CN105238522B - Lubricant oil composite and purposes - Google Patents

Abstract

The present invention relates to a kind of lubricant oil composite and purposes, the composition is by weight percentage, composed of the following components：A) 95~99% mineral base oil；B) 0.3~2.0% antioxidant；C) 0.02~0.1% dispersant；D) 0.1~1.0% pour-point depressant；E) 0.02~0.1% metal deactivator；F) 0.001~0.01% anti-foaming agent.The composition can be used for lubrication of the refrigerant for the refrigeration compressor of ammonia.

Description

Lubricant oil composite and purposes

Technical field

The present invention relates to a kind of lubricant oil composite and purposes.

Background technology

Refrigerator means compressor used by compression refrigeration modes, because of its use condition and compression work medium not Together, it has different from general air compressor.The working media of refrigerator is to be responsible for transmit heat times in refrigeration system The refrigerant of business.By the difference in refrigerator structure and operation principle, it is similar with air compressor, can also be divided into piston type, Several multi-forms such as screw, centrifugal.

Refrigerator oil is the special lube of refrigeration-type compression set.Be decision and influence refrigeration system refrigerating function and The important component of effect.Refrigeration compressor obtains low temperature, refrigerator during the work time, by the reduction vaporization of refrigerant It is oily then the workpiece of refrigerating plant is lubricated.Refrigerator oil plays highly important work in all kinds of refrigeration compressors With its main function includes the following aspects：Lubricating action, cooling effect and the power as capacity controlling gear.

The common fluid lubricant of refrigerator oil has mineral oil origin, synthesis type, and document CN97122040.9 discloses one kind Refrigerated machine oil composition, belongs to synthesis type refrigerator oil, is 10~15mm containing viscosity²C5~C18's of the soft wax cracking of/s Mixedαolefin godied oil.It can also include epoxy compound species stabilizer, phosphate ester based lubricant and phenol type antioxidant etc.. The oil is suitable as the refrigerator oil using fluorine chlorine hydrogen hydrocarbon as refrigerant, it is also possible to makees using fluorochlorohydrocarbon, propane iso-butane or ammonia as system The refrigerator oil of cryogen.Document CN201010578976.9 discloses a kind of refrigerated machine oil composition, with deep hydrofinishing Oily based on naphthene base crude oil and/or paraffin base mineral oil, addition accounts for 1.0~2.5% sulfur type, the phosphorous of every gram of basic weight of oil Or sulphur-phosphorous antiwear additive and account for every gram of basic weight of oil 5~25 μ g silicon type, non-silicon type or compound anti-foaming agent, it is main to use In the high power compressor of air conditioner that R22 (F-22) is refrigerant.Document CN201010578976.9 discloses one kind Refrigerated machine oil composition, including following components：1) 10-90wt% F- T synthesis lube base oil；2) 1-10wt% alkylbenzenes And/or alkylnaphthalene lube base oil；3) 5-85wt% mineral oil and/or poly- a alkene synthetic base oil oil；4) a effective amount of table Face activating agent；5) a effective amount of additive.The refrigerator oil has good intersolubility with refrigerant containing halogen, is adapted to fluorine hydrogen Hydrocarbon is the refrigerator oil of refrigerant, can be used for the refrigerator oil of fluorochlorohydrocarbon or low molecule alkane for refrigerant.

The content of the invention

An object of the present invention is to provide a kind of lubricant oil composite.The second object of the present invention is to provide the combination The purposes of thing.The lubricant oil composite possesses excellent antioxygenic property, good cryogenic property, good lubricity and with Refrigerant has good compatibility, the lubrication available for refrigerant for the refrigeration compressor of ammonia.

To realize one of goal of the invention, the technical solution that the present invention takes is as follows：A kind of lubricant oil composite, with weight hundred Divide than meter, it is composed of the following components：

A) 95~99% mineral base oil；

B) 0.3~2.0% antioxidant；

C) 0.02~0.1% dispersant；

D) 0.1~1.0% pour-point depressant；

E) 0.02~0.1% metal deactivator；

F) 0.001~0.01% anti-foaming agent；

The mineral base oil is isomerization dewaxing hydrogenated base oil or high viscosity deep refining mineral base oil；

The antioxidant is at least one of dialkyl diphenylamine or phenolic antioxidant；

The dispersant is polyisobutylene succinamide class additive；

The pour-point depressant is at least one of polymethacrylates, Poly alpha Olefins (PAO) or poly- fumarate；

The metal deactivator is benzotriazole and its derivative or at least one of thiadiazoles and its derivative；

The anti-foaming agent is poly- methyl-silicone oil or at least one of acrylate and ether copolymer.

To realize the two of goal of the invention, the technical solution that the present invention takes is as follows：The lubricant oil composite is suitable for system Cryogen is the lubrication of the refrigeration compressor of ammonia.

