CN110591420A - Metal plate conveying release agent and preparation method thereof - Google Patents
Metal plate conveying release agent and preparation method thereof Download PDFInfo
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- CN110591420A CN110591420A CN201910733544.1A CN201910733544A CN110591420A CN 110591420 A CN110591420 A CN 110591420A CN 201910733544 A CN201910733544 A CN 201910733544A CN 110591420 A CN110591420 A CN 110591420A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
Abstract
The invention discloses a metal plate conveying release agent and a preparation method thereof, and the technical scheme is that the metal plate conveying release agent comprises the following components: graphite, a dispersing agent, a suspending agent, an anti-wear agent, an alkaline regulator, a preservative and water; the dispersant comprises sodium polyacrylate, sodium carboxymethyl cellulose, and gum; the suspending agent comprises microcrystalline cellulose and activated carbon; the wear-resisting agent is carbon black. The dispersibility and high-temperature stability of the graphite can be improved through the dispersant and the suspending agent; through the matching of the carbon black and the gum, the isolating film formed on the surface of the copper plate has good wear resistance and is not easy to fall off, the adhesion of the copper plate and the conveyor belt can be prevented, and the condition that pull marks are generated between the copper plate and the conveyor belt is reduced; moreover, the raw materials are safe and low in toxicity, and belong to an environment-friendly separant.
Description
Technical Field
The invention relates to the technical field of separants, in particular to a metal plate conveying separant and a preparation method thereof.
Background
In the process of processing a metal plate (such as a copper plate), a high-temperature-resistant conveyor belt is required to transport the high-temperature metal plate, because the temperature of the copper plate is very high, but because the temperatures of the copper plate and the conveyor belt are both higher in the transport process, the adhesion phenomenon is easily generated between the metal plate and the conveyor belt, so that the copper plate cannot automatically fall off from the conveyor belt, and the transport effect is influenced; therefore, a layer of release agent with a lubricating effect needs to be coated on the lower surface of the copper plate, so that the copper plate and the conveyor belt can be separated more easily.
To meet the production requirements, the release agent must meet the following requirements: firstly, the separant has good high temperature resistance and separation effect, secondly, when the copper plate is separated from the conveyor belt, the copper plate cannot generate pull marks with the conveyor belt, and when the separant is used, the volatilization of harmful gas is reduced as much as possible; however, the conventional release agents cannot satisfy the above conditions at the same time, and therefore, it is required to develop a new release agent.
Disclosure of Invention
The invention aims to provide a metal plate conveying release agent, which has excellent release effect by using graphite with excellent high-temperature resistance and lubricating property as a base material of the release agent; the dispersibility and high-temperature stability of the graphite can be improved through the dispersing agent and the suspending agent; through the matching of the carbon black and the gum, the isolating film formed on the surface of the copper plate has good wear resistance and is not easy to fall off, the adhesion of the copper plate and the conveyor belt can be prevented, and the condition that pull marks are generated between the copper plate and the conveyor belt is reduced; moreover, the raw materials are safe and low in toxicity, and belong to an environment-friendly separant.
The technical purpose of the invention is realized by the following technical scheme:
the metal sheet conveying release agent comprises the following components in parts by weight: 280 parts of graphite, 36-47.5 parts of dispersing agent, 135 parts of suspending agent, 40-50 parts of wear-resistant agent, 20-25 parts of alkaline regulator, 4-5 parts of preservative and 1800 parts of water 1780; the dispersing agent comprises sodium polyacrylate, sodium carboxymethyl cellulose and gum in a weight ratio of 2 (6-7) to 10; the suspending agent comprises microcrystalline cellulose and activated carbon in a weight ratio of 1 (4-4.4); the wear-resisting agent is carbon black.
