CN111254446A - Strong phosphorus-free oil removal powder and preparation method thereof - Google Patents
Strong phosphorus-free oil removal powder and preparation method thereof Download PDFInfo
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Abstract
The invention provides a strong phosphorus-free oil removal powder which comprises, by weight, 2-6 parts of hydroxide, 1-5 parts of carbonate, 6-12 parts of silicate, 5-10 parts of a filler, 1-5 parts of a chelating agent, 5-15 parts of an anionic surfactant and 2-8 parts of a polyether surfactant. The degreasing powder obtained by the invention has excellent cleaning capability and defoaming performance, and the surface of the test piece after degreasing treatment is bright and clean, has no grease and oil residue, has good emulsifying performance, does not float oil, and does not carry oil for the second time; if the oil is removed by ultrasonic after heating, the oil removing effect is better. In addition, the oil removing powder obtained by the invention is economic and environment-friendly, does not contain phosphorus, meets the national environment-friendly standard, and can powerfully remove animal oil, vegetable oil, mineral oil and intractable oil stains; the paint can also be used for removing oil from metal materials such as iron parts, steel materials, partial copper-aluminum parts, alloy parts and the like, has good corrosion resistance and rust resistance on ferrous metals, has a wide application range, and has extremely high practical popularization and application values.
Description
Technical Field
The invention belongs to the technical field of metal material surface cleaning agents, and particularly relates to strong phosphorus-free oil removing powder and a preparation method thereof.
Background
During the production, processing, transportation and use of the metal material, oil stains such as dust, particles, grease and the like can adhere to the surface of the metal material. If the greasy dirt on the metal surface is not removed in time, the subsequent processes such as electroplating and coating are seriously affected, and even the corrosion of the metal material is accelerated, so that the quality and the service life of the metal material are affected.
In the prior art, in order to improve the oil removing effect, the following two improvements are often adopted. One is to increase the amount of alkaline substances in the oil-removing powder, but the increase of alkalinity will inevitably generate certain corrosion effect on the metal, and influence the service performance of the metal; meanwhile, the oil removing agent has large use limitation and has no obvious oil removing effect on refractory oil stains such as mineral oil, alkane substances and the like. Another is to increase the amount of surfactant in the degreasing powder, or to improve the surfactant formulation, but still there are problems: the oil removing capability is limited, the phenomena of oil floating and secondary oil carrying are serious, the foam is excessive, the metal surface after oil removing is not smooth and bright, the oil and fat are remained, and the oil and fat are cleaned for many times or further manually treated. Meanwhile, the oil removing powder in the prior art often contains substances such as phosphate and the like, so that the environmental protection property is poor. Therefore, it is highly desirable to develop a new strong phosphorus-free oil-removing powder.
Disclosure of Invention
In order to solve the problems, the invention provides a strong phosphorus-free oil removal powder, which comprises, by weight, 2-6 parts of hydroxide, 1-5 parts of carbonate, 6-12 parts of silicate, 5-10 parts of a filler, 1-5 parts of a chelating agent, 5-15 parts of an anionic surfactant and 2-8 parts of a polyether surfactant.
As a preferable technical scheme, the anionic surfactant is a succinate surfactant and/or a rosin-based surfactant.
As a preferable technical scheme, the succinate surfactant is selected from one or more of 1, 4-diheptylsulfosuccinate sodium, diisooctyl succinate sodium sulfonate, 1, 4-dihexadecyl sulfosuccinate sodium salt, 1, 4-didecyl sulfosuccinate sodium salt and 1, 4-diisodecyl sulfosuccinate sodium salt.
As a preferable technical scheme, the rosin-based surfactant is sodium abietate and/or disproportionated potassium abietate.
As a preferred technical solution, the weight ratio of the succinate surfactant to the rosin-based surfactant is 1: (0.2-0.7).
As a preferable technical scheme, the polyether surfactant is selected from one or a combination of more of cardanol polyoxyethylene ether, alkylphenol polyoxyethylene ether and fatty acid polyoxyethylene ether.
As a preferable technical scheme, the hydroxyl value of the cardanol polyoxyethylene ether is 65-80 mgKOH/g.
As a preferred technical scheme, the hydroxide is selected from one or more of sodium hydroxide, potassium hydroxide, calcium hydroxide, magnesium hydroxide and ammonium hydroxide.
As a preferable technical scheme, the chelating agent is selected from one or more of sodium gluconate, sodium citrate, monoethanolamine, diethanolamine, triethanolamine, disodium ethylenediamine tetraacetic acid, tetrasodium ethylenediamine tetraacetic acid and sodium ethylenediamine tetramethylene phosphate.
