The melt flow index (MFI) is a measure of the ease of flow of the melt of a thermoplastic polymer. It is defined as the mass of polymer, in grams, flowing in ten minutes through a capillary of a specific diameter and length by a pressure applied via prescribed alternative gravimetric weights for alternative prescribed temperatures.Polymer processors usually correlate the value of MFI with the polymer grade that they have to choose for different processes, and most often this value is not accompanied
E3: The Melt Flow Rate of Different Polymeric Materials Objectives: 1) To learn the operating procedure of TWELVindex 2) To determine the melt flow rate of different polymeric materials Introduction: Melt flow index is given by the weight of the extrudate in gram per 10 min [1]. Referring to Figure 1.1, the melt flow index measured according to Condition-E (190°C, 2160g) which is the normal condition for polyethylene is called “Melt Index (MI)”. Polypropylene requires Condition-L (230°C, 2160g) because
8.3 Rheological properties of WPC Rheological behavior helps to elucidate the fundamental flow behavior of composite melts, and can directly or indirectly reflect the processing performance, internal structure, and physical and mechanical performance of WPCs. For the economical consideration, researchers are attempted to incorporate high amount of wood flour. So, a clear insight of the rheological behavior is necessary in such high wood content to facilities the processing. In addition, additives
INTRODUCTION What is polymer? The term name of polymer came from ancient greek, poly and mers meaning many parts. Polymer consist a very large molecule comprising hundreds or thousands of atoms formed by successive linking of one or two, occasionally more, types of small molecule in chain or network structures. In Fig 1, this specific molecular structure (chainlike structure) of polymeric materials is responsible for their intriguing mechanical properties. Polymer architecture can vary.
Wikipedia states “Nucor Corporation, a Fortune 300 company headquartered in Charlotte, North Carolina, is the largest steel producer in the United States, and the largest of the so-called "mini-mill" steelmakers (those using electric arc furnaces to melt scrap steel, as opposed to companies operating integrated steel works with blast furnaces). Nucor is North America's largest recycler of any material, recycling one ton of steel every two seconds. The company's total annual steelmaking capacity roughly
1. Despite being in a dangerous location, the slopes of volcanoes can be attractive to people setting up homes due to the rich, fertile soil 2. According to scientists, in the last 500 years approximately 20,000 people have died as a result of volcanic eruptions 3. A volcano is landform (generally a mountain) where, during an eruption, ash, gas and molten rock (magma) escape through the Earths surface 4. Approximately 1 in 10 people in the world live within danger range of an active volcano
needed in order to understand the complicated science behind volcanoes. Background Formation Volcanoes vary in shape, size, and type. Likewise, volcanoes have varied eruption styles, from beautiful fiery displays of explosive lava to pyroclastic flows of hot gases and ash. A volcano is an opening in the Earth’s surface where magma has erupted or poured through, generally resulting in hills or mountains (Abbott, 2014). This natural phenomenon has spawned a field of science known as volcanology
INDEX Introduction Distribution of Water At Earth Surface Types of Water Bodies Importance of Water Bodies Water Bodies and Pollution Introduction: What are water bodies? Water reservoirs, either natural or manmade are known as water bodies. Different names have given to these different bodies according to their size, properties etc. Moving water such as rivers or streams is also considered in the bodies of water. Numbers of types of water bodies are present in planet earth. About
The successful use of wood-based particles and fibers as fillers or reinforcements in thermoplastic composites requires an essential considerate of the structural and chemical personalities of wood [1]. English and Falk give an inclusive overview of the factors that influence the properties of wood–plastic composites [2]. While several studies have revealed that fiber-polymer compatibility can be improved by selecting appropriate coupling agents [3,4], compatibility between polar wood fiber and non-polar
