Update:
Every year, fires cause thousands of deaths, tens of thousands of injuries and billions of dollars in damage. The use o...
Every year, fires cause thousands of deaths, tens of thousands of injuries and billions of dollars in damage. The use of strict building codes is one way to reduce these losses. Local building codes usually require the use of flame-retardant materials. These materials are classified according to their effect on flame spread.
Classification reason
In the 1940s and 1950s, flammable building materials were associated with many tragedies involving fires in commercial facilities, resulting in many deaths. Over time, governments at all levels have revised the fire protection standards. This sets strict building code requirements for building materials based on the flame-retardant classification system.
Assessment of flame spread
Flame retardants prevent the spread of flames by forming a protective barrier between the fire and flammable materials such as wood. The extent to which a specific product performs this task is defined as its flame propagation level. Compared with the control material, this grade provides the relative speed of flame propagation on the surface of the treated material. Generally speaking, the control materials are red oak with a flame spread of 100 and zero-grade asbestos cement board.
Material testing-testing standards
Flame-retardant materials have been tested in many testing laboratories, and in the United States, flame-retardant testing is conducted in accordance with the requirements of the "Building Material Fire Hazard Classification" test standards called UL723 and CAN/ULCS-102. Canada. These test standards are the National Fire Protection Association's "Test Methods for Surface Burning Performance of Building Materials" test standards (also known as NFPA 255) and the National Fire Protection Association's test standards (also known as ASTM E-84). ). .. However, the contribution of UL standard fuel is also measured.
Life Safety Code 101
In terms of fire safety, most local building codes follow the recommendations of the State Fire Department’s Life Safety Code. Section 101 of this specification describes the flame retardant classification system. This classification system is based on the flame retardancy evaluation of flame retardant materials. The system has five partitions, represented by the letters A to E.
Classification of flame retardants
The flame retardant rating of Class A flame retardants ranges from 0 to 25. These materials can effectively withstand severe fires. Class B flame retardants range from 26 to 75 flame retardants. These materials can effectively resist medium fire. Class C flame retardants range from 76 to 200 flame retardants. These materials can effectively withstand mild fires. Class D materials have a flame propagation rating between 201 and 500. Class E materials have a flame propagation rating of more than 500. Class D and E materials are not considered effective against exposed fires.
Jimmy yuan
Zhejiang Ruico Advanced Materials Co., Ltd. (Stock No.873233)
Add: No.188, Liangshan Road, Linghu Town, Nanxun District, Huzhou City, Zhejiang Province, China 313018
Phone: +86 (572) 2903236
Fax: +86 (572) 2905222
Email:[email protected]
English
España
русский
Deutsch
No.188, Liangshan Road, Linghu Town, Nanxun District, Huzhou City, Zhejiang Province, China
+86 (572)
2903236
+86 (572)
2905222
+86 15088303595
+86 15088303595
