Biodegradable stern shaft oil composition

Abstract

The invention discloses a biodegradable stern shaft oil composition, and particularly relates to the field of marine oil, the lubricating oil composition is composed of base oil and additives, the base oil comprises 90%-100% of ester base oil, the additives comprise 0.1%-1.0% of an antioxidant, 0.1%-1.0% of an anti-wear reagent at extreme pressure, 0.1%-0.5% of an anti-rust agent, 0.1%-0.5% of an anti-foaming agent, 0.1%-0.5% of a demulsifier and 0.1%-0.5% of a metal deactivator, the base oil comprises polyol ester and complex ester, and the base oil mainly considers biodegradability and tends to have good biodegradability. The biodegradable plastic has excellent and rapid biodegradability, and the influence on the environment is reduced; the toxicity is low, and the harm to marine organisms is greatly reduced; non-biological accumulation is achieved, and accumulation of marine organisms is reduced to the maximum extent; meanwhile, excellent bearing capacity and wear resistance are achieved, under the working condition of ship rotation or impact load, the bearing capacity under the condition of high oil film pressure is improved, wear is reduced to the maximum extent, and smooth operation of equipment is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of marine oil, and more particularly to a biodegradable stern oil composition. Background Art

[0002] Steam turbine is a kind of power machine that converts heat energy into mechanical energy. With the increasingly stringent environmental regulations, more and more countries explicitly require the use of biodegradable lubricants in environmentally sensitive areas, such as forests, water sources, and mines. In some waters, it is required that the oil used in equipment that may come into contact with seawater on commercial ships larger than 79 feet must be a biodegradable product, including the ship stern oil used in the stern tube. In order to meet market demand, it is imperative to develop environmentally friendly biodegradable stern oils. Therefore, a biodegradable stern oil composition is now proposed. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a biodegradable stern oil composition, which has excellent biodegradability and extremely low aquatic toxicity and accumulation, and meets the German Blue Angel environmental protection label certification requirements.

[0004] To achieve the above object, the present invention provides the following technical solution: a biodegradable stern oil composition, comprising a lubricating oil composition, characterized in that: the lubricating oil composition is composed of a base oil and an additive, the base oil comprises 90% to 100% of an ester base oil; the additives comprise 0.1% to 1.0% of an antioxidant, 0.1% to 1.0% of an extreme pressure anti-wear agent, 0.1% to 0.5% of a rust inhibitor, 0.1% to 0.5% of an anti-foaming agent, 0.1% to 0.5% of a demulsifier, and 0.1% to 0.5% of a metal deactivator;

[0005] The base oil includes polyol ester, complex ester, and the base oil mainly considers biodegradability, and tends to be a base oil with good biodegradability.

[0006] Preferably, the antioxidant comprises a phenolic antioxidant, an amine antioxidant; the phenolic antioxidant comprises 2-tert-butylphenol; the amine antioxidant comprises phenyl-α-naphthylamine, or diphenylamine, including nonylated diphenylamine; or any combination thereof.

[0007] Preferably, the extreme pressure antiwear agent comprises alkylated triphenylthiophosphate, dialkyl dithiophosphate derivatives, a mixture of phosphate ammonium salt and nonylamine phosphate salt, or any combination thereof.

[0008] Preferably, the rust inhibitor comprises neutral calcium alkylnaphthalene sulfonate, amino acid derivatives, or alkenyl succinic acid half ester, or any combination thereof.

[0009] Preferably, the metal deactivator can be selected from benzotriazole derivatives or thiadiazole derivatives. These metal deactivator molecules have good oil solubility, can prevent organic acids from corroding the metal surface, and can react with metal ions to form complexes into inert substances, causing them to lose their catalytic oxidation effect.

[0010] Preferably, the demulsifier can be selected from nonionic surfactants or polyoxypropylene derivatives. These demulsifiers have excellent anti-emulsification properties and anti-foaming properties.

[0011] Preferably, the defoaming agent is a non-silicon acrylate copolymer.

[0012] The invention also includes a method for preparing a biodegradable stern oil composition, the specific steps of which are:

[0013] Take 15 kg of base oil and add it into the blending kettle, heat it to 60°C, then add 7.5 g of alkenyl succinic acid half ester, 7.5 g of neutral alkyl naphthalene sulfonate calcium, 15 g of nonylated diphenylamine, 15 g of high molecular weight phenol-type antioxidant, 30 g of dialkyl dithiophosphate derivative, 45 g of alkylated triphenylthiophosphate, 1.5 g of block copolymer, 3 g of methylbenzotriazole derivative, and 30 g of acrylate copolymer into the kettle in sequence, stir at a constant temperature of 60°C for 2 hours to obtain a biodegradable stern oil mixture.

