CN111044337B - Artificial oil stain and preparation method and application thereof - Google Patents
Artificial oil stain and preparation method and application thereof Download PDFInfo
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- CN111044337B CN111044337B CN201911334698.XA CN201911334698A CN111044337B CN 111044337 B CN111044337 B CN 111044337B CN 201911334698 A CN201911334698 A CN 201911334698A CN 111044337 B CN111044337 B CN 111044337B
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Abstract
The invention provides artificial oil stain and a preparation method and application thereof, and relates to the field of industrial cleaning, wherein the artificial oil stain is mainly prepared by mixing mechanical oil, lubricating grease and a thickening agent and then carrying out oxidation treatment; wherein the lubricating grease comprises liquid paraffin, barium petroleum sulfonate, stearic acid and industrial vaseline. The artificial oil stain prepared by mixing the raw materials and performing oxidation treatment realizes a synergistic effect, has the characteristics of moderate viscosity and good adhesive force, and can well simulate oil stains generated after automobile mechanical equipment operates for a period of time.
Description
Technical Field
The invention relates to the field of industrial cleaning, in particular to artificial oil stain and a preparation method and application thereof.
Background
With the increasing of the automobile holding capacity, the daily cleaning and maintenance of the automobile become an important part of the automobile beauty, various cleaning agent products are developed, an important index for judging the performance of the cleaning agent is the cleaning rate, and the cleaning rate test refers to the cleaning capacity of the cleaning agent on dirt under certain conditions, and is generally expressed by percentage. The existing organic solvent type cleaning agent basically completes the link of replacing from non-environment-friendly components to environment-friendly components, so that the key of the preparation research of the existing cleaning agent is that how to reach the cleaning rate of more than 80 percent on the premise of forbidding the use of environment-friendly effects and toxic and harmful substances.
After mechanical equipment of an automobile runs for a period of time, part of substances such as lubricating oil, gasoline engine oil, air dust, lead and the like are oxidized into thick and gel-like substances under the conditions of high temperature and air, and then are further aged into complex polymers, which is the reason for the generation of common mechanical oil stains. Due to different accumulation time and different components of the oil stains, the performance of the cleaning agent cannot be accurately reflected by a conventional cleaning rate testing method. Therefore, the existing cleaning rate testing method requires providing a reliable artificial oil stain, can truly simulate the surface oil stain of automobile mechanical equipment, and can accurately distinguish the cleaning capabilities of different cleaning agents.
The existing industry lacks the standard of a cleaning agent applied to the oil stain of automobile equipment parts, and one important reason for the lack of the standard is that the standard-reliable artificial oil stain is lacked. The cleaning rate testing methods described in various enterprise standard documents are different, and the artificial oil stain synthesis methods are different, so that the method is not generally suitable for testing the cleaning agent for the oil stain of the parts of the automobile equipment. Due to the lack of standard oil stains, the result is that the cleaning agent generally has higher cleaning rate, but the actual application is greatly different from the test result. Meanwhile, the problems of poor repeatability, different oil stain viscosities prepared by repeated tests and different adhesive force are also solved in the existing artificial oil stain preparation method, and the cleaning rate is lower than 50% or higher than 95% or has no distinguishable cleaning rate gradient during testing, so that the fluctuation of repeated experimental data of the cleaning force is large during testing.
Therefore, the raw material composition and the preparation method of the conventional artificial oil stain are improved, the artificial oil stain with moderate viscosity and good adhesive force is researched and developed, the oil stain generated after the automobile mechanical equipment runs for a period of time can be better simulated, and the oil stain is applied to the test of the oil stain cleaning rate of the cleaning agent for the parts of the automobile equipment, so that the artificial oil stain becomes necessary and urgent.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The artificial oil stain is prepared by mixing machine oil, lubricating grease and a thickening agent and then carrying out oxidation treatment, the raw materials are mixed to realize a synergistic effect, and the prepared artificial oil stain has the effects of moderate viscosity and good adhesive force and can well simulate oil stains generated after automobile mechanical equipment runs for a period of time.
The second purpose of the invention is to provide a preparation method of the artificial oil stain.
The third purpose of the invention is to provide application of the artificial oil stain, and the artificial oil stain can be widely applied to the test of the oil stain cleaning rate of the cleaning agent for the parts of the automobile equipment.
