CN106590854A - 一种耐磨自锁螺母用二硫化钼干膜润滑剂及其制作方法 - Google Patents
一种耐磨自锁螺母用二硫化钼干膜润滑剂及其制作方法 Download PDFInfo
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Abstract
本发明公开了一种耐磨自锁螺母用二硫化钼干膜润滑剂,由下列重量份的原料制成:601环氧树脂85‑88、618环氧树脂29‑31、聚乙烯醇缩甲醛10‑11、二硫化钼24‑26、氧化钇11‑12、甲基六氢苯酐3‑4、纳米二氧化硅4.3‑4.8、3‑氨丙基三甲氧基硅烷0.6‑0.8、硬脂酸钙2.1‑2.5、环氧大豆油4‑6、海泡石粉5‑6、硫酸铝0.2‑0.4、混合溶剂57‑59,利用本发明制得的干膜润滑剂与常规油脂润滑比较是一种润滑性能优良的节水、节能、无污染的绿色环保产品,具有耐磨防腐性佳、润滑性能好的优点。
Description
技术领域
本发明涉及润滑剂制备技术领域,尤其涉及一种耐磨自锁螺母用二硫化钼干膜润滑剂及其制作方法。
背景技术
自锁螺母除具有普通螺母的紧固作用以外,还具有锁紧性能,其工作原理一般是靠摩擦力自锁,可以防止在使用中紧固元件发生松动、脱落现象,广泛应用于航空、航天飞行器等机械活动部件的紧固。微动磨损在工业领域普遍存在,被称为工业中的"癌症",自锁螺母在装配或使用过程中不仅由于各种各样的振动环境极易发生微动磨损损伤,而且因多次拧入、拧出经常与发生基体金属相互摩擦、粘接的现象,从而导致螺母的锁紧性能失效,进而对整体机械的结构产生影响,降低了机械的可靠性以及使用寿命,喷涂润滑剂是降低摩擦和减少磨损的有效途径之一。
干膜润滑剂是一种将固体润滑剂、耐磨添加剂等分散于有机或无机粘结剂体系中,通过喷涂、刷涂、浸涂等工艺在摩擦部件表面上成膜以降低其摩擦与磨损的一种新型润滑技术,尤其是有机粘结干膜润滑剂,使用简单,施工方便,将其应用于自锁螺母可在高低温、高负荷、超高真空、强氧化还原和强辐射等环境下有效地润滑,是目前品种最多、应用最广的一类干膜润滑剂。例如《航空航天用热固性二硫化钼干膜润滑剂的研制》一文采用酸酐、601和618混合环氧树脂、胶体二硫化钼及特殊溶剂和添加剂等制备成的热固性二硫化钼干膜润滑剂,结果表明,其膜层不仅附着力、防腐性、耐高低温性及耐液体介质性好,而且在热真空环境下工作性能稳定、摩擦系数低、耐磨寿命长。
但是,目前使用的二硫化钼干膜的突出缺点是在大气(特别在潮湿大气)中容易氧化而发生润滑失效。真空中二硫化钼在1100℃时分解成Mo和S;在空气中,当温度超过400℃时,产生明显的氧化,并生成三氧化钼,影响其润滑性及其对金属表面的粘附作用,因此在空气中二硫化钼可用至350℃,温度再高时摩擦磨损都会增大,为此需要提高干膜的耐潮湿性及耐高温性能,此外,文献中制得的干膜润滑剂使用的环氧树脂粘接剂耐温性能较差,也是导致干膜润滑剂耐温性能相对较差的原因之一,而且文中的干膜润滑剂结构功能都较为单一,仅仅具有润滑作用,涂覆在自锁螺母表面起不到防锈作用,且承载力低、防腐蚀性差、不易去除。
发明内容
本发明目的就是为了弥补已有技术的缺陷,提供一种耐磨自锁螺母用二硫化钼干膜润滑剂及其制作方法。
本发明是通过以下技术方案实现的:
