阅读说明：本技术 一种全合成切削液及其制备方法 (Fully synthetic cutting fluid and preparation method thereof ) 是由 李涛 张世伟 于 2019-11-25 设计创作，主要内容包括：本发明公开了一种全合成切削液,包括按重量百分比计的以下组分：有机胺1.5%～15%,有机酸2.2%～18.7%,缓蚀剂0.1%～10%,润滑剂0～25%,表面活性剂0～2%,杀菌剂0～6%,醚0～10%,消泡剂0～1%,以及余量的水。本发明的全合成切削液适用于铜、铜合金机加工,对铜离子化倾向具有显著的抑制作用。(The invention discloses a fully synthetic cutting fluid which comprises the following components in percentage by weight: 1.5-15% of organic amine, 2.2-18.7% of organic acid, 0.1-10% of corrosion inhibitor, 0-25% of lubricant, 0-2% of surfactant, 0-6% of bactericide, 0-10% of ether, 0-1% of defoaming agent and the balance of water. The fully synthetic cutting fluid is suitable for machining of copper and copper alloy, and has a remarkable inhibiting effect on copper ionization tendency.)

1. The fully synthetic cutting fluid is characterized by comprising the following components in percentage by weight:

1.5 to 15 percent of organic amine,

2.2 to 18.7 percent of organic acid,

0.1 to 10 percent of corrosion inhibitor,

0 to 25 percent of lubricant,

0 to 2 percent of surfactant,

0 to 6 percent of bactericide,

0 to 10% of ether,

0 to 1 percent of defoaming agent,

and the balance water.

2. The fully synthetic cutting fluid according to claim 1, wherein the organic amine is selected from one or more of tetramethylhexamethylenediamine, dimethylbenzylamine, diglycolamine, and hexamethylenediamine.

3. The fully synthetic cutting fluid according to claim 1 wherein the organic acid is selected from one or more of caprylic acid, isooctanoic acid, pelargonic acid, isononanoic acid, neononanoic acid, decanoic acid, neodecanoic acid, sebacic acid, undecanedioic acid, dodecanedioic acid.

4. The fully synthetic cutting fluid according to claim 1, wherein the corrosion inhibitor is one or more selected from benzotriazole, methylbenzotriazole, mercaptobenzothiazole, naphthotriazole, dimercaptothiadiazole, and 8-hydroxyquinoline.

5. The fully synthetic cutting fluid according to claim 1, wherein the lubricant is selected from one or more of trans-block polyether, cis-block polyether, self-emulsifying ester and polyethylene glycol;

the proportion of EO to PO of the trans-block polyether is 15-85: 85-15, and the molecular weight is 1000-5000 mol/g;

the proportion of PO and EO of the cis-block polyether is 80-60: 20-40, the molecular weight is 2000-5000 mol/g;

the commercial number of the self-emulsifying ester is Priolube 3955;

the molecular weight of the polyethylene glycol is 200-1000 mol/g.

6. The fully synthetic cutting fluid of claim 1 wherein the surfactant is selected from one or more of benzalkonium chloride, dodecyltrimethylammonium chloride, cetylpyridinium chloride, polysacconium chloride, and quaternary ammonium salt-15.

7. The fully synthetic cutting fluid of claim 1, wherein the bactericide is selected from one or more of hexahydro-1, 3, 5-tris (hydroxyethyl) s-triazine, hexahydro-1, 3, 5-tris (2-hydroxypropyl) s-triazine, hexahydro-1, 3, 5-triethyls-triazine, trimethyls-triazine, N' -methylenedimorpholine, benzisothiazolin-3-one, and sodium tetraborate.

8. The fully synthetic cutting fluid according to claim 1, wherein the ether is one or more selected from the group consisting of ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, 2-methyl-2, 4-pentanediol, dipropylene glycol butyl ether, and ethylene glycol phenyl ether.

9. The fully synthetic cutting fluid according to claim 1, wherein the defoaming agent is selected from one or more of silicone emulsion and commercially available silicone emulsion;

the water is purified water or industrial tap water prepared by a filtering process.

10. The method for preparing a fully synthetic cutting fluid according to any one of claims 1 to 9, comprising the steps of: according to the weight percentage, 1.5-15% of organic amine, 2.2-18.7% of organic acid and a proper amount of water are reacted completely to be transparent under the condition of 40-70 ℃, wherein the amount of the water is 10-50% of the total amount of the organic amine and the organic acid;

and then adding the rest of water, stirring uniformly, then sequentially adding 0.1-10% of corrosion inhibitor, 0-25% of lubricant, 0-2% of surfactant and 0-10% of ether, stirring uniformly, adding 0-6% of bactericide and 0-1% of defoaming agent under the condition that the temperature is lower than 40 ℃, and continuously stirring for 20-40 min.

Technical Field

The invention relates to a fully synthetic cutting fluid, in particular to a fully synthetic cutting fluid for machining copper and copper alloy and a preparation method thereof.

