CN106145905A - 一种氮化钒铁‑钛酸锂改性密封环及其制备方法 - Google Patents

一种氮化钒铁‑钛酸锂改性密封环及其制备方法 Download PDF

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CN106145905A
CN106145905A CN201610473221.XA CN201610473221A CN106145905A CN 106145905 A CN106145905 A CN 106145905A CN 201610473221 A CN201610473221 A CN 201610473221A CN 106145905 A CN106145905 A CN 106145905A
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lithium titanate
ferrovanadium nitride
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韦伟
曹波
张普雷
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HEFEI WEIHUA INTELLIGENT PARKING EQUIPMENT Co Ltd
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Abstract

本发明公开了一种氮化钒铁‑钛酸锂改性密封环，其是由下述重量份的原料制得：氧化铝85‑95，FeV65N1氮化钒铁5‑10，钛酸锂3‑5，纳米二氧化钛P25 0.5‑1，纳米二氧化硅0.1‑0.2，纳米氧化铈1‑2，羟乙基纤维素0.3‑0.5，钛酸酯偶联剂TMC‑201 0.15‑0.25，氢氧化钠6‑8，聚山梨酯‑80 0.05‑0.1，鳞片石墨粉0.5‑1。本发明的金属陶瓷密封环不仅耐腐蚀性能好，而且抗冲击、抗裂性能得到改善，具有良好的耐用性，使用寿命长，并且具有高强度、高韧性和优良的加工性能，稳定性高，使用性能好。

Description

一种氮化钒铁-钛酸锂改性密封环及其制备方法
技术领域
本发明涉及金属陶瓷密封环材料技术领域，尤其涉及一种氮化钒铁-钛酸锂改性密封环及其制备方法。
背景技术
潜水泵是深井提水的重要设备，将地下水提取到地表，在我国广泛应用于农田灌溉、生活用水、矿山工业、海水提升、轮船调载、喷泉景观、温泉洗浴等领域。在实际使用过程中，由于输送介质的腐蚀、摩擦等原因，常常存在密封环磨损严重的问题。密封环的作用是防止水泵叶轮和泵壳之间发生磨蚀，改善水泵进口处的水流状态，提高水泵效率，增强泵的运转可靠性。一旦密封环磨损严重，将引起叶轮与密封环配合间隙增大，水泵泄漏损失增加，流量下滑快等问题，最终对潜水泵的使用寿命和运行效率下降产生严重的负面影响。因此潜水泵对密封环的材质有较高的要求。
通常潜水泵的密封环是用不锈钢等金属材料加工而成，由于金属材料的耐磨性较差，容易损坏，使用寿命不长，严重影响了水泵质量。金属陶瓷密封环与金属密封环相比，具有硬度高、耐磨性好、耐腐蚀等优点。200511160458.7公开了一种高纯度氧化铝密封环，具有密度高、耐磨损的优点，且能适应恶劣环境下的腐蚀，然而，氧化铝金属陶瓷材料具有脆性，使得氧化铝陶瓷密封环的韧性较差，抗冲击性能低，容易发生开裂，影响其耐用性和使用寿命。
发明内容
本发明目的就是为了弥补已有技术的缺陷，提供一种高韧性、高塑性、抗开裂、耐用性能好的氮化钒铁-钛酸锂改性密封环及其制备方法。
本发明是通过以下技术方案实现的：
一种氮化钒铁-钛酸锂改性密封环，其是由下述重量份的原料制得：
氧化铝85-95，FeV65N1氮化钒铁5-10，钛酸锂3-5，纳米二氧化钛P25 0.5-1，纳米二氧化硅0.1-0.2，纳米氧化铈1-2，羟乙基纤维素0.3-0.5，钛酸酯偶联剂TMC-201 0.15-0.25，氢氧化钠6-8，聚山梨酯-80 0.05-0.1，鳞片石墨粉0.5-1。
一种氮化钒铁-钛酸锂改性密封环的制备方法，包括以下步骤：
（1）先将氢氧化钠加入水中配置成10-12mol/L的溶液，然后与纳米二氧化钛P25混合超声分散均匀后共同加入反应釜，将反应釜于150-200℃条件下水热反应10-15h，冷却后将pH调至中性，加入纳米二氧化硅、羟乙基纤维素和聚山梨酯-80搅拌分散均匀，得改性液；
（2）将氧化铝、FeV65N1氮化钒铁按固液重量比1:1-1:2与无水乙醇混合后加入钛酸酯偶联剂搅拌0.5-1h，蒸馏除去乙醇后加入其余原料研磨均匀，得混合粉料；
（3）将步骤（1）中的改性液与步骤（2）中的混合粉料混合后加入适量水搅拌均匀，用球磨机球磨4-6h后先通过喷雾干燥塔于进口温度260-280℃、出口温度100-120℃条件下喷雾干燥，再于200-300℃保温0.5-1h，然后于氮气气氛下600-700℃处理4-6h，冷却后再次球磨0.5-1h，得改性粉料；
（4）将步骤（3）中的改性粉料压坯置于通有惰性气体保护气氛的烧结炉中1550-1650℃烧结2-4h，即得氮化钒铁-钛酸锂改性密封环。
本发明的优点是：
本发明先利用水热法合成钛纳米管，然后将其与纳米二氧化硅、羟乙基纤维素混合制成改性液，与氧化铝、FeV65N1氮化钒铁混合粉料共混均匀后，通过喷雾干燥包覆于混合粉料表面，在混合粉料表面形成碳-钛纳米管-二氧化硅复合包覆层，有效改善了材料的致密性、粘结性能和韧性，再通过钛酸锂等原料的选择与复配，使制得的金属陶瓷密封环不仅耐腐蚀性能好，而且抗冲击、抗裂性能得到改善，具有良好的耐用性，使用寿命长，并且具有高强度、高韧性和优良的加工性能，稳定性高，使用性能好。
具体实施方式
一种氮化钒铁-钛酸锂改性密封环，由下列重量(kg)的组分原料制备而成：
氧化铝85，FeV65N1氮化钒铁5，钛酸锂3，纳米二氧化钛P25 0.5，纳米二氧化硅0.1，纳米氧化铈1，羟乙基纤维素0.3，钛酸酯偶联剂TMC-201 0.15，氢氧化钠6，聚山梨酯-800.05，鳞片石墨粉0.5。
一种氮化钒铁-钛酸锂改性密封环的制备方法，包括以下步骤：
（1）先将氢氧化钠加入水中配置成10mol/L的溶液，然后与纳米二氧化钛P25混合超声分散均匀后共同加入反应釜，将反应釜于150℃条件下水热反应10h，冷却后将pH调至中性，加入纳米二氧化硅、羟乙基纤维素和聚山梨酯-80搅拌分散均匀，得改性液；
（2）将氧化铝、FeV65N1氮化钒铁按固液重量比1:1与无水乙醇混合后加入钛酸酯偶联剂搅拌0.5h，蒸馏除去乙醇后加入其余原料研磨均匀，得混合粉料；
（3）将步骤（1）中的改性液与步骤（2）中的混合粉料混合后加入适量水搅拌均匀，用球磨机球磨4h后先通过喷雾干燥塔于进口温度260℃、出口温度100℃条件下喷雾干燥，再于200℃保温0.5h，然后于氮气气氛下600℃处理4h，冷却后再次球磨0.5h，得改性粉料；
（4）将步骤（3）中的改性粉料压坯置于通有惰性气体保护气氛的烧结炉中1550℃烧结2h，即得氮化钒铁-钛酸锂改性密封环。
上述制得的密封环性能测试结果如下：
硬度：92.2HRA；抗弯强度：737MPa；断裂韧性：10.56MPa·m1/2。

