Static and dynamic mechanical properties of expanded polystyrene. Mechanical properties of solid polymers have been discussed in terms of two approaches. Mechanical properties of expanded polystyrene lightweight. Determination of longterm mechanical properties for thermal. Mechanical properties of oriented polystyrene film. Split hopkinson pressure bar shpb has been used to investigate the ratedependent properties of foams with strain rates up to 3000 1s. Improvement of mechanical properties of anisotropic glassy. Eps beads are loaded with a blowing agent, usually pentane, and other chemical agents and additives that give the beads expansion vibrancy and allow them to be processed and molded into lowdensity foam articles. Mechanical properties of sandwich panels constructed from.
Eps block bearing test is studied by means of finite element method, and the. Pdf comparing effect of adding ldpe, pp, pmma on the. Pdf this work aims to study the effect of the incorporation of natural fibers on the mechanical properties of materials plastics composite. Mechanical properties of polystyrene olive stone flour composites article pdf available in research journal of pharmaceutical, biological and chemical sciences 63. Perhapsthemostnatural test of amaterials mechanical properties is the tensiontest,in which astriporcylinderofthematerial,havinglengthlandcrosssectionalareaa,isanchoredatone end and subjected to an axial load p a load acting along the specimens long axis at the other. Generalpurpose polystyrene gpps highimpact polystyrene hips. Plastic material properties table mechanical, physical. A list of material properties for bulk general purpose polystyrene and pmma from the.
Polystyreneabs and high impact polystyrene abs biqiong chen department of mechanical and manufacturing engineering, trinity college dublin, college green, dublin 2, ireland. Expanded polystyrene eps and the environmentpage 4 applications and properties of eps the range of applications for expanded polystyrene is very wide. A systematic investigation was performed based on a statistical. Mechanical properties of polystyrene and polypropylene based. Low density polyethylene ldpewhile the second group.
Mechanical properties of sandwich panels constructed from polystyrenecement mixed cores and thin cement sheet facings hamid reza 2tabatabaiefar 1, bita mansoury 2, mohammad javad khadivi zand and daniel potter 1 1 faculty of science and technology, federation university australia, australia. Polystyrene is a fragile transparent material which is commonly called crystal ps to improve its mechanical properties, we resort to the generation of residual stresses rss by a. Mechanical properties of polystyrenepolypropylene reinforced. We are going to focus on these applications by putting them into three main categories and underline the properties that make eps ideal for each one. The 51 syntactic foam material shows superior mechanical properties in lieu of the composite action 52 by filler and matrix. The aging time effects of the preexpanded polystyrene on. The compressive stress of homogenous eps expanded polystyrene 53 only foams with density of. Properties, performance and design fundamentals of expanded. Polystyrene and its characteristic properties mechanical properties thermal properties rheological properties electrical properties optical properties permeability to gas and water vapor water absorption. Effects of natural fillers on some properties of polystyrene ofora, pauline u, eboatu. Polystyrene polymers get degraded on exposure to sunlight, due to photo oxidation, which affects its mechanical properties.
In this study, processingstructuremechanical properties relationships in expanded wood fiber polystyrene composites epsc made with a physical blowing agent were investigated. Polymers free fulltext extruded polystyrene foams with. Polystyrene and its characteristic properties mechanical properties thermal properties rheological properties electrical properties optical properties permeability to gas and water vapor water absorption resistance to chemicals environmental stress cracking behavior aging behavior resistance to highenergy radiation resistance to microorganisms. Mechanical properties of styrofoammodified asphalt binders. A full bar means this is the highest value in the relevant set. Polystyrene also is made into a foam material, called expanded polystyrene eps or extruded polystyrene xps, which is valued for its insulating and cushioning properties. One of the most important styrene copolymers is poly styrenecoacrylonitrile psan. The influence of the content of esters on the glass transition temperature, dynamic mechanical properties, flexural properties, hard ness and. Generalpurpose polystyrene gpps highimpact polystyrene. Expanded polystyrene is widely used in building and construction as its inherent strength, durability, and thermal insulation properties make it an ideal choice for energy efficient buildings. Paper open access mechanical properties study of high impact. The thermomechanical properties of recycled polystyrene. Mechanical properties of polystyrenelow density polyethylene.
Material properties of polystyrene and polymethyl methacrylate. Polystyrene, a hard, stiff, brilliantly transparent synthetic resin produced by the polymerization of styrene. All you wanted to know about the amazing properties of. In this research three groups of polymer blends have been prepared first group included polystyrene ps. Morphology and mechanical properties of polyamide 6.
Duncanchang parameters of eps are studied in the test. In this research, styrofoam in its waste form was first collected, disintegrated, washed and then dried prior to mixing it with asphalt. In this study, we improved the thermal insulation behavior and mechanical properties of extruded polystyrene foams through morphology control with the foam nucleating agent 1,3,5benzenetrisamide. Role of bulky pendant groups in affecting glass transition temperature. Here we shall learn about the physical, mechanical, optical, thermal, electrical, and chemical properties of polystyrene. Ultimate guide on foam insulation material for several years, expanded polystyrene eps has been utilized as a material of choice in several food packaging applications, costeffective and energyefficient insulation in construction applications as well as cushion transport packaging material for shock sensitive goods and many more.