By adopting the technical scheme, the graphite with excellent high-temperature resistance and lubricating property is used as the separant, so that the separant has excellent separation effect; the dispersibility and high-temperature stability of the graphite can be improved through the dispersing agent and the suspending agent; through the matching of the carbon black and the gum, a lubricating film formed on the surface of the copper plate has good wear resistance and is not easy to fall off, and the condition that pull marks are generated between the copper plate and a conveyor belt can be reduced; moreover, the raw materials are safe and low in toxicity, and belong to an environment-friendly separant.
Further, the gum is one of gum arabic and karaya gum.
By adopting the technical scheme, the gum is an exudate of trees or shrubs, has certain viscosity, reduces the fluidity of graphite in water so as to improve the dispersibility and the adhesiveness of the graphite, so that the separant coated on the copper plate can quickly form a film and is not easy to fall off, and the lubricating and isolating effect is improved; the gum arabic and the karaya gum also have good film-forming property, and when the gum arabic and the karaya gum are matched with the wear resistance, a lubricating film formed by the gum arabic and the karaya gum can play a role in protecting the copper plate, reduce the wear between the copper plate and a conveyor belt and improve the smoothness of the surface of the copper plate; in addition, the gum belongs to natural materials and environment-friendly raw materials.
Further, the alkaline regulator is ammonia water.
By adopting the technical scheme, the ammonia water can adjust the pH value of the system to make the system in alkalescence, and under the pH value, the dispersibility of graphite particles in water can be improved, and the stability of the separant is improved.
Further, the nitrogen content of the aqueous ammonia is 20 wt%.
By adopting the technical scheme, the ammonia content of the ammonia water is 20wt%, and the dispersion effect on the graphite is optimal.
Further, the preservative is an isothiazolinone preservative.
By adopting the technical scheme, the gum in the raw materials is a natural organic component and is easy to decay after being placed for a long time, so that the preservative is required to be added to improve the storage life of the separant; the isothiazolinone preservative has the advantages of strong antibacterial ability, small using dosage, good compatibility with a system, low toxicity and biodegradability, can effectively inhibit microorganisms such as mould in the separant, and improves the storage life of the separant.
Further, the isothiazolinone preservative is one or a compound of 1, 2-benzisothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one.
By adopting the technical scheme, the 1, 2-benzisothiazolin-3-one, the 5-chloro-2-methyl-4-isothiazolin-3-one and the 2-methyl-4-isothiazolin-3-one belong to isothiazolinone preservatives, have excellent bactericidal and preservative effects, have good compatibility with raw materials in a separant, and belong to environment-friendly raw materials.
Further, the carbon black is high abrasion furnace black.
By adopting the technical scheme, the high wear-resistant furnace black has good dispersibility and wear resistance, and can be uniformly dispersed in water of the isolating agent by matching with the dispersing agent, so that the wear resistance of the isolating agent is improved, the wear between the copper plate and the conveyor belt is reduced, and the lubricating and isolating effects of the isolating agent are improved.
Further, the graphite is one of crystalline flake graphite, earthy graphite and artificial graphite.
By adopting the technical scheme, the crystalline flake graphite is natural crystalline graphite which is similar to fish phosphorus in shape, belongs to a hexagonal system, is in a layered structure and has good performances of high temperature resistance, electric conduction, heat conduction, lubrication, plasticity, acid and alkali resistance and the like; the earthy graphite is also called microcrystalline graphite and has good high temperature resistance and lubricating property; the artificial graphite is a graphite material obtained by organic carbonization and graphitization high-temperature treatment, and has good corrosion resistance and lubricity.
Further, the carbon content of the flake graphite is 94-99 wt%.
By adopting the scheme, the flake graphite with the carbon content of 94-99wt% belongs to high-carbon graphite, and has good high-temperature resistance and isolation effect.
The invention also aims to provide a preparation method of the metal plate conveying release agent.
The technical purpose of the invention is realized by the following technical scheme:
a preparation method of a metal plate conveying release agent comprises the following steps in parts by weight: adding 20-25 parts of microcrystalline cellulose, 12-17.5 parts of sodium carboxymethylcellulose, 20-25 parts of gum, 4-5 parts of sodium polyacrylate, 280 parts of graphite 270-.
