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Cross non woven fabric/ Cambrella Fabric
Reasons that affect the flame retardancy of non-woven fabrics
by：Sunshine
2021-04-09
The reasons why polyester cotton has a flame-retardant effect are as follows:
(1) Conventional polyester cotton has a limiting oxygen index of 20-22 (the oxygen concentration in the air is 21%), which is a kind of combustible fiber, which is easy to ignite but has a slower burning speed.
(2) If the polyester slice is modified and denatured, it will have a flame-retardant effect. Most of the long-lasting flame-retardant fibers use modified polyester chips to produce flame-retardant polyester cotton. The main modifier is phosphorus series compounds. Phosphorus will combine with oxygen in the air under high heat to reduce the oxygen content. The flame retardant effect.
(3) Another way to make polyester cotton flame-retardant is surface treatment. This kind of product is thought to reduce the flame retardant effect after the treatment agent is processed many times.
(4) Polyester cotton has the characteristic of shrinking when encountering high heat. When the fiber encounters a flame, it will not be easy to ignite due to shrinkage and separation from the flame, which produces a proper flame retardant effect.
(5) Polyester cotton will melt and drip when it encounters high heat, and the melting and dripping phenomenon of polyester cotton after ignition can also take away some of it.
Heat and flame produce proper flame retardant effect.
(6) However, if the fiber is stained with oil that is easy to support combustion or use silicone oil that can set the polyester cotton, the polyester cotton will reduce the flame-retardant effect. Especially when polyester cotton containing SILICONE oil agent encounters flame, the fiber cannot shrink and burn.
(7) The method of increasing the flame retardancy of polyester cotton, in addition to the use of flame-retardant modified polyester chips to produce polyester cotton, the use of oil with higher phosphate content on the surface of the fiber for post-treatment can also increase the fiber Flame retardant effect. Because the phosphorous molecules released by phosphate encountering high heat will combine with oxygen molecules in the air and reduce the oxygen content in the air at the same time, so as to increase the flame-retardant properties.
(1) Conventional polyester cotton has a limiting oxygen index of 20-22 (the oxygen concentration in the air is 21%), which is a kind of combustible fiber, which is easy to ignite but has a slower burning speed.
(2) If the polyester slice is modified and denatured, it will have a flame-retardant effect. Most of the long-lasting flame-retardant fibers use modified polyester chips to produce flame-retardant polyester cotton. The main modifier is phosphorus series compounds. Phosphorus will combine with oxygen in the air under high heat to reduce the oxygen content. The flame retardant effect.
(3) Another way to make polyester cotton flame-retardant is surface treatment. This kind of product is thought to reduce the flame retardant effect after the treatment agent is processed many times.
(4) Polyester cotton has the characteristic of shrinking when encountering high heat. When the fiber encounters a flame, it will not be easy to ignite due to shrinkage and separation from the flame, which produces a proper flame retardant effect.
(5) Polyester cotton will melt and drip when it encounters high heat, and the melting and dripping phenomenon of polyester cotton after ignition can also take away some of it.
Heat and flame produce proper flame retardant effect.
(6) However, if the fiber is stained with oil that is easy to support combustion or use silicone oil that can set the polyester cotton, the polyester cotton will reduce the flame-retardant effect. Especially when polyester cotton containing SILICONE oil agent encounters flame, the fiber cannot shrink and burn.
(7) The method of increasing the flame retardancy of polyester cotton, in addition to the use of flame-retardant modified polyester chips to produce polyester cotton, the use of oil with higher phosphate content on the surface of the fiber for post-treatment can also increase the fiber Flame retardant effect. Because the phosphorous molecules released by phosphate encountering high heat will combine with oxygen molecules in the air and reduce the oxygen content in the air at the same time, so as to increase the flame-retardant properties.
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