High-temperature chain oil and preparation method thereof

Abstract

The invention relates to high-temperature chain oil and a preparation method thereof. The high-temperature chain oil comprises the following components in percentage by mass: 90%-98% of mixed ester, 5%-30% of polyisobutene, 0.1%-5% of an antioxidant, 0.1%-5% of an anti-wear reagent at extreme pressure and 0.001%-0.01% of a defoaming agent. The high-temperature chain oil composition is suitable for being used at high temperature, has excellent high-temperature performance, is free of carbon deposition residues after long-time working at high temperature and low in evaporation loss rate, and is easy to decompose and environment-friendly.

Description

Technical Field

[0001] The invention relates to a high-temperature chain oil and a preparation method thereof, which are used for precision instruments, mechanical parts under high-temperature conditions, heavy-duty high-load equipment, etc., and belong to the technical field of lubricants. Background Art

[0002] Base oil is the most important component of liquid lubricants, generally accounting for about 95% of the composition of lubricants. At present, the base oil of most lubricants is mineral oil. At present, lubricants with mineral oil as base oil have reached a very high technical level, but mineral lubricants have poor biodegradability and have adverse effects on the environment. Therefore, environmentally friendly lubricants usually do not consider using mineral oil as base oil.

[0003] Vegetable oil is the earliest lubricant base oil. Vegetable oil has excellent lubrication properties, high viscosity, non-toxicity, biodegradability and resource renewable advantages. However, vegetable oil also has some defects, such as poor oxidation stability. After chemical modification of vegetable oil, the oxidation stability of vegetable oil is improved, which provides the possibility for its application in lubricating oil.

[0004] The base fluid of biodegradable chainsaw oil is mostly vegetable oil, especially rapeseed oil. Currently, the companies that can produce biodegradable chainsaw oil mainly include Fuchs and Bechem. The chainsaw oil produced by Bechem meets the environmentally satisfactory lubricant requirements issued by the German "Blue Angel". Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a high-temperature chain oil which is suitable for use at high temperatures, has excellent high-temperature performance, has no carbon deposit residue after long-term operation at high temperatures, and has a low evaporation loss rate. The high-temperature chain oil composition of the present invention is easy to decompose and is environmentally friendly.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: A high-temperature chain oil and a preparation method thereof, wherein the components thereof are as follows by mass percentage: 90% to 98% of mixed ester, 5% to 9% of polyisobutylene, 0.1% to 5% of antioxidant, 0.1% to 5% of extreme pressure anti-wear agent, and 0.001% to 0.01% of defoaming agent.

[0007] The mixed ester is a mixture of trimethylolpropane seed oil ester and trimellitic acid fatty alcohol ester in a mass ratio of 2:1 to 1:2.

[0008] The antioxidant is a mixture of one or more of alkyl diphenylamine, phenyl a naphthylamine, thiocyanate, thiamine or hindered phenol antioxidants.

[0009] The extreme pressure anti-wear agent is one or more of dialkyl dithiocarbamate, benzotriazole derivatives and thiadiazole derivatives.

[0010] The defoaming agent is one or more of emulsified silicone oil, high carbon alcohol fatty acid ester complex, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropanolamine ether, polyoxypropylene glycerol ether, polyoxypropylene polyoxyethylene glycerol ether, and polydimethylsiloxane.

[0011] A method for preparing high temperature chain oil comprises the following steps: a), mixing the mixed esters to obtain a base oil; b) adding polyisobutylene, antioxidant, extreme pressure anti-wear agent and defoaming agent to the base oil; c) Stir the mixture obtained in step b at 70° C. for 1 h, and filter to obtain high-temperature chain oil.

[0012] Specific implementation cases.

[0013] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0014] A high-temperature chain oil has the following components in percentage by mass: 45% of trimethylolpropane oleate, 45% of trimellitic acid fatty alcohol ester, 7.8% of polyisobutylene, 0.19% of antioxidant, 1% of extreme pressure anti-wear agent, and 0.01% of defoaming agent.

[0015] A method for preparing high temperature chain oil comprises the following steps: a), mixing the mixed esters to obtain a base oil; b) adding polyisobutylene, antioxidant, extreme pressure anti-wear agent and defoaming agent to the base oil; c) Stir the mixture obtained in step b at 70° C. for 1 h, and filter to obtain high-temperature chain oil.

[0016] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that fall within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0017] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high temperature chain oil and a preparation method thereof, characterized in that: The components thereof are composed as follows by mass percentage: 90% to 98% mixed ester, 5% to 30% polyisobutylene, 0.1% to 5% antioxidant, 0.1% to 5% extreme pressure anti-wear agent, and 0.001% to 0.01% defoaming agent.

2. The high temperature chain oil according to claim 1, characterized in that: The mixed ester is a mixture of trimethylolpropane seed oil ester and trimellitic acid fatty alcohol ester in a mass ratio of 2:1 to 1:

2.

3. The high temperature chain oil according to claim 1, characterized in that: The antioxidant is a mixture of one or more of alkyl diphenylamine, phenyl a naphthylamine, thiocyanate, thiamine or hindered phenol antioxidants.

4. The high temperature chain oil according to claim 1, characterized in that: The extreme pressure anti-wear agent is one or more of dialkyl dithiocarbamate, benzotriazole derivatives and thiadiazole derivatives.

5. The high temperature chain oil according to claim 1, characterized in that: The defoaming agent is one or more of emulsified silicone oil, high carbon alcohol fatty acid ester complex, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropanolamine ether, polyoxypropylene glycerol ether, polyoxypropylene polyoxyethylene glycerol ether, and polydimethylsiloxane.

6. A method for preparing high temperature chain oil, characterized in that: The steps include: a), mixing the mixed esters to obtain a base oil; b) adding polyisobutylene, antioxidant, extreme pressure anti-wear agent and defoaming agent to the base oil; c) Stir the mixture obtained in step b at a constant temperature of 70° C. for 1 h, and filter to obtain the high-temperature chain oil.