New flame retardant products for the automotive market need to function as efficient and cost-effective combustion modifiers; they must also show limited potential for migration out of foam at elevated temperatures.
The move to flatter windscreens has resulted in temperatures above 100° C being measured in the interior of cars.
High temperatures lead to the evaporation of volatile organic compounds (VOC)s used in the interior components of cars. These VOC’s subsequently condense on windows, where they cause fogging, and on other interior surfaces where they may feel waxy.
Recognising this issue, car makers have instituted strict volatility requirements to limit the types of ingredients that can be used in interior components.
For example, flame retardants with good fogging properties, such as photometric reflectance (>90%) are highly desirable.
As with any flame retardant development project, many performance characteristics need to be taken into account. These additional performance criteria may have little to do with how well a flame retardant works in a given substrate. The work we are presenting here outlines several new ICL products that have attractive HSE profiles and excellent VOC characteristics in automotive flexible foam formulations and work well as flame retardants in these systems.
MVSS 302 evaluations
We produced a number of laboratory foams using developmental products Fyrol PNX, Fyrol A710, Fyrol HF-9 and Fyrol HF-10. These were…