What is polyester-cotton flame-retardant fabric? Polyester-cotton flame-retardant fabric is popular among consumers due to its excellent wearing performance and durability. However, since it is easy to burn and cause fire accidents and huge losses, the research on flame-retardant finishing has received widespread attention. So far, people have found that flame-retardant finishing of polyester-cotton fabric is much more difficult than flame-retardant of any of its components.
The main reasons are:
A. When 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 charcoal generated by its cracking will form a skeleton to prevent the fabric from shrinking, causing the molten polyester to become a fuel in the fire zone, making the fabric burn more violently.
B. During the combustion process, the flame retardant will migrate between the two components of polyester and cotton, which also brings difficulties to the flame retardancy of polyester-cotton fabrics;
C. The mutual thermal induction of the two polymers of polyester and cotton or their cracking products accelerates the overflow of the cracking products, so the ignition speed of polyester-cotton fabrics is much faster than that of pure polyester and pure cotton;
D. Because cotton is a flammable fiber that does not melt or shrink, when polyester-cotton products burn, the cotton fiber carbonizes, which plays a role similar to a candle wick support for polyester, thereby preventing the molten droplets of polyester from leaving the fire source;
Therefore, to reduce the flammability of polyester-cotton fabrics, the following points need to be achieved:
A. Eliminate the skeleton effect and the interference of the two components.
B. Each component in the blended fabric must be flame retardant;
C. When flame retardant finishing is applied to blended fabrics, appropriate flame retardants should be used, and their effects should be complementary or non-interfering;
At present, the CVC flame retardant fabric that is strong and durable and can meet the flame retardant performance requirements is a blend of cotton fibers above 60% and polyester fibers below 40%. It has the excellent properties of both cotton and polyester fibers. It has good strength and better wrinkle resistance and wear resistance.