A biodegradable high temperature chain oil

Abstract

The present invention provides a biodegradable high-temperature chain oil, the ingredients of which include: 60-80% base oil and 20-40% functional additives; the base oil is a mixture of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester; the functional additives include by weight: 20-40 parts of plasticizer, 1-3 parts of SiO2 colloidal particles, 1-2 parts of antioxidant, 0.5-1.5 parts of anti-aging agent, 7-13 parts of extreme pressure anti-wear agent, 0.05-0.5 parts of benzotriazole and 0.5-2 parts of dispersant. The present invention overcomes the above-mentioned defects of the current high-temperature chain oil by adopting the form of composite of synthetic ester and vegetable oil, while fully meeting the high-temperature working conditions, and has the advantages of excellent lubricity, good high-temperature adsorption capacity, not easy to age, extended service life, biodegradable waste oil and easy treatment.

Description

Technical Field

[0001] The invention relates to the technical field of special lubricating oils, and in particular to a biodegradable high-temperature chain oil. Background Art

[0002] With the rapid development of industries such as petrochemicals, textiles, printing and dyeing, building materials and transportation, the power and operating speed of these equipment are constantly increasing, the operating temperature of the transmission system is getting higher and higher, and the requirements for chain oil are becoming more and more stringent. High-temperature chain transmissions work in an exposed environment that experiences high and low temperatures. The operating temperature can reach above 200°C, and the lubricating oil is very easy to oxidize, so it is necessary to have high high-temperature oxidation stability and good lubricity. The smooth operation of the chain and the small wear of the chain links depend on the good lubrication effect of the chain lubrication system, especially those chains that are subjected to heavy loads and impact conditions, so the requirements for extreme pressure and wear resistance are also very high. Finally, since high-temperature chain oil is a special equipment lubricant, it has a wide range of applications in food, metallurgy, ceramics, wood processing and other fields. However, the common problem of high-temperature chain oil in China is that waste oil cannot be biodegraded, which is incompatible with the current environmental protection situation. Summary of the invention

[0003] Technical problem to be solved: In view of the above problems, the present invention provides a biodegradable high-temperature chain oil. By adopting a composite form of synthetic ester and vegetable oil, it overcomes the above-mentioned defects of the current high-temperature chain oil while fully meeting high-temperature working conditions. It has the advantages of excellent lubricity, good high-temperature adsorption capacity, not easy to age, extended service life, and waste oil can be biodegraded and easy to handle.

[0004] Technical solution: A biodegradable high-temperature chain oil, comprising, by weight percentage, 60-80% base oil and 20-40% functional additives; the base oil is a mixture of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester.

[0005] Furthermore, the functional additives include, by weight: 20 to 40 parts of plasticizer, 1 to 3 parts of SiO2 colloidal particles, 1 to 2 parts of antioxidant, 0.5 to 1.5 parts of antioxidant, 7 to 13 parts of extreme pressure and anti-wear agent, 0.05 to 0.5 parts of benzotriazole and 0.5 to 2 parts of dispersant.

[0006] Furthermore, the volume ratio of the modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester is 4:(2-3):(1-2).

[0007] Furthermore, the preparation method of the modified cottonseed oil is as follows, in parts by weight:

[0008] Step 1: dissolving 20 parts of dried cottonseed oil in 50 parts of toluene, slowly dropping 20 parts of 20 wt.% potassium hydroxide methanol solution, reacting in a water bath at 60° C., and keeping the temperature for 1 to 2 hours after the dropping is complete, washing the product to neutrality, and drying to obtain cottonseed oil methyl ester;

[0009] Step 2: Add cottonseed oil methyl ester to 50 parts of toluene, then add 3 parts of catalyst 732 cation exchange resin and 6 parts of acetic acid, slowly dropwise add 13 parts of hydrogen peroxide, keep warm at 60°C for 8 hours, separate the product, wash to neutrality, and dry to obtain epoxy cottonseed oil methyl ester;

