PP [polypropylene]

PP (polypropylene) is a crystalline resin and is a representative general-purpose plastic. With a specific gravity of 0.9, it is the lightest in general-purpose plastics, and has excellent chemical resistance, hydrolysis resistance and electrical properties. It is widely used in various fields as a plastic with a wide range of applications. Polypropylene is a compound that has good rigidity and toughness at high temperatures. It can be used in steam sterilization applications. It has good wear resistance, low friction coefficient, non-absorbability, excellent electrical properties, and unique bendability. Excellent chemical resistance, stress and crack resistance. Polypropylene is also a low density, high surface gloss material. Polypropylene has the highest tensile strength in olefin products, and the polypropylene has a high tensile coefficient but relatively low impact resistance. Polypropylene has good fatigue resistance, excellent wear resistance, and a very low coefficient of friction comparable to nylon. However, nylon is self-lubricating, so wear resistance is better than polypropylene. Polypropylene has excellent chemical resistance and is resistant to dilute acids, concentrated acids (except oxidizing acids), alkalis, alcohols, detergents and water. Polypropylene is resistant to attack by aromatic hydrocarbon compounds, chlorine compounds, greases and petroleum at room temperature of 140°F.