The artificial oil stain is mainly prepared by mixing mechanical oil, lubricating grease and a thickening agent and then carrying out oxidation treatment;
the lubricating grease comprises liquid paraffin, barium petroleum sulfonate, stearic acid and industrial vaseline.
Further, the lubricating grease further comprises calcium-based grease;
preferably, the machine oil comprises at least one of 46# machine oil, 68# base oil and SF 15W/40;
more preferably, the machine oil comprises 46# machine oil and 68# base oil;
preferably, the thickener comprises at least one of alumina, diatomaceous earth and carbon black, preferably carbon black.
Further, the artificial oil stain is mainly prepared from the following raw materials in parts by weight: 45-140 parts of mechanical oil, 28-47 parts of lubricating grease and 8-12 parts of thickening agent;
preferably, the artificial oil stain is mainly prepared from the following raw materials in parts by weight: 45-110 parts of mechanical oil, 31-40 parts of lubricating grease and 9-10 parts of thickening agent;
preferably, the artificial oil stain is mainly prepared from the following raw materials in parts by weight: 55 parts of machine oil, 35 parts of lubricating grease and 10 parts of thickening agent.
Further, the artificial oil stain is mainly prepared from the following raw materials in parts by weight: 8-12 parts of liquid paraffin, 8-12 parts of barium petroleum sulfonate, 4-6 parts of stearic acid, 8-12 parts of industrial vaseline, 20-70 parts of 46# machine oil, 25-70 parts of 68# base oil, 8-12 parts of thickening agent and 0-5 parts of calcium-based lubricating grease;
preferably, the artificial oil stain is mainly prepared from the following raw materials in parts by weight: 9-10 parts of liquid paraffin, 9-10 parts of barium petroleum sulfonate, 4-5 parts of stearic acid, 8-10 parts of industrial vaseline, 20-50 parts of No. 46 mechanical oil, 25-60 parts of No. 68 base oil, 9-10 parts of a thickening agent and 2-5 parts of calcium-based lubricating grease;
preferably, the artificial oil stain is mainly prepared from the following raw materials in parts by weight: 10 parts of liquid paraffin, 10 parts of barium petroleum sulfonate, 5 parts of stearic acid, 8 parts of industrial vaseline, 25 parts of No. 46 machine oil, 30 parts of No. 68 base oil, 10 parts of a thickening agent and 2 parts of calcium-based lubricating grease.
The invention provides a preparation method of the artificial oil stain, which comprises the following steps:
the method comprises the steps of providing mixed oil stains containing machine oil, lubricating grease and a thickening agent after being heated and dissolved, and then carrying out oxidation treatment on the mixed oil stains to obtain the artificial oil stains.
Further, the heating and dissolving temperature is 120 ℃, and the temperature of the oxidation treatment is 180-260 ℃;
preferably, the time of the oxidation treatment is 12-48 h, and preferably 24 h;
preferably, the oxidation treatment is carried out under the condition of introducing air;
more preferably, in the oxidation treatment process, the air is introduced in an amount of 0.51 to 0.6L/min, preferably 0.55L/min.
Further, the step of oxidizing treatment comprises: and carrying out oxidation treatment on the mixed oil stain for 12-48 h at 180-260 ℃ under the condition of introducing air, wherein the introducing amount of the air is 0.51-0.6L/min.
Further, the preparation method also comprises a step of standing and aging, wherein the standing and aging is carried out after the oxidation treatment;
preferably, the standing and aging time is 12-48 h, and preferably 24 h.
Further, the preparation method comprises the following steps:
(a) and providing mixed oil stain: heating and dissolving machine oil, lubricating grease and a thickening agent to obtain mixed oil stain A;
(b) and oxidation treatment: carrying out oxidation treatment on the mixed oil stain obtained in the step (a) for 12-48 h at 180-260 ℃ under the condition of introducing air to obtain mixed oil stain B;
the air is introduced in an amount of 0.51-0.6L/min;
(c) and standing and aging treatment: and (c) standing and aging the mixed oil stain B obtained in the step (B) for 12-48 h to obtain the artificial oil stain.
The invention provides an application of the artificial oil stain automobile equipment part cleaning agent in testing of oil stain cleaning rate.
