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Composition of special ultralow-temperature grease for casters and preparation method of special ultralow-temperature grease

A lubricating grease and ultra-low temperature technology, which is applied in the field of lubricating grease, can solve the problems of high lubricating grease production cost, and achieve the effects of low production cost, good oil separation resistance, and excellent low-temperature start-up performance

Inactive Publication Date: 2016-02-10
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] ③ Solve the problem of high production cost of grease

Method used

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  • Composition of special ultralow-temperature grease for casters and preparation method of special ultralow-temperature grease
  • Composition of special ultralow-temperature grease for casters and preparation method of special ultralow-temperature grease
  • Composition of special ultralow-temperature grease for casters and preparation method of special ultralow-temperature grease

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] base oil 85%,

[0034] Thickener 15%,

[0035] Additives are added according to the proportion of the above components

[0036] Grease structure improver 1%,

[0037] Antioxidant 0.5%,

[0038] Rust inhibitor 0.5%.

[0039] 270 grams of 12-hydroxystearic acid, 135 grams of hydrogenated castor oil fatty acid, 45 grams of stearic acid, 3.75 grams of naphthenic acid, 30 grams of grease structure improver and 765 grams of naphthenic base oil are added to the reactor, heated to At 80-85°C, dissolve 59.5 grams of lithium hydroxide with five times the amount of water to prepare an alkaline solution. Add lye to the reaction kettle at 80-85°C, heat up to 100-115°C for saponification reaction, and control the reaction time at 60-80 minutes; after the saponification reaction, raise the temperature to 140°C to drain water, and control the time at 20-30 minutes. Sampling to measure free acid-base, controlled at 0.04-0.15% NaOH, after the free acid-base is within the control ran...

Embodiment 2

[0045] base oil 87%,

[0046] Thickener 13%,

[0047] Additives are added according to the proportion of the above components

[0048] Grease structure improver 1%,

[0049] Antioxidant 0.5%,

[0050] Rust inhibitor 0.5%.

[0051] 234 grams of 12-hydroxystearic acid, 117 grams of hydrogenated castor oil fatty acid, 39 grams of stearic acid, 3.25 grams of naphthenic acid, 30 grams of grease structure improver and 783 grams of naphthenic base oil are added to the reactor, heated to 80-85°C, dissolve 31 grams of lithium hydroxide with five times of water to prepare an alkaline solution. Add lye to the reaction kettle at 80-85°C, heat up to 100-115°C for saponification reaction, and control the reaction time at 60-80 minutes; after the saponification reaction, raise the temperature to 140°C to drain water, and control the time at 20-30 minutes. Sampling to measure free acid-base, controlled at 0.04-0.15% NaOH, after the free acid-base is within the control range, rapidly rais...

Embodiment 3

[0056] base oil 89%,

[0057] Thickener 11%,

[0058] Additives are added according to the proportion of the above components

[0059] Grease structure improver 1%,

[0060] Antioxidant 0.5%,

[0061] Rust inhibitor 0.5%.

[0062]198 grams of 12-hydroxystearic acid, 99 grams of hydrogenated castor oil fatty acid, 33 grams of stearic acid, 2.75 grams of naphthenic acid, 30 grams of grease structure improver and 801 grams of naphthenic base oil are added to the reactor, heated to 80-85°C, dissolve 29 grams of lithium hydroxide with five times the water to prepare an alkaline solution. Add lye to the reaction kettle at 80-85°C, heat up to 100-115°C for saponification reaction, and control the reaction time at 60-80 minutes; after the saponification reaction, raise the temperature to 140°C to drain water, and control the time at 20-30 minutes. Sampling to measure free acid-base, controlled at 0.04-0.15% NaOH, after the free acid-base is within the control range, rapidly raise...

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Abstract

The invention relates to a special ultralow-temperature grease for casters and a preparation method of the special ultralow-temperature grease. The special ultralow-temperature grease comprises the raw materials of 85-90 percent of base oil and 10-15 percent of a thickening agent by mass, and 1 percent of a grease structural improver, 0.5 percent of an anti-oxidant and 0.5 percent of a rust inhibitor are added into the raw materials. The grease prepared from naphthenic base oil has an ultralow application temperature and a relatively long service life, and tests on racks of caster manufacturing plants show that the grease has excellent low-temperature start performance, low-temperature working performance and oil separation resistance and favorable rustproof performance. The special ultralow-temperature grease for the casters has the ultralow application temperature (50 DEG C below zero), the relatively long service life and the relatively low production cost and can completely meet the application requirements of the casters in severe cold regions.

Description

technical field [0001] The invention relates to the technical field of lubricating grease, in particular to a special lubricating grease for ultra-low temperature casters and a preparation method thereof. Background technique [0002] The simplest inventions are often the most important, and casters do exactly that. Casters are used more and more widely all over the world, and almost all walks of life cannot do without casters. Casters are mainly divided into two categories: A fixed caster fixed bracket with a single wheel, can only move in a straight line; B movable caster 360-degree steering bracket with a single wheel, can travel in any direction at will. The casters produced by some domestic caster factories are exported to Europe, America, Northern Europe, Russia and other severe cold regions. The requirements for the low temperature performance of the grease are relatively strict, and the requirements for the oil separation of the grease are also relatively strict, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10M177/00
Inventor 曾俊康军石俊峰
Owner CHINA PETROLEUM & CHEM CORP
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