There are usually two methods for testing the performance of flame retardant fabrics. 1. Combustion test method: According to the relative position of the sample and the flame, it can be divided into vertical method, 45 degree method and horizontal method. The vertical method is generally used for flame retardant properties of clothing fabrics, decorative fabrics, tent fabrics, etc.; the 45-degree tilt method is suitable for interior decoration fabrics in aircraft; the horizontal method is suitable for carpets and other matting fabrics and automobile interior fabrics. Judgment is based on the burning rate of the fabric: after the fabric is in contact with the flame for a certain period of time according to the prescribed method, the flame is removed, and the time for the fabric’s afterburning and smoldering and the damage length of the fabric are measured. The shorter the afterburning and smoldering time and the lower the damage length, the better the flame retardant performance of the fabric.
2. Extreme oxygen index method: Place the clamped sample vertically into a transparent combustion tube. There is an upward moving oxygen and nitrogen gas flow in the tube. Ignite the sample end, and then observe the burning phenomenon of the Oxford cloth. And compare its continuous burning time or damage length with the prescribed limit value. Through experiments on a series of samples in different oxygen concentrations, the lower oxygen concentration value required for combustion can be maintained.
The judgment is made by measuring the extreme oxygen index (LOI) of the sample: the oxygen index refers to the amount of oxygen required for burning the fabric. The higher the oxygen index, the higher the oxygen concentration required to maintain combustion, that is, It means it is more difficult to burn. The volume concentration of oxygen in the air is approximately 21%. If the oxygen index is less than 20%, it is a flammable fiber; if the oxygen index is between 20% and 26%, it is a flammable fiber; if the oxygen index is between 26% and 34%, it is a flame-retardant fiber; if the oxygen index is above 35%, it is non-flammable. fiber. Note: The oxygen index method is more suitable for process experiments.
Independently research and develop flame-retardant fabrics. According to different requirements of customers, the following specifications are available: 210D, 300D, 420D, 600D, 900D, 1200D, 1680D Oxford cloth, etc., which have temporary flame-retardant effects. Semi-durable flame retardant effect and durable flame retardant effect can also be provided with waterproof, flame retardant, PVC/PU coating, silver coating, composite and other treatments according to customer needs. You can contact the online customer service on the website, or you can Leave a message and we will provide dedicated service to meet all your requirements.
</p
