阅读说明：本技术 一种环保水基切削液及其制备方法 (Environment-friendly water-based cutting fluid and preparation method thereof ) 是由 何俊 于 2019-11-29 设计创作，主要内容包括：本发明属于切削加工技术领域,尤其涉及一种环保水基切削液及其制备方法。以质量百分数计,所述切削液的配方包括：润滑剂10～20％；乳化剂0.01～1％；极压剂2～5％；有机酸2～6％；有机碱6～10％；消泡剂0.01～2％；水软化剂0.02～2％；防锈剂0.01～1％；杀菌剂0.01～3％；沉降剂0.01～1％；溶剂为去离子水；消泡剂包括有机硅和炔醇类消泡剂；沉降剂包括水溶性聚丙烯酰胺和/或多乙烯多胺。本发明通过对切削液的配方进行优化设计,显著提升了其使用性能,采用本发明提供的切削液对原材料进行切削加工时,切削液表面无黑色油污、泡沫少,切削加工产生的砂浆不结块、易沉淀、不堵塞切削设备管道。(The invention belongs to the technical field of cutting processing, and particularly relates to an environment-friendly water-based cutting fluid and a preparation method thereof. The formula of the cutting fluid comprises the following components in percentage by mass: 10-20% of a lubricant; 0.01-1% of an emulsifier; 2-5% of an extreme pressure agent; 2-6% of organic acid; 6-10% of organic base; 0.01-2% of defoaming agent; 0.02-2% of a water softener; 0.01-1% of an antirust agent; 0.01-3% of a bactericide; 0.01-1% of settling agent; the solvent is deionized water; the defoaming agent comprises organosilicon and alkynol defoaming agents; the sedimentation agent comprises water-soluble polyacrylamide and/or polyethylene polyamine. The invention improves the use performance of the cutting fluid obviously by optimizing the formula of the cutting fluid, and when the cutting fluid provided by the invention is used for cutting raw materials, the surface of the cutting fluid has no black oil stain and less foam, and the mortar generated by cutting processing does not agglomerate, is easy to precipitate and does not block the pipeline of cutting equipment.)

1. The environment-friendly water-based cutting fluid comprises the following components in percentage by mass:

the solvent is deionized water;

the defoaming agent comprises an organic silicon defoaming agent and an alkynol defoaming agent;

the settling agent comprises water-soluble polyacrylamide and/or polyethylene polyamine.

2. The environmentally friendly water-based cutting fluid according to claim 1, wherein the silicone antifoaming agent is selected from dimethylsilicone oil and/or methylsilicone oil, or from antifoaming agents having a trademark AFE-1247;

the grades of the alkynol antifoaming agent comprise GT-80 and/or DF-110D.

3. The environment-friendly water-based cutting fluid according to claim 1, wherein the mass ratio of the silicone antifoaming agent to the alkynol antifoaming agent is (0.1-10): 1.

4. The environmentally friendly water-based cutting fluid of claim 1, wherein the lubricant comprises one or more of a polyether nonionic surfactant, PEG-400, glycerol, and diethylene glycol.

5. The environmentally friendly water-based cutting fluid of claim 1, wherein the emulsifier comprises an alkylphenol ethoxylate and/or fatty alcohol ethoxylate.

6. The environmentally friendly water-based cutting fluid of claim 1, wherein the organic acid comprises one or more of citric acid, isodecanoic acid, oxalic acid, and salicylic acid.

7. The environmentally friendly water-based cutting fluid of claim 1, wherein the organic base comprises one or more of monoethanolamine, triethanolamine, and diethanolamine.

8. The environmentally friendly water-based cutting fluid of claim 1, wherein the extreme pressure agent comprises a borate and/or a phosphite.

9. The environmentally friendly water-based cutting fluid of claim 1, wherein the water softener comprises EDTA-4Na and/or sodium gluconate;

the rust inhibitor comprises triethanolamine oleate soap and/or octenyl succinic anhydride;

the bactericide comprises a triazine bactericide and/or an oxazoline bactericide.

10. A method for producing the environmentally friendly water-based cutting fluid as set forth in any one of claims 1 to 9, comprising the steps of:

a1) mixing an extreme pressure agent, organic base and water to obtain a first mixed solution;

a2) mixing the first mixed solution, a water softener, a lubricant, an emulsifier, an antirust agent, an organic acid and a bactericide to obtain a second mixed solution;

a3) and mixing the second mixed solution with a defoaming agent, then mixing with a settling agent, and standing to obtain the environment-friendly water-based cutting fluid.

