CN108947528A - 一种氧化钇稳定氧化锆陶瓷微球的制备方法 - Google Patents
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Abstract
本发明公开了一种氧化钇稳定氧化锆陶瓷微球的制备方法,将聚乙烯醇溶液、柠檬酸铵、去离子水、无水乙醇、氧化钇稳定氧化锆粉依次加入烧杯内,经磁力搅拌器搅拌及超声分散均匀后,将混合好的浆料加入到针管中,滴加至硅油中完成成型过程,最后通过洗涤、干燥、烧结得到氧化钇稳定氧化锆陶瓷微球。本发明方法制备的氧化钇稳定氧化锆陶瓷微球的固相含量高,设备及工艺简单,且制备过程中不发生化学反应,为氧化钇稳定氧化锆微球的大规模制备提供了一种绿色,环境友好的方法。
Description
技术领域
本发明涉及一种氧化钇稳定氧化锆陶瓷微球的制备方法。
背景技术
氧化锆(ZrO2)微球由于具有高强度、高韧性、高密度、高硬度、优良的耐磨性、高化学稳定性和特别适合碱性样品的分离等特点使它在研磨介质、生物化学、医药工业等领域表现出广泛的应用前景。
自20世纪90年代初,由美国橡树岭国家实验室提出的凝胶注模(Gel-casting)成型工艺以来,研究者已开发出了多种ZrO2微球的制造工艺,如ZrO2超细粉经喷雾造粒、等静压成型、高温烧结和溶胶-凝胶法等。但这些工艺均涉及到化学反应,且对反应的完全性要求较高,因而制造成本较高。
发明内容
本发明旨在提供一种氧化钇稳定氧化锆陶瓷微球的制备方法,本方法的工艺过程稳定且不发生化学反应,可以低成本大批量制备微球,而且制备的氧化钇稳定氧化锆微球的球形度较好、固相含量较高,显著提高了球体的性能。
本发明氧化钇稳定氧化锆陶瓷微球的制备方法,包括如下步骤:
步骤1:将固体聚乙烯醇溶于去离子水中,配制获得聚乙烯醇溶液,备用;
步骤2:室温下,将聚乙烯醇溶液、柠檬酸铵、无水乙醇依次加入到烧杯中,超声分散均匀;
步骤3:将氧化钇稳定氧化锆粉加入步骤2获得的混合溶液中,室温下搅拌均匀,然后将所得浆料转移至针管中,利用空气压缩机提供压力,通过点胶机控制挤出压力,将针管内的浆料滴入85-95℃的硅油内完成滴球成型,最后通过洗涤、干燥、烧结得到氧化钇稳定氧化锆陶瓷微球。
步骤1中聚乙烯醇溶液的浓度为0.01-0.10g/ml。
步骤2获得的混合溶液中,无水乙醇的质量分数为1.5%-4.6%,柠檬酸铵的质量分数为0.38%,聚乙烯醇的质量分数为0.01%-0.19%。
步骤3中,氧化钇稳定氧化锆粉为3Y-ZrO2,其粒径为0.21μm。
步骤3中,所述烧结为在微波烧结炉中以20℃/min的速度升至600℃保温10min,然后以30℃/min的速度升至1350℃保温15min,最后随炉冷却至室温。
与已有技术相比,本发明有益效果体现在:
1、本发明在制备氧化钇稳定氧化锆陶瓷微球过程中,操作简单,成本较低,无化学反应,能够实现大批量生产。
2、本发明制备的氧化钇稳定氧化锆微球固相含量高、球形度好。
附图说明
图1是实施例1中氧化钇稳定氧化锆陶瓷微球的照片a和粒径分布图b。从微球照片a中可以看出微球的外表面孔洞较少且较为光滑;从粒径分布图b可以得到的粒径范围为1.22±0.06mm且球形度较高。
图2是实施例2中氧化钇稳定氧化锆陶瓷微球的照片a和粒径分布图b。从微球照片a中可以看出微球表面较为光滑;从粒径分布图b中得到随着无水乙醇量的增加,粒径会有降低且粒径范围为1.16±0.08mm。
图3是实施例3中氧化钇稳定氧化锆陶瓷微球的照片a和粒径分布图b。从微球照片a中可以看出微球表面较为光滑;从粒径分布图b中得到的粒径为1.16±0.06mm。
图4是实施例4中氧化钇稳定氧化锆陶瓷微球的照片a和粒径分布图b。从微球照片a中可以看出微球表面较为光滑;从粒径分布图b中得到的粒径为1.20±0.06mm。
图5是实施例5中氧化钇稳定氧化锆陶瓷微球的照片a和粒径分布图b。从微球照片a中可以看出微球表面较为光滑;从粒径分布图b中得到的粒径为1.18±0.08mm。
具体实施方式
实施例1:
1、将固体聚乙烯醇溶于去离子水中,配成浓度为0.05g/ml的溶液,备用;连接空气压缩机、点胶机、针管适配器和点胶针头,备用;
2、室温下将5ml去离子水、0.5ml聚乙烯醇溶液、0.1g柠檬酸铵、0.5ml无水乙醇依次加入到烧杯中,在机械超声清洗机中分散均匀。