In the present composition, the mineral oil is isomerization dewaxing hydrogenated base oil, or high viscosity index (VI>90) depth Refined mineral oil, or more component composition.

In the present composition, the antioxidant is dialkyl diphenylamine, or αnaphthylamine, or phenolic antioxidant, or more group The mixture divided.Such as T502, T531, T535, Irganox L-135, Irganox L-57.The control of its addition 0.3~ 2.0%.As addition is too small, due antioxidant effect can not be played；As addition is excessive, oil product appearance can be caused unstable or Influence the performance of other additives.

In the present composition, the dispersant is polyisobutylene succinamide class additive, such as T154, T154A. For the control of its addition 0.02~0.1%, addition is excessive and too small can all cause under its compounding effect with other additives Drop.

In the present composition, the pour-point depressant is polymethacrylates, or Poly alpha Olefins (PAO), or poly- fumarate, or The mixture of above component.Such as Vx 1-248, T803, T882.Its addition is controlled 0.1~1.0%, when addition is too small When, the cryogenic property of oil product does not reach requirement；When addition is excessive, the cryogenic property of oil product has been not improved, and can be gone out The situation that existing pour reversion, cryogenic property decline.

In the present composition, the metal deactivator is benzotriazole and its derivative or thiadiazoles and its derivative Thing, or more component mixture, such as T551, Cuvan484, T561.Its addition is controlled 0.02~0.1%.

In the present composition, the anti-foaming agent is poly- methyl-silicone oil or acrylate and ether copolymer, or more component Mixture, such as T901, T912, T921.The control of its addition is 0.001~0.01%, and addition is too small, and can not play to have Anti- bubble effect, as addition is excessive, it is possible to oil product appearance can be influenced.

The preparation method of lubricant oil composite of the present invention, includes the following steps：

1) base oil, pour-point depressant, metal deactivator are added, 50~70 DEG C of progress heating stirrings is warming up to, maintains 0.5~1 After hour, 40~50 DEG C are cooled the temperature to；

2) other compositions are added, when stirring 1~3 is small, all dissolve transparent state to mixture.

In order to evaluate performance of this composition for refrigerator, carry out following evaluation test：

Petroleum products pour point determination method (GB/T 3535), oil product copper strip test method (GB/T5096), lubricating oil Anti-oxidative stability determination method (SH/T 0196), lubricating oil foam characteristic determination method (GB/T 12579).

Lubricant oil composite provided by the invention is mineral oil origin refrigerator oil.The suitable base oil of present invention selection and with Its compatible additive, and groped each additive types and proportioning, add dosage relatively low, obtained refrigerator oil lubricating oil group Compound, possesses excellent antioxygenic property, good cryogenic property, and has good compatibility with refrigerant, disclosure satisfy that state Mark GB/T 16630《Refrigerator oil》In L-DRA level technique index requests, suitable for refrigerant be ammonia refrigeration compressor Lubrication.

Embodiment

【Embodiment 1~3】

Add base oil, pour-point depressant, be warming up to 60 DEG C progress heating stirrings, maintain 1 it is small when after, cool the temperature to 40 DEG C； Other compositions are added, when stirring 2 is small, transparent state is all dissolved to mixture, composition of the present invention is made.Combination Thing concrete component and properties of product performance are shown in Table 1.

Table 1

Such as embodiment test result in table,【Embodiment 1~3】Acid number and sediment are smaller after oxidation, illustrate the product With excellent anti-oxidative stability, the working condition requirement for meeting refrigerator oil is fully able to.At the same time【Embodiment 1~3】Copper sheet Burn into pour point, foam characteristic result all show well, illustrate that oil product has good low temperature flow, anti-foaming property, disclosure satisfy that Basic lubricating requirement.

Claims (1)

1. a kind of lubricant oil composite is used for purposes of the refrigerant for the lubrication of the refrigeration compressor of ammonia, the lubricating oil composition Thing, it is by weight percentage, composed of the following components：

A) 95~99% mineral base oil；

B) 0.3~2.0% antioxidant；

C) 0.02~0.1% dispersant；

D) 0.1~1.0% pour-point depressant；

E) 0.02~0.1% metal deactivator；

F) 0.001~0.01% anti-foaming agent；

The mineral base oil is isomerization dewaxing hydrogenated base oil or high viscosity deep refining mineral base oil；

The antioxidant is at least one of dialkyl diphenylamine or phenolic antioxidant；

The dispersant is polyisobutylene succinamide class additive；

The pour-point depressant is at least one of polymethacrylates, Poly alpha Olefins (PAO) or poly- fumarate；

The metal deactivator is benzotriazole and its derivative or at least one of thiadiazoles and its derivative；

The anti-foaming agent is poly- methyl-silicone oil or at least one of acrylate and ether copolymer.