Technical Field

The invention belongs to the technical field of cutting processing, and particularly relates to an environment-friendly water-based cutting fluid and a preparation method thereof.

Background

Sapphire and ceramic raw materials are processed into a watch mirror surface, a mobile phone camera, a mobile phone key and the like, and a multi-wire cutting machine is required to cut the materials due to high hardness and high strength of the materials. In the process of cutting materials, cutting fluid is used in order to cool and lubricate the cutting tool.

In the cutting process, the quality of the cutting fluid directly affects the operation stability of cutting equipment and the cutting effect of materials, while the current common commercially available cutting fluid can meet the processing requirements in the aspects of tool lubrication and cooling, but in the cutting process, black oil stains appear on the surface of the cutting fluid due to the abrasive and the bonding agent which fall off from the cutting tool. And only add organosilicon class defoaming agent in the common cutting fluid, the in-process of recycling is filtered some by the filter screen easily to lead to the defoaming effect of cutting fluid to worsen, will appear a large amount of foams after using several days, influence the normal operating of cutting operation. In addition, because components for promoting mortar precipitation and inhibiting mortar agglomeration are not added into common cutting fluid, mortar generated by cutting is difficult to precipitate, and the unprecipitated mortar enters a cutting fluid circulating pipeline of cutting equipment along with the cutting fluid and is agglomerated on the pipeline wall, so that the pipeline of the cutting equipment is blocked.

Disclosure of Invention

In view of the above, the present invention aims to provide an environment-friendly water-based cutting fluid and a preparation method thereof, when the cutting fluid provided by the present invention is used for cutting raw materials, the surface of the cutting fluid has no black oil stain and less foam, and mortar generated by cutting processing does not agglomerate, is easy to precipitate, and does not block cutting equipment pipelines.

The invention provides an environment-friendly water-based cutting fluid, which comprises the following components in percentage by mass:

wherein, the emulsifier can avoid black oil stain generated in the process of recycling the cutting fluid; the organic acid is used for adjusting the pH value of the cutting fluid and has the function of cleaning pipelines and products; the organic base is used for providing an alkaline environment for the cutting fluid, so that the cutting fluid is prevented from corroding cutting equipment during cutting processing, the bacterial reproduction in the cutting fluid can be consistent, the service life of the cutting fluid is prolonged, and the organic base also has certain solubilizing and lubricating functions; the defoaming agent comprises an organic silicon defoaming agent and an alkynol defoaming agent, and can play long-acting defoaming and foam inhibiting roles; the settling agent comprises water-soluble polyacrylamide and/or polyethylene polyamine, has good anti-caking and precipitation promotion effects on the mortar generated by cutting, and can reduce the risk of pipeline blockage of cutting equipment.

Preferably, the organic silicon defoaming agent is dimethyl silicone oil and/or methyl silicone oil, or a defoaming agent with the trademark of AFE-1247. In the invention, the organic silicon defoaming agent has better dispersibility, quick defoaming and low cost.

Preferably, the grade of the alkynol antifoaming agent comprises GT-80 and/or DF-110D. In the invention, the alkynol defoaming agent has strong foam inhibition capability, has good stability in the cutting fluid, is not easy to precipitate, and can ensure the clarity and the transparency of the cutting fluid.

Preferably, the mass ratio of the organic silicon defoaming agent to the alkynol defoaming agent is (0.1-10): 1.

Preferably, the lubricant comprises one or more of polyether type nonionic surfactant, PEG-400, glycerol and diethylene glycol. Wherein, the polyether type nonionic surfactant and PEG-400 have strong lubricating and cleaning effects, strong anti-miscellaneous oil capability and low price.

Preferably, the emulsifier comprises alkylphenol ethoxylates and/or fatty alcohol ethoxylates. In the invention, the emulsifier has strong emulsifying and cleaning capabilities and is low in price.

Preferably, the organic acid comprises one or more of citric acid, isodecanoic acid, oxalic acid and salicylic acid. Wherein, the citric acid, the isomeric decanoic acid and the oxalic acid have stronger cleaning function, low price and good environmental protection.

Preferably, the organic base comprises one or more of monoethanolamine, triethanolamine and diethanolamine. Wherein, the triethanolamine and the diethanolamine have mild alkalinity, no pungent smell, no allergy and good environmental protection.

Preferably, the extreme pressure agent comprises a borate ester and/or a phosphite ester. In the invention, the extreme pressure agent has better lubricating effect, low foam, easy water solubility and lower price.