Compared with the prior art, the invention has the beneficial effects that:
the artificial oil stain provided by the invention is mainly prepared by mixing mechanical oil, lubricating grease and a thickening agent and then carrying out oxidation treatment; the prepared artificial oil stain is easy to scale, and the adhesive force of the artificial oil stain can be effectively improved; the mechanical oil can improve the miscibility of the lubricating grease in the artificial oil stain; the thickening agent can make the prepared artificial oil stain similar to oil stain carbon deposition, and improve the adhesion. The artificial oil stain prepared by oxidizing treatment after the raw materials are mixed realizes a synergistic effect, the prepared artificial oil stain has the advantages of moderate viscosity, good adhesive force and good repeatability, can well simulate the oil stain generated after the automobile mechanical equipment operates for a period of time, and can obtain the repeated cleaning rate of the same cleaning agent and the cleaning rate data of different cleaning agents with gradients.
The preparation method of the artificial oil stain comprises the following steps: providing mixed oil dirt containing mechanical oil, lubricating grease and a thickening agent, and then carrying out oxidation treatment on the mixed oil dirt to obtain the artificial oil dirt. The preparation method has the advantage of simple process flow.
The artificial oil stain provided by the invention can be widely applied to the test of the oil stain cleaning rate of the cleaning agent for the parts of the automobile equipment.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to one aspect of the invention, the artificial oil stain is mainly prepared by mixing mechanical oil, lubricating grease and a thickening agent and then carrying out oxidation treatment;
the lubricating grease comprises liquid paraffin, barium petroleum sulfonate, stearic acid and industrial vaseline.
The artificial oil stain is mainly prepared by mixing mechanical oil, lubricating grease and a thickening agent and then carrying out oxidation treatment; the prepared artificial oil stain is easy to scale, and the adhesive force of the artificial oil stain can be effectively improved; the mechanical oil can improve the miscibility of the lubricating grease in artificial oil stain; the thickening agent can make the prepared artificial oil stain similar to oil stain carbon deposition, and improve the adhesion. The artificial oil stain prepared by oxidizing the mixed raw materials realizes a synergistic effect, has the characteristics of moderate viscosity and good adhesive force, can well simulate the oil stain generated after the automobile mechanical equipment operates for a period of time, and has good repeatability, so that the repeated cleaning rate of the same cleaning agent can be obtained, and the cleaning rate data that different cleaning agents have gradients can be obtained.
The lubricating grease comprises liquid paraffin, barium petroleum sulfonate, stearic acid and industrial vaseline. In the lubricating grease, the liquid paraffin is a light fraction in petroleum, and has the property of being easily oxidized due to a small number of carbon atoms; barium petroleum sulfonate, industrial vaseline and stearic acid have high viscosity, so that the prepared artificial oil stain is easy to scale, and the adhesive force is improved. Therefore, the lubricating grease prepared by matching the raw materials has the characteristics of easiness in oxidation and high viscosity, and the artificial oil stain prepared by using the lubricating grease can well simulate oil stains generated after automobile mechanical equipment operates for a period of time.
The industrial vaseline refers to white pasty industrial vaseline.
In a preferred embodiment of the present invention, the barium petroleum sulfonate and the industrial petrolatum used herein are barium petroleum sulfonate, industrial petrolatum in the form of paste; stearic acid, as used herein, is particulate stearic acid.
In a preferred embodiment of the present invention, the lubricating grease further comprises a calcium-based grease;
in a preferred embodiment of the present invention, the machine oil comprises at least one of # 46 machine oil, # 68 base oil, and SF 15W/40;
in a preferred embodiment, the machine oil No. 46 and the base oil No. 68 have moderate viscosity and are easy to oxidize, and are widely used in lubricating oil for automobile machinery, and the miscibility of the lubricating grease after being dissolved in artificial oil stain can be improved by the two machine oils.
Preferably, the machine oil comprises 46# machine oil and 68# base oil;
in a preferred embodiment of the present invention, the thickener comprises at least one of alumina, diatomaceous earth and carbon black, preferably carbon black.
Preferably, the carbon black is a100 carbon black powder.
As a preferable embodiment, the A100 carbon black powder is used as a thickening agent, so that the prepared artificial oil stain is more similar to oil stain carbon deposition, the adhesion force can also be improved, and the oxidized oil stain can not be easily separated from a metal test piece after being heated.