By adopting the technical scheme, after the temperature is raised to 80-90 ℃, the dispersibility of the gum can be improved, the dispersibility and the suspensibility of the raw materials in water can be improved, and the stability of the separant can be improved.
In summary, compared with the prior art, the invention has the following beneficial effects:
1. the graphite with excellent high-temperature resistance and lubricating property is used as a base material of the separant, so that the separant has excellent separation effect; the dispersibility and high-temperature stability of the graphite can be improved through the dispersing agent and the suspending agent; through the matching of the carbon black and the gum, the isolating film formed on the surface of the copper plate has good wear resistance and is not easy to fall off, the adhesion of the copper plate and the conveyor belt can be prevented, and the condition that pull marks are generated between the copper plate and the conveyor belt is reduced; moreover, the raw materials are safe and low in toxicity, and belong to an environment-friendly separant;
2. the gum is an exudate of trees or shrubs, has certain viscosity, can improve the dispersibility and the adhesiveness of graphite, can quickly form a film when being coated on a copper plate, is not easy to fall off, and improves the isolation effect; the gum arabic and the karaya gum also have good film-forming property, and when the gum arabic and the karaya gum are matched with the wear resistance, a lubricating film formed by the gum arabic and the karaya gum can play a role in protecting the copper plate, reduce the wear between the copper plate and a conveyor belt and improve the smoothness of the surface of the copper plate; in addition, the gum belongs to natural materials and environment-friendly raw materials;
3. the ammonia water can adjust the pH value of the system to make the system in alkalescence, and under the pH value, the dispersibility of graphite particles in water can be improved, and the stability of the separant is improved;
4. as the gum in the raw materials is a natural organic component and is easy to decay after being placed for a long time, a preservative is required to be added to improve the storage life of the separant; the isothiazolinone preservative has the advantages of strong antibacterial ability, small using dosage, good compatibility with a system, low toxicity and biodegradability, can effectively inhibit microorganisms such as mould in the separant, and improves the storage life of the separant.
Detailed Description
The present invention will be described in further detail below.
First, an embodiment
The microcrystalline cellulose in the following examples is selected from food grade microcrystalline cellulose produced by Tianli pharmaceutic adjuvant Game company of Qufuji city; the acacia gum is food grade acacia gum produced by Shandong Jurong bioengineering GmbH; the karaya gum is selected from food-grade karaya gum produced by Antha Tang bioengineering GmbH; the sodium carboxymethylcellulose is selected from sodium carboxymethylcellulose (product number 01) produced by Ralshi chemical Co., Ltd, Ningpo; the sodium polyacrylate is selected from sodium polyacrylate liquid with model number GY-303 produced by Runyang chemical Co., Ltd of Changzhou city; the graphite is selected from flake graphite with the model number of 99S-0 produced by Qingdao Jiuyi graphite Limited company; the carbon black is N330 wet carbon black produced by Shandongteng Sheng fine chemical industry Co., Ltd; the activated carbon is selected from wood chip activated carbon with the granularity of 200 meshes produced by Shandong Nanke activated carbon Co.Ltd; the antiseptic is selected from BIT antiseptic of Promex Na20TS, produced by Shandong Yousol chemical technology Co., Ltd; the ammonia water is 20wt% produced by the chemical engineering limited company in Liaoyang city.
Example 1: the metal plate conveying release agent is prepared by the following method: the method comprises the following steps: adding 20kg of microcrystalline cellulose, 12kg of sodium carboxymethylcellulose, 20kg of Arabic gum, 4kg of sodium polyacrylate, 270kg of flake graphite, 40kg of high-wear-resistant furnace black, 80kg of activated carbon, 4kg of 1, 2-benzisothiazolin-3-one and 20kg of ammonia water into 1800 parts of 1780-1800 parts of water, heating to 80-90 ℃, and stirring at the temperature at the speed of 800r/min for 30-50min to obtain the metal plate conveying separant.
