CN112908709A - Working electrolyte with high ripple current resistance for capacitor - Google Patents
Working electrolyte with high ripple current resistance for capacitor Download PDFInfo
- Publication number
- CN112908709A CN112908709A CN202110158211.8A CN202110158211A CN112908709A CN 112908709 A CN112908709 A CN 112908709A CN 202110158211 A CN202110158211 A CN 202110158211A CN 112908709 A CN112908709 A CN 112908709A
- Authority
- CN
- China
- Prior art keywords
- parts
- mass
- working electrolyte
- ripple current
- current resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 52
- 239000003792 electrolyte Substances 0.000 title claims abstract description 23
- 239000002904 solvent Substances 0.000 claims abstract description 32
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000654 additive Substances 0.000 claims abstract description 15
- 230000000996 additive effect Effects 0.000 claims abstract description 15
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 15
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 15
- 239000001257 hydrogen Substances 0.000 claims abstract description 15
- 239000006096 absorbing agent Substances 0.000 claims abstract description 12
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical group O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 37
- 238000003756 stirring Methods 0.000 claims description 34
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 24
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 24
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 24
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 24
- 239000012498 ultrapure water Substances 0.000 claims description 24
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical group OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 21
- PEDCQBHIVMGVHV-UHFFFAOYSA-N glycerol group Chemical group OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 21
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 18
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 18
- 239000002202 Polyethylene glycol Substances 0.000 claims description 17
- 229920001223 polyethylene glycol Polymers 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 238000002360 preparation method Methods 0.000 claims description 16
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid group Chemical group C(CCCCCCCCC(=O)O)(=O)O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 claims description 14
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 12
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 12
- 229910017604 nitric acid Inorganic materials 0.000 claims description 12
- 239000004006 olive oil Substances 0.000 claims description 12
- 235000008390 olive oil Nutrition 0.000 claims description 12
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- OWCLRJQYKBAMOL-UHFFFAOYSA-N 2-butyloctanedioic acid Chemical group CCCCC(C(O)=O)CCCCCC(O)=O OWCLRJQYKBAMOL-UHFFFAOYSA-N 0.000 claims description 7
- ZPTVNYMJQHSSEA-UHFFFAOYSA-N 4-nitrotoluene Chemical group CC1=CC=C([N+]([O-])=O)C=C1 ZPTVNYMJQHSSEA-UHFFFAOYSA-N 0.000 claims description 7
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical group OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 229920001732 Lignosulfonate Polymers 0.000 claims description 7
- 229930195725 Mannitol Natural products 0.000 claims description 7
- BNMJSBUIDQYHIN-UHFFFAOYSA-N butyl dihydrogen phosphate Chemical group CCCCOP(O)(O)=O BNMJSBUIDQYHIN-UHFFFAOYSA-N 0.000 claims description 7
- 239000000594 mannitol Substances 0.000 claims description 7
- 235000010355 mannitol Nutrition 0.000 claims description 7
- 230000001737 promoting effect Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical group OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000005543 nano-size silicon particle Substances 0.000 claims description 4
- 238000009210 therapy by ultrasound Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 230000036571 hydration Effects 0.000 claims description 3
- 238000006703 hydration reaction Methods 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 239000008151 electrolyte solution Substances 0.000 claims 9
- 239000003623 enhancer Substances 0.000 claims 3
- 235000010855 food raising agent Nutrition 0.000 claims 2
- 239000000243 solution Substances 0.000 claims 2
- 230000000052 comparative effect Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/022—Electrolytes; Absorbents
- H01G9/035—Liquid electrolytes, e.g. impregnating materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/145—Liquid electrolytic capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Silicon Compounds (AREA)
Abstract
The invention relates to the field of capacitors, and provides a working electrolyte with high ripple current resistance for a capacitor, which is used for improving the ripple current resistance of an electrolytic capacitor. The invention provides a working electrolyte with high ripple current resistance for a capacitor, which comprises: 50-80 parts of a main solvent, 2-20 parts of an auxiliary solvent, 1-8 parts of a main solute, 0.5-5 parts of an auxiliary solute, 1-15 parts of a flash voltage improver, 0.3-8 parts of a hydrogen absorbing agent, 0.05-5 parts of a formation improver, 0.5-6 parts of a hydration-prevention additive and 0.05-5 parts of a stopping agent. The sparking voltage of the capacitor is obviously improved, and the voltage resistance of the electrolytic capacitor is improved, so that the voltage resistance of the electrolytic capacitor is improved, and the ripple current resistance of the electrolytic capacitor is improved.
