Polypropylene, also known as pp, is a thermoplastic polymer. It can produce various molecular weights by changing the polymerization conditions during production. They are usually used in the manufacture of other items in the form of powders, fibers and granule. Products made of thermoplastics usually use polypropylene granule as input raw materials. The polypropylene granule are simple thermoplastics, made into granular materials with a diameter of about 3 mm. These polypropylene granule are then melted for use by manufacturers of various products. But do you know about it?
Chemical resistance: Diluted alkali and acids are not easy to react with polypropylene, which makes it an ideal choice for containers containing liquids such as detergents and first aid products.
Elasticity and toughness: Polypropylene granule will play an elastic role in a certain range, so they are usually considered "tough" materials. Toughness is an engineering term defined as the ability of a material to deform without breaking.
Insulation: Polypropylene granule has very high electrical resistance and is very useful for electronic components.
Fatigue resistance: Polypropylene granule can retain its shape even after repeated twist, bend or flexure.
Transmittance: Although polypropylene granule can be made transparent, the color usually produced is naturally opaque. Polypropylene granule can be used in some applications where light transmission is important or has aesthetic value. If applied to the case of high transmittance, then acrylic will be one of the better choices.
It can be used in the manufacture of carpet fibers, auto parts, ropes, thermal underwear, stationery, reusable containers, laboratory equipment, polymer banknotes, packaging applications, medical equipment, etc.
It can withstand many chemical solvents, including diluted acids and alkalis.
It has sufficiently high heat resistance, with a melting point of 160 or 170 degrees Celsius
It can be dyed to produce different colors.
It has high tensile strength and the best weight-to-strength ratio.
Due to its semi-crystalline nature, it has high bending strength
It is easily available and relatively cheap.
It has a relatively smooth surface.
It is very resistant to moisture absorption.
It has good impact strength.
It is a good electrical insulator.
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