1, temperature resistance and aging resistance is different.
2, PVC contains chlorine, smoke smell after burning, and the book has a certain flame retardant, chemical formula for (-CH2-CHCl-) colour diversity, more common daily, a long time in the sun will crack, relatively soft PE.
3, PE no smoke, much lighter than PVC, flammable, the chemical formula is (-CH2-CH2-), also afraid of light, often black
4, to distinguish in the actual words, lighter a little, smell the smell, see if there is ash after burning (PVC has, PE did not), see the degree of flammability can be distinguished.
Extension.
(1) polyvinyl chloride, referred to in English as PVC (Polyvinyl chloride), is vinyl chloride monomer (vinyl chloride monomer, abbreviated as VCM) in peroxide, azo compounds and other initiators; or in the role of light, heat, according to the mechanism of free radical polymerization reaction polymerization.
Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins.
(2) PVC is an amorphous white powder with a small degree of branching, a relative density of about 1.4, a glass transition temperature of 77--90°C, and decomposition starting at about 170°C.[1] It has poor stability to light and heat, and will decompose above 100°C or after prolonged exposure to sunlight to produce hydrogen chloride, and further auto In practice, stabilisers must be added to improve the stability to heat and light.
(3) Polyethylene (polyethylene, PE) is a thermoplastic resin made by polymerisation of ethylene. In industry, it also includes copolymers of ethylene and small amounts of alpha-olefins. Polyethylene is odourless, non-toxic, feels like wax, has excellent resistance to low temperatures (the lowest use temperature can reach -100 --- 70 ° C), good chemical stability, can resist the erosion of most acids and bases (not resistant to acids with oxidation properties). Insoluble in general solvents at room temperature, small water absorption, excellent electrical insulation.
PVC sheath is a kind of flat cable made of insulating material wrapped with multiple strands of copper wire stranded conductors, pressed together by sheath material through high-tech automatic equipment production line, with the advantages of softness, random bending and folding, thin relative thickness, small volume, simple connection, easy disassembly, etc. The number of wires and spacing can be chosen at will, making it easier to connect the wires, greatly reducing the volume of the product, reducing production costs and improving production efficiency, suitable for data transmission cables or power transmission in electrical equipment. Common specifications include 0.5mm, 0.8mm, 1.0mm, 1.25mm, 1.5mm, 2.0mm, 2.5mm and other flexible cable spacing.
Range of applications
PVC sheathed spiral cable wire, an economical spiral cable wire for the connection of equipment that is not highly resilient. This cable is used as a retractable control cable for a wide range of control units with round-trip movement requirements, such as machine tools, production lines, robots and power tools.
