Micro-emulsified biodegradable metal working fluid with low carbon footprint as well as preparation method and application thereof

Abstract

The invention provides a micro-emulsified biodegradable metal working fluid with low carbon footprint, which comprises the following components in percentage by weight: 2%-6% of isopropanolamine, 1%-3% of a nano silicon anti-corrosive agent, 3%-6% of triazine polycarboxylic acid, 1%-3% of benzotriazole or methyl benzotriazole, 4%-8% of self-emulsifying ester, 4%-6% of tall oil, 30%-70% of dioctyl terephthalate, 2%-4% of Guerbet alcohol, 1%-4% of an ether carboxylic acid compounding agent, 10%-15% of cardanol, 0.2%-0.3% of potassium hydroxide and the balance of water. The invention further provides a preparation method and application of the micro-emulsified biodegradable metal working fluid with low carbon footprint. Compared with the prior art, the metal working fluid is better in lubricity, degradable, low-carbon and environment-friendly. In the formula, the dioctyl terephthalate is used for replacing mineral oil which is not easy to degrade, and the emulsifier cardanol is used for replacing the original high-grade fatty alcohol emulsifier which is not easy to degrade, so that the lubricating property is good, biodegradation is easy, and the concept of low carbon and environmental protection is met. The metal working fluid can meet the processing requirements at low concentration, and the processing requirements of various different materials can be met at the same time.

Description

technical field [0001] The invention belongs to the technical field of metal processing, and in particular relates to a micro-emulsion biodegradable metal processing fluid with low carbon footprint and a preparation method and application thereof. Background technique [0002] Metalworking processes, such as cutting, generate heat due to friction. For example, during milling, where a rotary cutting tool is used to methodically remove material from a metal workpiece and shape the metal workpiece into a final part, the contact between the milling tool and the workpiece creates friction that results in increased temperatures in the tool / workpiece contact area . When manufacturing large numbers of parts, excess heat generated during production must be controlled to protect tools and work surfaces. Uncontrolled high temperatures can soften the tool or reduce the integrity of the tool, resulting in tool failure, damage to the workpiece, or damage to the surface of the finished p...

AI Technical Summary

Problems solved by technology

[0005] 1. Existing metalworking fluids contain mineral oil, the degradation rate is only 20%, and it is not easy to biodegrade

[0006] 2. The mining and refining process of mineral oil produces a large amount of carbon emissions, resulting in a high carbon footprint, poor environmental protection, and does not comply with the current carbon reduction policy

The source of mineral oil is relatively small, non-renewable, and has poor lubricity, large consumption, and contains harmful substances that are harmful to the environment and water bodies

[0007] 3. Higher concentration must be used for high-required process, which leads to large consumption and increased cost

[0008] 4. Contains a large number of harmful substances, such as formaldehyde, dicyclohexylamine, nitrous, phenol and phenolic fungicides and VOC volatile substances

[0009] 5. Metalworking fluids containing mineral oil will produce a large amount of oil fume and oil mist during the processing, polluting the workshop environment and endangering the health of operators

[0010] 6. The emulsifier of the existing emulsified mineral oil is mainly polyether, which is not easy to degrade

[0011] 7. The applicability of the product is single, and it can only process one or two materials in copper, aluminum, magnesium, iron, steel and other materials

[0012] At present, vegetable oils such as rapeseed oil are used instead of mineral oil to prepare cutting fluids, but such vegetable oils such as rapeseed oil have disadvantages such as easy oxidation, deterioration, and short life, and cannot really replace mineral oil to achieve various metalworking fluids. performance and reduce carbon emissions

Most of its emulsifiers are fatty alcohol polyoxyethylene ether substances, which cannot be completely biodegraded, and cannot be truly degraded

Images