Claims (2)

1.一种氮化钒铁-钛酸锂改性密封环，其特征在于，其是由下述重量份的原料制得：
氧化铝85-95，FeV65N1氮化钒铁5-10，钛酸锂3-5，纳米二氧化钛P25 0.5-1，纳米二氧化硅0.1-0.2，纳米氧化铈1-2，羟乙基纤维素0.3-0.5，钛酸酯偶联剂TMC-201 0.15-0.25，氢氧化钠6-8，聚山梨酯-80 0.05-0.1，鳞片石墨粉0.5-1。
2.根据权利要求1所述的一种氮化钒铁-钛酸锂改性密封环的制备方法，其特征在于，包括以下步骤：
（1）先将氢氧化钠加入水中配置成10-12mol/L的溶液，然后与纳米二氧化钛P25混合超声分散均匀后共同加入反应釜，将反应釜于150-200℃条件下水热反应10-15h，冷却后将pH调至中性，加入纳米二氧化硅、羟乙基纤维素和聚山梨酯-80搅拌分散均匀，得改性液；
（2）将氧化铝、FeV65N1氮化钒铁按固液重量比1:1-1:2与无水乙醇混合后加入钛酸酯偶联剂搅拌0.5-1h，蒸馏除去乙醇后加入其余原料研磨均匀，得混合粉料；
（3）将步骤（1）中的改性液与步骤（2）中的混合粉料混合后加入适量水搅拌均匀，用球磨机球磨4-6h后先通过喷雾干燥塔于进口温度260-280℃、出口温度100-120℃条件下喷雾干燥，再于200-300℃保温0.5-1h，然后于氮气气氛下600-700℃处理4-6h，冷却后再次球磨0.5-1h，得改性粉料；
（4）将步骤（3）中的改性粉料压坯置于通有惰性气体保护气氛的烧结炉中1550-1650℃烧结2-4h，即得氮化钒铁-钛酸锂改性密封环。
CN201610473221.XA 2016-06-23 2016-06-23 一种氮化钒铁‑钛酸锂改性密封环及其制备方法 Pending CN106145905A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10768135B2 (en) 2017-12-27 2020-09-08 Industrial Technology Research Institute Oxidizing gas detection method and apparatus thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1730596A (zh) * 2005-08-18 2006-02-08 宁波东联密封件有限公司 高纯度氧化铝密封环及其制造方法
CN101633491A (zh) * 2009-08-13 2010-01-27 重庆大学 一种制备氧化钛纳米管的工艺

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1730596A (zh) * 2005-08-18 2006-02-08 宁波东联密封件有限公司 高纯度氧化铝密封环及其制造方法
CN101633491A (zh) * 2009-08-13 2010-01-27 重庆大学 一种制备氧化钛纳米管的工艺

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10768135B2 (en) 2017-12-27 2020-09-08 Industrial Technology Research Institute Oxidizing gas detection method and apparatus thereof

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