What are 3 physical properties of Styrofoam?
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What are 3 physical properties of Styrofoam?
Polystyrene homopolymer, known as “crystal” polystyrene in the trade, is an amorphous, colorless, and transparent commodity thermoplastic. It is rigid, brittle, relatively hard and has excellent gamma radiation resistance, good electrical properties but has poor chemical and UV resistance.
What properties does Styrofoam have?
Properties of Expanded Polystyrene
- Light Weight. Comprised of about 98 percent air, expanded polystyrene is extremely lightweight, making it ideal for transport and installation.
- Moisture Resistant.
- Durability.
- Thermal Efficiency.
- Versatility.
- On-Site Ease of Use.
- Environmental Sustainability.
What are the physical characteristics of expanded polystyrene?
EPS is very lightweight with very low thermal conductivity, low moisture absorption and excellent cushioning properties. One of the serious limitations of polystyrene foam is its rather low maximum operating temperature ~80°C.
What is the R-value of expanded polystyrene?
3.6 per inch
EPS insulation features an average r-value of 3.6 per inch. In addition to providing energy efficiency, EPS without film facers has a perm rating of up to 5.0.
What is polystyrene material?
Polystyrene (PS) is a polymer made from the monomer styrene, a liquid hydrocarbon that is commercially manufactured from petroleum. At room temperature, PS is normally a solid thermoplastic but can be melted at higher temperature for moulding or extrusion, then resolidified.
How is polystyrene prepared state its properties and uses?
It is produced by the polymerization of styrene and is the most widely used plastic. At room temperature, the thermoplastic polymer is a solid but when heated above 100 °C it flows. It becomes rigid again when it cools down. Polystyrene is insoluble in water.
What is the physical property of plastic?
Compared to metal, plastic has a low melting point, is highly malleable, and can be molded easily into basic or complex forms. That malleability also increases the fabrication and production of parts and pieces.
What is expanded polystyrene made of?
Foamex STYROBOARD EPS expanded polystyrene is a rigid cellular plastic foam material derived from petroleum and natural gas by-products. Styrene is produced from benzene and ethylene, and is polymerised in the presence of catalysts, usually organic peroxides.
Is expanded polystyrene the same as styrofoam?
The foam that you formerly knew as styrofoam is actually expanded polystyrene foam or EPS. This material is made from polystyrene, a plastic that’s often used to make clear products like food packaging or lab equipment.
What is the density of polystyrene?
0.96–1.05 g/cm3
Polystyrene
| Names | |
|---|---|
| Chemical formula | (C8H8)n |
| Density | 0.96–1.05 g/cm3 |
| Melting point | ~ 240 °C (464 °F; 513 K) For Isotactic Polystyrene |
| Boiling point | 430 °C (806 °F; 703 K) and depolymerizes |
What does N mean in polystyrene?
(C8H8)n is a synthetic aromatic hydrocarbon polymer with chemical name Polystyrene. Polystyrene is a hard, brilliantly transparent, stiff resin.
What is the difference between polystyrene and styrofoam?
Polystyrene is a common polymer material produces from the monomer, styrene. Styrofoam is a form of polystyrene. The key difference between polystyrene and Styrofoam is that the polystyrene is a form of synthetic aromatic hydrocarbon polymer whereas the Styrofoam is a commercial brand of polystyrene.
What are the 5 properties of plastic?
Properties of Plastics
- They are light in weight and are chemically stable.
- Easily moulded into different shapes and sizes.
- Good insulation and low thermal conductivity.
- Good impact resistance and they do not rust.
- Good transparency and wear resistance.
- Poor dimensional stability and can be easily deformed.
What are expanded polystyrene?
Expanded polystyrene (EPS) is a lightweight cellular plastic material consisting of small hollow spherical balls that are expanded through a molding process in our factories to create a cost effective, highly efficient material used in hundreds of different applications.
What is the R-value of 1 inch thick Styrofoam?
STYROFOAM extruded polystyrene insulation is rated at an R-value of 5.0 per inch at 75°F.
