Flame resistant compositions for additive manufacturing and associated printed 3D articles comprising intumescent additives
Assignee3D Systems, Inc.
InventorMeisam Shir Mohammadi
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Abstract
Compositions for additive manufacturing applications are described herein which, in some embodiments, impart flame resistant and/or flame retardant properties to articles printed or formed from the compositions. The compositions may also impart desirable mechanical properties to the articles. In some embodiments, a composition comprises a sinterable powder or a thermoplastic polymer in an amount of 10-99 wt. %, based on the total weight of the composition, and an intumescent additive in an amount of up to 30 wt. %, based on the total weight of the composition. The intumescent additive comprises a phosphinate component and at least one of (a) a heptazine or melamine-derived component, and (b) a proton donor component.
Claims19
A composition for additive manufacturing comprising:
- a sinterable powder in an amount of 10-99 wt. %, based on the total weight of the composition;
- and
- an intumescent additive in an amount of up to 30 wt. %, based on the total weight of the composition,
- wherein the intumescent additive comprises a phosphinate component and at least one of (a) a heptazine or melamine-derived component, and (b) a proton donor component that differs from the phosphinate component or heptazine or melamine-derived component, and
- wherein the heptazine or melamine-derived component comprises g-C3N4.
Dependencies are inferred from the claim text.