Aluminum alloy new energy blade battery shell degreasing agent and preparation method thereof

Abstract

The present invention relates to the technical field of degreasing agents, specifically disclosing a degreasing agent for aluminum alloy new energy blade battery shells and a preparation method thereof. The degreasing agent comprises the following raw materials in parts by weight: 30-35 parts of ethanol solvent, 15-20 parts of octylphenol polyoxyethylene ether, 8-12 parts of sodium dodecylbenzene sulfonate, 6-10 parts of sodium phosphate, 8-12 parts of a modifier modified by doping bentonite, 4-7 parts of sodium carboxymethyl cellulose, 2-3 parts of a silane coupling agent KH560, and 4-7 parts of a nano-agent regulating liquid. The degreasing agent of the present invention utilizes octylphenol polyoxyethylene ether, sodium dodecylbenzene sulfonate, sodium phosphate, sodium carboxymethyl cellulose, and a silane coupling agent KH560, and uses a neutral degreasing agent to avoid the problem of corrosion of the new energy blade battery shell by the product. At the same time, the degreasing efficiency of the substrate is improved through the coordination of the raw materials.

Description

Technical Field

[0001] The present invention relates to the technical field of conductive silver paste, and in particular to an aluminum alloy new energy blade battery shell degreasing agent and a preparation method thereof. Background Art

[0002] New energy batteries are mainly used in power vehicles. Due to the complex use environment, the safety performance requirements of power batteries are more stringent. The battery shell is a vital component of the power battery and plays a role of packaging; the blade battery shell used for new energy vehicle batteries needs to be treated with a degreaser during the processing and production process, and the existing degreasers mostly use acid and alkali degreasing, which is easy to corrode the product. Although neutral degreasing does not cause corrosion problems, it is easy to cause a decrease in the degreasing rate. Based on this, the present invention is optimized and improved on the basis of neutral degreasing. In order to optimize the degreasing rate performance problem, it is easy to cause the degreasing time of the product and the temperature stability of the product to deteriorate. Based on this, the present invention further improves it. Summary of the Invention

[0003] In view of the defects of the prior art, the purpose of the present invention is to provide an aluminum alloy new energy blade battery shell degreasing agent and a preparation method thereof to solve the problems raised in the above background technology.

[0004] The present invention solves the technical problem by adopting the following technical solutions:

[0005] The present invention provides an aluminum alloy new energy blade battery shell degreasing agent, comprising the following raw materials in parts by weight:

[0006] 30-35 parts of ethanol solvent, 15-20 parts of octylphenol polyoxyethylene ether, 8-12 parts of sodium dodecylbenzene sulfonate, 6-10 parts of sodium phosphate, 8-12 parts of a regulator modified by doping bentonite, 4-7 parts of sodium carboxymethyl cellulose, 2-3 parts of silane coupling agent KH560, and 4-7 parts of a nano-agent regulating liquid.

[0007] Preferably, the aluminum alloy new energy blade battery shell degreasing agent includes the following raw materials in parts by weight:

[0008] 32.5 parts of ethanol solvent, 17.5 parts of octylphenol polyoxyethylene ether, 10 parts of sodium dodecylbenzene sulfonate, 8 parts of sodium phosphate, 10 parts of a regulator modified by doping bentonite, 5.5 parts of sodium carboxymethyl cellulose, 2.5 parts of a silane coupling agent KH560, and 5.5 parts of a nano-agent regulating liquid.

[0009] Preferably, the preparation method of the modified regulator doped with bentonite is:

[0010] S01: adding nano-silica to a sufficient amount of 10% by mass potassium permanganate solution and stirring evenly, then transferring to a 5% by mass sodium hydroxide solution and stirring thoroughly, finally washing the nano-silica with water until neutral and drying to obtain a nano-silica agent;

[0011] S02: Add 4 to 6 parts of nano-silica agent and 1 to 3 parts of yttrium nitrate solution to 4 to 7 parts of sodium citrate solution and stir to mix, and finally add 2 to 5 parts of sodium lignin sulfonate and stir thoroughly to obtain a first nano-silica adjustment solution;

[0012] S03: adding 3 to 5 parts of bentonite to 5 to 9 parts of a 10% sodium silicate solution by mass, and then adding 1 to 3 parts of urea, stirring thoroughly to obtain a second bentonite adjustment solution;

[0013] S04: ultrasonically modifying the second bentonite agent regulating liquid and the first nano-silica regulating liquid in a weight ratio of 2:(3-5). After the ultrasonic modification is completed, the mixture is washed with water and dried to obtain a bentonite-modified regulating liquid.

