A kind of halogen-free flame-retardant f-class high-temperature-resistant polyester heat-shrinkable tube for electrician and preparation method thereof

Abstract

The invention discloses a halogen-free flame-retardant F-class high-temperature-resistant polyester heat-shrinkable tube for electrical engineering. The heat-shrinkable tube comprises the following components in parts by weight: 70-90 parts of polyethylene naphthalate, 10-30 parts of low-melting-point polyphenylene sulfide, 0.1-2 parts of a stabilizer and 0.5-10 parts of color masterbatch, wherein the polyethylene naphthalate is a polyester material formed by condensation polymerization between 2,6-naphthalene dicarboxylate and ethylene glycol, or a polyester material formed by condensation polymerization between 2,6-naphthalic acid and ethylene glycol; and the low-melting-point polyphenylene sulfide is a material formed by taking water-containing sodium sulfide and paradichlorobenzene as monomers, combining normal-pressure and high-pressure polymerization and performing polymerization. The heat-shrinkable tube disclosed by the invention is applied to the fields of insulation protection and appearance identifier distinguishing of capacitors, batteries, electric machines, motors, transformers, heat exchangers and electric heating components, and the requirements on the polyester heat-shrinkable tube with the flame-retardant, halogen-free and environment-friendly requirements are met.

Description

technical field [0001] The invention relates to a heat-shrinkable tube made of polyester which has the characteristics of halogen-free flame-retardant and high-temperature resistance, and its appearance identification distinguishes its use, and its temperature-resistant grade reaches Class F (155°C) and a preparation method thereof. The invention is applied in the field of insulation protection and appearance identification of capacitors, batteries, motors, motors, transformers, heat exchangers and electric heating components, and satisfies the requirements of flame retardant and halogen-free and environmentally friendly polyester heat shrinkable tubes. Background technique [0002] At present, the heat-shrinkable materials used in the packaging of capacitors, batteries, motors, motors and other products on the market mainly include PVC heat-shrinkable tubes (films), PET heat-shrinkable tubes (films), POF heat-shrinkable tubes (films) and special polyester heat-shrinkable tub...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: to solve the problem that the long-term service temperature of the existing conventional electronic and electrical heat shrinkable materials cannot exceed 155°C, and the present invention provides a halogen-free flame-retardant, high-temperature-resistant polyester heat-shrinkable material for electrical , the material can be used for a long time in the temperature range of 155°C; at the same time, the invention also provides a preparation method of the material

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