CN106635279A - 一种防锈阻垢变压器植物绝缘油及其制备方法 - Google Patents

一种防锈阻垢变压器植物绝缘油及其制备方法 Download PDF

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CN106635279A
CN106635279A CN201610830656.5A CN201610830656A CN106635279A CN 106635279 A CN106635279 A CN 106635279A CN 201610830656 A CN201610830656 A CN 201610830656A CN 106635279 A CN106635279 A CN 106635279A
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insulating oil
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崔应文
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Tongling Rike Electronics Co Ltd
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Abstract

本发明公开了一种防锈阻垢变压器植物绝缘油，其是由下述重量份的原料制得：纳米二氧化硅空心球0.15‑0.25，聚乙二醇辛基苯基醚0.1‑0.15，茶多酚0.05‑0.1，抗氧化剂BHA 0.03‑0.05，钛酸四丁酯0.03‑0.05，没食子酸丙酯0.2‑0.4，十二烯基丁二酸0.1‑0.15，硼酸0.5‑1，聚异丁烯丁二酰亚胺0.2‑0.4，二乙醇胺6‑12，精炼植物油80‑100，妥尔油0.5‑1，无水乙醇10‑15。本发明的植物绝缘油具有长期抗氧化安定性能好、粘度低的特点，并且防锈、阻垢性能好，有利于变压器的平稳运行与维护，具有优良的使用性能，使用寿命长。

Description

一种防锈阻垢变压器植物绝缘油及其制备方法
技术领域
本发明涉及变压器绝缘油技术领域，尤其涉及一种防锈阻垢变压器植物绝缘油及其制备方法。
背景技术
绝缘油作为一种重要的液体绝缘介质，大量使用于变压器等电气设备中。矿物绝缘油是由多种碳氢化合物组成的液体混合物，由于其良好的电气绝缘性、冷却性能和低廉的成本得到广泛使用。然而矿物绝缘油的燃点较低，消防安全性能较差；同时生物降解率低，如果发生泄漏或者火灾会严重污染环境，难以满足高性能和绿色环保的需要，为此，新型植物绝缘油的开发已经逐渐成为液体绝缘材料研究的热点。
植物绝缘油是由天然的油料作物经压榨，精炼和改性工艺制备而成，具有良好的电气性能、燃点高、可生物降解，比矿物绝缘油有更好的环境健康特性以及防火安全性。同时，植物绝缘油也存在着介质损耗因数、运动粘度高，容易发生氧化与凝胶现象、变压器运行维护要求高等不足。CN102682869通过将精炼后的植物油与低分子醇进行酯交换反应，有效降低植物绝缘油的粘度，但是对植物绝缘油的长效抗氧化性提高有限。为了满足市场对高性能植物绝缘油的需求，全面改善植物绝缘油的长期氧化安定性、运动粘度和介质损耗等性能，仍需进一步探索与改进。
发明内容
本发明目的就是为了弥补已有技术的缺陷，提供一种长效抗氧化性能好、粘度低、使用寿命长的防锈阻垢变压器植物绝缘油及其制备方法。
本发明是通过以下技术方案实现的：
一种防锈阻垢变压器植物绝缘油，其是由下述重量份的原料制得：
纳米二氧化硅空心球0.15-0.25，聚乙二醇辛基苯基醚0.1-0.15，茶多酚0.05-0.1，抗氧化剂BHA 0.03-0.05，钛酸四丁酯0.03-0.05，没食子酸丙酯0.2-0.4，十二烯基丁二酸0.1-0.15，硼酸0.5-1，聚异丁烯丁二酰亚胺0.2-0.4，二乙醇胺6-12，精炼植物油80-100，妥尔油0.5-1，无水乙醇10-15；
所述纳米二氧化硅空心球的粒径为50-100nm；
所述精炼植物油是普通植物油经过碱炼、脱色、除臭、脱水处理，酸值≤0.03mgKOHg-1的产品。
一种防锈阻垢变压器植物绝缘油的制备方法，包括以下步骤：
（1）按重量称取原料，先将纳米二氧化硅空心球加入无水乙醇中超声分散5-10min，然后加入茶多酚和抗氧化剂BHA搅拌1-2h，再加入钛酸四丁酯超声处理10-15min，最后加入硼酸和十二烯基丁二酸并搅拌均匀，得混合液；
（2）先将二乙醇胺加入精炼植物油中于100-120℃反应1-2h，冷却后加入（1）中的混合液于60-80℃搅拌反应0.5-1h，得改性植物绝缘油；
（3）将（2）中的改性植物绝缘油先与其余原料混合并于50-60℃搅拌1-2h，然后进行减压蒸馏除水除醇，最后过滤精制，即得防锈阻垢变压器植物绝缘油。
本发明的优点是：
本发明一方面通过纳米二氧化硅空心球对抗氧化剂BHA和茶多酚进行负载，并利用钛酸四丁酯对其进行改性形成表面包覆层，从而达到提高稳定性和缓释的目的，有效改善植物绝缘油的长期抗氧化性；一方面通过将植物油与二乙醇胺、硼酸反应将硼引入植物绝缘油结构中，改善了植物绝缘油的抗氧化安定性和粘度性能。再通过其余原料的复配与增效作用，使得到的植物绝缘油具有长期抗氧化安定性能好、粘度低的特点，并且防锈、阻垢性能好，有利于变压器的平稳运行与维护，具有优良的使用性能，使用寿命长。
具体实施方式
一种防锈阻垢变压器植物绝缘油，由下列重量(kg)的组分原料制备而成：
纳米二氧化硅空心球0.15，聚乙二醇辛基苯基醚0.1，茶多酚0.05，抗氧化剂BHA 0.03，钛酸四丁酯0.03，没食子酸丙酯0.2，十二烯基丁二酸0.1，硼酸0.5，聚异丁烯丁二酰亚胺0.2，二乙醇胺6，精炼大豆油80，妥尔油0.5，无水乙醇10；
所述纳米二氧化硅空心球的粒径为50-100nm；
所述精炼大豆油是普通大豆油经过碱炼、脱色、除臭、脱水处理，酸值≤0.03mgKOHg-1的产品。
一种防锈阻垢变压器植物绝缘油的制备方法，包括以下步骤：
（1）按重量称取原料，先将纳米二氧化硅空心球加入无水乙醇中超声分散5min，然后加入茶多酚和抗氧化剂BHA搅拌1h，再加入钛酸四丁酯超声处理10min，最后加入硼酸和十二烯基丁二酸并搅拌均匀，得混合液；
（2）先将二乙醇胺加入精炼大豆油中于100℃反应1h，冷却后加入（1）中的混合液于60℃搅拌反应0.5h，得改性植物绝缘油；
（3）将（2）中的改性植物绝缘油先与其余原料混合并于50℃搅拌1h，然后进行减压蒸馏除水除醇，最后过滤精制，即得防锈阻垢变压器植物绝缘油。
上述制得的植物绝缘油工频击穿电压为75.1kV，90℃介损为0.0022，40℃运动粘度7.2mm2/s，酸值≤0.03mgKOHg-1，氧化后酸值≤0.1mgKOHg-1，各项指标均能满足绝缘油的要求。

