US 11,958,956 B1Granted

Additive-polymer composite materials and methods of fabricating the same

AssigneeThe Florida International University Board of Trustees

InventorsDaniela Rodica Radu, Cheng-Yu Lai, Melissa Venedicto, Faizan Syed, Dakota Aaron Thomas, Samuel Oyon

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Abstract

Additive-polymer precursor materials for filaments (e.g., for three-dimensional (3D) printing) are provided, as well as methods of fabricating and using the same. One or more two-dimensional (2D) additive materials (e.g., nano materials, such as nanosheets) can be mixed with a polymer base to give an additive-polymer precursor composite material. The additive material can be dissolved in a first solvent to give an additive solution, and the polymer can be dissolved in a second solvent to give a polymer base. The additive solution can be mixed with the polymer base to give a mixed solution. Solvent casting can then be performed on the mixed solution to evaporate the solvent(s) and give the additive-polymer precursor composite material, which can have a layered structure.

Claims15

Dependent claims

A method of fabricating an additive-polymer composite material, the method comprising:

dispersing an additive material in a first solvent to obtain an additive homogeneous dispersion, the additive material being a two-dimensional (2D) material;
dissolving a polymer in a second solvent to obtain a polymer base;
mixing the additive homogeneous dispersion with the polymer base to obtain a mixed solution;
performing solvent casting of the mixed solution to evaporate any solvent and obtain the additive-polymer composite material,
the additive material being a transition metal dichalcogenide (TMD) with a formula of MX2, where M is a transition metal atom and X is a chalcogen atom, and
the mixing of the additive homogeneous dispersion with the polymer base comprising adding the additive homogeneous dispersion and the polymer base to an airtight container and rotating the airtight container in a centrifuge at a rate in a range of from 10 revolutions per minute (rpm) to 50 rpm for at least one hour.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/356,673Filed 21 Jul 2023
Granted: 16 Apr 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

C08K 3/11
Metal compounds: compounds containing metals of Groups 4 to 10 or of Groups 14 to 16 of the Periodic Table
B29C 48/022
Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor:…
B29C 48/14
Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor:…
C08K 3/30
Use of inorganic substances as compounding ingredients: sulfur-, selenium- or tellurium-containing compounds