polymer processing

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The pipe sector is one of the most challenging construction sectors today. Economic pressures have led to fewer construction projects in many major markets, while specifiers have been increasingly expected to balance higher performance with reduced cost. Today's plastics provide the opportunity to overcome these challenges. The economic and environmental benefits achieved by plastic pipe are an outcome of features including: Zero corrosion — Plastics resist corrosion from water and many chemicals, reducing wear and tear and increasing longevity. Increased flexibility — Easy to install, even at low temperatures. Durable and tough material — Plastic pipes give a high resistance to fracture and fatigue Leak-free joint fusion — Buttwelding, socket welding, electro-fusion fittings Light weight materials — The light weight of plastic contributes to reducing man hours and the need for heavy equipment, such as cranes. Plastics are also easier to transport and store. Easier installatio...

Material Dynamic viscosity, Pa·s Air (temp. 20 0 C) 10 -5 Water (temp. 20 0 C) 10 -3 Mercury (temp. 20 0 C) 1,5·10 -3 Aluminum (temp. 700 0 C) 1,1·10 -3 Zinc (temp. 700 0 C) 1,7·10 -3 Iron (temp. 1400 0 C) 6·10 -3 Blood (temp. 37 0 C) 10 -2 Oil 10 -2 -10 0 Honey 10 1 Melted polymers 10 2 -10 4 Cake 10 3 -10 5 Cheese 10 7 -10 8 asphalt 10 8 Melted glass (temp. 500 0 C) 10 12 Glass 10 40

All you have to do is one click on the picture and then experiment with available options Polyethylene, PE Polypropylene, PP Polyvinyl chloride, PVC

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After plastic cards it is time to polymer banknote. For hundreds of years, banknotes have been made from rag-based paper. Today, banknote issuers are faced with the challenge of increasingly sophisticated counterfeiting techniques and there are serious doubts that paper remains a viable material for secure banknotes. CSIRO’s expertise in polymer and synthetic chemistry was used to develop a non-fibrous and non-porous plastic film, which the banknotes are printed on. This substrate gives high tear initiation resistance, good fold characteristics and a longer lifetime than paper. The substrate and the specially-developed protective overcoat prevent the absorption of moisture, sweat and grime so that the polymer banknotes stay cleaner. CSIRO has also developed a variety of overt and covert security features for use on polymer banknotes. These security features are produced from a combination of spectroscopic techniques, synthetic chemistry, nanotechnology, surface science microstructu...

For full story please visit University of Waikato web site. There will be no comment this time. The new process, developed over two years by University of Waikato chemical engineer Dr Johan Verbeek and Masters student Lisa van den Berg, can turn animal protein waste like blood meal and feathers into a biodegradable plastic using industry-standard plastic extrusion and injection moulding machinery. A process developed at the University of Waikato will allow animal waste to be turned into useful and biodegradable plastic. "Proteins are polymers so we know they can be turned into plastics," Dr Verbeek said. "Plant proteins successfully been used to make bioplastics, but animal protein has always ended up gumming up the extruder. The process we've developed gets round that problem. People said it couldn't be done, but we did it!" It's a source of plastic that doesn't rely on petroleum, so we also see it potentially being blended with conventional plas...

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