In a preferred embodiment of the invention, the artificial oil stain is mainly prepared from the following raw materials in parts by weight: 45-140 parts of mechanical oil, 28-47 parts of lubricating grease and 8-12 parts of thickening agent;
preferably, the artificial oil stain is mainly prepared from the following raw materials in parts by weight: 45-110 parts of mechanical oil, 31-40 parts of lubricating grease and 9-10 parts of thickening agent;
preferably, the artificial oil stain is mainly prepared from the following raw materials in parts by weight: 55 parts of machine oil, 35 parts of lubricating grease and 10 parts of thickening agent.
In a preferred embodiment of the invention, the artificial oil stain is mainly prepared from the following raw materials in parts by weight: 8-12 parts of liquid paraffin, 8-12 parts of barium petroleum sulfonate, 4-6 parts of stearic acid, 8-12 parts of industrial vaseline, 20-70 parts of 46# machine oil, 25-70 parts of 68# base oil, 8-12 parts of thickener and 0-5 parts of calcium-based lubricating grease;
typical but non-limiting preferred embodiments of the above liquid paraffin are: 8 parts, 9 parts, 10 parts, 11 parts and 12 parts; typical but non-limiting preferred embodiments of the above barium petroleum sulfonate are: 8 parts, 9 parts, 10 parts, 11 parts and 12 parts; typical but non-limiting preferred embodiments of the foregoing stearic acid are: 4 parts, 4.5 parts, 5 parts, 5.5 parts and 6 parts; typical but non-limiting preferred embodiments of the above-mentioned industrial petrolatum are: 8 parts, 9 parts, 10 parts, 11 parts and 12 parts; typical but non-limiting preferred embodiments of the above 46# machine oil are: 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 65 parts and 70 parts; typical but non-limiting preferred embodiments of the above 68# base oil are: 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 65 parts and 70 parts; typical but non-limiting preferred embodiments of the above thickeners are: 8 parts, 9 parts, 10 parts, 11 parts and 12 parts; typical but non-limiting preferred embodiments of the above calcium-based greases are: 0 part, 1.5 parts, 2 parts, 2.5 parts, 3.5 parts, 4 parts, 4.5 parts, and 5 parts.
Preferably, the artificial oil stain is mainly prepared from the following raw materials in parts by weight: 9-10 parts of liquid paraffin, 9-10 parts of barium petroleum sulfonate, 4-5 parts of stearic acid, 8-10 parts of industrial vaseline, 20-50 parts of No. 46 mechanical oil, 25-60 parts of No. 68 base oil, 9-10 parts of a thickening agent and 2-5 parts of calcium-based lubricating grease;
preferably, the artificial oil stain is mainly prepared from the following raw materials in parts by weight: 10 parts of liquid paraffin, 10 parts of barium petroleum sulfonate, 5 parts of stearic acid, 8 parts of industrial vaseline, 25 parts of No. 46 machine oil, 30 parts of No. 68 base oil, 10 parts of a thickening agent and 2 parts of calcium-based lubricating grease.
In the invention, the effect of the artificial oil stain is further optimized by further adjusting and optimizing the dosage proportion of the raw materials of each component.
According to one aspect of the invention, the preparation method of the artificial oil stain comprises the following steps:
the method comprises the steps of providing the mixed oil stain containing the machine oil, the lubricating grease and the thickening agent after being heated and dissolved, and then carrying out oxidation treatment on the mixed oil stain to obtain the artificial oil stain.
The preparation method of the artificial oil stain comprises the following steps: providing mixed oil dirt containing mechanical oil, lubricating grease and a thickening agent, and then carrying out oxidation treatment on the mixed oil dirt to obtain the artificial oil dirt. The preparation method has the advantage of simple process flow.
In a preferred embodiment of the invention, the heating and dissolving temperature is 120 ℃, and the temperature of the oxidation treatment is 180-260 ℃;
in a preferred embodiment, the temperature of the oxidation treatment is 180-260 ℃, the viscosity of the oil stain can be directly influenced by the temperature of the oxidation treatment, effective components are evaporated and separated due to too high temperature, the oil stain is scaled, agglomerated and hardened, the oxidation degree is enhanced, the viscosity is too low due to too low temperature, the oil stain is not oxidized enough, and the oil stain is easy to flow and is not beneficial to coating.
