1220*3660*50*50*50 Flame Retardant And UV Resistant Ship Deck Frp Grating

1220*3660*50*50*50 Flame Retardant And UV Resistant Ship Deck Frp Grating

1220*3660*50*50*50 flame retardant and UV resistant ship deck Frp grating Evaluation of flame retardant basis The limit oxygen index of the sample was determined. Limit oxygen index (LOI) refers to the expression of the amount of oxygen required for sample combustion, so the flame retardancy of...

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1220*3660*50*50*50 flame retardant and UV resistant ship deck Frp grating


Evaluation of flame retardant basis


The limit oxygen index of the sample was determined. Limit oxygen index (LOI) refers to the expression of the amount of oxygen required for sample combustion, so the flame retardancy of fabric can be determined by measuring the oxygen index. The higher the oxygen index, the higher the oxygen concentration required to maintain the combustion, which means the more difficult it is to burn. The index can be expressed by the minimum volume percentage of oxygen required for a sample to maintain candle combustion in a mixture of nitrogen and oxygen. Theoretically, textile materials have self-extinguishing properties in the air as long as their oxygen index is greater than 21% (the volume concentration of oxygen in natural air). According to the size of the oxygen index, textiles are usually classified into four grades: flammable (LOI < 20%), flammable (LOI = 20% ~ 26%), non-flammable (LOI = 26% ~ 34%) and non-flammable (LOI > 35%).





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