阅读说明：本技术 一种低碳足迹的环保可生物降解的不锈钢、钛合金切削油及其制备方法 (Low-carbon footprint environment-friendly biodegradable stainless steel and titanium alloy cutting oil and preparation method thereof ) 是由 张俊 范成力 丁佳 吴守敏 张露露 于 2021-08-16 设计创作，主要内容包括：本发明提供了一种低碳足迹的环保可生物降解的不锈钢、钛合金切削油,包括以下重量百分比的组分：对苯二甲酸二辛酯50％-80％、棕榈酸异辛酯5％-15％、硬脂酸异辛酯5％-15％、禾大3986聚酯1％-3％、莱茵RC37400.3％-0.8％、莱茵RC2540 1％-6％、莱茵RC2317 1％-6％。本发明还提供了一种低碳足迹的环保可生物降解的不锈钢、钛合金切削油的制备方法。本发明切削油配方采用特定的添加剂组合以及特殊的复配比例,复配之后的配方性能达到最佳,产品极压润滑性能优异,易生物降解,符合低碳环保理念。且切削油粘度较低,可减少带出量,同时保持刀具及工件的清洁,节省成本。(The invention provides environment-friendly biodegradable stainless steel and titanium alloy cutting oil with a low carbon footprint, which comprises the following components in percentage by weight: 50-80% of dioctyl terephthalate, 5-15% of isooctyl palmitate, 5-15% of isooctyl stearate, 1-3% of Dada 3986 polyester, 0.8% of Rhine RC37400.3, 25401-6% of Rhine RC 2571-6%. The invention also provides a preparation method of the low-carbon footprint environment-friendly biodegradable stainless steel and titanium alloy cutting oil. The cutting oil disclosed by the invention adopts a specific additive combination and a special compounding proportion, the performance of the compounded formula reaches the best, the extreme pressure lubricating property of the product is excellent, the biodegradation is easy, and the low-carbon environmental protection concept is met. And the viscosity of the cutting oil is lower, the carrying-out quantity can be reduced, meanwhile, the cleanness of the cutter and the workpiece is kept, and the cost is saved.)

1. The low-carbon footprint environment-friendly biodegradable stainless steel and titanium alloy cutting oil is characterized in that: the cutting oil comprises the following components: dioctyl terephthalate, isooctyl palmitate, isooctyl stearate, Dada 3986 polyester, Rhine RC3740, Rhine RC2540, and Rhine RC 2317.

2. The cutting oil according to claim 1, wherein: the cutting oil is free of mineral oil.

3. The cutting oil according to claim 1, wherein: the cutting oil does not contain chlorinated paraffin.

4. The cutting oil according to claim 1, wherein: the cutting oil comprises the following components in percentage by weight:

5. the cutting oil according to claim 1, wherein: the cutting oil comprises the following components in percentage by weight:

6. the method for producing the cutting oil according to claim 4, wherein: the method comprises the following steps:

1) the formulation of claim 4, a material to prepare a cutting oil;

2) the material was stirred well.

7. The method according to claim 6, wherein: the stirring condition is 15-90 deg.C, and the time is 80-150 min.

Technical Field

The invention belongs to the technical field of metal processing, and particularly relates to low-carbon footprint environment-friendly biodegradable stainless steel and titanium alloy cutting oil and a preparation method thereof.

Background

The cutting oil is synthesized by compounding refined base oil with additives such as vulcanized lard, vulcanized fatty acid ester, extreme pressure antiwear agent, lubricant, antirust agent, mildew-proof bactericide, antioxidant, cooling accelerator and the like in different proportions, and the product has excellent thorough protection performance on a numerical control machine tool, a cutting tool and a workpiece. The cutting oil has super-strong lubricating extreme pressure effect, effectively protects the cutter, prolongs the service life of the cutter, and can obtain extremely high workpiece precision and surface finish.

At present, mineral oil is mainly compounded with a proper amount of chlorine, sulfur and phosphorus-containing additives to prepare the cutting oil in the market, and the cutting oil has the following defects:

1. the existing cutting oil contains a large amount of mineral oil, has a degradation rate of only about 20 percent, and is not easy to biodegrade.

2. The mining and refining process of the mineral oil generates a large amount of carbon emission, generates a high carbon footprint, has poor environmental protection performance and does not accord with the current policy of carbon reduction. Mineral oil is less in source, non-renewable, poor in lubricity, large in consumption and high in harm to the environment and water due to harmful substances.

