CN102205390B - Environmentally-friendly casting mold-releasing agent and preparation method thereof - Google Patents
Environmentally-friendly casting mold-releasing agent and preparation method thereof Download PDFInfo
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- CN102205390B CN102205390B CN 201110108532 CN201110108532A CN102205390B CN 102205390 B CN102205390 B CN 102205390B CN 201110108532 CN201110108532 CN 201110108532 CN 201110108532 A CN201110108532 A CN 201110108532A CN 102205390 B CN102205390 B CN 102205390B
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Abstract
The invention discloses an environmentally-friendly casting mold-releasing agent which comprises the following components by weight percent: 30-45% of modified plant grease, 8-40% of emulsifying agent, 0.3-2% of preservative, 0.5-2% of antioxidant, 2-5% of ethanol, 1-3% of triethanolamine, and the balance of deionized water. The casting mold-releasing agent has an excellent mold-releasing effect and is used for greatly reducing the environmental pollution and saving the usage of petroleum non-renewable resources.
Description
Technical field
The invention belongs to technical field of nonferrous metal processing, relate to a kind of environment-friendly type casting mold-releasing agent and preparation method thereof.
Background technology
Existing casting mold-releasing agent adopts the mineral oil such as machinery oil, hydraulic oil, diesel oil, silicone oil, paraffin and water mostly after emulsification, spray to die surface through dilution when the die casting operation, evaporation by moisture makes mold cools down, reduce the distortion of mould, form thin film at die surface simultaneously, be beneficial to the demoulding to reduce the ejection resistance between mould and foundry goods.Be present in mineral oil on mould with form of film and stick to foundry goods and enter next procedure (entered environment), and the biological degradability of mineral oil is very poor, its degradation rate only has 10～30%, thereby environment is caused certain pollution.
Vegetable and animals oils is because the easy wax deposition of low temperature, oxidation stability are poor, so be not used aspect casting mold-releasing agent always.Along with the worsening shortages of the energy, and people are to the eager desire of environmental protection, and the application of vegetable oil has obtained sufficient attention.In recent years, the improved plant grease all is being greatly improved aspect anti-oxidant, low-temperature stability, extreme pressure property and greasy property, and easily biodegradation, toxicity are low, and this becomes possibility with regard to the casting mold-releasing agent that makes the friendly type of production environment.
Although the vegetable oil esters cost is higher, the expense that increases is enough to offset the expense of using the environmental pollution improvement that other mineral oil, synthetic lubricant fluid bring.
Summary of the invention
The object of the invention is to provide a kind of environment-friendly type casting mold-releasing agent, has solved that the prior art mineral oil in fluid is big for environment pollution as casting mold-releasing agent, vegetable and animals oils is as the problem such as the easy wax deposition of casting mold-releasing agent low temperature, oxidation stability be poor.
In order to solve these problems of the prior art, technical scheme provided by the invention is:
A kind of environment-friendly type casting mold-releasing agent is characterized in that described releasing agent counts with the percentage by weight of its component:
Improved plant grease 30～45%;
Emulsifying agent 8～40%;
Anticorrisive agent 0.3～2%;
Antioxidant 0.5～2%;
Ethanol 2～5%;
Triethanolamine 1～3%;
All the other are deionized water.
Preferably, described releasing agent is counted with the percentage by weight of its component:
Improved plant grease 30～45%;
Emulsifying agent 10～15%;
Anticorrisive agent 0.3～2%;
Antioxidant 0.5～2%;
Ethanol 2～5%;
Triethanolamine 1～3%;
All the other are deionized water.
Preferably; described improved plant grease is to get through epoxidation modification or hydroformylation modification by the vegetable fat that will be selected from following one or more, and described vegetable fat is selected from linolenic acid methyl esters, methyl linoleate, methyl oleate and linolenic acid ethyl ester, ethyl linoleate, ethyl oleate.
Preferably, described improved plant grease is selected from one or more any combination of epoxy methyl linoleate, epoxy ethyl linoleate, epoxyoleic acid methyl esters, epoxyoleic acid ethyl ester, methyl epoxy stearate, epoxystearic acid ethyl ester, formyl methyl linoleate, formyl ethyl linoleate, formyl methyl oleate, formyl ethyl oleate, formyl methyl stearate, formyl ethyl stearte.
