CN105440953A - Aqueous diamond grinding fluid with continuously suspending abrasives and preparation method thereof - Google Patents
Aqueous diamond grinding fluid with continuously suspending abrasives and preparation method thereof Download PDFInfo
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- CN105440953A CN105440953A CN201510744226.7A CN201510744226A CN105440953A CN 105440953 A CN105440953 A CN 105440953A CN 201510744226 A CN201510744226 A CN 201510744226A CN 105440953 A CN105440953 A CN 105440953A
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Abstract
The present invention discloses an aqueous diamond grinding fluid with continuously suspending abrasives and a preparation method thereof, and belongs to the technical field of precision and ultra precision grinding processing. The grinding fluid comprises the following components in parts by weight: 0.1-5 parts of diamond abrasives, 0.01-2 parts of alkylphenol polyoxyethylene ether, 1-5 parts of modified polyurea N-methylpyrrolidone, 1-5 parts of N-methylpyrrolidone, 30-60 parts of an organic solvent, and 23-67.89 parts of water. According to the preparation method disclosed by the present invention, by using a surface modifying method, the diamond abrasives are modified by the alkylphenol polyoxyethylene ether, the modified diamond abrasives can be stably adsorbed on a molecular chain of the modified polyurea N-methylpyrrolidone; the bonding force between two is enhanced; meanwhile, by using the spatial network structure of a modified polyurea N-methylpyrrolidone molecule, the diamond abrasives are prevented from settling and aggregating to realize continuous suspending of the diamond abrasives, so that uniformly mixing operation before using the grinding fluid is saved, and the convenience in use is improved.
Description
Technical field
The present invention relates to a kind of water diamond lapping liquid of abrasive material sustained suspension, and the preparation method of this lapping liquid, belong to accurate, ultraprecision grinding processing technique field.
Background technology
In water diamond lapping liquid, diamond abrasive is due to the acting in conjunction of self gravitation, Van der Waals force, and sedimentation that can be very fast in the short period of time is gathered in container bottom.Lapping liquid before the use, needs to shake up process more usually, and heavy poly-diamond abrasive redispersion bottom container bottle is opened, and technique is loaded down with trivial details, wastes time and energy, and this treating processes greatly reduces the ease of use of lapping liquid.
The patent of invention of publication number CN101186804A discloses a kind of water diamond lapping liquid, primarily of diadust, suspension agent, dispersion stabilizer, organic solvent and water composition, wherein suspension agent is saponified polyvinyl base alcohol, organic clay, precipitated silica, gas-phase silica, HYDROXY PROPYL METHYLCELLULOSE.Adopt this technical scheme, when diadust granularity is at 0.01 ~ 3 μm, abrasive material can keep even stable suspension state for a long time, there will not be any precipitation clustering phenomena; When diamond grit is greater than 3 μm, then stable suspersion can not be kept.
Summary of the invention
The object of this invention is to provide a kind of water diamond lapping liquid of abrasive material sustained suspension.
Meanwhile, the present invention also provides a kind of preparation method of above-mentioned water diamond lapping liquid.
In order to realize above object, the technical solution adopted in the present invention is:
A kind of water diamond lapping liquid of abrasive material sustained suspension, be made up of the component of following mass fraction: diamond abrasive 0.1 ~ 5 part, alkylphenol polyoxyethylene (surface-modifying agent) 0.01 ~ 2 part, the N-Methyl pyrrolidone (suspension agent) 1 ~ 5 part of modified polyurea, N-Methyl pyrrolidone (solubility promoter) 1 ~ 5 part, organic solvent (lubricating auxiliary agent) 30 ~ 60 parts, 23 ~ 67.89 parts, water (thinner).
The granularity of described diamond abrasive is M0/0.25 ~ M50/70 (0 ~ 70 μm), and purity is 99.5%.
Described alkylphenol polyoxyethylene is polyoxyethylene nonylphenol ether, polyoxyethylene octylphenol ether or dodecyl phenol polyethenoxy ether, is more than analytical pure, and the length of polyoxyethylene chain can not have a negative impact to abrasive surface modification.Alkylphenol polyoxyethylene, by the physical adsorption of active function groups on diamond abrasive surface on its molecular chain, changes the physico-chemical property on diamond abrasive grains surface, finally reaches the object to diamond abrasive surface modification.
