Flame-retardant polyester adhesive tape base material

Abstract

The invention discloses a flame-retardant polyester adhesive tape base material. The adhesive tape base material comprises a polyester chip, a dispersing agent, a heat stabilizer, magnesium hydroxide, nano-zinc oxide and a functional auxiliary; the functional auxiliary is of a microcapsule structure, the particle size range of the microcapsule structure is 10-100 microns, the thickness ratio of a wall material to a core layer is 1:18-1:22, the core layer is composite powder, and the wall material is a polyester film; the composite powder is a mixture which contains titanium dioxide and silicon dioxide, and the particle size range is 50-100 nm. The adhesive tape base material has the advantages of good heat resistance and mechanical strength, flame retardation, good toughness, good transparency and the like.

Description

technical field [0001] The invention relates to the field of polyester films. More specifically, the present invention relates to a flame retardant polyester tape substrate. Background technique [0002] Generally, tapes comprising a tape substrate (hereinafter referred to as substrate) composed of polyvinyl chloride (hereinafter referred to as PVC) have excellent mechanical properties, fire resistance, heat deformation resistance, electrical insulation, etc., and are relatively economical. Widely used as insulating tape for electrical equipment in the fields of vehicles (such as automobiles, trains, buses, etc.), aircraft, ships, houses, factories, solar cells, etc. In particular, tapes that are wrapped around wire harnesses such as automobiles, coils of home appliances, and electric wires are required to exhibit fire resistance and high heat deformation resistance. In order to meet these requirements, tapes based on PVC have been widely used. However, PVC produces harmfu...

AI Technical Summary

Problems solved by technology

However, PVC produces harmful gases. In order to impart fire resistance, a large amount of flame retardant needs to be added, resulting in uneven tape and affecting the bonding ability. In this case, consider using softer olefin resin as the base material of the tape. However, poly Olefin materials are inherently combustible, and in order to impart flame retardancy, inorganic metal compounds such as metal who and I are often added in consideration of environmental aspects because they generate highly safe combustion gases

However, in order to achieve high flame retardancy, it is necessary to add a large amount of inorganic metal compounds, which in turn causes problems such as reduced mechanical properties, damaged appearance, poor processability, etc.

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