elongation of the specimen. The device will determine the yield strength‚ tensile strength‚ tensile modulus‚ breaking load and maximum load. 3. Theory 1) Molecular arrangement The polymeric materials that are put to the test are General Purpose Polystyrene (GPPS)‚ High
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loss to the surroundings. MATERIALS The materials to be used in this experiment are: • Lithium‚ sodium‚ and potassium metal are the three Group 1 elements and reactants. • Distilled water is a reactant. • 250ml beaker to measure the water. • Polystyrene cup to hold the water. • Knife to cut the metals. • Digital balance to measure the mass of the metals. • Calorimeter to trap the heat during the reactions. • Thermometer to measure the initial and final temperatures during the reaction. • Paper
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0.15 - 0.25 Oak Oak (parallel grain) 0.62‚ 0.481) Oak Oak (cross grain) 0.54‚ 0.321 0.0721 Paper Cast Iron 0.20 Phosphor- bronze Steel 0.35 Platinum Platinum 1.2 0.25 Plexiglas Plexiglas 0.8 0.8 Plexiglas Steel 0.4-0.5 0.4 - 0.5 Polystyrene Polystyrene 0.5 0.5 Polystyrene Steel 0.3-0.35 0.3 -
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renewed ‘Yakult Joa’ - Japan. http://www.dairy-sustainability-initiative.org/Public/CaseStudy.php?ID=1219 (accessed September 29‚ 2013). With the renewal of Yakult design in October 2008‚ Yakult have changed its container design by having to apply polystyrene instead of aluminum to the caps of the bottle. These would make the entire container all plastic which is considered to be environmentally friendly With this higher recyclability of the container achieved‚ the impression created for consumer
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itself is called polystyrene. Like so many other plastics‚ it’s all around us –very commonly used in packing material as peanuts or expanded foam‚ in food trays and a wide variety of other products - even explosives such as napalm and hydrogen bombs. When you mix Styrofoam with gasoline‚ the Styrofoam breaks down. All the air inside escapes and it becomes a wet‚ gooey mess. If left out to dry‚ it gets hard again‚ but not like before. Without the air - it resembles plastic. Polystyrene is an aromatic
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her new merchandise in foamed polystyrene with recognition. The position Preston works was to find new products‚ and to develop more profitable applications for the company; nevertheless‚ she faced some unforeseen difficulties because of the new product. Preston had heavy stress from her managers because she needed to find out the new products that could satisfy the needs of her new product in the foamed polystyrene. A method that uses foamed polystyrene to make dome-shaped roofs and
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chord length. Concepts During my research on the gliders‚ I came across 3 interesting designs: 1) Polystyrene Glider Materials required: Cardboard‚ polystyrene tray‚ pencil‚ eraser‚ knife‚ some presticks. Procedure: Draw the shapes of fuselage‚ wing and tail on the polystyrene and cut it. Wings should not be too long rather should be thin. The drawings must fit onto the polystyrene tray. Using a knife‚
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Many examples of polyethene that are commonly found in households include‚ milk bottles‚ bins and microwave wraps. PVC and polystyrene: While ethene by itself is not particularly useful‚ it can be used to produce chemicals such as vinyl chloride (CH2=CHCl) and styrene (CH2=CH(C6H5)) which in turn can undergo polymerization to produce polyvinyl chloride (PVC) and polystyrene respectively. Traditional materials like rubber‚ steel‚ ceramics and glass are often replaced with PVC as it is a very versatile
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INVESTMENT CASTINGS PRODUCED BY USING EXPANDABLE POLYSTYRENE PATTERN Nikhil Yadav1 and D. B. Karunakar2 1 2 M.Tech Scholar‚ Mechanical & Industrial Engg. Deptt.‚ IIT Roorkee‚ Roorkee‚ India Assistant Professor‚ Mechanical & Industrial Engg. Deptt.‚ IIT Roorkee‚ Roorkee‚ India ABSTRACT The present study is concerned with the investigation of mechanical properties of A713 alloy castings produced by investment casting process using expandable polystyrene as the pattern material and the plaster of paris
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Lab #4 The Synthesis of Organic Polymers CHM2123‚ Section C October 21‚ 2014 Introduction: Organic polymers are macromolecules that are composed of smaller molecules called monomers. There are two main groups of polymers: natural polymers and unnatural (synthetic) polymers. Natural polymers include proteins such as cellulose and starch and are a necessity for our existence. On the other hand‚ synthetic polymers such as the polycarbonate in our lab goggles
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