The second aspect of the invention provides a preparation method of the strong phosphorus-free oil removal powder, which comprises the following steps:
the method comprises the following steps: sequentially adding the hydroxide, the carbonate, the silicate, the filler and the chelating agent into a stirring device according to the parts by weight, and uniformly stirring and mixing;
step two: and (3) continuously adding the polyether surfactant and the anionic surfactant, stirring, mixing uniformly and drying to obtain the strong phosphorus-free oil removing powder.
Has the advantages that: the strong phosphorus-free oil removal powder prepared by adopting hydroxide, carbonate, silicate, a filling agent, a chelating agent and a specific anionic surfactant polyether surfactant according to a certain proportion is qualified in an antirust test at 35 +/-2 ℃, the surface of a test piece is free of corrosion points and obvious discoloration through a steel and cast iron corrosion test, the strong phosphorus-free oil removal powder has excellent cleaning capability and good defoaming performance, and meanwhile, the test piece is smooth and bright in surface, free of grease and oil residue, good in emulsifying performance, free of oil floating and free of secondary oil carrying after oil removal treatment. Moreover, the invention has better oil removing effect if the temperature is raised to about 50-60 ℃ and then ultrasonic oil removal is carried out for 3-10 min. In addition, the oil removing powder obtained by the invention is economic and environment-friendly, does not contain phosphorus, meets the national environment-friendly standard, and can powerfully remove animal oil, vegetable oil, mineral oil and intractable oil stains; the paint can also be used for removing oil from metal materials such as iron parts, steel materials, partial copper-aluminum parts, alloy parts and the like, has good corrosion resistance and rust resistance on ferrous metals, has a wide application range, and has extremely high practical popularization and application values.
Detailed Description
The technical features of the technical solutions provided by the present invention are further clearly and completely described below with reference to the specific embodiments, and the scope of protection is not limited thereto.
The words "preferred", "more preferred", and the like, in the present invention refer to embodiments of the invention that may provide certain benefits, under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.
In order to solve the problems, the invention provides a strong phosphorus-free oil removal powder, which comprises, by weight, 2-6 parts of hydroxide, 1-5 parts of carbonate, 6-12 parts of silicate, 5-10 parts of a filler, 1-5 parts of a chelating agent, 5-15 parts of an anionic surfactant and 2-8 parts of a polyether surfactant.
In a preferred embodiment, the strong phosphorus-free oil removal powder comprises 4 parts by weight of hydroxide, 3 parts by weight of carbonate, 9 parts by weight of silicate, 7.5 parts by weight of filler, 3 parts by weight of chelating agent, 10 parts by weight of anionic surfactant and 5 parts by weight of polyether surfactant.
Hydroxide compound
Hydroxides are inorganic compounds formed by metal cations or ammonium ions and hydroxide radicals.
In a preferred embodiment, the hydroxide is selected from one or more of sodium hydroxide, potassium hydroxide, calcium hydroxide, magnesium hydroxide, and ammonium hydroxide.
In a more preferred embodiment, the hydroxide is sodium hydroxide.
Carbonate salt
Carbonate, which is a salt formed from cations of a metal element and carbonate.
In a preferred embodiment, the carbonate is selected from one or more of sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate.
In a more preferred embodiment, the carbonate is sodium carbonate.
Silicates of acid or alkali
Silicate refers to a compound formed by combining silicon, oxygen and other chemical elements.
In a preferred embodiment, the silicate is sodium silicate and/or sodium metasilicate pentahydrate.
In a more preferred embodiment, the silicate is sodium metasilicate pentahydrate (CAS number: 10213-79-3).
Filler
The filler refers to a solid agent added to the system to improve the properties of the material.
The filler is not particularly limited in the present invention, and various fillers known to those skilled in the art, such as sodium sulfate, can be used.
Chelating agents
A chelating agent refers to a substance that contains a ligand structure capable of complexing with a metal atom or ion.
In a preferred embodiment, the chelating agent is selected from one or more of sodium gluconate, sodium citrate, monoethanolamine, diethanolamine, triethanolamine, disodium ethylenediaminetetraacetate, tetrasodium ethylenediaminetetraacetate, and sodium ethylenediaminetermethylenephosphate.
In a more preferred embodiment, the chelating agent is sodium gluconate (CAS number 527-07-1).
Anionic surfactants
Anionic surfactants refer to a class of surfactants that are partially negatively charged and that act as surface active agents upon ionization in water.
In a preferred embodiment, the anionic surfactant is a succinate surfactant and/or a rosin-based surfactant.
In a more preferred embodiment, the succinate surfactant is selected from the group consisting of sodium 1, 4-diheptylsulfosuccinate, sodium diisooctyl succinate sulfonate, sodium 1, 4-dihexadecyl sulfosuccinate, sodium 1, 4-didecyl sulfosuccinate, sodium 1, 4-diisodecyl sulfosuccinate.