Description
Technical Field
The invention relates to the field of capacitors, in particular to a working electrolyte with high ripple current resistance for a capacitor.
Background
Capacitors play an important role in circuits such as tuning, bypassing, coupling, filtering, etc. However, the requirement of the capacitor on performance is very high, the quality of working electrolyte determines the performance of the capacitor, such as stability, service life and electric leakage, the performance directly determines the quality of the capacitor, and the electrolyte belongs to the core technology of electrolytic capacitance.
There is a lack of miniaturized high ripple tolerant capacitors on the market today.
Disclosure of Invention
The technical problem solved by the invention is to improve the ripple current resistance of the electrolytic capacitor and provide the working electrolyte with high ripple current resistance for the capacitor.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a working electrolyte resistant to high ripple current values for capacitors, comprising:
50-80 parts of a main solvent, 2-20 parts of an auxiliary solvent, 1-8 parts of a main solute, 0.5-5 parts of an auxiliary solute, 1-15 parts of a flash voltage improver, 0.3-8 parts of a hydrogen absorbing agent, 0.05-5 parts of a formation improver, 0.5-6 parts of a hydration-prevention additive and 0.05-5 parts of a stopping agent.
Different proportions are adopted, and a sparking voltage improver is added, so that the sparking voltage of the capacitor can be effectively improved.
The sparking voltage of the capacitor is obviously improved, and the voltage resistance of the electrolytic capacitor is improved, so that the voltage resistance of the electrolytic capacitor is improved, and the ripple current resistance of the electrolytic capacitor is improved.
Preferably, 70-80 parts by mass of a main solvent, 10-20 parts by mass of an auxiliary solvent, 6-8 parts by mass of a main solute, 2-5 parts by mass of an auxiliary solute, 5-15 parts by mass of a flash voltage improver, 2-8 parts by mass of a hydrogen absorbing agent, 2-5 parts by mass of a formation improver, 2-6 parts by mass of a waterproof additive and 1-5 parts by mass of a retardant.
Preferably, 70 parts by mass of a main solvent, 10 parts by mass of an auxiliary solvent, 6 parts by mass of a main solute, 2 parts by mass of an auxiliary solute, 5 parts by mass of a flash voltage improver, 2 parts by mass of a hydrogen absorbing agent, 2 parts by mass of a formation improver, 2 parts by mass of a water-resistant additive and 1 part by mass of a retardant.
Preferably, the primary solvent is ethylene glycol; the auxiliary solvent is glycerol; the main solute is 2-butyl suberic acid, the auxiliary solute is sebacic acid, the auxiliary solvent is diethylene glycol, the hydrogen absorption agent is p-nitrotoluene alcohol, the hydration-resistant additive is mannitol, the formation promoting agent is monobutyl phosphate, and the stopping agent is lignosulfonate.
Preferably, the flash fire promoting agent is a modified silica sol.
