Exolit™ OP 1420
Exolit OP 1420 is a non-halogenated flame retardant based on organic phosphinates. The product achieves its flame-retardant effect through a combined gas phase and condensed phase mode of action. The thermoplastic polymer with Exolit OP 1420 forms on exposure to flame a stable char at the surface acting as a barrier. The protective layer provides a heat-insulating effect, reduces oxygen access and prevents dripping of molten polymer. Exolit OP 1420 is a white powder.
For more details see our Innovation Spotlight video.
Product Information
- Suited for applications in hot and humid environments
- UL 94 V-0 rating down to 0.4 mm thickness
- Good colorability
- Suited for both glass-fibre-reinforced and unreinforced grades
- The flame retarded polyamide compounds exhibit very good physical and excellent electrical properties
- Low smoke toxicity
- Good contrast in laser marking
- Low material density
- Non-halogenated flame retardants with favourable environmental and health profile
|
Characteristics |
Unit |
Target Value |
DS¹) |
TD²) |
Test Method |
|
Phosphorus |
%(w/w) |
22.2 -26.0 |
☑ |
☐ |
Photometry after oxidizing dissolution; (11/17) or wavelength dispersive X-ray fluorescence spectrometry; (11/23) |
|
Water / Moisture |
%(by wt.) |
max. 0.5 |
☑ |
☐ |
Karl-Fischer titration; (11/21) |
|
Density |
g/cm³ |
approx. 1.6 |
☐ |
☑ |
at 20°C |
|
Bulk Density |
g/L |
approx. 500 |
☐ |
☑ |
|
|
Decomposition Temperature |
°C |
> 320 |
☐ |
☑ |
(DTA/TG) |
|
¹) Delivery specification: The product is monitored on a regular basis to ensure that it adheres to the specified values. Test methods: Clariant method numbers 11/xx in brackets. |
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Exolit OP 1420 was developed especially for use in polyamides. It is suited for both glass-fibre-reinforced and unreinforced grades and for PA 6, PA 66 and for high temperature polyamides. The flame retarded polyamide compounds exhibit very good physical and electrical properties.
In glass-fibre-reinforced polyamide 6 or 6.6, a dosage of about 20 % (by wt.) Exolit OP 1420 is usually sufficient to obtain the UL 94 V-0 classification for electrical components (at 1.6 as well as 0.8 mm and 0.4 mm thickness). Subject to the polymer grade, processing conditions and glass- fibre reinforcement the dosage of the flame retardant may vary.
Before incorporating Exolit OP 1420, it is important to predry the polyamide as usual. If possible, the resulting moisture content should be below 0.1 % (by wt.). Predrying of Exolit OP 1420 is not necessary. However, predrying (e.g. 4 h at 120 °C) is recommended, if even very low moisture contents must be avoided.
The mixing and processing methods customary in powder processing of polymers can be used with Exolit OP 1420. The VDI Guideline 2263 “Prevention of dust fires and dust explosions” or the relevant national regulations must be observed.
The optimum conditions for incorporating should be determined in each individual case. Care must be taken to ensure homogeneous dispersion of all components. The temperature of the polymer melt should not exceed 320 °C.
Delivery form
White powder
Packaging
Exolit OP 1420 is delivered in 20 kg paper bags with PE inliner or 500 kg big bags.
Storage
The product should be stored in a dry place at room temperature.
Minimum shelf life is 12 months from the date of shipping when stored according to the said conditions.
For more details see our Innovation Spotlight video.
