Fire Specification For Allyl Diglycol Carbonate
SEM supply cast filters from allyl diglycol carbonate ( ADC monomer ). The following information details the burning characteristics of the cast polymer. These details have been obtained from a variety of sources, including the manufacturer of the monomer, but no certification is available for these results. All details are given for information purposes only and if certification is required an independent test will need to be carried out.
UL Fire Rating
Polymer cast from ADC has been tested in America and has passed UL94 HB at 1 mm and 1.5 mm thickness. This test requires a flame spread of less than 75 mm / minute for less than 3 mm thick, or less than 40 mm / minute for greater than 3 mm. Other flame spread tests back up this result.
For 1.3 – 2.9 mm thick – to ASTM D 635 – < 25 mm
For 4 mm thick – result from monomer manufacturer – 25 mm
Limiting Oxygen Index
Any oxygen index below 21 % means that the material will burn in air. This polymer has an index of 18.3 %. This is slightly better than acrylic at about 17 % but worse than polycarbonate at 25 %.
Self Ignition Temperature
Self-ignition temperature is 720 º F according to ASTM D 1929.
Products of Burning
If the polymer is 100 % burned, the products are CO2 and H2O. The products of incomplete combustion will also include some CO, propene and some soot with phenolic end groups on the surface. (OH attached to aromatic ring ). Toxic substances are not expected.
Unlike some other optical plastics on fire, this polymer does not drip burning material.
SEM will supply samples to any customer wishing to carry out independent testing.