Background

Parts made of pure copper (red copper) and copper alloys (brass, cupronickel, bronze and the like) are widely used in production and life, such as electric wires, cables, electrical components, transformers, printed circuits, pipeline joints, radiators and the like. In order to manufacture these parts or finished products, appropriate machining must be performed on the base material, cutting and forming are relatively common processes, and in order to ensure the quality and efficiency of the processing, appropriate process media must be used for lubrication, cooling and cleaning, so as to avoid the phenomena of chip build-up, abnormal wear, rough surface, short tool life and the like.

The process media for processing copper and copper alloy are cutting fluid, punching fluid, cleaning agent and the like, wherein the cutting fluid is the most important type. The cutting fluid can be divided into two categories of emulsified products and fully-synthetic products, the emulsified products contain mineral oil, the water diluent is in a milk white or semitransparent state, and oil drops have large particle size and have the advantage of good lubricating property; the fully synthetic product does not contain mineral oil, and the water diluent has high appearance transparency, good cooling effect and better lubricating property. Both types of products are widely used for machining of copper alloys.

At present, cutting fluids for machining of copper and copper alloys have a defect that the cutting fluids are strong in corrosion to copper, even if a plurality of corrosion inhibitors are used for protecting the copper, the copper still has a remarkable ionization tendency, the appearance of the cutting fluids is changed from the original normal appearance of milky white, cyan, water white and the like into blue, red, purple and the like, and the highest content of copper ions can reach more than 3000ppm according to detection results sampled from part of machining enterprises. Copper ions belong to heavy metals, and are extremely difficult to remove in the cutting fluid, so that the copper ions have great harm to human bodies, high treatment cost and easy serious environmental pollution.

Disclosure of Invention

The invention aims to provide a fully synthetic cutting fluid which is suitable for machining of copper and copper alloy and has a remarkable inhibiting effect on copper ionization tendency.

In order to achieve the aim, the invention provides a fully synthetic cutting fluid which comprises the following components in percentage by weight:

1.5 to 15 percent of organic amine,

2.2 to 18.7 percent of organic acid,

0.1 to 10 percent of corrosion inhibitor,

0 to 25 percent of lubricant,

0 to 2 percent of surfactant,

0 to 6 percent of bactericide,

0 to 10% of ether,

0 to 1 percent of defoaming agent,

and the balance water.

Preferably, the organic amine is selected from one or more of Tetramethylhexamethylenediamine (TMHDA), dimethylbenzylamine (BDMA), Diglycolamine (DGA) and Hexamethylenediamine (HMDA).

Preferably, the organic acid is selected from one or more of caprylic acid, isooctanoic acid, pelargonic acid, isononanoic acid, neononanoic acid, decanoic acid, neodecanoic acid, sebacic acid, undecanedioic acid and dodecanedioic acid.

Preferably, the corrosion inhibitor is one or more selected from Benzotriazole (BTA), methylbenzotriazole (TTA), Mercaptobenzothiazole (MBT), Naphthotriazole (NTA), dimercaptothiadiazole (DMTDA) and 8-hydroxyquinoline.

Preferably, the lubricant is selected from one or more of trans-block polyether, cis-block polyether, self-emulsifying ester and polyethylene glycol.

Preferably, the ratio of EO to PO of the trans-block polyether is 15-85: 85-15, and the molecular weight is 1000-5000 mol/g.

Preferably, the ratio of PO to EO of the cis-block polyether is 80-60: 20 to 40, and the molecular weight is 2000 to 5000 mol/g.

Preferably, the self-emulsifying ester is sold under the trade name Priolube 3955 (product of Croda).

Preferably, the molecular weight of the polyethylene glycol is 200-1000 mol/g.

Preferably, the surfactant is selected from one or more of benzalkonium chloride (ADBAC), Dodecyl Trimethyl Ammonium Chloride (DTAC), cetylpyridinium chloride (CPC), polysacconium chloride (WSCP) and quaternary ammonium salt-15.

Preferably, the bactericide is selected from one or more of hexahydro-1, 3, 5-tris (hydroxyethyl) s-triazine (BK), hexahydro-1, 3, 5-tris (2-hydroxypropyl) s-triazine (HPT), hexahydro-1, 3, 5-triethyl s-triazine (HTT), trimethyl s-triazine (TMT), N' -methylenedimorpholine (MBM), benzisothiazolin-3-one (BIT) and sodium tetraborate.

Preferably, the ether is one or more selected from ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, 2-methyl-2, 4-pentanediol, dipropylene glycol butyl ether and ethylene glycol phenyl ether.

Preferably, the defoaming agent is selected from one or more of silicone emulsion and silicone emulsion commercially available products.

Preferably, the water is purified water or industrial tap water prepared by a filtering process.

The invention also provides a preparation method of the fully synthetic cutting fluid, which comprises the following steps: according to the weight percentage, 1.5-15% of organic amine, 2.2-18.7% of organic acid and a proper amount of water are reacted completely to be transparent under the condition of 40-70 ℃, wherein the amount of the water is 10-50% of the total amount of the organic amine and the organic acid;

and then adding the rest of water, stirring uniformly, then sequentially adding 0.1-10% of corrosion inhibitor, 0-25% of lubricant, 0-2% of surfactant and 0-10% of ether, stirring uniformly, adding 0-6% of bactericide and 0-1% of defoaming agent under the condition that the temperature is lower than 40 ℃, and continuously stirring for 20-40 min.

