Rheological behavior of aqueous polymer-plasticized γ-LiAlO2 pastes for plastic forming

Rheological behavior of aqueous polymer-plasticized γ-LiAlO2 pastes for plastic forming
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用于塑料成型的水性聚合物塑化 γ-LiAlO2 浆料的流变行为

DOI:
10.1016/j.ceramint.2009.01.001
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发表时间:
2009-08
影响因子:
5.2
通讯作者:
--
中科院分区:
材料科学1区
文献类型:
--
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研究了甲基纤维素(MC)增塑高固相含量γ-LiAlO 2浆料的流变性能。采用幂律模型表征了浆体体系的扭矩-剪切速率关系。结果表明,γ-LiAlO 2水溶液浆料的热稳定性符合幂律模型。在剪切过程中,该体系表现出触变性,主要是由于粒子-聚合物和聚合物-聚合物之间的键断裂所致。流变学研究表明,组分含量的变化对γ-LiAlO 2浆体的触变现象和塑性变形行为有较大影响。温度的升高引起MC凝胶化,导致扭矩值上升。
The rheological properties of aqueous methylcellulose (MC) plasticized γ-LiAlO2pastes with high solid loading were investigated. A power-law model was applied to characterize torque–shear rate relation of the paste system. The results demonstrated that the power-law model fits well for the aqueous γ-LiAlO2paste. Thixotropy behavior of the paste was found during shearing, mainly due to linkage break of particle–polymer and polymer–polymer. The rheological study showed that the change of components content has large influence on the thixotropy phenomena and plastic deformation behavior of γ-LiAlO2pastes. And the rise of temperature caused gelation of MC, leading to the climb of torque value.
DOI: 10.1023/a:1014392111303
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