CN110305728B - Lubricant for polymer plastic forming and preparation method thereof - Google Patents
Lubricant for polymer plastic forming and preparation method thereof Download PDFInfo
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- CN110305728B CN110305728B CN201910726405.6A CN201910726405A CN110305728B CN 110305728 B CN110305728 B CN 110305728B CN 201910726405 A CN201910726405 A CN 201910726405A CN 110305728 B CN110305728 B CN 110305728B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M173/00—Lubricating compositions containing more than 10% water
- C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/08—Inorganic acids or salts thereof
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/087—Boron oxides, acids or salts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/12—Polysaccharides, e.g. cellulose, biopolymers
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
- C10M2213/062—Polytetrafluoroethylene [PTFE]
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
- C10M2229/052—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/04—Detergent property or dispersant property
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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Abstract
The invention belongs to the technical field of lubrication for metal plastic forming, and particularly relates to a lubricant for polymer plastic forming and a preparation method thereof, wherein the lubricant for polymer plastic forming comprises the following components in percentage by weight: polytetrafluoroethylene emulsion, boron nitride, N-methyl pyrrolidone, molybdate, ethanol, carboxymethyl cellulose salt, amino silicone oil, stearate, triethanolamine and the balance of water. The preparation method comprises the following steps: dissolving N-methyl pyrrolidone, ethanol, carboxymethyl cellulose salt, amino silicone oil, triethanolamine, stearate and water uniformly, adding polytetrafluoroethylene emulsion, boron nitride and molybdate, stirring and performing ultrasonic dispersion. The lubricant for polymer plastic forming not only keeps the advantages of low friction coefficient, wide source, low cost, no toxicity, no odor and the like of the original water-based polymer lubricant, but also is applied to warm-cold composite forming, and completely meets the development requirement of green manufacturing in modern industry. The preparation process is simple and suitable for batch production.
Description
Technical Field
The invention belongs to the technical field of lubrication for metal plastic forming, and particularly relates to a lubricant for polymer plastic forming and a preparation method thereof.
Background
The lubricant acts on the surface of the blank to generate a compact lubricating film, so that the direct contact between the blank and the metal of the die is avoided. At present, the most common surface film forming treatment process of phosphorization and saponification is adopted in cold plastic processing, particularly cold forging and cold extrusion processing. The phosphorization saponification film-forming process is mature and stable in technology, but has the serious problems of high waste treatment cost, large environmental pollution and the like.
The water-based lubricant has low cost, wide source and no toxicity and odor, is an environment-friendly lubricant, and also is a development direction of future lubricants. Water-based lubricants generally consist of water, a lubricating base and a lubricating aid, water being the main component of the water-based lubricant and determining the basic function of the water-based lubricant. The main lubricating body is the main material with main antifriction and antiwear performance in the water-based lubricant, and the main lubricating body material can greatly improve the friction factor of the water-based lubricant. In order to improve the lubricating performance of the water-based lubricant, solid nano-particles are added into the water-based lubricant, and the solid nano-particles have the problems of easy agglomeration, poor dispersibility and the like. The lubricating assistant is a tie connecting the lubricating main body material and water, can make the lubricating material more easily dispersed in water and make the water-based lubricant more stable, and is an important component of the water-based lubricant. The lubricating assistant generally comprises a dispersant, a tackifier, an anti-corrosion antirust agent and the like.
However, the water-based lubricant also has the problems of affecting the quality and the application of the water-based lubricant, such as the limitations of insufficient dimensional precision and insufficient deformation of applied workpieces caused by insufficient surface tension and adsorption force of a lubricating film of the water-based lubricant; the water-based lubricant has the problems of poor adhesion between a lubricating film and the metal surface, unstable and durable lubricating property and the like. The existing water-based lubricant is only suitable for extrusion procedures under a single temperature working condition, such as cold extrusion, warm extrusion or hot extrusion, and the application range is limited. The lubricant in the plastic forming composite process needs to meet the following requirements that the conditions are harsh under different temperature working conditions: the lubricant always keeps certain surface tension, a lubricating main body of the lubricant has higher mechanical property and hot blood property, and the physical and chemical properties of the lubricant forming a lubricating film can not be changed violently.