Claims (2)

1.一种防锈阻垢变压器植物绝缘油，其特征在于，其是由下述重量份的原料制得：
纳米二氧化硅空心球0.15-0.25，聚乙二醇辛基苯基醚0.1-0.15，茶多酚0.05-0.1，抗氧化剂BHA 0.03-0.05，钛酸四丁酯0.03-0.05，没食子酸丙酯0.2-0.4，十二烯基丁二酸0.1-0.15，硼酸0.5-1，聚异丁烯丁二酰亚胺0.2-0.4，二乙醇胺6-12，精炼植物油80-100，妥尔油0.5-1，无水乙醇10-15；
所述纳米二氧化硅空心球的粒径为50-100nm；
所述精炼植物油是普通植物油经过碱炼、脱色、除臭、脱水处理，酸值≤0.03mgKOHg-1的产品。
2.根据权利要求1所述的一种防锈阻垢变压器植物绝缘油的制备方法，其特征在于，包括以下步骤：
（1）按重量称取原料，先将纳米二氧化硅空心球加入无水乙醇中超声分散5-10min，然后加入茶多酚和抗氧化剂BHA搅拌1-2h，再加入钛酸四丁酯超声处理10-15min，最后加入硼酸和十二烯基丁二酸并搅拌均匀，得混合液；
（2）先将二乙醇胺加入精炼植物油中于100-120℃反应1-2h，冷却后加入（1）中的混合液于60-80℃搅拌反应0.5-1h，得改性植物绝缘油；
（3）将（2）中的改性植物绝缘油先与其余原料混合并于50-60℃搅拌1-2h，然后进行减压蒸馏除水除醇，最后过滤精制，即得防锈阻垢变压器植物绝缘油。
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