WATER SOLUBLE NYLON BINDER COMPOSITIONS FOR ADDITIVE FABRICATION AND RELATED METHODS AND COMPOSITIONS

According to some aspects, techniques are described for fabricating sinterable metallic parts using a binder formulation that comprises a water-soluble polyamide, such as nylon. A binder comprising a water-soluble polyamide may allow a binder jetting process to produce high strength brown parts due...

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Bibliographic Details
Main Author Nick, Robert J
Format Patent
LanguageEnglish
Published 02.06.2022
Subjects
ADDITIVE MANUFACTURING TECHNOLOGY
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
CASTING
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
WORKING METALLIC POWDER
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Summary:According to some aspects, techniques are described for fabricating sinterable metallic parts using a binder formulation that comprises a water-soluble polyamide, such as nylon. A binder comprising a water-soluble polyamide may allow a binder jetting process to produce high strength brown parts due to the toughness of such binders as compared to other water soluble binders such as polyacrylic acid or polyvinyl alcohol. Water soluble polyamides may simultaneously provide higher printhead reliability due to their water retaining characteristics and avoid the use of more expensive, toxic and often flammable solvents. Additionally, polyamide binders may react at a curing temperature with the properly selected humectants such as ethylene urea or hydantoin to create a part that is insensitive to strength loss due to moisture in the cured state.
Bibliography:Application Number: US202117539854