CN111785410A - 一种纳米粉体复合植物绝缘油的制备方法 - Google Patents

一种纳米粉体复合植物绝缘油的制备方法 Download PDF

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CN111785410A
CN111785410A CN202010758788.8A CN202010758788A CN111785410A CN 111785410 A CN111785410 A CN 111785410A CN 202010758788 A CN202010758788 A CN 202010758788A CN 111785410 A CN111785410 A CN 111785410A
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周年荣
何潇
张林山
谭向宇
黄星
李月梅
闫永梅
杨莉
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Electric Power Research Institute of Yunnan Power Grid Co Ltd
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Abstract

本发明公开了一种纳米粉体复合植物绝缘油的制备方法，包括以下步骤：S1.对纳米粉体进行表面处理；S2.对植物绝缘油进行除水、除气处理；S3.将处理后的所述纳米粉体与植物绝缘油进行超声搅拌混合后进行真空干燥制得。本发明制备步骤简单，成本较低，利于推广和工业化生产；制备的产品含有的纳米粉体具有极高的比表面积和反应活性，可以吸收植物绝缘油老化过程中产生的活性氧，抑制植物绝缘油酯分子的氧化过程，同时，纳米粉体能够吸附植物绝缘油中的水分，从而降低酯分子的水解作用，提高植物绝缘油的抗老化作用；同时，纳米粉体会在电场作用下发生极化，在其周围形成大量陷阱，从而阻碍油中带电粒子的迁移，降低电导电流，提高击穿电压。

Description

一种纳米粉体复合植物绝缘油的制备方法
技术领域
本发明属于纳米材料领域，具体涉及一种纳米粉体复合植物绝缘油的制备方法。
背景技术
绝缘油是重要的液体绝缘介质,在变压器等电器设备中大量使用。电力变压器是电网安全运行中关键的设备之一,变压器的严重事故不但会导致自身损坏,还会中断电力供应。变压器内部绝缘介质的劣化而引起的绝缘击穿往往是引发的变压器故障的主要原因。随着输电电压等级的不断提高,油纸复合绝缘已越来越难以满足高电压等级对大容量、小型化、高可靠性绝缘系统的严格要求。而对油纸复合绝缘在电磁场、热应力作用下老化破坏特性认识的不足,以及对油纸绝缘的放电机理、介质的空间电荷效应等方面的相关理论依据的缺乏,进一步增加了变压器绝缘设计和制造的难度。因此,研究油纸复合绝缘系统老化和破坏的机理,改进和提高绝缘材料性能,开发新型高性能绝缘材料,是高可靠性高压变压器制造技术的发展方向。
发明内容
本发明的目的在于克服传统的绝缘油难以满足高电压等级对大容量、小型化、高可靠性绝缘系统的严格要求，提供一种纳米粉体复合植物绝缘油的制备方法。
具体方案如下：
一种纳米粉体复合植物绝缘油的制备方法，其关键在于，包括以下步骤：
S1.对纳米粉体进行表面处理；
S2.对植物绝缘油进行除水、除气处理；
S3.将处理后的所述纳米粉体与植物绝缘油进行超声搅拌混合后进行真空干燥制得。
作为优选方案，所述步骤S1包括如下步骤：
S1.1.将纳米粉体与无水乙醇、正己烷混合均匀；
S1.2.加入适量油酸或异丙醇形成混合液；
S1.3.将所述混合液在40℃-70℃条件下进行超声分散和搅拌。
作为优选方案，所述纳米粉体采用四氧化三铁、氮化铝、氮化硼中的一种或多种组合，所述植物绝缘油采用菜籽油、大豆油、橄榄油中的一种或多种混合。
作为优选方案，所述步骤S3包括如下步骤：
S3.1.将经过步骤S1和步骤S2得到材料加入微流控芯片中；
S3.2.控制微流控芯片注入流速，在微流控沟道中用超声振子进行超声通过TiO2/Al2O3多孔滤膜处理。
S3.3将超声处理后的复合物进行真空干燥及真空除气，密封保存。
作为优选方案，步骤S3中超声波的频率为40kHZ,功率密度为18W/cm2,超声振荡的温度为40-60℃。
作为优选方案，所述纳米粉体直径为10nm-600nm。
有益效果：本发明的一种纳米粉体复合植物绝缘油的制备方法，制备步骤简单，材料和设备成本较低，利于推广，利于工业化生产；制备的产品含有的纳米粉体具有极高的比表面积和反应活性，可以吸收植物绝缘油老化过程中产生的活性氧，抑制植物绝缘油酯分子的氧化过程，同时，纳米粉体能够吸附植物绝缘油中的水分，从而降低酯分子的水解作用，提高植物绝缘油的抗老化作用；同时，纳米粉体会在电场作用下发生极化，在其周围形成大量陷阱，从而阻碍油中带电粒子的迁移，降低电导电流，提高击穿电压。
附图说明
图1为本发明的工艺流程示意图。
具体实施方式
下面结合实施例和附图对本发明作进一步的详细说明：
实施例：
如附图1所示，一种纳米粉体复合植物绝缘油的制备方法，其关键在于，包括以下步骤：
S1.对纳米粉体进行表面处理；
S2.对植物绝缘油进行除水、除气处理；
S3.将处理后的纳米粉体与植物绝缘油进行超声搅拌混合后进行真空干燥制得，其中超声波的频率为40kHZ,功率密度为18W/cm2,超声振荡的温度为40-60℃。
在具体实施时，步骤S1包括如下步骤：
S1.1.将纳米粉体与无水乙醇、正己烷混合均匀；
S1.2.加入适量油酸或异丙醇形成混合液；
S1.3.将混合液在40℃-70℃条件下进行超声分散和搅拌。
步骤S3包括如下步骤：
S3.1.将经过步骤S1和步骤S2得到材料加入微流控芯片中；
S3.2.控制微流控芯片注入流速，在微流控沟道中用超声振子进行超声通过TiO2/Al2O3多孔滤膜处理。
S3.3将超声处理后的复合物进行真空干燥及真空除气，密封保存。
在进行实际生产时，上述纳米粉体采用四氧化三铁、氮化铝、氮化硼中的一种或多种组合，纳米粉体直径为10nm-600nm，纳米粉体和添加剂(油酸或异丙醇)质量比为：1:100-1:10，纳米粉体在制备产品中的质量占比为1:1*105-1:20，植物绝缘油采用菜籽油、大豆油、橄榄油中的一种或多种混合。
最后需要说明的是，上述描述仅仅为本发明的优选实施例，本领域的普通技术人员在本发明的启示下，在不违背本发明宗旨及权利要求的前提下，可以做出多种类似的表示，这样的变换均落入本发明的保护范围之内。

