EPS has a reduced thermal conductivity, with a density of about 28-45kg/m3. An important property of extruded polystyrene is its buoyancy or ability to float in water. Styropor Expanded Polystyrene Technical Bulletin S-7, “Protective Packaging” Properties and Design Fundamentals”, BASF Corporation, Mt Olive, New Jersey. The thermal insulation capacity of a material is defined by its coefficient of thermal conductivity than in the case of the products of EPS varies, as the mechanical properties, with the apparent density. Styrenic Copolymersand their blends are considered engineering thermoplastics because their properties can be tailored over a wide Polystyrene is also copolymerized, or TextosCientificos.com, Your email address will not be published. It is a closed cell, rigid foam material produced from: No Account yet? Polystyrene is commonly injection molded, vacuum formed, or extruded, while expanded polystyrene is either extruded or molded in a special process. These effects can be avoided by simple measures in construction applications with paints, coatings and coatings. Expanded polystyrene is not hygroscopic, unlike other materials in the insulation and packaging sector. Building and construction applications account for around two-thirds of demand for expanded polystyrene. Even by completely immersing the material in water, absorption levels are minimal with values ranging from 1% to 3% by volume (immersion test after 28 days). With respect to the upper end the use temperature limit is around 100 ° C for short-lived actions, and about 80 ° C for continuous actions and with the material subject to a load of 20 kPa. Polystyrene, a hard, stiff, brilliantly transparent synthetic resin produced by the polymerization of styrene. Expanded Polystyrene’s (EPS) natural make up of approximately 98% air, makes this material highly buoyant and ideal for the construction of floating mooring and docks. For several years, expanded polystyrene (EPS) has been utilized as a material of choice in several food packaging applications, cost-effective and energy-efficient insulation in construction applications as well as cushion transport packaging material for shock sensitive goods and many more. Expanded Polystyrene (EPS) is technically defined as: “Cellular and rigid plastic Material made from the moulding of expandable polystyrene preexpandid pearls or one of their copolymers, which has a closed, air-filled cell structure”. Comprised of about 98 percent air, expanded polystyrene is extremely lightweight, making it ideal for transport and installation. Load-bearing structurally insulated Panels etc. Your email address will not be published. Physical-Chemical Properties | 0 comments. This characteristic makes it ideal for use in packaging as it does not significantly add to the weight of the total product thereby reducing transportation costs. Required fields are marked *. Polystyrene has a number of properties: it has a low melting point, it is translucent before tint is added, and it is hard and brittle. Approximately 98% of the material volume is air and only 2% is solid matter (polystyrene), the air at rest being an excellent thermal insulator. Expanded Polystyrene has been the proven answer to common packaging, insulative, and construction material solution for decades. Energy consumption for transport fuel is also reduced and vehicle emissions minimised – all contributing to lower global warming. If you are thinking of making use of it, please quote the source and link to the original note from where you have taken this content. Polystyrene was first synthesized at an industrial level in 1930. So here shared some information about these properties Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The natural color of expanded polystyrene is white, this is due to light refraction. Duncan-Chang parameters of EPS are studied in the test. The material has been modified by the addition of flame retardant additives. The product’s homogenous, closed-cell cross section, with a lack of voids and each cell fully enclosed by polystyrene walls, contributes to its impressive strength. The material can also be put into a foamed state. Introduction Expanded Polystyrene, or EPS, […] Extrusion – the material is fed into the extruder, where it is melted. Share. However its major application is as a protective packaging for consumer electronic products and white goods. VIDEOTUTORIALS – The use of expanded polystyrene (EPS) in Civil Engineering works, VIDEOTUTORIALS – Use of Expanded Polystyrene (EPS) in Interior and Exterior Decoration, walls, molds, borders, cornices and more, Expanded polystyrene (EPS) packaging, uses of Expanded Polystyrene in the packaging of various industries, VIDEOTUTORIALS – Manualities