CN113980724A - Emulsified mold release oil and preparation method thereof - Google Patents
Emulsified mold release oil and preparation method thereof Download PDFInfo
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- CN113980724A CN113980724A CN202111258895.5A CN202111258895A CN113980724A CN 113980724 A CN113980724 A CN 113980724A CN 202111258895 A CN202111258895 A CN 202111258895A CN 113980724 A CN113980724 A CN 113980724A
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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
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/045—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and non-macromolecular compounds
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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
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
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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
- C10M2207/16—Naphthenic acids
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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
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
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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
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/36—Release agents or mold release agents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention provides emulsified demoulding oil and a preparation method thereof, and relates to the technical field of building concrete pouring. The emulsified demoulding oil provided by the invention comprises the following components in percentage by mass: 70-85% of second-line-reduced extract oil, 5-12% of emulsified antirust composite agent and 15-30% of water; the emulsified antirust combined agent comprises the following components: naphthenic acid, alkali, an emulsion antirust agent and an emulsion stabilizer. The emulsified demoulding oil prepared by the technical scheme of the invention has light color, excellent storage stability, rust resistance, strong demoulding force and no adhesion, does not cause rancidity, mildew and blackening because of not containing vegetable oil, does not influence the color of the surface of concrete, and has low cost.
Description
Technical Field
The invention relates to the technical field of building concrete pouring, in particular to emulsified demoulding oil and a preparation method thereof.
Background
In concrete pouring, the concrete product is adhered to the template, which not only easily damages the product, but also causes difficulty in removing and cleaning the template, so that the use of the mold release oil is important in producing the concrete product. The prior domestic demoulding oil mainly has three types, the first type is soap type demoulding oil which is formed by adding alkali into animals and plants for saponification, the adhesion force of the saponification liquid of the demoulding oil with a template and a steel mould plate is small, and the saponification liquid of the demoulding oil is easy to fall off after friction, so that the demoulding effect cannot be achieved, and the surface of the steel mould is easy to rust; and the demoulding oil contains vegetable oil, which is easy to cause rancidity, mildew and blackening and influences the color of the surface of concrete. The second major type is a mold release oil of oil type, the main component of which is machine oil, used machine oil or a mixture of both, which has disadvantages of contaminating the concrete product and also has disadvantages of causing pulverization of the concrete surface due to saponification reaction with alkali in cement, thereby decreasing the durability of the concrete. The third type is a combination of the first two types, such as edible vegetable oil foot soap used in chinese patent (publication No. CN1021972C) and salad oil used in chinese patent (publication No. CN1975270A), which still cannot overcome the above disadvantages.
Disclosure of Invention
The invention mainly aims to provide emulsified mold release oil, and aims to solve the problems that the conventional mold release oil is easy to layer, is easy to rancidity and is low in durability.
In order to achieve the above object, the present invention provides, in a first aspect, an emulsified mold release oil comprising, by mass: 70-85% of second-line-reduced extract oil, 5-12% of emulsified antirust composite agent and 15-30% of water;
the emulsified antirust combined agent comprises the following components: naphthenic acid, alkali, an emulsion antirust agent and an emulsion stabilizer.
According to the technical scheme, the emulsified antirust composition agent, the two-line-reduction extract oil and water are mixed to prepare the emulsified demoulding oil, so that the raw material is low in price and the manufacturing cost is low.
The emulsified demoulding oil prepared by the invention is a stable and uniform white emulsion, and compared with the existing first, second and third types of demoulding oil, the emulsified demoulding oil is not layered, has good emulsibility and storage stability, good appearance and light color, and can not pollute the surface of a concrete member. The emulsified demoulding oil does not contain vegetable oil, so that rancidity, mildew and blackening are avoided, and the color of the surface of concrete is not influenced. In addition, the emulsified demoulding oil contains the antirust agent, and can meet the demoulding requirements of concrete prefabricated parts and cement products.
As a preferred embodiment of the emulsified mold release oil of the present invention, the reduced second-line extract oil is a product obtained by extracting reduced second-line oil with a furfural solvent.
As a preferred embodiment of the emulsified mold release oil of the invention, the emulsified rust-proof combination agent comprises the following components in percentage by mass: 70-85% of naphthenic acid, 15-30% of alkali, 1-3% of emulsion antirust agent and 1-3% of emulsion stabilizer.