The N-Methyl pyrrolidone of described modified polyurea is commercial goods, and purchased from Guangzhou Yi Tong macromolecular material company limited, purity is 95%.The N-Methyl pyrrolidone of modified polyurea and N-Methyl pyrrolidone are joining after in lapping liquid, can form tridimensional network instantaneously, make lapping liquid produce thixotropic fluidity, prevent diamond abrasive sedimentation in standing process from assembling, realize its sustained suspension.
The preferred ethylene glycol of described organic solvent or polyoxyethylene glycol, be analytical pure.The oilness acting as raising lapping liquid of organic solvent.
The preferred deionized water of described water, its TDS value is less than 0.03mg/L.Deionized water can reduce lapping liquid viscosity, improves it in the mobility of grinding card.
A kind of preparation method of water diamond lapping liquid of abrasive material sustained suspension, comprise the following steps: accurately get each component according to mass fraction, alkylphenol polyoxyethylene is added in diamond abrasive and mixes, add organic solvent and water mixing again, finally add N-Methyl pyrrolidone and the N-Methyl pyrrolidone mixing of modified polyurea, to obtain final product.
The preferred ultrasonic disperse of mode of described mixing, or ultrasonic disperse combines with stirring.The processing parameter of ultrasonic disperse is preferably: power 500 ~ 1500W, frequency 40KHz, 10 ~ 30 minutes time.
Beneficial effect of the present invention:
The present invention adopts alkylphenol polyoxyethylene modification diamond abrasive, and modified diamond abrasive sorptive power is stablized on the molecular chain of the N-Methyl pyrrolidone being adsorbed on modified polyurea, enhances the bonding force between the two.Utilize the spacial framework of the N-Methyl pyrrolidone molecule of modified polyurea simultaneously, hinder diamond abrasive grains sedimentation to assemble, realize its stable suspersion, the final ease of use improving lapping liquid.In addition, the present invention also can avoid the hidden danger that may produce manufacturing deficiency because of abrasive material deposition caking.
In the present invention, the preparation technology of water diamond lapping liquid is simple, easy to operate, is suitable for large-scale industrial and produces and application.
Accompanying drawing explanation
Fig. 1 is the suspension property contrast that in test example, embodiment 1 and comparative example prepare diamond abrasive in lapping liquid.
Embodiment
Following embodiment is only described in further detail the present invention, but does not form any limitation of the invention.
Embodiment 1
The water diamond lapping liquid of abrasive material sustained suspension in the present embodiment, be made up of the component of following mass fraction: diamond abrasive (granularity M0/0.5, purity 99.5%) 0.1 part, polyoxyethylene nonylphenol ether (surface-modifying agent, NP-6 and NP-9 respectively gets 0.005 part, analytical pure) 0.01 part, N-Methyl pyrrolidone (the suspension agent of modified polyurea, purity 95%) 1 part, N-Methyl pyrrolidone (analytical pure) 1 part, ethylene glycol (analytical pure) 30 parts, deionized water (TDS value is less than 0.03mg/L) 67.89 parts.
The preparation method of the water diamond lapping liquid of abrasive material sustained suspension, comprises the following steps: accurately get each component according to mass fraction, is added by polyoxyethylene nonylphenol ether in diamond abrasive, stirs and ultrasonic disperse 10min, ultrasonic power 500W, frequency 40KHz; Add ethylene glycol and deionized water again, stir and ultrasonic disperse (power, frequency are the same) 20min; Finally add N-Methyl pyrrolidone and the N-Methyl pyrrolidone of modified polyurea, stir and ultrasonic disperse (power, frequency are the same) 15min, to obtain final product.
Embodiment 2
The water diamond lapping liquid of abrasive material sustained suspension in the present embodiment, be made up of the component of following mass fraction: diamond abrasive (granularity M5/10, purity 99.5%) 0.5 part, polyoxyethylene octylphenol ether (surface-modifying agent, OP-6 and OP-9 respectively gets 0.25 part, analytical pure) 0.5 part, N-Methyl pyrrolidone (the suspension agent of modified polyurea, purity 95%) 2 parts, N-Methyl pyrrolidone (analytical pure) 2 parts, polyoxyethylene glycol (analytical pure) 40 parts, deionized water (TDS value is less than 0.03mg/L) 55 parts.
