Please find answer to our frequently asked questions below. If you can’t find the answers you’re looking for then please contact us and we’ll be happy to help.
What resins can I use Phyrolex in?
|Thermosets||HMED||MDD||PCP||PCP based coatings|
|Thermoplastics||HMED||MDD||PCP||PCP based coatings|
Latex (not PU)
* = Based on viscosity of typical injection moulding grades.
Table Icons Key:
= Works well with good supporting data.
= Known to work but some PD or customer work will be required.
= Theoretically should work but will need evaluating.
= No data to make a judgement.
= Cannot work.
How much Phyrolex should I use?
This is very much dependant on what fire test your looking to pass. Upon requesting a sample we would advise you on what we would recommend as a suitable loading. However if we take polyester resins as an example. If you want to achieve a Euroclass B on the EN13823 SBi test (one the harder building tests) using an orthopthalic resin with a high styrene content of about 40% then you may need as much as 25% Phyrolex HMED (on resin weight) to achieve this result. However if your using a Low styrene DCPD resin then you should only need to use 10% Phyrolex HMED.
If we take epoxy as another example where there is a very high level of non combustible material in the form of glass or carbon you should require a loading of 15-20% of resin weight depending on the resin and fire test conditions.
Why use Phyrolex?
The table below gives a good summary of the advantages of Phyrolex. On top of this it is halogen free and outside of REACH restrictions.
|Melaminepoly phosphate||Antinomy Trioxide||Ammonium polyphosphate||Aluminium Trihydrate||Phyrolex|
|SG||3.25||1.7||5.2||1.9||2.42||1.2 - 1.4|
|290||325||Not relevant||280||290||190 - 225|
|Char former||No||Depends on resin||No||Depends on resin||No||Yes|
|Typical loading||15%||30%||1 - 5%||30%||40%||15 - 25%|
|Smoke emission||High||Moderate||See brominated||Moderate||Low *||Low|
Is it UV stable?
When incorporated into a resin system it is UV stable. All Phyrolex coatings are UV stable
Is it moisture sensitive?
The base powder is slightly moisture sensitive but if its stored correctly this doesn’t present a problem. When incorporated into a resin it is not moisture sensitive. All Phyrolex coatings are moisture stable for internal applications. For external applications we can provide suitable topcoats.