The invention has the advantages and beneficial effects that: the invention provides a fully synthetic cutting fluid for machining copper and copper alloy and a preparation method thereof.

The fully synthetic cutting fluid also has excellent copper material protection, lubrication, rust prevention, biological stability and other properties.

Detailed Description

The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

The invention provides a fully synthetic cutting fluid which comprises the following components in percentage by weight:

1.5 to 15 percent of organic amine,

2.2 to 18.7 percent of organic acid,

0.1 to 10 percent of corrosion inhibitor,

0 to 25 percent of lubricant,

0 to 2 percent of surfactant,

0 to 6 percent of bactericide,

0 to 10% of ether,

0 to 1 percent of defoaming agent,

and the balance water.

The organic amine is selected from one or more of Tetramethylhexanediamine (TMHDA), dimethylbenzylamine (BDMA), Diglycolamine (DGA) and Hexamethylenediamine (HMDA).

The organic acid is one or more selected from caprylic acid, isooctanoic acid, pelargonic acid, isononanoic acid, neononanoic acid, decanoic acid, neodecanoic acid, sebacic acid, undecanedioic acid and dodecanedioic acid.

The corrosion inhibitor is selected from one or more of Benzotriazole (BTA), tolyltriazole (TTA), Mercaptobenzothiazole (MBT), Naphthotriazole (NTA), dimercaptothiadiazole (DMTDA) and 8-hydroxyquinoline.

The lubricant is selected from one or more of trans-block polyether, cis-block polyether, self-emulsifying ester and polyethylene glycol.

The proportion of EO to PO of the trans-block polyether is 15-85: 85-15, and the molecular weight is 1000-5000 mol/g.

The proportion of PO and EO of the cis-block polyether is 80-60: 20 to 40, and the molecular weight is 2000 to 5000 mol/g.

The self-emulsifying ester is sold under the trade name Priolube 3955 (product of Croda).

The molecular weight of the polyethylene glycol is 200-1000 mol/g.

The surfactant is selected from one or more of benzalkonium chloride (ADBAC), Dodecyl Trimethyl Ammonium Chloride (DTAC), cetylpyridinium chloride (CPC), polysaccharum chloride (WSCP), and quaternary ammonium salt-15.

The bactericide is selected from one or more of hexahydro-1, 3, 5-tri (hydroxyethyl) s-triazine (BK), hexahydro-1, 3, 5-tri (2-hydroxypropyl) s-triazine (HPT), hexahydro-1, 3, 5-triethyl s-triazine (HTT), trimethyl s-triazine (TMT), N' -methylenedimorpholine (MBM), benzisothiazolin-3-one (BIT) and sodium tetraborate.

The ether is selected from one or more of ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, 2-methyl-2, 4-pentanediol, dipropylene glycol butyl ether and ethylene glycol phenyl ether.

The defoaming agent is selected from one or more of emulsified silicone oil and emulsified siloxane commercial products.

The water is purified water or industrial tap water prepared by a filtering process.

The invention also provides a preparation method of the fully synthetic cutting fluid, which comprises the following steps: according to the weight percentage, 1.5-15% of organic amine, 2.2-18.7% of organic acid and a proper amount of water are reacted completely to be transparent under the condition of 40-70 ℃, wherein the amount of the water is 10-50% of the total amount of the organic amine and the organic acid;

and then adding the rest of water, stirring uniformly, then sequentially adding 0.1-10% of corrosion inhibitor, 0-25% of lubricant, 0-2% of surfactant and 0-10% of ether, stirring uniformly, adding 0-6% of bactericide and 0-1% of defoaming agent under the condition that the temperature is lower than 40 ℃, and continuously stirring for 20-40 min.

The specific embodiment of the invention is as follows:

the formula of the fully synthetic cutting fluid is shown in the following table:

the fully synthetic cutting fluid of the embodiment has excellent copper material protection, lubrication, rust prevention, biological stability and other properties.

The technical indexes of the fully synthetic cutting fluid in the embodiment are shown in the following table:

compared with the corrosion inhibition performance of a commercially available copper material cutting fluid:

type of medium	This example	Commercial product A	Commercial product B
				Cu ion content (ppm)	15	571	310

The test method comprises the following steps: diluting a sample to 5% concentration by using pure water, placing 50g of the diluent in a 100mL measuring cylinder with a plug, then adding 1g of red copper powder (200 meshes of a lower material) and 1g of brass powder (200 meshes of a lower material), uniformly mixing, standing in an environment with the temperature of 20-25 ℃, sampling the diluent after 48 hours, and detecting the content of copper ions in the diluent by using an ICP method.

The comparison proves the superior performance of the fully synthetic cutting fluid for protecting copper materials in the processing application of copper and copper alloy.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.