CN110804418A - Grinding paste suitable for plant type polishing block and preparation method thereof - Google Patents
Grinding paste suitable for plant type polishing block and preparation method thereof Download PDFInfo
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- CN110804418A CN110804418A CN201910880462.XA CN201910880462A CN110804418A CN 110804418 A CN110804418 A CN 110804418A CN 201910880462 A CN201910880462 A CN 201910880462A CN 110804418 A CN110804418 A CN 110804418A
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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
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1454—Abrasive powders, suspensions and pastes for polishing
- C09K3/1472—Non-aqueous liquid suspensions
Abstract
The invention discloses grinding paste applicable to a plant type polishing block and a preparation method thereof. The grinding paste comprises the following raw materials in percentage by weight: 5-15% of oleic acid, 5-25% of stearic acid, 5-25% of castor oil, 2-5% of wax powder, 2-5% of vulcanized lard, 5-20% of modified nano calcium borate and alpha-Al2O340-60 percent; the preparation method comprises the following steps: fully dissolving stearic acid and wax powder at 80 ℃; adding oleic acid and castor oil into the compound, and fully stirring; slowly adding the modified nano calcium borate into the mixture, and fully stirring; then adding the vulcanized lard; finally adding alpha-Al2O3Fully stirring and cooling to obtain the grinding paste suitable for the corncob polishing and grinding block. The invention has stable property while meeting the grinding effect, and the preparation method of the grinding paste is simple and meets the requirement of industrial mass production.
Description
Technical Field
The invention belongs to the technical field of surface treatment, and particularly relates to grinding paste applicable to a plant type polishing block and a preparation method thereof.
Background
Grinding is widely applied to the metal surface treatment industry as a surface treatment method. The characteristics of the processing medium, namely the polishing block, greatly influence the final effect of processing. At present, most of polishing blocks are sintered grinding blocks and resin grinding blocks, and the sintered grinding blocks have the defects of high cutting capability, high hardness, high energy consumption, environmental pollution and the like. The resin grinding block has strong self-sharpening property and strong buffering effect, and has the defects of low strength and no wear loss. With the enhancement of environmental awareness, plant-type special polishing blocks such as corncobs and walnut shells gradually appear on the market as novel products.
The use technology of the sintering type grinding block and the resin grinding block is mature, and the formula of the grinding liquid matched with the sintering type grinding block and the resin grinding block is also mature. The general main components of the existing grinding fluid are as follows: thickening agent, dispersant, pH regulator, surfactant and chelating agent. However, for plant-type special polishing blocks such as corncobs and walnut shells, grinding paste is not designed according to plant-type characteristics of the polishing blocks, and the adopted grinding liquid or polishing paste is still traditional, so that the addition amount is large, the light emitting speed is low, and the polishing effect is poor. In addition, the existing grinding paste also has the problem of insufficient abrasive dispersibility, which easily causes scratches during grinding and influences the product quality.
Therefore, based on the current situation that the existing plant-type special polishing blocks such as corncobs and walnut shells are used, the invention develops the grinding paste suitable for the plant-type polishing blocks. The grinding paste has stable property, is biodegradable, is green and environment-friendly while meeting the grinding effect, and the preparation method of the grinding paste is simple and meets the requirement of industrial large-scale production.
Disclosure of Invention
The invention aims to provide grinding paste suitable for a corn cob polishing block and a preparation method thereof. The grinding paste has stable property, is biodegradable, is green and environment-friendly while meeting the grinding effect, and the preparation method of the grinding paste is simple and meets the requirement of industrial large-scale production.
In order to achieve the purpose, the invention adopts the following technical scheme:
the grinding paste suitable for the plant type polishing block comprises the following raw materials in percentage by weight:
the vulcanized lard used by the invention improves the extrusion performance of the grinding paste, ensures the grinding performance under high vibration frequency and greatly saves the production time.
The modified nano calcium borate used in the invention has a nano-scale particle size and good wear-resistant and antifriction properties, and can be easily embedded into a corncob polishing block in the grinding process, so that the problems that the plant type polishing block, such as the corncob polishing block, has soft hardness and cannot grind high-hardness materials are solved, the range of grinding samples is expanded, and the wear resistance of the grinding paste is improved. Simultaneously matching alpha-Al with various particle sizes2O3alpha-Al with single grain size can be changed and used2O3In time, the precision multi-profile sample part can not reach the grinding index.