Disclosure of Invention
The invention aims to provide a lubricant for polymer plastic forming, which has good dispersibility and stability, improves the adhesive capacity of the lubricant to a certain extent while keeping the good characteristics of a water-based lubricant, has good protection effect on a die and a blank, and prolongs the service life of the die.
The lubricant for polymer plastic forming is not only suitable for cold extrusion, but also suitable for warm extrusion, does not agglomerate or precipitate, reduces the thickness of the lubricating film, and simultaneously maintains good film forming property, adsorptivity and lubricity.
The invention also provides a preparation method of the lubricant for polymer plastic forming, which is characterized in that the auxiliary agent component for preparing the lubricant is dissolved uniformly, and then the nano-particle component of the lubricating main body is added, so that the good dispersibility and stability of the lubricating main body are ensured, and the service performance of the water-based lubricant is improved.
The technical scheme of the invention is that the lubricant for polymer plastic forming comprises the following components in percentage by weight: 0.1 to 15 percent of polytetrafluoroethylene emulsion, 0.1 to 10 percent of boron nitride, 0.1 to 10 percent of N-methyl pyrrolidone, 0.1 to 12 percent of molybdate, 0.1 to 30 percent of ethanol, 0.1 to 10 percent of carboxymethyl cellulose salt, 0.1 to 5 percent of amino silicone oil, 0.1 to 10 percent of stearate, 0.1 to 10 percent of triethanolamine and the balance of water.
Preferably the following components in percentage by weight: 3 to 7 percent of polytetrafluoroethylene emulsion, 1.5 to 4.5 percent of boron nitride, 4 to 8 percent of N-methyl pyrrolidone, 3 to 11 percent of molybdate, 10 to 15 percent of ethanol, 0.5 to 1.5 percent of carboxymethyl cellulose salt, 0.5 to 3.5 percent of amino silicone oil, 3 to 7 percent of stearate, 3 to 7 percent of triethanolamine and the balance of water.
More preferably the following components in percentage by weight: 5% of polytetrafluoroethylene emulsion, 3% of boron nitride, 6% of N-methyl pyrrolidone, 7% of molybdate, 15% of ethanol, 1% of carboxymethyl cellulose salt, 2% of amino silicone oil, 5% of stearate, 5% of triethanolamine and the balance of water.
The concentration of the polytetrafluoroethylene emulsion is 25-35 wt%, and preferably 30 wt%.
The particle size of the boron nitride is 3-5 mu m.
The molybdate comprises ammonium molybdate, alkali metal molybdate or magnesium molybdate, the ammonium molybdate is ammonium molybdate, and the alkali metal molybdate comprises sodium molybdate or potassium molybdate, preferably sodium molybdate.
The carboxymethyl cellulose salt is in a solid state and comprises sodium carboxymethyl cellulose, potassium carboxymethyl cellulose, calcium carboxymethyl cellulose or ammonium carboxymethyl cellulose, and preferably sodium carboxymethyl cellulose.
The stearate comprises sodium stearate, calcium stearate, aluminium stearate, potassium stearate, magnesium stearate or iron stearate, preferably sodium stearate.
As a preferable scheme of the invention, the paint comprises the following components in percentage by weight: 5% of polytetrafluoroethylene emulsion, 3% of boron nitride, 6% of N-methyl pyrrolidone, 7% of sodium molybdate, 15% of ethanol, 1% of sodium carboxymethyl cellulose, 2% of amino silicone oil, 5% of sodium stearate, 5% of triethanolamine and the balance of water; the concentration of the polytetrafluoroethylene emulsion is 30 wt%, and the particle size of the boron nitride is 3-5 μm.