1800-1802, 1831, 1835, 1842-1844, 1847-1854, 1857, 1980-? Present thermal activity: strong steaming Nickname: Mount Fuji of the West Remarks: continuous intermittent activity since 1980 with occasional eruptions of steam and ash; occasional pyroclastic flows; intermittent dome forming. MSH is considered a young volcano that developed over the last 40,000 years and is one of the most active volcanoes in the Cascade Range. Geologists predicted that the volcano would erupt before the year 2000. The May 18
degrees. The reason for these very low angle inclines is that the lava erupted from shield volcanoes is basaltic. Basaltic lava has a very low viscosity and high temperature. This causes it to flow for great distances before cooling and solidifying. Because of the great distances that the lava can flow these the height of these volcanoes winds up being only a fraction of what the width is. They range from a few kilometers in diameter to well over 100
The property of thermal inertia allows a substance, such as water, to resist change in temperature whether energy is gained or lost. The property of ice means that ice provides a moderating thermostatic effect even if it doesn’t get warm enough to melt. The property of water and air movement describes how water and air currents keep the equator from boiling. Salinity is the total concentration of dissolved inorganic solids in a body of water. It measures the total amount of salts in water. Salinity
Retrieved from on April 18, 2014 from http://www.studymode.com/essays/a-Comparison-Of-Henry-David-Thoreau-15625.html Titties (n.d.). A COMPARISON BETWEEN RALPH WALDO EMERSON & HENRY DAVID THOREAU? Retrieved from http://answers.yahoo.com/question/index?qid= 20080121080515AAI5fuJ Thoreau, H. D. (1854). Walden; or, life in the woods. Retrieved from http://www.gutenberg.org/files/205/205-h/205-h.htm Emerson, R. W. (1907). The American scholar. In Essays. Retrieved from http://www.gutenberg.org/files/16643/16643-h/16643-h
Polyethylene Vinylacetate (EVA) Student Name Pathik Patel, ID Number #20638625; E-mail: pd6patel@uwaterloo.ca 1. Introduction and Applications: Ethene, but-3-enoic acid (IUPAC name), commonly known as poly(ethylene-vinyl acetate) (PEVA), as the name suggest, is the copolymer made up of ethylene monomer and vinyl acetate (VA) monomer. It is produced by addition reaction mechanism with free radical initiation. It has a chemical formula of (C2H4)n(C4H6O2)m. Depending upon the weight percent
Bibliography: Works Cited Blashfield, Jean F., et al. Global Warming. Children's Press, 1991 "Global Warming" Microsoft Encarta CD-ROM, Microsoft Corporation, 1997 ed. "EPA Global Warming", http://www.epa.gov/globalwarming/( 27 Nov. 1999) "Index of /gwcc", http://www.gcrio.org/gwcc/ (27 Nov. 1999)
There is evidence of glass making from as early as 4000 BC. Back then it was mostly used for the coating of stone beads. It was 1500 BC when the first hollow glass container was made. It was made by covering a sand core with a layer of molten glass. It was during the First Century BC that glass blowing became more common. At this time glass was high coloured due to the impurities of the raw materials that were used to make it. The first recorded colourless glass was made in First Century AD. The
The intent of existing investigation was to formulate nitrile butadiene rubber (NBR)/high density polyethylene blends (HDPE) blends using industrial waste (MW) and compatibilized by Chloroprene rubber (CR). Results indicated that the minimum and maximum torque increased with increasing HDPE amount in the blends, whereas scorch, and cure time showed the decreasing trend. Increment in HDPE increased the tensile strength, modulus, tear strength, hardness and crosslink density. % tensile strain, % compression
There are over 600 million tons of recyclables being handled by almost 2 million people worldwide every year (BIR). This is the result of the ever growing concern of waste and CO2 emissions across the globe. Recycling is a controversial topic because many were taught that recycling is the most influential way to reduce environmental impact. However, according to the New York times, “Recycling may be the most wasteful activity in modern America: a waste of time and money, a waste of human and natural
The word “photography” derives from two Greek words: Phos (meaning “light”) and Graphe (meaning “writing” or “drawing”). Thus, photography implies, literally, “writing or drawing with light”, in turn implying combination of something that occurs naturally (light) with practices created by human culture (writing and drawing). Generally, photographs are understood to have a direct connection to what they depict- providing the impression that they show “reality”. They are often also seen as being
built in HYPERMESH software. Analysis is done using RADIOSS software. Index Terms: non-vented Disk Brake, Hyper Mesh, RADIOSS,