In a further preferred embodiment, the succinate surfactant is sodium 1, 4-diheptylsulfosuccinate (CAS number 4680-44-8).
In a more preferred embodiment, the rosin-based surfactant is sodium rosinate and/or potassium disproportionate rosinate.
In a further preferred embodiment, the rosin-based surfactant is sodium abietate (CAS number 14351-66-7).
In a more preferred embodiment, the anionic surfactants are succinate surfactants and rosin-based surfactants.
In a further preferred embodiment, the weight ratio of succinate surfactant to rosin-based surfactant is 1: (0.2-0.7).
In a still further preferred embodiment, the weight ratio of succinate surfactant to rosin-based surfactant is 1: 0.45.
in the prior art, in order to improve the oil removing effect, the following two improvements are often adopted. One is to increase the amount of alkaline substances in the oil-removing powder, but the increase of alkalinity will inevitably generate certain corrosion effect on the metal, and influence the service performance of the metal; meanwhile, the oil removing agent has large use limitation and has no obvious oil removing effect on refractory oil stains such as mineral oil, alkane substances and the like. Another is to increase the amount of surfactant in the degreasing powder, or to improve the surfactant formulation, but still there are problems: the oil removing capability is limited, the oil removing time is long, the phenomena of oil floating and secondary oil carrying are serious, the metal surface after oil removing is not smooth and bright, oil stains of oil can still remain, and the metal surface is required to be cleaned for many times or further manually treated.
The inventor finds that in the process of development, when the anionic surfactant is succinate surfactant and rosin-based surfactant, the weight ratio of the succinate surfactant to the rosin-based surfactant is 1: (0.2-0.7), the oil removal rate of the obtained oil removal powder can be remarkably increased, and oil stains can be quickly stripped from the metal material. The possible reasons are that on one hand, the longer hydrophobic chain structure of the used 1, 4-diheptyl sulfo-sodium succinate is beneficial to the quick contact and the emulsification with the oil stain on the metal material, and the sodium abietate with a certain proportion has the hydrophobic structure with a ring structure, so that the oil stain can be further stripped by a layer-by-layer coating structure of the oil stain; on the other hand, the multi-hydrophobic straight chain structure of the 1, 4-diheptyl sulfonic acid sodium succinate is accumulated in the coating structure, and the intramolecular linking group of the multi-hydrophobic straight chain structure further improves the stability of the coating structure and promotes the oil stain to be stripped from the metal material. However, the inventor finds that after oil removal, oil floating and secondary oil carrying phenomena still exist, and how to improve the oil removal efficiency and avoid the problems is an important problem which the inventor has to solve.
Polyether surfactant
Polyether surfactant refers to a polymer of ethylene oxide and propylene oxide.
In a preferred embodiment, the polyether surfactant is selected from one or more of cardanol polyoxyethylene ether, alkylphenol polyoxyethylene ether and fatty acid polyoxyethylene ether.
In a more preferred embodiment, the polyether surfactant is cardanol polyoxyethylene ether.
The inventor unexpectedly discovers in the further research and development process that when a certain weight part of polyether surfactant cardanol polyoxyethylene ether is introduced into a system, the oil removing effect and the oil removing speed of the obtained oil removing powder are further improved, oil floating and secondary oil carrying phenomena rarely occur after oil removing, and meanwhile, the foam amount is small in the oil removing process. The inventor conjectures that the unsaturated hydrocarbon substituted alkyl chain in a certain weight part of cardanol polyoxyethylene ether can be inserted between molecules of 1, 4-diheptyl sulfonic acid sodium succinate and sodium abietate to promote the formation of a mixed ordered phase in a system; the longer alkyl chain of the oil stain reduces mechanical energy among particles of a coating structure formed after the oil stain is stripped, and the hydrophobic range of a system is increased, so that the oil stain is easier to form micro liquid drops, and the residue of oil stains after oil removal is reduced; in addition, the unsaturated hydrocarbon substituted alkyl chain of cardanol polyoxyethylene ether can also hinder the self-repairing capability of the bubble liquid film to a certain extent, and the defoaming effect is achieved. However, the inventor finds that in the practical use process, when the use temperature of the oil removing process is further properly increased so as to improve the oil removing effect of the effective components in the system, the oil removing efficiency and the oil removing effect of the obtained oil removing powder are not increased or decreased.
In a preferred embodiment, the hydroxyl value of the cardanol polyoxyethylene ether is 65-80 mgKOH/g.
In a more preferred embodiment, the hydroxyl value of the cardanol polyoxyethylene ether is 78 mgKOH/g.
