Affiliation:
1. Tsinghua University
2. Capital University of Medical Sciences
Abstract
Water debinding is an important debinding technique for ceramic injection molding. However
cracks or blisters usually generate during water extraction. In this paper, two types of multi-component
binder systems were studied: (1) a major fraction of polyethylene glycol (PEG), and a minor fraction of
polyvinyl butyra (PVB) and other additives. (2) a major fraction of PEG, and a minor fraction of
polymethyl methacrylate (PMMA) and other additives. Mechanism of defects generation was
investigated, and PEGs with various molecular weights were introduced to avoid cracks or blisters during
the process. Further more, the compatibilities of PEG/PVB and PEG/PMMA were studied. The results
showed that PEG and PMMA exhibited better compatibility, with the feedstock more homogeneous and
sintered ceramic parts higher strength.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Cited by
6 articles.
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