The preparation method of the water diamond lapping liquid of abrasive material sustained suspension, comprises the following steps: accurately get each component according to mass fraction, is added by polyoxyethylene octylphenol ether in diamond abrasive, stirs and ultrasonic disperse 15min, ultrasonic power 600W, frequency 40KHz; Add polyoxyethylene glycol and deionized water again, stir and ultrasonic disperse (power, frequency are the same) 20min; Finally add N-Methyl pyrrolidone and the N-Methyl pyrrolidone of modified polyurea, stir and ultrasonic disperse (power, frequency are the same) 20min, to obtain final product.
Embodiment 3
The water diamond lapping liquid of abrasive material sustained suspension in the present embodiment, be made up of the component of following mass fraction: diamond abrasive (granularity M20/30, purity 99.5%) 2 parts, polyoxyethylene nonylphenol ether (surface-modifying agent, NP-6 and NP-15 respectively gets 0.5 part, analytical pure) 1 part, N-Methyl pyrrolidone (the suspension agent of modified polyurea, purity 95%) 3 parts, N-Methyl pyrrolidone (analytical pure) 3 parts, polyoxyethylene glycol (analytical pure) 50 parts, deionized water (TDS value is less than 0.03mg/L) 41 parts.
The preparation method of the water diamond lapping liquid of abrasive material sustained suspension, comprises the following steps: accurately get each component according to mass fraction, is added by polyoxyethylene nonylphenol ether in diamond abrasive, stirs and ultrasonic disperse 10min, ultrasonic power 800W, frequency 40KHz; Add polyoxyethylene glycol and deionized water again, stir and ultrasonic disperse (power, frequency are the same) 20min; Finally add N-Methyl pyrrolidone and the N-Methyl pyrrolidone of modified polyurea, stir and ultrasonic disperse (power, frequency are the same) 15min, to obtain final product.
Embodiment 4
The water diamond lapping liquid of abrasive material sustained suspension in the present embodiment, be made up of the component of following mass fraction: diamond abrasive (granularity M25/35, purity 99.5%) 3 parts, dodecyl phenol polyethenoxy ether (surface-modifying agent, analytical pure) 2 parts, N-Methyl pyrrolidone (the suspension agent of modified polyurea, purity 95%) 4 parts, N-Methyl pyrrolidone (analytical pure) 4 parts, ethylene glycol (analytical pure) 50 parts, deionized water (TDS value is less than 0.03mg/L) 37 parts.
The preparation method of the water diamond lapping liquid of abrasive material sustained suspension, comprise the following steps: accurately get each component according to mass fraction, dodecyl phenol polyethenoxy ether is added in diamond abrasive, stir and ultrasonic disperse 15min, ultrasonic power 800W, frequency 40KHz; Add ethylene glycol and deionized water again, stir and ultrasonic disperse (power, frequency are the same) 25min; Finally add N-Methyl pyrrolidone and the N-Methyl pyrrolidone of modified polyurea, stir and ultrasonic disperse (power, frequency are the same) 20min, to obtain final product.
Embodiment 5
The water diamond lapping liquid of abrasive material sustained suspension in the present embodiment, be made up of the component of following mass fraction: diamond abrasive (granularity M40/60, purity 99.5%) 5 parts, polyoxyethylene nonylphenol ether (surface-modifying agent, OP-4 and OP-10 respectively gets 1 part, analytical pure) 2 parts, N-Methyl pyrrolidone (the suspension agent of modified polyurea, purity 95%) 5 parts, N-Methyl pyrrolidone (analytical pure) 5 parts, polyoxyethylene glycol (analytical pure) 60 parts, deionized water (TDS value is less than 0.03mg/L) 23 parts.