with expanded polystyrene (EPS), Uses and Applications of Expanded Polystyrene (EPS) in Packing and Packaging, The use of expanded polystyrene (EPS) in Systems of Drainage of Water of a Land, The use of expanded polystyrene (EPS) in Hydraulic Projects, Properties and Characteristics of Expanded Polystyrene (EPS). But, what is EPS? Expand Polystyrene is simply written as EPS, and it is newly used as a kind of embankment filler. in detail. These properties, in combination with satisfactory engineering considerations provide the design flexibility required to create truly cost-effective protective packaging.With the average package handled by up to nine different people and with more than 445,000 packages a day per distribution facility, the risks of the distribution environment can be great. Granulation – EPS is added into a granulator that chops the material into smaller pieces. EPS is sup-plied to molders in the form of a polystyrene bead; EPS beads are loaded with a blowing The products and materials of expanded polystyrene have an excellent thermal insulation capacity. EPS is commonly preferred thermoplastic material for over half a century due to its performance, technical versatility, and cost-effectiveness. TDS Expanded Polystyrene.doc Page 2 of 4 What is Expanded Polystyrene (EPS) EPS is a closed cell lightweight cellular plastics material produced from polystyrene. Color can be added, and the extruded material is then molded into a new value added product. Tomasz Rydzkowski, Kazimierz Reszka, Mieczysław Szczypiński, Michał Marek Szczypiński, Elżbieta Kopczyńska, Vijay Kumar Thakur, Manufacturing and Evaluation of Mechanical, Morphological, and Thermal Properties of Reduced Graphene Oxide-Reinforced Expanded Polystyrene (EPS) Nanocomposites, Advances in Polymer Technology, 10.1155/2020/3053471, 2020, (1-9), (2020). 1See ASTM C578 Standard for test methods and complete information. These variations are evaluated through the coefficient of thermal expansion that, for the products of EPS, is independent of the density and is placed in the values oscillate in the range 5-7 x 10 -5 K -1 , that is to say between 0.05 and 0.07 mm . As an example, an expanded polystyrene thermal insulation plate of 2 meters long and subjected to a thermal jump of 20 ° C will experience a variation in its length from 2 to 2.8 mm . Its excellent thermal insulation and mechanical protection properties make it ideal to package fish and other foodstuffs. Polystyrene is naturally transparent, but can be coloured with colorants. In recent years the expanded polystyrene composites with cellulose and starch have also been produced. 24. Expanded polystyrene (EPS) is a rigid and tough, closed-cell foam. The graphs below show the values achieved on these properties depending on the apparent density of expanded polystyrene materials. The products and articles finished in expanded polystyrene are characterized by being extraordinarily light but resistant. Expanded Polystyrene Physical Properties Expanded polystyrene has a flame spread index of 20 and a smoke developed index of 150-300 when tested in accordance with ASTM E84/UL 723 for densities from 0.7 - 2.0 lb/ft3. This is often used blended with General Purpose polystyrene or on its own in a wide range of household applications and in food packaging. Expanded Polystyrene is manufactured in a low, medium, high and extra high densities. Xytron™ (PPS)’s Withstand Durability Challenges & Extend Service Life, Expanded Polystyrene (EPS): Ultimate Guide on Foam Insulation Material. Register for freeForgot Password ? For several years, expanded polystyrene (EPS) has been utilized as a material of choice in several food packaging applications, cost-effective and energy-efficient insulation in construction applications as well as cushion transport packaging material for shock sensitive goods and many more. Polystyrene is used in some polymer-bonded explosives (PBX). Hence, it finds use in a wide variety of applications such as food containers, packaging material, building insulation, and more. This makes it the perfect choice for making floating boards. The outstanding shock absorbency of expanded polystyrene packaging guarantees the protection of products. It is rigid, but when heated to 100 Celsius, it becomes a flowing liquid. Polystyrene is mixed with additives and a blowing agent – which is then melted together through a dye, XPS’s blowing agent stays embedded in the material for years, XPS is often selected over EPS for wetter environments that require a higher water vapour diffusion resistance value, The compressive strength of XPS is greater than that of EPS. Based on abroad studies to EPS mechanical properties, a further research on EPS has been done in this paper. The