abstract |
Wherein the phosphorus (P) content is in the range of 2,000 to 25,000 ppm based on phosphorus (P), the expansion ratio is 2 to 60 times, the flame retardancy is NF P 92-503, NF P 92-504 and NF P 92-505 , Which is excellent in flame retardancy and does not emit toxic gas during fire or disposal by using a phosphorus-based flame retardant. |