The cardanol polyoxyethylene ether is purchased from Shanghai Banghou Kagaku Co., Ltd, the model of the cardanol polyoxyethylene ether is BGF-7, and the hydroxyl value of the cardanol polyoxyethylene ether is 78 mgKOH/g.
The hydroxyl value in the invention refers to the number of milligrams of potassium hydroxide (KOH) corresponding to the hydroxyl group in 1g of the sample, and is expressed by mgKOH/g; the method for measuring the hydroxyl value is not particularly limited, and various methods for measuring the hydroxyl value known to those skilled in the art, such as a titration analysis of the hydroxyl value, may be used.
The inventor discovers that when the hydroxyl value of the cardanol polyoxyethylene ether is 65-80 mgKOH/g, the oil removing effect of the obtained oil removing powder is further improved at normal temperature and after temperature rise, and the phenomena of oil floating and secondary oil carrying are avoided. The inventors considered that when cardanol polyoxyethylene ether having a certain hydroxyl value was introduced into the system, even if the temperature was increased, the surface area of the coated fine particles was further increased, the surface charge density was decreased, the formation of fine droplets of oily soil was further promoted, and no oily residue remained after degreasing. Meanwhile, hydroxide in a certain weight part in the system can further perform saponification reaction with oil stains, carbonate also has a certain buffering effect and a hard water softening effect, silicate further lubricates, emulsifies and disperses the oil stains to prevent the oil stains from being gathered, and the chelating agent generates a strong chelating effect with metal ions in the hard water, and cooperates with the anionic surfactant and the polyether surfactant to improve the overall oil removing effect.
The second aspect of the invention provides a preparation method of the strong phosphorus-free oil removal powder, which comprises the following steps:
the method comprises the following steps: sequentially adding the hydroxide, the carbonate, the silicate, the filler and the chelating agent into a stirring device according to the parts by weight, and uniformly stirring and mixing;
step two: and (3) continuously adding the polyether surfactant and the anionic surfactant, stirring, mixing uniformly and drying to obtain the strong phosphorus-free oil removing powder.
The present invention will now be described in detail by way of examples, and the starting materials used are commercially available unless otherwise specified.
Examples
Example 1
Example 1 provides a strong phosphorus-free oil removal powder, which comprises, by weight, 4 parts of hydroxide, 3 parts of carbonate, 9 parts of silicate, 7.5 parts of a filler, 3 parts of a chelating agent, 10 parts of an anionic surfactant and 5 parts of a polyether surfactant.
The hydroxide is sodium hydroxide; the carbonate is sodium carbonate; the silicate is sodium metasilicate pentahydrate; the filler is sodium sulfate; the chelating agent is sodium gluconate; the anionic surfactant is 1, 4-diheptyl sulfonic sodium succinate and sodium abietate, and the weight ratio of the 1, 4-diheptyl sulfonic sodium succinate to the sodium abietate is as follows: 0.45 of; the polyether surfactant is cardanol polyoxyethylene ether, and the hydroxyl value is 78 mgKOH/g.
The preparation method of the strong phosphorus-free oil removing powder comprises the following steps:
the method comprises the following steps: sequentially adding the hydroxide, the carbonate, the silicate, the filler and the chelating agent into a stirring device according to the parts by weight, and uniformly stirring and mixing;
step two: and (3) continuously adding the polyether surfactant and the anionic surfactant, stirring, mixing uniformly and drying to obtain the strong phosphorus-free oil removing powder.
Example 2
Embodiment 2 provides a strong phosphorus-free oil removal powder, which comprises, by weight, 2 parts of hydroxide, 1 part of carbonate, 6 parts of silicate, 5 parts of a filler, 1 part of a chelating agent, 5 parts of an anionic surfactant and 2 parts of a polyether surfactant.
The hydroxide is sodium hydroxide; the carbonate is sodium carbonate; the silicate is sodium metasilicate pentahydrate; the filler is sodium sulfate; the chelating agent is sodium gluconate; the anionic surfactant is 1, 4-diheptyl sulfonic sodium succinate and sodium abietate, and the weight ratio of the 1, 4-diheptyl sulfonic sodium succinate to the sodium abietate is as follows: 0.45 of; the polyether surfactant is cardanol polyoxyethylene ether, and the hydroxyl value is 78 mgKOH/g.
The preparation method of the strong phosphorus-free oil removal powder has the same steps as the example 1.
Example 3
Embodiment 3 provides a strong phosphorus-free oil removal powder, which comprises 6 parts by weight of hydroxide, 5 parts by weight of carbonate, 12 parts by weight of silicate, 10 parts by weight of filler, 5 parts by weight of chelating agent, 15 parts by weight of anionic surfactant and 8 parts by weight of polyether surfactant.
