CN106635275A - 一种纳米氟化铈改性耐高温抗磨变压器绝缘油及其制备方法 - Google Patents

一种纳米氟化铈改性耐高温抗磨变压器绝缘油及其制备方法 Download PDF

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CN106635275A
CN106635275A CN201610830584.4A CN201610830584A CN106635275A CN 106635275 A CN106635275 A CN 106635275A CN 201610830584 A CN201610830584 A CN 201610830584A CN 106635275 A CN106635275 A CN 106635275A
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崔应文
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Abstract

本发明公开了一种纳米氟化铈改性耐高温抗磨变压器绝缘油，其是由下述重量份的原料制得：矿物基础油1000‑1500，纳米氟化铈0.5‑1，硅烷偶联剂KH‑570 0.2‑0.3，偶氮二异丁腈0.015‑0.025，月桂酸单甘油酯0.5‑1，甲基丙烯酸甲酯1‑1.5，亚磷酸二丁酯0.3‑0.5，纳米氧化铝0.5‑1，2,6‑二叔丁基苯酚1‑1.5，苯并三氮唑0.5‑1，硫磷丁辛伯烷基锌盐0.3‑0.5。本发明的变压器绝缘油兼具有优良的稳定性和绝缘性能，可以长期贮存并保持良好的性能，同时耐高温、抗磨性能好，使用寿命长，具有较高的实用价值。

Description

一种纳米氟化铈改性耐高温抗磨变压器绝缘油及其制备方法
技术领域
本发明涉及变压器油技术领域，尤其涉及一种纳米氟化铈改性耐高温抗磨变压器绝缘油及其制备方法。
背景技术
油纸绝缘是一种典型的液固复合绝缘，在油浸式变压器中有着广泛的应用。随着电力系统电压等级和传输容量的不断提升，油纸复合绝缘已经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要求。为了提升变压器绝缘系统的性能，如何提高绝缘介质的绝缘特性已经成为目前的研究热点之一。变压器油是变压器中重要的绝缘介质，寻求改善变压器油绝缘性能和散热性能的有效途径，对提高变压器运行的效率和安全可靠性具有重要意义。
目前，为提高绝缘材料的性能，在绝缘材料领域引入纳米技术是一个重要的发展方向。其中，纳米改性变压器油的研究给传统的变压器油纸复合绝缘结构带来了新的提高空间。文献《半导体纳米粒子改性变压器油的绝缘性能及机制研究》利用纳米粒子TiO2对变压器油进行改性，发现纳米粒子的加入能显著提高变压器油的绝缘特性。然而实际应用中，纳米颗粒容易发生团聚，导致可靠性的降低。常用的表面活性剂处理法对纳米粒子的分散性和稳定性的改善有限，而且会对纳米改性变压器油的绝缘性能产生不利影响。因此，如何兼顾纳米粒子在变压器油中的分散、稳定性以及绝缘性能，成为目前需要解决的重要问题。
发明内容
本发明目的就是为了弥补已有技术的缺陷，提供一种兼顾纳米粒子分散、稳定性以及优良绝缘性能的纳米氟化铈改性耐高温抗磨变压器绝缘油及其制备方法。
本发明是通过以下技术方案实现的：
一种纳米氟化铈改性耐高温抗磨变压器绝缘油，其是由下述重量份的原料制得：
矿物基础油1000-1500，纳米氟化铈0.5-1，硅烷偶联剂KH-570 0.2-0.3，偶氮二异丁腈0.015-0.025，月桂酸单甘油酯0.5-1，甲基丙烯酸甲酯1-1.5，亚磷酸二丁酯0.3-0.5，纳米氧化铝0.5-1，2,6-二叔丁基苯酚1-1.5，苯并三氮唑0.5-1，硫磷丁辛伯烷基锌盐0.3-0.5。
一种纳米氟化铈改性耐高温抗磨变压器绝缘油的制备方法，包括以下步骤：
（1）将硅烷偶联剂KH-570按重量比1:100-1:150与无水乙醇混合均匀，然后加入纳米氧化铝、纳米氟化铈超声分散5-10min，然后于40-50℃搅拌1-2h，冷却后离心分离，将得到的固体颗粒于90-100℃烘干处理10-15min；
（2）将步骤（1）中得到的物料按重量比1:40-1:50与无水乙醇混合并超声分散10-20min，然后氮气保护下于60-70℃依次缓慢加入甲基丙烯酸甲酯和偶氮二异丁腈并搅拌反应2-4h，冷却后离心分离，将得到的固体颗粒再用无水乙醇反复洗涤2-4次；
（3）先将月桂酸单甘油酯、亚磷酸二丁酯混合并于60-80℃搅拌0.5-1h后加入矿物基础油中搅拌均匀，再加入步骤（2）中的物料以及其余原料超声分散均匀，然后进行精滤除去杂质，最后经过真空脱水脱气，即得纳米氟化铈改性耐高温抗磨变压器绝缘油。
本发明的优点是：
本发明通过硅烷偶联剂KH-570对纳米粒子进行表面硅烷化，然后接枝甲基丙烯酸甲酯，能明显增加纳米粒子之间的空间位阻，有效降低纳米粒子的相互聚集作用，提高纳米粒子在变压器油中的分散性和稳定性，同时改善纳米粒子的绝缘性能；通过纳米氟化铈等原料的复配增效，有效改善变压器油的耐高温、抗磨性能，与其余原料复合后制得的变压器绝缘油兼具有优良的稳定性和绝缘性能，可以长期贮存并保持良好的性能，同时耐高温、抗磨性能好，使用寿命长，具有较高的实用价值。
具体实施方式
一种纳米氟化铈改性耐高温抗磨变压器绝缘油，由下列重量(kg)的组分原料制备而成：
矿物基础油1000，纳米氟化铈0.5，硅烷偶联剂KH-570 0.2，偶氮二异丁腈0.015，月桂酸单甘油酯0.5，甲基丙烯酸甲酯1，亚磷酸二丁酯0.3，纳米氧化铝0.5，2,6-二叔丁基苯酚1，苯并三氮唑0.5，硫磷丁辛伯烷基锌盐0.3。
一种纳米氟化铈改性耐高温抗磨变压器绝缘油的制备方法，包括以下步骤：
（1）将硅烷偶联剂KH-570按重量比1:100与无水乙醇混合均匀，然后加入纳米氧化铝、纳米氟化铈超声分散5min，然后于40℃搅拌1h，冷却后离心分离，将得到的固体颗粒于90℃烘干处理10min；
（2）将步骤（1）中得到的物料按重量比1:40与无水乙醇混合并超声分散10min，然后氮气保护下于60℃依次缓慢加入甲基丙烯酸甲酯和偶氮二异丁腈并搅拌反应2h，冷却后离心分离，将得到的固体颗粒再用无水乙醇反复洗涤2次；
（3）先将月桂酸单甘油酯、亚磷酸二丁酯混合并于60℃搅拌0.5h后加入矿物基础油中搅拌均匀，再加入步骤（2）中的物料以及其余原料超声分散均匀，然后进行精滤除去杂质，最后经过真空脱水脱气，即得纳米氟化铈改性耐高温抗磨变压器绝缘油。
上述矿物基础油选取中石化HVI Ia 60基础油。
经检验，上述制得的变压器绝缘油性能如下：
平均工频击穿电压：84.7kV；
介质损耗因数（90℃）：0.00073；
185℃、12周的热老化处理后介质损耗因数（90℃）：0.0154；
静置1年后仍保持透明澄清，无沉淀。

