Common test items and methods for flame retardant protective clothing
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Flame retardant protective clothing flame retardant performance flame retardant clothing market textile
1. Flame retardant performance test of flame retardant protective clothing
There are currently three main methods used to test the flame retardant performance of flame retardant protective clothing: vertical burning method, thermal protective performance (TPP) test method, and thermal instrument test method.
Vertical burning test method, test process: use a standard methane gas flame to continue burning the fabric for 12 seconds, then remove or extinguish the fire source, and observe the flame retardancy of the test The fabric continues to burn, and the damaged length of the fabric after burning is measured. The vertical burning test method is to simulate the burning state of the fabric when the flame starts from the bottom of one end of the flame-retardant protective clothing fabric, which rarely occurs in actual real fires.
The thermal protection performance (TPP) test method is closer to the real situation and can better reflect the thermal protection performance of flame-retardant protective clothing. It is widely used by the American NFPA Association and national standards. use.
The thermal instrument test method uses a thermal instrument that simulates a human model to conduct a more intuitive and comprehensive test of flame-retardant protective clothing. It is a test method for actual fire occurrences. It is a more realistic simulation of the time and can better reflect the thermal protection performance of flame-retardant clothing. It is one of the most advanced thermal burn assessment equipment in the world.
2. Mechanical fastness performance test of flame-retardant protective clothing
Resistance The test of mechanical fastness properties of fire protective clothing mainly includes tensile breaking properties and tearing destructive properties.
The tensile fracture property of the fabric indicates the elongation and deformation ability of the fabric when it bears a large load, and the work of rupture load indicates that the area under the elongation curve is the work of rupture. , is the energy absorbed when the fabric is stretched to break, that is, the fabric has the inherent binding energy to resist external damage. The stronger the fabric’s breaking power, the stronger the fabric. The size of the work of rupture can reflect the wearing fastness of the fabric, and wearing time proves that fibers and fabrics with relatively low strength and high elongation are more durable.
The tearing and destructive performance is more important. During actual wearing and use, the fabric is caught by foreign objects and partially torn due to force. In production, the tear strength can better reflect the fastness of the fabric than the tensile breaking strength.
In summary, when evaluating the mechanical properties of flame-retardant protective woven fabrics, the breaking strength does not represent the quality of its mechanical durability. Comprehensive consideration is given to elongation at break, work of rupture, tearing strength and wear resistance. When other conditions are the same, fiber fabrics with relatively low strength and high elongation have better mechanical durability and can provide better fastness performance during actual wearing and use.
European Union standard EN ISO11611/EN ISO11612, American standard NFPA2112, etc. have conducted detailed testing on relevant protective clothing. Flame-retardant protective clothing produced by Municipal Textile The flame-retardant fabrics produced can fully meet the above various testing standards, and the flame-retardant jumpsuits, flame-retardant overalls, flame-retardant separates, flame-retardant jackets, flame-retardant shirts, etc. also fully meet the standard requirements. And after many years of research and production, we have continuously developed new varieties and new styles. Customers can order according to their own needs.
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