Preferably, the preparation method of the modified silica sol comprises the following steps:
taking 0.5-1 part by mass of polyvinyl alcohol, 0.5-1 part by mass of polyethylene glycol, 1-5 parts by mass of ethyl orthosilicate, 0.02-0.04 part by mass of nitric acid, 0.05-0.1 part by mass of glutaraldehyde, 10-15 parts by mass of olive oil and 10-12 parts by mass of ultrapure water;
dissolving polyvinyl alcohol into ultrapure water, adding ethyl orthosilicate and nitric acid at room temperature, fully stirring, and continuing stirring at 70-80 ℃ for 48 hours to obtain a first solution;
adding the first solution into olive oil, performing ultrasonic treatment for 30min, adding glutaraldehyde, stirring for 24h, adding polyethylene glycol, fully stirring, drying, washing with acetone and water for 2-3 times, and drying to obtain modified nano silicon dioxide;
dispersing the modified nano-silica into the silica sol to obtain the modified silica sol.
Preferably, the preparation method of the silica sol comprises the following steps:
taking 17-20 parts by mass of ultrapure water, 1-4 parts by mass of N, N-dimethylformamide, 1-4 parts by mass of isopropanol and 5-7 parts by mass of ethyl orthosilicate;
and uniformly mixing ultrapure water, N-dimethylformamide and isopropanol, adding tetraethoxysilane, and stirring for 1-2 hours at the speed of 600-800 r/min to obtain the silica sol.
Preferably, 0.6-1 part by mass of polyvinyl alcohol, 0.6-1 part by mass of polyethylene glycol, 3-5 parts by mass of ethyl orthosilicate, 0.03-0.04 part by mass of nitric acid, 0.06-0.1 part by mass of glutaraldehyde, 12-15 parts by mass of olive oil and 11-12 parts by mass of ultrapure water are taken.
Preferably, 0.6 part by mass of polyvinyl alcohol, 0.6 part by mass of polyethylene glycol, 3 parts by mass of ethyl orthosilicate, 0.03 part by mass of nitric acid, 0.06 part by mass of glutaraldehyde, 12 parts by mass of olive oil, and 11 parts by mass of ultrapure water are taken.
Preferably, the preparation method comprises:
the main solvent and the auxiliary solvent are mixed evenly,
adding a main solute and an auxiliary solute under the condition that the temperature is 100-115 ℃, stirring and heating to 130-135 ℃, preserving heat and stirring for reaction for 10-40 min,
and cooling to 70-90 ℃, and adding a sparking voltage improver, a hydrogen absorbing agent, a formation improver, a waterproof additive and a stopping agent.
Compared with the prior art, the invention has the beneficial effects that: the sparking voltage of the capacitor is obviously improved, and the voltage resistance of the electrolytic capacitor is improved, so that the voltage resistance of the electrolytic capacitor is improved, and the ripple current resistance of the electrolytic capacitor is improved.
Based on a large number of experiments, the inventor finds that the traditional silica sol, polyvinyl alcohol, polyethylene glycol and the like are used together or singly, so that the sparking voltage of the electrolyte is difficult to further increase.
Occasionally, the inventors have found that the sparking voltage of the capacitor can be further increased by modifying the nanosilica and then adding it to the silica sol.
Detailed Description
The following examples are further illustrative of the present invention and are not intended to be limiting thereof.
Example 1
A working electrolyte resistant to high ripple current values for capacitors, comprising:
70g of ethylene glycol, 10g of glycerol, 6g of 2-butyl suberic acid, 2g of sebacic acid, 5g of a flash fire voltage improver, 2g of p-nitrotoluene alcohol, 2g of monobutyl phosphate, 2g of mannitol and 1g of lignosulfonate. The flash fire promoting agent is modified silica sol.
The preparation method of the modified silica sol comprises the following steps:
0.6g of polyvinyl alcohol, 0.6g of polyethylene glycol, 3g of ethyl orthosilicate, 0.03g of nitric acid, 0.06g of glutaraldehyde, 12g of olive oil and 11g of ultrapure water are taken. (ii) a
Dissolving polyvinyl alcohol into ultrapure water, adding ethyl orthosilicate and nitric acid at room temperature, fully stirring, and continuing stirring at 70-80 ℃ for 48 hours to obtain a first solution;
adding the first solution into olive oil, performing ultrasonic treatment for 30min, adding glutaraldehyde, stirring for 24h, adding polyethylene glycol, fully stirring, drying, washing with acetone and water for 2-3 times, and drying to obtain modified nano silicon dioxide;
dispersing the modified nano-silica into the silica sol to obtain the modified silica sol.
