Mixed thermoplastic polyester and thermal-shrinkage double pipe therefrom

Abstract

A mixed thermoplastic polyester consists of polyester(A) 5-95wt% and polyester(B) 95-5wt%, polyester(A) is homo-polymer or multi-polymer polyethylene glycol terephthalate, intrinsic viscosity is between 0.8-1.2dl / g, polyester(B) is trimethylene glycol terephthalate, intrinsic viscosity is between 0.8-1.2dl / g. It can be used to produce thermoplastic double-pipe with protecting and insulating functions or coat various articles as labels.

Description

technical field The invention relates to a mixed thermoplastic polyester and a heat-shrinkable sleeve made of the mixed thermoplastic polyester, especially, the heat-shrinkable sleeve made of this has proper heat shrinkage after heat treatment. High efficiency, good heat resistance, chemical resistance and heat aging resistance; after the heat shrinkable sleeve is wrapped on the surface of the object, and then heated at a high temperature, it can still remain tightly attached to the coated object without expansion and relaxation. Spots or wrinkles, etc., so the heat shrinkable sleeve can provide insulation, protection, beautiful decoration or labeling for the covered object. Therefore, this heat-shrinkable sleeve is especially suitable for electrical insulation, for example, for the insulation of electronic and electromechanical components such as batteries, capacitors or electrical panels. Background technique The common electrical insulation heat shrinkable sleeve has b...

AI Technical Summary

Problems solved by technology

However, the above-mentioned prior art is not disclosed in the polyester material mixed with poly(trimethylene terephthalate) to make heat-shrinkable sleeve technology and its advantages