NFPA 2112 Flame retardancy Testing NFPA 2112-2012 Fire Resistance Clothing Testing for Protection of Industrial Personnel This standard establishes minimum design requirements, performance, identification requirements, and fire resistance standards for protective clothing. Article 8.3 Flame retardancy test: This test method is applicable to each layer of flame retardant clothing fabric. NFPA 2112: American Fire Protection Association Flame-retardant Clothing Standards The American Fire Protection Association has regulations for industrial flash fire flame-retardant protective clothing in the following areas: product labeling, user information, clothing design, fibers, stitching, accessories, and signage. NFPA 2112 is the standard for industrial flame retardant protective clothing and serves as the experimental basis for establishing future laws and regulations on flame retardant protective clothing for industrial use. It comprehensively elaborates on the thermal protection performance requirements of industrial flame-retardant protective clothing, including a series of thermal protection performance tests. (1) Vertical combustion performance test. Expose the material to a standard flame for 12 seconds, remove the flame, and determine whether it will be ignited and the length of combustion damage. (2) The thermal stability test is basically the same as the 500 ° F oven test in the NFPA 1975 standard. (3) Thermal radiation and thermal convection mixed action protection performance test, abbreviated as TPP method. This method involves placing a 6 square inch piece of fabric under a thermal convection and radiation heat source with a total energy density of 2 cal/(cm2 · s), and then recording the time required to achieve a second degree burn. The TPP value is the value of time multiplied by cal/(cm2 · s). The higher the TPP value, the stronger the protective ability provided by the fabric. Unlike the vertical combustion test, the TPP test can tell us how much energy the simulated human skin needs to absorb to achieve secondary burns through various fabrics. That is to say, the higher the TPP value, the better the protection of the fabric against exposure to high temperatures and flames. The single TPP value is the most direct manifestation of thermal protection performance. (4) Thermal manikin test. This experiment involves wearing fire-resistant clothing on a 6-inch tall human model with 122 temperature testers and exposing it to a 2 cal/cm2 · s heat source synthesized by a 12 propane flame injector. Based on the data collected from 122 temperature testers, the computer simulates the degree and location of second and third degree burns that the human skin may experience. Author: Delta Delta Instruments https://www.bilibili.com/read/cv12733932/ Source: Bilibili