CN114062222A - Preparation method of ceramic filter plate detection liquid and detection method of ceramic filter plate - Google Patents
Preparation method of ceramic filter plate detection liquid and detection method of ceramic filter plate Download PDFInfo
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- CN114062222A CN114062222A CN202111341604.9A CN202111341604A CN114062222A CN 114062222 A CN114062222 A CN 114062222A CN 202111341604 A CN202111341604 A CN 202111341604A CN 114062222 A CN114062222 A CN 114062222A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 101
- 238000001514 detection method Methods 0.000 title claims abstract description 64
- 239000007788 liquid Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 57
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 57
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims abstract description 42
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 38
- 238000003756 stirring Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- XJWSAJYUBXQQDR-UHFFFAOYSA-M dodecyltrimethylammonium bromide Chemical compound [Br-].CCCCCCCCCCCC[N+](C)(C)C XJWSAJYUBXQQDR-UHFFFAOYSA-M 0.000 claims abstract description 20
- ATVJXMYDOSMEPO-UHFFFAOYSA-N 3-prop-2-enoxyprop-1-ene Chemical compound C=CCOCC=C ATVJXMYDOSMEPO-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 19
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 19
- -1 polyoxyethylene Polymers 0.000 claims abstract description 19
- 235000010265 sodium sulphite Nutrition 0.000 claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- 238000007689 inspection Methods 0.000 claims abstract description 9
- 230000007547 defect Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 9
- 230000001680 brushing effect Effects 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000003860 storage Methods 0.000 description 5
- 239000002736 nonionic surfactant Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000003093 cationic surfactant Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000000693 micelle Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000003223 protective agent Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000002563 ionic surfactant Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000009044 synergistic interaction Effects 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Filtering Materials (AREA)
Abstract
The invention relates to a preparation method of a detection liquid for a ceramic filter plate, which comprises the following steps of preparing pure water, hydroquinone, sodium sulfite, ethylene glycol ether, glycerol polyoxyethylene allyl ether and dodecyl trimethyl ammonium bromide according to certain parts by weight, uniformly stirring according to a predetermined sequence, and storing in a closed shading container; the invention also relates to a detection method of the ceramic filter plate, wherein the detection liquid is brushed on the surface of the filter plate and is placed under the lamp inspection platform for internal structure detection. The detection liquid for the ceramic filter plate can display the structure inside the ceramic filter plate, reflects whether the inside of the filter plate has defects or not, and reflects whether the inside of the filter plate is thoroughly cleaned after the filter plate is cleaned by using a cleaning liquid after being used for a period of time.
Description
Technical Field
The invention relates to a preparation method of a detection liquid for a ceramic filter plate and a detection method of the ceramic filter plate, belonging to the technical field of ceramics.
Background
The ceramic vacuum filter is used for separating solid and liquid in ore pulp, the filtering part of the existing ceramic vacuum filter is generally composed of 12 fan-shaped ceramic filtering plates, water in the ore pulp is collected through micropores among the filtering media by utilizing the internal and external pressure difference of the filtering media, and fine particles are adsorbed on the outer surface of the filtering media to form a filter cake so as to realize solid-liquid separation. The high-efficiency energy-saving advantage of the ceramic vacuum filter mainly depends on the water-permeable and air-impermeable characteristics of the ceramic filter plate, so that the ceramic filter plate is the core of the ceramic filter equipment.
As a filter medium, micropores of a ceramic filter plate of the ceramic filter are easy to block in the using process, and a plurality of factors causing the blocking of the ceramic filter plate are provided, wherein one of the main factors is that fine particles contained in ore pulp enter filter channels of a ceramic membrane along with the filtering process, so that the filtering capacity of the ceramic filter plate is greatly reduced. In order to prevent the filtering capacity of the ceramic filter plate from being weakened, the ceramic filter plate is periodically subjected to chemical cleaning and ultrasonic cleaning, so that the ceramic filter plate is recovered to a higher filtering level, but if the ceramic filter plate is not thoroughly cleaned, a small part of substances are remained, and the ceramic filter plate is thoroughly blocked and scrapped along with the accumulation of residual substances.