A method for preparing a lubricant for polymer plastic forming comprises the following steps: dissolving N-methyl pyrrolidone, ethanol, carboxymethyl cellulose salt, amino silicone oil, triethanolamine, stearate and water uniformly according to the proportion, adding polytetrafluoroethylene emulsion, boron nitride and molybdate according to the proportion, stirring, and performing ultrasonic dispersion to prepare a lubricant for polymer plastic forming;
or mixing polytetrafluoroethylene emulsion, boron nitride, N-methyl pyrrolidone, molybdate, ethanol, carboxymethyl cellulose salt, amino silicone oil, stearate, triethanolamine and the balance of water according to a ligand, stirring, and performing ultrasonic dispersion to obtain the lubricant for polymer plastic forming.
The method is characterized in that the auxiliary agent component for preparing the lubricant is dissolved uniformly, and then the nano-particle component of the lubricating main body is added, so that the physical performance of the lubricant is not influenced by the adding sequence (the auxiliary agents such as the dispersing agent, the tackifier, the emulsifier and the like are added into water to reduce the surface free energy of water, the lubricating main body is added for better dispersion, and finally the antirust agent is added), and the method is beneficial to batch production and specification formulation of the lubricant. The adverse effects of adding the lubricating main body and the lubricating auxiliary agent into water at one time on the dispersibility and stability of the lubricating agent are avoided.
In the lubricant system for polymer plastic forming, the weight percentage of each component is as follows: 0.1 to 15 percent of polytetrafluoroethylene emulsion, 0.1 to 10 percent of boron nitride, 0.1 to 10 percent of N-methyl pyrrolidone, 0.1 to 12 percent of molybdate, 0.1 to 30 percent of ethanol, 0.1 to 10 percent of carboxymethyl cellulose salt, 0.1 to 5 percent of amino silicone oil, 0.1 to 10 percent of stearate, 0.1 to 10 percent of triethanolamine and the balance of water.
The weight percentage of each component is preferably as follows: 3 to 7 percent of polytetrafluoroethylene emulsion, 1.5 to 4.5 percent of boron nitride, 4 to 8 percent of N-methyl pyrrolidone, 3 to 11 percent of molybdate, 10 to 15 percent of ethanol, 0.5 to 1.5 percent of carboxymethyl cellulose salt, 0.5 to 3.5 percent of amino silicone oil, 3 to 7 percent of stearate, 3 to 7 percent of triethanolamine and the balance of water.
The weight percentages of the components are more preferably as follows: 5% of polytetrafluoroethylene emulsion, 3% of boron nitride, 6% of N-methyl pyrrolidone, 7% of molybdate, 15% of ethanol, 1% of carboxymethyl cellulose salt, 2% of amino silicone oil, 5% of stearate, 5% of triethanolamine and the balance of water.
The molybdate comprises ammonium molybdate, alkali metal molybdate or magnesium molybdate, the ammonium molybdate is ammonium molybdate, and the alkali metal molybdate comprises sodium molybdate or potassium molybdate, preferably sodium molybdate.
The carboxymethyl cellulose salt is in a solid state and comprises sodium carboxymethyl cellulose, potassium carboxymethyl cellulose, calcium carboxymethyl cellulose or ammonium carboxymethyl cellulose, and preferably sodium carboxymethyl cellulose.
The stearate comprises sodium stearate, calcium stearate, aluminium stearate, potassium stearate, magnesium stearate or iron stearate, preferably sodium stearate.
The concentration of the polytetrafluoroethylene emulsion is 25-35 wt%, and preferably 30 wt%.
The particle size of the boron nitride is 3-5 mu m.
And (4) repeatedly stirring for 2-6 times, then performing ultrasonic dispersion, and preferably repeatedly stirring for 4-5 times. Stirring for 15-30 min, preferably 30min each time; ultrasonic dispersion is carried out for 30-60 min, preferably for 60min each time.