3. Large amount of chlorine-containing additive is used, and the environmental pollution is great. Usually referred to as chlorinated paraffin, an extreme pressure antiwear agent, improves the load bearing capacity of the cutting oil. Short chain (C10-13) chlorinated paraffins have been banned in the European Union because of their carcinogenic potential.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the environment-friendly biodegradable stainless steel and titanium alloy cutting oil with low carbon footprint and the preparation method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention relates to a low-carbon footprint environment-friendly biodegradable cutting oil for stainless steel and titanium alloy, which comprises the following components: dioctyl terephthalate, isooctyl palmitate, isooctyl stearate, Dada 3986 polyester, Rhine RC3740, Rhine RC2540, and Rhine RC 2317.

Still further, the cutting oil is free of mineral oil.

Further, the cutting oil does not contain chlorinated paraffin.

Still further, the cutting oil consists of the following components in percentage by weight:

still further, the cutting oil consists of the following components in percentage by weight:

the invention also provides a preparation method of the cutting oil, which comprises the following steps:

1) preparing a material of the cutting oil according to the proportion;

2) the material was stirred well.

Further, the stirring condition is that the temperature is 15-90 ℃ and the time is 80-150 min.

The invention has the beneficial effects that:

1. the cutting oil formula of the invention adopts specific additive combination and special compounding proportion, dioctyl terephthalate, isooctyl palmitate, isooctyl stearate and 3986 polyester provide an adsorption oil film on the surface of a friction pair, RC3740 is a phosphate extreme pressure agent, RC2540 and RC2317 are vulcanizing extreme pressure agents, and generate a chemical reaction film with the metal surface at high temperature, and the three synergistically act to ensure that the cutting oil provides lubrication at different temperature intervals. The formulated performance after compounding reaches the best, the extreme pressure lubricating performance of the product is excellent, the product is easy to biodegrade, and the low-carbon environmental protection concept is met.

2. In the formula, DOTP (dioctyl terephthalate) is used for replacing mineral oil which is not easy to degrade, so that the product does not contain mineral oil and other harmful substances, the degradation rate of the used DOTP is 100%, the degradation rate of the used DOTP is improved by 80% compared with that of the used mineral oil, the product has good lubricity, is easy to biodegrade, and accords with the low-carbon environmental protection concept. And a large amount of smog and oil mist can not be generated in the processing process, the cleanness and no peculiar smell of a workshop are kept, and the method is friendly to operators.

3. Compared with the carbon emission of mineral oil, the DOTP (dioctyl terephthalate) production greatly reduces the emission.

4. In the formula of the invention, the viscosities of DOTP (dioctyl terephthalate), isooctyl palmitate and isooctyl stearate are respectively 30, 8.2 and 8.5, the viscosity of the finished product is lower, and the lower the viscosity is, the smaller the amount taken away by chips and workpieces is, so that the carrying-away amount of cutting oil can be reduced, the cleanness of a cutter and the workpieces can be kept, and the cost can be saved.

Detailed Description

To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific embodiments. This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the invention to those skilled in the art, and the present invention will only be defined by the appended claims.

The invention provides an environment-friendly biodegradable stainless steel and titanium alloy cutting oil with a low carbon footprint, wherein the cutting oil comprises the following components in parts by weight:

carbon footprint: the carbon footprint in general is the total amount of greenhouse gas emissions that an individual, organization, activity or product directly or indirectly causes. Carbon footprint assessment as a sub-global warming behavior taken by advanced enterprises helps the enterprises truly understand the impact of products on climate change and thereby take relevant measures to reduce carbon emissions in the supply chain. The carbon footprint calculation method generally adopts a Life Cycle Assessment (LCA), and obtains the total carbon footprint of the product by analyzing the carbon footprint of the target product in the whole Life cycle from raw material production to product waste degradation from 'cradle to grave'.

And (3) biodegradation: degradation is caused by the action of microorganisms present in nature under conditions of nature such as soil and/or sandy soil, and/or under specific conditions such as composting conditions or anaerobic digestion conditions or in aqueous culture solutions, and is ultimately completely degraded to carbon dioxide (CO)₄) Or/and methane (CH)₄) Water (H)₂O) and mineralized inorganic salts of the elements contained therein, and new biomass.

Stainless steel: an iron-based alloy containing 12% or more of chromium is called stainless steel. The corrosion resistance of stainless steel decreases with increasing carbon content, so most stainless steels contain less carbon up to 1.2%, and some steels contain even less than 0.03% (e.g. 00Cr 12). The main alloying element in stainless steel is Cr (chromium), and the steel has corrosion resistance only when the Cr content reaches a certain value. Therefore, stainless steels generally have a Cr (chromium) content of at least 10.5%. The stainless steel further contains elements such as Ni, Ti, Mn, N, Nb, Mo, Si, Cu, etc.

