Manufacturing properties of engineering materials lecture. Students will also be introduced to fracture mechanics of plastics. The term property is a qualitative or quantitative measure of response of materials to externally imposed conditions like forces and temperature. Engineering thermoplastics definition engineering plastics defined as materials which can be used stru cturally, typically replacing metals, wood, glass, or ceramics. Items such as disposable coffee cups, plastic food boxes, plastic cutlery and packing foam are made from ps.
Pom with its broad type diversity is an engineering plastic. Different types of plastics and their classification the society of the plastics industry spi established a classification system in 1988 to allow consumers and recyclers to identify different types of plastic. Trantina, design with plastics, materials selection and design, volume 20, asm handbook, asm international, 1997, pages 639 to 647 the key to any successful part development is the proper choice of material, process. Engineering plastics are mainly used for applications where a good ratio between costs and properties are needed at moderate temperatures. Properties and uses of plastics as a construction material.
Units of strain are inin for us customary and mm for s. The physical properties can also be further grouped into categories. Can maint ain mechanical and dimensional stability above 100 oc and below 0oc. Properties of engineering materials linkedin slideshare. Each one of our plastic materials has listed on its own product page an engineering plastic properties guide for reference. Code 7 is used to designate miscellaneous types of. Our machinable plastic types are frequently used to produce industrial plastics for applications in the automotive, manufacturing, engineering, electronic, food and transport industries. Materials science of polymers for engineers hanser publications.
Plastics for technical applications our industrial division offers a large selection of thermoplastics and composites for technical applications. Students will learn the unique properties of the various commercial thermosetting and thermoplastic resins. Engineering properties of polyethylene introduction a fundamental understanding of material characteristics is an inherent part of the design process for any piping system. Thermal properties heat disortion temperature method a heat disortion. The properties of engineering materials can be classified into the following main groups. A number of pdf files with the ultrasonic and acoustic properties of solids, liquids, gases, plastics, rubbers, longitudinal piezoelectric and shear piezoelectric. Pdf the properties of plastics are discussed and summarized, sometimes in comparison with metals and other materials. Sort, compare, and find the plastic material suited for your application. Chapter 3 material properties 45 an additional objective of this chapter is the presentation of values for the major properties that are used for material classification and piping design, and a brief description of the methods based on which these properties are determined. Material selection procedure for design of plastic products will also be presented. When you want to apply any type of load on a particular member, you need to know its material properties, density, etc. For chemically resistant plastic, view our chemical resistance of plastics chart. Plastics engineering not only combines the concepts of form, fit, and function, which involves design principles, but also encompasses the knowledge of various scientific and engineering fields that requires a good understanding of materials, their properties, processing methods, design principles, functional requirements, and the application. There are a variety of plastics available in market.
Chapter 3 material properties plastics pipe institute. Itis composedofrelativelylowmolecularmass materialbeforehardeningwhichishardened. Polyethylene pe is a thermoplastic polymer produced by the polymerization of ethylene. Hence it is imperative to select correct material suitable to application. Properties of plastics or polymers play a vital role in the field of mechanical engineering. As we shall see, these unassuming additives are a vital addition to the arsenal of the plastics formulator. Plastic materials consist of long chain molecules polymers. We stock a large range of high performance plastics, engineering plastics, standard commodity type plastics and industrial composites. It is also well to note that some plastics with unusual toughness and abrasion resistance, such as. Easy descriptions of typical, physical, thermal, optical, electrical properties. However, avoid any unsafe condition where the plastics part could come out of the clamping tools. Characteristics, applications and properties of polymers. Thermoplastic consumption is roughly 80% or more of the total plastic consumption. The field of mechanical engineering has traditionally been focused on steel and metal alloys in order to achieve higher mechanical strength and.
From bottle filling plants to bridge building, underground mining to outer space. Kim 18 polyethylene ethylene is produced by cracking higher hydrocarbons of natural gas or petroleum ldpe commercialized in 1939 density of 0. Engineering plastics our comprehensive selection of premium engineering plastics and industrial composites are widely utilised across new zealand industry. Composite coatings based on linear and branched block copolymers for hydroxyapatite deposition in simulated bodyfluid. Elastic deformation e is youngs modulusor modulus of elasticity, has the same units as. Plastics technology handbook plastics properties and testing. If you have a phenolic resin or thermoset molding material project, chances are, the plenco team can make it work. Plenco plastics engineering company thermoset plastic. Fillers are an extremely diverse group of materials. Typical reactions for chain assembling are polyaddition continuous or step wise and condensation polymerization polycondensation 1 figure 1.