Preferably, the water softener comprises EDTA-4Na and/or sodium gluconate. In the invention, the water softener is easy to dissolve in water, has better softening effect, low price and good environmental protection property.

Preferably, the rust inhibitor comprises triethanolamine oleate soap and/or octenyl succinic anhydride. In the invention, the antirust agent can obtain better antirust effect at a lower addition amount, and has low price and good environmental protection property.

Preferably, the bactericide comprises a triazine bactericide and/or an oxazoline bactericide. The bactericide has the advantages of strong compatibility, good sterilizing effect, small smell, no sensitization and low price.

The invention also provides a preparation method of the environment-friendly water-based cutting fluid in the technical scheme, which comprises the following steps:

a1) mixing an extreme pressure agent, organic base and water to obtain a first mixed solution;

a2) mixing the first mixed solution, a water softener, a lubricant, an emulsifier, an antirust agent, an organic acid and a bactericide to obtain a second mixed solution;

a3) and mixing the second mixed solution with a defoaming agent, then mixing with a settling agent, and standing to obtain the environment-friendly water-based cutting fluid.

Compared with the prior art, the invention provides the environment-friendly water-based cutting fluid and the preparation method thereof. The cutting fluid provided by the invention comprises the following components in percentage by mass: 10-20 wt% of a lubricant; 0.01-1 wt% of an emulsifier; 2-5 wt% of an extreme pressure agent; 2-6 wt% of organic acid; 6-10 wt% of organic base; 0.01-2 wt% of defoaming agent; 0.02-2 wt% of a water softener; 0.01-1 wt% of an antirust agent; 0.01-3 wt% of a bactericide; 0.01-1 wt% of settling agent; the solvent is deionized water; the defoaming agent comprises an organic silicon defoaming agent and an alkynol defoaming agent; the settling agent comprises water-soluble polyacrylamide and/or polyethylene polyamine. The cutting fluid provided by the invention is added with polyacrylamide and/or polyethylene polyamine as a settling agent, has good anti-caking and precipitation-promoting effects on mortar generated by cutting, and can reduce the risk of pipeline blockage of cutting equipment. Meanwhile, the cutting fluid provided by the invention is added with organic acid, and the organic acid has a cleaning function on the pipeline and the product, so that the risk of pipeline blockage can be further reduced, and the difficulty of subsequent cleaning operation of the product can be reduced. In addition, the cutting fluid provided by the invention is added with organic silicon and alkynol, and the organic silicon compounded alkynol is used as a defoaming agent, so that the cutting fluid provided by the invention has long-acting defoaming and foam inhibiting effects, the cutting fluid is prevented from generating foam in the recycling process, and the service cycle of the cutting fluid is prolonged. In addition, a certain amount of emulsifier is added into the cutting fluid provided by the invention, and the addition of the emulsifier can prevent the cutting fluid from generating black oil stains in the recycling process, so that the service cycle of the cutting fluid can be further prolonged. In addition, the cutting fluid provided by the invention takes water as a solvent, and compared with the cutting fluid added with an organic solvent, the cutting fluid provided by the invention is lower in price, easy to clean, free of sulfur, chlorine, benzene, heavy metal and other toxic substances, and good in economic benefit and environmental benefit. The experimental results show that: after the cutting fluid provided by the invention is used for 1 month, the cutting fluid does not contain foam and black oil stain, mortar generated by cutting processing does not agglomerate, and a cutting equipment pipeline does not have blockage and corrosion.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides an environment-friendly water-based cutting fluid, which comprises the following components in percentage by mass:

the defoaming agent comprises an organic silicon defoaming agent and an alkynol defoaming agent;

the settling agent comprises water-soluble polyacrylamide and/or polyethylene polyamine.

In one embodiment, the present invention provides a formulation for an environmentally friendly water-based cutting fluid comprising a lubricant, an emulsifier, an extreme pressure agent, an organic acid, an organic base, an antifoaming agent, a water softener, an antirust agent, a bactericide, a sedimentation agent, and deionized water. Wherein the lubricant includes, but is not limited to, one or more of polyether type nonionic surfactant, PEG-400, glycerol and diethylene glycol; the polyether type nonionic surfactant can be block polyether 6400 and/or block polyether 6200, wherein the block polyether is provided by the field chemical industry; the content of the polyether nonionic surfactant in the formula is 10-20 wt%, specifically 10 wt%, 10.5 wt%, 11 wt%, 11.5 wt%, 12 wt%, 12.5 wt%, 13 wt%, 13.5 wt%, 14 wt%, 14.5 wt%, 15 wt%, 15.5 wt%, 16 wt%, 16.5 wt%, 17 wt%, 17.5 wt%, 18 wt%, 18.5 wt%, 19 wt%, 19.5 wt% or 20 wt%.