At present, the prior art has no process for detecting the interior of the ceramic filter plate, and only the production and the cleaning are carried out by experience.
Disclosure of Invention
The invention provides a preparation method of a detection liquid for a ceramic filter plate and a detection method of the ceramic filter plate, which can visually display the internal structure of the ceramic filter plate and reflect whether the internal structure of the ceramic filter plate has defects or not.
In order to achieve the purpose, the invention provides the following technical scheme: the preparation method of the detection liquid for the ceramic filter plate comprises the following steps:
the first step is as follows: preparing raw materials, taking 50-70 parts of pure water, 2-8 parts of hydroquinone, 10-20 parts of sodium sulfite, 20-30 parts of ethylene glycol ether, 5-10 parts of glycerol polyoxyethylene allyl ether and 1-5 parts of dodecyl trimethyl ammonium bromide for later use;
the second step is that: and (2) stirring, namely adding half of the weighed pure water into a stirrer, sequentially adding the ethylene glycol ether, the glycerol polyoxyethylene allyl ether and the dodecyl trimethyl ammonium bromide in the stirring process, after uniformly stirring and no layering, sequentially adding hydroquinone and sodium sulfite, after uniformly stirring and no layering, continuously adding the rest amount of pure water, and uniformly stirring to obtain the ceramic filter plate detection liquid.
And (3) placing the ceramic filter plate detection liquid prepared by the two steps into a closed lightproof container for preservation.
Preferably, in the first step, raw materials are prepared, and 50 parts by weight of pure water, 4 parts by weight of hydroquinone, 10 parts by weight of sodium sulfite, 25 parts by weight of ethylene glycol ether, 8 parts by weight of glycerol polyoxyethylene allyl ether and 3 parts by weight of dodecyl trimethyl ammonium bromide are taken for standby.
The invention also provides a detection method of the ceramic filter plate, which uses the detection liquid of the ceramic filter plate and comprises the following steps:
the first step is as follows: cleaning the surface of the ceramic filter plate;
the second step is that: placing the ceramic filter plate on a lamp inspection table, and brushing the surface of the ceramic filter plate with the detection liquid of the ceramic filter plate by a brush point dipping method or a water gun spraying method;
the third step: and observing whether the internal structure of the ceramic filter plate has defects or not under the strong light of the lamp inspection table.
The detection liquid for the ceramic filter plate can display the internal structure of the ceramic filter plate, reflects whether the micropore arrangement in the filter plate is reasonable or not, and reflects whether the internal water channel is thoroughly cleaned after the filter plate is cleaned by using a cleaning liquid after being used for a period of time.
Detailed Description
Other advantages and features of the present invention will become readily apparent to those skilled in the art from the following detailed description, wherein it is to be understood that the invention is not limited to the specific embodiments disclosed, but is to be construed as limited only by the appended claims. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The components of the detection liquid for the ceramic filter plate provided by the invention comprise hydroquinone as a developing agent, sodium sulfite as a protective agent, ethylene glycol ether as an organic solvent, glycerol polyoxyethylene allyl ether as a nonionic surfactant and dodecyl trimethyl ammonium bromide as a cationic surfactant. The hydroquinone is used as a developer, the hydroquinone is brown under the action of strong light, the internal structure of the ceramic filter plate can be effectively displayed, the sodium sulfite is used as a protective agent, the hydroquinone can be prevented from being oxidized, and the organic solvent ethylene glycol ether is added, so that the permeability of the detection liquid can be ensured and the detection liquid can quickly permeate into the ceramic material; the nonionic surfactant glycerol polyoxyethylene allyl ether has high surface activity, low surface tension of an aqueous solution, low critical micelle concentration, large micelle aggregation number, strong solubilization, and good emulsifying power and detergency; the cationic surfactant dodecyl trimethyl ammonium bromide is used as a wetting agent, and the nitrogen atom in the molecule of the cationic surfactant dodecyl trimethyl ammonium bromide contains lone pair electrons, so that the nitrogen atom can be combined with hydrogen in acid molecules through hydrogen bonds, amino groups are positively charged, and the detection solution has good surface activity in an acid medium. Through the mixing and compounding of the surfactants, the stability and the permeation effect of the detection liquid can be better, various surfactants have better compatibility, and by utilizing the good synergistic effect among the surfactants, the ionic surfactant and the nonionic surfactant can form a mixed micelle in the solution to generate the synergistic interaction effect, so that the surface activity is improved, the dosage of the surfactants is reduced, and the chemical stability is better when more cations and nonionic surfactants are compounded.