natural color of expanded polystyrene is white, this is due to light refraction. Polystyrene literally translated is “polymerised styrene”. Expanded polystyrene, or EPS geofoam, is a cost-efficient insulation material used in the construction industry. Explore more about this polymer and find out its benefits, properties, recyclability etc. In addition to the phenomena of dimensional changes due to the effect of temperature variation described above, expanded polystyrene may suffer variations or alterations due to the effect of thermal action. Depending on the application it is used for, Polystyrene's properties will change. It is unique in that it is a closed cell, rigid, polymeric material that is about 95% air. It can be used as a building material or a design element, and can be molded into many shapes for a number of household uses as well. Depending on the application, densities range from 10kg/m3 to 35kg/m3. In fact, many of its applications are directly related with this property: for example, when it is used as an insulating material of the various enclosures of the buildings or in the field of packaging and packaging of fresh foods and perishables such as for example the boxes of fish. EPS: Expandable polystyrene The expanded or foamed polystyrene is thermally insulating, has high impact resistance and good processability. ASTM 578-95 “Physical property requirements of polystyrene foam thermal insulation”, American Society for Testing and Materials. It is extremely lightweight, but strong and durable. The temperature range in which this material can be used safely without its properties being affected has no limitation at the lower end (except dimensional variations by contraction). The triaxial test is used for the study. per metre long and Kelvin grade. That same year it was used as an insulator in a construction inside the same BASF plant where the discovery was made. It does not leach any substances into the ground water. Since density affects the physical properties of the polystyrene and cost it is important to understand what densities are most suitable for which construction applications. Expanded polystyrene properties and characteristics Density. This good thermal insulation capacity is due to the very structure of the material that essentially consists of occluded air within a cell structure made up of polystyrene. The polystyrene beads can easily be incorporated in mortar or concrete to produce lightweight concrete, with a wide range of densities. It is used for the insulation of (cavity) walls, roofs and concrete floors. EPS products, like all materials, are subject to dimensional variations due to thermal influence. Read more. Expanded polystyrene is a plastic foam material that has certain desirable properties because of its structure. How is it manufactured? It is widely employed in the food-service industry as rigid trays and containers, disposable eating utensils, and foamed cups, plates, and bowls. Properties, Performance and Design Fundamentals of Expanded Polystyrene Packaging Expanded Polystyrene Expanded polystyrene (EPS) is a generic term for polystyrene and styrene copolymers that are expanded into a variety of useful products. Its lightweight, strength, thermal insulation, durability and other properties make it suitable for a number of applications. High Impact Polystyrene: Polystyrene containing a polybutadiene rubber impact modifier is opaque or translucent rather than transparent. Hatton, Kayo: Jorge Marcondes, Lucy McProud, Blending – the material is passed into a blender for thorough mixing with similar granules. Mechanical properties of expanded polystyrene lightweight aggregate concrete and brick. Expanded Polystyrene – Expanded Polystyrene or EPS has great properties such as low weight, high rigidity, and formability. Today it is mostly obtained from oil. Extruded Polystyrene is manufacture in one density. Expanded PolyStyrene (EPS) is a white foam plastic material produced from solid beads of polystyrene. Towards the end of the 1950s, the firm BASF (Germany), at the initiative of Dr. F. Stastny, developed and started the production of a new product: expandable polystyrene, under the Styropor brand. This material is also known as Telgopor or White Cork. Other Properties. Expanded polystyrene (EPS) is used for the production of a number of applications. It is extraordinarily light and buoyant, and a good insulator against heat and sound. To the contrary of what happens with the water in the liquid state, the water vapor can diffuse into the interior of the cellular structure of the EPS when between both sides of the material is set to a gradient of pressures and temperatures. According to Expanded Polystyrene Australia, the lightweight nature