Titanium alloy: alloys based on titanium with other alloying elements added are known as titanium alloys. At room temperature, titanium alloys have three matrix structures, and the titanium alloys are classified into the following three types: alpha alloys, alpha + beta alloys, and beta alloys. China is represented by TA, TC and TB, respectively. The alpha titanium alloy is a single-phase alloy composed of alpha-phase solid solution, is alpha-phase at normal temperature or higher practical application temperature, has stable structure, higher wear resistance than pure titanium and strong oxidation resistance. At 500-600 deg.c, the strength and creep resistance are maintained, but heat treatment strengthening is impossible and the room temperature strength is not high. The beta titanium alloy is a single-phase alloy consisting of beta phase solid solution, has higher strength without heat treatment, is further strengthened after quenching and aging, and has the room temperature strength of 1372-1666 MPa; but has poor thermal stability and is not suitable for use at high temperature. The alpha + beta titanium alloy is a two-phase alloy, has good comprehensive performance, good structural stability, good toughness, plasticity and high-temperature deformation performance, can be better subjected to hot-press processing, and can be quenched and aged to strengthen the alloy. The strength after heat treatment is improved by 50 to 100 percent compared with the annealing state; high-temperature strength, can work for a long time at the temperature of 400-500 ℃, and has thermal stability inferior to that of alpha titanium alloy. The most common of the three titanium alloys are the alpha titanium alloy and the alpha + beta titanium alloy; the alpha titanium alloy has the best machinability, the alpha + beta titanium alloy is the second best, and the beta titanium alloy is the worst.

The cutting oil is suitable for processing stainless steel and titanium alloy materials, and comprises the following components: dioctyl terephthalate, isooctyl palmitate, isooctyl stearate, Dada 3986 polyester, Rhine RC3740, Rhine RC2540, and Rhine RC 2317.

Further, the cutting oil does not contain mineral oil.

Further, the cutting oil does not contain chlorinated paraffin.

Preferably, the cutting oil consists of the following components in percentage by weight:

50-80% of dioctyl terephthalate, 5-15% of isooctyl palmitate, 5-15% of isooctyl stearate, 1-3% of Dada 3986 polyester, 0.8% of Rhine RC37400.3, 25401-6% of Rhine RC 2571-6%.

Example 1:

70% of dioctyl terephthalate, 12% of isooctyl palmitate, 6.4% of isooctyl stearate, 1% of Dacron 3986 polyester, 37400.6% of Rhine RC, 25404% of Rhine RC, 23176% of Rhine RC.

Example 2:

54.5% of dioctyl terephthalate, 15% of isooctyl palmitate, 15% of isooctyl stearate, 3% of Dacron 3986 polyester, 37400.5% of Rhine RC, 25406% of Rhine RC and 23176% of Rhine RC.

Example 3:

80% of dioctyl terephthalate, 5% of isooctyl palmitate, 5% of isooctyl stearate, 3% of Dada 3986 polyester, 37400.5% of Rhine RC, 25403% of Rhine RC and 23173.5% of Rhine RC.

The basic information of the chemical additive is as follows, and the chemical additive can be purchased from commercial sources:

DOTP (dioctyl terephthalate): the molecular formula is as follows: c₂₄H₃₈O₄For polyvinyl chloride (PVC) plasticsThe primary plasticizer has excellent performance. The plasticizer has the advantages of heat resistance, cold resistance, difficult volatilization, extraction resistance, good flexibility and electrical insulation performance and the like, is used for a plasticizer of cable materials and PVC, and can also be used for producing artificial leather films. Has excellent compatibility, and can be used as plasticizer for acrylonitrile derivative, polyvinyl butyral, nitrile rubber, and cellulose nitrate. It can also be used as plasticizer, coating additive, lubricant or lubricant additive for synthetic rubber, and softener for paper. DOTP is used as a lubricant in the cutting oil of the present invention instead of mineral oils which are not readily degradable.

Isooctyl palmitate: the skin softening agent is mainly used for cosmetics, has good permeability, sweat inhibiting effect and strong skin affinity, is dry breathable oil, is widely applied to skin care products and cosmetics, is an excellent skin softening agent, has stable performance, is not easy to oxidize or generate peculiar smell, can make skin soft, tender and smooth without greasy feeling, has good permeability, and is commonly used for various skin care creams. Can be used as extender in cosmetics, binder for powder cosmetics and good solvent for pigment in color cosmetics. It is often used in foundation cream, sunscreen, eye shadow, lipstick, mascara, etc. Can also be used as softener and dispersant, and can be applied in formula of hair cream, bath lotion, etc. In the cutting oil, isooctyl palmitate forms an adsorption film on the surface of stainless steel and titanium alloy to play a role in lubrication.