[0014] Preferably, the mass fraction of the yttrium nitrate solution is 4-6%; the mass fraction of the sodium citrate solution is 10-15%.

[0015] Preferably, the ultrasonic improvement treatment has an ultrasonic power of 300-350W and an ultrasonic time of 1-2h.

[0016] Preferably, the preparation method of the bentonite agent is:

[0017] The bentonite is first heat-treated at 350-400°C for 15-20 minutes, then cooled to 205-210°C at a rate of 2-5°C / min, kept warm for 5-10 minutes, and finally cooled to 55°C at a rate of 1-3°C / min, kept warm, and the kept warm bentonite is fully stirred in a sufficient amount of hydrochloric acid solution, and finally washed with water until neutral and dried to obtain a bentonite agent.

[0018] Preferably, the mass fraction of the hydrochloric acid solution is 3-5%.

[0019] Preferably, the preparation method of the nano-agent regulating solution is:

[0020] S101: 4-7 parts of nano-alumina are mixed with 6-10 parts of 5% by mass chitosan solution;

[0021] S102: Then, 2 to 4 parts of tetrabutyl titanate, 1 to 3 parts of nano-silica sol, and 2 to 4 parts of monoethanolamine are added to S101 and the mixture is ball-milled at a speed of 1000 to 1500 r / min for 1 to 2 hours. After the ball milling is completed, the mixture is washed with water and dried to obtain a nano-alumina agent;

[0022] S103: The nano-alumina agent and the lanthanum solution are mixed and stirred thoroughly in a weight ratio of 2:5 to obtain a nano-agent adjustment solution.

[0023] Preferably, the lanthanum solution is a lanthanum chloride solution, and the mass fraction of the lanthanum chloride solution is 4-7%.

[0024] The present invention provides a method for preparing a degreasing agent for an aluminum alloy new energy blade battery shell, comprising the following steps:

[0025] The ethanol solvent, the regulator modified by doping bentonite, the nano-agent regulating liquid and the silane coupling agent KH560 are first stirred and mixed thoroughly, and then octylphenol polyoxyethylene ether, sodium dodecylbenzene sulfonate, sodium phosphate and sodium carboxymethyl cellulose are added thereto in sequence and stirred thoroughly to obtain an aluminum alloy new energy blade battery shell degreasing agent.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The degreasing agent of the present invention adopts octylphenol polyoxyethylene ether, sodium dodecylbenzene sulfonate and sodium phosphate, sodium carboxymethyl cellulose and silane coupling agent KH560 to be mutually formulated, and adopts a neutral degreasing agent, thereby avoiding the problem that the product corrodes the new energy blade battery shell, and at the same time, the degreasing efficiency of the matrix is ​​improved through the coordination between the raw materials. By adding a regulator modified by doping bentonite and a nano-agent regulating liquid, the two are coordinated and synergistically effective, further increasing the degreasing time and degreasing rate of the product, coordinating and improving the efficiency of the two, and optimizing the high temperature stability of the product;

[0028] The doped bentonite-modified conditioning agent comprises nano-silica which is treated with a potassium permanganate solution and a sodium hydroxide solution to optimize the active efficiency of the nano-silica. A first nano-silica conditioning solution is formed by mixing an yttrium nitrate solution, a sodium citrate solution and sodium lignin sulfonate, and a second bentonite conditioning solution is formed by mixing a bentonite agent, a sodium silicate solution and urea. Ultrasonic treatment is performed between the first nano-silica conditioning solution and the second bentonite conditioning solution to improve the nano-silica structure. The interface of the raw materials in the system is enhanced, and the synergistic effect between the raw materials is optimized, thereby improving product performance. The doped bentonite has a lamellar structure and is interspersed in the system to enhance the performance stability of the system and optimize the high-temperature resistance of the product. The first nano-silica conditioning solution and the second bentonite conditioning solution are then mutually harmonized and adjusted to improve the degreasing rate, degreasing time and temperature resistance stability of the product.

[0029] The bentonite agent is heat-treated at 350-400° C. for 15-20 minutes, then cooled to 205-210° C. at a rate of 2-5° C. / min, kept warm for 5-10 minutes, and finally cooled to 55° C. at a rate of 1-3° C. / min. The bentonite agent is then treated with a hydrochloric acid solution. Through continuous heat treatment and step-by-step cooling, the interlayer spacing of the bentonite flakes is optimized, the activity of the flakes is increased, and the connectivity between the raw materials of the system is enhanced, thereby further enhancing the coordination effect with the first nano-silica conditioning solution. The obtained doped bentonite-modified conditioning agent can better coordinate and optimize the degreasing rate and degreasing time in the system.