Use our interactive properties table below to explore by property group, sort, or compare two or more plastic materials. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Although the information and statements herein are believed to be accurate, no guarantee of their accuracy is made. Polymers can be separated into plastics and rubbers as engineering materials, it is appropriate to divide them into the following three categories.
Engineering plastics are a group of plastic materials that have better mechanical andor thermal properties than the more widely used commodity plastics such as polystyrene, pvc, polypropylene and polyethylene being more expensive, engineering plastics are produced in lower quantities and tend to be used for smaller objects or lowvolume applications such as mechanical parts, rather than. Plastic solutions for mechanical engineering ensinger. An introduction to viscoelastic theory and its relationship to measurable properties of plastics. Polystyrene is commonly recycled, but is difficult to do. Plastic solutions for mechanical engineering ensinger produces a wide range of engineering plastics which are predominantly used for mechanical applications and components of industrial machinery.
Each type of filler lends a unique property set to the host polymer. Plastic material properties table mechanical, physical, thermal. Synthesis of a dripping agent based on lauric acid diethanolamide and delaying its migration in lldpe films. For that, in this article, i am exploring the necessary properties of polymers in a detailed manner. A guide to chemical resistance of engineering plastics. Daarnaast leveren wij ook engineering plastics op maat. View plastic materials found under a specific property group.
In terms of the production quantity produced, polyethylene is among the largest group of plastics, the polyolefins. The material properties varies very vastly from each other. Chapter 6 mechanical properties university of tennessee. Plastics engineering company is a leading north american manufacturer of phenolic resins and thermoset molding materials, selling products under its trademark plenco. For pure inorganic aqueous solutions as well as for mixtures, the phvalue of the solution often proves to be a reliable tool when assessing the chemical resistance of. Pdf applied plastics engineering handbook researchgate. Each plastic material has its own peculiar properties to suit its particular uses. Plastic shapes include sheet, rod, hex, pipe, cubes, balls, and tubes. 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. Some of the useful properties of various engineering polymers are high strength or modulus to weight ratios light weight but comparatively stiff and strong, toughness, resilience, resistance to corrosion, lack of conductivity heat and electrical, color, transparency, processing, and low cost. Elastomers where 1 and 2 are plastics and 3 are rubbers. Engineering plastic an overview sciencedirect topics. Unesco eolss sample chapters materials science and engineering vol. The name plastic is derived from the greek word plastikos, which means able to be shaped.
Finishing and machining plastics 659 clogging is not encountered with the harder thermoplastics, and fine files may be used al though the sheartype, coarser files still are generally recommended. About 7% of all plastics production, but nearly 10% of plastics sales dollars. They can be minerals, metals, ceramics, biobased e. Available in many colors and in transparent form, plastics can be rubbery or rigid.
The simplest definition of a polymer is a useful chemical made of many repeating units. The success of plastic as an engineering material will depends up on the selection of variety of plastic. Pdf properties of plastics in structural components researchgate. High performance multipurpose engineering plastics ntn bearee 1 tg tm temperature mechanical strength fig. This document pdf may be used for research, teaching and private study. With such an understanding, the piping designer can use the properties of.
Bhowmick encyclopedia of life support systems eolss 9 k g e 3k g. Engineering plastics properties chart supply services. Codes for plastics 1 pet 2 hdpe 3vinylpvc 4ldpe 5pp 6ps 7other 1 2. A polymer can be a three dimensional network think of the repeating units linked together left and right, front and back, up and down or twodimensional network think of the repeating units linked together left, right, up, and down in a sheet or a one. Material selection a design guide lanxess energizing chemistry. Engineering materials and their properties in this chapter materials are classified and the most important properties of the engineering materials are listed with short explanations. Click the down or up arrows triangles or column headings to sort plastic materials or material properties.
Other engineering properties such as fatigue resistance, flammability, chemical resistance, and electrical properties will be presented. Machining forces being lower for engineering plastics than for metals and the former deforming more easily if clamped too tightly, clamping pressures should be reduced. Wij leveren engineering plastics in diverse materialen, vormen en maten. The properties covered here are especially those properties, which are important in manufacturing processes. Other materials exhibit stressstrain curves considerably different from carbonsteel although still highly nonlinear.
Because of its degree of crystal linity, pe belongs to the group of partially crystalline ther moplastics. Typical reactions for chain assembling are polyaddition continuous or step wise and condensation polymer ization polycondensation 1 figure 1. All statements, technical information, and recommendations contained in this publication are. Manufacturers place an spi code, or number, on each plastic product, usually moulded into the bottom.
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