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. Pdf mechanical properties of polystyrene olive stone. 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. 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. This page shows summary ranges across both of them. Polystyrene polymers get degraded on exposure to sunlight, due to photo oxidation, which affects its mechanical properties.
Polystyrene and its characteristic properties mechanical properties thermal properties rheological properties electrical properties optical properties permeability to gas and water vapor water absorption. The values of many of the mechanical properties are more closely related to the birefringence than to the amount of hot stretching. Mechanical properties of polystyrene and polypropylene. 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. Role of bulky pendant groups in affecting glass transition temperature. Paper open access mechanical properties study of high impact. The tensile tests were carried out on both dry and wet samples, while the flexural and. An overview of the mechanical properties of foams and periodic lattice materials norman a. A list of material properties for bulk general purpose polystyrene and pmma from the literature and other internet sources may be found below. The graph bars on the material properties cards below compare gpps to. Thermophysical and mechanical properties of polystyrene. Eps block bearing test is studied by means of finite element method, and the duncanchang.
In this research, styrofoam in its waste form was first collected, disintegrated, washed and then dried prior to mixing it with asphalt. 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. Some mechanical properties of blends of polystyrene ps and ethylenepropylenerubber. 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. In this research three groups of polymer blends have been prepared first group included polystyrene ps. 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. Mechanical properties of polystyrene and polypropylene based. Expanded polystyrene eps geofoam is a lightweight material that has been used in engineering applications since at least the 1950s. Mechanical properties of injection molded pa6ps blend bars. Analysis of thermomechanical properties of selected class. The rheological properties of the blends were studied with dsc and dynamic mechanical spectroscopy. Torres, john, mechanical properties of polystyrene and polypropylene based materials after exposure to hydrogen peroxide 1999. It has good thermal insulation properties with stiffness and compression strength comparable to medium clay. 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.
Mechanical properties of foam concrete international journal of earth sciences and engineering issn 09745904, vol. Polystyrene is commonly injection molded, vacuum formed, or extruded, while expanded polystyrene is either extruded or molded in a special process. The copolymer poly styrenecomethyl methacrylate psmma has higher clarity and improved chemical and uv stability. Fleck cambridge university engineering department, trumpington st. Static and dynamic mechanical properties of expanded. Effects of natural fillers on some properties of polystyrene ofora, pauline u, eboatu. Mechanical properties of polystyrene olive stone flour composites article pdf available in research journal of pharmaceutical, biological and chemical sciences 63. Properties, performance and design fundamentals of. Impact of nanoparticle surface modification on the.
Polystyrene, a hard, stiff, brilliantly transparent synthetic resin produced by the polymerization of styrene. The effect of free quenching on the mechanical, thermal, and thermophysical properties of polystyrene has been investigated. First, the facile preparation of welldefined copolymers of styrene s and 4vinylbenzoic acid a by reversible additionfragmentation chaintransfer. Mechanical properties of expanded polystyrene lightweight. Morphology and mechanical properties of polyamide 6. Crystal forms of the polymer polystyrene have low impact strength. Determination of longterm mechanical properties for thermal. The aging time effects of the preexpanded polystyrene on the patterns mechanical properties k. Foam polystyrene can be more than 95 percent air and is widely used to make home and appliance insulation, lightweight protective packaging. Expand polystyrene is simply written as eps, and it is newly used as a kind of embankment filler. Polystyrene, polyethenylbenzene, lustrex, styron, vestyron, styrofoam. The 51 syntactic foam material shows superior mechanical properties in lieu of the composite action 52 by filler and matrix. A list of material properties for bulk general purpose polystyrene.
The aging time effects of the preexpanded polystyrene on. Polystyrene is a fragile trans parent material which is commonly called crystal ps to improve its mechanical properties, we resort to the. Determination of longterm mechanical properties for. Generalpurpose polystyrene is clear, hard, and rather brittle.
Split hopkinson pressure bar shpb has been used to investigate the ratedependent properties of foams with strain rates up to 3000 1s. Eps is supplied to molders in the form of a polystyrene bead. It has good thermal insulation properties with stiffness and compression strength. General purpose polystyrene gpps gpps is a grade of ps. Selected engineering properties and applications of eps geofoam. 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. 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. The compressive stress of homogenous eps expanded polystyrene 53 only foams with density of. Pdf the effect of free quenching on the mechanical, thermal, and thermophysical properties of polystyrene has been investigated.
Generalpurpose polystyrene gpps highimpact polystyrene hips. Pdf thermophysical and mechanical properties of polystyrene. 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. Pdf this work aims to study the effect of the incorporation of natural fibers on the mechanical properties of materials plastics composite. Here we shall learn about the physical, mechanical, optical, thermal, electrical, and chemical properties of polystyrene. 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 styrofoammodified asphalt binders. Pdf mechanical properties of polystyrene olive stone flour.
For such failure, the controlling material mechanical property is the elastic modulus. A full bar means this is the highest value in the relevant set. It has much improved chemical resistance, better heat stability, and improved mechanical properties. 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. The thermomechanical properties of recycled polystyrene. Three different thermal treatments were investigated. Static and dynamic mechanical properties of expanded polystyrene. Low thermal conductivity and adequate mechanical strength are desired for extruded polystyrene foams when they are applied as insulation materials.