Preferably, described emulsifying agent is selected from condensation compound of alkyl phenol and epoxy ethane, aliphatic acid and ethylene oxide condensate, fatty alcohol and ethylene oxide condensate, castor oil and ethylene oxide condensate, polyoxyethylene sorbitan fatty acid ester.
Preferably, described anticorrisive agent is selected from sorbic acid, benzoic acid, Sodium Benzoate, calcium propionate etc.
Preferably, described antioxidant is selected from ditert-butylhydro quinone, butylated hydroxy anisole, dibutyl hydroxy toluene etc.
The present invention also provides a kind of preparation method of environment-friendly type casting mold-releasing agent, it is characterized in that said method comprising the steps of:
(1) the improved plant grease is added emulsifying kettle, slowly be heated to 60～80 ℃, then add emulsifying agent to become homodisperse oil phase the rotating speed dispersed with stirring of 200～300 rev/mins;
(2) obtain to add deionized water in homodisperse oil phase in step (1) in batches, keep the condition of 60～80 ℃ constant, form solution A the rotating speed dispersed with stirring of 1000～1500 rev/mins, solution A is cooled to 20～35 ℃;
(3) with deionized water, anticorrisive agent, ethanol, antioxidant, triethanolamine are mixed with solution B, solution B is joined in cooling solution A, filter through stirring and form the environment-friendly type casting mold-releasing agent.
Preferably, first add the deionized water of deionized water total amount 1/6 in described method step (2), keep the condition of 60～80 ℃ constant, the rotating speed dispersed with stirring of 1000～1500 rev/mins 2 hours; Then marginally add deionized water under stirring slowly, in batches, at every turn; When the viscosity of system obviously diminishes suddenly, remaining deionized water once can be added, continue to stir 30 minutes.
Operation principle of the present invention is: select the improved plant grease as basic demoulding material in the present invention, to carry out function composite with other kinds analog assistant, produces water base casting mold-releasing agent emulsion.The improved plant grease be the saturated or esters of unsaturated fatty acids that contains 18 carbon through the product of modification, comprise that linolenic acid methyl esters, methyl linoleate, methyl oleate and linolenic acid ethyl ester, ethyl linoleate, ethyl oleate are through the product of epoxidation, hydroformylation gained.As through epoxidised epoxy methyl linoleate, epoxy ethyl linoleate, epoxyoleic acid methyl esters, epoxyoleic acid ethyl ester, methyl epoxy stearate, epoxystearic acid ethyl ester etc.Also have formyl methyl linoleate through hydroformylation, formyl ethyl linoleate, formyl methyl oleate, formyl ethyl oleate, formyl methyl stearate, formyl ethyl stearte etc.The consumption of improved plant grease is 20～70%, and its preferable amount is 30～45%.The emulsifying agent that can adopt has: condensation compound of alkyl phenol and epoxy ethane, aliphatic acid and ethylene oxide condensate, fatty alcohol and ethylene oxide condensate, castor oil and ethylene oxide condensate, polyoxyethylene sorbitan fatty acid ester etc., the preferred polyoxyethylene 20 sorbitan monooleate that adopts, its consumption is 8～40%, and preferable amount is 10～15%.
With respect to scheme of the prior art, advantage of the present invention is:
The present invention adopts improved plant grease and emulsifying agent and some auxiliary agent to carry out emulsion reaction, obtains the environment-friendly type casting mold-releasing agent that the present invention needs.The casting mold-releasing agent that the present invention produces not only has good stripping result, and has significantly reduced the pollution to environment, and has saved the use of petroleum-type non-renewable resources products.
The specific embodiment
Below in conjunction with specific embodiment, such scheme is described further.Should be understood that these embodiment are not limited to limit the scope of the invention for explanation the present invention.The implementation condition that adopts in embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in normal experiment.
The releasing agent that adopts in following examples is counted with the percentage by weight of its raw material components:
All the other are deionized water.
Prepare in accordance with the following steps releasing agent:
(1) the improved plant grease is added emulsifying kettle, slowly be heated to 70 ℃, then adding polyoxyethylene 20 sorbitan monooleate, the rotating speed dispersed with stirring of 200 rev/mins 1 hour.
