cuz it has a lot of air particles in between which allows the sound to travel slower.
in 1380 by Richard thinkton, England, Dublin.
Plastic foam containing pockets of air is a good insulator. The air pockets hinder the transfer of heat or electricity, making it difficult for these forms of energy to pass through the material. This makes plastic foam with air pockets an effective insulator for keeping things warm or preventing electrical conduction.
Polyurethane is known for its durability, flexibility, and resistance to abrasion and chemicals. It is also lightweight and can be molded into a variety of shapes, making it a versatile material for a wide range of applications.
The representative peak heat release rate for a sofa made of polyurethane foam is approximately 300 to 400 kW/m². This value can vary based on factors such as the specific formulation of the foam and the presence of other materials in the sofa's construction. Polyurethane foam is known for its high flammability, which contributes to its significant heat release during combustion.
Polyurethane foam insulation is the most popular insulation on the market today. It is easily installed, it is sprayed into the walls where it coats and hardens. All home improvement stores carry it.
styrofoam ,bubble wrap ,polyurethane foam, fleece ,aluminiaum.
insulator
is foam dirt an metal a good insulator
paper or foam cups
Foam is made of material that a very low level of confuctivity
Foam is made of material that a very low level of confuctivity
CPI spray is made of Polyurethane Foam. Polyurethane Foam is made by adding water to polyurethane plastics.
There are do-it-yourself polyurethane foam installation kits for sale at Fomo Foam. The kits come with foam and dispensing guns. There is a guide to polyurethane foam application at How To's and More. There are seven steps and pictures for each step.
no
Absolutely. You can buy polyurethane foam at a place like this: http://www.uscomposites.com/foam.html
The medical uses of Polyurethane Foam include wound dressings for exudating wounds. You can see a list of them at http://www.thomasnet.com/products/polyurethane-foam-30683502-1.html
of course beause it is a type of foam