[0010] Step 3: Add epoxidized cottonseed oil methyl ester to 50 parts of toluene, add 3 parts of catalyst 732 cation exchange resin, slowly drop 8 parts of acetic acid thereto, react at a temperature of 50°C for 6 hours, separate the product, wash to neutrality, and dry to obtain cottonseed oil alcohol;

[0011] Step 4: dissolve cottonseed alcohol and 5 parts of triethylamine in 60 parts of anhydrous ether, introduce nitrogen for 15-20 minutes, slowly drop 22vt.% dichlorodimethylsilane ether solution, react in an ice-water bath for 2 hours, and then react at 40°C for 4 hours, wash the product with saturated brine until neutral, dehydrate and dry to obtain modified cottonseed oil.

[0012] Furthermore, the plasticizer is PE ester or trimellitate.

[0013] Furthermore, the preparation method of the SiO2 colloidal particles is as follows:

[0014] Step 1: Mix ammonia water, ethanol and water to obtain 70 parts of a mixed solution containing 5.0 mol / L water, 0.5 mol / L ammonia water and ethanol, and stir at a constant temperature of 40°C and a speed of 150 r / min;

[0015] Step 2: Add 30 parts of 0.3 mol / L ethyl orthosilicate and ethanol mixed solution to react, record the change of conductivity during the reaction, terminate the reaction when the conductivity of the system no longer changes, and age for 24 hours;

[0016] Step 3: Distill to remove water, recover ethanol, and centrifuge to obtain SiO2 colloidal particles.

[0017] Furthermore, the particle size of the SiO2 colloidal particles is 150 to 200 nm.

[0018] Furthermore, the antioxidant is octyl diphenylamine and / or alkylated diphenylamine; the antioxidant is p-,p-diisooctyl diphenylamine and / or N-phenyl-α-naphthylamine; the extreme pressure anti-wear agent is one or more of tricresyl phosphate, thiophosphate complex amine salt, aminothioester and sulfided isobutylene.

[0019] Furthermore, the dispersant is boronated polyisobutylene succinimide and / or high molecular weight succinimide.

[0020] The preparation method of the above-mentioned biodegradable high-temperature chain oil is characterized in that the preparation method is as follows:

[0021] (1) mixing and stirring modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester to obtain a base oil;

[0022] (2) mixing the plasticizer, SiO2 colloidal particles, antioxidant, anti-aging agent, extreme pressure anti-wear agent, benzotriazole and dispersant uniformly to obtain a functional additive;

[0023] (3) Slowly add the functional additives into the base oil, control the temperature at 60-80°C, and stir while adding until the stirring is complete.

[0024] Beneficial effects:

[0025] 1. The present invention adopts the composite form of synthetic ester and vegetable oil, which overcomes some defects of current high-temperature chain oil while fully meeting high-temperature working conditions. It has the advantages of excellent lubricity, good high-temperature adsorption capacity, not easy to age, extended service life, biodegradable waste oil, and easy treatment.

[0026] 2. The present invention uses modified cottonseed oil. The ester group -COO- in the modified cottonseed oil molecule is a polar group. During the lubrication process, the polar group spreads and adsorbs on the surface of the metal to form a film, so that there is an oil film between the two metal surfaces in contact with each other, thereby separating the two metal surfaces. This oil film plays a role in lubrication and friction reduction.

[0027] 3. The unmodified cottonseed oil molecules in the present invention contain a large number of carbon-carbon double bonds, so that its oxidative stability is relatively poor. Therefore, the present invention modifies it by methyl esterification and then epoxidation. The carbon-carbon double bonds of the modified cottonseed oil finally obtained are reduced and the oxidative stability is improved.