(2) first add 1/6 of total Water in above-mentioned system, keep the condition of 70 ℃ constant, the rotating speed dispersed with stirring of 1000～1500 rev/mins 2 hours.Slowly, in batches, marginally add deionized water under stirring, requirement must the water of adding fully and system miscible after, could add again water.When the viscosity of system obviously diminishes suddenly, last deionized water all once can be added, continue to stir and namely made A in 30 minutes, and be cooled to 30 ℃.
(3) in dispersed with stirring, with a small amount of water with anticorrisive agent, ethanol, antioxidant, that triethanolamine is mixed with solution B is stand-by.
(4) solution B is joined in above-mentioned cooling A, then stirred 30 minutes.Filter, measure, pack, put in storage and get final product.Below specific embodiments of the invention.
The preparation of embodiment 1 environment-friendly type casting mold-releasing agent
The composition of raw materials that the present embodiment adopts is:
Concrete preparation process:
(1) the 350kg methyl epoxy stearate is added emulsifying kettle, slowly be heated to 70 ℃, then add the 120kg polyoxyethylene 20 sorbitan monooleate, the rotating speed dispersed with stirring of 200 rev/mins 1 hour.
(2) first add 79kg water in above-mentioned system, keep the condition of 70 ℃ constant, the rotating speed dispersed with stirring of 1000～1500 rev/mins 2 hours.Slowly, in batches, marginally add deionized water under stirring, requirement must the water of adding fully and system miscible after, could add again water.When the viscosity of system obviously diminishes suddenly, can deionized water all once add when last, continue to stir and namely made A in 30 minutes, and be cooled to 30 ℃.
(3) in dispersed with stirring, with a small amount of water with 8kg anticorrisive agent, 25kg ethanol, 10kg antioxidant, that the 15kg triethanolamine is mixed with solution B is stand-by.Solution B is joined in above-mentioned cooling A, then stirred 30 minutes.Filter, measure, pack, put in storage.
The preparation of embodiment 2 environment-friendly type casting mold-releasing agents
The composition of raw materials that the present embodiment adopts is:
Concrete preparation process:
(1) 300kg epoxystearic acid ethyl ester is added emulsifying kettle, slowly be heated to 70 ℃, then add the 100kg polyoxyethylene 20 sorbitan monooleate, the rotating speed dispersed with stirring of 200 rev/mins 1 hour.
(2) first add 90kg water in above-mentioned system, keep the condition of 70 ℃ constant, the rotating speed dispersed with stirring of 1000～1500 rev/mins 2 hours.Slowly, in batches, marginally add deionized water under stirring, requirement must the water of adding fully and system miscible after, could add again water.When the viscosity of system obviously diminishes suddenly, can deionized water all once add when last, continue to stir and namely made A in 30 minutes, and be cooled to 30 ℃.
(3) in dispersed with stirring, with a small amount of water with 8kg anticorrisive agent, 25kg ethanol, 10kg antioxidant, that the 15kg triethanolamine is mixed with solution B is stand-by.Solution B is joined in above-mentioned cooling A, then stirred 30 minutes.Filter, measure, pack, put in storage.
The preparation of embodiment 3 environment-friendly type casting mold-releasing agents
The composition of raw materials that the present embodiment adopts is:
Concrete preparation process:
(1) 400kg formyl ethyl stearte is added emulsifying kettle, slowly be heated to 70 ℃, then add the 130kg polyoxyethylene 20 sorbitan monooleate, the rotating speed dispersed with stirring of 200 rev/mins 1 hour.
(2) first add 68kg water in above-mentioned system, keep the condition of 70 ℃ constant, the rotating speed dispersed with stirring of 1000～1500 rev/mins 2 hours.Slowly, in batches, marginally add deionized water under stirring, requirement must the water of adding fully and system miscible after, could add again water.When the viscosity of system obviously diminishes suddenly, can deionized water all once add when last, continue to stir and namely made A in 30 minutes, and be cooled to 30 ℃.
(3) in dispersed with stirring, with a small amount of water with 10kg anticorrisive agent, 25kg ethanol, 10kg antioxidant, that the 15kg triethanolamine is mixed with solution B is stand-by.Solution B is joined in above-mentioned cooling A, then stirred 30 minutes.Filter, measure, pack, put in storage.
The preparation of embodiment 4 environment-friendly type casting mold-releasing agents
The composition of raw materials that the present embodiment adopts is:
Concrete preparation process:
(1) 380kg formyl ethyl oleate is added emulsifying kettle, slowly be heated to 70 ℃, then add the 100kg polyoxyethylene 20 sorbitan monooleate, the rotating speed dispersed with stirring of 200 rev/mins 1 hour.
