07 August 2009
07 August 2009
A new 25% glass fibre-reinforced polyamide 6 compound has been launched by Chem Polymer, to provide injection moulders with an alternative to halogenated flame retardant (FR) formulations.
Chemlon 225 GVNH has a UL 94 flammability listing of V0 at thicknesses down to 0.8 mm. Chem Polymer say that its comparative tracking index of 600 V is more than double that of a comparable compound with a halogenated (typically brominated) FR formulation, providing electrical performance in automotive, residential, and appliance applications such as housings with snap-fit assembly, circuit breakers, charger covers, and safety switches. The new compound is also 14% less dense, yielding lighter parts.
Although the Chemlon product is currently UL-recognized only in black formulations, its FR formulation is expected to provide a broader range of colourability than brominated FR systems and non-halogenated ones based on red phosphorus, according to Richard Barnes, Technical Manager. Typically these permit only dark colours.
“Because non-halogenated FR systems have been more difficult to incorporate into glass-filled compounds than brominated ones, relatively few non-halogenated polyamides have been available, particularly in North America,” said Barnes. “Our new Chemlon compound will provide a higher-performance alternative for moulders seeking to serve the world market for components requiring flame retardancy.”
Chemlon 225 GVNH is already in commercial use for the housing of an air filter used in a vehicle engine compartment.
The American Composites Manufacturers Association participated in a roundtable discussion about the IMAGINE Act. Known as the Innovative Materials in American Growth and Infrastructure, Newly Expanded (IMAGINE) Act, the new bill is designed to promote the increased use of innovative materials like fibre reinforced polymer (FRP) composites, as well as new manufacturing methods to accelerate the deployment and extend the life of infrastructure projects.
After the collapse of a drinking water pipeline in downtown Amsterdam, the Netherlands, Insituform was contracted to reline a close to 100 year old pipe underneath one of the canals. Water was restored successfully within five days, with minimal impact on traffic and the environment.
Australian organisations Austrak, Laing O’Rourke and the University of Southern Queensland (USQ) have joined forces to develop polymer composite solutions for bridge transoms in a $10 million project titled Polymer Composite Transoms for Rail Bridge Deck Replacement (CompTrans).