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Lubricating grease for automobile switch contact and preparation method thereof

A technology of switch contacts and lubricating grease, which is applied in the field of lubricating grease, which can solve the problems of increased surface roughness and unfavorable normal operation of switch contacts, and achieve the effects of good adhesion, easy promotion, and avoiding arc discharge ablation

Inactive Publication Date: 2018-11-09
深圳市合诚润滑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The switch contacts are often worn during use, and wear debris is generated on the contact surface, causing the surface roughness to gradually increase, which is not conducive to the normal operation of the switch contacts. Phenomenon, which requires grease not only to play the role of sealing and lubrication, but also have a certain conductivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: After mixing dioctyl adipate and dioctyl azelate at a mass ratio of 1:1, shake them well to obtain a base oil with uniform and stable components. In terms of mass fraction, 8% azela Acid, 4% 12-hydroxystearic acid was added to 80% mixed base oil at the same time, after ultrasonication for 60min, the system was transferred to the reactor, after heating to 120°C, 4% lithium hydroxide was added to continue the saponification reaction 80min, then raise the temperature to 160°C, remove the moisture produced by acid-base neutralization, and keep it for 40min, continue to raise the temperature to 200°C, carry out high-temperature puffing, and keep it for 80min, after naturally cooling to 110°C, add 1% vulcanization Isobutylene, 1.5% copper oleate, and 1.5% graphite powder were stirred for 70 minutes, cooled to room temperature, and then ground three times with a three-roll mill to obtain special grease for automotive switch contacts.

Embodiment 2

[0027] Example 2: After mixing dioctyl sebacate and dioctyl azelate according to the mass ratio of 2:1, shake them well to obtain a base oil with uniform and stable components. In terms of mass fraction, 6% azela Acid, 6% 12-hydroxystearic acid was added to 76% mixed base oil at the same time, after ultrasonication for 50 minutes, the system was transferred to the reactor, after heating to 140°C, 7% lithium hydroxide was added to continue the saponification reaction 90min, then raise the temperature to 170°C, remove the moisture produced by acid-base neutralization, and keep it for 60min, continue to raise the temperature to 220°C, carry out high-temperature puffing, and keep it for 120min, after naturally cooling to 120°C, add 1.8% vulcanization Cottonseed oil, 2% copper alkenyl succinate, and 1.2% graphene were stirred for 80 minutes, cooled to room temperature, and ground three times with a three-roll mill to obtain a special grease for automotive switch contacts.

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PUM

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Abstract

The invention discloses a lubricating grease for an automobile switch contact and a preparation method thereof. The lubricating grease comprises, by weight, 75 to 92% of ester base oil, 1 to 14% of aliphatic diacid, 1 to 14% of 12-hydroxystearic acid, 1 to 25% of lithium hydroxide, 0.8 to 1.8% of an antiwear agent, 1 to 2.5% of an anti-oxidant and 0.5 to 2% of a conductive agent. The composite lithium-based lubricating grease prepared in the invention can still maintain a low friction coefficient after long-time grinding tests, has good wear resistance, is improved in conductivity and can avoid arc burning; and the preparation method is simple in process, low in cost and easy to promote.

Description

technical field [0001] The invention relates to the technical field of lubricating grease, in particular to a preparation method of special lubricating grease for automobile switch contacts. Background technique [0002] In the long-term use of automotive switch contacts, it is easy to encounter problems such as serious wear and oxidation. In actual use, it is often necessary to add grease to avoid aging of the switch contacts and prolong the service life of the switch contacts. At present, there is a great market demand for special lubricating grease for automotive switch contacts in China, but it mainly depends on imports. [0003] The switch contacts are often worn during use, and wear debris is generated on the contact surface, causing the surface roughness to gradually increase, which is not conducive to the normal operation of the switch contacts. Phenomenon, this requires that the grease not only can play a role in sealing and lubricating, but also has a certain cond...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N30/06
CPCC10M169/04C10M2201/041C10M2205/022C10M2207/126C10M2207/128C10M2207/2825C10M2217/041C10M2219/022C10N2030/06C10N2010/02
Inventor 白传航蓝秉理何德海
Owner 深圳市合诚润滑材料有限公司
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