[0028] 4. The SiO2 colloidal particles added in the present invention can be evenly suspended in the chain oil, and through its addition, its high temperature resistance can be greatly improved. DETAILED DESCRIPTION

[0029] The present invention proposes a biodegradable high-temperature chain oil. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention will be further described in detail with reference to the embodiments below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] Example 1

[0031] The preparation method of modified cottonseed oil is as follows, in parts by weight:

[0032] Step 1: dissolving 20 parts of dried cottonseed oil in 50 parts of toluene, slowly dropping 20 parts of 20 wt.% potassium hydroxide methanol solution, reacting in a water bath at 60° C., and keeping the temperature for 1.5 hours after the dropping is complete, washing the product to neutrality, and drying to obtain cottonseed oil methyl ester;

[0033] Step 2: Add cottonseed oil methyl ester to 50 parts of toluene, then add 3 parts of catalyst 732 cation exchange resin and 6 parts of acetic acid, slowly dropwise add 13 parts of hydrogen peroxide, keep warm at 60°C for 8 hours, separate the product, wash to neutrality, and dry to obtain epoxy cottonseed oil methyl ester;

[0034] Step 3: Add epoxidized cottonseed oil methyl ester to 50 parts of toluene, add 3 parts of catalyst 732 cation exchange resin, slowly drop 8 parts of acetic acid thereto, react at a temperature of 50°C for 6 hours, separate the product, wash to neutrality, and dry to obtain cottonseed oil alcohol;

[0035] Step 4: dissolve cottonseed alcohol and 5 parts of triethylamine in 60 parts of anhydrous ether, introduce nitrogen for 20 minutes, slowly drop 22vt.% dichlorodimethylsilane ether solution, react in an ice-water bath for 2 hours, and then react at 40°C for 4 hours, wash the product with saturated brine until neutral, dehydrate and dry to obtain modified cottonseed oil.

[0036] Example 2

[0037] The preparation method of SiO2 colloidal particles is as follows:

[0038] Step 1: Mix ammonia water, ethanol and water to obtain 70 parts of a mixed solution containing 5.0 mol / L water, 0.5 mol / L ammonia water and ethanol, and stir at a constant temperature of 40°C and a speed of 150 r / min;

[0039] Step 2: Add 30 parts of 0.3 mol / L ethyl orthosilicate and ethanol mixed solution to react, record the change of conductivity during the reaction, terminate the reaction when the conductivity of the system no longer changes, and age for 24 hours;

[0040] Step 3: Distill to remove water, recover ethanol, and centrifuge to obtain SiO2 colloidal particles.

[0041] It has been determined that the particle size of the prepared SiO2 colloidal particles is 150-200nm.

[0042] The following examples all use the modified cottonseed oil prepared in Example 1 and the SiO2 colloidal particles prepared in Example 2.

[0043] The difference between Examples 3-5 is that the ratios between the base oil and the functional additives are different, as follows:

[0044] Example 3

[0045] A biodegradable high-temperature chain oil comprises, by weight percentage, 60% base oil and 40% functional additives; the base oil is a mixture of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester in a volume ratio of 4:2.5:1.5; the functional additive comprises, by weight, 30 parts of PE ester, 2 parts of SiO2 colloidal particles, 1.5 parts of octyl diphenylamine, 1 part of p-, p-diisooctyl diphenylamine, 10 parts of tricresyl phosphate, 0.3 parts of benzotriazole and 1.5 parts of boronated polyisobutylene succinimide.

[0046] The preparation method of the above-mentioned biodegradable high-temperature chain oil is as follows:

[0047] (1) mixing and stirring modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester to obtain a base oil;

[0048] (2) PE ester, SiO2 colloidal particles, octyl diphenylamine, p-, p-diisooctyl diphenylamine, tricresyl phosphate, benzotriazole and boronated polyisobutylene succinimide are uniformly mixed to obtain a functional additive;

[0049] (3) Slowly add the functional additives into the base oil, control the temperature at 70°C, and stir while adding until the stirring is complete.

[0050] Example 4

[0051] A biodegradable high-temperature chain oil comprises, by weight percentage, 70% base oil and 30% functional additives; the base oil is a mixture of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester in a volume ratio of 4:2.5:1.5; the functional additive comprises, by weight, 30 parts of PE ester, 2 parts of SiO2 colloidal particles, 1.5 parts of octyl diphenylamine, 1 part of p-, p-diisooctyl diphenylamine, 10 parts of tricresyl phosphate, 0.3 parts of benzotriazole and 1.5 parts of boronated polyisobutylene succinimide.

