What kind of fabric is flame retardant fabric
What kind of fabric is flame retardant cloth? It is a cloth that is fireproof and flame retardant.
There are two ways to achieve flame retardant and fireproofing effects on flame retardant cloth. One is to copolymerize flame retardant monomers with polymers or add flame retardants to the polymer and make them through miscibility processing. into blended fibers, and then woven into flame-retardant fabrics; another method is the post-finishing process, which is to treat the Oxford cloth with flame retardant by spraying, padding or coating to make it flame-retardant when encountering fire The agent will undergo physical and chemical reactions to achieve flame retardant effects.
How to evaluate the flame retardant performance of flame retardant cloth
On the one hand, we must Look at the burning performance of the fabric: judge from the burning rate of the flame-retardant fabric, that is, the fabric with flame-retardant finishing is in contact with the flame for a certain period of time according to the prescribed method, and then the flame is removed, and the time for the flame-retardant fabric to continue to burn is measured. and flame-free burning time, as well as the degree of damage to the flame-retardant cloth. The shorter the flame burning time and the flameless burning time, and the lower the degree of damage, the better the flame retardant performance of the flame retardant fabric; otherwise, the flame retardant performance of the fabric is poor.
Another method is to judge by the oxygen index: flame-retardant cloth requires oxygen to burn, and the oxygen index is required for fiber burning. The expression of oxygen, so the flame retardant performance of flame retardant cloth can be determined by measuring the oxygen index. The higher the oxygen index, the higher the oxygen concentration required to maintain combustion, which means the more difficult it is to burn: this index can be used with samples mixed with nitrogen and oxygen. To maintain candle-like combustion in a gas, a small volume percentage of oxygen is required. If the oxygen index is less than 20%, it is a flammable fiber; if the oxygen index is between 20 and 26%, it is a flammable fiber; if the oxygen index is between 26 and 34%, it is a flame-retardant fiber; if the oxygen index is above 35%, it is a non-flammable fiber.
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