Details
| Original language | English |
|---|---|
| Pages (from-to) | 46-57 |
| Number of pages | 12 |
| Journal | Rubber chemistry and technology |
| Volume | 95 |
| Issue number | 1 |
| Publication status | Published - Jan 2022 |
Abstract
Additive manufacturing of thermoplastics or metals is a well-approved sustainable process for obtaining rapidly precise and individual technical components. Except for crosslinked silicone rubber or thermoplastic elastomers, there is no method of additive manufacturing of elastomers. Based on the development of the additive manufacturing of elastomers (AME) process, the material group of rubber-based cured elastomers may gain first access to the process field of threedimensional (3D) printing. Printing and crosslinking of rubber is separated into two steps. In the first step, printing is realized by extrusion of the rubber by using a twin-screw extruder, which works according to the derived fused-filament-fabrication principle. In the second step, the component is vulcanized in a high-pressure hot-air autoclave. Because of the plastic flow behavior of non-crosslinked rubber materials, a thermoplastic shell is probably needed to maintain the geometry and position of the additively manufactured rubber. In this way, one layer of thermoplastic and one layer of rubber are printed alternatingly until the component is finished. Afterward, the manufactured binary component is placed in an autoclave to obtain the elastomer after vulcanization under a hot-air and high-pressure atmosphere. Then, the thermoplastic shell is removed from the elastomer and can subsequently be recycled. As compared with conventional thermoplastics, the high viscosity of rubber during processing and its instable shape after extrusion are challenging factors in the development of the AME. This contribution will show a modified3Dprinter; explain the printing process from the designed component, via shell generation, to the vulcanized component; and show first printed components.
ASJC Scopus subject areas
- Materials Science(all)
- Polymers and Plastics
- Materials Science(all)
- Materials Chemistry
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In: Rubber chemistry and technology, Vol. 95, No. 1, 01.2022, p. 46-57.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - ADDITIVE MANUFACTURING AND VULCANIZATION OF CARBON BLACK-FILLED NATURAL RUBBER-BASED COMPONENTS
AU - Leineweber, Sebastian
AU - Sundermann, Lion
AU - Bindszus, Lars
AU - Overmeyer, Ludger
AU - Klie, Benjamin
AU - Wittek, Heike
AU - Giese, Ulrich
N1 - Funding Information: The authors thank the German Federation of Industrial Research Associations Otto von Guericke e.V. (AiF) and its member association Deutsche Kautschuk Gesellschaft e.V. (DKG) for financial support provided for work on IGF project 20527 N, funded by the Federal Ministry for
PY - 2022/1
Y1 - 2022/1
N2 - Additive manufacturing of thermoplastics or metals is a well-approved sustainable process for obtaining rapidly precise and individual technical components. Except for crosslinked silicone rubber or thermoplastic elastomers, there is no method of additive manufacturing of elastomers. Based on the development of the additive manufacturing of elastomers (AME) process, the material group of rubber-based cured elastomers may gain first access to the process field of threedimensional (3D) printing. Printing and crosslinking of rubber is separated into two steps. In the first step, printing is realized by extrusion of the rubber by using a twin-screw extruder, which works according to the derived fused-filament-fabrication principle. In the second step, the component is vulcanized in a high-pressure hot-air autoclave. Because of the plastic flow behavior of non-crosslinked rubber materials, a thermoplastic shell is probably needed to maintain the geometry and position of the additively manufactured rubber. In this way, one layer of thermoplastic and one layer of rubber are printed alternatingly until the component is finished. Afterward, the manufactured binary component is placed in an autoclave to obtain the elastomer after vulcanization under a hot-air and high-pressure atmosphere. Then, the thermoplastic shell is removed from the elastomer and can subsequently be recycled. As compared with conventional thermoplastics, the high viscosity of rubber during processing and its instable shape after extrusion are challenging factors in the development of the AME. This contribution will show a modified3Dprinter; explain the printing process from the designed component, via shell generation, to the vulcanized component; and show first printed components.
AB - Additive manufacturing of thermoplastics or metals is a well-approved sustainable process for obtaining rapidly precise and individual technical components. Except for crosslinked silicone rubber or thermoplastic elastomers, there is no method of additive manufacturing of elastomers. Based on the development of the additive manufacturing of elastomers (AME) process, the material group of rubber-based cured elastomers may gain first access to the process field of threedimensional (3D) printing. Printing and crosslinking of rubber is separated into two steps. In the first step, printing is realized by extrusion of the rubber by using a twin-screw extruder, which works according to the derived fused-filament-fabrication principle. In the second step, the component is vulcanized in a high-pressure hot-air autoclave. Because of the plastic flow behavior of non-crosslinked rubber materials, a thermoplastic shell is probably needed to maintain the geometry and position of the additively manufactured rubber. In this way, one layer of thermoplastic and one layer of rubber are printed alternatingly until the component is finished. Afterward, the manufactured binary component is placed in an autoclave to obtain the elastomer after vulcanization under a hot-air and high-pressure atmosphere. Then, the thermoplastic shell is removed from the elastomer and can subsequently be recycled. As compared with conventional thermoplastics, the high viscosity of rubber during processing and its instable shape after extrusion are challenging factors in the development of the AME. This contribution will show a modified3Dprinter; explain the printing process from the designed component, via shell generation, to the vulcanized component; and show first printed components.
UR - http://www.scopus.com/inward/record.url?scp=85129305527&partnerID=8YFLogxK
U2 - 10.5254/rct.21.79906
DO - 10.5254/rct.21.79906
M3 - Article
AN - SCOPUS:85129305527
VL - 95
SP - 46
EP - 57
JO - Rubber chemistry and technology
JF - Rubber chemistry and technology
SN - 0035-9475
IS - 1
ER -