of expanded polystyrene means energy consumption for transport fuel is also reduced and vehicle emissions minimised – all contributing to minimising global warming. The products and articles finished in expanded polystyrene are characterized by being extraordinarily light but resistant. Ultraviolet radiation is practically the only factor of importance. Compressive Strength. This content was originally published by Textos Científicos at the following address: https://www.textoscientificos.com/polimeros/poliestireno-expandido. Insulating: The thermal insulating properties of EPS help keep food fresh and prevent condensation throughout the distribution chain. Author links open overlay panel Yi Xu Linhua Jiang Jinxia Xu Yang Li. Expanded Polystyrene (EPS) offers the perfect combination of mechanical and physical properties which makes it ideally suited for use within the construction industry. And, what are its key characteristics making it suitable in these applications? Applications of Polystyrene Alternative Building Material (expanded Polystyrene) - Properties (4) - Nairaland. Expanded polystyrene (EPS) is a kind of stable foam with low density, consisting of discrete air voids in a polymer matrix. The density of the material is closely related to the mechanical resistance properties. EPS protective packaging offers a broad range of physical properties to the designer and user. Construction - Plates and Blocks of Plumaphon, Interior and Exterior Decoration - Plates and Blocks of Plumaphon, Coolers - Refrigerating or Thermal Boxes - Cool Chambers, Construction – Plates and Blocks of Plumaphon, Coolers – Refrigerating or Thermal Boxes – Cool Chambers, Interior and Exterior Decoration – Plates and Blocks of Plumaphon, REDESISFORM - Redes y Sistemas Informáticos. The abbreviation for EPS is derived del ingles Expanded PolyStyrene. It is primarily used for packaging, insulation etc. The distinctive white pre-expanded beads are very recognizable, and display the resin identification code number. Color. In this study, mix proportion parameters of expanded polystyrene (EPS) lightweight aggregate concrete are analyzed by using Taguchi’s approach. XPS foam board is a rigid material with a very high compressive strength. EPS also has applications in horticulture as seed trays. Depending on the application, densities range from 10kg/m3 to 35kg/m3. If you are thinking of making use of it, please quote the source and link to the original note from where you have taken this content. Polystyrene uses mostly everywhere widely because it has many properties. EPS manufacturing does not involve the use of ozone-layer-depleting CFCs and HCFCs, No residual solid waste is generated during its manufacturing, It aids energy savings as it is an effecting thermal insulation material which helps reduced CO, EPS is inert and non-toxic. The conclusion was that the material after 45 years of Use kept each and every one of its properties intact. In 1831 a colourless liquid, styrene, was first isolated from a tree bark. Polystyrene copolymers are also produced; these contain one or more other monomers in addition to styrene. https://www.textoscientificos.com/polimeros/poliestireno-expandido. Expanded Polystyrene Properties and Key Benefits EPS is a lightweight material with good insulation characteristics offering benefits such as: Thermal Properties (insulation) - EPS has very low thermal conductivity due to its closed cell structure consisting of 98% air. EPSis an extremely lightweight material which is not surprising considering it is comprised of ~98% air. Show more. EPS provides developers and architects with excellent thermal performance and compressive strength whilst also offering longevity and sustainable green credentials. Styrene – which forms the cellular structure, Pentane – which is used as a blowing agent, » View all EPS commercial grades and suppliers in Omnexus Plastics Database, XPS (Extruded) vs EPS (Expanded): Main Differences, Manufacturing Of Expanded Polystyrene Sheets/Molds, thermal conductivity of expanded polystyrene foam, Typical Properties of EPS Molding Packaging (70°F Test Temperature), Also read: Extrusion of Plastic Foams - Fundamentals & Introduction, » Find Suitable EPS Grade for Building & Construction Applications, » Select the Right Grade for Packaging Applications, Manufacturing Long-lasting & Efficient Fuel Cells, Be the first to comment on "Expanded Polystyrene (EPS): Ultimate Guide on Foam Insulation Material", Your email address and name will not be published, submitting a comment or rating implies your acceptance to, EPS is manufactured by expanding spherical beads in a mold, using heat and pressure to fuse the beads together. 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