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Composition of door closer oil

A door closer oil, oil composition technology, applied in lubricating composition, petroleum industry and other directions, can solve the problems of high shear loss rate, unsatisfactory viscosity retention ability, etc., and achieve good extreme pressure and wear resistance, high resistance The effect of grinding, high and antioxidant properties

Inactive Publication Date: 2020-01-10
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A hydraulic oil composition suitable for door closers is introduced in CN1952091 hydraulic oil composition. Although the viscosity index has been greatly improved, the shear loss rate is relatively large
CN102812114A Although the selected special base oil can have a certain biodegradability, the viscosity retention ability of the viscosity under different temperature environments is not ideal

Method used

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  • Composition of door closer oil
  • Composition of door closer oil
  • Composition of door closer oil

Examples

Experimental program
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Effect test

Embodiment 1

[0022] This embodiment provides a door closer oil composition, the door closer oil composition is composed of the following components in percentage by weight: the PMA type viscosity index agent dimethyl methacrylate whose alkyl side chain R is C14 Base (or diethyl) aminoethyl ester 17.2%, sulfurized isobutylene 2.1% with a sulfur content of 40%, benzotriazole octadecyl ammonium salt 0.32%, 2,6 di-tert-butylphenol and dioctyl diphenylamine according to 1: The compounding ratio of 2 is 0.3%, the pour point depressant polytetradecyl methacrylate is 0.35%, the anti-emulsifier ethylene glycol ester is 0.31%, methyl silicone oil is 0.005%, the base oil YU4 is 23.1%, PAO2 for the margin.

[0023] Prepared by conventional methods in the art.

Embodiment 2

[0025] This embodiment provides a door closer oil composition, the door closer oil composition is composed of the following components in percentage by weight: the PMA type viscosity index agent dimethyl methacrylate whose alkyl side chain R is C14 Base (or diethyl) amino ethyl ester 5%, sulfur content of 30% isobutylene 3.2%, benzotriazole octadecyl ammonium salt 0.05%, 2,6 di-tert-butylphenol and dioctyl diphenylamine according to 1: The ratio of 3 is 0.05%, the pour point depressant polytetradecyl methacrylate is 1.2%, the anti-emulsifier ethylene glycol ester is 0.012%, the methyl silicone oil is 0.0002%, the base oil PAO4 is 21.3%, II2 for the margin.

[0026] Prepared by conventional methods in the art.

Embodiment 3

[0028] This embodiment provides a door closer oil composition, the door closer oil composition is composed of the following components in weight percentage: PMA type viscosity index agent 2-methyl- 20% of 5-vinylpyridine, 0.8% of sulfurized isobutylene with a sulfur content of 55%, 1.1% of benzotriazole octadecyl ammonium salt, 2,6 di-tert-butylphenol and dioctyl diphenylamine in a ratio of 3:1 0.5%, pour point depressant polytetradecyl methacrylate 1.2%, anti-emulsifier ethylene glycol ester 1.0%, methyl silicone oil 0.008%, base oil S4 35.4%, NS3 the balance.

[0029] Prepared by conventional methods in the art.

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Abstract

The invention provides a composition of door closer oil, wherein the composition comprises, by weight, 5-20% of a PMA type adhesive with an alkyl side chain R of C8-C14, 0.8-3.2% of an anti-wear agentsulfurized isobutylene with a sulfur content of 30-55%, 0.05-1.1% of a friction modifier benzotriazole octadecylammonium salt, 0.05-0.5% of an antioxidant formed by compounding 2,6-di-tert-butylphenol and dioctyldiphenylamine according to a ratio of 1:3-3:1, 0.05-1.2% of a pour point depressant polytetradecyl methacrylate, 0.012-1.0% of an anti-emulsifying agent glycol ester, 0.0002-0.008% of anti-foaming agent methyl silicone oil ester, and the balance of mineral base oil and / or poly alpha olefin base oil. The composition of the invention has the most outstanding advantages of excellent viscosity-temperature performance and excellent shearing resistance, and is suitable for the fields of door closers for buildings.

Description

technical field [0001] The invention relates to the field of lubricants, in particular to a door closer oil composition, in particular to a door closer oil composition with excellent viscosity-temperature performance, anti-wear performance and shear resistance performance. Background technique [0002] The basic structure of the hydraulic door closer includes gears, support guides, return springs, throttle valve cores and seals. The door closer achieves the buffering effect through the throttling control of the internal liquid, and the door closing control can be adjusted according to human needs. Close the door smoothly, protect the door frame and door body. [0003] In order to realize the above-mentioned door closer function, the oil product needs to be able to maintain the kinematic viscosity of the oil product without significant changes during use throughout the year (the operating temperature is usually -35 ~ 45 ° C), have high fluidity, and ensure the door closer. W...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N30/02C10N30/06C10N30/10
CPCC10M169/044C10M2205/0206C10M2207/026C10M2207/281C10M2207/283C10M2209/08C10M2215/064C10M2215/221C10M2215/223C10M2219/102C10M2229/041
Inventor 李永超李万英陈惠卿汤涛付丽雪贾睿刘卜瑜桂砚楠焦玉萍张静如杜雪岭刘红王向阳龙茵
Owner CHINA PETROLEUM & CHEM CORP
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