(2) first add 77kg water in above-mentioned system, keep the condition of 70 ℃ constant, the rotating speed dispersed with stirring of 1000～1500 rev/mins 2 hours.Slowly, in batches, marginally add deionized water under stirring, requirement must the water of adding fully and system miscible after, could add again water.When the viscosity of system obviously diminishes suddenly, can deionized water all once add when last, continue to stir and namely made A in 30 minutes, and be cooled to 30 ℃.
(3) in dispersed with stirring, with a small amount of water with 10kg anticorrisive agent, 25kg ethanol, 10kg antioxidant, that the 15kg triethanolamine is mixed with solution B is stand-by.Solution B is joined in above-mentioned cooling A, then stirred 30 minutes.Filter, measure, pack, put in storage.
The Performance of embodiment 5 environment-friendly type casting mold-releasing agents and plain edition casting mold-releasing agent
The detection method of demolding performace is: the environment-friendly type casting mold-releasing agent of plain edition casting mold-releasing agent and each embodiment production is diluted according to a certain percentage with deionized water, dilution is evenly sprayed on the smooth steel plate of the surface finish that has been heated to 280 ℃, within 5 seconds, taking-up afterwards in 15 seconds in the aluminium liquid of the partial insertion melting that has sprayed releasing agent of steel plate, the viewing test surface of steel plate glues the situation of aluminium.
Estimate the method for demolding performace: estimate demolding performace with the situation of change of soaking aluminium before and after test plate quality, soak the demolding performace that mass penalty is few after aluminium good, soak the demolding performace that mass penalty is many after aluminium poor.When soaking aluminium, the quality of steel plate is not m1, soaks that plate quality is m2 after aluminium, and soaking the percentage that plate quality increases before and after aluminium is G=(m2-m1)/m1 * 100%.When G≤0.1%, demolding performace is evaluated as excellent; When 0.1%＜G≤0.5%, demolding performace is evaluated as good; When G＞0.5%, during demolding performace is evaluated as.Result is as shown in table 1.
Table 1 environment-friendly type casting mold-releasing agent and plain edition casting mold-releasing agent performance comparison sheet
Above-mentioned example only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the person skilled in the art can understand content of the present invention and implement according to this, can not limit protection scope of the present invention with this.All equivalent transformations that Spirit Essence is done according to the present invention or modification are within all should being encompassed in protection scope of the present invention.
Claims (7)
1. environment-friendly type casting mold-releasing agent is characterized in that described releasing agent counts with the percentage by weight of its component:
Improved plant grease 30 ~ 45%;
Emulsifying agent 8 ~ 40%;
Anticorrisive agent 0.3 ~ 2%;
Antioxidant 0.5 ~ 2%;
Ethanol 2 ~ 5%;
Triethanolamine 1 ~ 3%;
All the other are deionized water;
Wherein said improved plant grease is to get through epoxidation modification or hydroformylation modification by the vegetable fat that will be selected from following one or more, and described vegetable fat is selected from linolenic acid methyl esters, methyl linoleate, methyl oleate and linolenic acid ethyl ester, ethyl linoleate, ethyl oleate; Described antioxidant is selected from ditert-butylhydro quinone, butylated hydroxy anisole, dibutyl hydroxy toluene.
2. environment-friendly type casting mold-releasing agent according to claim 1 is characterized in that described releasing agent counts with the percentage by weight of its component:
Improved plant grease 30 ~ 45%;
Emulsifying agent 10 ~ 15%;
Anticorrisive agent 0.3 ~ 2%;
Antioxidant 0.5 ~ 2%;
Ethanol 2 ~ 5%;
Triethanolamine 1 ~ 3%;
All the other are deionized water.
3. environment-friendly type casting mold-releasing agent according to claim 1 is characterized in that described improved plant grease is selected from one or more any combination of epoxy methyl linoleate, epoxy ethyl linoleate, epoxyoleic acid methyl esters, epoxyoleic acid ethyl ester, methyl epoxy stearate, epoxystearic acid ethyl ester, formyl methyl linoleate, formyl ethyl linoleate, formyl methyl oleate, formyl ethyl oleate, formyl methyl stearate, formyl ethyl stearte.
