2013年7月25日星期四

Flammability

Substances or materials have been treated with a flame spread properties significantly delayed. This range of choice in the use of materials serve as a guide, especially for building materials, ships, vehicles, home appliances and material requirements on high flame retardancy. Currently flame retardancy was evaluated in many ways, such as plastic flame retardant
Oxygen index, horizontal or vertical burning test method.
Definition
Material has a slow, stop or prevent a flame burning properties.
Ways
1 flame retardant to physical methods, this method is low cost and can be implemented quickly, but easy on the environment and a negative impact on the human body, usually by the national environmental directives restrictions.
(2) the material retardant modified.
3. The design of new polymer molecular structure, so that it has high flame retardancy essence, this is the most thorough way.

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