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Thermoplastic-elastomer-containing complex aluminum-based lubricating grease composition and preparation method thereof

A thermoplastic elastomer and grease composition technology, which is applied in lubricating compositions, petroleum industry, etc., can solve the problems of reduced base oil adsorption capacity, reduced colloidal structure stability, thinning and softening of complex aluminum soap, etc. Efficacy of high temperature bleed, improved stability, improved adhesion

Active Publication Date: 2015-04-22
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its adhesion to metal is average, and there will be some leakage problems in actual use.
At the same time, the composite aluminum soap will become thinner and softer at high temperature, the stability of the colloidal structure will decrease, and the adsorption capacity of the base oil will be greatly reduced. At this time, the high temperature loss will be very serious under the action of external force, which also limits the composite aluminum base lubrication. Grease is used in some harsh working conditions and needs to be improved

Method used

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  • Thermoplastic-elastomer-containing complex aluminum-based lubricating grease composition and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add 150BS (ν 100 =34.17) 500g and 500SN (ν 100 =12.18) 520g, add 15g of benzoic acid and 35g of stearic acid, mix and stir evenly, when the reaction temperature is 90-92°C, add 18g of aluminum isopropoxide trimer (purity 70%) and react for 60 minutes, add thermoplastic elastomer lubrizol 7306 14g, when the temperature rises to 110-112°C, stir at a constant temperature for 60 minutes, continue to heat up to 218-220°C, keep the temperature at a constant temperature for 10 minutes, add 500SN (ν 100 =12.18) 255g, then lowered to room temperature, and finally ground into fat with a three-roll machine. Performance see Table 1

Embodiment 2

[0031] Add 500SN (ν 100 =11.18) 650g and 150BS (ν 100 =33.92) 415g, add 16g of benzoic acid and 37g of stearic acid, mix and stir evenly, add 19g of aluminum isopropoxide trimer (purity 70%) when the reaction temperature is 94-96°C, react for 60 minutes, add thermoplastic elastomer lubrizol 7306 43g, when the temperature rises to 118-120°C, stir at a constant temperature for 60 minutes, continue to heat up to 200-202°C, keep the temperature at a constant temperature for 10 minutes, add 150BS (ν 100 =33.92) 266g, then lowered to room temperature, and finally ground into fat with a three-roll machine. Performance see table 1

Embodiment 3

[0033] Add 150BS (ν 100 =35.21) 450g and 500SN (ν 100 =10.88) 462g, add 14g of benzoic acid and 33g of stearic acid, mix and stir evenly, add 17g of aluminum isopropoxide trimer (purity 70%) when the reaction temperature is 98-100℃, react for 60 minutes, add thermoplastic elastomer lubrizol 7306 63g, when the temperature rises to 114-116°C, stir at a constant temperature for 60 minutes, continue to heat up to 190-192°C, keep the temperature at a constant temperature for 10 minutes, add 500SN (ν 100 =10.88) 228g, then lowered to room temperature, and finally ground into fat with a three-roll machine. Performance see table 1

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Abstract

The invention provides a thermoplastic-elastomer-containing complex aluminum-based lubricating grease composition and a preparation method thereof. The lubricating grease composition is prepared from the following components in parts by mass: 1-5 parts of thermoplastic elastomer, 5-15 parts of complex aluminum thickener and 80-94 parts of base oil. The preparation method comprises the following steps: adding benzoic acid and stearic acid into 80% of base oil, and uniformly stirring; when the oil temperature is 90-100 DEG C, adding aluminum isopropoxide tripolymer to carry out saponification until isopropanol in the material is completely released; adding a thermoplastic elastomer, and heating to 110-120 DEG C while stirring until the thermoplastic elastomer is completely dissolved; continuing heating the product to 190-220 DEG C, and adding the rest of base oil. The thermoplastic-elastomer-containing complex aluminum-based lubricating grease enhances the adhesiveness to metals, enhances the high-temperature colloid stability and reduces the high-temperature loss under the condition of no additive, and is suitable for use under high-temperature severe conditions.

Description

technical field [0001] The invention relates to a lubricant, specifically a composite aluminum-based grease composition containing a thermoplastic elastomer and a preparation method thereof. Background technique [0002] With the rapid development of metallurgy, mining, cement and other industries, there are more and more large-scale high-temperature equipment, so the requirements for the high-temperature characteristics of lubricating grease are getting higher and higher. There are many types of lubricating greases that can be used in high temperature conditions, including polyurea grease, calcium sulfonate grease, lithium complex grease, aluminum complex grease, etc. However, high temperature equipment generally adopts a centralized grease supply system, so for Grease pumpability requirements are high. In terms of pumpability, aluminum complex grease has an absolute lead over other greases. As a recognized high-temperature grease, composite aluminum-based grease has a hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/02C10M177/00C10N50/10C10N30/02C10N30/08
Inventor 栗志彬吴宝杰冯强高艳青董禄虎李素
Owner CHINA PETROLEUM & CHEM CORP
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