Combustion testing of automotive interior materials is one of the most important methods for evaluating their burning performance and fire safety. The following is a commonly used combustion test method for automotive interior materials:
1. Test standards: Select the applicable test standards, such as ISO 3795, FMVSS 302, GB 8410, etc.. These standards provide specific requirements and test methods for combustion testing. 2.
2. Sample preparation: According to the standard requirements, prepare samples that meet the size and shape requirements. Usually the actual interior materials or representative small samples are used for testing.
3. Ignition source: Use appropriate ignition source, such as flame, hot wire, etc., to apply ignition source on the sample to simulate fire situation.
4. Observation and Recording: Observe the burning behavior and combustion characteristics of the samples, including burning rate, flame spread, and burning time. Meanwhile, record the situation of the samples in different combustion stages.
5. Evaluation of combustion performance: Evaluate the combustion performance of the samples according to the standard requirements, including combustion rate, flame spread, combustion duration and other indicators.
6. Determination of results: According to the test results and the requirements set by the standard, determine whether the sample meets the requirements of combustion performance. Usually based on combustion time, flame propagation distance, flame extinguishing time and other indicators for judgment.
It should be noted that different standards and regulations may have different requirements and indexes for combustion tests, so when conducting combustion tests, specific operations should be carried out according to the applicable standards and ensure the accurate calibration and operation specification of instruments and equipment. In addition, in order to ensure the fire safety of vehicles, it is recommended that when designing and selecting materials for vehicle interiors, preference should be given to materials with good combustion properties.