CN219267365U

CN219267365U - Three-layer co-extrusion low-smoke halogen-free flame-retardant waterproof cloth wire

Info

Publication number: CN219267365U
Application number: CN202223370684.3U
Authority: CN
Inventors: 吴来利; 郭克钢
Original assignee: Shenzhen Deep Cable Technology Co ltd
Current assignee: Shenzhen Deep Cable Technology Co ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-06-27
Anticipated expiration: 2032-12-13

Abstract

The utility model provides a three-layer co-extrusion low-smoke halogen-free flame-retardant waterproof cloth wire, which comprises the following components: a conductor, an inner insulating layer, an outer insulating layer and a waterproof layer; the inner insulating layer is coated on the surface of the conductor, the outer insulating layer is coated on the surface of the inner insulating layer, and the waterproof layer is coated on the surface of the outer insulating layer. The conductor is wrapped by adopting the three-layer extrusion mode of the crosslinked polyethylene, the low-smoke halogen-free polyolefin and the high-density flame-retardant polyethylene material, so that the flame retardance, the low smoke, the halogen-free and the low toxicity of the low-smoke halogen-free flame-retardant wire are ensured, the waterproof performance and the electrical performance are improved, and the cracking resistance and the wear resistance are also improved.

Description

Three-layer co-extrusion low-smoke halogen-free flame-retardant waterproof cloth wire

Technical Field

The utility model relates to the technical field of low-smoke halogen-free flame-retardant wires, in particular to a three-layer co-extrusion low-smoke halogen-free flame-retardant waterproof cloth wire.

Background

With the improvement of environmental protection requirements, the low-smoke halogen-free flame-retardant wire is a wire with great market demands in recent years, and the product has the properties of flame retardance, low smoke, no halogen and low toxicity during combustion, and is suitable for occasions with high requirements on fire protection.

Traditional low-smoke halogen-free flame-retardant wires generally adopt a single-layer extrusion mode, and are easy to absorb moisture. When a user uses the low-smoke halogen-free flame-retardant wire with the model specification, insulation resistance is low and electric leakage occurs frequently, so that a circuit is tripped frequently; and the product has poor wear resistance, and the laying requirements are difficult to meet due to the complex on-site laying environment.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a three-layer co-extrusion low-smoke halogen-free flame-retardant waterproof cloth wire, which aims to solve the problems of poor waterproof property, low resistance and poor wear resistance of the existing low-smoke halogen-free flame-retardant wire.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a three-layer co-extruded low smoke zero halogen flame retardant and waterproof cloth wire, comprising: a conductor, an inner insulating layer, an outer insulating layer and a waterproof layer; the inner insulating layer is coated on the surface of the conductor, the outer insulating layer is coated on the surface of the inner insulating layer, and the waterproof layer is coated on the surface of the outer insulating layer.

Wherein the waterproof layer is made of high-density flame-retardant polyethylene material.

Wherein the inner insulating layer is made of a crosslinked polyethylene material.

Wherein, the outer insulating layer is made of low smoke halogen-free polyolefin material.

The inner insulating layer, the outer insulating layer and the waterproof layer are extruded on the surface of the conductor in a three-layer co-extrusion mode.

Compared with the prior art, the utility model has the beneficial effects that: the conductor is wrapped by the crosslinked polyethylene, the low-smoke halogen-free polyolefin and the high-density flame retardant polyethylene, so that the insulating performance, the waterproof performance and the electrical performance of the product are improved while the flame retardance, the low smoke, the halogen-free performance and the low toxicity are ensured; through the extrusion mode of three-layer extrusion, the conductor, the inner insulating layer, the outer insulating layer and the waterproof layer are tightly combined and are not easy to fall off, and meanwhile, the insulativity, the cracking resistance, the waterproofness and the wear resistance of the low-smoke halogen-free flame-retardant wire are improved.

The foregoing description is only an overview of the present utility model, and is intended to be more clearly understood as being carried out in accordance with the following description of the preferred embodiments, as well as other objects, features and advantages of the present utility model.

Drawings

Fig. 1 is a schematic cross-sectional structure of a three-layer co-extrusion low-smoke halogen-free flame-retardant waterproof cloth wire.

Reference numerals:

100-three layers of co-extrusion low-smoke halogen-free flame retardant and waterproof cloth wires; 1-conductors; 2-an inner insulating layer; 3-an outer insulating layer; 4-waterproof layer.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and the detailed description, in order to make the objects, technical solutions and advantages of the present utility model more apparent.

