font-weight: bold; Plastics generally possess sufficient durability, provided they offer sufficient surface … Strong and ductile; Poor conductors of heat and electricity; Easily moulded into different shape and size; Resist corrosion and are resistant to many chemicals. Every polymer has very distinct characteristics but most share a few similar characteristics. Gehr Plastics produces some of the finest plastic semi-finished shapes in the industry, and also some of the largest. document.write('') { document.write(' ') 1. They have been established to simplify standardization in the specification of plastic pipe on an international basis. Therefore, it is important to note that different types of plastics are known to possess different physical and chemical properties. The most commonly specified mechanical properties of polymers include stiffness and breaking stress, quantified in the table of properties and applications as flexural modulus and tensile strength. suitable pigments are added in the process of manufacturing of plastic material to get these different properties. 2021 Osborne Industries INC. ALL Rights Reserved, Combination of Composite Materials in Design, Video: Amazing Impact Resistance of pDCPD Plastic, Video: Physical Properties of RIM Thermosetting Plastics, Lightweight with a high strength-to-weight ratio, Can be manufactured inexpensively and mass produced. Degree to which a plastic changes size due temperature change. Unit 12 Lesson 9 Properties of Plastics (Total Points = 27) LiveLesson Recording: Recording goes through 8 different plastic samples so students can collect data and complete the questions for portfolio. The properties of plastic are numerous. For the most part, they are: Compared to metal, plastic has a low melting point, is highly malleable, and can be molded easily into basic or complex forms. Engineering Calculators Plastics vary as much as the many applications for it. They are made up of carbon, hydrogen and sometimes oxygen, chlorine, nitrogen, fluorine, sulfur, phosphorus or silicon. 3. Training Online Engineering Main Characteristics and Properties of Polycarbonate PC is an ideal material well known and widely used in the industry for its versatile characteristics, eco-friendly processing and recyclability. Plastic is a synthetic material created from a broad range of organic polymers that have become an indispensable part of our everyday world. There are two primary forms of plastic: thermoplastic and thermoset plastics, the use of which is dependent on the application. Typical reactions for chain assembling are polyaddition (continuous or step wise) and condensation polymer-ization (polycondensation) [1] (Figure 1.1).. Properties of Plastic Plastics are generally low cost, easy to manufacture, durable, strong for their weight, electrically and thermally insulative, and resistant to shock, corrosion, chemicals, and water. Coefficient of Friction. © Copyright 2000 - 2021, by Engineers Edge, LLC www.engineersedge.com All rights reserved The size and structure of the polymers that compose different plastics contribute to the plastics’ properties. document.write(''); Plastic, polymeric material that has the capability of being molded or shaped, usually by the application of heat and pressure. if (document.getElementById("tester") != undefined) We wear plastic in our clothes—polyester (PES) and polyamides (PA) (nylons). Properties of Plastics The term ‘Plastic’ is used to refer to a wide range of semi-synthetic or synthetic organic polymers that are known to be malleable and, therefore, mouldable into differently shaped solids. 5. Chemical Resistance of Plastics There are currently no comments available. 2.Good impact resistance. Contact us today to get started! DFM DFA Training Engineering Videos | Contact. High extrusion speed on standard lines 7. Material Properties of Plastics 1.1 Formation and Structure The basic structure of plastics (or polymers) is given by macromolecule chains, formulated from monomer units by chemical reactions. With its properties, acetal plastics are present in various industrial applications, and it comes in different colors and grades. And because of the lower viscosity liquid polymers used in molding thermosets than those in molten thermoplastic polymers, RIM molding techniques can produce high impact, heat resistant, light-weight, larger, stronger, and rust and corrosion proof products like automotive bumpers and fenders, large truck and bus body parts, air spoilers, agricultural equipment, septic tanks, chlorine generation components, and much more. , GD&T Training Geometric Dimensioning Tolerancing. Once formed and solidified, i.e., a process known as curing, the plastic becomes “set.” The transformation process from a liquid state to a solid state is irreversible and provides an ultra-strong end product. The result is heat, corrosion, abrasion, and impact resistant material parts, which is utilized in the agricultural, aerospace, and transportation sectors, among others. A resin is mixed with a catalyst which acts as a hardener, and injected into a mold that contains dry fibers, such as fiberglass. To follow more about plastics, download BYJU’S – the learning app. When thermoplastics are heated, there is no chemical bonding and the material’s physical properties remain unaffected. A lower number indicates more slippery. Home font-size: 12px; Engineering Forum // --> Potable water approved 6. document.write(''); 4. 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. Unlike metals, finishes and colors can be added before fabrication and the need for certain post-treatment processes, such as painting. The uses of polypropylene (PP) are seemingly endless. Poly We offer LDPE products in 1-10 MIL thickness and in an extensive range of colors. 3.Good transparency and wear resistance Engineering plastics are a group of plastic materials that have better mechanical and/or thermal properties than the more widely used commodity plastics (such as polystyrene, PVC, polypropylene and polyethylene).. 2. The possible results and typical values observed during such test, depending on material behavior, are summarized in the following graph: The molecules can be fashioned with various properties depending on what we need: sticky or slippery or lightweight or soft or hard or foamy or stretchy or … well, you get the point. ; High number indicates more growth when heated. There are some properties of plastic as follows: 1. Another important property is toughness, which is the energy absorbed by a polymer before failure—often as the result of a sudden impact. If you have a need for a quality plastic sheet or rod, in a large or unusual size, give us a try. Synthetic polymers, which includes the large group known as plastics, came into prominence in the early twentieth century. Introduction: Plastics come in all shapes and sizes. else Finally, plastic does not rust. Plastic is a synthetic material created from a broad range of organic polymers that have become an indispensable part of our everyday world. .style2 {font-size: 12px} This allows for many more intricate designs than ordinary injection molding. Disclaimer Professional Plastics, Inc. 8322 Clairemont Mesa Blvd. Whatever the manufacturing needs of your company or industry, Osborne Industries will meet the most complex plastics challenges. Introduction to Plastics PROPERTIES OF PLASTICS 19. The main physical difference between the two is that one can be reused time and again, and the other cannot. Lower cost 8. Engineering Toolbox They are poor conductors of heat and electricity. Coefficient of Linear Thermal Expansion. }, , Plastics Engineering and Design Chemists' ability to engineer them to yield a desired set of properties (strength, stiffness, density, heat resistance, electrical conductivity) has greatly expanded the many roles they play in the modern industrial economy. Acrylic plastic is a polymer material that contains acrylic acid. It tears with no visible elongation or nearly 0 per- The list of polymers goes and on and on, e.g., polystyrene (PS), high impact polystyrene (HIPS), polyethylene terephthalate (PET), polyurethane (PU), polycarbonate (PC) and polyethylene (PE). Engineering Materials and Design, Typical Engineering Properties of Plastics Materials. Comparing the Physical Properties of Plastic No matter how much experience you have working with plastics, sometimes a direct comparison of physical properties is the best way to determine which material is best for your application/project. 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