As a preferred scheme of the invention, firstly, dissolving N-methyl pyrrolidone, ethanol, sodium carboxymethylcellulose, amino silicone oil, triethanolamine, sodium stearate and water uniformly, then adding polytetrafluoroethylene emulsion, boron nitride and sodium molybdate, repeatedly stirring for 4-5 times, then performing ultrasonic dispersion, stirring for 30min each time, and performing ultrasonic dispersion for 60min each time to prepare the lubricant for polymer plastic forming;
the weight percentages of the components are as follows: 5% of polytetrafluoroethylene emulsion, 3% of boron nitride, 6% of N-methyl pyrrolidone, 7% of sodium molybdate, 15% of ethanol, 1% of sodium carboxymethyl cellulose, 2% of amino silicone oil, 5% of sodium stearate, 5% of triethanolamine and the balance of water;
the concentration of the polytetrafluoroethylene emulsion is 30 wt%;
the particle size of the boron nitride is 3-5 μm.
Polytetrafluoroethylene is currently considered to be one of the most lubricating polymeric lubricating materials, has the characteristics of excellent chemical stability and corrosion resistance, and is also one of the most corrosion-resistant polymeric materials recognized at present. The polytetrafluoroethylene powder is not easy to dissolve in water, the polytetrafluoroethylene powder is easy to agglomerate and the like in the process of preparing the lubricant, and the polytetrafluoroethylene emulsion keeps the excellent lubricating property of the powder and can be stably dispersed in water, so that the lubricating property of the lubricant can be better exerted by adopting the polytetrafluoroethylene emulsion.
The inorganic non-metallic material boron nitride has a similar sheet structure to graphite, is milk white, and is called white graphite. The boron nitride has good thermal stability, is not easy to react with iron metal or alloy, and can be widely applied to precision processing and grinding of steel products, mold release agents for metal forming, water-based lubricants for metal wire drawing and the like.
In the prior art, some nano particles such as boron nitride and the like are added into a water-based lubricant to form a stable colloidal solvent, and the colloidal solvent can be dispersed for a long time without precipitation under the action of a dispersing aid, so that the tribological performance of the water-based lubricant is effectively improved. Currently, precipitation occurs at concentrations of nano-filler particles generally above 15%, and concentrations below 1.5% cause inadequate lubrication performance of the lubricant. According to the lubricant for polymer plastic forming, the maximum dispersing capacity of nano particles is researched according to the existing defects, and the fact that the prepared lubricant has no obvious precipitate under the concentration of 5% of polytetrafluoroethylene emulsion and 3% of boron nitride is found, the lubricant can be stably dispersed for more than one week, and the lubricating performance is improved.
Sodium molybdate is an excellent lubricating material which is selected particularly. The molybdate in the water-based lubricant can effectively reduce the friction factor between metals, has good friction-reducing and wear-resisting properties, and can form a layer of compact passive film on the surface of the metal. In current green and environmentally friendly lubricant requirements, the phosphorus content must be strictly controlled, and thus molybdate is an acceptable substitute for phosphate.
The amino silicone oil is a hard water resisting agent of a water-based lubricant, and has excellent adsorbability, compatibility and easy emulsibility. When the water-based lubricant is prepared, the amino silicone oil is easily emulsified into stable and transparent microemulsion by the surfactant. The performance of the lubricant can be improved to a certain extent by adding a proper amount of amino silicone oil.
The dispersant of the invention is selected from: n-methyl pyrrolidone (colorless liquid, ammonia smell, low toxicity, water-miscible, soluble in most organic solvents such as ether and acetone). N-methyl pyrrolidone is a polar solvent with good solvent, strong selectivity and good stability. The diffusing agent plays a role of uniformly diffusing various substances into the aqueous solvent in the water-based lubricant.