Examples 2 to 6
The preparation process described in example 1 was followed, except that the raw materials, the amounts and the process parameters were as shown in Table 1.
TABLE 1
Second, comparative example
Comparative example 1: this comparative example differs from example 1 in that no sodium polyacrylate was added to the starting material.
Comparative example 2: this comparative example differs from example 1 in that no gum arabic was added to the starting materials.
Comparative example 3: this comparative example differs from example 1 in that no suspending agent was added to the starting material.
Comparative example 4: this comparative example differs from example 1 in that no microcrystalline cellulose was added to the starting material.
Comparative example 5: this comparative example differs from example 1 in that no activated carbon was added to the starting material.
Comparative example 6: this comparative example is different from example 1 in that ammonia water was not added to the raw materials.
Comparative example 7: this comparative example differs from example 1 in that no 1, 2-benzisothiazolin-3-one was added to the starting material.
Third, performance test
Respectively coating the release agents prepared in examples 1-6 and comparative examples 1-7 on the lower surface of the heated copper plate, transporting the copper plate through a conveyor belt, and observing the separation effect of the copper plate and the conveyor belt; the prepared release agent was hermetically left standing at room temperature for 3 months, 6 months, 9 months and 12 months, and whether or not the release agent was delaminated and precipitated was observed, and the test results are shown in table 2.
TABLE 2
As can be seen from the data in Table 2, the release agent prepared by the invention (examples 1-6) has excellent separation effect and good high temperature resistance; the conveyed copper plate and the conveyor belt can keep a smooth, flat and tension mark-free state; under the action of the suspending agent, the dispersing agent and the bactericide, the separant can still keep the state of no demixing, no precipitation and stable quality under the long-term (one year) storage.
In comparative example 1, sodium polyacrylate was not added, and compared to example 1, the surface of the copper plate and the surface of the conveyor belt became rough and scratches were generated, and the copper plate was partially adhered when separated from the conveyor belt, indicating that sodium polyacrylate can improve the isolation effect of the isolation agent.
In comparative example 2, no gum arabic was added, and compared to example 1, the surface of the copper plate and the surface of the conveyor belt became rough and severe scratches occurred, the copper plate would adhere when separated from the conveyor belt, the conveyor belt had slag of the release agent, and the release agent partially fell off during the transportation of the copper plate, indicating that gum arabic can improve the adhesion between the release agent and the copper plate, and during the transportation, gum arabic makes the release agent not easily fall off the copper plate, thus improving the release effect of the release agent and reducing the wear between the copper plate and the conveyor belt; after standing for 6 months, the separant generates the phenomena of layering and precipitation, which shows that the Arabic gum can improve the quality stability of the separant through the dispersibility of the graphite in water and the suspending agent.
In comparative example 3, the surface of the copper plate and the surface of the conveyor belt became rough and severe scratches were generated, the copper plate was adhered when separated from the conveyor belt, and delamination and sedimentation were generated after standing for 6 months, compared to example 1, without adding the suspending agent; the suspending agent can improve the dispersibility and suspensibility of the graphite in water and keep the graphite in a uniform and stable state.
In comparative example 4, microcrystalline cellulose was not added, and compared to example 1, the surface of the copper plate and the surface of the conveyor belt became rough, and scratches occurred, and the copper plate was adhered when separated from the conveyor belt; the separant generates layering and precipitation after standing for 9 months, which shows that the microcrystalline cellulose can improve the dispersibility and suspensibility of the graphite in water and keep the graphite in a uniform and stable state.
In comparative example 5, activated carbon was not added, and compared to example 1, the surface of the copper plate and the surface of the conveyor belt became rough, and scratches were generated, and the copper plate was adhered when being separated from the conveyor belt; the separant generates layering and precipitation after standing for 9 months, which shows that the activated carbon can improve the dispersibility and suspensibility of the graphite in water and keep the graphite in a uniform and stable state.
