| abstract |
The invention discloses a flame-retardant XPE sheet and a preparation method thereof. The flame-retardant XPE sheet comprises HDPE particles, LLDPE particles, EPDM, LDPE particles, antistatic agent, composite flame retardant, foaming agent, cross-linking agent The preparation method of flame retardant XPE sheet includes the following steps, S1: granulating HDPE, LLDPE and LDPE through twin-screw to prepare high temperature resistant masterbatch, and by adding The foaming agent produces the expanded particles A in the granulator; the EPDM rubber and the BIPB crosslinking agent are mixed, and the crosslinked particles B are produced by the granulator. In the present invention, the triazine flame retardant containing Aus and nitrogen is added. In the flame-retardant system, the Sb/Br ratio is beneficial to improve the flame retardancy of XPE. Nitrogen and bromine show a synergistic flame-retardant effect without affecting the film. Under the basic properties of the material, the flame retardant effect is greatly improved. |