What is the difference between PET material and PE? -Film supplier

by:POLYVA     2021-12-08
Polyethylene terephthalate (PET) PET film raw material polyethylene terephthalate is a colorless transparent substance (amorphous) with a certain gloss, or an opaque milky white substance (crystalline type). It is difficult to catch fire and burn, but once it burns, although the flame is away, it can still continue to burn. When it burns, it will melt and burst into fragments. The flame is yellow, the edge is early blue, and there are droplets falling, black smoke, and mountains. With a slightly sweet, pungent smell. The performance of pure PET is very poor, especially the impact strength and heat resistance, but after glass fiber reinforced, various properties are greatly improved. Physical properties of polyethylene (PE): Polyethylene is non-toxic, tasteless and milky white. The density is 0.91~0.96g/cm3 for crystalline plastic. Polyethylene has a certain degree of mechanical strength, but compared with other plastics, its mechanical strength is low and its surface hardness is poor. Polyethylene has excellent insulation properties. Polyethylene is insoluble in any known solvents at room temperature, and it is resistant to dilute sulfuric acid, dilute nitric acid and other acids of any concentration, as well as alkali and salt solutions of various concentrations. Polyethylene has a high degree of water resistance, and its performance can remain unchanged after long-term exposure to water. Polyethylene has poor water vapor permeability, but has good permeability for oxygen, carbon dioxide, and vapors of many organic substances. Use temperature-weather resistance: polyethylene will age and become brittle under the action of heat, light and oxygen. Generally, the use temperature of high-pressure polyethylene is about 800C, and that of low-pressure polyethylene is about 1000C. Polyethylene is resistant to cold, has good mechanical properties at -600C, and still has a certain degree of flexibility at -700C. Is a company specializing in the production of PET film with multiple functions, such as: transparent PET film, milky white PET film, release PET film, supply of PET motor film, etc. With a wide variety of products, affordable prices, and environmental protection, we provide customers with excellent quality and service based on the service tenet of excellence in production, honesty and trustworthiness in distribution, and warm and thoughtful service. Interested parties welcome to inquire! Contact: Wen Feng 13728425799
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