Preferably, the plant-type polishing block is a corn cob polishing block or a walnut shell polishing block.
In the above-mentioned polishing paste, preferably, the oleic acid is an analytically pure oleic acid.
In the above polishing paste, preferably, the stearic acid is analytically pure stearic acid.
In the above-mentioned polishing paste, preferably, the castor oil is analytically pure castor oil.
In the above polishing paste, preferably, the wax powder is a cowax powder Licowax KSL.
In the above polishing paste, preferably, the vulcanized lard has a kinematic viscosity of less than 500mm at 40 ℃2/s。
In the above polishing paste, preferably, the preparation process of the modified nano calcium borate comprises: 100ml of 0.1mol/L Na are sequentially added into a three-mouth bottle provided with a mechanical stirrer and a reflux condensing device2B4O7Mixing of aqueous solution, 30ml of absolute ethanol and 5ml of oleic acidMixing the solution uniformly, and stirring for 1h at 70 ℃; then 50ml of 1mol/LCaCl are slowly added dropwise thereto2An aqueous solution; after the dropwise addition, controlling the pH value of the solution to 6.5 by hydrochloric acid, reacting for 4 hours, floating the obtained white product on the solution, filtering the product at normal pressure, and repeatedly washing the product by using ethanol and deionized water until unreacted reactants, oleic acid and impurities are completely washed away; drying in an oven at 80 deg.C.
Preferably, the alpha-Al is added to the grinding paste2O3Is one or more of 2-3 μm, 0.5-1 μm, and 0.2-0.3 μm.
The invention discovers that when the grinding paste is prepared by using the modified nano calcium borate and alpha-Al used in various particle size grading2O3alpha-Al with a certain particle size can be changed and used2O3In time, the precision multi-profile sample part can not reach the grinding index. Meanwhile, the use of the modified nano calcium borate can improve the characteristic of poor hardness of the plant-type polishing block and improve the wear resistance of the grinding paste.
The invention finds that the water film formed on the surface of the ground product after leaving the water surface can uniformly occupy the whole surface by adopting a water film method for testing. The product is ground by matching with a plant type polishing block, the surface roughness Ra of the ground product can reach 0.2 mu m, and the ground surface can only distinguish the direction of a processing trace.
In the water-based polishing paste, the water-based polishing paste preferably further comprises the following raw materials in percentage by weight:
the invention also provides a preparation method of the grinding paste applicable to the plant type polishing block, which comprises the following steps:
(1) fully melting stearic acid and wax powder at 80 ℃;
(2) adding oleic acid and castor oil into the compound, and fully stirring;
(3) slowly adding the modified nano calcium borate into the mixture prepared in the step (2), and fully stirring;
(4) fully stirring the mixed substances, and then adding the vulcanized lard;
(5) adding alpha-Al2O3Fully stirring and cooling to obtain the grinding paste suitable for the plant type polishing block.
The invention has the following technical characteristics:
1) the invention adopts wax powder to match with oleic acid, stearic acid, castor oil and other oily materials used by the traditional polishing paste, can further improve the antifriction performance of the polishing paste and improve the compatibility of all materials in the polishing paste.
2) The invention adopts the vulcanized lard oil, improves the extrusion performance of the grinding paste, ensures the grinding performance under high vibration frequency and greatly saves the production time.
3) The modified nano calcium borate is adopted, the particle size is nano-scale, the wear resistance and the friction reduction performance are good, and the modified nano calcium borate can be very easily embedded into a corn cob polishing block in the grinding process, so that the problems that the corn cob polishing block is soft in hardness and cannot grind high-hardness materials are solved, and the range of grinding samples is expanded.
4) The invention uses modified nano calcium borate and alpha-Al used in various particle size grading2O3alpha-Al with a certain particle size can be changed and used2O3In time, the precision multi-profile sample part can not reach the grinding index. Meanwhile, the modified nano calcium borate can improve the characteristic of poor hardness of the corncob polishing block and improve the abrasion resistance of the grinding paste.