Example one
A preparation method of a ceramic filter plate detection liquid comprises the following steps:
the first step is as follows: preparing raw materials, namely taking 60 parts of pure water, 4 parts of hydroquinone, 10 parts of sodium sulfite, 20 parts of ethylene glycol ether, 5 parts of glycerol polyoxyethylene allyl ether and 1 part of dodecyl trimethyl ammonium bromide for later use according to parts by weight;
the second step is that: stirring, namely adding half of the weighed pure water into a stirrer, sequentially adding the ethylene glycol ether, the glycerol polyoxyethylene allyl ether and the dodecyl trimethyl ammonium bromide in the stirring process, after uniformly stirring and no layering, sequentially adding hydroquinone and sodium sulfite, after uniformly stirring and no layering, continuously adding the rest pure water, and uniformly stirring to obtain a detection liquid of the ceramic filter plate;
the third step: and (4) placing the detection liquid of the ceramic filter plate prepared in the second step into a closed lightproof container for storage.
Example two
A preparation method of a ceramic filter plate detection liquid comprises the following steps:
the first step is as follows: preparing raw materials, taking 70 parts of pure water, 2 parts of hydroquinone, 15 parts of sodium sulfite, 25 parts of ethylene glycol ether, 8 parts of glycerol polyoxyethylene allyl ether and 2 parts of dodecyl trimethyl ammonium bromide for later use;
the second step is that: stirring, namely adding half of the weighed pure water into a stirrer, sequentially adding the ethylene glycol ether, the glycerol polyoxyethylene allyl ether and the dodecyl trimethyl ammonium bromide in the stirring process, after uniformly stirring and no layering, sequentially adding hydroquinone and sodium sulfite, after uniformly stirring and no layering, continuously adding the rest pure water, and uniformly stirring to obtain a detection liquid of the ceramic filter plate;
the third step: and (4) placing the detection liquid of the ceramic filter plate prepared in the second step into a closed lightproof container for storage.
EXAMPLE III
A preparation method of a ceramic filter plate detection liquid comprises the following steps:
the first step is as follows: preparing raw materials, taking 70 parts of pure water, 3 parts of hydroquinone, 18 parts of sodium sulfite, 30 parts of ethylene glycol ether, 6 parts of glycerol polyoxyethylene allyl ether and 3 parts of dodecyl trimethyl ammonium bromide for later use;
the second step is that: stirring, namely adding half of the weighed pure water into a stirrer, sequentially adding the ethylene glycol ether, the glycerol polyoxyethylene allyl ether and the dodecyl trimethyl ammonium bromide in the stirring process, after uniformly stirring and no layering, sequentially adding hydroquinone and sodium sulfite, after uniformly stirring and no layering, continuously adding the rest pure water, and uniformly stirring to obtain a detection liquid of the ceramic filter plate;
the third step: and (4) placing the detection liquid of the ceramic filter plate prepared in the second step into a closed lightproof container for storage.
Example four
A preparation method of a ceramic filter plate detection liquid comprises the following steps:
the first step is as follows: preparing raw materials, namely taking 60 parts of pure water, 4 parts of hydroquinone, 15 parts of sodium sulfite, 24 parts of ethylene glycol ether, 5 parts of glycerol polyoxyethylene allyl ether and 4 parts of dodecyl trimethyl ammonium bromide for later use according to parts by weight;
the second step is that: stirring, namely adding half of the weighed pure water into a stirrer, sequentially adding the ethylene glycol ether, the glycerol polyoxyethylene allyl ether and the dodecyl trimethyl ammonium bromide in the stirring process, after uniformly stirring and no layering, sequentially adding hydroquinone and sodium sulfite, after uniformly stirring and no layering, continuously adding the rest pure water, and uniformly stirring to obtain a detection liquid of the ceramic filter plate;
the third step: and (4) placing the detection liquid of the ceramic filter plate prepared in the second step into a closed lightproof container for storage.