Duncanchang parameters of eps are studied in the test. 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. 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. A systematic investigation was performed based on a statistical. 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. The properties of ps include two common variations. Effects of natural fillers on some properties of polystyrene. For more specific values, follow the links immediately below. Study on mechanical properties of expand polystyrene. Heikens laboratory of polymer technology, eindhoven university of technology, po box 5, eindhoven, the netherlands received 11 march 1973. Comparing effects of two triblock copolymers on morphology, thermal, mechanical and rheological properties of polystyrene low density polyethylene blends mahya afzali. Generalpurpose polystyrene gpps highimpact polystyrene.
All of our polystyrene and pmma polymethyl methacrylate microspheres are solid, nonporous polymer bead products. 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. The density of polystyrene can vary from 10kgm 3 to 50kgm 3. Mechanical properties of polystyrene and polypropylene based materials. One of the most important styrene copolymers is poly styrenecoacrylonitrile psan. 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. All you wanted to know about the amazing properties of. Four polystyrenepolyurethane mechanical blends were prepared with 5, 10, 20, and 40% thermoplastic polyurethane, respectively. Properties, performance and design fundamentals of expanded. Mechanical properties of polystyrenepolypropylene reinforced. 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. Split hopkinson pressure bar shpb has been used to investigate the ratedependent properties of foams with strain rates up to 3000 1s 11.
A 7080penetration grade asphalt binder was used and mixed with the processed waste styrofoam. Polystyrene is a fragile trans parent material which is commonly called crystal ps to improve its mechanical properties, we resort. The mechanical properties of a polymer include its strength, elongation, modulus, impact strength, and toughness. Mechanical properties of sugar palm fibre reinforced high. Plastic material properties table mechanical, physical.
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. Xpsa members collectively manufacture more than 95% of all xps destined for use in the north american market. 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. Dynamic mechanical properties of polystyrenepolyurethane. Garnweitner ab nanocomposites consisting of metal oxide nanoparticles in a polymeric matrix enable the improvement of. The graph bars on the material properties cards further below compare ps to.
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 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. 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. Mechanical properties of polystyrenelow density polyethylene. Ep were derived from stressstrain and impact measurements. Polystyrene ps is a clear, amorphous, nonpolar commodity thermoplastic that is easy to process and that can be easily converted into a large number of semifinished products like foams, films, and sheets. The relationships between the surface morphology of filler particles in polymer composites and their thermomechanical properties were investigated.
Expanded polystyrene eps is a generic term for polystyrene and styrene copolymers that are expanded. 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. Polystyrene literally translated is polymerised styrene. 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. Use our interactive properties table below to explore by property group, sort, or compare two or more plastic materials. It is widely employed in the foodservice industry as rigid trays and containers, disposable eating utensils, and foamed cups, plates, and bowls. An overview of the mechanical properties of foams and. The influence of the content of esters on the glass transition temperature, dynamic mechanical properties, flexural properties, hard ness and. Fracture cracks constitute regions of material discontinuity and frequently precipitate failure through fracture. 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. Based on abroad studies to eps mechanical properties, a further research on eps has been done in this paper. Pdf static and dynamic mechanical properties of expanded.
Masaryka 5555, 760 01 zlin, czech republic 2 trevos a. 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. Low density polyethylene ldpewhile the second group. Polystyreneabs and high impact polystyrene abs biqiong chen department of mechanical and manufacturing engineering, trinity college dublin, college green, dublin 2, ireland. Polymers free fulltext extruded polystyrene foams with. For chemically resistant plastic, view our chemical resistance of. Mechanical properties of oriented polystyrene film. 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.
The brick is produced through extrusion molding technique which can avoid the segregation of eps beads. Material properties of polystyrene and polymethyl methacrylate. In this study, processingstructuremechanical properties relationships in expanded wood fiber polystyrene composites epsc made with a physical blowing agent were investigated. Some mechanical properties of blends of polystyrene ps and ethylene propylenerubber. Expanded polystyrene eps and the environmentpage 4 applications and properties of eps the range of applications for expanded polystyrene is very wide. A halffull bar means its 50% of the highest, and so on. Mechanical properties of sandwich panels constructed from. Mechanical properties of solid polymers have been discussed in terms of two approaches. Mechanical properties of polystyrene low density polyethylene blends w. The trends of elastic modulus and yield stress were observed. Mixing percentages of styrofoam to asphalt sa were.
Selected engineering properties and applications of eps. Abstract the thermal and mechanical properties of polystyrene ps modi. Expanded polystyrene eps concrete is a new lightweight building material that exhibits good mechanical properties and a priori mechanical features that are. Eps block bearing test is studied by means of finite element method, and the. 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. Shear modulus and mechanical damping of polystyrene as a function of. Their impact properties were compared with pure polystyrene and commerical types of impact polystyrene. A list of material properties for bulk general purpose polystyrene and pmma from the.
Generally, the addition of 10wt% of fiber consisted of coconut and jute fiber has increased tensile properties of composites. Improvement of mechanical properties of anisotropic glassy. Thermal and mechanical properties of polystyrene modified. The material has been modified by the addition of flame retardant additives.
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