In the present invention, the emulsifier includes, but is not limited to, one or more of alkylphenol ethoxylates and/or fatty alcohol ethoxylates; the alkylphenol polyoxyethylene ether is preferably nonylphenol polyoxyethylene ether; the grade of the nonylphenol polyoxyethylene ether is preferably TX-10; the grade of the fatty alcohol-polyoxyethylene ether is preferably AEO-09; the emulsifier is contained in the formulation in an amount of 0.01 to 1 wt%, specifically 0.01 wt%, 0.05 wt%, 0.1 wt%, 0.15 wt%, 0.2 wt%, 0.25 wt%, 0.3 wt%, 0.35 wt%, 0.4 wt%, 0.45 wt%, 0.5 wt%, 0.55 wt%, 0.6 wt%, 0.65 wt%, 0.7 wt%, 0.75 wt%, 0.8 wt%, 0.85 wt%, 0.9 wt%, 0.95 wt%, or 1 wt%.

In the present invention, the extreme pressure agents include, but are not limited to, borates and/or phosphites; the boric acid ester is preferably triethanolamine boric acid ester; the content of the extreme pressure agent in the formula is 2-5 wt%, and specifically can be 2 wt%, 2.5 wt%, 3 wt%, 3.5 wt%, 4 wt%, 4.5 wt% or 5 wt%.

In the present invention, the organic acid includes, but is not limited to, one or more of citric acid, isomeric decanoic acid (cas:26896-20-8), oxalic acid, and salicylic acid; the content of the organic acid in the formula is 2-6 wt%, specifically 2 wt%, 2.5 wt%, 3 wt%, 3.5 wt%, 4 wt%, 4.5 wt%, 5 wt%, 5.5 wt% or 6 wt%.

In the present invention, the organic base includes, but is not limited to, one or more of monoethanolamine, triethanolamine and diethanolamine; the content of the organic base in the formula is 6-10 wt%, and specifically can be 6 wt%, 6.5 wt%, 7 wt%, 7.5 wt%, 8 wt%, 8.5 wt%, 9 wt%, 9.5 wt% or 10 wt%.

In the present invention, the defoaming agent includes a silicone defoaming agent and an alkynol-based defoaming agent; the organosilicon antifoaming agent is preferably dimethyl silicone oil and/or methyl silicone oil, or an antifoaming agent with the trademark of AFE-1247, wherein the antifoaming agent with the trademark of AFE-1247 is provided by the Gutian chemical industry; the grade of the alkynol antifoaming agent comprises GT-80 and/or DF-110D, the grade of the alkynol antifoaming agent GT-80 is provided by the ancient chemical industry, and the grade of the alkynol antifoaming agent DF-110D is provided by Nochen International trade (Shanghai) Co., Ltd; the mass ratio of the organic silicon defoaming agent to the alkynol defoaming agent is preferably (0.1-10): 1, and specifically can be 0.1:1, 0.3:1, 0.5:1, 0.8:1, 1:1, 1.5:1, 2:1, 3:1, 4:1, 5:1, 7:1 or 10: 1. In the present invention, the content of the defoaming agent in the formulation may be 0.01 to 2 wt%, specifically 0.01 wt%, 0.05 wt%, 0.1 wt%, 0.3 wt%, 0.5 wt%, 0.7 wt%, 0.9 wt%, 1 wt%, 1.1 wt%, 1.2 wt%, 1.3 wt%, 1.4 wt%, 1.5 wt%, 1.6 wt%, 1.7 wt%, 1.8 wt%, 1.9 wt%, or 2 wt%.

In the present invention, the water softener includes, but is not limited to, EDTA-4Na and/or sodium gluconate; the content of the water softener in the formula is 0.02-2 wt%, and specifically can be 0.02 wt%, 0.05 wt%, 0.1 wt%, 0.3 wt%, 0.5 wt%, 0.7 wt%, 1 wt%, 1.2 wt%, 1.5 wt%, 1.7 wt% or 2 wt%.

