Flame retardant application of dicyandiamide cyanurate in polypropylene

Flame retardant application of dicyandiamide cyanurate in polypropylene

Article from: Plastics Industry April 2021 Volume 49 Issue 4

DICY is more and more widely used in the field of plastic flame retardant, it is named dicyandiamide cyanurate (DICY-CA), and is compounded with piperazine pyrophosphate (PiPP) for flame retardant of PP resin. As an organic peroxide, DICY has a high decomposition temperature, strong oxidation and the ability to generate highly reactive free radicals, so it can fully play a flame retardant role. PiPP has a good flame retardant effect due to the presence of phosphorus, nitrogen, bromine and other elements.When DICY-CA is compounded with PiPP, the flame retardant properties are further improved by forming a complex in the PP resin. The main principle is that DICY-CA can form an organic-inorganic hybrid system with PiPP, which provides a longer composite decomposition path, thereby preventing the formation and transfer of gas-phase free radicals, delaying the flame propagation rate, and playing an effective flame retardant role. At the same time, this composite material has good heat resistance and chemical stability, and will not adversely affect the original properties of PP resin.

Compared with traditional flame retardants, the advantages of DICY-CA/PiPP are mainly reflected in the following aspects:

1. Flame retardant effect is remarkable. DICY-CA/PiPP compound can effectively reduce the combustion rate of plastics and the speed of flame spread, effectively reduce the release of smoke and toxic gases, and improve the safety of personnel and equipment.

2. Good heat resistance. DICY-CA has a high decomposition temperature in composite materials, which can resist thermal decomposition in a high-temperature environment and maintain a good flame retardant effect.

3. High chemical stability. DICY-CA/PiPP composites have good chemical stability, will not affect the physical and chemical properties of plastics, and maintain a good service life.

4. Low production cost. Compared with traditional flame retardants, the production cost of DICY-CA/PiPP compound is lower, which can greatly reduce the production cost of enterprises and improve production efficiency.

In short, DICY has a very broad application prospect in the field of plastic flame retardant, and its composite materials have good flame retardant performance and stability, which can meet the application needs of different fields. In the future, we can foresee that the application of composite flame retardants such as DICY and DICY/PiPP will become more and more popular, and bring more high-quality flame retardant materials.