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Lubricating grease composition for steering ball joint and preparation method of lubricating grease composition

A lubricating grease composition and composition technology, applied in the field of lubricating grease, can solve problems such as abnormally worn metal, unsmooth steering operation, and endangering the safety of automobile driving, and achieve good high and low performance, excellent extreme pressure and anti-wear performance, and excellent anti-friction The effect of water rust resistance

Inactive Publication Date: 2014-11-26
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the lubrication is poor, abnormal wear and metal fatigue will occur between the ball joints, looseness will occur, the steering operation will not be smooth, the noise will increase, and the life will be shortened
In severe cases, it will cause incorrect steering or untimely steering, which will directly endanger the driving safety of the car.

Method used

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  • Lubricating grease composition for steering ball joint and preparation method of lubricating grease composition
  • Lubricating grease composition for steering ball joint and preparation method of lubricating grease composition
  • Lubricating grease composition for steering ball joint and preparation method of lubricating grease composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025]

[0026] (1) Mix 375g of 12-hydroxystearic acid and 1510g of polyalphaolefin synthetic oil (the kinematic viscosity at 40°C is 130mm 2 / s) into the reactor to heat up; (2) when the reactor was heated to 90°C, the aqueous solution of 41g of lithium hydroxide monohydrate and 25g of calcium hydroxide was added to the reactor for saponification reaction; (3) saponification After the end, continue to heat up, and when the temperature rises to 170°C, add 45g of diphenylamine; (4) continue to heat up, after the temperature rises to 210°C, keep the temperature constant for 10 minutes, and then add 400g of poly-α-olefin synthetic oil into the reaction kettle for cooling and cooling , then cool down naturally, and when the temperature drops below 100°C, adjust the consistency of the grease with 400g of poly-α-olefin synthetic oil; (5) After the product has a suitable consistency, add 3g of benzotriazole, dinonylnaphthalenesulfonic acid Barium 42g, sulfurized isobutylene 60g, t...

Embodiment 2

[0028]

[0029] (1) 1490g of base oil mixture prepared with 231g of 12-hydroxystearic acid, poly-α-olefin synthetic oil and refined mineral oil (40°C kinematic viscosity is 150mm 2 / s) into the reactor to heat up; (2) when the reactor was heated to 85°C, the aqueous solution of lithium hydroxide monohydrate 25g and calcium hydroxide 7.5g was added to the reactor to carry out saponification reaction; (3) Continue to heat up after saponification, when the temperature rises to 150°C, add 30g of diisooctyl diphenylamine; (4) continue to heat up, after the temperature rises to 205°C, keep the temperature constant for 10 minutes, add 500g of base oil mixture to the reaction kettle Cool down, and then cool down naturally. When the temperature drops below 100°C, adjust the grease consistency with 500g of base oil mixture; (5) After the product has a suitable consistency, add 1.5g of benzotriazole, dinonylnaphthalenesulfonic acid 28.5g of barium, 60g of sulfurized isobutylene, 30g o...

Embodiment 3

[0031]

[0032] (1) 1530g of base oil mixture prepared with 276g of 12-hydroxystearic acid, poly-α-olefin synthetic oil and refined mineral oil (the kinematic viscosity at 40°C is 170mm 2 / s) into the reactor to heat up; (2) when the reactor was heated to 80°C, the aqueous solution of 30g of lithium hydroxide monohydrate and 9g of calcium hydroxide was added to the reactor for saponification reaction; (3) saponification Continue to heat up after the end, when the temperature rises to 160°C, add 39g of diisooctyl diphenylamine; (4) continue to heat up, after the temperature rises to 200°C, keep the temperature constant for 10 minutes, add 500g of base oil mixture into the reaction kettle to process the material Cool, then cool down naturally. When the temperature drops below 100°C, adjust the grease consistency with 400g of base oil mixture; (5) After the product has a suitable consistency, add 1.5g of benzotriazole and 58.5g of barium petroleum sulfonate in sequence, Sulfur...

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Abstract

The invention discloses a lubricating grease composition for a steering ball joint and a preparation method of the lubricating grease composition. The lubricating grease composition comprises the following components in percentage by weight: 77.0%-83.0% of base oil, 7.7%-12.5% of thickening agent, 0.2%-1.5% of antioxidant, 4.0%-7.0% of extreme pressure anti-wear agent, 0.5%-2.0% of anti-rust agent and 0.5%-1.3% of tackifier. The lubricating grease composition is good in high-temperature and low-temperature performances and excellent in extreme pressure wear resistance, water resistance and rust resistance, can meet the lubricating requirements of the steering ball joint, and is especially applicable to lubricating the steel ball joints, with strict service conditions, of engineering vehicles and the like.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, in particular to a lubricating grease composition for steering ball joints and a preparation method thereof. Background technique [0002] Automobile steering mechanism is one of the important key safety parts of the automobile, which is directly related to the maneuverability, stability and safety of the automobile. The ball joint is used between the steering system of the car, the steering straight rod, the steering rocker arm and the steering knuckle arm. The ball head is composed of a metal ball stud pin and a ball stud seat, and there is a dust cover outside to ensure the dustproof and sealing of the ball stud pin. The ball head of the steering rod of the car has a large load. The ball joint suspension combines the front suspension and steering functions. It has both up and down movement and rotation, both thrust and axial force, and may also produce fretting. [0003] In order ...

Claims

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Application Information

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IPC IPC(8): C10M169/06C10M169/00C10M177/00C10N30/06C10N30/12
Inventor 李文杰张兰英周伟东高艳青
Owner CHINA PETROLEUM & CHEM CORP
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