一种耐磨自锁螺母用二硫化钼干膜润滑剂,由下列重量份的原料制成:601环氧树脂85-88、618环氧树脂29-31、聚乙烯醇缩甲醛10-11、二硫化钼24-26、氧化钇11-12、甲基六氢苯酐3-4、纳米二氧化硅4.3-4.8、3-氨丙基三甲氧基硅烷0.6-0.8、硬脂酸钙2.1-2.5、环氧大豆油4-6、海泡石粉5-6、硫酸铝0.2-0.4、混合溶剂57-59,所述的混合溶剂是由乙二醇单乙醚、二甲苯与丙酮按照质量百分比1∶5∶4混合而成。
所述的一种耐磨自锁螺母用二硫化钼干膜润滑剂的制作方法,包括以下步骤:
(1)将海泡石粉在干燥箱中100-120℃预热干燥1-2小时,加入质量分数为5-8%的硫酸铝溶液,在60-90℃下超声研磨20-30分钟,喷雾干燥,于1000-1100℃温度下煅烧15-20分钟,冷却至室温加入硬脂酸钙研磨20-30分钟得改性海泡石粉;
(2)将纳米二氧化硅在干燥箱中100-120℃预热干燥1-2小时,保持温度加入3-氨丙基三甲氧基硅烷搅拌10-15分钟,真空干燥得改性纳米二氧化硅;
(3)将601环氧树脂、618环氧树脂、聚乙烯醇缩甲醛投入高混机中加入混合溶剂升温至85-95℃搅拌至全部溶解,加入步骤(2)物料高速搅拌20-30分钟得无机纳米改性的混合环氧树脂液;
(4)将二硫化钼、氧化钇于720-820℃煅烧处理30-40分钟,降温至110-120℃加入环氧大豆油、步骤(1)物料研磨1-2小时,于75-85℃加入步骤(3)物料及其他剩余成分超声分散研磨2-4小时,出料。
本发明的优点是:本发明以二硫化钼为润滑剂,二硫化钼中S原子暴露在二硫化钼晶体层的表面, 与金属表面原子形成化学键从而对金属表面产生很强的粘附作用,易形成转移膜,在各种摩擦条件下, 二硫化钼在金属上的转移膜呈明显的取向排列,其基础面平行于金属表面,因此降低了摩擦磨损,在摩擦过程中,添加的氧化钇不仅起到了承载的作用可以使二硫化钼更好的取向,与二硫化钼协同抗磨,还提高产品的耐高温性能和硬度;将601环氧树脂、618环氧树脂进行复合无机纳米改性后作为有机粘结剂,改善了粘结剂的耐高温性能和耐候性,最后再配伍改性的海泡石粉作为填料及其他有效添加剂,明显改善了干膜润滑剂的润滑性和防锈耐潮性能,制得的干膜润滑剂与常规油脂润滑比较是一种润滑性能优良的节水、节能、无污染的绿色环保产品,具有耐磨防腐性佳、润滑性能好的优点。
具体实施方式
一种耐磨自锁螺母用二硫化钼干膜润滑剂,由下列重量份的原料制成:601环氧树脂85、618环氧树脂29、聚乙烯醇缩甲醛10、二硫化钼24、氧化钇11、甲基六氢苯酐3、纳米二氧化硅4.3、3-氨丙基三甲氧基硅烷0.6、硬脂酸钙2.1、环氧大豆油4、海泡石粉5、硫酸铝0.2、混合溶剂57,所述的混合溶剂是由乙二醇单乙醚、二甲苯与丙酮按照质量百分比1∶5∶4混合而成。
所述的一种耐磨自锁螺母用二硫化钼干膜润滑剂的制作方法,包括以下步骤:
(1)将海泡石粉在干燥箱中100-120℃预热干燥1-2小时,加入质量分数为5-8%的硫酸铝溶液,在60-90℃下超声研磨20-30分钟,喷雾干燥,于1000-1100℃温度下煅烧15-20分钟,冷却至室温加入硬脂酸钙研磨20-30分钟得改性海泡石粉;
(2)将纳米二氧化硅在干燥箱中100-120℃预热干燥1-2小时,保持温度加入3-氨丙基三甲氧基硅烷搅拌10-15分钟,真空干燥得改性纳米二氧化硅;
