Low-density polyethylene

Like PE pipes, PP pipes weigh very little and have a lower density than water, so they float. Applications: • Sanitation piping. • Evacuation of rainwater. • Pipes without pressure. Unions: The PP pipe joining system is by melting, so that the product is welded as a single piece, without joints. 6. Multi-layer pipes:

Today, global energy consumption heavily relies on fossil fuels, such as oil, coal and natural gas, in 2015, Australia relied 86% of the electricity generation on traditional non-renewable energy sources (73% coal, 13% natural gas).1 The burning of these fossil fuels has been very closely associated with carbon and greenhouse gas emission, resulting changes in the climate such as global warming and extreme weathers. The CO2 emissions had increased from estimated 198 megatons in 1850 to an astonishing

Polyethylene pellets are first melted, and then transferred through a die unit where the melted polymer is transformed into a circular tube bubble. Once cooled the bubble is destroyed in half at the end of nip rolls. The destroyed bubble later revolves to become

the water on the draw side, then the pressurised water flow pushes the turbine to generate electricity. Even though the theory of harnessing power by mixing high-saline water and low-saline water was first brought up in the 1950s, and the mechanism was first proposed by Leob in 1970s. PRO was not widely accepted due its low performance. And the use of reverse osmosis (RO) membranes was found to reduce the performance due to severe concentration polarisation. However, with the technological advancement

constituents are combined judiciously to achieve a system with better structural or functional properties than can be attained by any of the constituents alone. Composites are becoming an essential part of today’s materials due to advantages such as low weight, strong

Polymer is a compound consisting of long-chain molecules, each molecule made up of repeating unit connected together by a covalent bond. Most polymers are based on carbon and are therefore considered organic chemicals. Groover (2011) suggests that ?the word polymer is derived from Greek, poly and meros, meaning many and parts, respectively. Some scientists prefer to use the word macromolecules or large molecules, instead of polymer?. The polymers are created by connecting many small molecules forms

of polyethylene (PE), high density and linear low density polyethylene. [1] The production process involves the transportation of the liquid ethylene feedstock, via pipeline, to the plant site followed by the production of various PE resins (pellet form). These PE pellets are then sold to consumers for use in common applications such as bottles for milk and other non-carbonated drinks, drums, fuel tanks for automobiles, toys and household goods. Due to the fact that high density polyethylene (HDPE)

The experiments will Asses weather the mealworm is capable of digesting, not only polystyrene, but a more diverse set of plastics, including High-density Polyethylene (HDPE) and Low-Density Polyethylene (LDPE). The experiment will be conducted over a few weeks and will study the trends in the amount of plastic products are consumed over the chosen period of time, and to establish how effective they are at eliminating

four times and 50% of the plastic we use, we only use once and is thrown away. There is initiate ways for plastic bottles to be reused in a scientific way. We are investigating how the air pressure we can create in a bottle will affect how high or low it travels. In the process we will be reusing plastic bottles. Will the product inside of the bottle be significant to the explosion it will make? If a certain amount of alcohol is inserted in the bottle will the rocket malfunction? Materials:

plastic bag”; made from high density polyethylene, but It was in the late 1970s when Plastic bags first began to terrorize the well being of humanity. More and more supermarkets in America began handing out plastic bags as if they were candy on Halloween. The more plastic bags humans use, the more natural resources are being destroyed. There are two different types of plastic bags that one may find in any supermarket, high density polyethylene (HDPE) or low density polyethylene (LDPE). There isn’t much