[0030] The nano-alumina in the nano-agent regulating liquid is prepared by mixing with chitosan solution, and then tetrabutyl titanate, nano-silica sol and monoethanolamine are added and ball-milled. Through the mutual coordination and blending between the raw materials, and finally coordinated with the lanthanum solution, the obtained nano-agent regulating liquid can better cooperate with the regulating agent modified by doping bentonite, further enhance the coordination effect of the product's degreasing time and degreasing rate, and further improve the product's high-temperature stability. DETAILED DESCRIPTION

[0031] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] The aluminum alloy new energy blade battery shell degreasing agent of this embodiment includes the following raw materials in parts by weight:

[0033] 30-35 parts of ethanol solvent, 15-20 parts of octylphenol polyoxyethylene ether, 8-12 parts of sodium dodecylbenzene sulfonate, 6-10 parts of sodium phosphate, 8-12 parts of a regulator modified by doping bentonite, 4-7 parts of sodium carboxymethyl cellulose, 2-3 parts of silane coupling agent KH560, and 4-7 parts of a nano-agent regulating liquid.

[0034] The aluminum alloy new energy blade battery shell degreasing agent of this embodiment includes the following raw materials in parts by weight:

[0035] 32.5 parts of ethanol solvent, 17.5 parts of octylphenol polyoxyethylene ether, 10 parts of sodium dodecylbenzene sulfonate, 8 parts of sodium phosphate, 10 parts of a regulator modified by doping bentonite, 5.5 parts of sodium carboxymethyl cellulose, 2.5 parts of a silane coupling agent KH560, and 5.5 parts of a nano-agent regulating liquid.

[0036] The preparation method of the modified regulator doped with bentonite in this embodiment is as follows:

[0037] S01: adding nano-silica to a sufficient amount of 10% by mass potassium permanganate solution and stirring evenly, then transferring to a 5% by mass sodium hydroxide solution and stirring thoroughly, finally washing the nano-silica with water until neutral and drying to obtain a nano-silica agent;

[0038] S02: Add 4 to 6 parts of nano-silica agent and 1 to 3 parts of yttrium nitrate solution to 4 to 7 parts of sodium citrate solution and stir to mix, and finally add 2 to 5 parts of sodium lignin sulfonate and stir thoroughly to obtain a first nano-silica adjustment solution;

[0039] S03: adding 3 to 5 parts of bentonite to 5 to 9 parts of a 10% sodium silicate solution by mass, and then adding 1 to 3 parts of urea, stirring thoroughly to obtain a second bentonite adjustment solution;

[0040] S04: ultrasonically modifying the second bentonite agent regulating liquid and the first nano-silica regulating liquid in a weight ratio of 2:(3-5). After the ultrasonic modification is completed, the mixture is washed with water and dried to obtain a bentonite-modified regulating liquid.

[0041] The mass fraction of the yttrium nitrate solution in this embodiment is 4-6%; the mass fraction of the sodium citrate solution is 10-15%.

[0042] The ultrasonic power of the ultrasonic improvement treatment in this embodiment is 300-350W, and the ultrasonic time is 1-2h.

[0043] The preparation method of the bentonite agent of the present embodiment is:

[0044] The bentonite is first heat-treated at 350-400°C for 15-20 minutes, then cooled to 205-210°C at a rate of 2-5°C / min, kept warm for 5-10 minutes, and finally cooled to 55°C at a rate of 1-3°C / min, kept warm, and the kept warm bentonite is fully stirred in a sufficient amount of hydrochloric acid solution, and finally washed with water until neutral and dried to obtain a bentonite agent.

[0045] The mass fraction of the hydrochloric acid solution in this embodiment is 3-5%.

[0046] The preparation method of the nanometer agent regulating solution of this embodiment is:

[0047] S101: 4-7 parts of nano-alumina are mixed with 6-10 parts of 5% by mass chitosan solution;

[0048] S102: Then, 2 to 4 parts of tetrabutyl titanate, 1 to 3 parts of nano-silica sol, and 2 to 4 parts of monoethanolamine are added to S101 and the mixture is ball-milled at a speed of 1000 to 1500 r / min for 1 to 2 hours. After the ball milling is completed, the mixture is washed with water and dried to obtain a nano-alumina agent;

[0049] S103: The nano-alumina agent and the lanthanum solution are mixed and stirred thoroughly in a weight ratio of 2:5 to obtain a nano-agent adjustment solution.

