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thermocol is the common name for air bubbled polystyrene.
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Is styrofoam the same as polystyrene?
They are made from the same polymer, polystyrene. Usually polystyrene is clear, hard and rigid, for example in CD cases. However, styrofoam is created by blowing air through liquid polystyrene. The bubbles are locked in the polystyrene as it solidifies, giving the syrofoam used in packaging and cups. The reason it is compressible is because the air is compressed, rather than the hard, rigid polystyrene itself.
Why is polystyrene good for ear defenders?
Apparently, the polystyrene like blocks the air particles and absorbs them! I THINK>>>>> ;) XX xx
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.
What is an aerobic fermenter?
An aerobic ferment er is one in which there is provision for the introduction of sterile air into the reaction. The sterile air is introduced into the interiors of the fermenter through an attachment called a sparger. Air is bubbled through. The bubbles are then dispersed throughout the reactor by an impeller (a mixing apparatus that stirs the entire reaction contents in the fermenter).
What makes Styrofoam fluffy?
It is expanded polystyrene. The solid plastic contains millions of tiny bubbles of gas or air. It is the bubbles that make it fluffy- and a great insulator and shock absorbing material.
Is styrofoam the same as polystyrene?
They are made from the same polymer, polystyrene. Usually polystyrene is clear, hard and rigid, for example in CD cases. However, styrofoam is created by blowing air through liquid polystyrene. The bubbles are locked in the polystyrene as it solidifies, giving the syrofoam used in packaging and cups. The reason it is compressible is because the air is compressed, rather than the hard, rigid polystyrene itself.
Why is polystyrene good for ear defenders?
Apparently, the polystyrene like blocks the air particles and absorbs them! I THINK>>>>> ;) XX xx
Why would a polystyrene cup be a good insulator of heat?
Polystyrene is a substance that when in a solid state has a lot of holes. These holes trap air inside them and since air is a good insulator, the polystyrene cup is a good insulator. *Air is only a good insulator when not moving, hence why a breeze feels cold.
Is polystyrene a conductor?
polystyrene along with other porous (objects which have a lot of air in them) such as Styrofoam water, wood and other materials are insulators, not conductors.
Is Polystyrene a good thermal conductor?
No, it's not, though it's better than you might think if you equate polystyrene with Styrofoam. Styrofoam is made of polystyrene, but it's the trapped air that makes it such a good insulator.
Why are cool boxes lined with expanded polystyrene with air bubbles in it?
Air is a poor conductor of heat. Likewise, the thin walls of the bubbles of polystyrene are poor conductors. Bubbles of air, rigidly fixed in a polystyrene matrix, cannot transfer heat by convection. That leaves reducing radiation as the only unaddressed mechanism for controlling heat loss. Its low cost and ability to be molded makes expanded polystyrene an economical choice for an effective insulator.
Is polystyrene a good thermal insulator?
yes it is because of all the air bubbles in it
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.
What gas is used in refrigerator and air conditioner?
Common name is Freon.Common name is Freon.
Why are cool boxes lined with expanded polystyrene?
ANS1 They are lined with it because expanded polystyrene is made up of roughly 95% air. This creates a barrier between the inside of the cooler box and the outside temperatures. Essentially it regulates the inside and outside temperatures. ANS2: Air is a poor conductor of heat. Likewise, the thin walls of the bubbles of polystyrene are poor conductors. Bubbles of air, rigidly fixed in a polystyrene matrix, cannot transfer heat by convection. That leaves reducing radiation as the only unaddressed mechanism for controlling heat loss. Its low cost and ability to be molded makes expanded polystyrene an economical choice for an effective insulator.
If air is bubbled through hydrogen carbonate solution which is then poured into a test tube with small snails what colour would it change to?
yellow
What dissolves polystyrene?
polystyrene foam (styrofoam cups and packaging materials) is soluble in acetone.It is not melted but dissolved.The acetone dissolves the long polymer strands releasing the trapped air(foam) and thus the structure collapses
