Journal
POLYMER DEGRADATION AND STABILITY
Volume 95, Issue 6, Pages 945-954Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2010.03.028
Keywords
Halogen-free flame retardant; Polyoxymethylene; Aluminium hydroxide; Synergistic effect
Categories
Funding
- National High Technology Research and Development Program of China [2007AA03Z540]
Ask authors/readers for more resources
Polyoxymethylene (POM), having the lowest limiting oxygen index (LOI) (only similar to 15%), is well known as the most difficult to be flame retarded plastic among all the polymers. In this paper, a novel synergistic flame retardant system composed of aluminium hydroxide (ATH), melamine (ME) and novolac resin was designed and successfully applied to flame retard POM. ATH took effects through heat absorption and water release. Both ME and novolac could react with the decomposition product of POM, formaldehyde, thus improving the flame retardancy. Particularly, novolac resin and ME played the roles of macromolecular charring agent and gas source, enhancing the flame retarding actions in the condensed and gaseous phases, respectively. This ternary synergistic system exhibited fine flame retardancy for POM (UL94 V-1 rating for 1.6 mm bar), and the obtained flame retardant POM also showed good processability and mechanical properties due to the lubrication, compatibilization and aid-dispersion effects of novolac resin. (C) 2010 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available