Pipes/piping engineering plastic materials

Finally there is the third topic—muds and slurries. This includes not only their characteristics under static conditions but also their movement through pipes. Most muds and slurries act like plastic materials when flowing in pipes. The prediction of their flow properties in terms of readily determinable constants has important engineering applications. 

Several of the world s largest polymers companies have major operations in India. These include Momentive Performance Materials which was formerly GE Advanced Materials (GE was an early leader in the offshoring of engineering work to India), Bayer and BASF. Much of plastics production in India is PVC pipe and plastic films. 

Thermal Analysis involves differential scanning calorimetry (DSC) to identify various common engineering plastics. A thumbnail size sliver of the unknown material must be obtained from a location that will not impact the performance of the part, for example the outside edge of the gasket surface on a lined pipe or valve. The sample is sent to a laboratory that can perform DSC. See Figure 7-5. 

Hedstrom, B. O. A. 1952. Flow of plastic materials in pipes. Journal of Industrial Engineering Chemistry, 44, 651-656. 

There are many types of plastic materials with a range of properties that depend on the base polymer and the additives used. Plastics are used routinely in many commodity items such as packaging, pipe, clothing, appliances, and electronics. They are also increasingly being used in structural and engineering applications such as aerospace, building, and automotive. 

An incorporated technical organization founded in 1937 and serving the needs of the entire plastics industry in the U.S. It establishes standards for the properties and selection of materials and for product design and engineering. Its two major publications are the Plastics Engineering Handbook and the Reinforced Plastics Handbook. With it are associated the Plastics Pipe Institute and the Reinforced Plas-tics/Composites Institute. It is located at 1801 K ST NW, Suite 600K, Washington DC 20006. Website http //www.socplas.org. 

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