The water-based lubricant is coated on the surface of a blank to be contacted with the surface of a tool and a die, and the aim of lubrication is fulfilled by reducing the friction between metals. Compared with the prior art, the lubricant for polymer plastic forming takes water as the matrix of the water-based lubricant, and the main lubricating material is boron nitride and polytetrafluoroethylene emulsion. The process of the lubricant for polymer plastic forming not only retains the characteristics of good adhesion of the lubricating surface, low and stable friction coefficient and the like and the advantages of a water-based lubricant, but also meets the green development requirement of the modern process. The lubricating coating on the coated surface is improved, the concentration of the tackifier is controlled to be about 1%, the surface tension and the adsorption force of the coating are increased, the content of solid particles is reduced, and the film thickness of the lubricating layer is reduced. The thickness of the lubricating film is about 2-5 μm measured by a step meter. The surface tension of the lubricating film can control the lubricating film to have certain ductility, and the reduction of the thickness can greatly reduce the generation of film slag and scraps in the flowing process of metal, so that the secondary wear of the film slag and the scraps on the surfaces of a mold and a product in a cavity is reduced.
Since the pH of the lubricant for metal plastic forming is generally weakly alkaline, the pH of the lubricant is usually adjusted by adding ammonia water, but the ammonia water has a large odor and is contaminated. Most of the components of the lubricant for polymer plastic forming are alkalescent components, the pH value is about 8-9, and the alkalescent requirement can be met without adding pH regulators such as ammonia water and the like additionally.
The lubricant for polymer plastic forming is a water-based lubricant, is applied to metal warm-cold composite forming at the blank heating temperature of 100-400 ℃, and reduces the friction between the blank and a die. The lubricant for polymer plastic forming can be used in both the working procedures of warm extrusion and cold extrusion, breaks through the limitation that the existing water-based lubricant is only suitable for a single temperature working condition, simplifies the lubricant adding and using process in the plastic forming process, saves the cost, meets the development requirement of modern industrial green manufacturing, and has wide application prospect in the field of industrial lubricants. In the cold extrusion and warm extrusion processes, the lubricating film is basically kept at about 2-5 mu m due to the better heat resistance of boron nitride and polytetrafluoroethylene.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention.
Example 1
The lubricant for polymer plastic forming comprises the following formula components in percentage by mass:
5wt% of polytetrafluoroethylene emulsion (the concentration of the polytetrafluoroethylene emulsion is 30 wt%), 3 wt% of boron nitride with the particle size of 3-5 mu m, 6 wt% of N-methyl pyrrolidone, 7 wt% of sodium molybdate, 15 wt% of ethanol, 1 wt% of sodium carboxymethyl cellulose, 5wt% of triethanolamine, 2 wt% of amino silicone oil, 5wt% of sodium stearate and the balance of water.
The lubricant for polymer plastic forming is prepared according to the following steps:
s1: weighing the following components in parts by weight: 6 wt% of N-methyl pyrrolidone, 15 wt% of ethanol, 1 wt% of sodium carboxymethyl cellulose, 2 wt% of amino silicone oil, 51 wt% of deionized water, 5wt% of triethanolamine and 5wt% of sodium stearate.
S2: the components are sequentially added into a beaker, stirred at normal temperature until the components are fully dissolved, and then sequentially added with 7 wt% of sodium molybdate, 5wt% of polytetrafluoroethylene emulsion and 3 wt% of boron nitride.
S3: and stirring for 30min at normal temperature, dispersing for 60min by using an ultrasonic instrument, and repeatedly stirring and dispersing for 4-5 times to obtain the lubricant for polymer plastic forming.
The prepared lubricant for polymer plastic forming is coated in a No. 45 steel sheet, a UMT-3 high-temperature ball-and-disc friction instrument is used for friction performance test, a GCr15 steel ball is adopted as a counter-grinding pair, the friction time is 30min, the load is set to be 2.0kg, and the obtained average friction coefficient is 0.08.
Example 2
The lubricant for polymer plastic forming comprises the following formula components in percentage by mass (wt%):
5wt% of polytetrafluoroethylene emulsion (the concentration of the polytetrafluoroethylene emulsion is 30 wt%), 3 wt% of boron nitride with the particle size of 3-5 mu m, 6 wt% of N-methyl pyrrolidone, 7 wt% of sodium molybdate, 15 wt% of ethanol, 1 wt% of sodium carboxymethyl cellulose, 5wt% of triethanolamine, 2 wt% of amino silicone oil, 5wt% of sodium stearate and the balance of water.