Claims (6)

1.一种纳米粉体复合植物绝缘油的制备方法，其特征在于，包括以下步骤：
S1.对纳米粉体进行表面处理；
S2.对植物绝缘油进行除水、除气处理；
S3.将处理后的所述纳米粉体与植物绝缘油进行超声搅拌混合后进行真空干燥制得。
2.根据权利要求1所述的一种纳米粉体复合植物绝缘油的制备方法，其特征在于，所述步骤S1包括如下步骤：
S1.1.将纳米粉体与无水乙醇、正己烷混合均匀；
S1.2.加入适量油酸或异丙醇形成混合液；
S1.3.将所述混合液在40℃-70℃条件下进行超声分散和搅拌。
3.根据权利要求1或2所述的一种纳米粉体复合植物绝缘油的制备方法，其特征在于：所述纳米粉体采用四氧化三铁、氮化铝、氮化硼中的一种或多种组合，所述植物绝缘油采用菜籽油、大豆油、橄榄油中的一种或多种混合。
4.根据权利要求3所述的一种纳米粉体复合植物绝缘油的制备方法，其特征在于，所述步骤S3包括如下步骤：
S3.1.将经过步骤S1和步骤S2得到材料加入微流控芯片中；
S3.2.控制微流控芯片注入流速，在微流控沟道中用超声振子进行超声通过TiO2/Al2O3多孔滤膜处理；
S3.3将超声处理后的复合物进行真空干燥及真空除气，密封保存。
5.根据权利要求4所述的一种纳米粉体复合植物绝缘油的制备方法，其特征在于：步骤S3中超声波的频率为40kHZ,功率密度为18W/cm2,超声振荡的温度为40-60℃。
6.根据权利要求1所述的一种纳米粉体复合植物绝缘油的制备方法，其特征在于：所述纳米粉体直径为10nm-600nm。
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CN116731773A (zh) * 2023-06-13 2023-09-12 上海江天高分子材料有限公司 一种可降解的大豆基天然酯绝缘油及其制备方法和应用

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CN101901637A (zh) * 2010-07-29 2010-12-01 重庆大学 植物绝缘油和改性纳米粉体的复合物及其应用和制备方法
CN104992749A (zh) * 2015-07-06 2015-10-21 重庆大学 含改性富勒烯纳米粒子和植物绝缘油的复合物
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