The hydroxide is sodium hydroxide; the carbonate is sodium carbonate; the silicate is sodium metasilicate pentahydrate; the filler is sodium sulfate; the chelating agent is sodium gluconate; the anionic surfactant is 1, 4-diheptyl sulfonic sodium succinate and sodium abietate, and the weight ratio of the 1, 4-diheptyl sulfonic sodium succinate to the sodium abietate is as follows: 0.45 of; the polyether surfactant is cardanol polyoxyethylene ether, and the hydroxyl value is 78 mgKOH/g.
The preparation method of the strong phosphorus-free oil removal powder has the same steps as the example 1.
Example 4
Example 1 provides a strong phosphorus-free oil removal powder, which comprises, by weight, 4 parts of hydroxide, 3 parts of carbonate, 9 parts of silicate, 7.5 parts of a filler, 3 parts of a chelating agent, 10 parts of an anionic surfactant and 5 parts of a polyether surfactant.
The hydroxide is sodium hydroxide; the carbonate is sodium carbonate; the silicate is sodium metasilicate pentahydrate; the filler is sodium sulfate; the chelating agent is sodium gluconate; the anionic surfactant is 1, 4-diheptyl sulfonic sodium succinate and sodium abietate, and the weight ratio of the 1, 4-diheptyl sulfonic sodium succinate to the sodium abietate is as follows: 0.2; the polyether surfactant is cardanol polyoxyethylene ether, and the hydroxyl value is 78 mgKOH/g.
The preparation method of the strong phosphorus-free oil removal powder has the same steps as the example 1.
Example 5
Embodiment 5 provides a strong phosphorus-free oil removal powder, which comprises, by weight, 4 parts of hydroxide, 3 parts of carbonate, 9 parts of silicate, 7.5 parts of a filler, 3 parts of a chelating agent, 10 parts of an anionic surfactant, and 5 parts of a polyether surfactant.
The hydroxide is sodium hydroxide; the carbonate is sodium carbonate; the silicate is sodium metasilicate pentahydrate; the filler is sodium sulfate; the chelating agent is sodium gluconate; the anionic surfactant is 1, 4-diheptyl sulfonic sodium succinate and sodium abietate, and the weight ratio of the 1, 4-diheptyl sulfonic sodium succinate to the sodium abietate is as follows: 0.7; the polyether surfactant is cardanol polyoxyethylene ether, and the hydroxyl value is 78 mgKOH/g.
The preparation method of the strong phosphorus-free oil removal powder has the same steps as the example 1.
Example 6
Embodiment 6 provides a strong phosphorus-free oil removal powder, which comprises, by weight, 4 parts of hydroxide, 3 parts of carbonate, 9 parts of silicate, 7.5 parts of a filler, 3 parts of a chelating agent, 10 parts of an anionic surfactant, and 5 parts of a polyether surfactant.
The hydroxide is sodium hydroxide; the carbonate is sodium carbonate; the silicate is sodium metasilicate pentahydrate; the filler is sodium sulfate; the chelating agent is sodium gluconate; the anionic surfactant is 1, 4-diheptyl sulfonic sodium succinate and sodium abietate, and the weight ratio of the 1, 4-diheptyl sulfonic sodium succinate to the sodium abietate is as follows: 0.8; the polyether surfactant is cardanol polyoxyethylene ether, and the hydroxyl value is 78 mgKOH/g.
The preparation method of the strong phosphorus-free oil removal powder has the same steps as the example 1.
Example 7
Embodiment 7 provides a strong phosphorus-free oil removal powder, which comprises, by weight, 4 parts of hydroxide, 3 parts of carbonate, 9 parts of silicate, 7.5 parts of a filler, 3 parts of a chelating agent, 10 parts of an anionic surfactant, and 5 parts of a polyether surfactant.
The hydroxide is sodium hydroxide; the carbonate is sodium carbonate; the silicate is sodium metasilicate pentahydrate; the filler is sodium sulfate; the chelating agent is sodium gluconate; the anionic surfactant is 1, 4-diheptyl sulfonic sodium succinate; the polyether surfactant is cardanol polyoxyethylene ether, and the hydroxyl value is 78 mgKOH/g.
The preparation method of the strong phosphorus-free oil removal powder has the same steps as the example 1.
Example 8
Embodiment 8 provides a strong phosphorus-free oil removal powder, which comprises, by weight, 4 parts of hydroxide, 3 parts of carbonate, 9 parts of silicate, 7.5 parts of a filler, 3 parts of a chelating agent, 10 parts of an anionic surfactant, and 5 parts of a polyether surfactant.
