Polypropylene, PP is a thermoplastic polymer used in a wide range of applications including film and sheet, blow molding, injection molding, food packaging, textile, laboratory and medical equipment, tubes, industrial applications and building components and automotive components.
Polypropylene,PP is one of the most universal and widely used plastics in the world, which was manufactured on a laboratory scale for the first time in the 1950s by the polymerization of monomeric propylene by the Ziegler-Natta method with the structure n (CH2CH (CH3) -), and in 1954 Its production began.
Polypropylene ,PP is a linear hydrocarbon polymer, expressed as CnH2n. PP, like polyethylene HDPE, L/LLDPE, PB, is a polyolefin or saturated polymer. Polypropylene is one of those most versatile polymers available with applications, as a plastic and as a fibres, in virtually all of the plastics end-use markets.
The properties of Polypropylene, PP
Some of the most significant properties of Polypropylene, PP
Semi-rigid: Polypropylene will act with elasticity over a certain range of deflection (like all materials), but it will also experience plastic deformation early on in the deformation process, so it is generally considered a "tough" material.
Translucent: although polypropylene, PP can be made transparent, it is normally produced to be naturally opaque in color. polypropylene can be used for applications where some transfer of light is important or where it is of aesthetic value. If high transmissivity is desired then plastics like acrylic or polycarbonate are better choices.
Good chemical resistance: Diluted bases and acids don’t react readily with polypropylene, which makes it a good choice for containers of such liquids, such as cleaning agents, first-aid products, and more.
Good fatigue resistance: Polypropylene, PP retains its shape after a lot of torsion, bending, and/or flexing. This property is especially valuable for making living hinges.
Good heat resistance
Polypropylene, PP has a very high resistance to electricity and is very useful for electronic components.
Water absorption, Polypropylene is highly impermeable to water. In a 24-hour soak test, the material absorbs less than 0.01% of its weight in water. This makes polypropylene ideal for total immersion applications where the basket material underneath has to be protected from exposure to various chemicals.
Operating temperature,the maximum recommended operating temperature for polypropylene is 180°F (82.2°C).
Melting temperature, at 327°F (163.8°C), polypropylene, PP will melt. This makes polypropylene unsuited to high-temperature applications of any kind.
Impact Tolerance, while polypropylene,
PP has a good tensile strength, its impact resistance leaves something to be desired when compared to polyethylene.
The grade of Polypropylene, PP
Polypropylene, PP usage
Polypropylene, PP has been especially developed for extrusion - thermoforming and ﬁlm applications where high rigidity, outstanding transparency and very good thermal characteristics are needed. Typical applications of polypropylene include transparent food containers, containers for high temperature ﬁlling as well as any applications where high gloss and high stiffness are required. The composition of the product complies with FDA norms and with regulations in force in major European countries food contact applications.
Polypropylene, PP are widely used in the production of pipes, textile fibers, household appliances, toys, electronic components, writing instruments, medical components ,cable covers, fishing gear and fishing gear, furniture and thousands of other uses.
Polypropylene, PP used parts for the automotive industry, textile , bags, big bags, rope, plates, bottles, medical supplies, brushing, carpet fibers, rope, nonwoven, battery container, paint box, thin walls, and packaging box (e.g. crisps, biscuits, etc.), food paketlemesine , fittings, fibres for carpets, sports clothing , washing machine drums, battery cases, bottle caps and so on production.
Note: Polypropylene, PP is not recommended for any high-temperature processes because of its low melting point. Additionally, any processes that use oxidizing acids, chlorinated hydrocarbons (such as trichloroethylene), and aromatic solvents should be avoided.
Advantages and Disadvantages of Polypropylene, PP
Good chemical resistance. Good fatigue resistance. Better temperature resistance than HDPE. Lower density than HDPE, but disadvantages is: Oxidative degradation is accelerated by contact with certain materials, e.g. copper. High mold shrinkage and thermal expansion. High creep. Poor U.V. resistance.
Polypropylene, PP Packing:
You can buy Polypropylene, PP in plastic bag 25 Kg, or 1 ton jumbo bag
You can buy Polypropylene, PP from ShinaDT because: as one of today’s leading suppliers of methanol, ShinaDT offers a wide range of proven, consistently high-performing materials to help our customers succeed.
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