The preparation method of the silica sol comprises the following steps:
taking 18g of ultrapure water, 2g of N, N-dimethylformamide, 2g of isopropanol and 6g of tetraethoxysilane;
and uniformly mixing ultrapure water, N-dimethylformamide and isopropanol, adding tetraethoxysilane, and stirring for 1-2 hours at the speed of 600-800 r/min to obtain the silica sol.
The preparation method comprises the following steps:
the main solvent and the auxiliary solvent are mixed evenly,
adding a main solute and an auxiliary solute under the condition that the temperature is 100-115 ℃, stirring and heating to 130-135 ℃, preserving heat and stirring for reaction for 10-40 min,
and cooling to 70-90 ℃, and adding a sparking voltage improver, a hydrogen absorbing agent, a formation improver, a waterproof additive and a stopping agent.
Different proportions are adopted, and a sparking voltage improver is added, so that the sparking voltage of the capacitor can be effectively improved.
The sparking voltage of the capacitor is obviously improved, the voltage resistance of the electrolytic capacitor is improved, and the electrolyte spark voltage is improved, so that the voltage resistance of the electrolytic capacitor is improved, and the ripple current resistance of the electrolytic capacitor is improved.
Example 2
A working electrolyte resistant to high ripple current values for capacitors, comprising:
70g of ethylene glycol, 10g of glycerol, 6g of 2-butyl suberic acid, 2g of sebacic acid, 5g of a flash fire voltage improver, 2g of p-nitrotoluene alcohol, 2g of monobutyl phosphate, 2g of mannitol and 1g of lignosulfonate. The flash fire promoting agent is modified silica sol.
The preparation method of the modified silica sol comprises the following steps:
0.6g of polyvinyl alcohol, 3g of ethyl orthosilicate, 0.03g of nitric acid, 0.06g of glutaraldehyde, 12g of olive oil and 11.6g of ultrapure water are taken. (ii) a
Dissolving polyvinyl alcohol into ultrapure water, adding ethyl orthosilicate and nitric acid at room temperature, fully stirring, and continuing stirring at 70-80 ℃ for 48 hours to obtain a first solution;
adding the first solution into olive oil, performing ultrasonic treatment for 30min, adding glutaraldehyde, stirring for 24h, fully stirring, drying, washing with acetone and water for 2-3 times, and drying to obtain modified nano-silicon dioxide;
dispersing the modified nano-silica into the silica sol to obtain the modified silica sol.
The preparation method of the silica sol comprises the following steps:
taking 18g of ultrapure water, 2g of N, N-dimethylformamide, 2g of isopropanol and 6g of tetraethoxysilane;
and uniformly mixing ultrapure water, N-dimethylformamide and isopropanol, adding tetraethoxysilane, and stirring for 1-2 hours at the speed of 600-800 r/min to obtain the silica sol.
The preparation method comprises the following steps:
the main solvent and the auxiliary solvent are mixed evenly,
adding a main solute and an auxiliary solute under the condition that the temperature is 100-115 ℃, stirring and heating to 130-135 ℃, preserving heat and stirring for reaction for 10-40 min,
and cooling to 70-90 ℃, and adding a sparking voltage improver, a hydrogen absorbing agent, a formation improver, a waterproof additive and a stopping agent.
Example 3
A working electrolyte resistant to high ripple current values for capacitors, comprising:
70g of ethylene glycol, 10g of glycerol, 6g of 2-butyl suberic acid, 2g of sebacic acid, 5g of a flash fire voltage improver, 2g of p-nitrotoluene alcohol, 2g of monobutyl phosphate, 2g of mannitol and 1g of lignosulfonate. The flash fire promoting agent is silica sol.
