Material Properties of Plastics 1.1 Formation and Structure The basic structure of plastics (or polymers) is given by macromolecule chains, formulated from monomer units by chemical reactions. Properties Polyethylene Polypropylene Polyvinyl chloride Cellophane Max. Polypropylene fibre is a major factor in home furnishings such as upholstery and indoor-outdoor carpets. prescription bottles. Dielectric strength depends on the temperature and the wall thickness of an item. It offers a great combination of properties such as lightweight, strong, high heat resistance, as well as stiffness and flexural retention. Figures - … Plastic bottle caps are often made from PP. Polystyrene is commonly recycled, but is difficult to do. Polypropylene Natural PPH / PP-DWST - Homopolymer Colour: Natural Density: 0.905g/cm³ Mechanical Properties Value Unit DIN/EN/ISO Tensile strength at yield 30 MPa 527/D638 Elongation at yield 8 % 527 Modulus of elasticity in tension 1600 MPa 527/D638 Impact strength No br. Among these and many other great properties, polypropylene is easily fabricated. Polypropylene has very good mechanical properties which result from regular structure and molecular weight distribution. kJ/m ² … Polypropylene is a very versatile material. Automotive Applications: Polypropylene is widely used in automotive parts because of its low cost, weldability, and mechanical properties. Items such as disposable coffee cups, plastic food boxes, plastic cutlery and packing foam are made from PS. This combination of performance properties gives polypropylene a position in the injection molding field that is unique among thermoplastics. Code 7 is used to designate miscellaneous types of plastic … Bending modulus of different fiber-reinforced polypropylene composites ([FRPCs] data from Refs 131, 133, 125, 135, 124, 116, 82, 92 and 58). Polypropylene is highly responsive to injection speed and pressure and sets up quickly in the mold, enabling molders to attain high production rates. heat tolerance (°C) 82-93 132-149 66-93 90-140 Min. Polypropylene is a good insulator with very low dielectric constant and low dissipation factor. PP, like polyethylene (see HDPE, L/LLDPE) and polybutene (PB), Polypropylene is a polyolefin or saturated polymer. Polypropylene is one of those most versatile polymers available with applications, both as a plastic and as a fibre, in virtually all of the plastics end-use markets It can mostly be found in battery cases and trays, bumpers, fender liners, interior trim, instrumental panels and door trims. 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