An irreplaceable raw material

Release time:2013-02-28      Source:admin      Reads:

PP is widely used to make plastic production such asseal tags. Traditionally, three manufacturing process are the most representative ways to produce polypropylene. Hydrocarbon slurry or suspension: Uses liquid inert hydrocarbon diluents in the reactor to facilitate transfer of propylene to the catalyst, the removal of heat from the system, the deactivation/removal of the catalyst as well as dissolving the ataxic polymer. The range of grades that could be produced was very limited.Polypropylene is a major polymer used in nonwovens, with over 50% usedfor diapers or sanitary products.

Many scientists are doing research to find other material to replace PP, but before that, PP will play a part in making seal tags for garments. The polymer does not dissolve into diluents, but rather rides on the liquid propylene. The formed polymer is withdrawn and any unreached monomer is flashed off. Gas phase: Uses gaseous propylene in contact with the solid catalyst, resulting in a fluidized-bed medium. As polypropylene is resistant to fatigue, most plastic living hinges, such as those on flip-top bottles, are made from this material. However, it is important to ensure that chain molecules are oriented across the hinge to maximize strength. Such applications could be seen in the house as water filters or air-conditioning-type filters.

The high surface area and naturally oleophilic polypropylene nonwovens are ideal absorbers of oil spills with the familiar floating barriers near oil spills on rivers. Very thin sheets of polypropylene seal tags are used as a dielectric within certain high-performance pulse and low-loss RF capacitors. Polypropylene is used in the manufacturing piping systems; both ones concerned with high-purity and ones designed for strength and rigidity. This material is often chosen for its resistance to corrosion and chemical leaching, its resilience against most forms of physical damage, including impact and freezing, its environmental benefits, and its ability to be joined by heat fusion rather than gluing.

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