(3)将601环氧树脂、618环氧树脂、聚乙烯醇缩甲醛投入高混机中加入混合溶剂升温至85-95℃搅拌至全部溶解,加入步骤(2)物料高速搅拌20-30分钟得无机纳米改性的混合环氧树脂液;
(4)将二硫化钼、氧化钇于720-820℃煅烧处理30-40分钟,降温至110-120℃加入环氧大豆油、步骤(1)物料研磨1-2小时,于75-85℃加入步骤(3)物料及其他剩余成分超声分散研磨2-4小时,出料。
利用本发明制得的干膜润滑剂具有如下技术指标:
(1)将试片400℃下保温10min,取出在室温下保持10min为一循环,共进行10循试验,观察涂层表面未发现裂纹、变软等现象,耐高温性和耐温度交变性能良好;
(2)将试片分别在70℃的RP-3燃油和120℃的HH-2航空滑油中浸泡100h,观察涂层表面,未发现起泡、变软和脱落等现象,耐油性良好;
(3)按照HB6688—1992试验其承载能力为8580N,耐磨寿命(4450N)为258min;
(4)按照ASTM D2625试验其摩擦系数为:0.048。
Claims (2)
1.一种耐磨自锁螺母用二硫化钼干膜润滑剂,其特征在于,由下列重量份的原料制成:601环氧树脂85-88、618环氧树脂29-31、聚乙烯醇缩甲醛10-11、二硫化钼24-26、氧化钇11-12、甲基六氢苯酐3-4、纳米二氧化硅4.3-4.8、3-氨丙基三甲氧基硅烷0.6-0.8、硬脂酸钙2.1-2.5、环氧大豆油4-6、海泡石粉5-6、硫酸铝0.2-0.4、混合溶剂57-59,所述的混合溶剂是由乙二醇单乙醚、二甲苯与丙酮按照质量百分比1∶5∶4混合而成。
2.根据权利要求1所述的一种耐磨自锁螺母用二硫化钼干膜润滑剂的制作方法,其特征在于包括以下步骤:
(1)将海泡石粉在干燥箱中100-120℃预热干燥1-2小时,加入质量分数为5-8%的硫酸铝溶液,在60-90℃下超声研磨20-30分钟,喷雾干燥,于1000-1100℃温度下煅烧15-20分钟,冷却至室温加入硬脂酸钙研磨20-30分钟得改性海泡石粉;
(2)将纳米二氧化硅在干燥箱中100-120℃预热干燥1-2小时,保持温度加入3-氨丙基三甲氧基硅烷搅拌10-15分钟,真空干燥得改性纳米二氧化硅;
(3)将601环氧树脂、618环氧树脂、聚乙烯醇缩甲醛投入高混机中加入混合溶剂升温至85-95℃搅拌至全部溶解,加入步骤(2)物料高速搅拌20-30分钟得无机纳米改性的混合环氧树脂液;
(4)将二硫化钼、氧化钇于720-820℃煅烧处理30-40分钟,降温至110-120℃加入环氧大豆油、步骤(1)物料研磨1-2小时,于75-85℃加入步骤(3)物料及其他剩余成分超声分散研磨2-4小时,出料。
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CN114480003A (zh) * | 2022-02-22 | 2022-05-13 | 江苏中晟高科环境股份有限公司 | 一种金属拉丝固体润滑剂及其制备方法 |
CN114480003B (zh) * | 2022-02-22 | 2022-12-16 | 江苏中晟高科环境股份有限公司 | 一种金属拉丝固体润滑剂及其制备方法 |
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