[0050] The lanthanum solution in this embodiment is a lanthanum chloride solution, and the mass fraction of the lanthanum chloride solution is 4-7%.

[0051] The preparation method of a degreasing agent for an aluminum alloy new energy blade battery shell of this embodiment includes the following steps:

[0052] The ethanol solvent, the regulator modified by doping bentonite, the nano-agent regulating liquid and the silane coupling agent KH560 are first stirred and mixed thoroughly, and then octylphenol polyoxyethylene ether, sodium dodecylbenzene sulfonate, sodium phosphate and sodium carboxymethyl cellulose are added thereto in sequence and stirred thoroughly to obtain an aluminum alloy new energy blade battery shell degreasing agent.

[0053] Example 1.

[0054] The aluminum alloy new energy blade battery shell degreasing agent of this embodiment includes the following raw materials in parts by weight:

[0055] 30 parts of ethanol solvent, 15 parts of octylphenol polyoxyethylene ether, 8 parts of sodium dodecylbenzene sulfonate, 6 parts of sodium phosphate, 8 parts of a regulator modified by doping bentonite, 4 parts of sodium carboxymethyl cellulose, 2 parts of a silane coupling agent KH560, and 4 parts of a nano-agent regulating liquid.

[0056] The preparation method of the modified regulator doped with bentonite in this embodiment is as follows:

[0057] S01: adding nano-silica to a sufficient amount of 10% by mass potassium permanganate solution and stirring evenly, then transferring to a 5% by mass sodium hydroxide solution and stirring thoroughly, finally washing the nano-silica with water until neutral and drying to obtain a nano-silica agent;

[0058] S02: Add 4 parts of nano-silica agent and 1 part of yttrium nitrate solution to 4 parts of sodium citrate solution and stir to mix, and finally add 2 parts of sodium lignin sulfonate and stir thoroughly to obtain a first nano-silica adjustment solution;

[0059] S03: adding 3 parts of bentonite to 5 parts of 10% by mass sodium silicate solution, and then adding 1 part of urea, stirring thoroughly to obtain a second bentonite adjustment solution;

[0060] S04: The second bentonite agent regulating liquid and the first nano-silica regulating liquid are ultrasonically improved in a weight ratio of 2:3. After the ultrasonic treatment is completed, the solution is washed with water and dried to obtain a regulating liquid modified with bentonite.

[0061] The mass fraction of the yttrium nitrate solution in this embodiment is 4%; the mass fraction of the sodium citrate solution is 10%.

[0062] The ultrasonic power of the ultrasonic improvement treatment in this embodiment is 300W, and the ultrasonic time is 1 hour.

[0063] The preparation method of the bentonite agent of the present embodiment is:

[0064] The bentonite is first heat-treated at 350°C for 15 minutes, then cooled to 205°C at a rate of 2°C / min, kept warm for 5 minutes, and finally cooled to 55°C at a rate of 1°C / min, kept warm, and the kept warm bentonite is fully stirred in a sufficient amount of hydrochloric acid solution, and finally washed with water until neutral and dried to obtain a bentonite agent.

[0065] The mass fraction of the hydrochloric acid solution in this embodiment is 3%.

[0066] The preparation method of the nanometer agent regulating solution of this embodiment is:

[0067] S101: 4 parts of nano-alumina are mixed with 6 parts of 5% by mass chitosan solution;

[0068] S102: Then, 2 parts of tetrabutyl titanate, 1 part of nano-silica sol and 2 parts of monoethanolamine were added to S101 and the mixture was ball-milled at a speed of 1000 r / min for 1 hour. After the ball milling was completed, the mixture was washed with water and dried to obtain a nano-alumina agent;

[0069] S103: The nano-alumina agent and the lanthanum solution are mixed and stirred thoroughly in a weight ratio of 2:5 to obtain a nano-agent adjustment solution.

[0070] The lanthanum solution in this embodiment is a lanthanum chloride solution, and the mass fraction of the lanthanum chloride solution is 4%.

[0071] The preparation method of a degreasing agent for an aluminum alloy new energy blade battery shell of this embodiment includes the following steps:

[0072] The ethanol solvent, the regulator modified by doping bentonite, the nano-agent regulating liquid and the silane coupling agent KH560 are first stirred and mixed thoroughly, and then octylphenol polyoxyethylene ether, sodium dodecylbenzene sulfonate, sodium phosphate and sodium carboxymethyl cellulose are added thereto in sequence and stirred thoroughly to obtain an aluminum alloy new energy blade battery shell degreasing agent.

[0073] Example 2.