The hydroxide is sodium hydroxide; the carbonate is sodium carbonate; the silicate is sodium metasilicate pentahydrate; the filler is sodium sulfate; the chelating agent is sodium gluconate; the anionic surfactant is sodium abietate; the polyether surfactant is cardanol polyoxyethylene ether, and the hydroxyl value is 78 mgKOH/g.
The preparation method of the strong phosphorus-free oil removal powder has the same steps as the example 1.
Example 9
Embodiment 9 provides a strong phosphorus-free oil removal powder, which comprises, by weight, 4 parts of hydroxide, 3 parts of carbonate, 9 parts of silicate, 7.5 parts of a filler, 3 parts of a chelating agent, 10 parts of an anionic surfactant, and 5 parts of a polyether surfactant.
The hydroxide is sodium hydroxide; the carbonate is sodium carbonate; the silicate is sodium metasilicate pentahydrate; the filler is sodium sulfate; the chelating agent is sodium gluconate. The anionic surfactant is 1-isodecyl 2-sulfonic succinate disodium salt and sodium abietate, and the weight ratio of the 1: 0.45 of; the 1-isodecyl 2-sulfonic succinate disodium salt has a CAS number of 65277-50-1. The polyether surfactant is cardanol polyoxyethylene ether, and the hydroxyl value is 78 mgKOH/g.
The preparation method of the strong phosphorus-free oil removal powder has the same steps as the example 1.
Example 10
Embodiment 10 provides a strong phosphorus-free oil removal powder, which comprises, by weight, 4 parts of hydroxide, 3 parts of carbonate, 9 parts of silicate, 7.5 parts of a filler, 3 parts of a chelating agent, and 10 parts of an anionic surfactant.
The hydroxide is sodium hydroxide; the carbonate is sodium carbonate; the silicate is sodium metasilicate pentahydrate; the filler is sodium sulfate; the chelating agent is sodium gluconate; the anionic surfactant is 1, 4-diheptyl sulfonic sodium succinate and sodium abietate, and the weight ratio of the 1, 4-diheptyl sulfonic sodium succinate to the sodium abietate is as follows: 0.45.
the preparation method of the strong phosphorus-free oil removing powder comprises the following steps:
the method comprises the following steps: sequentially adding the hydroxide, the carbonate, the silicate, the filler and the chelating agent into a stirring device according to the parts by weight, and uniformly stirring and mixing;
step two: and (3) continuously adding the anionic surfactant, stirring and mixing uniformly, and drying to obtain the strong phosphorus-free oil removing powder.
Example 11
Embodiment 11 provides a strong, phosphorus-free degreasing powder comprising, by weight, 4 parts of hydroxide, 3 parts of carbonate, 9 parts of silicate, 7.5 parts of filler, 3 parts of chelating agent, 10 parts of anionic surfactant, and 5 parts of polyether surfactant.
The hydroxide is sodium hydroxide; the carbonate is sodium carbonate; the silicate is sodium metasilicate pentahydrate; the filler is sodium sulfate; the chelating agent is sodium gluconate; the anionic surfactant is 1, 4-diheptyl sulfonic sodium succinate and sodium abietate, and the weight ratio of the 1, 4-diheptyl sulfonic sodium succinate to the sodium abietate is as follows: 0.45 of; the polyether surfactant is fatty alcohol-polyoxyethylene ether AEO-3, and the CAS number is 68131-39-5.
The preparation method of the strong phosphorus-free oil removal powder has the same steps as the example 1.
Example 12
Embodiment 12 provides a strong, phosphorus-free, oil-removing powder comprising, by weight, 4 parts of hydroxide, 3 parts of carbonate, 9 parts of silicate, 7.5 parts of a filler, 3 parts of a chelating agent, 10 parts of an anionic surfactant, and 10 parts of a polyether surfactant.
The hydroxide is sodium hydroxide; the carbonate is sodium carbonate; the silicate is sodium metasilicate pentahydrate; the filler is sodium sulfate; the chelating agent is sodium gluconate; the anionic surfactant is 1, 4-diheptyl sulfonic sodium succinate and sodium abietate, and the weight ratio of the 1, 4-diheptyl sulfonic sodium succinate to the sodium abietate is as follows: 0.45 of; the polyether surfactant is cardanol polyoxyethylene ether, and the hydroxyl value is 78 mgKOH/g.
The preparation method of the strong phosphorus-free oil removal powder has the same steps as the example 1.
Example 13
Embodiment 13 provides a strong, phosphorus-free, oil-removing powder comprising, by weight, 4 parts hydroxide, 3 parts carbonate, 9 parts silicate, 7.5 parts filler, 3 parts chelating agent, 10 parts anionic surfactant, 5 parts polyether surfactant.
