Preparation process of PET (polyethylene terephthalate) material capable of realizing temperature barrier

Abstract

The invention relates to a preparation process of a PET (Polyethylene Terephthalate) material capable of realizing temperature barrier. The preparation process comprises the following steps: polymerizing ethylene and norbornene to prepare additive particles; adding the additive particles and the regenerated PET particles into a heating container for melting and mixing, and adding the nano SiO2 particles after fully mixing, so as to obtain the PET material with the temperature barrier property; the obtained PET material is used for preparing a PET film, and then temperature barrier performance detection is carried out; and optimizing and adjusting the contents of various components in the material according to a detection result. Therefore, the PET material with excellent mechanical performance and temperature isolation performance can be obtained, and the PET material is suitable for large-scale production in factories.

Description

technical field [0001] The invention relates to the field of PET materials, in particular to a process for preparing PET materials with temperature barrier properties. Background technique [0002] In order to save resources, currently recycled PET material is a widely applicable material. And sometimes various functional designs are carried out for it according to the needs of the application, such as the realization of thermal insulation performance. PET material is widely used in the field of packaging due to its excellent properties, especially in the field of thermal insulation packaging. [0003] However, at present, in order to achieve better temperature barrier properties of PET materials, a method of coating is usually adopted during the film formation process, such as coating the surface with an aluminum film to improve the reflection effect of thermal radiation. However, this composite membrane has poor mechanical properties and is prone to peeling between membr...

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Problems solved by technology

[0006] Moreover, the traditional testing of material thermal insulation performance is usually done by professional institutions using professional instruments, and materials need to be specially and complicatedly fixed, and a single test usually takes tens of minutes or even hours.

Moreover, the detection requires a large amount of professional equipment, which can only be used in the laboratory and cannot be compatible with the configuration on the production line. It is not suitable for mass product testing and cannot be used for quick self-inspection by manufacturers

At present, some people have proposed to use image detection method for detection, but the layout of the detection process and the design of the algorithm cannot meet the requirements of accuracy and speed.

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