Method for tuning thermal expansion properties in an additive manufacturing feedstock material

1. A feedstock material for use in an additive manufacturing apparatus, the feedstock material comprising:

a first material, wherein a coefficient of thermal expansion for the first material is positive; and

a metal organic framework (MOF), wherein the MOF comprises a plurality of nodes and a plurality of linkers, the plurality of nodes coupled to the plurality of linkers, thereby forming a framework;

wherein a ratio of the first material to the MOF by weight ranges from 0.5:0.5 to 0.995:0.005;

wherein the feedstock material is a composite material;

wherein, the coefficient of thermal expansion for the MOF is 10% to 25% lower than the coefficient of thermal expansion for the first material.

2. The feedstock material of claim 1 , wherein the first material is selected from the group consisting of: acrylonitrile butadiene styrene, polylactic acid, polyvinyl alcohol, polycarbonate, and combinations thereof.

3. The feedstock material of claim 1 , wherein each node in the plurality of nodes comprises an atom selected from the group consisting of: aluminum, magnesium, manganese, silver, cadmium, lanthanum, nickel, zinc, chromium, indium, gallium, copper, iron, molybdenum, cobalt, ruthenium, hafnium, and zirconium.

4. The feedstock material of claim 1 , wherein the plurality of linkers includes one or more linkers selected from the group consisting of: H 3 BTC, H 3 TATB, H 3 HTB, H 3 TTCA, H 3 BTB, H 3 TATAB, H 3 BTE, H 6 TDPAT, H 6 TPBTM, H 3 BBC, H 6 BTEI, H 6 BTPI, H 6 PTEI, H 6 BHEI, H 5 NTEI, H 6 BTTI, H 6 BTETCA, adipic acid, H 6 TTEI, H 6 BNETPI, TIPA, H 6 BHEPI, H 2 TPDC, H 4 TpCPP-H 2 , H 4 ADIP, H 4 TTFTB, H 3 BTP, H 3 BTTri, H 3 BTT, BPD, BPDC, Py-XP, Por-PP, Py-PTP, Por-PTP, 2-5-dimethylterephtalic acid, 9,10-anthracenedicarboxylic acid, 2,3,5,6 tetramethylterephthalic acid, 1,4-napthalenedicarboxylic acid, biphenyl-4,4′-dicarboxylate, p-terphenyl-4,4″-dicarboxylic acid, triethylenediamine, 1,4-benzenedicarboxylate, and combinations thereof.

5. The feedstock material of claim 1 , wherein a ratio of the first material to the MOF by weight ranges from 0.6:0.4 to 0.99:0.01.

6. The feedstock material of claim 1 , wherein the coefficient of thermal expansion for the feedstock material is 0.1 to 200 ppm K −1 less than the coefficient of expansion of the first material.

7. The feedstock material of claim 1 , wherein the MOF has a guest molecule or atom incorporated into the framework, the guest molecule or atom selected from the group consisting of: CO 2 , N 2 , Ar, He, Ne, Kr, H 2 O, O 2 and Xe.

8. The feedstock material of claim 1 , wherein a coefficient of thermal expansion for the MOF ranges from −50 to 50 ppm K −1 .

9. A method of manufacturing comprising:

selecting a first material, wherein the first material has a positive coefficient of thermal expansion; and

selecting a metal organic framework (MOF), wherein the MOF comprises a plurality of nodes and a plurality of linkers, the plurality of nodes coupled to the plurality of linkers, thereby forming a framework, wherein a coefficient of thermal expansion for the MOF is less than the positive coefficient of thermal expansion of the first material;

combining the first material and the MOF to form a feedstock material; and

forming a three-dimensional object through use of the feedstock material;

wherein a ratio of the first material to the MOF by weight ranges from 0.5:0.5 to 0.995:0.005;

wherein the feedstock material is a composite material;

wherein, the coefficient of thermal expansion for the MOF is 10% to 25% lower than the coefficient of thermal expansion for the first material.

10. The method of claim 9 , wherein the feedstock material has a coefficient of thermal expansion ranging from 0.1 to 200 ppm K −1 less than the coefficient of thermal expansion of the first material.

11. The method of claim 9 , wherein forming the three-dimensional object through use of the feedstock material is performed layer-by-layer.