The hydroxide is sodium hydroxide; the carbonate is sodium carbonate; the silicate is sodium metasilicate pentahydrate; the filler is sodium sulfate; the chelating agent is sodium gluconate; the anionic surfactant is 1, 4-diheptyl sulfonic sodium succinate and sodium abietate, and the weight ratio of the 1, 4-diheptyl sulfonic sodium succinate to the sodium abietate is as follows: 0.45 of; the hydroxyl value of the cardanol polyoxyethylene ether is 62mgKOH/g, the cardanol polyoxyethylene ether is purchased from Shanghai Bangkang high chemical Co., Ltd, and the cardanol polyoxyethylene ether is BGF-10 in model number.
The preparation method of the strong phosphorus-free oil removal powder has the same steps as the example 1.
Example 14
Example 14 provides a strong, phosphorus-free, oil-removing powder comprising, by weight, 4 parts hydroxide, 3 parts carbonate, 9 parts silicate, 7.5 parts filler, 3 parts chelating agent, 10 parts anionic surfactant, 5 parts polyether surfactant.
The hydroxide is sodium hydroxide; the carbonate is sodium carbonate; the silicate is sodium metasilicate pentahydrate; the filler is sodium sulfate; the chelating agent is sodium gluconate; the anionic surfactant is 1, 4-diheptyl sulfonic sodium succinate and sodium abietate, and the weight ratio of the 1, 4-diheptyl sulfonic sodium succinate to the sodium abietate is as follows: 0.45 of; the hydroxyl value of the cardanol polyoxyethylene ether is 85mgKOH/g, the cardanol polyoxyethylene ether is purchased from Shanghai Bangkang high chemistry Co., Ltd, and the cardanol polyoxyethylene ether is BGF-6 in model number.
The preparation method of the strong phosphorus-free oil removal powder has the same steps as the example 1.
Evaluation of Performance
The strong phosphorus-free oil removal powder obtained in the examples 1 to 14 is added with water to prepare a solution with the mass concentration of 3 to 5 percent for later use.
1. Appearance, pH, rust resistance, corrosion test: the strong phosphorus-free degreasing powder obtained in examples 1 to 5 was tested for appearance, pH (15 to 35 ℃), rust resistance (35. + -.2 ℃), and corrosion resistance to steel and cast iron according to JBT4323.2-1999 test method for Water-based Metal cleaners.
Wherein, the test result is as follows:
appearance: white or yellow, powdery;
pH value (15-35 ℃): 11-13;
antirust property (35 +/-2 ℃): qualified (6 points on the test piece are not rusted);
corrosivity (steel and cast iron): grade 0 (i.e., no corrosion spots on the surface, no significant discoloration).
2. And (3) testing the cleaning capability: the oil washing rate of the strong phosphorus-free oil removal powder obtained in examples 1-14 is calculated according to JBT4323.2-1999 test method for water-based metal cleaner, wherein the temperature of the test solution is 65 +/-2 ℃, and the results are shown in Table 1.
3. And (3) smoothness: evaluating the smoothness of the surface of the metal test piece after the cleaning capability test, wherein the smoothness evaluation standard is that the processed test piece is placed in a bright place, and if the surface of the test piece is bright and clean and has no grease and oil residue, the surface is marked as good; if the surface of the test piece is smooth and clean, and a small amount of grease and oil residue is marked as qualified; if a large amount of grease and oil residue exists on the surface of the test piece, the test piece is marked as unqualified, and the results are shown in Table 1.
4. Defoaming performance test, namely testing the defoaming performance of the strong phosphorus-free oil-removing powder obtained in examples 1-14 at 30 +/-2 ℃ according to JBT4323.2-1999 Water-based metal cleaner test method, and recording the residual foam height, wherein the results are shown in Table 1.