The lubricant for polymer plastic forming is prepared according to the following steps:
weighing the following components in parts by weight: 6 wt% of N-methyl pyrrolidone, 15 wt% of ethanol, 1 wt% of sodium carboxymethylcellulose, 2 wt% of amino silicone oil, 51 wt% of deionized water, 5wt% of triethanolamine, 7 wt% of sodium molybdate, 5wt% of polytetrafluoroethylene emulsion, 3 wt% of boron nitride and 5wt% of sodium stearate, adding the materials into a beaker, stirring the materials for 30min at normal temperature, dispersing the materials for 60min by using an ultrasonic instrument, and repeatedly stirring and dispersing the materials for 4-5 times to obtain the lubricant for polymer plastic forming.
The prepared lubricant for polymer plastic forming is coated in a No. 45 steel sheet, a UMT-3 high-temperature ball-and-disc friction instrument is used for friction performance test, a GCr15 steel ball is adopted as a counter-grinding pair, the friction time is 30min, the load is set to be 2.0kg, and the obtained average friction coefficient is 0.13.
Comparing example 1 with example 2, it can be seen that the solid component and the liquid component are added separately in the preparation process of the lubricant for polymer plastic forming, which not only ensures that the physical properties of the lubricant are not affected by the adding sequence, but also is beneficial to the mass production and standardized and simple preparation of the lubricant.
Example 3
The lubricant for polymer plastic forming comprises the following formula components in percentage by mass (wt%):
3 wt% of polytetrafluoroethylene emulsion (the concentration of the polytetrafluoroethylene emulsion is 30 wt%), 1.5 wt% of boron nitride with the particle size of 3-5 mu m, 4 wt% of N-methylpyrrolidone, 0.5 wt% of sodium carboxymethylcellulose, 0.5 wt% of amino silicone oil, 3 wt% of sodium stearate, 3 wt% of sodium molybdate, 3 wt% of triethanolamine, 10 wt% of ethanol and the balance of water.
The lubricant for polymer plastic forming is prepared according to the following steps:
s1: weighing the following components in parts by weight: 4 wt% of N-methyl pyrrolidone, 10 wt% of ethanol, 0.5 wt% of amino silicone oil, 71.5 wt% of deionized water, 3 wt% of triethanolamine, 05 wt% of sodium carboxymethylcellulose and 3 wt% of sodium stearate.
S2: the components are sequentially added into a beaker, stirred at normal temperature until the components are fully dissolved, and then sequentially added with 3 wt% of molybdate, 3 wt% of polytetrafluoroethylene emulsion and 1.5 wt% of boron nitride.
S3: stirring for 30min at normal temperature, dispersing for 60min by using an ultrasonic instrument, and repeatedly stirring and dispersing for 4-5 times to obtain the lubricant for polymer plastic forming.
The prepared lubricant for polymer plastic forming is coated in a No. 45 steel sheet, a UMT-3 high-temperature ball-and-disc friction instrument is used for friction performance test, a GCr15 steel ball is adopted as a counter-grinding pair, the friction time is 30min, the load is set to be 2.0kg, and the obtained average friction coefficient is 0.10.
Example 4
The lubricant for polymer plastic forming comprises the following formula components in percentage by mass (wt%):
7 wt% of polytetrafluoroethylene emulsion (the concentration of the polytetrafluoroethylene emulsion is 30 wt%), 4.5 wt% of boron nitride with the particle size of 3-5 mu m, 8 wt% of N-methylpyrrolidone, 15 wt% of ethanol, 11 wt% of sodium molybdate, 7 wt% of triethanolamine, 3.5 wt% of amino silicone oil, 7 wt% of sodium stearate, 1.5 wt% of sodium carboxymethylcellulose and the balance of water.