Claims (2)

1.一种纳米氟化铈改性耐高温抗磨变压器绝缘油，其特征在于，其是由下述重量份的原料制得：
矿物基础油1000-1500，纳米氟化铈0.5-1，硅烷偶联剂KH-570 0.2-0.3，偶氮二异丁腈0.015-0.025，月桂酸单甘油酯0.5-1，甲基丙烯酸甲酯1-1.5，亚磷酸二丁酯0.3-0.5，纳米氧化铝0.5-1，2,6-二叔丁基苯酚1-1.5，苯并三氮唑0.5-1，硫磷丁辛伯烷基锌盐0.3-0.5。
2.根据权利要求1所述的一种纳米氟化铈改性耐高温抗磨变压器绝缘油的制备方法，其特征在于，包括以下步骤：
（1）将硅烷偶联剂KH-570按重量比1:100-1:150与无水乙醇混合均匀，然后加入纳米氧化铝、纳米氟化铈超声分散5-10min，然后于40-50℃搅拌1-2h，冷却后离心分离，将得到的固体颗粒于90-100℃烘干处理10-15min；
（2）将步骤（1）中得到的物料按重量比1:40-1:50与无水乙醇混合并超声分散10-20min，然后氮气保护下于60-70℃依次缓慢加入甲基丙烯酸甲酯和偶氮二异丁腈并搅拌反应2-4h，冷却后离心分离，将得到的固体颗粒再用无水乙醇反复洗涤2-4次；
（3）先将月桂酸单甘油酯、亚磷酸二丁酯混合并于60-80℃搅拌0.5-1h后加入矿物基础油中搅拌均匀，再加入步骤（2）中的物料以及其余原料超声分散均匀，然后进行精滤除去杂质，最后经过真空脱水脱气，即得纳米氟化铈改性耐高温抗磨变压器绝缘油。
CN201610830584.4A 2016-09-19 2016-09-19 一种纳米氟化铈改性耐高温抗磨变压器绝缘油及其制备方法 Withdrawn CN106635275A (zh)

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