Environmentally friendly flame retardants have the property of preventing the combustion of substances, and are mainly suitable for plastics with flame retardant requirements, delaying or preventing the burning of plastics, especially polymer plastics. Make it longer to ignite, ignite self-extinguishing, and difficult to ignite. Flame retardant is one of the important additives for plastics processing. It can make plastics flame retardant, self-extinguishing and smoke-suppressing, thereby improving the safety performance of plastic products. In terms of output and dosage, flame retardants have become second only to plasticizers, and the global consumption of flame retardants has exceeded 1 million tons.

The selection of flame retardant products generally follows the following requirements.

(1) High flame retardant efficiency;

(2) The flame retardant has the characteristics of non-toxic and non-irritating odor, and does not release toxic gases and a large amount of smoke during the flame retardant process.

(3) The flame retardant has good compatibility with materials, can be uniformly dispersed in plastic products, does not react with other components in the plastic, does not affect the color and surface finish of the plastic, and does not reduce the plastic. Mechanical properties, electrical properties and other performance properties.

(4) There are many types of flame retardants and their performances are different. They can be divided into additive flame retardants and reactive flame retardants according to different methods of use. Additive flame retardants are mostly used in thermoplastics. They are the most used flame retardants, accounting for about 90% of the world's total flame retardant output. Reactive flame retardants are mostly used in thermosetting plastics.