5) The invention has excellent grinding performance and cleaning performance. And (3) testing by adopting a water film method, and uniformly filling all the surfaces with a water film formed on the surface of the ground product after the ground product leaves the water surface. The product is ground by matching with a plastic grinding material, the surface roughness Ra of the ground product can reach 0.2 mu m, and the ground surface can only distinguish the direction of a processing trace.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
Example 1:
preparing grinding paste, wherein the weight of each raw material is as follows: 5% of oleic acid, 20% of stearic acid, 20% of castor oil, 2% of wax powder, 2% of vulcanized lard, 10% of modified nano calcium borate and alpha-Al2O320％(2-3μm)、ɑ-Al2O321％(0.2-0.3μm)。
The preparation steps are as follows:
(1) fully melting stearic acid and wax powder at 80 ℃;
(2) adding oleic acid and castor oil into the compound, and fully stirring;
(3) slowly adding the modified nano calcium borate into the mixture prepared in the step (2), and fully stirring
(4) Fully stirring the mixed substances, and then adding the vulcanized lard;
(5) adding alpha-Al2O3Fully stirring and cooling to obtain the grinding paste suitable for the corncob polishing and grinding block.
The grinding paste obtained in the embodiment is mixed with a corncob polishing block according to the mass ratio of 1:30, the stainless iron 430 is ground, the surface roughness Ra of the product is 0.2 mu m after grinding, the direction of a processing mark can be identified slightly on the ground surface, and a water film formed on the surface of the ground product after leaving the water surface can uniformly occupy the whole surface.
Example 2:
preparing water-based grinding paste, wherein the weight of each raw material is as follows: 8% of oleic acid, 18% of stearic acid, 18% of castor oil, 2% of wax powder, 2% of vulcanized lard, 13% of modified nano calcium borate and alpha-Al2O323％(0.5-1μm)、ɑ-Al2O316％(0.2-0.3μm)；
The preparation steps are as follows:
(1) fully melting stearic acid and wax powder at 80 ℃;
(2) adding oleic acid and castor oil into the compound, and fully stirring;
(3) slowly adding the modified nano calcium borate into the mixture prepared in the step (2), fully stirring (4), fully stirring the mixture, and then adding the vulcanized lard;
(5) adding alpha-Al2O3Fully stirring and cooling to obtain the grinding paste suitable for the corncob polishing and grinding block.
The grinding paste obtained in the embodiment is mixed with a corncob polishing block according to the mass ratio of 1:20, a titanium alloy Ti-6Al-4V (TC4) is ground, the surface roughness Ra of the product is 0.2 mu m after grinding, the grinding surface can only distinguish the direction of a processing mark slightly, and a water film formed on the surface of the product after the product leaves the water surface can uniformly occupy the whole surface after grinding.
Comparative example 1 (alpha-Al comparison with example 1)2O3Using a single particle size):
preparing water-based grinding paste, wherein the weight of each raw material is as follows: 5% of oleic acid, 20% of stearic acid, 20% of castor oil, 2% of wax powder, 2% of vulcanized lard, 10% of modified nano calcium borate and alpha-Al2O341％(2-3μm)；
The preparation steps are as follows:
(1) fully melting stearic acid and wax powder at 80 ℃;
(2) adding oleic acid and castor oil into the compound, and fully stirring;
(3) slowly adding the modified nano calcium borate into the mixture prepared in the step (2), fully stirring (4), fully stirring the mixture, and then adding the vulcanized lard;
(5) adding alpha-Al2O3Fully stirring and cooling to obtain the grinding paste suitable for the corncob polishing and grinding block.
The grinding paste obtained in the example and a corn cob polishing block are mixed according to the mass ratio of 1:20, the stainless iron 430 is ground, and after grinding, the surface roughness Ra of the product is 3.2 mu m, and processing marks can be seen on the ground surface. The water film formed on the surface of the ground product after leaving the water surface can uniformly occupy the whole surface.
Comparative example 2 (compared to example 1, no sulfurized lard was added):
preparing water-based grinding paste, wherein the weight of each raw material is as follows: 5% of oleic acid, 20% of stearic acid, 20% of castor oil, 2% of wax powder, 10% of modified nano calcium borate and alpha-Al2O341％(2-3μm)；
The preparation steps are as follows:
(1) fully melting stearic acid and wax powder at 80 ℃;
(2) adding oleic acid and castor oil into the compound, and fully stirring;
(3) slowly adding the modified nano calcium borate into the mixture prepared in the step (2), fully stirring (4), and adding alpha-Al2O3Fully stirring and cooling to obtain the grinding paste suitable for the corncob polishing and grinding block.
The grinding paste obtained in the example was mixed with a corn cob polishing block in a mass ratio of 1:20, and stainless iron 430 was ground, and after grinding, it was found that the surface roughness Ra of the product was 0.8 μm, and a processing mark was visible on the ground surface. The water film formed on the surface of the ground product after leaving the water surface can uniformly occupy the whole surface.
