共查询到20条相似文献,搜索用时 187 毫秒
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采用Dry-TOST氧化油泥模拟试验评价4种市售汽轮机油在氧化寿命和油泥生成量方面的特点,结果表明:A油的氧化寿命最长为1 700h,但油泥生成最多,为1 358μg/g;B油的氧化寿命为1 512h,油泥生成超过100μg/g,为250μg/g;C油的氧化寿命为1 300h,油泥生成较少,为58μg/g;D油虽然油泥生成最少,为22μg/g,但氧化寿命最短为336h。汽轮机油需要兼顾氧化寿命和油泥生成量,只有C油兼顾该性能,满足三菱重工规格MS04-MA-CL002的要求。 相似文献
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对6种不同类型汽轮机油进行了高温氧化试验。在实验过程中采用旋转氧弹、FTIR法、RULER以及酸值等试验方法对汽轮机油氧化过程中的氧弹保持性、抗氧剂消耗、油泥析出、酸值增加等进行了考察。分析了汽轮机油配方组成对其氧化安定性的影响,各种测试方法在分析油品氧化情况时具有的特点,提出了监测汽轮机油氧化衰减是比较科学的方法。 相似文献
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用碳黑斑点和油泥生成模拟试验法考察了汽油机油对污染物的悬浮分散能力与油泥生成倾向,初步分析了油泥形貌和组成。试验表明:不同油样对污染的分散能力不同,油泥生成的倾向也不同。实验室模拟试验法能较好地共分不同油样的油泥生成倾向。实际使用的汤油机油生成的油泥中存在各种来源的不溶物,油泥的有机组成可以被分为酸、碱、中性三组分。 相似文献
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一台1000 MW机组汽轮机油颗粒污染度长期超标,停机检修时在汽轮机油箱底部发现大量深棕色油泥,严重威胁机组的安全运行。实验室采用红外光谱法和ICP法对油泥和油品进行成分分析,结果表明油泥的产生主要是油品的氧化降解产物同润滑系统中的腐蚀产物和水分共同作用导致的,诊断出冷油器存在冷却水的泄露,造成汽轮机油系统的腐蚀。 相似文献
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在日常的润滑油市场技术服务工作中,经常会遇到用户反映汽轮机油油品中有出现油泥的现象,用户会对油品质量产生疑问。文章通过对一例KTA32汽轮机油使用中油泥生成的原因进行具体事例分析,对出现油泥的油品进行多种指标检测,总结出油泥产生的主要原因。为广大用户在日常的润滑油使用中,对出现的这一情况进行正确分析,并进行正确的预防处理及解决提供经验。 相似文献
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介绍了国内外汽轮机发电机组用油的使用现状和最新发展趋势,重点阐述了汽轮机油规格和基础油的变化发展趋势,汽轮发电机组原设备制造商对汽轮机油性能的要求更加苛刻,使得具有极佳的高温氧化和热氧化稳定性、低的油泥形成及极小的粘度变化的APIⅡ类基础油在汽轮机油中得以广泛使用;同时阐述了昆仑汽轮机油系列产品中采用加氢异构化工艺生产的APIⅡ类基础油研制的汽轮机油的性能优势。 相似文献
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K. K. Papok A. P. Zarubin N. I. Petrova 《Chemistry and Technology of Fuels and Oils》1973,9(7):545-546
Conclusion Under dynamic conditions of thin-film oxidation, the susceptibility of base oils to varnish formation (at temperatures from 290 to 350°C is strongly influenced by the catalytic action of the metal surface on which the varnish is formed; for MK-22 oil and MS-20 (Groznyi) oil, steel has a greater catalytic effect than aluminum, while for SU machine oil and D-11 (Baku) the reverse is true, so that the varnish formation on aluminum is considerably more severe.Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 7, pp. 43–44, July, 1973. 相似文献
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用顺丁烯二酸酐衍生物、苯乙烯与基体醇酸树脂反应制备了改性苯乙烯醇酸树脂。研究表明 :当基体树脂中顺酐的质量分数为 8%~ 1 0 %时 ,改性树脂的清漆涂膜外观透明 ,表干时间为 1 h。在合成体系中 (苯乙烯的质量分数为 4 0 % )添加 1 0 % (与苯乙烯的质量比 )的顺酐衍生物 ,苯乙烯最终转化率可达 98%。在适宜的添加量下 ( 1 0 %~ 1 2 % ) ,改性树脂涂膜抗冲击强度大于 5 0 kg· cm;清漆的外观平整光滑 ,经 72 h耐水性和 2 4 h耐汽油试验 ,无变化。 相似文献
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D. V. Boikov T. B. Bugai Yu. P. Mal’kov 《Chemistry and Technology of Fuels and Oils》2007,43(4):299-304
The basic physicochemical indexes of M-10-D2(m) engine oil change much less intensively in a gas engine than in a diesel. Low accumulation of elements-indicators of parts
wear-and fouling of parts by carbon and varnish deposits were noted. Formation of ash deposits in the valves was more important.
Dithiophosphate additives were depleted similarly in both engines. Information on the requirements for special oils for gas
engines is reported
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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 4, pp. 24–27, July–August, 2007. 相似文献
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《Egyptian Journal of Petroleum》2015,24(3):247-253
In this study, heterocyclic compounds containing 3-((4-bromophenyl)diazenyl)-5-(methylthio)-6-(phenylsulfonyl)pyrazolo-[1,5-a]pyrimidine-2,7-diamine (compound II) and 4-(methylthio)-3-phenylsulfonyl)benzo[4,5]imidazo[1,2-a]pyrimidin-2-amine (compound III) were prepared and their chemical structures were confirmed by spectral data. The new compounds were screened for antimicrobial activity against six different microbial strains when physically incorporated into polyurethane varnish formula and printing ink paste. Experimental coatings were manufactured on laboratory scale and applied by brush onto glass and steel panels. Results of the biological activity indicated that polyurethane varnishes and printing ink paste containing compounds II and III exhibit a very good antimicrobial effect. The physical and mechanical resistances of the polyurethane varnish formulations were also studied to evaluate any drawbacks associated with this addition. The studies revealed that the physical incorporation of compounds II and III enhances slightly the physical and mechanical properties. 相似文献
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R. A. Kemalov S. N. Stepin A. F. Kemalov R. Z. Fakhrutdinov I. N. Diyarov T. F. Ganieva 《Chemistry and Technology of Fuels and Oils》2003,39(5):275-277
Technology was developed for manufacturing special asphalt varnish with improved properties directly in the stage of oxidation of the feedstock by addition of modifiers. Oxidation is intensified and the yield of target product increases. The asphalt obtained satisfies the requirements in GOST 21822–87 for brittle petroleum asphalts for paints and varnishes. The performance characteristics of coatings made from this asphalt are significantly improved. 相似文献
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采用研制的4-J氧甲酰氨基甲苯2-异氰酸酯(BCATI)或4-丙烯酰氧乙氧甲酰氨基甲苯2-异氰酸酯(AECATI)中的异氰酸基与环氧树脂或丙烯酸环氧酯树脂中的部分羟基反应,得到改性环氧树脂。经优选试验,得到了合成的适宜条件。通过化学测试与IR图解析,确定了有关合成反应的终点与产物结构,并以改性树脂为原料制成了性能优良的情漆。 相似文献