[0014] The beneficial effects of the present invention are:

[0015] A biodegradable stern oil composition, compared with existing mineral oils, has excellent rapid biodegradability, reducing the impact on the environment; low toxicity, greatly reducing the harm to marine life; non-biological accumulation, minimizing the accumulation of marine life; and excellent load-bearing capacity and anti-wear performance. Under conditions of ship rotation or impact load, the load-bearing capacity under high oil film pressure conditions is improved, wear is minimized, and smooth operation of equipment is ensured. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0017] Example 1

[0018] Example 1 discloses a biodegradable stern oil composition, comprising the following components in specific weight amounts:

[0019] Base oil: trimethylolpropane complex ester 15kg;

[0020] Rust remover: 7.5g alkenyl succinic acid half ester, 7.5g neutral alkyl naphthalene sulfonate calcium;

[0021] Antioxidant: nonylated diphenylamine 15g, high molecular weight phenol antioxidant 15g;

[0022] Extreme pressure anti-wear agent: dialkyl dithiophosphate derivative 30g, alkylated triphenylthiophosphate 45g;

[0023] Defoaming agent: block copolymer 1.5g;

[0024] Metal deactivator: 3 g of methylbenzotriazole derivative;

[0025] Demulsifier: acrylate copolymer 30g.

[0026] This embodiment also discloses a method for preparing a biodegradable stern oil composition, the specific steps of which are:

[0027] Take 15 kg of trimethylolpropane complex ester and add it into the blending kettle, heat it to 60°C, then add 7.5 g of alkenyl succinic acid half ester, 7.5 g of neutral alkyl naphthalene sulfonate calcium, 15 g of nonylated diphenylamine, 15 g of high molecular weight phenolic antioxidant, 30 g of dialkyl dithiophosphate derivative, 45 g of alkylated triphenylthiophosphate, 1.5 g of block copolymer, 3 g of methylbenzotriazole derivative, and 30 g of acrylate copolymer into the kettle in sequence, stir at a constant temperature of 60°C for 2 hours to obtain a biodegradable stern oil mixture.

[0028] Example 2

[0029] Example 2 discloses a biodegradable stern oil composition comprising the following components in specific weight amounts:

[0030] Base oil: trimethylolpropane trioleate 15kg;

[0031] Rust remover: 7.5g alkenyl succinic acid half ester, 7.5g neutral alkyl naphthalene sulfonate calcium;

[0032] Antioxidant: nonylated diphenylamine 15g, high molecular weight phenol antioxidant 15g;

[0033] Extreme pressure anti-wear agent: dialkyl dithiophosphate derivative 30g, alkylated triphenylthiophosphate 45g;

[0034] Defoaming agent: block copolymer 1.5g;

[0035] Metal deactivator: 3 g of methylbenzotriazole derivative;

[0036] Demulsifier: acrylate copolymer 30g.

[0037] This embodiment also discloses a method for preparing a biodegradable stern oil composition, the specific steps of which are:

[0038] Take 15 kg of trimethylolpropane trioleate and add it into the blending kettle, heat it to 60°C, then add 7.5 g of alkenyl succinic acid half ester, 7.5 g of neutral alkyl calcium naphthalene sulfonate, 15 g of nonylated diphenylamine, 15 g of high molecular weight phenolic antioxidant, 30 g of dialkyl dithiophosphate derivative, 30 g of alkylated triphenylthiophosphate, 1.5 g of block copolymer, 3 g of methylbenzotriazole derivative, and 30 g of acrylate copolymer into the kettle in sequence, and stir at a constant temperature of 60°C for 2 hours to obtain a biodegradable stern oil mixture.

[0039] Example 3

[0040] Example 3 discloses a biodegradable stern oil composition comprising the following components in specific weight amounts:

[0041] Base oil: saturated polyol ester 15kg;

[0042] Rust remover: 7.5g alkenyl succinic acid half ester, 7.5g neutral alkyl naphthalene sulfonate calcium;

[0043] Antioxidant: nonylated diphenylamine 15g, high molecular weight phenol antioxidant 15g;

[0044] Extreme pressure anti-wear agent: dialkyl dithiophosphate derivative 30g, alkylated triphenylthiophosphate 45g;

[0045] Defoaming agent: block copolymer 1.5g;

[0046] Metal deactivator: 3 g of methylbenzotriazole derivative;

[0047] Demulsifier: acrylate copolymer 30g.

[0048] This embodiment also discloses a method for preparing a biodegradable stern oil composition, the specific steps of which are:

[0049] 15 kg of saturated polyol ester was added into a blending kettle and heated to 60°C. Then 7.5 g of alkenyl succinic acid half ester, 7.5 g of neutral alkyl naphthalene sulfonate calcium, 15 g of nonylated diphenylamine, 15 g of high molecular weight phenolic antioxidant, 30 g of dialkyl dithiophosphate derivative, 30 g of alkylated triphenylthiophosphate, 1.5 g of block copolymer, 3 g of methylbenzotriazole derivative and 30 g of acrylate copolymer were added into the kettle in sequence. The mixture was stirred at a constant temperature of 60°C for 2 hours to obtain a biodegradable stern oil mixture.