The lubricant for polymer plastic forming is prepared according to the following steps:
s1: weighing the following components in parts by weight: 8 wt% of N-methyl pyrrolidone, 15 wt% of ethanol, 1.5 wt% of sodium carboxymethyl cellulose, 3.5 wt% of amino silicone oil, 35.5 wt% of deionized water, 7 wt% of triethanolamine and 7 wt% of sodium stearate.
S2: the components are sequentially added into a beaker, stirred at normal temperature until the components are fully dissolved, and then sequentially added with 11 wt% of molybdate, 7 wt% of polytetrafluoroethylene emulsion and 4.5 wt% of boron nitride.
S3: stirring for 30min at normal temperature, dispersing for 60min by using an ultrasonic instrument, and repeatedly stirring and dispersing for 4-5 times to obtain the lubricant for polymer plastic forming.
The prepared lubricant for polymer plastic forming is coated in a No. 45 steel sheet, a UMT-3 high-temperature ball-and-disc friction instrument is used for friction performance test, a GCr15 steel ball is adopted as a counter-grinding pair, the friction time is 30min, the load is set to be 2.0kg, and the obtained average friction coefficient is 0.15.
The present invention is not limited to the above-described embodiments, and those skilled in the art can make improvements and modifications without departing from the scope of the present invention based on the disclosure of the present invention.
Claims (4)
1. The lubricant for polymer plastic forming is characterized by comprising the following components in percentage by weight: 3 to 7 percent of polytetrafluoroethylene emulsion, 1.5 to 4.5 percent of boron nitride, 4 to 8 percent of N-methyl pyrrolidone, 3 to 11 percent of molybdate, 10 to 15 percent of ethanol, 0.5 to 1.5 percent of carboxymethyl cellulose salt, 0.5 to 3.5 percent of amino silicone oil, 3 to 7 percent of stearate, 3 to 7 percent of triethanolamine and the balance of water, wherein the concentration of the polytetrafluoroethylene emulsion is 25 to 35 percent by weight; the particle size of the boron nitride is 3-5 mu m;
the preparation method comprises the following steps: dissolving N-methyl pyrrolidone, ethanol, carboxymethyl cellulose salt, amino silicone oil, triethanolamine, stearate and water uniformly according to the proportion, adding polytetrafluoroethylene emulsion, boron nitride and molybdate according to the proportion, stirring, and performing ultrasonic dispersion to prepare a lubricant for polymer plastic forming;
or mixing polytetrafluoroethylene emulsion, boron nitride, N-methyl pyrrolidone, molybdate, ethanol, carboxymethyl cellulose salt, amino silicone oil, stearate, triethanolamine and the balance of water according to the proportion, stirring and performing ultrasonic dispersion to prepare the lubricant for polymer plastic forming.
2. The lubricant for plastic molding of a polymer according to claim 1, which comprises the following components in parts by weight: 5% of polytetrafluoroethylene emulsion, 3% of boron nitride, 6% of N-methyl pyrrolidone, 7% of molybdate, 15% of ethanol, 1% of carboxymethyl cellulose salt, 2% of amino silicone oil, 5% of stearate, 5% of triethanolamine and the balance of water.
3. The lubricant for plastic forming of a polymer according to claim 1 or 2, wherein the molybdate comprises ammonium molybdate, alkali metal molybdate or magnesium molybdate; the carboxymethyl cellulose salt comprises sodium carboxymethyl cellulose, potassium carboxymethyl cellulose, calcium carboxymethyl cellulose or ammonium carboxymethyl cellulose; stearates include sodium stearate, calcium stearate, aluminum stearate, potassium stearate, magnesium stearate or iron stearate.
4. The lubricant for plastic molding of a polymer according to claim 1, wherein the lubricant is prepared by repeating the ultrasonic dispersion after stirring 2 to 6 times; stirring for 15-30 min each time, and ultrasonically dispersing for 30-60 min each time.