[0052] The preparation method of the above-mentioned biodegradable high-temperature chain oil is as follows:

[0053] (1) mixing and stirring modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester to obtain a base oil;

[0054] (2) PE ester, SiO2 colloidal particles, octyl diphenylamine, p-, p-diisooctyl diphenylamine, tricresyl phosphate, benzotriazole and boronated polyisobutylene succinimide are uniformly mixed to obtain a functional additive;

[0055] (3) Slowly add the functional additives into the base oil, control the temperature at 70°C, and stir while adding until the stirring is complete.

[0056] Example 5

[0057] A biodegradable high-temperature chain oil comprises, by weight percentage, 80% base oil and 20% functional additives; the base oil is a mixture of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester in a volume ratio of 4:2.5:1.5; the functional additive comprises, by weight, 30 parts of PE ester, 2 parts of SiO2 colloidal particles, 1.5 parts of octyl diphenylamine, 1 part of p-, p-diisooctyl diphenylamine, 10 parts of tricresyl phosphate, 0.3 parts of benzotriazole and 1.5 parts of boronated polyisobutylene succinimide.

[0058] The preparation method of the above-mentioned biodegradable high-temperature chain oil is as follows:

[0059] (1) mixing and stirring modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester to obtain a base oil;

[0060] (2) PE ester, SiO2 colloidal particles, octyl diphenylamine, p-, p-diisooctyl diphenylamine, tricresyl phosphate, benzotriazole and boronated polyisobutylene succinimide are uniformly mixed to obtain a functional additive;

[0061] (3) Slowly add the functional additive to the base oil, control the temperature at 70°C, and stir while adding until the stirring is completed. The difference between Examples 6-14 is that the volume ratios of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester are different, as follows:

[0062] Example 6

[0063] A biodegradable high-temperature chain oil, comprising, by weight percentage: 70% base oil and 30% functional additives; the base oil is a mixture of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester in a volume ratio of 4:2:1;

[0064] The functional additives include, by weight: 30 parts of trimellitic acid ester, 2 parts of SiO2 colloidal particles, 1.5 parts of alkylated diphenylamine, 1 part of N-phenyl-α-naphthylamine, 10 parts of sulfided isobutylene, 0.4 parts of benzotriazole and 1.5 parts of high molecular weight succinimide. The preparation method of the above biodegradable high temperature chain oil is as follows:

[0065] (1) mixing and stirring modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester to obtain a base oil;

[0066] (2) uniformly mixing trimellitic acid ester, SiO2 colloidal particles, alkylated diphenylamine, N-phenyl-α-naphthylamine, isobutylene sulfide, benzotriazole and high molecular weight succinimide to obtain a functional additive;

[0067] (3) Slowly add the functional additives into the base oil, control the temperature at 70°C, and stir while adding until the stirring is complete.

[0068] Example 7

[0069] A biodegradable high-temperature chain oil, comprising, by weight percentage: 70% base oil and 30% functional additives; the base oil is a mixture of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester in a volume ratio of 4:2.5:1;

[0070] The functional additives include, by weight: 30 parts of trimellitic acid ester, 2 parts of SiO2 colloidal particles, 1.5 parts of alkylated diphenylamine, 1 part of N-phenyl-α-naphthylamine, 10 parts of sulfided isobutylene, 0.4 parts of benzotriazole and 1.5 parts of high molecular weight succinimide.

[0071] The preparation method of the above-mentioned biodegradable high-temperature chain oil is as follows:

[0072] (1) mixing and stirring modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester to obtain a base oil;

[0073] (2) uniformly mixing trimellitic acid ester, SiO2 colloidal particles, alkylated diphenylamine, N-phenyl-α-naphthylamine, isobutylene sulfide, benzotriazole and high molecular weight succinimide to obtain a functional additive;

[0074] (3) Slowly add the functional additives into the base oil, control the temperature at 70°C, and stir while adding until the stirring is complete.