For such failure, the controlling material mechanical property is the elastic modulus. Xpsa members collectively manufacture more than 95% of all xps destined for use in the north american market. Effects of natural fillers on some properties of polystyrene. Expanded polystyrene eps is a generic term for polystyrene and styrene copolymers that are expanded. Selected engineering properties and applications of eps geofoam. Polystyrene is a fragile trans parent material which is commonly called crystal ps to improve its mechanical properties, we resort. Based on abroad studies to eps mechanical properties, a further research on eps has been done in this paper. Pdf the effect of free quenching on the mechanical, thermal, and thermophysical properties of polystyrene has been investigated. Eps is supplied to molders in the form of a polystyrene bead. Comparing effects of two triblock copolymers on morphology, thermal, mechanical and rheological properties of polystyrene low density polyethylene blends mahya afzali. Ep were derived from stressstrain and impact measurements.
Yielding or excessive plastic deformation failure of polymers in certain applications to carry design loads or occasional accidental overloads may be due to excessive plastic deformation resulting from the inadequate strength properties of the polymer. Torres, john, mechanical properties of polystyrene and polypropylene based materials after exposure to hydrogen peroxide 1999. The copolymer poly styrenecomethyl methacrylate psmma has higher clarity and improved chemical and uv stability. Abstract the thermal and mechanical properties of polystyrene ps modi. An overview of the mechanical properties of foams and periodic lattice materials norman a. Pdf thermophysical and mechanical properties of polystyrene. We do not empirically evaluate physical properties of our polymer beads, but we anticipate that many of the values associated with these properties are similar to those values reported in the scientific literature for the bulk polymers.
Thermal and mechanical properties of polystyrene modified. Eps block bearing test is studied by means of finite element method, and the duncanchang. Some mechanical properties of blends of polystyrene ps and ethylenepropylenerubber. This page shows summary ranges across both of them. Masaryka 5555, 760 01 zlin, czech republic 2 trevos a. Polystyrene is a fragile trans parent material which is commonly called crystal ps to improve its mechanical properties, we resort to the. A halffull bar means its 50% of the highest, and so on. Study on mechanical properties of expand polystyrene. 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. Polystyrene, polyethenylbenzene, lustrex, styron, vestyron, styrofoam. Selected engineering properties and applications of eps.
Split hopkinson pressure bar shpb has been used to investigate the ratedependent properties of foams with strain rates up to 3000 1s 11. The effect of free quenching on the mechanical, thermal, and thermophysical properties of polystyrene has been investigated. Mechanical properties of sugar palm fibre reinforced high. Here, few special investigations of the eps lightweight bricks made by eps lightweight aggregate concrete and the mechanical properties of eps brick masonry have been reported.
Mechanical properties of foam concrete international journal of earth sciences and engineering issn 09745904, vol. Polystyrene literally translated is polymerised styrene. Mechanical properties of polystyrene and polypropylene based materials. Static and dynamic mechanical properties of expanded. Properties, performance and design fundamentals of. Expanded polystyrene physical properties expanded polystyrene has a flame spread index of 20 and a smoke developed index of 150300 when tested in accordance with astm e84ul 723 for densities from 0. Thermophysical and mechanical properties of polystyrene. Foam polystyrene can be more than 95 percent air and is widely used to make home and appliance insulation, lightweight protective packaging. Polystyrene is a fragile transparent material which is commonly called crystal ps to improve its mechanical properties, we resort to the generation of residual stresses rss by a free quenching process. The rheological properties of the blends were studied with dsc and dynamic mechanical spectroscopy. Use our interactive properties table below to explore by property group, sort, or compare two or more plastic materials.
The extruded polystyrene foam association xpsa is a trade association representing manufacturers of extruded polystyrene foam xps insulation products and the industrys raw material suppliers. Mechanical properties of plastic materials material formula abrasive resistance astm d1044 mg cycles coefficient of friction compression set after 24 hr at 175c % compressive modulus gpa compressive strength mpa elongation at break % hardness rockwell izod impact strengt h j m1 poissons ratio tear strength n mm1 tensile modulus. Expand polystyrene is simply written as eps, and it is newly used as a kind of embankment filler. Expanded polystyrene eps concrete is a new lightweight building material that exhibits good mechanical properties and a priori mechanical features that are. Expanded polystyrene eps geofoam is a lightweight material that has been used in engineering applications since at least the 1950s. The values of many of the mechanical properties are more closely related to the birefringence than to the amount of hot stretching. It is widely employed in the foodservice industry as rigid trays and containers, disposable eating utensils, and foamed cups, plates, and bowls. Now that we have seen the structure of polystyrene, let us delve a little deeper into its properties. The relationships between the surface morphology of filler particles in polymer composites and their thermomechanical properties were investigated. The properties of ps include two common variations. Four polystyrenepolyurethane mechanical blends were prepared with 5, 10, 20, and 40% thermoplastic polyurethane, respectively.