Table 1 results of performance testing
| Examples | Cleaning ability/%) | Evaluation of smoothness | Residual foam height/mL |
| Example 1 | 98.1 | Good effect | 8 |
| Example 2 | 97.9 | Good effect | 8 |
| Example 3 | 98.1 | Good effect | 9 |
| Example 4 | 98.2 | Good effect | 6 |
| Example 5 | 98.1 | Good effect | 11 |
| Example 6 | 86.7 | Qualified | 17 |
| Example 7 | 72.8 | Qualified | 4 |
| Example 8 | 65.8 | Fail to be qualified | 38 |
| Example 9 | 81.3 | Qualified | 14 |
| Example 10 | 32.5 | Fail to be qualified | 41 |
| Example 11 | 40.7 | Fail to be qualified | 36 |
| Example 12 | 58.4 | Qualified | 19 |
| Example 13 | 66.8 | Fail to be qualified | 25 |
| Example 14 | 70.3 | Fail to be qualified | 12 |
The combination of the above experimental results shows that: the strong phosphorus-free oil removing powder is prepared by adopting hydroxides, carbonates, silicates, fillers, chelating agents and a specific anionic surfactant polyether surfactant according to a certain proportion, is white or yellow powder in appearance, has a pH value of 11-13 at 15-35 ℃, is qualified in an antirust test at 35 +/-2 ℃, and has no corrosion points and obvious discoloration on the surface of a test piece in a steel and cast iron corrosion test; the cleaning capacity, namely the oil washing rate, can reach 97.9-98.2%, the defoaming performance, namely the foam height, is only 6-11 mL, the surface of the test piece after oil removal treatment is smooth and bright, no grease and oil residue is left, the emulsifying performance is good, oil does not float, and secondary oil carrying is avoided. Moreover, the invention has better oil removing effect if the temperature is raised to about 50-60 ℃ and then ultrasonic oil removal is carried out for 3-10 min. In addition, the oil removing powder obtained by the invention is economic and environment-friendly, does not contain phosphorus, meets the national environment-friendly standard, and can powerfully remove animal oil, vegetable oil, mineral oil and intractable oil stains; the paint can also be used for removing oil from metal materials such as iron parts, steel materials, partial copper-aluminum parts, alloy parts and the like, has good corrosion resistance and rust resistance on ferrous metals, has a wide application range, and has extremely high practical popularization and application values.
The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. The invention is not limited to the embodiments described above, but rather, many modifications and variations may be made by one skilled in the art without departing from the scope of the invention.
Claims (10)
1. The strong phosphorus-free oil removal powder is characterized by comprising, by weight, 2-6 parts of hydroxide, 1-5 parts of carbonate, 6-12 parts of silicate, 5-10 parts of filler, 1-5 parts of chelating agent, 5-15 parts of anionic surfactant and 2-8 parts of polyether surfactant.
2. The strong phosphorus-free oil-removing powder according to claim 1, wherein the anionic surfactant is a succinate surfactant and/or a rosin-based surfactant.
3. The strong phosphorus-free oil-removing powder of claim 2, wherein the succinate surfactant is selected from one or more of 1, 4-diheptylsulfosuccinate sodium, diisooctyl sulfosuccinate sodium, 1, 4-dihexadecyl sulfosuccinate sodium, 1, 4-didecyl sulfosuccinate sodium, and 1, 4-diisodecyl sulfosuccinate sodium.
4. The strong phosphorus-free degreasing powder as recited in claim 2, wherein the rosin-based surfactant is sodium abietate and/or disproportionated potassium abietate.
5. The strong phosphorus-free oil-removing powder according to any one of claims 2 to 4, wherein the weight ratio of the succinate surfactant to the rosin-based surfactant is 1: (0.2-0.7).
6. The strong phosphorus-free oil-removing powder according to claim 1, wherein the polyether surfactant is selected from one or more of cardanol polyoxyethylene ether, alkylphenol polyoxyethylene ether and fatty acid polyoxyethylene ether.
7. The strong phosphorus-free oil-removing powder according to claim 6, wherein the hydroxyl value of the cardanol polyoxyethylene ether is 65-80 mgKOH/g.
8. The strong phosphorus-free oil-removing powder according to claim 1, wherein the hydroxide is selected from one or more of sodium hydroxide, potassium hydroxide, calcium hydroxide, magnesium hydroxide and ammonium hydroxide.
9. The strong phosphorus-free oil-removing powder according to claim 1, wherein the chelating agent is selected from one or more of sodium gluconate, sodium citrate, monoethanolamine, diethanolamine, triethanolamine, disodium edetate, tetrasodium edetate and sodium edeomethyl phosphate.
10. The preparation method of the strong phosphorus-free oil-removing powder according to any one of claims 1 to 9, which is characterized by comprising the following steps:
the method comprises the following steps: sequentially adding the hydroxide, the carbonate, the silicate, the filler and the chelating agent into a stirring device according to the parts by weight, and uniformly stirring and mixing;
step two: and (3) continuously adding the polyether surfactant and the anionic surfactant, stirring, mixing uniformly and drying to obtain the strong phosphorus-free oil removing powder.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113774371A (en) * | 2021-10-09 | 2021-12-10 | 李莹 | Method for oxidizing and blackening surface of brass workpiece and workpiece prepared by method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113774371A (en) * | 2021-10-09 | 2021-12-10 | 李莹 | Method for oxidizing and blackening surface of brass workpiece and workpiece prepared by method |
| CN113774371B (en) * | 2021-10-09 | 2023-09-05 | 李莹 | Method for blackening brass workpiece surface through oxidation and workpiece prepared by method |
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