[0075] Example 8

[0076] A biodegradable high-temperature chain oil, comprising, by weight percentage: 70% base oil and 30% functional additives; the base oil is a mixture of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester in a volume ratio of 4:3:1;

[0077] The functional additives include, by weight: 30 parts of trimellitic acid ester, 2 parts of SiO2 colloidal particles, 1.5 parts of alkylated diphenylamine, 1 part of N-phenyl-α-naphthylamine, 10 parts of sulfided isobutylene, 0.4 parts of benzotriazole and 1.5 parts of high molecular weight succinimide. The preparation method of the above biodegradable high temperature chain oil is as follows:

[0078] (1) mixing and stirring modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester to obtain a base oil;

[0079] (2) uniformly mixing trimellitic acid ester, SiO2 colloidal particles, alkylated diphenylamine, N-phenyl-α-naphthylamine, isobutylene sulfide, benzotriazole and high molecular weight succinimide to obtain a functional additive;

[0080] (3) Slowly add the functional additives into the base oil, control the temperature at 70°C, and stir while adding until the stirring is complete.

[0081] Example 9

[0082] A biodegradable high-temperature chain oil, comprising, by weight percentage: 70% base oil and 30% functional additives; the base oil is a mixture of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester in a volume ratio of 4:2:1.5;

[0083] The functional additives include, by weight: 30 parts of trimellitic acid ester, 2 parts of SiO2 colloidal particles, 1.5 parts of alkylated diphenylamine, 1 part of N-phenyl-α-naphthylamine, 10 parts of sulfided isobutylene, 0.4 parts of benzotriazole and 1.5 parts of high molecular weight succinimide. The preparation method of the above biodegradable high temperature chain oil is as follows:

[0084] (1) mixing and stirring modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester to obtain a base oil;

[0085] (2) uniformly mixing trimellitic acid ester, SiO2 colloidal particles, alkylated diphenylamine, N-phenyl-α-naphthylamine, isobutylene sulfide, benzotriazole and high molecular weight succinimide to obtain a functional additive;

[0086] (3) Slowly add the functional additives into the base oil, control the temperature at 70°C, and stir while adding until the stirring is complete.

[0087] Example 10

[0088] A biodegradable high-temperature chain oil, comprising, by weight percentage: 70% base oil and 30% functional additives; the base oil is a mixture of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester in a volume ratio of 4:2:2;

[0089] The functional additives include, by weight: 30 parts of trimellitic acid ester, 2 parts of SiO2 colloidal particles, 1.5 parts of alkylated diphenylamine, 1 part of N-phenyl-α-naphthylamine, 10 parts of sulfided isobutylene, 0.4 parts of benzotriazole and 1.5 parts of high molecular weight succinimide. The preparation method of the above biodegradable high temperature chain oil is as follows:

[0090] (1) mixing and stirring modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester to obtain a base oil;

[0091] (2) uniformly mixing trimellitic acid ester, SiO2 colloidal particles, alkylated diphenylamine, N-phenyl-α-naphthylamine, isobutylene sulfide, benzotriazole and high molecular weight succinimide to obtain a functional additive;

[0092] (3) Slowly add the functional additives into the base oil, control the temperature at 70°C, and stir while adding until the stirring is complete.

[0093] Embodiment 11

[0094] A biodegradable high-temperature chain oil, comprising, by weight percentage: 70% base oil and 30% functional additives; the base oil is a mixture of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester in a volume ratio of 4:2.5:1.5; the functional additives comprise, by weight: 30 parts of trimellitic acid ester, 2 parts of SiO2 colloidal particles, 1.5 parts of alkylated diphenylamine, 1 part of N-phenyl-α-naphthylamine, 10 parts of sulfided isobutylene, 0.4 parts of benzotriazole and 1.5 parts of high molecular weight succinimide. The preparation method of the above biodegradable high-temperature chain oil is as follows:

[0095] (1) mixing and stirring modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester to obtain a base oil;

[0096] (2) uniformly mixing trimellitic acid ester, SiO2 colloidal particles, alkylated diphenylamine, N-phenyl-α-naphthylamine, isobutylene sulfide, benzotriazole and high molecular weight succinimide to obtain a functional additive;

[0097] (3) Slowly add the functional additives into the base oil, control the temperature at 70°C, and stir while adding until the stirring is complete.

[0098] Example 12

[0099] A biodegradable high-temperature chain oil, comprising, by weight percentage: 70% base oil and 30% functional additives; the base oil is a mixture of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester in a volume ratio of 4:2.5:2;

[0100] The functional additives include, by weight: 30 parts of trimellitic acid ester, 2 parts of SiO2 colloidal particles, 1.5 parts of alkylated diphenylamine, 1 part of N-phenyl-α-naphthylamine, 10 parts of sulfided isobutylene, 0.4 parts of benzotriazole and 1.5 parts of high molecular weight succinimide. The preparation method of the above biodegradable high temperature chain oil is as follows:

[0101] (1) mixing and stirring modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester to obtain a base oil;

[0102] (2) uniformly mixing trimellitic acid ester, SiO2 colloidal particles, alkylated diphenylamine, N-phenyl-α-naphthylamine, isobutylene sulfide, benzotriazole and high molecular weight succinimide to obtain a functional additive;

[0103] (3) Slowly add the functional additives into the base oil, control the temperature at 70°C, and stir while adding until the stirring is complete.

[0104] Example 13

[0105] A biodegradable high-temperature chain oil, comprising, by weight percentage: 70% base oil and 30% functional additives; the base oil is a mixture of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester in a volume ratio of 4:3:1.5;

[0106] The functional additives include, by weight: 30 parts of trimellitic acid ester, 2 parts of SiO2 colloidal particles, 1.5 parts of alkylated diphenylamine, 1 part of N-phenyl-α-naphthylamine, 10 parts of sulfided isobutylene, 0.4 parts of benzotriazole and 1.5 parts of high molecular weight succinimide. The preparation method of the above biodegradable high temperature chain oil is as follows:

[0107] (1) mixing and stirring modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester to obtain a base oil;

[0108] (2) uniformly mixing trimellitic acid ester, SiO2 colloidal particles, alkylated diphenylamine, N-phenyl-α-naphthylamine, isobutylene sulfide, benzotriazole and high molecular weight succinimide to obtain a functional additive;

[0109] (3) Slowly add the functional additives into the base oil, control the temperature at 70°C, and stir while adding until the stirring is complete.

[0110] Embodiment 14

[0111] A biodegradable high-temperature chain oil, comprising, by weight percentage: 70% base oil and 30% functional additives; the base oil is a mixture of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester in a volume ratio of 4:3:2;

[0112] The functional additives include, by weight: 30 parts of trimellitic acid ester, 2 parts of SiO2 colloidal particles, 1.5 parts of alkylated diphenylamine, 1 part of N-phenyl-α-naphthylamine, 10 parts of sulfided isobutylene, 0.4 parts of benzotriazole and 1.5 parts of high molecular weight succinimide. The preparation method of the above biodegradable high temperature chain oil is as follows:

[0113] (1) mixing and stirring modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester to obtain a base oil;

[0114] (2) uniformly mixing trimellitic acid ester, SiO2 colloidal particles, alkylated diphenylamine, N-phenyl-α-naphthylamine, isobutylene sulfide, benzotriazole and high molecular weight succinimide to obtain a functional additive;

[0115] (3) Slowly add the functional additives into the base oil, control the temperature at 70°C, and stir while adding until the stirring is complete.

[0116] Comparative Example 1

[0117] The difference between this embodiment and embodiment 4 is that modified cottonseed oil is not used. Specifically:

[0118] A biodegradable high-temperature chain oil, comprising, by weight percentage: 70% base oil and 30% functional additives; the base oil is a mixture of neopentyl glycol dioleate and dipentaerythritol ester in a volume ratio of 2.5:1.5;

[0119] The functional additives include, by weight: 30 parts of PE ester, 2 parts of SiO2 colloidal particles, 1.5 parts of octyl diphenylamine, 1 part of p-, p-diisooctyl diphenylamine, 10 parts of tricresyl phosphate, 0.3 parts of benzotriazole and 1.5 parts of boronated polyisobutylene succinimide.

[0120] The preparation method of the above-mentioned biodegradable high-temperature chain oil is as follows:

[0121] (1) mixing neopentyl glycol dioleate and dipentaerythritol ester and stirring uniformly to obtain a base oil;

[0122] (2) PE ester, SiO2 colloidal particles, octyl diphenylamine, p-, p-diisooctyl diphenylamine, tricresyl phosphate, benzotriazole and boronated polyisobutylene succinimide are uniformly mixed to obtain a functional additive;

[0123] (3) Slowly add the functional additives into the base oil, control the temperature at 70°C, and stir while adding until the stirring is complete.

[0124] Comparative Example 2

[0125] The difference between this embodiment and embodiment 4 is that conventional mineral oil is used as the base oil, specifically:

[0126] A biodegradable high-temperature chain oil comprises, by weight percentage, 70% of conventional mineral oil and 30% of functional additives; the functional additives comprise, by weight, 30 parts of PE ester, 2 parts of SiO2 colloidal particles, 1.5 parts of octyl diphenylamine, 1 part of p-, p-diisooctyl diphenylamine, 10 parts of tricresyl phosphate, 0.3 parts of benzotriazole and 1.5 parts of boronated polyisobutylene succinimide.

[0127] The preparation method of the above-mentioned biodegradable high-temperature chain oil is as follows:

[0128] (1) PE ester, SiO2 colloidal particles, octyl diphenylamine, p-, p-diisooctyl diphenylamine, tricresyl phosphate, benzotriazole and boronated polyisobutylene succinimide are uniformly mixed to obtain a functional additive;

[0129] (2) Slowly add the functional additives into the conventional mineral oil, control the temperature at 70°C, and stir while adding until the stirring is complete.

[0130] Comparative Example 3

[0131] The difference between this embodiment and embodiment 4 is that SiO2 colloidal particles are not used. Specifically:

[0132] A biodegradable high-temperature chain oil comprises, by weight percentage, 70% base oil and 30% functional additives; the base oil is a mixture of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester in a volume ratio of 4:2.5:1.5; the functional additive comprises, by weight, 30 parts of PE ester, 1.5 parts of octyl diphenylamine, 1 part of p-, p-diisooctyl diphenylamine, 10 parts of tricresyl phosphate, 0.3 parts of benzotriazole and 1.5 parts of boronated polyisobutylene succinimide.

[0133] The preparation method of the above-mentioned biodegradable high-temperature chain oil is as follows:

[0134] (1) mixing and stirring modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester to obtain a base oil;

[0135] (2) PE ester, octyl diphenylamine, p-, p-diisooctyl diphenylamine, tricresyl phosphate, benzotriazole and boronated polyisobutylene succinimide are uniformly mixed to obtain a functional additive;

[0136] (3) Slowly add the functional additive to the base oil, control the temperature at 70°C, and stir while adding until the stirring is complete. The biodegradable high-temperature chain oil of this embodiment is tested for various performance indicators according to the national standard method, and the results are shown in the following Table 1-2:

[0137] Table 1 Physical and chemical properties of biodegradable high temperature chain oil

[0138]

[0139] The four-ball machine test method was used to determine P according to GB / T3142. B , P D value;

[0140] The wear spot diameter was measured using SH / T 0189;

[0141] The amount of sediment produced by oil products at 250°C was determined using an inclined plate coking simulator test.