The preparation method of the silica sol comprises the following steps:
taking 18g of ultrapure water, 2g of N, N-dimethylformamide, 2g of isopropanol and 6g of tetraethoxysilane;
and uniformly mixing ultrapure water, N-dimethylformamide and isopropanol, adding tetraethoxysilane, and stirring for 1-2 hours at the speed of 600-800 r/min to obtain the silica sol.
The preparation method comprises the following steps:
the main solvent and the auxiliary solvent are mixed evenly,
adding a main solute and an auxiliary solute under the condition that the temperature is 100-115 ℃, stirring and heating to 130-135 ℃, preserving heat and stirring for reaction for 10-40 min,
and cooling to 70-90 ℃, and adding a sparking voltage improver, a hydrogen absorbing agent, a formation improver, a waterproof additive and a stopping agent.
Example 4
A working electrolyte resistant to high ripple current values for capacitors, comprising:
70g of ethylene glycol, 10g of glycerol, 6g of 2-butyl suberic acid, 2g of sebacic acid, 5g of a flash fire voltage improver, 2g of p-nitrotoluene alcohol, 2g of monobutyl phosphate, 2g of mannitol and 1g of lignosulfonate. The flash fire promoting agent comprises 3.8g of modified silica sol, 0.6g of polyethylene glycol and 0.6g of polyvinyl alcohol.
The preparation method of the silica sol comprises the following steps:
taking 18g of ultrapure water, 2g of N, N-dimethylformamide, 2g of isopropanol and 6g of tetraethoxysilane;
and uniformly mixing ultrapure water, N-dimethylformamide and isopropanol, adding tetraethoxysilane, and stirring for 1-2 hours at the speed of 600-800 r/min to obtain the silica sol.
The preparation method comprises the following steps:
the main solvent and the auxiliary solvent are mixed evenly,
adding a main solute and an auxiliary solute under the condition that the temperature is 100-115 ℃, stirring and heating to 130-135 ℃, preserving heat and stirring for reaction for 10-40 min,
and cooling to 70-90 ℃, and adding a sparking voltage improver, a hydrogen absorbing agent, a formation improver, a waterproof additive and a stopping agent.
Comparative example 1
A working electrolyte resistant to high ripple current values for capacitors, comprising:
70g of ethylene glycol, 10g of glycerol, 6g of 2-butyl suberic acid, 2g of sebacic acid, 2g of p-nitrotoluene alcohol, 2g of monobutyl phosphate, 2g of mannitol and 1g of lignosulfonate.
Examples of the experiments
The electrolytes of examples 1 to 4 and comparative example were used to fabricate small-sized aluminum electrolytic capacitors.
The sparking voltages of the capacitors made in the examples are shown in the following table.
Sparking voltage | |
Example 1 | 851V |
Example 2 | 706V |
Example 3 | 677V |
Example 4 | 724V |
Comparative example 1 | 496V |
As can be seen from the above table, the modified nano-silica is added to the silica sol in example 1, and the nano-silica is loaded with the polyethylene glycol and the polyvinyl alcohol, so that the sparking voltage is significantly increased, and the ripple current resistance of the capacitor is further improved to a certain extent.
In the embodiment 2, the nano-silica loaded polyethylene glycol is not adopted, and the nano-silica loaded polyvinyl alcohol is only adopted, so that the sparking voltage is low; in example 3, only silica sol is used, and the sparking voltage is also low, which shows that the sparking voltage can be further improved only by dispersing polyethylene glycol and polyvinyl alcohol modified nano-silica into the silica sol.
Example 4 also shows that the effect of silica sol, polyethylene glycol and polyvinyl alcohol is weaker than that of example 1, and the combination or single use of the traditional silica sol or polyethylene glycol is difficult to further increase the flash fire voltage.
The electrolyte of comparative example 1 was not charged with the sparking voltage booster and the sparking voltage was lower.
The above detailed description is specific to possible embodiments of the present invention, and the above embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention should be included in the present claims.