Comparative example 3 (less modified nano calcium borate addition compared to example 2):
preparing water-based grinding paste, wherein the weight of each raw material is as follows: 13% of oleic acid, 18% of stearic acid, 18% of castor oil, 2% of wax powder, 2% of vulcanized lard, 8% of modified nano calcium borate and alpha-Al2O323％(0.5-1μm)、ɑ-Al2O316％(0.2-0.3μm)；
The preparation steps are as follows:
(1) fully melting stearic acid and wax powder at 80 ℃;
(2) adding oleic acid and castor oil into the compound, and fully stirring;
(3) slowly adding the modified nano calcium borate into the mixture prepared in the step (2), fully stirring (4), fully stirring the mixture, and then adding the vulcanized lard;
(5) adding alpha-Al2O3Fully stirring and cooling to obtain the grinding paste suitable for the corncob polishing and grinding block.
The grinding paste obtained in this example was mixed with a corn cob polishing block at a mass ratio of 1:20, and a titanium alloy Ti-6Al-4V (TC4) was polished to find that the surface roughness Ra of the product was 6.3 μm and that the polished surface showed machining marks. The water film formed on the surface of the ground product after leaving the water surface can uniformly occupy the whole surface.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The grinding paste is characterized by comprising the following raw materials in percentage by weight:
2. the applicable grinding paste of the vegetable type polishing block according to claim 1, wherein the vegetable type polishing block is a corn cob polishing block or a walnut shell polishing block.
3. The vegetable type polishing pad suitable for use as claimed in claim 1, wherein said oleic acid is analytically pure oleic acid.
4. The vegetal polishing pad suitable for use according to claim 1, wherein said stearic acid is analytically pure stearic acid.
5. The conformable polishing paste of claim 1 wherein said castor oil is an analytically pure castor oil.
6. The vegetable type polishing pad suitable for use according to claim 1, wherein said wax powder is a cowax powder Licowax KSL.
7. The vegetable type polishing pad suitable for the polishing block as claimed in claim 1, wherein the vulcanized lard has a kinematic viscosity of less than 500mm at 40 ℃2/s。
8. The grinding paste suitable for the plant type polishing block according to claim 1, wherein the preparation process of the modified nano calcium borate comprises the following steps: 100ml of 0.1mol/L Na are sequentially added into a three-mouth bottle provided with a mechanical stirrer and a reflux condensing device2B4O7Uniformly mixing the aqueous solution, 30ml of absolute ethyl alcohol and 5ml of oleic acid, and stirring at 70 ℃ for 1 h; then, 50ml of 1mol/L CaCl is slowly added dropwise into the mixture2An aqueous solution; after the dropwise addition, controlling the pH value of the solution to 6.5 by hydrochloric acid, reacting for 4 hours, floating the obtained white product on the solution, filtering the product at normal pressure, and repeatedly washing the product by using ethanol and deionized water until unreacted reactants, oleic acid and impurities are completely washed away; drying in an oven at 80 deg.C.
9. The grinding paste suitable for the vegetable type polishing block according to claim 1, wherein the alpha-Al is2O3Is one or more of 2-3 μm, 0.5-1 μm, and 0.2-0.3 μm.
10. A method of making a grinding paste suitable for use in a vegetable-type polishing pad as claimed in any one of claims 1 to 9, comprising the steps of:
(1) fully melting stearic acid and wax powder at 80 ℃;
(2) adding oleic acid and castor oil into the compound, and fully stirring;
(3) slowly adding the modified nano calcium borate into the mixture prepared in the step (2), and fully stirring;
(4) fully stirring the mixed substances, and then adding the vulcanized lard;
(5) adding alpha-Al2O3Fully stirring and cooling to obtain the grinding paste suitable for the plant type polishing block.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111534234A (en) * | 2020-05-11 | 2020-08-14 | 广东长盈精密技术有限公司 | Middle polishing additive, middle polishing composition and polishing method |
| CN111534233A (en) * | 2020-05-11 | 2020-08-14 | 广东长盈精密技术有限公司 | Rough polishing additive, rough polishing composition and polishing method |
| CN111592829A (en) * | 2020-05-11 | 2020-08-28 | 广东长盈精密技术有限公司 | Fine polishing additive, fine polishing composition and polishing method |
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