Title: Three-dimensional porous siloxanes using leachable porogen particles

Abstract

According to one embodiment, a silicone-based ink for additive manufacturing includes a vinyl-terminated diphenyl siloxane macromer, a treated silica hydrophobic reinforcing filler, a rheology modifying additive, and a plurality of porogen particles. According to another embodiment, a product of additive manufacturing with a silicone-based ink includes a plurality of continuous filaments comprised of a siloxane matrix, where the continuous filaments are arranged in a geometric pattern, a plurality of inter-filament pores defined by the geometric pattern of the continuous filaments, and a plurality of intra-filament pores having an average diameter in a range of greater than 1 micron to less than 50 microns.

Inventors:

Perez, Lemuel Perez; Duoss, Eric B.; Lenhardt, Jeremy; Wilson, Thomas S.

Issue Date:

2021-11-23

Research Org.:

Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1860089

Patent Number(s):

11180670

Application Number:

16/368,725

Assignee:

Lawrence Livermore National Security, LLC (Livermore, CA)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

B - PERFORMING OPERATIONS B33 - ADDITIVE MANUFACTURING TECHNOLOGY B33Y - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING

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B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

B29C64/118 - using filamentary material being melted, e.g. fused deposition modelling [FDM]

B - PERFORMING OPERATIONS B33 - ADDITIVE MANUFACTURING TECHNOLOGY B33Y - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING

B33Y10/00 - Processes of additive manufacturing
B33Y30/00 - Apparatus for additive manufacturing
B33Y70/10 - Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

C08G77/12 - containing silicon bound to hydrogen {
C08G77/20 - containing silicon bound to unsaturated aliphatic groups {

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP

C08J2201/026 - Crosslinking before of after foaming
C08J2201/03 - Extrusion of the foamable blend
C08J2201/042 - Elimination of an organic solid phase
C08J2201/0422 - containing oxygen atoms, e.g. saccharose
C08J2383/07 - containing silicon bound to unsaturated aliphatic groups
C08J2471/02 - Polyalkylene oxides
C08J9/0066 - {Use of inorganic compounding ingredients}
C08J9/009 - {Use of pretreated compounding ingredients}
C08J9/26 - by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients

C08K2201/003 - Additives being defined by their diameter
C08K2201/006 - Additives being defined by their surface area
C08K3/013 - Fillers, pigments or reinforcing additives
C08K3/36 - Silica
C08K5/21 - Urea
C08K5/56 - Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
C08K7/22 - Expanded, porous or hollow particles
C08K9/06 - with silicon-containing compounds

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS

C08L71/02 - Polyalkylene oxides
C08L83/00 - Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only

C - CHEMISTRY C09 - DYES C09D - COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS

C09D11/101 - Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
C09D11/102 - containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
C09D11/14 - based on carbohydrates
C09D11/16 - Writing inks
C09D11/38 - characterised by non-macromolecular additives other than solvents, pigments or dyes
C09D183/04 - Polysiloxanes

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DOE Contract Number:  

AC52-07NA27344

Resource Type:

Patent

Resource Relation:

Patent File Date: 03/28/2019

Country of Publication:

United States

Language:

English