[0050] Example 4

[0051] Example 4 discloses a biodegradable stern oil composition comprising the following components in specific weight amounts:

[0052] Base oil: pentaerythritol complex ester 15kg;

[0053] Rust remover: 7.5g alkenyl succinic acid half ester, 7.5g neutral alkyl naphthalene sulfonate calcium;

[0054] Antioxidant: nonylated diphenylamine 15g, high molecular weight phenol antioxidant 15g;

[0055] Extreme pressure anti-wear agent: dialkyl dithiophosphate derivative 30g, alkylated triphenylthiophosphate 45g;

[0056] Defoaming agent: block copolymer 1.5g;

[0057] Metal deactivator: 3 g of methylbenzotriazole derivative;

[0058] Demulsifier: acrylate copolymer 30g.

[0059] This embodiment also discloses a method for preparing a biodegradable stern oil composition, the specific steps of which are:

[0060] Take 15 kg of pentaerythritol complex ester and add it into the blending kettle, heat it to 60°C, then add 7.5 g of alkenyl succinic acid half ester, 7.5 g of neutral alkyl naphthalene sulfonate calcium, 15 g of nonylated diphenylamine, 15 g of high molecular weight phenolic antioxidant, 30 g of dialkyl dithiophosphate derivative, 30 g of alkylated triphenylthiophosphate, 1.5 g of block copolymer, 3 g of methylbenzotriazole derivative, and 30 g of acrylate copolymer into the kettle in sequence, stir at a constant temperature of 60°C for 2 hours to obtain a biodegradable stern oil mixture.

[0061] The performance of the products prepared in Examples 1-4 of the present invention was measured, and the test results are shown in the following table

[0062]

[0063]

[0064] From the test results of the blended lubricating oils of Examples 1-4, it can be seen that the products have excellent load-bearing capacity and can meet the performance requirements of the stern shaft under extreme working conditions; the products have excellent biodegradability, extremely low aquatic toxicity and bioaccumulation, and meet the requirements of environmental protection label certification.

[0065] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0067] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A biodegradable stern oil composition, comprising a lubricating oil composition, characterized in that: The lubricating oil composition is composed of a base oil and additives, wherein the base oil comprises 90% to 100% of an ester base oil; the additives comprise 0.1% to 1.0% of an antioxidant, 0.1% to 1.0% of an extreme pressure anti-wear agent, 0.1% to 0.5% of a rust inhibitor, 0.1% to 0.5% of an anti-foaming agent, 0.1% to 0.5% of a demulsifier, and 0.1% to 0.5% of a metal deactivator; Wherein, the base oil includes polyol ester and complex ester.

2. The biodegradable stern oil composition according to claim 1, characterized in that: The antioxidant includes phenolic antioxidants and amine antioxidants; the phenolic antioxidants include 2-tert-butylphenol; the amine antioxidants include phenyl-α-naphthylamine, or diphenylamine, including nonylated diphenylamine; or any combination thereof.

3. The biodegradable stern oil composition according to claim 1, characterized in that: The extreme pressure anti-wear agent comprises alkylated triphenylthiophosphate, dialkyl dithiophosphate derivatives, a mixture of phosphate ammonium salt and nonylamine phosphate salt, or any combination thereof.

4. The biodegradable stern oil composition according to claim 1, characterized in that: The rust inhibitor includes neutral alkylnaphthalene sulfonate calcium, amino acid derivatives, or alkenyl succinic acid half ester, or any combination thereof.

5. The biodegradable stern oil composition according to claim 1, characterized in that: The metal deactivator can be selected from benzotriazole derivatives or thiadiazole derivatives.

6. The biodegradable stern oil composition according to claim 1, characterized in that: The demulsifier can be selected from nonionic surfactants or polyoxypropylene derivatives.

7. The biodegradable stern oil composition according to claim 1, characterized in that: The defoamer is a non-silicon type acrylate copolymer.

8. The biodegradable stern oil composition according to claim 1, characterized in that: The invention also includes a method for preparing a biodegradable stern oil composition, the specific steps of which are: Take 15 kg of base oil and add it into the blending kettle, heat it to 60°C, then add 7.5 g of alkenyl succinic acid half ester, 7.5 g of neutral alkyl naphthalene sulfonate calcium, 15 g of nonylated diphenylamine, 15 g of high molecular weight phenol-type antioxidant, 30 g of dialkyl dithiophosphate derivative, 45 g of alkylated triphenylthiophosphate, 1.5 g of block copolymer, 3 g of methylbenzotriazole derivative, and 30 g of acrylate copolymer into the kettle in sequence, stir at a constant temperature of 60°C for 2 hours to obtain a biodegradable stern oil mixture.

Images