Asked in Civil EngineeringVolumeWeight and MassDensity
Weight and Mass
What is the density of polystyrene?
February 28, 2011 11:35AM
Regarding the processed material there are two main types of polystyrene density-wise;
EPS = Expanded PolyStyrene:
most used in the range of: 10 - 50 g/l
EXPS or XPS = EXtruded PolyStyrene:
most used in the range of: 25 - 45 g/l
Asked in The Difference Between
What is the difference between polystyrene and Styrofoam?
Asked in Inventions, Business Accounting and Bookkeeping, Mathematical Finance, The Difference Between
What is the unit cost of polystrene?
Asked in History of Science, Technology
What are the 7 classes of plastic?
Asked in Spectroscopy, Plastics and Polymers
Why is polystyrene brittle?
Unfilled polystyrene is also known as crystal polystyrene (PS) or general purpose polystyrene (GPPS). However, since crystal polystyrene is brittle, other polymers are added to polystyrene to improve its strength, and copolymers are formed as a result. One such copolymer is high impact polystyrene (HIPS), which is produced by adding polybutadiene rubber to polystyrene during the polymerization process. HIPS is tougher and has a greater impact strength than unfilled polystyrene. There are different types of polystyrene. Extruded polystyrene (XPS) is one form of the polymer that has high tensile strength, with good elasticity. It is commonly known as Styrofoam™. The other common form of polystyrene is expanded polystyrene (EPS). Both EPS and XPS are made from similar materials but there are difference between the two. XPS has a higher density as compared to EPS, due to the absence of air passages between its cells. The higher density makes XPS more rigid and strong. Also, XPS is waterproof and is an effective thermal insulator. Read more in the related link.
Asked in Chemistry
Does polystyrene expand and shrink in different temperatures?
Asked in Science, Jobs & Education, Physics
What is the true density of polystyrene?
Polystyrene is a common plastic that most of us encounter dozens of times a day in our travels, most often in packaging. The thing about polystyrene is that it has a number of forms (chemical structures). Consider this chemical formula: C6H5CH=CH2 This is (monomer) styrene. If we link a bunch of these together, we end up with poly (many) styrene. Consider this chemical formula: (C8H8)n This depicts the basic (monomer) styrene with the subscript n to denote that a number of different molecules can be made up. And if you guessed that these molecules have different densities, you'd be correct. In general, the density of polystyrene varies from about 1.06 to 1.12 g/cc, so there is no "true" or precise density for polystyrene.
Examples of objects whose density is less than water's?
Asked in Lighthouses, Home Construction
Can high density expanded polystyrene be used as wall of house?
Asked in Weight and Mass, How To
How to calculate weight of Expandable Polystyrene Thermocol if density is given?
Asked in Plastics and Polymers
Which has more crystalline atactic polystyrene or syndiotactic polystyre?