EXAMPLE five
A preparation method of a ceramic filter plate detection liquid comprises the following steps:
the first step is as follows: preparing raw materials, namely taking 50 parts of pure water, 4 parts of hydroquinone, 10 parts of sodium sulfite, 25 parts of ethylene glycol ether, 8 parts of glycerol polyoxyethylene allyl ether and 3 parts of dodecyl trimethyl ammonium bromide for later use according to parts by weight;
the second step is that: stirring, namely adding half of the weighed pure water into a stirrer, sequentially adding the ethylene glycol ether, the glycerol polyoxyethylene allyl ether and the dodecyl trimethyl ammonium bromide in the stirring process, after uniformly stirring and no layering, sequentially adding hydroquinone and sodium sulfite, after uniformly stirring and no layering, continuously adding the rest pure water, and uniformly stirring to obtain a detection liquid of the ceramic filter plate;
the third step: and (4) placing the detection liquid of the ceramic filter plate prepared in the second step into a closed lightproof container for storage.
A first detection experiment:
the ceramic filter plate detection solutions prepared in the above five examples were tested, 10 ceramic filter plates were detected, and the contrast permeation time and the development definition were integrated, and the detection time is shown in table 1:
TABLE 1 comparison of detection times
| Example one | Example two | EXAMPLE III | Example four | EXAMPLE five | |
| Time of detection | 5.5 minutes | 6.8 minutes | 6.2 minutes | 6.5 minutes | 5.0 minutes |
And (3) detection experiment II:
the ceramic filter plate detection liquid prepared in the fifth example is used for detecting the ceramic filter plates of the same production batch, 48 ceramic filter plates with internal fine defects detected by the detection liquid are used as a comparative example 1, 48 ceramic filter plates without internal defects detected by the detection liquid are used as a comparative example 2, and the ceramic filter plates are sent to the same manufacturer for production and use for four times, wherein the use effects are shown in the following table 2:
TABLE 2 comparison of the results of use
The comparison and detection experiments show that: the ceramic filter plate qualified by the detection of the ceramic filter plate detection liquid obviously has longer service life and longer cleaning period (after the ceramic filter plate is used for a period of time, the internal micropores are blocked, the filtering efficiency is greatly reduced, and after the blockage of the micropores is cleaned by strong acid, the filter plate is reused).
The invention also provides a detection method of the ceramic filter plate, the detection liquid of the ceramic filter plate prepared by the preparation method is as follows:
the first step is as follows: cleaning the surface of the ceramic filter plate by using compressed air;
the second step is that: after the ceramic filter plate is placed on a lamp inspection table, brushing a layer of ceramic filter plate detection liquid, wherein the ceramic filter plate detection liquid can be brushed by adopting a method of dipping with a hairbrush or spraying with a water gun;
the third step: observing the internal structure of the ceramic filter plate under the strong light of the lamp inspection table and the developing effect of the detection liquid;
the fourth step: and (3) drying the detected ceramic filter plate and then putting the ceramic filter plate into an appointed position, wherein the drying mode is to put the ceramic filter plate into an oven or a high-temperature curing room for drying.
At present, the inspection link of the internal structure of the ceramic filter plate in the industry is always missing, which can cause the ceramic filter plate with unqualified production or incomplete cleaning to still be put into the production link of the real production, the unqualified ceramic filter plate not only can directly influence the filtering effect, but also can cause the service life of the ceramic filter plate to be reduced, and the inspection method is directly related to the operation cost of enterprises.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed. The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (6)
1. The preparation method of the detection liquid for the ceramic filter plate is characterized by comprising the following steps of:
the first step is as follows: preparing raw materials, taking 50-70 parts of pure water, 2-8 parts of hydroquinone, 10-20 parts of sodium sulfite, 20-30 parts of ethylene glycol ether, 5-10 parts of glycerol polyoxyethylene allyl ether and 1-5 parts of dodecyl trimethyl ammonium bromide for later use;
the second step is that: and (2) stirring, namely adding half of the weighed pure water into a stirrer, sequentially adding the ethylene glycol ether, the glycerol polyoxyethylene allyl ether and the dodecyl trimethyl ammonium bromide in the stirring process, after uniformly stirring and no layering, sequentially adding hydroquinone and sodium sulfite, after uniformly stirring and no layering, continuously adding the rest amount of pure water, and uniformly stirring to obtain the ceramic filter plate detection liquid.