Isooctyl stearate: the product is nontoxic and tasteless, has good permeability, fluidity, thixotropy, spreadability and smoothness, and has the function of increasing luster. Has the function of softening and moistening skin; compared with isopropyl ester, the prepared cosmetic has the advantages of finer appearance, good luster, better thixotropy, air and water permeability, softness and safety. The product has lower freezing point, and is more convenient to produce and operate in winter than IPP. The product has effects of resisting enzyme decomposition and resisting oxidation. The product has good compatibility with other cosmetic components. Can be used as solvent for pigment, vitamins, antiseptic, etc. In the cutting oil, isooctyl stearate forms an adsorption film on the surface of stainless steel and titanium alloy to play a role in lubrication.

Standing grain 3986 polyester: prilube 3986 is particularly suitable for pure oil type metal processing oil, and has excellent compatibility with mineral oil and traditional extreme pressure agent and antiwear agent. The extreme pressure performance of Priolube 3986 is extremely beneficial to improving the bearing capacity of oil in the oil without other extreme pressure agents and antiwear agents. It is because of its extreme pressure properties that it has been used in formulations that require the absence of chlorine, sulfur, phosphorus and other active ingredients to enhance extreme pressure properties. The Prilube 3986 has excellent synergistic effect with other extreme pressure antiwear agents. Using Prilube 3986 in combination with a phosphorus-containing additive or with a sulphur-containing additive, it is possible to formulate the following formulation: comparable to or even exceeding chlorinated paraffins. Performance comparable to or better than the performance of formulations containing only phosphate esters or sulfur-containing extreme pressure agents. Priolube 3986 can be used in aqueous metalworking fluids, is easily emulsified with conventional petroleum sulfonate and alkoxy ester emulsifiers, and does not require special emulsification techniques. In the emulsion, the extreme pressure agent can obtain the same extreme pressure performance as that in the absolute oil. The Prilube 3986 in the cutting oil has a lubricating effect, the viscosity and the molecular weight of the cutting oil are far higher than those of conventional esters, and the strength of a formed adsorption film is higher.

Rhine RC 3740: the RC3740 amine phosphate has good oil solubility, rubber swelling property, emulsification resistance, corrosion resistance, abrasion resistance and high-pressure load capacity; as a multifunctional additive, the amine phosphate salt can reduce the dosage of an anti-emulsifier and an antirust agent, has better tribological properties, and can form a thicker boundary lubricating film especially at higher temperature. Wherein ammonium ions as counter cations promote an increase in phosphate boundary lubricant film thickness.

Rhinestone RC 2540: RC2540 is a low-odor, highly active sulfurized olefin-based extreme pressure additive having a high sulfur content and a high active sulfur content, which is soluble in mineral and synthetic oils (polyethylene glycol and polyalphaolefin), exhibits excellent reactivity with metals even at a relatively low temperature, is advantageous for production blending processes and has stability in storage at low temperatures due to its low viscosity.

Rhinestone RC 2317: RC2317 is a light, nearly odorless, low viscosity methyl sulfide. It is used for blending metal processing oil for cutting operation. Because the low-viscosity Additin RC2317 is an ideal metal processing oil suitable additive, such as deep hole drilling and honing oil, the flushing effect is good.

In the invention, RC3740 is neutral ammonium phosphate, RC2540 is sulfurized olefin and RC2317 sulfurized ester, one is used singly, the PB or PD value of the compound cannot achieve good effect at the same time, and the compound use can enhance the lubricating property of the cutting oil.

The cutting oil of the above example 1 was prepared by the preparation method of the present invention, and the specific process was as follows:

the materials were prepared according to the ratio of dioctyl terephthalate 70%, isooctyl palmitate 12%, isooctyl stearate 6.4%, Dacron 3986 polyester 1%, Rhine RC 37400.6%, Rhine RC 25404%, and Rhine RC 23176%, and the above materials were mixed and stirred uniformly.

Product comparative experiment

Two types of common cutting oil in the market are taken to be compared with the cutting oil in the embodiment 1 of the invention, and the comparison data is as follows:

the results show that: the cutting oil has excellent extreme pressure lubricating performance and can be suitable for processing of various different harsh processes.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.