The reason why polyester-cotton fabrics are more difficult to flame retardant than other fabrics
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Polyester and cotton fabric flame retardant fabric market textile proban flame retardant technology
(1) Because cotton is a flammable fiber that does not melt or shrink. When polyester-cotton products burn, the cotton fiber Carbonization occurs, which acts as a scaffold for polyester similar to a candle wick, thus preventing the polyester droplets from leaving the fire source;
(2) Polyester and The mutual thermal induction of the two cotton polymers or their cracked products accelerates the overflow of the cracked products, so polyester-cotton fabrics ignite much faster than pure polyester and pure cotton;
(3) During the burning process, the flame retardant will migrate between the polyester and cotton components. Therefore, it also brings difficulties to the flame retardancy of polyester-cotton fabrics;
(4) When the polyester-cotton blended fabric is heated, the heated and melted polyester component will cover the surface of the polyester fiber, and the polyester fiber and the carbon generated by its cracking will form a skeleton, preventing The fabric shrinks, causing the molten polyester to act as a fuel in the fire zone, causing the fabric to burn more violently.
The polyester-cotton flame-retardant fabrics produced by the city’s textile industry generally contain more than 60% cotton. The fabrics are finished through the proban flame-retardant process, so that The fabric has durable flame retardant properties and remains flame retardant when washed more than 50 times.
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