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Classification of polymer materials
1. 2. The thermoplastic polymer material thermosetting polymer materials
Plastic packaging materials commonly used resin and additives
It refers to the plastic polymer material composition and various additives, and malleable material quality, which is composed of two kinds of resin additives and chemical composition of the main component.
Common resin
Polyethylene
PE (polyethylene, referred to as PE) is a thermoplastic resin polymerized ethylene obtained. In the industry, but also copolymers of ethylene with minor amounts of α- olefins. Polyethylene odorless, non-toxic, feel like wax, has excellent low temperature properties (lowest temperature up to -70 ~ -100 ℃), good chemical stability, resistance to most acid-base erosion (intolerance with oxidation properties acid), at room temperature, not soluble in common solvents, water absorption, excellent electrical insulation properties.
Polyethylene odorless, non-toxic, feel like wax, has excellent low temperature properties (lowest temperature up to -70 ~ -100 ℃), good chemical stability, resistance to most acid-base erosion (intolerance with oxidation properties acid), at room temperature, not soluble in common solvents, water absorption, but because of its linear molecules slowly dissolve in some organic solvents, and does not swell, excellent electrical insulation properties; but polyethylene for environmental stress (chemical and mechanical effect) is very sensitive, and poor heat aging.
Polyethylene nature because of different varieties, depending on the molecular structure and density.