Typical but non-limiting preferred embodiments of the temperature of the above oxidation treatment are: 180 deg.C, 190 deg.C, 200 deg.C, 210 deg.C, 220 deg.C, 230 deg.C, 240 deg.C, 250 deg.C and 260 deg.C.
In a preferred embodiment of the present invention, the time of the oxidation treatment is 12 to 48 hours, preferably 24 hours;
in a preferred embodiment, the time of the oxidation treatment is 12 to 48 hours, and the time of the oxidation treatment mainly affects the degree of progress of the oxidation reaction, and if the time is too long, the oil stain becomes persistent, and if the time is too short, the ideal adhesion force cannot be obtained.
Typical but non-limiting preferred embodiments of the time of the above oxidation treatment are: 12h, 16h, 20h, 24h, 26h, 30h, 34h, 36h, 40h, 44h and 48 h.
In a preferred embodiment of the present invention, the oxidation treatment is carried out under the condition of introducing air;
in a preferred embodiment, the oxidation treatment is carried out under the condition of introducing air, and the oxidation reaction needs to be carried out under sufficient oxygen and high temperature conditions, and when the oxygen is too large, the oil stain becomes tough, and when the oxygen is too small, the ideal adhesion force is not obtained.
Preferably, in the oxidation treatment process, the air is introduced in an amount of 0.51-0.6L/min, preferably 0.55L/min.
Typical but non-limiting preferred embodiments of the above-mentioned air input are: 0.51L/min, 0.52L/min, 0.54L/min, 0.56L/min, 0.58L/min, and 0.6L/min.
In the above preferred embodiment, the oxidation treatment step includes: and carrying out oxidation treatment on the mixed oil stain for 12-48 h at 180-260 ℃ under the condition of introducing air, wherein the introducing amount of the air is 0.51-0.6L/min.
In a preferred embodiment of the present invention, the production method further comprises a step of standing aging, which is performed after the oxidation treatment;
as a preferred embodiment, the step of standing and aging can cool the greasy dirt into paste, eliminate the possible air bubbles, make the texture uniform and facilitate the preservation.
In a preferred embodiment of the invention, the standing and aging time is 12-48 h, preferably 24 h.
The above-mentioned time of standing and aging is typically, but not limited to, the following preferred embodiment: 12h, 16h, 20h, 24h, 26h, 30h, 34h, 36h, 40h, 44h and 48 h.
In a preferred embodiment of the present invention, the preparation method comprises the steps of:
(a) and providing mixed oil stain: heating and dissolving mechanical oil, lubricating grease and a thickening agent to obtain mixed oil stain A;
(b) and oxidation treatment: carrying out oxidation treatment on the mixed oil stain obtained in the step (a) for 12-48 h at 180-260 ℃ under the condition of introducing air to obtain mixed oil stain B;
the air is introduced in an amount of 0.51-0.6L/min;
(c) and standing and aging treatment: and (c) standing and aging the mixed oil stain B obtained in the step (B) for 12-48 hours to obtain the artificial oil stain.
Preferably, the method of the oxidation experiment is as follows:
200g of mixed oil stain A is transferred into a 500ml three-mouth flask, then the three-mouth flask is fixed in a 500ml temperature-controllable electrothermal sleeve, a thermometer is inserted into one side pipe orifice, 0.51-0.6L/min air flow is introduced into the other side pipe orifice through a glass pipe, a small air pump, an air flow meter and an air guide pipe, a 90-degree bent-angle glass pipe is connected into a middle pipe orifice to serve as an emptying pipe, and the pipe orifice receives volatilized low-boiling-point grease and moisture in the heating and oxidizing process by using a beaker. And controlling the temperature to be 180-260 ℃, heating for 12-48 h, pouring out the oil stain while the oil stain is hot, standing and aging for 12-48 h to obtain the artificial oil stain, and performing the experiment under a fume hood.
According to one aspect of the invention, the artificial oil stain is applied to the test of the oil stain cleaning rate of the cleaning agent for the parts of the automobile equipment.
The artificial oil stain provided by the invention can be widely applied to the test of the oil stain cleaning rate of the cleaning agent for the parts of the automobile equipment.
The technical solution of the present invention will be further described with reference to examples and comparative examples.
