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Lubricating oil composition for motorcycle shock absorber

A technology of lubricating oil composition and shock absorber, which is applied in the field of lubricating oil composition and lubricating oil composition of motorcycle shock absorber, which can solve the problems of poor oxidation resistance, short working life of shock absorber oil and impact on shock absorption The service life of the device, etc.

Active Publication Date: 2012-07-04
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are two main shortcomings of this product: one is that the viscosity index is generally lower than that of special motorcycle shock absorber oil, so that the rider will experience excessive changes in damping force when encountering slopes, bumps, or pits. Small, the cushioning effect on the rider is relatively small, and it is not easy to protect the safety of the rider
The second is that the natural defect of this product is that the anti-oxidation performance is relatively poor, which makes the working life of the shock absorber oil shorter and affects the service life of the shock absorber.

Method used

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  • Lubricating oil composition for motorcycle shock absorber
  • Lubricating oil composition for motorcycle shock absorber
  • Lubricating oil composition for motorcycle shock absorber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The lubricating oil composition for motorcycle shock absorbers includes: 930g mineral oil type mixed base oil, 60g containing 35% polymethacrylate concentrate as viscosity index improver, 0.2g ethylene oxide homopolymer as demulsifier 5g of alkyl zinc thiophosphate and 1g of p-cresol are used as antioxidant and anticorrosion agent, 4g of fumaric acid ester is used as pour point depressant, and 0.001g of polymethyl silicone oil is used as antifoaming agent , the total amount is about 1000g.

[0058] The lubricating oil composition of the motorcycle shock absorber of the present embodiment is prepared according to the following process steps.

[0059] 1) Place the viscosity index improver in a drying room from room temperature to 60°C for heating. After the temperature of the drying room reaches 60°C, control the heating time for 6 hours. After the viscosity index improver flows freely, place it for use.

[0060] 2) Dilute the pour point depressant with the lightest base...

Embodiment 2

[0075] The motorcycle shock absorber oil composition comprises: 950g mineral oil type mixed base oil, 40g containing 45% polymethacrylate concentrate as a viscosity index improver using 6g of zinc alkylthiophosphate and 1g of p-cresol It is used as anti-oxidant and anti-corrosion agent, 0.008g of polyol ester is used as demulsifier, 3g of fumarate is used as pour point depressant, and 0.005g of polymethicone is used as antifoaming agent, the total amount is about 1000g. The preparation method is the same as in Example 1.

[0076] The mixed base oil is produced by hydrogenation process with a kinematic viscosity of 8.237mm at 40°C 2 / s base oil, the kinematic viscosity at 40°C produced by solvent refining process is 56.30mm 2 / s base oil, the kinematic viscosity at 40°C produced by solvent refining process is 30.56mm 2 / s base oil mixture, the mixing ratio is 2:1:4, and the kinematic viscosity of the mixed base oil at 40°C is 22.81mm 2 / s, the viscosity index is 92, and the ...

Embodiment 3

[0081] In the performance of motorcycle shock absorber oil, the low temperature fluidity of the oil is the key factor. Select polymethacrylate VX1-248 from Roman and Haas Additives, polymethacrylate VX1-156 from Roman and Haas Additives, fumarate pour point depressant INF-382 from Infineum Additives, Infineum Additives Company INF-385, China Petroleum & Chemical Co., Ltd. Keweisheng Company T882, Wuxi Nanfang Additive Co., Ltd. alkylnaphthalene T801, Lanlian-Lubrizol Additive Co., Ltd. polyα-olefin T803, investigated the base oil and The relationship between the amount of pour point depressant is shown in Table 5. The data in table 5 shows that the optimum amount of pour point depressant added to the base oil selected by the motorcycle shock absorber in this embodiment is between 0.3% and 0.6%. The preparation method is the same as in Example 1. Other each component consumption is added according to the ratio in embodiment 1.

[0082] The adding amount of the pour point depr...

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Abstract

The invention provides a lubricating oil composition for a motorcycle shock absorber. The lubricating oil composition comprises the following components in percentage by weight: 1-20% of viscosity index improver, 0-1.0% of extreme-pressure antiwear agent, 0.05-1.0% of antioxidant and antiwear agent, 0.001-0.01% of demulsifier, 0.0001-0.01% of antifoaming agent, 0.05-1.4% of pour point depressant and the balance of base oil. According to the invention, the lubricating oil composition has the advantages of proper viscosity index, good viscosity-temperature performance, good low-temperature property, excellent rubber compatibility, and good corrosion resistance and oxidation resistance, and can be also used for lubricating a bicycle saddle shock absorber.

Description

technical field [0001] The invention relates to a lubricating oil composition, in particular to a lubricating oil composition used for motorcycle shock absorbers, and belongs to the technical field of lubricating oil additives. Background technique [0002] The motorcycle shock absorber is mainly a double-tube hydraulic shock absorber. The working principle of the hydraulic shock absorber is that when the frame and the axle reciprocate, the oil in the shock absorber shell will repeatedly pass through an inner cavity. Some narrow pores flow into another lumen. At this time, the friction between the hole wall and the oil and the internal friction of the liquid molecules form a damping force on the vibration, so that the vibration energy of the body and frame is converted into heat energy, which is absorbed by the oil and the shock absorber shell. [0003] The use of shock absorber lubricating oil composition can be divided into lubricating oil composition for motorcycle shock...

Claims

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Application Information

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IPC IPC(8): C10M161/00C10N30/06C10N30/10C10N30/12C10N40/00
Inventor 崔海鸥周干堂郭剑峰程贵君
Owner CHINA PETROLEUM & CHEM CORP
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