Repeated tests show that the emulsified demoulding oil prepared from the emulsified antirust composition prepared according to the proportion has good antirust and demoulding effects, and the appearance and the texture of the emulsified demoulding oil cannot be influenced.
As a preferred embodiment of the emulsified mould-release oil according to the invention, the naphthenic acid has an acid number of 175-270mgKOH/g and an inorganic salt content of not more than 1 wt.%, wherein chloride is not more than 0.3 wt.%.
In a preferred embodiment of the emulsified mold release oil of the present invention, the base is at least one of sodium hydroxide and zinc hydroxide.
In a preferred embodiment of the emulsified mold release oil of the present invention, the emulsified rust inhibitor is sorbitan monooleate.
As a preferred embodiment of the emulsified mold release oil according to the present invention, the emulsion stabilizer is at least one of triethanolamine, ethanol, and isopropanol.
In a second aspect, the invention also provides a method for preparing the emulsified demoulding oil, which comprises the following steps: heating the second-order-reduction extract oil to 50-60 ℃, adding an emulsified antirust composition agent and water, stirring for 1-2h, cooling, and filtering to obtain the emulsified demoulding oil.
As a preferable embodiment of the method for producing the emulsified mold-releasing oil of the present invention, the method for producing the emulsified rust-preventive combination agent comprises the steps of: and (2) reacting naphthenic acid and alkali at 40 ℃ for 0.5-1.5h to obtain sodium naphthenate and water, continuously adding the emulsified antirust agent and the emulsified stabilizer, and stirring for 1-2h to obtain the antirust combined agent.
Compared with the prior art, the invention has the beneficial effects that:
according to the technical scheme, the emulsified demoulding oil is prepared by mixing the emulsified antirust combined agent, the two-line-reduced extract oil and water, and the raw materials are low in price and low in manufacturing cost.
The emulsified demoulding oil prepared by the invention is a stable and uniform white emulsion, and compared with the existing first, second and third types of demoulding oil, the emulsified demoulding oil is not layered, has good emulsibility and storage stability, good appearance and light color, and can not pollute the surface of a concrete member. The emulsified demoulding oil does not contain vegetable oil, so that rancidity, mildew and blackening are avoided, and the color of the surface of concrete is not influenced. In addition, the emulsified demoulding oil contains the antirust agent, and can meet the demoulding requirements of concrete prefabricated parts and cement products.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to the following specific examples.
Example 1
The emulsified antirust combined agent comprises the following components in parts by weight: 80% of naphthenic acid, 17% of alkali, 1.5% of emulsion antirust agent and 1.5% of emulsion stabilizer;
wherein the acid value of the naphthenic acid is 175-270mgKOH/g, the content of inorganic salt is not more than 1 wt.%, and the chloride is not more than 0.3 wt.%;
the alkali is sodium hydroxide;
the emulsified antirust agent is sorbitan monooleate;
the emulsion stabilizer is triethanolamine.
The preparation method of the emulsified antirust combined agent comprises the following steps: and (2) reacting naphthenic acid and alkali at 40 ℃ for 0.5h to obtain sodium naphthenate and water, continuously adding an emulsion antirust agent and an emulsion stabilizer, and stirring for 1h to obtain the antirust combined agent.
Example 2
The emulsified demoulding oil of the embodiment comprises the following components in percentage by mass: 70 percent of second-line extract oil, 6 percent of the emulsified antirust combined agent prepared in example 1 and 24 percent of water.
The method of preparing the emulsified release oil of this example includes the steps of: heating the second-line-decreasing extract oil to 50-60 ℃, adding an emulsified antirust composition agent and water, stirring for 1h, cooling and filtering to obtain the emulsified demoulding oil.
Example 3
The emulsified demoulding oil of the embodiment comprises the following components in percentage by mass: 73 percent of second-line extract oil, 6 percent of the emulsified antirust combined agent prepared in example 1 and 21 percent of water.
The emulsified release oil of this example was prepared in the same manner as in example 2.
Example 4
The emulsified demoulding oil of the embodiment comprises the following components in percentage by mass: 77% of second-line extract oil, 6% of the emulsified antirust combined agent prepared in example 1 and 17% of water.
The emulsified release oil of this example was prepared in the same manner as in example 2.
