Insulation reinforcing mat for cable and preparing method thereof

Abstract

The invention relates to an insulation reinforcing mat for a cable and a preparing method thereof. The mat is formed by mixing 80-92% of glass fiber water drawing wires and 8-20% of CO-PET/PET fiber by weight. The preparing method comprises the steps of raw material beating, mixing, matching, forming and finished product collecting. In the adopted material and in the machining process, no adhesive is added, and therefore the insulation reinforcing mat for the cable has the advantages of being uniform in thickness and mass area ratio, high in insulating coefficient, good in heat-bonding effect and the like.

Description

technical field [0001] The invention relates to an insulating reinforced thin felt for cables and a preparation method thereof, which are used for compounding mica tapes with cable mica tapes to improve product performance. Background technique [0002] The development process of wire and cable is essentially a process of material replacement. With the development of science and technology, people have put forward higher requirements for the physical and mechanical properties and fire resistance of insulator materials, and the existing rubber or plastic insulators can no longer meet the market requirements. Mica has good heat resistance, especially mica tape made of reinforcing material, has been used more and more for wire wrapping insulation. [0003] Mica tape is a composite insulating material, mainly composed of three materials: dielectric material, reinforcing material, and adhesive. In the existing technology, there is no reinforcing material, which has both the mec...

AI Technical Summary

Problems solved by technology

[0004] In the preparation of existing thin felt reinforcing materials, most of them use raw materials to mix and then beating and stirring. After gluing, they enter the forming mesh belt to dry to become semi-finished products, and then wind them into finished products. In this traditional preparation process, beating often occurs. Stirring is uneven, there are flocculent fibers in the slurry, and the slurry is pumped into the forming mesh belt and laid unevenly, resulting in uneven thickness of the wet felt, which directly affects the quality of the finished thin felt

Moreover, the fire-resistant and insulating properties of the thin felt produced by chemical adhesives can no longer meet the market demand