Preparation and Properties of B4C Ceramic Tapes by Aqueous Tape-Casting
Preparation and Properties of B4C Ceramic Tapes by Aqueous Tape-Casting
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DOI：
10.4028/www.scientific.net/msf.848.279
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发表时间：
2016-03
期刊：
影响因子：
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通讯作者：
W. Liu;Min Wu;Z. Shi;Z. Xu;J. P. Ruan
中科院分区：
文献类型：
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作者：
W. Liu;Min Wu;Z. Shi;Z. Xu;J. P. Ruan
以B4 C粉末为原料，去离子水为溶剂，聚乙烯亚胺（PEI）为分散剂，聚乙二醇（PEG）为增塑剂，聚乙烯醇（PVA）或明胶为粘结剂，采用水基流延法制备B4 C陶瓷带。研究了pH值、分散剂用量、粘结剂种类及用量对浆料稳定性和流变性能的影响。实验结果表明，当pH值在3-4范围内时，当PEI含量为0.8wt%，PVA含量为4.0wt%，明胶含量为6.5wt%时，可制得稳定性好、流变性好的浆料。PVA作为粘结剂，流延胶带具有一定的强度，明胶作为粘结剂，流延胶带强度较差。
B4C ceramic tapes were prepared by aqueous tape-casting with boron carbide powders as starting material, deionized water as solvent, polymine (PEI) as dispersant, polyethylene glycol (PEG) as plasticizer, poval (PVA) or gelatin as binders. The influences of pH, dispersant content, kind and content of binder on the stability and rheological property of tape slurries were studied. The experimental results indicated that, when the pH was ranged in 3-4, the slurries with good stability and good rheology could be obtained with 0.8 wt% PEI, 4.0 wt% PVA or 6.5 wt% gelatin. PVA as binder made cast tape with certain strength, and gelatin as binder made cast tape with poor strength.