3、随后将氧化钇稳定氧化锆粉加入到步骤2获得的混合溶液中,在室温下搅拌均匀后,将该混合液转移至针管中,利用空气压缩机提供压力,通过点胶机控制挤出压力,将针管内的浆料滴入90℃硅油内完成滴球成型;最后通过洗涤、干燥、烧结得到氧化钇稳定氧化锆陶瓷微球。产物的照片和粒径分布图见图1。
实施例2:
1、将固体聚乙烯醇溶于去离子水中,配成浓度为0.05g/ml的溶液,备用;连接空气压缩机、点胶机、针管适配器和点胶针头,备用。
2、室温下将5ml去离子水、0.5ml聚乙烯醇溶液、0.1g柠檬酸铵、1.0ml无水乙醇依次加入到烧杯中,在机械超声清洗机中分散均匀。
3、随后将氧化钇稳定氧化锆粉加入到步骤2获得的混合溶液中,在室温下搅拌均匀后,将该混合液转移至针管中,利用空气压缩机提供压力,通过点胶机控制挤出压力,将针管内的浆料滴入90℃硅油内完成滴球成型;最后通过洗涤、干燥、烧结得到氧化钇稳定氧化锆陶瓷微球。产物的照片和粒径分布图见图2。
实施例3:
1、将固体聚乙烯醇溶于去离子水中,配成浓度为0.05g/ml的溶液,备用;连接空气压缩机、点胶机、针管适配器和点胶针头,备用。
2、室温下将5ml去离子水、0.5ml聚乙烯醇溶液、0.1g柠檬酸铵、1.5ml无水乙醇依次加入到烧杯中,在机械超声清洗机中分散均匀。
3、随后将氧化钇稳定氧化锆粉加入到步骤2获得的混合溶液中,在室温下搅拌均匀后,将该混合液转移至针管中,利用空气压缩机提供压力,通过点胶机控制挤出压力,将针管内的浆料滴入90℃硅油内完成滴球成型;最后通过洗涤、干燥、烧结得到氧化钇稳定氧化锆陶瓷微球。产物的照片和粒径分布图见图3。
实施例4:
1、将固体聚乙烯醇溶于去离子水中,配成浓度为0.01g/ml的溶液,备用;连接空气压缩机、点胶机、针管适配器和点胶针头,备用。
2、室温下将5ml去离子水、0.5ml聚乙烯醇溶液,0.1g柠檬酸铵、0.5ml无水乙醇依次加入到烧杯中,在机械超声清洗机中分散均匀。
3、随后将氧化钇稳定氧化锆粉加入到步骤2获得的混合溶液中,在室温下搅拌均匀后,将该混合液转移至针管中,利用空气压缩机提供压力,通过点胶机控制挤出压力,将针管内的浆料滴入90℃硅油内完成滴球成型;最后通过洗涤、干燥、烧结得到氧化钇稳定氧化锆陶瓷微球。产物的照片和粒径分布图见图4。
实施例5:
1、将固体聚乙烯醇溶于去离子水中,配成浓度为0.10g/ml的溶液,备用;连接空气压缩机、点胶机、针管适配器和点胶针头,备用。
2、室温下将5ml去离子水、0.5ml聚乙烯醇溶液、0.1g柠檬酸铵,0.5ml无水乙醇依次加入到烧杯中,在机械超声清洗机中分散均匀。
3、随后将氧化钇稳定氧化锆粉加入到步骤2获得的混合溶液中,在室温下搅拌均匀后,将该混合液转移至针管中,利用空气压缩机提供压力,通过点胶机控制挤出压力,将针管内的浆料滴入90℃硅油内完成滴球成型;最后通过洗涤、干燥、烧结得到氧化钇稳定氧化锆陶瓷微球。产物的照片和粒径分布图见图5。
Claims (6)
1.一种氧化钇稳定氧化锆陶瓷微球的制备方法,其特征在于包括如下步骤:
步骤1:将固体聚乙烯醇溶于去离子水中,配制获得聚乙烯醇溶液,备用;
步骤2:室温下,将聚乙烯醇溶液、柠檬酸铵、无水乙醇依次加入到烧杯中,超声分散均匀;
步骤3:将氧化钇稳定氧化锆粉加入步骤2获得的混合溶液中,室温下搅拌均匀,然后将所得浆料转移至针管中,利用空气压缩机提供压力,通过点胶机控制挤出压力,将针管内的浆料滴入硅油内完成滴球成型,最后通过洗涤、干燥、烧结得到氧化钇稳定氧化锆陶瓷微球。
2.根据权利要求1所述的制备方法,其特征在于:
步骤1中聚乙烯醇溶液的浓度为0.01-0.10g/ml。
3.根据权利要求1所述的制备方法,其特征在于:
步骤2获得的混合溶液中,无水乙醇的质量分数为1.5%-4.6%,柠檬酸铵的质量分数为0.38%,聚乙烯醇的质量分数为0.01%-0.19%。
4.根据权利要求1所述的制备方法,其特征在于:
步骤3中,氧化钇稳定氧化锆粉为3Y-ZrO2,其粒径为0.21μm。
5.根据权利要求1所述的制备方法,其特征在于:
步骤3中,硅油的温度控制在85-95℃。
6.根据权利要求1所述的制备方法,其特征在于:
步骤3中,所述烧结为在微波烧结炉中以20℃/min的速度升至600℃保温10min,然后以30℃/min的速度升至1350℃保温15min,最后随炉冷却至室温。
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