GB/T 42266 - 2022 for flexible porous polymer materials. This standard specifies a laboratory method for evaluating the combustion characteristics of a small sample by horizontal combustion under a small flame. Clarify the specimen's prepative details, such as size and shape requirements. Detail the combustion test process, including the application method of the small flame, the test environmental conditions, etc. By recording data such as flame propagation speed and combustion range, the flame retardant performance of the material can be accurately judged, providing a key evaluation basis for the safety application of the material in construction, home and other fields.