Descriptive Series Part 10 Poly(tetrafluoroethylene) - PTFE
One of the oldest and best known of the fluoropolymers is poly(tetrafluoroethylene), abbreviated PTFE. It is a partly crystalline material with many unique properties.
Descriptive Series Part 9 Poly(methyl methacrylate), PMMA
This polymer is often referred to in everyday language as "Plexi". Homopolymers and copolymers of methyl methacrylate are amorphous, water-clear, thermoplastic materials.
Descriptive Series Part 8 Polypropylene PP
Polypropylene is one of the most widely used and familiar plastics, and has also made its way into everyday life. Its relatively cheap raw material and production make it a mass product.
Descriptive series. Part 7
In the first part of this series, we mentioned some of the more important aspects that influence the engineering use of each structural material when comparing engineering plastics and metals. There are often cases where mechanical, thermal and tribological aspects are not decisive, but where cheap and fast production, adhesion and/or weldability, chemical resistance are important. Our technicians are beginning to realise that there are not only stainless steels, but also semi-finished products in the "cheaper end of the market" plastic materials. Technical literature classifies these products as 'mass-produced for technical use'. Such materials are e.g. PVC, PP, PE-HD. Now, in part 7 of this series, we will summarise basic information on PVC semi-finished products.