Example 5
The emulsified demoulding oil of the embodiment comprises the following components in percentage by mass: 79 percent of second-line extract oil, 6 percent of emulsified antirust combined agent prepared in example 1 and 15 percent of water.
The emulsified release oil of this example was prepared in the same manner as in example 2.
Comparative example 1
The emulsified demoulding oil of the comparative example comprises the following components in percentage by mass: 69 percent of second-line extract oil, 6 percent of the emulsified antirust combined agent prepared in example 1 and 25 percent of water.
The emulsified release oil of this comparative example was prepared in the same manner as in example 2.
Comparative example 2
The emulsified demoulding oil of the comparative example comprises the following components in percentage by mass: 90% of second-line extract oil, 4% of the emulsified antirust combination prepared in example 1 and 6% of water.
The emulsified release oil of this comparative example was prepared in the same manner as in example 2.
Comparative example 3
The emulsified demoulding oil of the comparative example comprises the following components in percentage by mass: 82% of second-line extract oil, 15% of the emulsified antirust combined agent prepared in example 1 and 13% of water.
The emulsified release oil of this comparative example was prepared in the same manner as in example 2.
The results of the properties of the emulsified mold-release oils prepared in examples 2 to 5 and comparative examples 1 to 3 are shown in Table 1 below.
TABLE 1 Performance results for emulsified mold release oils prepared in examples 2-5 and comparative examples 1-3
| Storage stability | Demolding force/N | Corrosion of the mold | Sticking condition of die | |
| Example 2 | No precipitation and no delamination | 1.04 | Non-rust | No adhesion |
| Example 3 | No precipitation and no delamination | 1.03 | Non-rust | No adhesion |
| Example 4 | No precipitation and no delamination | 1.16 | Non-rust | No adhesion |
| Example 5 | No precipitation and no delamination | 1.12 | Non-rust | No adhesion |
| Comparative example 1 | Precipitating and demixing | 5.85 | Rusting | With adhesion |
| Comparative example 2 | Precipitating and demixing | 5.28 | Rusting | With adhesion |
| Comparative example 3 | Precipitating and demixing | 5.56 | Rusting | With adhesion |
From the results in Table 1, it is understood that the addition amount of each raw material constituting the emulsified mold-releasing oil directly affects the performance effect of the emulsified mold-releasing oil when the components of the emulsified rust preventive composition are not changed. When the addition amount of each raw material for composing the emulsified demoulding oil is strictly added according to the range limited by the application, the prepared emulsified demoulding oil has no precipitation and no delamination, the surface of the material after use can not be rusted, the adhesion phenomenon can not occur, and the demoulding force of the emulsified demoulding oil is consistent. On the contrary, when the addition amount of each raw material constituting the emulsified mold release oil exceeds the range defined in the present application, the prepared emulsified mold release oil precipitates, delaminates, and rust occurs on the surface of the material after use, and the blocking phenomenon occurs, and the mold release force of the emulsified mold release oil increases.
Example 6
The emulsified antirust combined agent comprises the following components in parts by weight: 78% of naphthenic acid, 20% of alkali, 1% of emulsion antirust agent and 1% of emulsion stabilizer;
wherein the acid value of the naphthenic acid is 175-270mgKOH/g, the content of inorganic salt is not more than 1 wt.%, and the chloride is not more than 0.3 wt.%;
the alkali is zinc hydroxide;
the emulsified antirust agent is sorbitan monooleate;
the emulsion stabilizer is ethanol.
The preparation method of the emulsified antirust combined agent comprises the following steps: and (2) reacting naphthenic acid and alkali at 40 ℃ for 0.5h to obtain sodium naphthenate and water, continuously adding an emulsion antirust agent and an emulsion stabilizer, and stirring for 1h to obtain the antirust combined agent.
Example 7
The emulsified demoulding oil of the embodiment comprises the following components in percentage by mass: 73 percent of second-line extract oil, 8 percent of the emulsified antirust combined agent prepared in example 6 and 19 percent of water.
The method of preparing the emulsified release oil of this example includes the steps of: heating the second-line-decreasing extract oil to 50-60 ℃, adding an emulsified antirust composition agent and water, stirring for 1h, cooling and filtering to obtain the emulsified demoulding oil.
