Fires occur frequently in daily life. On average, large and small fires in China will cause economic losses of more than 500 million yuan to the society every year. What is more worthy of attention is the huge disaster and pain brought to the fire victims, so it is very important that the materials we come into contact with in life have fire-resistant and flame-retardant functions. Therefore, with the development of flame retardant technology, a lot of flame retardant materials have been produced. For their specification eligibility, environmental protection, and usability, there are corresponding flame retardant test standards internationally and in various countries. 1. About flame retardant materialsFlame retardant, according to the literal understanding, is to prevent burning or ease the spread of burning. Flame retardant material is a kind of protective material, which can inhibit or delay combustion and is not easy to burn itself. There are solid materials such as cement, steel, and glass. There are liquids, also referred to as flame retardants. If the flame retardant is coated on the surface of various materials such as the fire wall, it can ensure that it will not be burned in the event of a fire, and it will not aggravate and expand the burning range. The products of flame retardant materials can be mainly divided into seven categories: flame retardant fabrics, flame retardant chemical fibers, flame retardant plastics, flame retardant rubber, fire