Triazinyl 22% with organo-clay 3% achieved UL 94 V-0 (1.6 mm) in SLS-printed TPU (thermoplastic polyurethane). TPU with 25% aluminium diethyl phosphonate (AlPi) was also tested (but not AlPi plus clay). The FRs were mixed with TPU powder using a high-speed mixer then...
A complex, magnetic iron – zinc compound was lab tested to adsorb copper ions then tested as an FR coating for PU foam. An iron – zinc – ammonium compound (FeO-ZIF8) was synthetised from magnetic Fe3O4 nanoparticles, zinc nitrate and 2-methylimidazole. This compound...
The bio-polymer chitosan, modified with nitrogen, was used with the PIN FR DOPO, achieving UL 94 V-0 (3.2 mm) in epoxy. Chitosan is the second most abundant bio-polymer, after cellulose, and the most abundant organic compound containing nitrogen, and can be sourced...
Chitosan reacted with phosphoric acid was tested as a liquid PIN FR for natural fibres used to reinforce vinyl ester resin. Chitosan solution, prepared using acetic acid, was phosphorus-loaded by reacting with phosphoric acid. The natural fibres (wool, mulberry silk)...
Neat PC/ABS, polymer + anti-dripping agent PTFE, polymer + PTFE + 10% loading of six different aryl phosphate PIN FRs (TPP, CDP, RDP, BTPP, BTP, Sol-DP) were tested for fire performance, smoke emission and smoke toxicity as per EN 45545-2. Neat PC/ABS emitted toxic...
