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低毒单体DMAA用于ZrO2/Al2O3坯体注凝成型

, PP. 79-84

Keywords: 低毒单体,DMAA,注凝成型,黏度,ZrO2/Al2O3坯体,抗弯强度

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Abstract:

采用低毒的单体N,N-二甲基丙烯酰胺(DMAA)制备了氧化锆增韧氧化铝(ZrO2/Al2O3)坯体。讨论了分散剂的用量、ZrO2/Al2O3浆料的pH值、粉体中ZrO2含量、粉体所占浆料的固相体积分数、球磨时间、预混液中DMAA的浓度(质量分数)对ZrO2/Al2O3浆料黏度的影响。并研究了注凝成型ZrO2/Al2O3坯体的性能和显微结构。结果表明,当浆料pH值为9,分散剂的添加量为ZrO2/Al2O3粉体质量的0.6%,球磨时间为6h,ZrO2/Al2O3浆料具有最小的黏度。固相体积分数的提高和DMAA加入量的增大都会提高ZrO2/Al2O3浆料的黏度,ZrO2的加入会降低浆料的黏度。用DMAA制备得到的ZrO2/Al2O3坯体结构均匀,抗弯强度达到25MPa。

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