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification/utility model and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the present utility model/specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Referring to fig. 1, the embodiment discloses a three-layer co-extrusion low-smoke halogen-free flame retardant and waterproof cloth wire 100, which comprises: a conductor 1, an inner insulating layer 2, an outer insulating layer 3 and a waterproof layer 4; the inner insulating layer 2 is coated on the surface of the conductor 1, the outer insulating layer 3 is coated on the surface of the inner insulating layer 2, and the waterproof layer 4 is coated on the surface of the outer insulating layer 3. The inner insulating layer 2 and the outer insulating layer 3 can exert high-quality insulativity, and the waterproof performance of the waterproof layer 4 is combined, so that the three-layer co-extrusion low-smoke halogen-free flame-retardant waterproof cloth wire 100 can avoid the occurrence of electric leakage phenomenon, and the use safety and the service life are improved.

In one embodiment, the waterproof layer 4 is made of a high-density flame-retardant polyethylene material. The high-density flame-retardant polyethylene has the advantages of cracking resistance and higher rigidity, and can protect the integrity of the inner insulating layer 2 and the outer insulating layer 3, so that the wear resistance of the three-layer co-extrusion low-smoke halogen-free flame-retardant waterproof cloth wire 100 is improved, and meanwhile, the high-density flame-retardant polyethylene has the functions of water resistance and moisture resistance, and the waterproof performance of the three-layer co-extrusion low-smoke halogen-free flame-retardant waterproof cloth wire 100 is improved.

In one embodiment, the inner insulating layer 2 is made of a cross-linked polyethylene material. The crosslinked polyethylene has high insulation resistance and cracking resistance, is coated on the surface of the conductor 1, and can directly protect the conductor 1 and provide good insulation.

In one embodiment, the outer insulating layer 3 is made of crosslinked polyethylene and low smoke halogen-free polyolefin material, respectively. The low-smoke halogen-free polyolefin has high flame retardance, generates little smoke during combustion, and does not contain harmful gases such as chlorine and the like. The inner insulating layer 2 and the outer insulating layer 3 improve the cracking resistance and reduce the harm while ensuring the three-layer co-extrusion low-smoke halogen-free flame retardance and the electrical performance of the waterproof cloth wire 100.

In one embodiment, the inner insulating layer 2, the outer insulating layer 3 and the waterproof layer 4 are extruded on the surface of the conductor 1 in a three-layer co-extrusion mode. The cross-linked polyethylene, the low-smoke zero-halogen polyolefin and the high-density flame retardant polyethylene are synchronously extruded in a three-layer extrusion mode, so that the inner insulating layer 2, the outer insulating layer 3 and the waterproof layer 4 can be tightly combined with the conductor 1, are not easy to fall off, and can better protect the conductor 1; the three-layer co-extrusion low-smoke halogen-free flame retardant waterproof cloth wire 100 can be waterproof, dampproof and not easy to crack; meanwhile, the insulation resistance value generated by the combination of the inner insulation layer 2 and the outer insulation layer 3 is superior to the national standard, and the insulation performance of the three-layer co-extrusion low-smoke halogen-free flame-retardant waterproof cloth wire 100 is enhanced.

The three-layer co-extrusion low-smoke halogen-free flame-retardant waterproof cloth wire is characterized in that a conductor is wrapped by three materials, namely crosslinked polyethylene, low-smoke halogen-free polyolefin and high-density flame-retardant polyethylene, so that the insulation performance, the waterproof performance and the electrical performance of a product are improved while the flame retardance, the low smoke, the halogen-free performance and the low toxicity are ensured; through the extrusion mode of three-layer extrusion, the conductor, the inner insulating layer, the outer insulating layer and the waterproof layer are tightly combined and are not easy to fall off, and meanwhile, the insulativity, the cracking resistance, the waterproofness and the wear resistance of the low-smoke halogen-free flame-retardant wire are improved.

The foregoing examples are provided to further illustrate the technical contents of the present utility model for the convenience of the reader, but are not intended to limit the embodiments of the present utility model thereto, and any technical extension or re-creation according to the present utility model is protected by the present utility model. The protection scope of the utility model is subject to the claims.

Claims

1. The utility model provides a three-layer is crowded low smoke and zero halogen fire-retardant and waterproof cloth electric wire altogether which characterized in that includes: a conductor, an inner insulating layer, an outer insulating layer and a waterproof layer; the inner insulating layer is coated on the surface of the conductor, the outer insulating layer is coated on the surface of the inner insulating layer, and the waterproof layer is coated on the surface of the outer insulating layer; the waterproof layer is made of a high-density flame-retardant polyethylene material.

2. The three-layer co-extruded low-smoke zero-halogen flame-retardant waterproof cloth wire according to claim 1, wherein the inner insulating layer is made of a crosslinked polyethylene material.

3. The three-layer co-extruded low-smoke zero-halogen flame-retardant waterproof cloth wire according to claim 2, wherein the outer insulating layer is made of a low-smoke zero-halogen polyolefin material.

4. The three-layer co-extruded low-smoke halogen-free flame retardant waterproof cloth wire according to claim 3, wherein the inner insulating layer, the outer insulating layer and the waterproof layer are extruded on the surface of the conductor in a three-layer co-extrusion mode.