An overview of the mechanical properties of foams and. The mechanical properties of a polymer include its strength, elongation, modulus, impact strength, and toughness. The graph bars on the material properties cards below compare gpps to. Perhapsthemostnatural test of amaterials mechanical properties is the tensiontest,in which astriporcylinderofthematerial,havinglengthlandcrosssectionalareaa,isanchoredatone end and subjected to an axial load p a load acting along the specimens long. The aging time effects of the preexpanded polystyrene on the patterns mechanical properties k. The density of polystyrene can vary from 10kgm 3 to 50kgm 3. Mixing percentages of styrofoam to asphalt sa were. Mechanical properties of injection molded pa6ps blend bars. Determination of longterm mechanical properties for.
Polystyrene is commonly injection molded, vacuum formed, or extruded, while expanded polystyrene is either extruded or molded in a special process. It has much improved chemical resistance, better heat stability, and improved mechanical properties. Tensile, flexural, and notched impact tests were used to evaluate the mechanical properties of pa6ps bars injectionmolded from pa6ps blend pellets, and the results are summarized in table 2. A 7080penetration grade asphalt binder was used and mixed with the processed waste styrofoam. The mechanical properties of short spfreinforced high impact polystyrene composites were studied and in composites there was a complex interplay of the properties of the constituent phases such as matrix, fibre and interfacial region between the fibre and matrix. It has good thermal insulation properties with stiffness and compression strength. Three different thermal treatments were investigated. Fracture cracks constitute regions of material discontinuity and frequently precipitate failure through fracture.
Pdf mechanical properties of polystyrene olive stone. In this work, the influence of three types of styrene maleic anhydride sma oligomers on the adhesion of polystyrene wood plastic composites wpc was investigated. General purpose polystyrene gpps gpps is a grade of ps. Their impact properties were compared with pure polystyrene and commerical types of impact polystyrene.
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. Mechanical properties of polystyrene and polypropylene. Dynamic mechanical properties of polystyrenepolyurethane. The brick is produced through extrusion molding technique which can avoid the segregation of eps beads. Pdf mechanical properties of polystyrene olive stone flour.
First, the facile preparation of welldefined copolymers of styrene s and 4vinylbenzoic acid a by reversible additionfragmentation chaintransfer. Heikens laboratory of polymer technology, eindhoven university of technology, po box 5, eindhoven, the netherlands received 11 march 1973. Some mechanical properties of blends of polystyrene ps and ethylene propylenerubber. Pdf static and dynamic mechanical properties of expanded. Low thermal conductivity and adequate mechanical strength are desired for extruded polystyrene foams when they are applied as insulation materials. Analysis of thermomechanical properties of selected class.
The tensile tests were carried out on both dry and wet samples, while the flexural and. Carboxylic acid groups were introduced into polystyrene, and the effect both on melt rheology and on mechanical properties of stretched and quenched anisotropic solids below the glasstransition temperature tg was investigated. A list of material properties for bulk general purpose polystyrene. All of our polystyrene and pmma polymethyl methacrylate microspheres are solid, nonporous polymer bead products. For more specific values, follow the links immediately below. Mechanical properties study of high impact polystyrene under impact and static tests l hylova1, a mizera1, m mizera1, r grund2 and m ovsik1 1 tomas bata university in zlin, nam. In this study, mesoporous or colloidal silica particles were incorporated into polystyrene matrices via melt blending or by styrene polymerization initiated from the particle surface. Mechanical properties of polystyrene low density polyethylene blends w. Even though the mechanical strength is not a critical issue for these samples, it is found to be sufficient, in addition good heat insulation and fire retardant. Crystal forms of the polymer polystyrene have low impact strength. Impact of nanoparticle surface modification on the. For chemically resistant plastic, view our chemical resistance of.
Generalpurpose polystyrene is clear, hard, and rather brittle. Fleck cambridge university engineering department, trumpington st. Shear modulus and mechanical damping of polystyrene as a function of. Garnweitner ab nanocomposites consisting of metal oxide nanoparticles in a polymeric matrix enable the improvement of. Mechanical properties of multilayers of carbon nanotube polystyrene nanocomposites a thesis submitted to the graduate faculty of the north dakota state university of agriculture and applied science by eid ali almutairi in partial fulfillment of the requirements for the degree of master of science major program. The material has been modified by the addition of flame retardant additives. The key phys ical phenomena, which determine the longterm mechanical behavior, are desc ribed as well as a mathematical model fo r prediction of longterm performance. A list of material properties for bulk general purpose polystyrene and pmma from the literature and other internet sources may be found below. It has good thermal insulation properties with stiffness and compression strength comparable to medium clay. The results of an extensive experimental investigation into the static and dynamic mechanical properties of eps foam were presented in a paper by wensu chen et al. Generally, the addition of 10wt% of fiber consisted of coconut and jute fiber has increased tensile properties of composites.997 311 889 670 839 1292 733 1054 1096 183 409 1105 323 1427 978 1200 786 1382 377 1325 1048 70 437 312 1114 1488 35 919 401 49 972 45 195 278 316 1249 1017 1368 282 1359 740 1250 1164 759 1234 1060 945 842