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发明公开
CN110041987A 一种稳定型、耐氧化、高磁流变效应的磁流变润滑脂 无效 - 驳回

一种稳定型、耐氧化、高磁流变效应的磁流变润滑脂
摘要：
本发明提供了一种稳定型、耐氧化、高磁流变效应的磁流变润滑脂，其特征在于包括下列质量比的原料：羰基铁粉30-90%，十二羟基硬脂酸锂0.1-6%，基础油10-70%，添加剂0.2-5%；所述基础油为乙基硅油；所述添加剂为硫叉二苯胺、二卞基二硫、二苯胺，其中二苯胺用量为0.1-1%，有机硫化物用量为0.1-4%，其中硫叉二苯胺用量为≤2%、二卞基二硫用量为≤2%。本发明制备的磁流变润滑脂表现出极佳的稳定性、磁流变效应和耐氧化性；获得的磁流变润滑脂5天沉降量为0，30天沉降量小于2%，磁流变效应可达36200%，在200℃、1MPa氧气气氛下氧化诱导时间大于70min。该磁流变润滑脂在外加磁场为500 mT时，储能模量可达126 kPa。
摘要（英）：

The invention provides stable and oxidation-resistant magnetorheological lubricating grease with a high magnetorheological effect. The stable and oxidation-resistant magnetorheological lubricating grease is characterized by being prepared from raw materials in percentage by mass as follows: 30%-90% of carbonyl iron powder, 0.1%-6% of lithium 12-hydroxy stearate, 10%-70% of base oil and 0.2%-5% ofadditives; the base oil is ethyl silicone oil; the additives are phenothiazine, dibenzyl disulfide and diphenylamine, wherein the dosage of diphenylamine is 0.1%-1%, the dosage of organic sulfide is 0.1%-4%, the dosage of phenothiazine is smaller than or equal to 2%, and the dosage of the dibenzyl disulfide is smaller than or equal to 2%. The prepared magnetorheological lubricating grease has excellent stability, magnetorheological effect and oxidation resistance; the settlement amount of the obtained magnetorheological lubricating grease is 0 in 5 days and smaller than 2% in 30 days, the magnetorheological effect can reach 36200%, and the oxidation induction time is longer than 70 min in the oxygen atmosphere under the pressure of 1 MPa at the temperature of 200 DEG C. When the magnetorheological lubricating grease is 500 mT in an external magnetic field, the storage modulus can reach 126 kPa.

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