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Complex grease additive

A grease additive and dispersant technology, which is applied in the direction of additives, lubricating compositions, thickeners, etc., can solve the problem of grease anti-wear performance, limit working ability effect is not obvious, grease improvement has not made substantial progress, graphite Add problems such as weak functionality to achieve the effect of improving the limit working capacity, simple manufacturing process and low cost

Inactive Publication Date: 2009-01-28
威海橡胶化工进出口有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, it has been reported that graphite is used as a grease additive, but the functionality of pure graphite addition is weak, and no substantial progress has been made in the improvement of grease
[0004] Although some other composite additives have also been reported, they have no obvious effect on improving the anti-wear performance and limit working ability of lubricating grease.
Moreover, by using such additives, the amount of grease used is not significantly reduced
[0005] In addition, most of the existing lubricating greases use chemical synthetic additives to improve their functions. The process is relatively complicated, the cost is high, and it is not conducive to environmental protection.

Method used

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  • Complex grease additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 5 parts of polyisobutylene succinimide, 20 parts of sulfurized isobutylene, 5 parts of thiourethane, 5 parts of benzotriazole fatty acid amine salt, and 35 parts of base oil 500SN into the blending kettle, heat to about 65°C to disperse Stir for about 2 hours, vacuum and negative pressure dehydration for about 2 hours; then, send the above product into the saponification kettle, add 10 parts of fatty acid lithium soap, 20 parts of graphite, disperse and stir for about 2.5 hours to saponify; then, pump the above product Grind in a grinder for about 2.5 hours; then, filter the above-mentioned product through a filter whose filter diameter is controlled to be no more than 15 μm to obtain a finished compound grease additive.

Embodiment 2

[0021] Each component in Example 1 is changed as follows: graphite is 49 parts, dispersant is 3 parts of bis-succinimide, extreme pressure antiwear agent is 13 parts of sulfurized isobutylene, zinc dialkyldithiocarbamate 4 parts and 3 parts of benzotriazole fatty acid amine salt, the thickener is 7 parts of fatty acid lithium soap, the base oil is 15 parts of base oil 150SN and 6 parts of base oil 350SN. Except this, according to the same method as Example 1, the finished compound grease additive was obtained.

Embodiment 3

[0023] The components in Example 1 were changed as follows: 35 parts of graphite, 7 parts of monosuccinimide as dispersant, 15 parts of triphenyl thiophosphate and benzotriazole fatty acid amine as extreme pressure antiwear agent 4 parts of salt, 7 parts of fatty acid lithium soap as thickener, 32 parts of base oil 350SN. Except this, according to the same method as Example 1, the finished compound grease additive was obtained.

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Abstract

The invention relates to a compound grease additive, which is characterized by including graphite, a base oil, a dispersing agent, a thickening agent and an extreme pressure antiwear additive, and the composition of the raw materials by weight percentage is as follows: 20 to 50 percent of the graphite, 1 to 10 percent of the dispersing agent, 5 to 10 percent of the thickening agent, 10 to 30 percent of the extreme pressure antiwear additive, and the residue is base oil; the sum of the component percentage of all the raw materials is equal to 100 percent. The compound grease additive of the invention has low cost, can obviously enhance the functionalities of abrasion resistance and ultimate working capacity, etc., obviously reduce the usage amount of the grease, prolong the service cycle of the grease, and is environment-friendly.

Description

technical field [0001] The invention relates to an additive, more specifically, to a composite additive for lubricating grease, that is, a composite grease additive. Background technique [0002] Grease is a plastic lubricant composed of one or more thickeners and one or more lubricating liquids. When the load is low, the grease presents a solid property, and at a certain critical load, the grease begins to deform plastically; after the load is removed, the grease returns to a solid property. [0003] In order to improve the performance of lubricating grease, various additives can be added to improve the properties of anti-wear, anti-oxidation, anti-corrosion, anti-rust, pressure resistance, radiation resistance, water resistance and so on. For example, it has been reported that graphite is used as a grease additive, but the functionality of pure graphite addition is weak, and no substantial progress has been made in the improvement of grease. [0004] Although some other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M143/06C10M119/24C10M117/00C10M113/00C10N30/04C10N30/06C10N30/02
Inventor 公丕桐丁汝涛丛龙凤
Owner 威海橡胶化工进出口有限公司
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