4. environment-friendly type casting mold-releasing agent according to claim 1, is characterized in that described emulsifying agent is selected from condensation compound of alkyl phenol and epoxy ethane, aliphatic acid and ethylene oxide condensate, fatty alcohol and ethylene oxide condensate, castor oil and ethylene oxide condensate, polyoxyethylene sorbitan fatty acid ester.
5. environment-friendly type casting mold-releasing agent according to claim 1, is characterized in that described anticorrisive agent is selected from sorbic acid, benzoic acid, Sodium Benzoate, calcium propionate.
6. the preparation method of an environment-friendly type casting mold-releasing agent claimed in claim 1 is characterized in that said method comprising the steps of:
(1) the improved plant grease is added emulsifying kettle, slowly be heated to 60～80 ℃, then add emulsifying agent to become homodisperse oil phase the rotating speed dispersed with stirring of 200 ~ 300 rev/mins;
(2) obtain to add deionized water in homodisperse oil phase in step (1) in batches, keep the condition of 60～80 ℃ constant, form solution A the rotating speed dispersed with stirring of 1000 ~ 1500 rev/mins, solution A is cooled to 20～35 ℃;
(3) with deionized water, anticorrisive agent, ethanol, antioxidant, triethanolamine are mixed with solution B, solution B is joined in cooling solution A, filter through stirring and form the environment-friendly type casting mold-releasing agent.
7. preparation method according to claim 6 is characterized in that first adding in described method step (2) deionized water of deionized water total amount 1/6 keeping the condition of 60～80 ℃ constant, the rotating speed dispersed with stirring of 1000 ~ 1500 rev/mins 2 hours; Then marginally add deionized water under stirring slowly, in batches, at every turn; When the viscosity of system obviously diminishes suddenly, remaining deionized water once can be added at last, continue to stir 30 minutes.
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| CN103418741A (en) * | 2012-05-24 | 2013-12-04 | 上海立汰新模具材料有限公司 | Release agent for aluminium alloy die-casting and application thereof |
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| CN103567375B (en) * | 2013-10-09 | 2015-07-15 | 东莞市鹏润化工产品有限公司 | Non-silicone magnesium alloy pressure casting mould release agent |
| CN103831393B (en) * | 2013-12-30 | 2016-05-25 | 上海福岛新材料科技有限公司 | A kind of water-based aluminium alloy compression casting releasing agent and preparation method thereof |
| CN104759578B (en) * | 2015-04-16 | 2017-03-29 | 西南大学 | A kind of releasing agent and its using method |
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| CN106827325A (en) * | 2016-12-25 | 2017-06-13 | 常州创索新材料科技有限公司 | A kind of preparation method of green water-soluble mold-release agent |
| CN107384533A (en) * | 2017-06-07 | 2017-11-24 | 常州诺丁精密机械制造有限公司 | A kind of preparation method of casting mold-releasing agent |
| CN107952930A (en) * | 2017-12-04 | 2018-04-24 | 苏州市宽道模具机械有限公司 | A kind of releasing agent and preparation method thereof |
| JP6746799B2 (en) * | 2018-06-05 | 2020-09-02 | ユシロ化学工業株式会社 | Release agent composition and die casting method |
| CN109175224B (en) * | 2018-09-06 | 2020-07-31 | 安美科技股份有限公司 | Silicon-oil-free water-based zinc alloy die-casting release agent |
| CN112387923A (en) * | 2020-10-21 | 2021-02-23 | 重庆市宇红轨道车辆配件有限公司 | Heat-resistant release agent for brake shoe manufacturing and preparation method thereof |
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| CN1003217B (en) * | 1986-05-03 | 1989-02-08 | 国营红山铸造厂 | Ignition device for multi-functional liquid fuel coal furnace |
| CN100532518C (en) * | 2001-10-26 | 2009-08-26 | 日清奥利友集团株式会社 | Lubricating oil composition |
| CN1261255C (en) * | 2003-12-11 | 2006-06-28 | 熊杰 | Releasing agent containing water-based greensand molding |
| CN101838581A (en) * | 2009-03-19 | 2010-09-22 | 张伟 | Mould release agent |
| CN101812362A (en) * | 2009-12-18 | 2010-08-25 | 河南省绿韵建材有限公司 | Emulsified paraffin release agent and manufacturing method thereof |
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