Claims (10)
1. The utility model provides a working electrolyte of resistant high ripple current value for condenser which characterized in that includes:
50-80 parts of a main solvent, 2-20 parts of an auxiliary solvent, 1-8 parts of a main solute, 0.5-5 parts of an auxiliary solute, 1-15 parts of a flash voltage improver, 0.3-8 parts of a hydrogen absorbing agent, 0.05-5 parts of a formation improver, 0.5-6 parts of a hydration-prevention additive and 0.05-5 parts of a stopping agent.
2. The working electrolyte solution with high ripple current resistance for capacitors according to claim 1, wherein the working electrolyte solution comprises 70 to 80 parts by mass of a main solvent, 10 to 20 parts by mass of an auxiliary solvent, 6 to 8 parts by mass of a main solute, 2 to 5 parts by mass of an auxiliary solute, 5 to 15 parts by mass of a spark voltage enhancer, 2 to 8 parts by mass of a hydrogen getter, 2 to 5 parts by mass of a formation enhancer, 2 to 6 parts by mass of a water-resistant additive, and 1 to 5 parts by mass of a retardant.
3. The working electrolyte solution with high ripple current resistance for capacitors according to claim 1, wherein the working electrolyte solution comprises 70 parts by mass of a main solvent, 10 parts by mass of an auxiliary solvent, 6 parts by mass of a main solute, 2 parts by mass of an auxiliary solute, 5 parts by mass of a sparking voltage raising agent, 2 parts by mass of a hydrogen absorbing agent, 2 parts by mass of a formation raising agent, 2 parts by mass of a hydration preventing additive, and 1 part by mass of a stopping agent.
4. The working electrolyte solution with high ripple current resistance for capacitors according to claim 2, wherein the main solvent is ethylene glycol; the auxiliary solvent is glycerol; the main solute is 2-butyl suberic acid, the auxiliary solute is sebacic acid, the auxiliary solvent is diethylene glycol, the hydrogen absorption agent is p-nitrotoluene alcohol, the hydration-resistant additive is mannitol, the formation promoting agent is monobutyl phosphate, and the stopping agent is lignosulfonate.
5. The working electrolyte with high ripple current resistance for capacitors according to claim 1, wherein the sparking enhancer is a modified silica sol.
6. The working electrolyte with high ripple current resistance for the capacitor according to claim 1, wherein the preparation method of the modified silica sol comprises:
taking 0.5-1 part by mass of polyvinyl alcohol, 0.5-1 part by mass of polyethylene glycol, 1-5 parts by mass of ethyl orthosilicate, 0.02-0.04 part by mass of nitric acid, 0.05-0.1 part by mass of glutaraldehyde, 10-15 parts by mass of olive oil and 10-12 parts by mass of ultrapure water;
dissolving polyvinyl alcohol into ultrapure water, adding ethyl orthosilicate and nitric acid at room temperature, fully stirring, and continuing stirring at 70-80 ℃ for 48 hours to obtain a first solution;
adding the first solution into olive oil, performing ultrasonic treatment for 30min, adding glutaraldehyde, stirring for 24h, adding polyethylene glycol, fully stirring, drying, washing with acetone and water for 2-3 times, and drying to obtain modified nano silicon dioxide;
dispersing the modified nano-silica into the silica sol to obtain the modified silica sol.
7. The working electrolyte with high ripple current resistance for the capacitor according to claim 1, wherein the preparation method of the silica sol comprises:
taking 17-20 parts by mass of ultrapure water, 1-4 parts by mass of N, N-dimethylformamide, 1-4 parts by mass of isopropanol and 5-7 parts by mass of ethyl orthosilicate;
and uniformly mixing ultrapure water, N-dimethylformamide and isopropanol, adding tetraethoxysilane, and stirring for 1-2 hours at the speed of 600-800 r/min to obtain the silica sol.
