Fr composite composition for light-based additive manufacturing

A fire retardant (FR) composite composition, comprising:

• from about 15.0 weight % to about 99.9 weight % of a liquid polymer, based on a total weight of the FR composite composition,
• wherein the liquid polymer comprises:
• from about 10.0 weight % to about 90.0 weight % of a photopolymer comprising at least two of a first molecule, a second molecule, and a third molecule, based on a total weight of the liquid polymer,
• from about 15.0 weight % to about 80.0 weight % of a FR thermoset, based on the total weight of the liquid polymer, and
• from about 0.001 weight % to about 10 weight % of a photoinitiator, based on the total weight of the liquid polymer, and
• wherein the first molecule comprises one or more unsaturated carbon-carbon double bonds or triple bonds,
• wherein the second molecule comprises a terminal thiol group, and
• wherein the third molecule comprises one or more functional groups selected from the group consisting of an aliphatic ether, a cyclic ether, a vinyl ether, an epoxy, a cyclo aliphatic epoxy, an oxetane, an isocyanate, and a diisocyanate group.