What is the property of low density?

What is the property of low density?

Low density. Excellent resistance to acids, alcohols, bases and esters. Excellent electrical properties. Good resistance to aldehydes, ketones and vegetable oils (minor attack)

What is low density polyethylene used for?

Low density polyethylene (LDPE). This clear or translucent plastic exhibits flexibility, chemical resistance, and waterproofing capabilities. It is used in the manufacture of a wide range of products, including grocery bags, plastic wrap and film, flexible packaging material, and injection molded parts.

What is low density polymers and give it’s properties?

Low-density polyethelene (LDPE) is high clarity and chemically inert polymer that is widely used, owing to its flexibility, barrier properties, good impact strength, and stress crack resistance. It is also one of the more economic polymers available.

What is meant by low density polyethylene?

Low-density polyethylene (LDPE) is a thermoplastic made from the monomer ethylene. It was the first grade of polyethylene, produced in 1933 by Imperial Chemical Industries (ICI) using a high pressure process via free radical polymerization. Its manufacture employs the same method today.

How is low density polyethylene prepared?

LDPE is prepared from gaseous ethylene under very high pressures (up to about 350 megapascals, or 50,000 pounds per square inch) and high temperatures (up to about 350 °C [660 °F]) in the presence of oxide initiators. These processes yield a polymer structure…

What is the advantage of low density?

In addition, the low-density aggregates provide thermal insulation, internal curing (absorbed water may be released for hydration during curing), and better compatibility between the paste and the aggregate (lower elastic modulus of the aggregate).

What is low density polyethylene film?

LDPE is an abbreviation for Low Density Polyethylene. Polyethylene is made by polymerization of ethylene. Ethylene is obtained by cracking a light petroleum derivative such as naphtha. The low density is obtained by the high-pressure polymerization process. This creates molecules with many side branches.

What is low density polyethylene made of?

Low-density polyethylene (LDPE) is a thermoplastic made from the monomer ethylene. It was the first grade of polyethylene, produced in 1933 by Imperial Chemical Industries (ICI) using a high pressure process via free radical polymerization.

What is the difference between low density polyethylene and high density polyethylene?

LDPE’s long- and short-chain branches keep the material from packing tightly in its crystalline form. This gives it less tensile strength than HDPE, but greater ductility….In a nutshell: the chemistry of LDPE and HDPE.

How is low density polyethylene LDPE made?

LDPE Production Process Low-density polyethylene is manufactured by the process of the polymerization of ethylene at very high temperatures in a tubular reactor. In this tubular reactor, high-pressure polymerization allows further copolymerization of ethylene with polar co-monomers.