8. The working electrolyte solution with high ripple current resistance for capacitors according to claim 1, wherein the working electrolyte solution comprises 0.6 to 1 part by mass of polyvinyl alcohol, 0.6 to 1 part by mass of polyethylene glycol, 3 to 5 parts by mass of ethyl orthosilicate, 0.03 to 0.04 part by mass of nitric acid, 0.06 to 0.1 part by mass of glutaraldehyde, 12 to 15 parts by mass of olive oil, and 11 to 12 parts by mass of ultrapure water.
9. The working electrolyte solution with high ripple current resistance for capacitors as claimed in claim 1, wherein the working electrolyte solution comprises 0.6 parts by mass of polyvinyl alcohol, 0.6 parts by mass of polyethylene glycol, 3 parts by mass of ethyl orthosilicate, 0.03 parts by mass of nitric acid, 0.06 parts by mass of glutaraldehyde, 12 parts by mass of olive oil, and 11 parts by mass of ultrapure water.
10. The working electrolyte with high ripple current resistance for capacitors according to claim 1, wherein the preparation method comprises:
the main solvent and the auxiliary solvent are mixed evenly,
adding a main solute and an auxiliary solute under the condition that the temperature is 100-115 ℃, stirring and heating to 130-135 ℃, preserving heat and stirring for reaction for 10-40 min,
and cooling to 70-90 ℃, and adding a sparking voltage improver, a hydrogen absorbing agent, a formation improver, a waterproof additive and a stopping agent.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110158211.8A CN112908709B (en) | 2021-02-05 | 2021-02-05 | Working electrolyte with high ripple current resistance for capacitor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110158211.8A CN112908709B (en) | 2021-02-05 | 2021-02-05 | Working electrolyte with high ripple current resistance for capacitor |
Publications (2)
Publication Number | Publication Date |
---|---|
CN112908709A true CN112908709A (en) | 2021-06-04 |
CN112908709B CN112908709B (en) | 2022-10-11 |
Family
ID=76122501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110158211.8A Active CN112908709B (en) | 2021-02-05 | 2021-02-05 | Working electrolyte with high ripple current resistance for capacitor |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112908709B (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102418548A (en) * | 2011-09-28 | 2012-04-18 | 韩林华 | Mortar suspending agent capable of preventing spontaneous combustion of coal dust |
CN102616766A (en) * | 2012-01-19 | 2012-08-01 | 中国科学院山西煤炭化学研究所 | Preparation method for heteratom-containing ordered mesoporous carbon with high specific capacitance |
CN102643072A (en) * | 2012-04-27 | 2012-08-22 | 江门市安诺特炊具制造有限公司 | Nanometer inorganic non-sticking water-based paint and preparation method thereof |
CN104087086A (en) * | 2014-06-16 | 2014-10-08 | 华南理工大学 | Hydrophilic aluminum foil with organic-inorganic hybrid coating, and preparation method and application thereof |
CN106811179A (en) * | 2017-01-03 | 2017-06-09 | 温州大学 | The preparation method of polyethylene glycol/silicon dioxide composite phase-change energy storage material |
CN108257786A (en) * | 2016-12-29 | 2018-07-06 | 深圳新宙邦科技股份有限公司 | A kind of resistance to big ripple electrolyte for capacitor of contracting body |
CN108484055A (en) * | 2018-05-30 | 2018-09-04 | 周晓东 | A kind of cement-based waterproof thermal insulation board |
CN109326447A (en) * | 2018-11-07 | 2019-02-12 | 广州金立电子有限公司 | A kind of electrolytic capacitor |
-
2021
- 2021-02-05 CN CN202110158211.8A patent/CN112908709B/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102418548A (en) * | 2011-09-28 | 2012-04-18 | 韩林华 | Mortar suspending agent capable of preventing spontaneous combustion of coal dust |
CN102616766A (en) * | 2012-01-19 | 2012-08-01 | 中国科学院山西煤炭化学研究所 | Preparation method for heteratom-containing ordered mesoporous carbon with high specific capacitance |
