Definition, Meaning & Synonyms | English word POLYPROPYLENE

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Definitions of POLYPROPYLENE

1. A thermoplastic resin made by the polymerization of propylene, and used for films, fibres, or moulding materials.

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Examples of Using POLYPROPYLENE in a Sentence

• Polyvinyl chloride (alternatively: poly(vinyl chloride), colloquial: vinyl or polyvinyl; abbreviated: PVC) is the world's third-most widely produced synthetic polymer of plastic (after polyethylene and polypropylene).
• Large graduated cylinders are usually made of polypropylene for its excellent chemical resistance or polymethylpentene for its transparency, making them lighter and less fragile than glass.
• Clipboards can be constructed from a variety of material, including but not limited to, hardboard, aluminum, PVC, polypropylene, High Impact Polystyrene, and Foamex.
• The pile was traditionally made from wool, but since the 20th century synthetic fibers such as polypropylene, nylon, or polyester have often been used, as these fibers are less expensive than wool.
• Polyester makes up about 18% of world polymer production and is the fourth-most-produced polymer after polyethylene (PE), polypropylene (PP) and polyvinyl chloride (PVC).
• Cloth ribbons are made of natural materials such as silk, cotton, and jute and of synthetic materials, such as polyester, nylon, and polypropylene.
• They began working together in 1946, and in 1951 invented "crystalline polypropylene" and high-density polyethylene (HDPE).
• It may be made of hemp, cotton or linen, but also synthetic fibers such as nylon, polypropylene or polyester.
• Manholes are usually outfitted with metal, polypropylene, or fiberglass steps installed in the inner side of the wall to allow easy descent into the utility space.
• Examples of such polyolefins are polyethenes, polypropylene, PVC, Teflon, Buna rubbers, polyacrylates, polystyrene, and PCTFE.
• However, wax-resin compounds and full resins can be used on materials such as polypropylene or polyester in order to increase durability.
• The boat previously constructed from polypropylene, and now roto moulded, is popular as a racing boat or for sail training.
• Most permanent marker ink can be erased from some plastic surfaces (like polypropylene and teflon) with little rubbing pressure.
• Plastics exist in huge variety, however several types of commodity polymer dominate global production: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET, PETE), polystyrene (PS), polycarbonate (PC), and poly(methyl methacrylate) (PMMA).
• Mostly granulated plastic, early mixtures added only carbon powder and iron oxide; now there are mixtures that contain polypropylene, fumed silica, and various minerals for triboelectrification.
• Oriented polypropylene, and specifically BOPP (biaxially oriented PP), a polymer used mainly for packaging and labeling.
• The shell of a hockey helmet is generally made of a substance called vinyl nitrile that disperses force from the point of contact, while the liner may be made of either vinyl nitrile foam, expanded polypropylene foam, or other material to absorb the energy, to reduce the chances of concussion.
• In recent years, collectors of vintage toy soldiers made of polythene PE and polypropylene PP thermoplastics as well as PC/ABS plastic blends have reported brittling and disintegration of collectible miniatures or components thereof.
• A sandbag or dirtbag is a bag or sack made of hessian (burlap), polypropylene or other sturdy materials that is filled with sand or soil and used for such purposes as flood control, military fortification in trenches and bunkers, shielding glass windows in war zones, ballast, counterweight, and in other applications requiring mobile fortification, such as adding improvised additional protection to armored vehicles or tanks.
• Butene can be used as the monomer for polybutene, but this polymer is more expensive than alternatives with shorter carbon chains such as polypropylene.

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