Example 1
The artificial oil stain comprises the following components in parts by weight: 10 parts of liquid paraffin, 10 parts of barium petroleum sulfonate, 5 parts of stearic acid, 8 parts of industrial vaseline, 25 parts of No. 46 mechanical oil, 30 parts of No. 68 base oil, 2 parts of calcium-based lubricating grease and 10 parts of A100 carbon black;
the preparation method comprises the following steps:
(a) and providing mixed oil stain: heating and uniformly mixing the raw materials with the formula amount at 120 ℃ to obtain mixed oil stain A;
(b) and oxidation treatment: 200g of mixed oil stain A is transferred into a 500ml three-neck flask, then the three-neck flask is fixed in a 500ml temperature-controllable electrothermal sleeve, wherein a thermometer is inserted into one side pipe orifice, 0.51L/min air flow is introduced into the other side pipe orifice through a glass pipe, a small air pump, an air flow meter and an air guide pipe, a 90-degree bent-angle glass pipe is connected into a middle pipe orifice to serve as an emptying pipe, and the pipe orifice uses a beaker to receive volatile low-boiling-point grease and moisture discharged in the heating and oxidation process. Controlling the temperature to 240 ℃, heating for 24h, and pouring out the oil stain while the oil stain is hot to obtain mixed oil stain B;
(c) and standing and aging treatment: and (c) standing and aging the mixed oil stain B obtained in the step (B) for 24 hours to obtain the artificial oil stain.
Example 2
This example was the same as example 1 except that 46# machine oil and 68# base oil were each replaced with SF15W/40 engine oil.
Example 3
This example was the same as example 1 except that A100 carbon black was replaced with diatomaceous earth.
Example 4
The artificial oil stain comprises the following components in parts by weight: 8 parts of liquid paraffin, 8 parts of barium petroleum sulfonate, 5 parts of stearic acid, 8 parts of industrial vaseline, 6 parts of lanolin, 5 parts of 10# asphalt, 20 parts of 46# machine oil, 30 parts of 68# base oil and 10 parts of A100 carbon black;
the preparation method is the same as in example 1.
Example 5
The artificial oil stain comprises the following components in parts by weight: 10 parts of liquid paraffin, 5 parts of stearic acid, 10 parts of industrial vaseline, 30 parts of No. 46 mechanical oil, 35 parts of No. 68 base oil and 10 parts of A100 carbon black;
the artificial oil stain of the embodiment does not contain barium petroleum sulfonate.
The preparation method is the same as in example 1.
Example 6
The artificial oil stain comprises the following components in parts by weight: 8 parts of liquid paraffin, 8 parts of barium petroleum sulfonate, 4 parts of stearic acid, 5 parts of industrial vaseline, 28 parts of No. 46 mechanical oil, 39 parts of No. 68 base oil and 8 parts of A100 carbon black;
the preparation method is the same as in example 1.
Example 7
The oxidation treatment in the preparation method of the embodiment comprises the following steps: the same procedure as in example 1 was repeated except that the temperature of the oxidation heating was 180 ℃.
Example 8
The oxidation treatment in the preparation method of the embodiment comprises the following steps: the same procedure as in example 1 was repeated except that the oxidizing heating time was set to 36 hours.
Example 9
This example is the same as example 1 except that it does not include a standing aging step.
Comparative example 1
The artificial oil stain comprises the following components in parts by weight: 45 parts of 68# base oil, 45 parts of 46# mechanical oil and 10 parts of A100 carbon black powder;
the preparation method is the same as example 1.
Comparative example 2
The artificial oil stain comprises the following components in parts by weight: 8 parts of barium petroleum sulfonate, 3.5 parts of lanolin magnesium soap, 2 parts of lanolin, 30 parts of industrial vaseline, 46.5 parts of SF15W/40 engine oil, 2 parts of calcium-based lubricating grease and 8 parts of aluminum oxide.
The preparation method comprises the following steps:
(a) and providing mixed oil stain: heating and uniformly mixing the raw materials according to the formula amount at 120 ℃ to obtain mixed oil stain;
(b) and standing and aging treatment: and (c) standing and aging the mixed oil stain obtained in the step (b) for 24 hours to obtain the artificial oil stain.
Effect example 1
The artificial oil stain prepared by the method has the effects of moderate viscosity and good adhesive force, and can well simulate oil stains generated after automobile mechanical equipment runs for a period of time. Now, the artificial oil stains prepared in the examples 1 to 9 and the comparative examples 1 and 2 are detected.
