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Crosslinked polyolefin insulating sheath-free low-smoke halogen-free flame-retardant B1-level wire

A cross-linked polyolefin and sheath technology, which is applied in the direction of insulated cables, insulated conductors, circuits, etc., can solve the problems of poor vibration damping effect of wires and affect the normal operation of wires, and achieve good insulation and mechanical properties, and good environmental adaptation performance, to ensure the effect of normal operation

Pending Publication Date: 2022-04-12
福建成田科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To this end, it is necessary to provide cross-linked polyolefin insulated non-sheathed low-smoke, halogen-free, flame-retardant B1-grade wires to solve the problem that the existing wires have poor vibration damping effects and affect the normal operation of the wires.

Method used

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  • Crosslinked polyolefin insulating sheath-free low-smoke halogen-free flame-retardant B1-level wire
  • Crosslinked polyolefin insulating sheath-free low-smoke halogen-free flame-retardant B1-level wire
  • Crosslinked polyolefin insulating sheath-free low-smoke halogen-free flame-retardant B1-level wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] See figure 1 This embodiment provides crosslinked polyolefin insulation without a low smoke-free halide flame-retardant B1 wire, including conductor 1, band layer 2, flame retardant layer 3, and protection insulating layer 4, from within and outside, and protective insulation. The layer 4 includes an inner insulating layer 41, a layer of friction composite layer 5 and an external insulating layer 42, and the inner insulating layer 41 and the outer insulating layer 42 are made of crosslinked polyolefin. The friction composite layer 5 includes two layers of mutually superimposed friction layer 51.

[0025] In this embodiment, the thickness of the two friction layer 51 is the same.

[0026] Alternatively, the thickness of the friction layer 51 of the outer layer is greater than the thickness of the inner layer friction layer 51.

Embodiment 2

[0028] See figure 2 This embodiment provides crosslinked polyolefin insulation without protective low-smoke halogen-free flame retardant B1 lines, and the difference from Example 1 is:

[0029] A two-layer clamping layer 6 is provided between the inner insulating layers 41 and the outer insulating layer 42, and the friction composite layer 5 is disposed between the two clamping layers 6, the elastic modulus of the clamp layer 6 is greater than the friction composite. The elastic modulus of layer 5. The clamp layer 6 is used to clamp the fixing friction composite layer 5, and since the elastic modulus of the clamping layer 6 is larger than the elastic modulus of the friction composite layer 5, the pulse of the clamping layer 6 is smaller than the friction layer. The pull-down deformation of 51 hinders the stretching and compression of the friction layer 51 such that the shear strain and shear stress is generated inside the friction composite layer 5, and the shear effect of the fri...

Embodiment 3

[0033] See image 3 This embodiment provides crosslinked polyolefin insulation without protective low-smoke halogen-free flame retardant B1 wire, and the difference from Example 2 is:

[0034] The number of clamping layers 6 is three layers, and the number of friction layer 51 is two layers, the thickness ratio of the friction composite layer 5 and the clamping layer 6 is 1: 1. The intermediate layer clamping layer 6 is supported.

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Abstract

The invention relates to the field of wire preparation, and provides a crosslinked polyolefin insulating sheath-free low-smoke halogen-free flame-retardant B1-level wire, which comprises a conductor, a wrapping tape layer, a flame-retardant layer and a protective insulating layer from inside to outside, and is characterized in that the protective insulating layer comprises an inner insulating layer, at least one friction composite layer and an outer insulating layer; the friction composite layer comprises a plurality of friction layers which are mutually overlapped, the inner insulating layer and the outer insulating layer are both made of cross-linked polyolefin, the friction composite layers which are overlapped can effectively dissipate vibration energy, and normal use of the wire is guaranteed.

Description

Technical field [0001] The present invention relates to the field of fabrication of wire and cable, in particular, a crosslinked polyolefin insulation without a low-smoke halogen-free flame retardant B1 wire. Background technique [0002] The unpacking cable is an auxiliary device for the production of daily life, office environment and corporate production, is used for the auxiliary device for electricity delivery of daily electrical, office appliances and production equipment, which is obtained in the fields of daily life and office production. Extensive use; existing unparalleled cables include cores, functional layers, insulating layers, copper cores are circular; functional layers may include a shielding layer, a flame retardant layer or a refractory layer. [0003] The existing cable is limited, and when the cable is distributed to a high vibration external environment, the cables are easily rubbed between each other, thereby damaging the mechanical strength of the wire and...

Claims

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Application Information

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IPC IPC(8): H01B7/29H01B7/02H01B7/18
Inventor 郭智昊
Owner 福建成田科技有限公司