CN102643072A (en) * | 2012-04-27 | 2012-08-22 | 江门市安诺特炊具制造有限公司 | Nanometer inorganic non-sticking water-based paint and preparation method thereof |
CN104087086A (en) * | 2014-06-16 | 2014-10-08 | 华南理工大学 | Hydrophilic aluminum foil with organic-inorganic hybrid coating, and preparation method and application thereof |
CN108257786A (en) * | 2016-12-29 | 2018-07-06 | 深圳新宙邦科技股份有限公司 | A kind of resistance to big ripple electrolyte for capacitor of contracting body |
CN106811179A (en) * | 2017-01-03 | 2017-06-09 | 温州大学 | The preparation method of polyethylene glycol/silicon dioxide composite phase-change energy storage material |
CN108484055A (en) * | 2018-05-30 | 2018-09-04 | 周晓东 | A kind of cement-based waterproof thermal insulation board |
CN109326447A (en) * | 2018-11-07 | 2019-02-12 | 广州金立电子有限公司 | A kind of electrolytic capacitor |
Also Published As
Publication number | Publication date |
---|---|
CN112908709B (en) | 2022-10-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1744247B (en) | Aluminium electrolytic capacitor working electrolyte and capacitor obtained thereof | |
CN101599367B (en) | 600V extra-high voltage aluminum electrolyte capacitor working electrolyte and preparation and application thereof | |
CN105244165A (en) | Chip type high-voltage aluminum electrolytic capacitor, electrolyte thereof and preparation method of electrolyte | |
CN103915258A (en) | 650V-700V extra-high-voltage aluminum electrolytic capacitor, working electrolyte and preparation method thereof | |
CN106158380A (en) | A kind of electrolyte of high-pressure aluminum electrolytic capacitor and preparation method thereof | |
CN109192514B (en) | Aluminum electrolytic capacitor electrolyte, preparation method thereof and aluminum electrolytic capacitor | |
CN111653430B (en) | Electrolyte for high-sparking voltage high-conductivity aluminum electrolytic capacitor and aluminum electrolytic capacitor | |
CN104240956A (en) | Working electrolyte for ultrahigh-voltage aluminium electrolytic capacitor and manufacturing method thereof | |
CN113674997B (en) | Electrolyte of long-life liquid capacitor and preparation method thereof | |
CN109616323A (en) | A kind of alminium electrolytic condenser electrolyte and preparation method thereof | |
CN112908709B (en) | Working electrolyte with high ripple current resistance for capacitor | |
CN101840786A (en) | Working electrolyte of aluminum electrolytic capacitor for energy-saving lamp and preparation method thereof | |
CN1117183C (en) | Three-stage process for preparing electrode foil used for low-voltage aluminium-electrolytic capacitor | |
CN115863058B (en) | Electrolyte for ultrahigh-voltage ox horn aluminum electrolytic capacitor and preparation method thereof | |
CN112908708B (en) | Working electrolyte of ultrahigh-voltage aluminum electrolytic capacitor | |
CN109448993B (en) | Electrolyte of aluminum electrolytic capacitor and preparation method thereof | |
CN110931256A (en) | Electrolyte for high-voltage-resistant aluminum electrolytic capacitor and preparation method thereof | |
JPS5915374B2 (en) | Electrolyte for driving electrolytic capacitors | |
CN109616324B (en) | Electrolyte for driving aluminum electrolytic capacitor special for automobile charging pile | |
CN104538182A (en) | Electrolyte for medium and low voltage of electrolytic capacitor and preparation method of electrolyte | |
CN114783775A (en) | Solid-state aluminum electrolytic capacitor and preparation method thereof | |
CN115116751A (en) | Aluminum electrolytic capacitor electrolyte, preparation method thereof and aluminum electrolytic capacitor | |
JPH0291917A (en) | Electrolyte for driving electrolytic capacitor | |
CN110690051B (en) | 6KV lightning stroke resistant safety aluminum electrolytic capacitor and preparation method thereof | |
CN102779645B (en) | A kind of working electrolyte for aluminium electrolytic capacitor and preparation method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |