Copper rolling oil and use thereof

Abstract

Disclosed is a copper rolling oil, comprising the following components: base oil, long-chain fatty acid ester, compound of formula (1), long-chain fatty alcohol, diisooctyl sebacate, dimercaptothiadiazole. In addition, the use of the copper rolling oil for copper and copper alloy rolling is also disclosed. The copper rolling oil of the present application has better friction performance and corrosion resistance; and the copper material using the copper rolling oil has very high surface brightness.

Description

Technical Field

[0001] This invention belongs to the field of lubricating materials technology; it relates to a copper rolling oil and its uses. Background Technology

[0002] In the copper processing industry, copper finishing rolling is a crucial process before finished products are produced. With the continuous improvement of rolling mill technology and customer requirements, the demands on production efficiency, equipment wear and tear, and the quality of sheet metal products during the rolling process are also increasing. Process lubrication in the processing of copper and copper alloys is receiving increasing attention as a significant factor affecting product quality.

[0003] The functional additives used for process lubrication during rolling are mainly copper and copper alloy rolling oils. Copper oils typically use highly refined base oils, combined with a variety of effective additives, and are designed for lubrication and cooling by considering parameters such as viscosity, lubrication level, anti-wear properties, oxidation stability, and annealing detergency. This effectively ensures good lubrication and cooling capabilities, resulting in a bright surface with minimal residue after rolling, a long product life, and meeting the process lubrication requirements of copper finishing rolling.

[0004] Chinese patent application CN102660357A discloses a rolling oil for copper foil and its preparation method. The method involves sequentially adding N5 machine oil, butyl stearate, dodecyl alcohol, nitrogen-containing borate ester, fatty alcohol polyethylene glycol phosphate, sodium petroleum sulfonate, and benzotriazole. The mixture is placed in a reactor at a speed of 80-120 rpm and heated and stirred. When the temperature reaches 80°C, it is maintained at this temperature and stirred continuously for 30 minutes. Heating is then stopped, and stirring continues until room temperature, resulting in a transparent and homogeneous oil, which is the desired rolling oil. Copper foil lubricated with this rolling oil can achieve a minimum rollable thickness of 25 μm, exhibits high surface smoothness, long corrosion resistance, and excellent annealing cleanliness.

[0005] Chinese patent application CN104450062A discloses a copper strip rolling oil, composed of the following components in parts by weight: 5-6 parts palm oil, 0.2-0.4 parts sodium dodecyl sulfate, 0.8-1.2 parts sorbitol, 0.2-0.4 parts glycerin, 0.2-0.3 parts calcium silicate, 0.2-0.3 parts diethanolamide laurate, 0.1-0.2 parts sodium sulfate, 0.2-0.4 parts polyacrylamide, 0.3-0.5 parts sodium tripolyphosphate, 0.2-0.4 parts sodium borate, and 0.1-0.3 parts butyl stearate. The copper strip rolled with this oil has high gloss, no scratches, and good lubrication performance; moreover, the preparation method is simple and suitable for widespread use.

[0006] Chinese patent application CN107674729A discloses a method for preparing copper rolling oil using monomeric acid as raw material, comprising: adding monomeric acid and low alkyl alcohol into an esterification reactor, stirring and reacting; stopping the addition of low alkyl alcohol when the acid value of the material drops below 2 mg KOH / g, adjusting the pressure and temperature, and distilling off the low alkyl alcohol to obtain monomeric acid ester; adding the monomeric acid ester into an emulsification reactor, adding paraffin oil, sodium alkyl sulfonate, and emulsifier, purging with nitrogen, adjusting the temperature and pressure and stirring, then sequentially adding dispersant, anti-wear agent, hydrogen peroxide, and antioxidant; after stirring, reducing the pressure to remove water vapor; stopping the reaction when the pressure drops to 0.03 MPa; and obtaining the copper rolling oil after cooling.

[0007] However, existing copper rolling oils still suffer from insufficient friction and corrosion resistance. Furthermore, current copper materials require very high surface gloss, a requirement that traditional copper rolling oils struggle to meet. Summary of the Invention

[0008] The purpose of this invention is to provide a copper rolling oil and its applications. Compared with existing technologies, it offers better friction and corrosion resistance; furthermore, copper materials using this copper rolling oil exhibit high surface gloss.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a copper rolling oil, wherein the copper rolling oil comprises the following components:

[0010]

[0011]

[0012] The structural formula of compound (1) is as follows:

[0013]

[0014] R1 is selected from hydrogen atom, C 1- C 10 Alkyl and C 1- C 10 Alkyl group; n represents an integer from 0 to 4; X represents CH, N, and P atoms;

[0015] R2 is selected from C 14-22 Alkyl and C 14-22 alkenyl;

[0016] R3 and R4 are each independently selected from C 2- C 10 alkyl.

[0017] Advantageously, the compound of formula (1) is selected from the following compounds of formula (2):

[0018]

[0019] R1-R4 are as defined above.

[0020] Advantageously, the compound of formula (1) is selected from the following compounds of formula (3):

[0021]

[0022] R1-R4 are as defined above.

[0023] Advantageously, the compound of formula (1) is selected from the following compounds of formula (4):

[0024]

[0025] Bu-n represents n-butyl; Od-n represents n-octadecyl.

[0026] Advantageously, the base oil is selected from base oil D100. Advantageously, the long-chain fatty acid ester is selected from butyl stearate. Advantageously, the long-chain fatty alcohol is selected from n-tetradecyl alcohol.

[0027] Advantageously, the copper rolling oil comprises the following components:

[0028] Advantageously, the copper rolling oil comprises the following components:

[0029] On the other hand, the present invention also provides the use of the aforementioned copper rolling oil in the rolling of copper and copper alloys.

[0030] Compared with the prior art, the copper rolling oil of the present invention not only has better friction performance, but also better corrosion resistance; and the copper material using the copper rolling oil has a high surface gloss. Detailed Implementation

[0031] It must be noted that, unless the context clearly specifies otherwise, as used in this specification and the appended claims, the singular forms “a,” “an,” and “the” can include one or more referents (i.e., two or more, including two).

[0032] Unless otherwise specified, numerical ranges in this invention are approximate and therefore may include values ​​outside of said range. The numerical range may be expressed in this invention as from “about” a particular value and / or to “about” another particular value. When such a range is expressed, another aspect includes from said one particular value and / or to another particular value. Similarly, when a value is expressed as an approximation using the antecedent “about,” it should be understood that said particular value forms another aspect. It should also be understood that each endpoint in a numerical range is significant in relation to and independent of another endpoint.

[0033] The reference to the weight parts of a specific element or component in the composition or article in the specification and the final claims refers to the weight relationship between that element or component and any other element or component in the composition or article, expressed in parts by weight.

[0034] In this invention, unless specifically indicated otherwise, or implied by the context or customary practice in the art, all solutions referred to herein are aqueous solutions; when the solute in the aqueous solution is a liquid, all fractions and percentages are by volume, and the volume percentage of a component is based on the total volume of the composition or product containing that component; when the solute in the aqueous solution is a solid, all fractions and percentages are by weight, and the weight percentage of a component is based on the total weight of the composition or product containing that component.

[0035] The terms “comprising,” “including,” “having,” and similar expressions used in this invention are not intended to exclude the presence of any optional components, steps, or procedures, whether or not any optional components, steps, or procedures are specifically disclosed. For the avoidance of any doubt, unless stated to the contrary, all methods claimed by using the term “comprising” may include one or more additional steps, equipment parts or components, and / or substances. In contrast, the term “consisting of” excludes any components, steps, or procedures not specifically described or enumerated. Unless otherwise stated, the term “or” refers to members listed individually and in any combination.

[0036] Furthermore, the contents of any patent or non-patent documents referenced in this invention are incorporated herein by full citation, especially regarding definitions disclosed in the relevant field (where there is no inconsistency with any definitions specifically provided herein) and common knowledge.

[0037] In this invention, unless otherwise specified, all parts are parts by weight, temperatures are expressed in °C or at ambient temperature, and pressures are at or near atmospheric pressure. Room temperature means 20-30 °C. Various variations and combinations of reaction conditions exist (e.g., component concentrations, desired solvents, solvent mixtures, temperature, pressure, and other reaction ranges) and conditions that can be used to optimize the purity and yield of the product obtained by the method. Only reasonable routine experiments are required to optimize such method conditions.

[0038] In this invention, the compounds of formulas (1)-(4) are prepared in accordance with Chinese patent application CN201710969241.0 "Hydraulic oil composition and preparation method thereof".

[0039] In this invention, the base oil D100 is from Mobil Exxsol D100; the dialkyl dithiophosphate-formaldehyde-amine condensate is from Jiangsu Boer Petroleum Additives Co., Ltd. (T305).

[0040] Example 1

[0041]

[0042]

[0043] The structural formula of compound (4) is as follows:

[0044]

[0045] The preparation method is as follows: Add each component to the reaction vessel according to the formula, stir and mix at 75-80℃ for 2 hours; stop heating and continue stirring until room temperature to obtain a colorless and transparent oil.

[0046] Comparative Example 1

[0047]

[0048] The preparation method is as follows: Add each component to the reaction vessel according to the formula, stir and mix at 75-80℃ for 2 hours; stop heating and continue stirring until room temperature to obtain a colorless and transparent oil.

[0049] Comparative Example 2

[0050]

[0051]

[0052] The preparation method is as follows: Add each component to the reaction vessel according to the formula, stir and mix at 75-80℃ for 2 hours; stop heating and continue stirring until room temperature to obtain a colorless and transparent oil.

[0053] Performance testing

[0054] The tribological properties of copper rolling oil were evaluated on an MRS-10A four-ball friction and wear tester, using GCr15 steel balls as the test material. The coefficient of friction μ and the wear scar diameter WSD (mm) were measured under the following conditions: load (196±5) N, rotation speed (1200±5) r / min, room temperature 25℃, and time 30 min. Corrosion tests were conducted under the following conditions: immersion in T2 copper sheets at 300℃ for 4 h, and the corrosion grades (1a-1b, 2a-2e, 3a-3b, 4a-4c) were determined.

[0055] The results are shown in Table 1.

[0056] Table 1

[0057] friction coefficient μ WSD (Wear Scar Diameter) Corrosion level Example 1 0.065 0.327 1a Comparative Example 1 0.073 0.581 2b Comparative Example 2 0.078 0.396 2a

[0058] Furthermore, the copper material using the copper rolling oil of Example 1 was determined to have a very high surface gloss by the reflection method.

[0059] Furthermore, it should be understood that after reading the contents of this invention, those skilled in the art can make various modifications, substitutions, deletions, corrections or adjustments to the technical solutions of this invention, and these equivalent technical solutions also fall within the scope defined by the claims of this invention.

Claims

1. The application of copper rolling oil in the rolling of copper and copper alloys, characterized in that, The copper rolling oil is composed of the following components: Base oil D100 92.8 wt%; Butyl stearate 2.7%; Compound (4) 2.3%; (4) Bu-n represents n-butyl; Od-n represents n-octadecyl; n-Tetradecyl alcohol 1.2%; Diisooctyl sebacate 0.9%; Dimercaptothiadiazole 0.1%; The preparation method is as follows: Add each component to the reaction vessel according to the formula, mix and stir at 75-85℃ for 2 hours; stop heating and continue stirring until room temperature to obtain a colorless and transparent oil.

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