In comparative example 6, ammonia was not added, and compared to example 1, the surface of the copper plate and the surface of the conveyor belt became rough, and scratches occurred, and the copper plate was adhered when separated from the conveyor belt; the separant generates layering and precipitation after standing for 9 months, which shows that the ammonia water can improve the dispersibility of the graphite in water and keep the graphite in a uniform and stable state.
In comparative example 7, the antimicrobial 1, 2-benzisothiazolin-3-one is not added, and compared with example 1, the release agent can be layered and precipitated after standing for 3 months, which shows that the release agent without the 1, 2-benzisothiazolin-3-one is easy to breed microorganisms such as mold and the like, influences the dispersion effect of organic matters in the release agent, reduces the dispersion effect of the release agent on graphite, influences the stability of the release agent and reduces the storage life of the release agent.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
1. The metal plate conveying release agent is characterized in that: the paint comprises the following components in parts by weight: 280 parts of graphite, 36-47.5 parts of dispersing agent, 135 parts of suspending agent, 40-50 parts of wear-resistant agent, 20-25 parts of alkaline regulator, 4-5 parts of preservative and 1800 parts of water 1780;
the dispersing agent comprises sodium polyacrylate, sodium carboxymethyl cellulose and gum in a weight ratio of 2 (6-7) to 10;
the suspending agent comprises microcrystalline cellulose and activated carbon in a weight ratio of 1 (4-4.4);
the wear-resisting agent is carbon black.
2. The metal sheet conveying release agent of claim 1, wherein: the gum is one of acacia gum and karaya gum.
3. The metal sheet conveying release agent of claim 1, wherein: the alkaline regulator is ammonia water.
4. The metal sheet conveying release agent of claim 3, wherein: the nitrogen content of the ammonia water is 20 wt%.
5. The metal sheet conveying release agent of claim 1, wherein: the preservative is an isothiazolinone preservative.
6. The metal sheet conveying release agent of claim 5, wherein: the isothiazolinone preservative is one or the compound of 1, 2-benzisothiazolin-3-one, 5-chlorine-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one.
7. The metal sheet conveying release agent of claim 1, wherein: the carbon black is high wear-resistant furnace black.
8. The metal sheet conveying release agent of claim 1, wherein: the graphite is one of crystalline flake graphite, earthy graphite and artificial graphite.
9. The metal sheet transfer release agent of claim 8, wherein: the carbon content of the flake graphite is 94-99 wt%.
10. A preparation method of a metal plate conveying release agent is characterized by comprising the following steps: the method comprises the following steps: adding 20-25 parts of microcrystalline cellulose, 12-17.5 parts of sodium carboxymethylcellulose, 20-25 parts of gum, 4-5 parts of sodium polyacrylate, 280 parts of graphite 270-.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090305052A1 (en) * | 2005-09-13 | 2009-12-10 | Graphit Kropfmuhl Ag | Stable Aqueous Graphite Dispersion With High Solids Content |
| CN104403771A (en) * | 2014-09-29 | 2015-03-11 | 广东东莞市天润电子材料有限公司 | Heat resistant lubricant used for drawing refractory metal and preparation method thereof |
| CN107723067A (en) * | 2017-10-26 | 2018-02-23 | 湖南金化科技集团有限公司 | A kind of water-based low temperature resistant graphitic lubricant and its preparation method and application |
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- 2019-08-09 CN CN201910733544.1A patent/CN110591420B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090305052A1 (en) * | 2005-09-13 | 2009-12-10 | Graphit Kropfmuhl Ag | Stable Aqueous Graphite Dispersion With High Solids Content |
| CN104403771A (en) * | 2014-09-29 | 2015-03-11 | 广东东莞市天润电子材料有限公司 | Heat resistant lubricant used for drawing refractory metal and preparation method thereof |
| CN107723067A (en) * | 2017-10-26 | 2018-02-23 | 湖南金化科技集团有限公司 | A kind of water-based low temperature resistant graphitic lubricant and its preparation method and application |
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