Material for processing in selective laser sintering method
Various embodiments of the teachings herein include a compound for use in the SLS process comprising: a semicrystalline plastic selected from the group consisting of: polyaryletherketones -PAEK-, polyetherketoneketone -PEKK-, polyetherketone -PEK-, polyetheretherketone -PEEK-; and an amorphous plastic selected from the group consisting of: polyetherimide -PEI-, polyethersulfone -PES-, polyphenylenesulfone -PPSU-, and polysulfone -PSU-. Both the semicrystalline plastic and the amorphous plastic be present as a mixture in the compound.
1. A compounded material for use in a selective laser sintering (SLS) process, the compounded material comprising:
a semicrystalline plastic comprising a polyaryletherketone (-PAEK-); and
an amorphous plastic selected from the group consisting of: polyetherimide (-PEI-), polyethersulfone (-PES-), polyphenylenesulfone (-PPSU-), and polysulfone (-PSU-);
wherein the semicrystalline plastic outweighs the amorphous plastic before the semicrystalline plastic and the amorphous plastic are pulverized together to form the compounded material;
wherein compounded material has a higher glass transition temperature than the semicrystalline plastic alone; and
wherein the compounded material has either no hot crystallization temperature or a hot crystallization temperature equal to or greater than a respective hot crystallization temperature of the semicrystalline plastic and of the amorphous plastic.
2. The compound as claimed in claim 1 , wherein the compound has an amorphous morphology prior to pulverization.
3. The compounded material as claimed in claim 1 , wherein the compound has an amorphous and/or semicrystalline morphology after pulverization.
4. The compound as claimed in claim 1 , wherein a morphology of the compound is alterable from amorphous to semicrystalline by defined exposure to temperature and time.
5. The compounded material as claimed in claim 1 , wherein the compound comprises more than 50% by weight semicrystalline polyaryletherketone.
6. The compounded material as claimed in claim 1 , wherein the compound comprises a powder suitable for processing by SLS methods.
7. The compounded material as claimed in claim 1 , wherein the compound comprises a powder with particles in grain sizes below 100 μm.
8. The compounded material as claimed in claim 1 , wherein the compound includes powder with rounded particles.
9. The compounded material as claimed in claim 1 , wherein a density of the semicrystalline and/or the amorphous plastic is in the range between 1 g/cm 3 and 2 g/cm 3 .
10. A flame-retardant shaped body formed by processing a powder, the powder comprising:
a semicrystalline plastic selected from the group consisting of: polyaryletherketone (-PAEK-), polyetherketoneketone (-PEKK-), and polyetheretherketone (-PEEK-); and
an amorphous plastic selected from the group consisting of: polyetherimide (-PEI-), polyethersulfone (-PES-), polyphenylenesulfone (-PPSU-), and polysulfone (-PSU-);
wherein the semicrystalline plastic outweighs the amorphous plastic before the semicrystalline plastic and the amorphous plastic are pulverized together to form the compounded material; wherein compounded material has a higher glass transition temperature than the semicrystalline plastic alone; and wherein the compounded material has either no hot crystallization temperature or a hot crystallization temperature equal to or greater than a respective hot crystallization temperature of the semicrystalline plastic and of the amorphous plastic.
11. The shaped body as claimed in claim 10 , wherein the shaped body comprises part of an interior trim or outer cladding of a vehicle, ship, and/or aircraft.
12. The shaped body as claimed in claim 10 , wherein the shaped body comprises part of a building, any product, and/or a housing.