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| CN112111321A (en) * | 2020-05-29 | 2020-12-22 | 上海工程技术大学 | Functionalized graphene lubricant for metal plastic processing and preparation method thereof |
| CN112410110A (en) * | 2020-10-17 | 2021-02-26 | 苏州军正工业科技有限公司 | Water-based composite lubricant and preparation and coating film forming process thereof |
| CN113293056A (en) * | 2021-04-15 | 2021-08-24 | 上海工程技术大学 | PVDF (polyvinylidene fluoride) water-based composite lubricant and preparation method thereof |
| CN114250105A (en) * | 2021-11-08 | 2022-03-29 | 周海涛 | Water-based self-repairing lubricant for cam and preparation method thereof |
| CN115161103A (en) * | 2022-06-07 | 2022-10-11 | 上海工程技术大学 | High-lubricity graphite/polytetrafluoroethylene lubricant and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243150A (en) * | 1998-06-09 | 2000-02-02 | 日本巴可莱新株式会社 | Lubricant for plastic working of metal material |
| CN101970621A (en) * | 2007-12-10 | 2011-02-09 | 凯密特尔有限公司 | Formulation of a metalworking fluid |
| CN102451623A (en) * | 2010-10-15 | 2012-05-16 | Ppt研究公司 | Stable water-based slurry suspension |
| CN102533423A (en) * | 2011-12-02 | 2012-07-04 | 华中科技大学 | Non-graphite type lubricant for hot die forging of metal and preparation method of non-graphite type lubricant |
| CN102757852A (en) * | 2011-04-29 | 2012-10-31 | 中国石油化工股份有限公司 | Rolling lubricant composition and usage thereof |
| KR20130046289A (en) * | 2011-10-27 | 2013-05-07 | 동우 화인켐 주식회사 | Aqueous sawing fluid composition |
| CN104830512A (en) * | 2015-05-20 | 2015-08-12 | 上海工程技术大学 | Water-based high-polymer composite lubricant for cold extrusion and preparation method thereof |
| US9394502B2 (en) * | 2008-04-28 | 2016-07-19 | Ppt Research, Inc. | Stable aqueous slurry suspensions |
-
2019
- 2019-08-07 CN CN201910726405.6A patent/CN110305728B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243150A (en) * | 1998-06-09 | 2000-02-02 | 日本巴可莱新株式会社 | Lubricant for plastic working of metal material |
| CN101970621A (en) * | 2007-12-10 | 2011-02-09 | 凯密特尔有限公司 | Formulation of a metalworking fluid |
| US9394502B2 (en) * | 2008-04-28 | 2016-07-19 | Ppt Research, Inc. | Stable aqueous slurry suspensions |
| CN102451623A (en) * | 2010-10-15 | 2012-05-16 | Ppt研究公司 | Stable water-based slurry suspension |
| CN102757852A (en) * | 2011-04-29 | 2012-10-31 | 中国石油化工股份有限公司 | Rolling lubricant composition and usage thereof |
| KR20130046289A (en) * | 2011-10-27 | 2013-05-07 | 동우 화인켐 주식회사 | Aqueous sawing fluid composition |
| CN102533423A (en) * | 2011-12-02 | 2012-07-04 | 华中科技大学 | Non-graphite type lubricant for hot die forging of metal and preparation method of non-graphite type lubricant |
| CN104830512A (en) * | 2015-05-20 | 2015-08-12 | 上海工程技术大学 | Water-based high-polymer composite lubricant for cold extrusion and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| "Conferring Polytetrafluoroethylene Micropowders with Hydrophilicity Using Dopamine Chemistry and the Application as Water-Based Lubricant Additive";Hong Zhang等;《Journal of Applied Polymer Science》;20110707;第122卷;第3145-3151页 * |
| "氮化硼二维纳米材料剥离制备技术研究进展";刘闯等;《材料工程》;20160331;第44卷(第3期);第122-128页 * |
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