The preparation method of the water diamond lapping liquid of abrasive material sustained suspension, comprise the following steps: accurately get each component according to mass fraction, polyoxyethylene nonylphenol ether is added in diamond abrasive, stir and ultrasonic disperse 15min, ultrasonic power 1200W, frequency 40KHz; Add polyoxyethylene glycol and deionized water again, stir and ultrasonic disperse (power, frequency are the same) 30min; Finally add N-Methyl pyrrolidone and the N-Methyl pyrrolidone of modified polyurea, stir and ultrasonic disperse (power, frequency are the same) 20min, to obtain final product.
Embodiment 6
The water diamond lapping liquid of abrasive material sustained suspension in the present embodiment, be made up of the component of following mass fraction: diamond abrasive (granularity M50/70, purity 99.5%) 5 parts, dodecyl phenol polyethenoxy ether (surface-modifying agent, analytical pure) 2 parts, N-Methyl pyrrolidone (the suspension agent of modified polyurea, purity 95%) 5 parts, N-Methyl pyrrolidone (analytical pure) 5 parts, polyoxyethylene glycol (analytical pure) 60 parts, deionized water (TDS value is less than 0.03mg/L) 23 parts.
The preparation method of the water diamond lapping liquid of abrasive material sustained suspension, comprise the following steps: accurately get each component according to mass fraction, dodecyl phenol polyethenoxy ether is added in diamond abrasive, stir and ultrasonic disperse 15min, ultrasonic power 1500W, frequency 40KHz; Add polyoxyethylene glycol and deionized water again, stir and ultrasonic disperse (power, frequency are the same) 30min; Finally add N-Methyl pyrrolidone and the N-Methyl pyrrolidone of modified polyurea, stir and ultrasonic disperse (power, frequency are the same) 20min, to obtain final product.
Comparative example
Diamond grinding fluid, be made up of the component of following mass fraction: diamond abrasive (granularity M0/0.5, purity 99.5%) 0.1 part, polyoxyethylene octylphenol ether (surface-modifying agent, OP-7, OP-10 respectively get 0.005 part, analytical pure) 0.01 part, Xylo-Mucine (suspension agent, analytical pure) 1 part, 98.89 parts, water (TDS value is less than 0.03mg/L).
The preparation method of diamond grinding fluid, comprises the following steps: accurately get each component according to mass fraction, OP-7, OP-10 is added in diamond abrasive, stirs and ultrasonic disperse 10min, ultrasonic power 500W, frequency 40KHz; Add water again, stir and ultrasonic disperse (power, frequency are the same) 20min; Finally add Xylo-Mucine, stir and ultrasonic disperse (power, frequency are the same) 15min, to obtain final product.
Test example
Diamond grinding fluid prepared by Example 1 and comparative example, natural sedimentation (leaving standstill) is adopted to observe the suspension of diamond abrasive in above-mentioned two kinds of lapping liquids, test-results see the following form 1 and Fig. 1 (Fig. 1 is the mode of appearance of natural subsidence lapping liquid after 6 months, in figure, A represents lapping liquid prepared by embodiment 1, and B represents lapping liquid prepared by comparative example).
The suspension of diamond abrasive in table 1 lapping liquid
Claims (6)
1. the water diamond lapping liquid of an abrasive material sustained suspension, it is characterized in that: be made up of the component of following mass fraction: diamond abrasive 0.1 ~ 5 part, alkylphenol polyoxyethylene 0.01 ~ 2 part, the N-Methyl pyrrolidone of modified polyurea 1 ~ 5 part, N-Methyl pyrrolidone 1 ~ 5 part, organic solvent 30 ~ 60 parts, 23 ~ 67.89 parts, water.
2. water diamond lapping liquid according to claim 1, is characterized in that: the granularity of described diamond abrasive is M0/0.25 ~ M50/70.
3. water diamond lapping liquid according to claim 1, is characterized in that: described alkylphenol polyoxyethylene is polyoxyethylene nonylphenol ether, polyoxyethylene octylphenol ether or dodecyl phenol polyethenoxy ether.
4. water diamond lapping liquid according to claim 1, is characterized in that: described organic solvent is ethylene glycol or polyoxyethylene glycol.