[0142] Table 2 Lubricating properties of biodegradable high temperature chain oil

[0143]

Claims

1. A biodegradable high temperature chain oil, characterized in that: The invention comprises, by weight percentage, 60-80% base oil and 20-40% functional additives; the base oil is a mixture of modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester; The functional additives include, by weight: 20 to 40 parts of plasticizer, 1 to 3 parts of SiO2 colloidal particles, 1 to 2 parts of antioxidant, 0.5 to 1.5 parts of antioxidant, 7 to 13 parts of extreme pressure and anti-wear agent, 0.05 to 0.5 parts of benzotriazole and 0.5 to 2 parts of dispersant; The preparation method of the modified cottonseed oil is as follows, in parts by weight: Step 1: Dissolve 20 parts of dried cottonseed oil in 50 parts of toluene, slowly drop 20 parts of 20wt.% potassium hydroxide methanol solution, react in a water bath at 60°C, keep warm for 1-2 hours after the dropwise addition is complete, wash the product to neutrality, and dry to obtain cottonseed oil methyl ester; Step 2: Add cottonseed oil methyl ester to 50 parts of toluene, then add 3 parts of catalyst 732 cation exchange resin and 6 parts of acetic acid, slowly drop 13 parts of hydrogen peroxide, keep warm at 60°C for 8 hours, separate the product, wash to neutrality, and dry to obtain epoxy cottonseed oil methyl ester; Step 3: Add epoxidized cottonseed oil methyl ester to 50 parts of toluene, add 3 parts of catalyst 732 cation exchange resin, slowly drop 8 parts of acetic acid thereto, react at 50°C for 6 hours, separate the product, wash to neutrality, and dry to obtain cottonseed oil alcohol; Step 4: Dissolve cottonseed alcohol and 5 parts of triethylamine in 60 parts of anhydrous ether, introduce nitrogen for 15 to 20 minutes, slowly drop 22vt.% dichlorodimethylsilane ether solution, react in an ice-water bath for 2 hours, and then react at 40°C for 4 hours. Wash the product with saturated brine until it is neutral, dehydrate and dry to obtain modified cottonseed oil.

2. A biodegradable high temperature chain oil according to claim 1, characterized in that: The volume ratio of the modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester is 4:(2-3):(1-2).

3. A biodegradable high temperature chain oil according to claim 1, characterized in that: The plasticizer is PE ester or trimellitate.

4. A biodegradable high temperature chain oil according to claim 1, characterized in that: The preparation method of the SiO2 colloidal particles is as follows: Step 1: Mix ammonia water, ethanol and water to obtain 70 parts of a mixed solution containing 5.0 mol / L water, 0.5 mol / L ammonia water and ethanol, and stir at a constant temperature of 40°C and a speed of 150 r / min; Step 2: Add 30 parts of 0.3 mol / L ethyl orthosilicate and ethanol mixed solution to react, record the change of conductivity during the reaction, terminate the reaction when the conductivity of the system no longer changes, and age for 24 hours; Step 3: Distill to remove water, recover ethanol, and centrifuge to obtain SiO2 colloidal particles.

5. The biodegradable high temperature chain oil according to claim 1, characterized in that: The particle size of the SiO2 colloidal particles is 150-200 nm.

6. A biodegradable high temperature chain oil according to claim 1, characterized in that: The antioxidant is octyl diphenylamine and / or alkylated diphenylamine; the antioxidant is p-,p-diisooctyl diphenylamine and / or N-phenyl-α-naphthylamine; the extreme pressure anti-wear agent is one or more of tricresyl phosphate, thiophosphate complex amine salt, aminothioester and sulfided isobutylene.

7. The biodegradable high temperature chain oil according to claim 1, characterized in that: The dispersant is boronated polyisobutylene succinimide and / or high molecular weight succinimide.

8. A method for preparing a biodegradable high temperature chain oil according to any one of claims 1 to 7, characterized in that: The preparation method is as follows: (1) Modified cottonseed oil, neopentyl glycol dioleate and dipentaerythritol ester are mixed and stirred uniformly to obtain a base oil; (2) mixing the plasticizer, SiO2 colloidal particles, antioxidant, anti-aging agent, extreme pressure anti-wear agent, benzotriazole and dispersant uniformly to obtain a functional additive; (3) Slowly add the functional additives into the base oil, control the temperature at 60-80°C, and stir while adding until the stirring is complete.

Images