Example 8
The emulsified antirust combined agent comprises the following components in parts by weight: 78% of naphthenic acid, 19% of alkali, 1% of emulsion antirust agent and 2% of emulsion stabilizer;
wherein the acid value of the naphthenic acid is 175-270mgKOH/g, the content of inorganic salt is not more than 1 wt.%, and the chloride is not more than 0.3 wt.%;
the alkali is zinc hydroxide;
the emulsified antirust agent is sorbitan monooleate;
the emulsion stabilizer is isopropanol.
The preparation method of the emulsified antirust combined agent comprises the following steps: and (2) reacting naphthenic acid and alkali at 40 ℃ for 0.5h to obtain sodium naphthenate and water, continuously adding an emulsion antirust agent and an emulsion stabilizer, and stirring for 1h to obtain the antirust combined agent.
Example 9
The emulsified demoulding oil of the embodiment comprises the following components in percentage by mass: 73 percent of second-line extract oil, 12 percent of emulsified antirust combined agent prepared in example 8 and 15 percent of water.
The method of preparing the emulsified release oil of this example includes the steps of: heating the second-line-decreasing extract oil to 50-60 ℃, adding an emulsified antirust composition agent and water, stirring for 1h, cooling and filtering to obtain the emulsified demoulding oil.
Example 10
The emulsified antirust combined agent comprises the following components in parts by weight: 81% of naphthenic acid, 15% of alkali, 2% of emulsion antirust agent and 2% of emulsion stabilizer;
wherein the acid value of the naphthenic acid is 175-270mgKOH/g, the content of inorganic salt is not more than 1 wt.%, and the chloride is not more than 0.3 wt.%;
the alkali is sodium hydroxide;
the emulsified antirust agent is sorbitan monooleate;
the emulsion stabilizer is isopropanol.
The preparation method of the emulsified antirust combined agent comprises the following steps: and (2) reacting naphthenic acid and alkali at 40 ℃ for 0.5h to obtain sodium naphthenate and water, continuously adding an emulsion antirust agent and an emulsion stabilizer, and stirring for 1h to obtain the antirust combined agent.
Example 11
The emulsified demoulding oil of the embodiment comprises the following components in percentage by mass: 78% of second-line extract oil, 5% of the emulsified antirust combined agent prepared in example 10 and 17% of water.
The method of preparing the emulsified release oil of this example includes the steps of: heating the second-line-decreasing extract oil to 50-60 ℃, adding an emulsified antirust composition agent and water, stirring for 1h, cooling and filtering to obtain the emulsified demoulding oil.
Example 12
The emulsified antirust combined agent comprises the following components in parts by weight: 81% of naphthenic acid, 15% of alkali, 3% of emulsion antirust agent and 1% of emulsion stabilizer;
wherein the acid value of the naphthenic acid is 175-270mgKOH/g, the content of inorganic salt is not more than 1 wt.%, and the chloride is not more than 0.3 wt.%;
the alkali is sodium hydroxide;
the emulsified antirust agent is sorbitan monooleate;
the emulsion stabilizer is isopropanol.
The preparation method of the emulsified antirust combined agent comprises the following steps: and (2) reacting naphthenic acid and alkali at 40 ℃ for 0.5h to obtain sodium naphthenate and water, continuously adding an emulsion antirust agent and an emulsion stabilizer, and stirring for 1h to obtain the antirust combined agent.
Example 13
The emulsified demoulding oil of the embodiment comprises the following components in percentage by mass: 78% of second-line extract oil, 7% of the emulsified antirust combined agent prepared in example 12 and 15% of water.
The method of preparing the emulsified release oil of this example includes the steps of: heating the second-line-decreasing extract oil to 50-60 ℃, adding an emulsified antirust composition agent and water, stirring for 1h, cooling and filtering to obtain the emulsified demoulding oil.
Example 14
The emulsified antirust combined agent comprises the following components in parts by weight: 83% of naphthenic acid, 15% of alkali, 1% of emulsion antirust agent and 1% of emulsion stabilizer;
wherein the acid value of the naphthenic acid is 175-270mgKOH/g, the content of inorganic salt is not more than 1 wt.%, and the chloride is not more than 0.3 wt.%;
the alkali is sodium hydroxide;
the emulsified antirust agent is sorbitan monooleate;
the emulsion stabilizer is isopropanol.
The preparation method of the emulsified antirust combined agent comprises the following steps: and (2) reacting naphthenic acid and alkali at 40 ℃ for 0.5h to obtain sodium naphthenate and water, continuously adding an emulsion antirust agent and an emulsion stabilizer, and stirring for 1h to obtain the antirust combined agent.
