mechanical properties of plastics ppt

3. Humidity11. Strength. 2 The mechanical properties of concrete are dependent on many factors, such as the characteristics of the raw materials used, the curing conditions and the local concrete practice, which may vary from place to place. Therefore, PP is the commodity plastic with the lowest density. In this temperature range, they are usually seen as perfectly brittle materials: materials that deform only elastically, until they break. Low thermal conductivity. Annual Concrete Seminar 2015 Youth Square . Chapter 6: mechanical properties. Mechanical Properties of Local Concrete Dr. Ray SU The University of Hong Kong. The plastic properties on pages 222/223 are exclusively applicable for the specified standard test pieces. While some plastics are rigid and others flexible, all commercial materials showa degree of strength and toughness when stressed rapidly, superior to simple crystals and common glass. Plastic - Plastic - The processing and fabrication of plastics: The processing of raw materials into usable forms is termed fabrication or conversion. Appearance of Plastics2. Review the material properties/specifications of FEP plastic. Properties tables include physical, mechanical, thermal, electrical, etc. An example from the plastics industry would be the conversion of plastic pellets into films or the conversion of films into food containers. These chains fold together and form ordered regions called lamellae, which compose larger spheroidal structures named spherulites. Melting Point13. When assessing the mechanical properties of any material, it’s usually metals that we’re analysing. Experimental stress-strain plots of elastomers, plastics, block co-polymers, and fibers indicate differences among the polymers. By heat treating, a metal can be made harder, stronger, and more resistant to impact, heat treatment can also make a metal softer and more ductile. 1-800-553-0335. This chapter focuses on the mechanical properties and behavior of glasses below their glass transition temperature. Mechanical properties. Fire Resistance9. . The density of (PP) is between 0.895 and 0.92 g/cm³. properties, such as crystallinity or mechanical strength.2 If the quality is sufficient after sorting and reprocessing, the recycled materials can be reused in the same or similar pro - ducts. Electrical properties of polymers, elastomers, composites and plastic films are very important to a wide range of industries such as automotive, aerospace, building products, marine, packaging and consumer goods. This plastic database is available to all, free of charge. Email: Password: Stay logged in on this computer: Forgot Password? 03 Mechanical Properties of Materials.ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. How to Produce Polypropylene? Mechanical recycling is an essential tool in an environmentally and economically sustainable economy of plastics, but current mechanical recycling processes are limited by cost, degradation of mechanical properties, and inconsistent quality products. Sign in to access your web account. Review the material properties/specifications of Ultem® plastic. Some plastics may portray normally ductile behaviors, but when exposed to low temperatures may become brittle. The plastics PS, PP, PC and PE are valuable energy carriers to maintain incinerator temperature. Welcome Back! Here are some of the most common mechanical properties that define different types of metal: 1. Custom tailored to your material and … Sign in to access your web account. With lower density, moldings parts with lower weight and more parts of a certain mass of plastic can be produced. Permeable to light up to 92% for certain types. Plastics are materials made from chemicals and are not found in nature. What is PPS Made From? Mechanical Properties 121 Plastic Deformation • Simple tension test: (at lower temperatures, T < Tmelt/3) tensile stress, σ engineering strain, ε Elastic initially Elastic+Plastic at larger stress permanent (plastic) after load is removed εp plastic strain. Physical testing can help raw material suppliers and manufacturers to determine the properties of their products through Intertek’s vast range of testing methods. The plastic and packaging material used by OKW are on the whole harmless and, apart from some exceptions, can easily be recycled and reutilized. Careers; Locations; Ask a Plastics Expert; Cart Item Added Go To Cart. In addition to mechanical properties, it has been shown that conductivity, diffusion/solubility, and piezoelectric properties are also enhanced, and this opens the door to new application areas. 1. (pgd-ppt) syllabus & curriculum. ), applications, conversion mode and other dimensions for FREE! Factors that influence the mechanical properties of polymers Polymer applications Mechanical characteristics of polymers Polymers • lower elastic modulus with a wide range (7MPa-4 GPa) • lower tensile strength (order of 100MPa) • larger plastic deformation (possibly as high as 1000%) • mechanical behavior are more sensitive to It is important to understand the conditions that a product may endure to ensure that those conditions are replicated during testing. PLASTICS MECHANICAL CHARACTERIZATION MECHANICAL CHARACTERIZATION OF PLASTICS OUR SERVICES Characterizing the mechanical properties of thermoplastics is one of the core areas of competency at our institution. - Concordia UniversityMECH 221 lecture 20/3 Mechanical Properties of Polymers Schematic stress–strain curve for a plastic polymer showing how yield and tensile strengths are determined. Dimensional Stability4. Electric Insulation7. Strength17. Low electrical conductivity. 5. Abstract. There are a measure of strength and lasting characteristics of the material in service and are of good importance in the design of tools, machines, and structures.. For chemically resistant plastic, view our Chemical Resistance of Plastics chart. Email: Password: Stay logged in on this computer: Forgot Password? Crystallization of polymers is a process associated with partial alignment of their molecular chains. For example, tensile properties of plastics such as plastic tensile strength and rigidity can be determined according to DIN EN ISO 527 by briefly applying load in one direction with a tensile test. By recovering plastic materials for reuse, virgin plastic materials are replaced, contributing to a circular economy. Good mechanical properties, slightly brittle. Also, you may want to use our Plastic Material Selection Guide or Interactive Thermoplastics Triangle to assist with the material selection process based on your application requirements. {{cart.count}} Get a Quote. Polymers can crystallize upon cooling from melting, mechanical stretching or solvent evaporation. 29 April 2015, Youth Square, Chaiwan, Hong Kong . Their properties make them useful for objects such as cutlery, saucepans, cars and coins. 8. Chemical Resistance of Plastics3. Properties of Plastics Disposal and the environment The plastics used for our products are environmentally neutral during disposal. 1-800-553-0335. The plastic database allows you to filter your search based on property (mechanical, electrical etc. Durability of Plastics6. Fixing10. Table 2. Careers; Locations ; Ask a Plastics Expert; Cart Item Added Go To Cart. Plastics... ¾Engineering Mechanics of Composite materials, Daniel, I.M thermal degradation present. An example from the plastics used for our products are environmentally neutral Disposal. 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