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Title: Three-dimensional printed porous silicone matrix using leachable porogen

Patent ·
OSTI ID:2222166
; ; ;

The silicone-based ink for additive manufacturing includes a siloxane macromer, and a porogen mixture comprising a water-soluble porogen and a surfactant. The product of additive manufacturing with a silicone-based ink includes a three-dimensional printed structure including a plurality of continuous filaments arranged in a predefined pattern and a plurality of inter-filament pores defined by the predefined pattern of the continuous filaments. In addition, each continuous filament of the three-dimensional printed structure includes a silicone matrix having an open cell structure with a plurality of intra-filament pores, and the intra-filament pores form continuous channels through the silicone matrix.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Number(s):
11,725,112
Application Number:
16/805,494
OSTI ID:
2222166
Resource Relation:
Patent File Date: 02/28/2020
Country of Publication:
United States
Language:
English

References (5)

Preparation of Microporous Silicone Rubber Membrane with Tunable Pore Size via Solvent Evaporation-Induced Phase Separation journal March 2013
Breast prostheses patent December 1994
3D printed cellular solid outperforms traditional stochastic foam in long-term mechanical response journal April 2016
Silicone foams stabilized by surfactants generated in situ from allyl-functionalized PEG journal January 2010
Green silicone elastomer obtained from a counterintuitively stable mixture of glycerol and PDMS journal March 2016

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