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31

2022

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10

Flame retardant classification of flame retardant cloth


flame retardant cloth has surface covering flame retardant, endothermic reaction flame retardant, condensed phase flame retardant, liquid phase flame retardant and melt drop effect. below together in detail to understand.

1, flame retardant cloth covering flame retardant

selects some materials that melt when heated and can produce protective film substances from the surface of chemical fibers after cooling, or when heated, flame retardant vapor needs to be isolated from air on the surface of plant fibers and blocked O2 supply, thus achieving the actual effect of flame retardant.

2, endothermic reaction flame retardant

According to the exothermic reaction of flame retardant after combustion, more heat is absorbed, the temperature in the combustion area is reduced, and flame retardant is achieved.

3. Condensed phase flame retardant

flame retardant cloth uses flame retardant to harm the whole process of chemical fiber decomposition and reduce the formation of flammable gases. This method is especially suitable for cellulose fibers.

4. Liquid phase flame retardant

causes a lot of oxygen free radicals in the combustion process, and the addition of retarder can prevent the spread of flames by oxygen free radicals.

5, Melting Drop Utility

Synthetic fibers such as nylon and flame retardant cloth will melt and gather when heating, reduce the area, or drop off open flame to block combustion. Due to its unique characteristics,

flame retardant chemical fiber has broad application value in civil, military and industrial chain industries. It is not only suitable for flame retardant textiles for vehicles, trains and airplanes, but also for aerospace flame retardant composite materials, textile products decorated in entertainment clubs, restaurants and other places, hospital outpatient clinics, troops, forest fire fighting protective clothing and home textiles. The application of

flame retardant is to make cotton and wool fibers have flame retardant properties after flame retardant carding, while polyester cloth, aramid fiber and other man-made fibers are made of chemical fiber modified materials with flame retardant properties. Aramid fiber flame-retardant chemical fiber products have excellent characteristics such as soft hand feeling, good bulkiness, drape, moisture absorption and air permeability, relatively high strength, wear resistance, drape, good fabric smoothness, color fastness to washing, and non-melting drops under fire, thus reaching the quality standards of good flame-retardant clothing and decorative design fabrics. The flame retardant properties of flame retardant fabrics required in the functional test of flame retardant fabrics are actually only one of the provisions of protective clothing. It is suitable for clothing that is used by users to use fire, release flames, and wear flame retardant clothing around molten metal and places with flammable substances and terrible temper, and is not suitable for fire emergency rescue. At present, the performance testing of flame retardant textile products in China usually adopts GB/T5455-2014 "vertical method of textile combustion performance test". Its function is to use the flame generated by the required rectifier to ignite the core at the bottom of the vertical test piece. After the specified ignition time, the continuous combustion duration, combustion time and damage length of the test piece are accurately measured. This method is suitable for the measurement of flame retardant properties of various textiles and their products, such as food, decorative design, transportation and vehicle interiors.


flame retardant cloth