5. the preparation method of water diamond lapping liquid according to any one of Claims 1 to 4, it is characterized in that: comprise the following steps: accurately get each component according to mass fraction, alkylphenol polyoxyethylene is added in diamond abrasive and mixes, add organic solvent and water mixing again, finally add N-Methyl pyrrolidone and the N-Methyl pyrrolidone mixing of modified polyurea, to obtain final product.
6. preparation method according to claim 5, is characterized in that: the mode of described mixing is ultrasonic disperse, or ultrasonic disperse combines with stirring; The processing parameter of ultrasonic disperse is preferably: power 500 ~ 1500W, frequency 40KHz, 10 ~ 30 minutes time.
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Cited By (10)
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| CN106479371A (en) * | 2016-08-15 | 2017-03-08 | 惠州市米特仑科技有限公司 | A kind of high precision composite polishing liquid and preparation method thereof |
| CN107553341A (en) * | 2016-06-30 | 2018-01-09 | 北京远东恒嘉新材料有限公司 | The Efficient utilization method of abrasive |
| CN110577824A (en) * | 2019-08-01 | 2019-12-17 | 安庆帝伯格茨活塞环有限公司 | Water-based grinding agent and preparation method thereof |
| CN110591565A (en) * | 2019-10-08 | 2019-12-20 | 河南联合精密材料股份有限公司 | Alumina polishing solution for sapphire polishing and preparation method thereof |
| CN111995983A (en) * | 2020-09-02 | 2020-11-27 | 中科孚迪科技发展有限公司 | Preparation method of grinding fluid for processing semiconductor wafer |
| CN112029416A (en) * | 2020-09-02 | 2020-12-04 | 中科孚迪科技发展有限公司 | Grinding fluid for processing semiconductor wafer |
| CN112251146A (en) * | 2020-10-20 | 2021-01-22 | 德阳展源新材料科技有限公司 | Preparation method of diamond polishing solution |
| CN113881346A (en) * | 2020-07-02 | 2022-01-04 | 苏州诺天美新材料技术有限公司 | Diamond grinding fluid and preparation process thereof |
| CN113913154A (en) * | 2021-04-27 | 2022-01-11 | 北京利研科技有限公司 | Efficient suspension auxiliary agent and preparation and application thereof |
| CN114686171A (en) * | 2022-05-19 | 2022-07-01 | 中国振华集团云科电子有限公司 | Suspensible diamond grinding fluid and preparation process thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107553341A (en) * | 2016-06-30 | 2018-01-09 | 北京远东恒嘉新材料有限公司 | The Efficient utilization method of abrasive |
| CN106479371A (en) * | 2016-08-15 | 2017-03-08 | 惠州市米特仑科技有限公司 | A kind of high precision composite polishing liquid and preparation method thereof |
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| CN110591565A (en) * | 2019-10-08 | 2019-12-20 | 河南联合精密材料股份有限公司 | Alumina polishing solution for sapphire polishing and preparation method thereof |
| CN113881346A (en) * | 2020-07-02 | 2022-01-04 | 苏州诺天美新材料技术有限公司 | Diamond grinding fluid and preparation process thereof |
| CN112029416A (en) * | 2020-09-02 | 2020-12-04 | 中科孚迪科技发展有限公司 | Grinding fluid for processing semiconductor wafer |
| CN111995983A (en) * | 2020-09-02 | 2020-11-27 | 中科孚迪科技发展有限公司 | Preparation method of grinding fluid for processing semiconductor wafer |
| CN112029416B (en) * | 2020-09-02 | 2022-06-03 | 中科孚迪科技发展有限公司 | Grinding fluid for processing semiconductor wafer |
| CN112251146A (en) * | 2020-10-20 | 2021-01-22 | 德阳展源新材料科技有限公司 | Preparation method of diamond polishing solution |
| CN112251146B (en) * | 2020-10-20 | 2021-08-24 | 德阳展源新材料科技有限公司 | Preparation method of diamond polishing solution |
| CN113913154A (en) * | 2021-04-27 | 2022-01-11 | 北京利研科技有限公司 | Efficient suspension auxiliary agent and preparation and application thereof |
| CN114686171A (en) * | 2022-05-19 | 2022-07-01 | 中国振华集团云科电子有限公司 | Suspensible diamond grinding fluid and preparation process thereof |
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