2. The method for preparing the ceramic filter plate detection solution according to claim 1, wherein the ceramic filter plate detection solution is stored in a sealed and light-proof container.
3. The method for preparing the detection solution for the ceramic filter plate according to claim 1, wherein the raw materials are prepared by taking 50 parts by weight of pure water, 4 parts by weight of hydroquinone, 10 parts by weight of sodium sulfite, 25 parts by weight of ethylene glycol ether, 8 parts by weight of glycerol polyoxyethylene allyl ether and 3 parts by weight of dodecyltrimethylammonium bromide for later use in the first step.
4. The method for detecting a ceramic filter plate, which comprises using the ceramic filter plate detection solution according to any one of claims 1 to 3.
5. The method for inspecting a ceramic filter plate according to claim 4, comprising the steps of:
the first step is as follows: cleaning the surface of the ceramic filter plate;
the second step is that: placing the ceramic filter plate on a lamp inspection table, and brushing the surface of the ceramic filter plate with the detection liquid of the ceramic filter plate;
the third step: and observing whether the internal structure of the ceramic filter plate has defects or not under the strong light of the lamp inspection table.
6. The method for testing a ceramic filter plate according to claim 5, wherein the brushing method of the ceramic filter plate testing solution is brush dipping or water gun spraying.
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| CN202111341604.9A CN114062222B (en) | 2021-11-12 | 2021-11-12 | Preparation method of ceramic filter plate detection liquid and detection method of ceramic filter plate |
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| CN202111341604.9A CN114062222B (en) | 2021-11-12 | 2021-11-12 | Preparation method of ceramic filter plate detection liquid and detection method of ceramic filter plate |
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| CN114062222B CN114062222B (en) | 2024-07-23 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS64951A (en) * | 1987-06-23 | 1989-01-05 | Fuji Photo Film Co Ltd | Image forming method |
| CN108603218A (en) * | 2016-02-05 | 2018-09-28 | 豪夫迈·罗氏有限公司 | Measurement for the compound with anti-influenza activity |
| CN109307676A (en) * | 2017-07-27 | 2019-02-05 | 东莞华晶粉末冶金有限公司 | Imaging agent and ceramic method for detection fault detection |
| CN109375482A (en) * | 2018-11-01 | 2019-02-22 | 博罗县东明新材料研究所 | PCB developer solution and preparation method thereof |
| CN111308866A (en) * | 2020-04-01 | 2020-06-19 | 烟台核晶陶瓷新材料有限公司 | Developing solution for crucible detection and preparation method and use method thereof |
-
2021
- 2021-11-12 CN CN202111341604.9A patent/CN114062222B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS64951A (en) * | 1987-06-23 | 1989-01-05 | Fuji Photo Film Co Ltd | Image forming method |
| CN108603218A (en) * | 2016-02-05 | 2018-09-28 | 豪夫迈·罗氏有限公司 | Measurement for the compound with anti-influenza activity |
| CN109307676A (en) * | 2017-07-27 | 2019-02-05 | 东莞华晶粉末冶金有限公司 | Imaging agent and ceramic method for detection fault detection |
| CN109375482A (en) * | 2018-11-01 | 2019-02-22 | 博罗县东明新材料研究所 | PCB developer solution and preparation method thereof |
| CN111308866A (en) * | 2020-04-01 | 2020-06-19 | 烟台核晶陶瓷新材料有限公司 | Developing solution for crucible detection and preparation method and use method thereof |
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