Fiber Flame Retardant Analysis

Common fiber materials are extremely flammable and their applications are limited, resulting in an increasing demand for flame retardant fibers. Therefore, it is very important to characterize the flame retardant properties of fibers and their products. Alfa Chemistry provides comprehensive flame retardant performance analysis and testing services for fiber materials. Our fiber analysis laboratory has a strong technical infrastructure and a team of well-trained and experienced experts.

Optional Service Items

Combining rich analysis experience and advanced technology, our team provides systematic and accurate flame retardant performance analysis services for fiber materials, as well as detailed analysis results and reports. Our fiber flame retardant performance analysis projects include but are not limited to the following:

• Qualitatively analyze the combustion performance of fiber materials, such as observing the fiber's approaching flame, the combustion state in the flame, the odor emitted during combustion, and the state of ash after combustion.
• Determine the limiting oxygen index of the fiber material, that is, the minimum oxygen concentration required for the sample to maintain stable combustion in a mixed flow of oxygen and nitrogen.
• Determine the decomposition temperature of the fiber material, i.e., the temperature at which it begins to decompose appreciably to give off flammable gases.
• Determination of the heat of combustion of fibrous materials, i.e., the heat released during combustion
• Determination of the amount of smoke produced by the fibrous material.
• Analysis of the toxicity of combustion gases. Common combustion gases include combustible gases, such as methane, ethane, aromatic hydrocarbons, etc.; non-combustible gases, such as carbon dioxide, nitrogen, ammonia, water vapor, hydrogen halide, SO₂, NOX, formaldehyde, HCN, etc.

Analytical Methods

• Oxygen index method (The higher the limiting oxygen index, the better the flame retardant performance.)
• Vertical combustion method (Fibrous materials are usually difficult to apply horizontal burning test method.)
• Cone calorimetry can be used to determine the heat released by fibrous materials during combustion.
• The 45° flame contact number method is used to measure the number of times the material needs to contact the flame at a distance of 90mm from the lower end of the sample. The fibers with the number of close to fire reaching or more than 3 times are flame-retardant fibers, and the total number of close-to-fire times represents the flame retardant grade.
• The mass measurement method deduces the amount of smoke by measuring the loss of mass of the material before and after smoking.
• The photometric method determines the amount of smoke produced by measuring the attenuation effect of the generated smoke on the light intensity.

Overview of flammability test methods for flame retardant materials.

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