In the present invention, the rust inhibitors include, but are not limited to, triethanolamine oleate soap and/or octenyl succinic anhydride; the content of the rust inhibitor in the formula is 0.01-1 wt%, and specifically can be 0.01 wt%, 0.05 wt%, 0.1 wt%, 0.2 wt%, 0.3 wt%, 0.4 wt%, 0.5 wt%, 0.6 wt%, 0.7 wt%, 0.8 wt%, 0.9 wt%, or 1 wt%.

In the present invention, the bactericide includes, but is not limited to, triazine-based bactericides and/or oxazoline-based bactericides; the triazine bactericide is preferably hydroxyethyl hexahydro-s-triazine; the content of the bactericide in the formula is 0.01-3 wt%, and specifically can be 0.01 wt%, 0.1 wt%, 0.5 wt%, 1 wt%, 1.5 wt%, 2 wt%, 2.5 wt% or 3 wt%.

In the present invention, the settling agent comprises water-soluble polyacrylamide and/or polyethylene polyamine; the polyethylene polyamine is preferably supplied by Asahi chemical Co., Ltd, Shikimoto, Nanjing, under the trade name HPAX; the content of the settling agent in the formula is 0.01-1 wt%, and specifically can be 0.01 wt%, 0.1 wt%, 0.2 wt%, 0.3 wt%, 0.4 wt%, 0.5 wt%, 0.6 wt%, 0.7 wt%, 0.8 wt%, 0.9 wt% or 1 wt%.

The invention also provides a preparation method of the environment-friendly water-based cutting fluid in the technical scheme, which comprises the following steps:

a) mixing an extreme pressure agent, organic base and water to obtain a first mixed solution;

b) mixing the first mixed solution, a water softener, a lubricant, an emulsifier, an antirust agent, an organic acid and a bactericide to obtain a second mixed solution;

c) and mixing the second mixed solution with a defoaming agent, then mixing with a settling agent, and standing to obtain the environment-friendly water-based cutting fluid.

In the preparation step of the environment-friendly water-based cutting fluid provided by the invention, in the step a), the mixing is preferably performed under a stirring condition, and the mixing temperature is preferably 50-70 ℃, and specifically can be 50 ℃, 55 ℃, 60 ℃, 65 ℃ or 70 ℃; in the step b), the mixing is preferably carried out under stirring, and the mixing time is 1-5 h, specifically 1h, 2h, 3h, 4h or 5 h; in the step c), the mixing with the defoaming agent is preferably carried out under stirring, and the mixing time is preferably 0.2-1 h, and specifically can be 0.2h, 0.5h, 0.7h or 1 h; in the step c), the mixing with the settling agent is preferably carried out under stirring, and the mixing time is preferably 0.2-1 h, and specifically can be 0.2h, 0.5h, 0.7h or 1 h; in the step c), the standing time is preferably 5-10 h, and specifically may be 5h, 6h, 7h, 8h, 9h or 10 h.

According to the invention, by optimally designing the formula of the cutting fluid, the use performance of the cutting fluid is obviously improved, and particularly, the cutting fluid provided by the invention has the following advantages:

1) the cutting fluid provided by the invention is added with polyacrylamide and/or polyethylene polyamine as a settling agent, has good anti-caking and precipitation-promoting effects on mortar generated by cutting, and can reduce the risk of pipeline blockage of cutting equipment.

2) The cutting fluid provided by the invention is also added with organic acid, and the organic acid has a cleaning function on the pipeline and the product, so that the risk of pipeline blockage can be further reduced, and the difficulty of subsequent cleaning operation of the product can be reduced.

3) According to the cutting fluid, the organic silicon and the alkynol are added, and the organic silicon and the alkynol are compounded to be used as the defoaming agent, so that the cutting fluid provided by the invention has long-acting defoaming and foam inhibiting effects, the cutting fluid is prevented from generating foam in the recycling process, and the service cycle of the cutting fluid is prolonged.

4) The cutting fluid provided by the invention is added with a certain amount of emulsifier, and the addition of the emulsifier can prevent the cutting fluid from generating black oil stains in the recycling process, so that the service cycle of the cutting fluid is further prolonged.

5) Compared with the cutting fluid added with an organic solvent, the cutting fluid provided by the invention has the advantages of low price, easiness in cleaning, no toxic substances such as sulfur, chlorine, benzene, heavy metals and the like, and good economic benefit and environmental benefit.

The experimental results show that: after the cutting fluid provided by the invention is used for 1 month, the cutting fluid does not contain foam and black oil stain, mortar generated by cutting processing does not agglomerate, and a cutting equipment pipeline does not have blockage and corrosion.

For the sake of clarity, the following examples are given in detail.