(1) The detection results of adhesive force, viscosity and the like are as follows: (note: the appearance test method is observation state, coating test piece and then observing coating layer. the viscosity test method is coating 45# steel sheet and vertically hanging, and observing flow state. the adhesion test method is coating 45# steel sheet and vertically hanging, heating at 150 ℃ for 30min, and observing flow state).
(2) And (3) detecting the cleaning rate, wherein the specific detection method comprises the following steps:
1. preparation of a metal test piece: the surface of the test piece was polished to brightness with 240# sandpaper (cloth) in a direction parallel to the long side of the test piece. The polished test piece is wiped by absorbent cotton, hung on an S-shaped hook, immersed in absolute ethyl alcohol and then scrubbed by tweezers clamping the absorbent cotton. Then the test piece is immersed in acetone for rinsing to ensure that the surface is cleaned, dried by hot air and stored in a dryer for later use.
2. Six prepared test pieces are hung by using hooks respectively, and the weight M0 of the hooks and the test pieces is weighed on a balance to be accurate to 0.1 mg. Dipping a small amount of dirt on a glass rod to coat the dirt on a test piece, then repeatedly rolling the glass rod to uniformly coat the dirt on two surfaces of the test piece, and repeatedly leveling two side edges and the bottom edge to form a layer of film on the periphery, controlling the coating amount to be within the range of 0.05-0.10 g, then placing the test piece and a hook in an oven to age for 120min in situ, cooling to room temperature, and weighing the mass M2 of the hook and the test piece to be accurate to 0.1 mg. The three test pieces with the closest weight coated with standard soil were selected for testing.
The processing temperature of the test piece in the oven is 120-180 ℃.
3. Fixing the test piece coated with standard dirt and weighed on a swinging washer by using an original hook, enabling the surface of the test piece to be perpendicular to the swinging direction, respectively immersing the test piece into three swinging washing grooves containing 500ML of cleaning fluid samples at 25 +/-2 ℃, immediately starting timing, statically immersing for 5min, swinging and washing for 5min, taking out the test piece, immediately drying the test piece in a blast drying oven at 120 +/-2 ℃ for 30min, taking out the test piece, cooling the test piece to room temperature, weighing the hook and the mass M1 of the test piece, and accurately measuring the mass M1 to 0.1 mg.
The cleaning solution comprises the following components in percentage by mass: petroleum ether 35% isohexane 40% isopropanol 15% propylene glycol methyl ether 10%.
The washing rate η was calculated according to the formula (I).
η％＝(M2-M1)/(M2-M0)×100.........(I)；
In the formula:
m0-test piece mass, g;
m1-test piece mass after oil stain cleaning, g;
m2-test piece mass after oil stain coating, g.
The specific test results are shown in the following table:
note: the metal test piece is placed at different temperatures for treatment after being coated with oil stains, so that oil stain test pieces with different strengths can be obtained, and the cleaning capability test of cleaning agents with different strengths is met.
According to the cleaning rate detection results, in the examples 1 to 3, the cleaning rates obtained by the treatment temperature tests of different test pieces have obvious gradient differences, so that the cleaning capability of the oil stain cleaning agent can be accurately analyzed. The reason why the cleaning rate of the 3 temperature tests in the embodiment 8 is generally reduced is that the synthetic artificial oil stain is oxidized for a long time, so that oil stains are hardened due to scaling, the strength is too high, the cleaning is difficult, and the cleaning capability of the cleaning agent can not be accurately and really reflected; in example 4, the 10# asphalt and lanolin added to the paint have poor high temperature resistance after coating, which causes the adhesive force to be reduced, so that the paint is easy to clean; barium petroleum sulfonate component of lubricating grease was reduced in example 5; example 6 has increased the mechanical oil content correspondingly, has reduced the thickener content, this all makes the mixed greasy dirt consistency lower, therefore need to increase the oxidation time and can reach similar effects; in example 7, the temperature of the oxidation treatment was 180 ℃ and the degree of low oxidation was insufficient at the temperature, so that the oil stain was not viscous enough and became easy to flow and not easy to adhere to the test piece; example 9 was not left to stand and the coating was rougher when smeared but did not affect the results of the actual tests particularly much, but only the quality of the preservation. The cleaning rates of the examples 4 to 7 and the comparative examples 1 and 2 generally reach about 95%, which indicates that the cleaning agent has strong cleaning power, but actually, when the cleaning agent is used for cleaning automobile equipment, the cleaning rate is poor, which indicates that the synthesized artificial oil stain is too weak and is too easy to clean, and the cleaning power of the cleaning agent cannot be accurately and really reflected. The cleaning rate obtained in the embodiments 1 to 3 is similar to that when the cleaning agent is actually used for cleaning the automobile equipment, and oil stains generated by the automobile equipment can be simulated more truly.
