FLAME RETARDANTS | ADDITIVES
developing formulations to pilot.” Graphene is also proving to be an interesting option for improving flame retardance in thermo- plastics. Not so long ago, graphene was consid- ered a very exotic material with very high costs to go with it. However, new production technologies are bringing it closer to the mainstream.
Nano innovation Netherlands-headquartered MPI Chemie says when graphene is used in formulations already containing organic flame retardants, the improve- ment to the flame retardant properties is very promising. “An increase of the Limiting Oxygen Index (LOI) of 9 was observed at one of our customers solely through the addition of graphene. This is a statistically significant finding, but further research needs to be done,” says Sales Manager Jochem Krijnen. “Low dosing, around 1-2% of graphene, could allow for reducing the amount of other FR additives in a compound, thus reducing cost, improving mechanical properties and resulting in a more sustainable solution,” he says. “Our graphene sourcing partner, NanoXplore, is the world’s largest
producer, with a capacity of 4000t/yr, which delivers the economics of scale to allow many commercially viable and cost-effective applications.” A potential downside is that graphene isn’t suitable for light and bright coloured applications due to its anthracite colour, Krijnen says. “However, this may serve as a benefit by allowing the reduc- tion or removal of carbon black, which is a hot topic due to the CO2
footprint that inherently comes with the use of carbon black.” CO2 emis-
sions associated with graphene production are said to be 80% less than those of the same weight of carbon black. HFFR supplier Huber Advanced Materials
reports on a development project for flame retardant wire and cable compounds based on polyolefin elastomers (POEs) that it has conducted in partnership with ExxonMobil. This aimed to evaluate ExxonMobil’s POEs as a polymer carrier alternative to ethylene-vinyl acetate (EVA) in HFFR formulations.
Huber says use of POE in HFFR formulations
requires fine-tuning and higher levels of flame retardant in order to achieve the performance typical of EVA-based HFFR W&C formulations. The
IMERYS GRAPHITE & CARBON
Premium carbon based solutions for thermal management, electrical conductivity and electromagnetic shielding.
C-THERM™ C-THERM™
| C-THERM™ PLUS HD
HIGH ASPECT RATIO GRAPHITE
Low loading Formulation flexibility Improved processing
Contact us at
imerys-graphite-and-carbon.com MAX HD ENSACO® CONDUCTIVE CARBON BLACK
Low loading Easy dispersion Low moisture pick-up
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76
