PP/LDH Nanocomposites via Melt-Intercalation: Synergistic Flame Retardant Effects, Properties and Applications in Automobile Industries
The structure, thermal behavior and flame retardant properties of polypropylene (PP) nanocomposites treated with complex flame retardants composed of layered double hydroxides (LDH) and ammonium polyphosphate (APP)/pentaerythritol (PER) intumescent flame retardant systems have been investigated by XRD, TEM, LOI, UL-94, and TGA analysis. The results showed that introduction of LDH nanofillers into the samples can obtain good flame retardant synergistic effects with APP/PER additives at appropriate LDH loadings. Such synergism between LDH and APP/PER in PP matrix can be explained by a proposed condensed phase flame retardant mechanism. And based on this study, different types of modified PP products were developed in a ten-thousand-ton scale to be used for the automobile industries, such as car bumpers and dashboards.
Lianxiang Ma, Chuangsheng Wang and Weimin Yang
P. Ding et al., "PP/LDH Nanocomposites via Melt-Intercalation: Synergistic Flame Retardant Effects, Properties and Applications in Automobile Industries", Advanced Materials Research, Vols. 87-88, pp. 427-432, 2010