Example 15
The emulsified demoulding oil of the embodiment comprises the following components in percentage by mass: 76% of second-line extract oil, 9% of the emulsified antirust composition prepared in example 14 and 15% of water.
The method of preparing the emulsified release oil of this example includes the steps of: heating the second-line-decreasing extract oil to 50-60 ℃, adding an emulsified antirust composition agent and water, stirring for 1h, cooling and filtering to obtain the emulsified demoulding oil.
The results of the properties of the emulsified mold-releasing oils prepared in examples 7, 9, 11, 13, and 15, which were prepared without coating the emulsified mold-releasing oil as a control test group, are shown in the following table 2.
TABLE 2 Performance results for the emulsified release oils prepared in examples 7, 9, 11, 13, 15
| Storage stability | Demolding force/N | Corrosion of the mold | Sticking condition of die | |
| Example 7 | No precipitation and no delamination | 1.08 | Non-rust | No adhesion |
| Example 9 | No precipitation and no delamination | 1.10 | Non-rust | No adhesion |
| Example 11 | No precipitation and no delamination | 1.00 | Non-rust | No adhesion |
| Example 13 | No precipitation and no delamination | 1.02 | Non-rust | No adhesion |
| Example 15 | No precipitation and no delamination | 1.05 | Non-rust | No adhesion |
| Uncoated release oil | - | 855 | Severe rusting | Severe stickiness |
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. The emulsified demoulding oil is characterized by comprising the following components in percentage by mass: 70-85% of second-line-reduced extract oil, 5-12% of emulsified antirust composite agent and 15-30% of water;
the emulsified antirust combined agent comprises the following components: naphthenic acid, alkali, an emulsion antirust agent and an emulsion stabilizer.
2. The emulsified mold release oil of claim 1 wherein the reduced second-line extract oil is a product obtained by furfural solvent extraction of reduced second-line oil.
3. The emulsified mold release oil of claim 1, wherein the emulsified rust inhibiting composition comprises, in mass percent: 70-85% of naphthenic acid, 15-30% of alkali, 1-3% of emulsion antirust agent and 1-3% of emulsion stabilizer.
4. The emulsified release oil of claim 1 wherein the naphthenic acid has an acid number of 175-270mgKOH/g and an inorganic salt content of no more than 1 wt.%, and wherein the chloride content is no more than 0.3 wt.%.
5. The emulsified release oil of claim 1 wherein the base is at least one of sodium hydroxide and zinc hydroxide.
6. The emulsified mold release oil of claim 1, wherein the emulsified rust inhibitor is sorbitan monooleate.
7. The emulsified release oil of claim 1 wherein the emulsion stabilizer is at least one of triethanolamine, ethanol, isopropanol.
8. A process for the preparation of an emulsified mould-release oil according to any of claims 1 to 7, characterised in that it comprises the following steps: heating the second-order-reduction extract oil to 50-60 ℃, adding an emulsified antirust composition agent and water, stirring for 1-2h, cooling, and filtering to obtain the emulsified demoulding oil.
9. The method of preparing the emulsified mold release oil according to claim 8, wherein the method of preparing the emulsified rust inhibitive composition comprises the steps of: and (2) reacting naphthenic acid and alkali at 40 ℃ for 0.5-1.5h to obtain sodium naphthenate and water, continuously adding the emulsified antirust agent and the emulsified stabilizer, and stirring for 1-2h to obtain the antirust combined agent.
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|---|---|---|---|---|
| US4609570A (en) * | 1982-03-25 | 1986-09-02 | Societe Anonyme Chryso | Release composition for hydraulic bonding materials, method for facilitating unmolding of hydraulic bonding materials from molds, and method for casting molded pre-formed articles of hydraulic bonding materials |
| CN85105845A (en) * | 1985-07-31 | 1987-01-28 | 化学工业部化肥工业研究所 | Water soluble naphthenate emulsion and its preparing process |
| CN106190512A (en) * | 2016-07-06 | 2016-12-07 | 中建商品混凝土有限公司 | A kind of concrete water-based release agent and preparation method thereof |
| CN106590894A (en) * | 2016-11-29 | 2017-04-26 | 曲靖师范学院 | Low-viscosity concrete release agent and preparation method thereof |
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