In conclusion, the artificial oil stain provided by the invention is mainly prepared by mixing mechanical oil, lubricating grease and a thickening agent and then carrying out oxidation treatment; wherein the lubricating grease comprises at least one of liquid paraffin, barium petroleum sulfonate, stearic acid and industrial vaseline. The artificial oil stain prepared by oxidizing the mixed raw materials realizes a synergistic effect, has the effects of moderate viscosity and good adhesive force, and can well simulate the oil stain generated after the automobile mechanical equipment operates for a period of time.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. The artificial oil stain is characterized by being prepared from the following raw materials in parts by weight: 8-12 parts of liquid paraffin, 8-12 parts of barium petroleum sulfonate, 4-6 parts of stearic acid, 8-12 parts of industrial vaseline, 20-70 parts of 46# machine oil, 25-70 parts of 68# base oil, 8-12 parts of thickener and 0-5 parts of calcium-based lubricating grease;
the thickener comprises at least one of alumina, diatomaceous earth and carbon black;
the preparation method of the artificial oil stain comprises the following steps:
(a) and providing mixed oil stain: heating and dissolving the raw materials to obtain mixed oil stain A;
(b) and oxidation treatment: carrying out oxidation treatment on the mixed oil stain obtained in the step (a) for 12-48 h at 180-260 ℃ under the condition of introducing air to obtain mixed oil stain B;
the air is introduced in an amount of 0.51-0.6L/min;
(c) and standing and aging treatment: and (c) standing and aging the mixed oil stain B obtained in the step (B) for 12-48 hours to obtain the artificial oil stain.
2. The artificial oil stain according to claim 1, characterized in that the artificial oil stain is prepared from the following raw materials in parts by weight: 9-10 parts of liquid paraffin, 9-10 parts of barium petroleum sulfonate, 4-5 parts of stearic acid, 8-10 parts of industrial vaseline, 20-50 parts of 46# machine oil, 25-60 parts of 68# base oil, 9-10 parts of thickener and 2-5 parts of calcium-based lubricating grease.
3. The artificial oil stain according to claim 1, characterized in that the artificial oil stain is prepared from the following raw materials in parts by weight: 10 parts of liquid paraffin, 10 parts of barium petroleum sulfonate, 5 parts of stearic acid, 8 parts of industrial vaseline, 25 parts of No. 46 machine oil, 30 parts of No. 68 base oil, 10 parts of a thickening agent and 2 parts of calcium-based lubricating grease.
4. The application of the artificial oil stain according to any one of claims 1 to 3 in the test of the oil stain cleaning rate of the cleaning agent for the parts of the automobile equipment.
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| CN103197037B (en) * | 2013-04-28 | 2015-01-28 | 北京绿伞化学股份有限公司 | Artificial dirt, test piece, and preparation method for artificial dirt |
| CN103451666A (en) * | 2013-09-16 | 2013-12-18 | 杨震宇 | Metal cleaning agent |
| CN103725440B (en) * | 2013-12-31 | 2015-10-21 | 中国船舶重工集团公司第七一八研究所 | A kind of Vehicular cleaning agent |
| CN106338574B (en) * | 2015-07-07 | 2019-02-15 | 北京华宇亿康生物工程技术有限公司 | A kind of artificial dirt and test piece of defiling |
| CN106398647B (en) * | 2016-08-27 | 2018-12-04 | 安徽普庆环保科技有限公司 | A kind of artificial greasy dirt and preparation method thereof of simulation metal cleaning |
| CN106987274B (en) * | 2017-05-02 | 2018-08-21 | 上海五伦化工科技有限公司 | De- fragrant paraffin of one kind and preparation method thereof |
| CN108179430B (en) * | 2017-11-28 | 2019-10-22 | 深圳宣顶实业有限公司 | A kind of auto parts cleaning agent and preparation method thereof |
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