tube needs to be taken out during subsequent replacement, and the operation is more convenient; meanwhile, the flame-retardant layer is designed on the surface of the heat-shrinkable tube, so that the heat-shrinkable tube has excellent flame-retardant and fireproof performance and is safer to use in a high-temperature environment.

Description

Technical Field

[0001] The utility model belongs to the field of pipelines, in particular to a high-temperature resistant and waterproof heat shrinkable tube. Background Art

[0002] Heat shrink tubing is a kind of tubing with high temperature shrinkage, soft flame retardancy, insulation and corrosion resistance functions. It is widely used in insulation protection of various wire harnesses, solder joints, and inductors.

[0003] In order to improve the waterproof performance, current heat shrink tubing generally uses double-wall heat shrink tubing and designs a layer of hot melt adhesive inside the heat shrink tubing. When heated, the hot melt adhesive melts and fills the pores and gaps. After freezing, the wall thickness of the double-wall heat shrink tubing is uniform and strong, which improves the sealing performance. Although the above design can improve the overall waterproof effect, the colloid part will be bonded to the protected product. When the heat shrink tubing is subsequently replaced, the colloid needs to be cleaned, which is very inconvenient and cannot meet the growing usage needs of users. Utility Model Content

[0004] The purpose of the present invention is to provide a high-temperature resistant and waterproof heat shrinkable tube in order to solve the above-mentioned problems.

[0005] The technical solution adopted by the utility model is as follows: a high-temperature resistant and waterproof heat shrinkable tube comprises a heat shrinkable tube base, the inner surface of which is provided with a plurality of annular waterproof protrusions at equal intervals;

[0006] The outer surface of the heat shrink tube base layer is provided with a flame retardant layer, a radiation protection layer, an anti-oxidation layer and an outer protective layer in sequence from the inside to the outside.

[0007] In a preferred embodiment, the heat shrinkable tube base layer and the waterproof protrusion are formed as one body, and the heat shrinkable tube base layer is made of radiation cross-linked rubber material.

[0008] In a preferred embodiment, the flame retardant layer is made of a ceramic polymer composite material.

[0009] In a preferred embodiment, the radiation protection layer is made of nanometer radiation protection particle material, and the thickness of the radiation protection layer is 1-4 μm.

[0010] In a preferred embodiment, the anti-oxidation layer is formed by thermally curing an anti-oxidation adhesive, and the anti-oxidation adhesive is one of a polyurethane acrylate adhesive layer or a polyester acrylate adhesive layer with a thickness of 2 to 4 μm.

[0011] In a preferred embodiment, the outer protective layer is made of polyimide material.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0013] 1. In this utility model, multiple waterproof protrusions are designed in the base layer of the heat shrinkable tube. When the heat shrinkable tube is heated, the multiple waterproof protrusions inside shrink as the heat shrinkable tube shrinks, thereby clinging to the product connection. The waterproof protrusions at both ends of the connection form several waterproof lines, thereby improving the waterproof effect.

[0014] 2. In this utility model, since the waterproof protrusion is integrally formed with the heat shrink tube itself, the cost is lower than adding additional hot melt adhesive. Moreover, when replacing it later, only the heat shrink tube itself needs to be taken out, making installation and removal more convenient.

[0015] 3. In the present invention, a flame retardant layer, an anti-radiation layer, an anti-oxidation layer and an outer protective layer are designed on the surface of the heat shrink tube, so that the heat shrink tube itself can be used in high temperature and corrosive environments, with a wider overall application range and a longer overall service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the layered structure of the utility model as a whole;

[0017] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0018] Markings in the figure: 1-heat shrink tube base layer, 101-waterproof protrusion, 2-flame retardant layer, 3-radiation protection layer, 4-anti-oxidation layer, 5-outer protective layer. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] Reference Figure 1-2 The high-temperature resistant and waterproof heat shrinkable tube includes a heat shrinkable tube base layer 1. The inner surface of the heat shrinkable tube base layer 1 is provided with a plurality of annular waterproof protrusions 101 at equal intervals. A plurality of waterproof protrusions 101 are designed inside the heat shrinkable tube base layer 1. After the heat shrinkable tube is placed at the position of the component to be protected (such as the connection of wires and cables, etc.), the heat shrinkable tube is heated and shrinks due to the heat. At this time, the multiple waterproof protrusions 101 inside shrink as the heat shrinkable tube shrinks, thereby closely fitting the connection of the product. There are several waterproof protrusions 101 at both ends of the connection, which are several waterproof lines of defense, thereby improving the waterproof effect.

[0021] Furthermore, the outer surface of the heat shrinkable tube base layer 1 is provided with a flame retardant layer 2, an anti-radiation layer 3, an anti-oxidation layer 4 and an outer protective layer 5 from the inside to the outside. The flame retardant layer 2, the anti-radiation layer 3, the anti-oxidation layer 4 and the outer protective layer 5 are designed on the surface of the heat shrinkable tube, so that the heat shrinkable tube itself can be used in high temperature and corrosive environments, the overall application range is wider, and the overall service life is longer.

[0022] Furthermore, the heat shrink tube base layer 1 and the waterproof protrusion 101 are formed as one piece, and the heat shrink tube base layer 1 is made of radiation cross-linked rubber material. Since the waterproof protrusion 101 and the heat shrink tube base layer 1 are formed as one piece, the cost is lower than adding additional hot melt adhesive, and when replacing it later, you only need to take out the heat shrink tube itself, which is more convenient to install and disassemble.

[0023] Furthermore, the flame retardant layer 2 is made of a ceramic polymer composite material. The ceramic polymer composite material has excellent flame retardant and fireproof properties, can play a flame retardant and high-temperature heat protection role, making it safer to use in high-temperature environments.

[0024] Furthermore, the radiation protection layer 3 is made of nanometer radiation protection particle material, and the thickness of the radiation protection layer 3 is 1-4 μm. The radiation protection particles are silver particles, and the nanometer silver particles are used to achieve reflection and radiation protection operations.

[0025] Furthermore, the anti-oxidation layer 4 is formed by thermal curing of an anti-oxidation glue, and the anti-oxidation glue is one of a polyurethane acrylate glue layer or a polyester acrylate glue layer with a thickness of 2 to 4 μm. Polyurethane acrylate and polyester acrylate have excellent anti-oxidation and wear resistance, and can reduce the corrosion effect of water vapor, oxygen, halides and corrosive substances on the heat shrink tube, thereby greatly improving the overall service life.

[0026] Furthermore, the outer protective layer 5 is made of polyimide material. Polyimide has the characteristics of high temperature resistance (400° C.) and wear resistance, so that it can be used in high temperature and frequently friction environments.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-temperature resistant and waterproof heat shrink tubing, comprising a heat shrink tubing base layer, characterized in that: The inner surface of the heat shrink tube base layer is provided with a plurality of annular waterproof protrusions at equal intervals; The outer surface of the heat shrink tube base layer is provided with a flame retardant layer, a radiation protection layer, an anti-oxidation layer and an outer protective layer in sequence from the inside to the outside.

2. The high-temperature resistant and waterproof heat shrinkable tube according to claim 1, wherein: The heat shrink tube base layer and the waterproof protrusion are formed as one body, and the heat shrink tube base layer is made of radiation cross-linked rubber material.

3. The high-temperature resistant and waterproof heat shrinkable tube according to claim 1, wherein: The flame retardant layer is made of a ceramic polymer composite material.

4. The high-temperature resistant and waterproof heat shrinkable tube according to claim 1, wherein: The radiation protection layer is made of nanometer radiation protection particle material, and the thickness of the radiation protection layer is 1-4 μm.

5. The high temperature resistant and waterproof heat shrinkable tube according to claim 1, characterized in that: The anti-oxidation layer is formed by thermally curing an anti-oxidation glue, and the anti-oxidation glue is one of a polyurethane acrylate glue layer or a polyester acrylate glue layer with a thickness of 2 to 4 μm.

6. The high-temperature resistant and waterproof heat shrinkable tube according to claim 1, wherein: The outer protective layer is made of polyimide material.

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