[0074] The aluminum alloy new energy blade battery shell degreasing agent of this embodiment includes the following raw materials in parts by weight:

[0075] 35 parts of ethanol solvent, 20 parts of octylphenol polyoxyethylene ether, 12 parts of sodium dodecylbenzene sulfonate, 10 parts of sodium phosphate, 12 parts of a regulator modified by doping bentonite, 7 parts of sodium carboxymethyl cellulose, 3 parts of a silane coupling agent KH560, and 7 parts of a nano-agent regulating liquid.

[0076] The preparation method of the modified regulator doped with bentonite in this embodiment is as follows:

[0077] S01: adding nano-silica to a sufficient amount of 10% by mass potassium permanganate solution and stirring evenly, then transferring to a 5% by mass sodium hydroxide solution and stirring thoroughly, finally washing the nano-silica with water until neutral and drying to obtain a nano-silica agent;

[0078] S02: Add 6 parts of nano-silica agent and 3 parts of yttrium nitrate solution to 7 parts of sodium citrate solution and stir to mix, and finally add 5 parts of sodium lignin sulfonate and stir thoroughly to obtain a first nano-silica adjustment solution;

[0079] S03: adding 5 parts of bentonite to 9 parts of 10% by mass sodium silicate solution, and then adding 3 parts of urea, stirring thoroughly to obtain a second bentonite adjustment solution;

[0080] S04: The second bentonite agent regulating liquid and the first nano-silica regulating liquid are ultrasonically improved in a weight ratio of 2:5. After the ultrasonic treatment is completed, the mixture is washed with water and dried to obtain a regulating agent modified with bentonite.

[0081] The mass fraction of the yttrium nitrate solution in this embodiment is 6%; the mass fraction of the sodium citrate solution is 15%.

[0082] The ultrasonic power of the ultrasonic improvement treatment in this embodiment is 350W, and the ultrasonic time is 2h.

[0083] The preparation method of the bentonite agent of the present embodiment is:

[0084] The bentonite is first heat-treated at 400°C for 20 minutes, then cooled to 210°C at a rate of 5°C / min, kept warm for 10 minutes, and finally cooled to 55°C at a rate of 3°C / min, kept warm, and the kept warm bentonite is fully stirred in a sufficient amount of hydrochloric acid solution, and finally washed with water until neutral and dried to obtain a bentonite agent.

[0085] The mass fraction of the hydrochloric acid solution in this embodiment is 5%.

[0086] The preparation method of the nanometer agent regulating solution of this embodiment is:

[0087] S101: 7 parts of nano-alumina are mixed with 10 parts of 5% by mass chitosan solution;

[0088] S102: Then, 4 parts of tetrabutyl titanate, 3 parts of nano-silica sol and 4 parts of monoethanolamine were added to S101 and the mixture was ball-milled at a speed of 1500 r / min for 2 hours. After the ball milling was completed, the mixture was washed with water and dried to obtain a nano-alumina agent;

[0089] S103: The nano-alumina agent and the lanthanum solution are mixed and stirred thoroughly in a weight ratio of 2:5 to obtain a nano-agent adjustment solution.

[0090] The lanthanum solution in this embodiment is a lanthanum chloride solution, and the mass fraction of the lanthanum chloride solution is 7%.

[0091] The preparation method of a degreasing agent for an aluminum alloy new energy blade battery shell of this embodiment includes the following steps:

[0092] The ethanol solvent, the regulator modified by doping bentonite, the nano-agent regulating liquid and the silane coupling agent KH560 are first stirred and mixed thoroughly, and then octylphenol polyoxyethylene ether, sodium dodecylbenzene sulfonate, sodium phosphate and sodium carboxymethyl cellulose are added thereto in sequence and stirred thoroughly to obtain an aluminum alloy new energy blade battery shell degreasing agent.

[0093] Example 3.

[0094] The aluminum alloy new energy blade battery shell degreasing agent of this embodiment includes the following raw materials in parts by weight:

[0095] 32.5 parts of ethanol solvent, 17.5 parts of octylphenol polyoxyethylene ether, 10 parts of sodium dodecylbenzene sulfonate, 8 parts of sodium phosphate, 10 parts of a regulator modified by doping bentonite, 5.5 parts of sodium carboxymethyl cellulose, 2.5 parts of a silane coupling agent KH560, and 5.5 parts of a nano-agent regulating liquid.

[0096] The preparation method of the modified regulator doped with bentonite in this embodiment is as follows:

[0097] S01: adding nano-silica to a sufficient amount of 10% by mass potassium permanganate solution and stirring evenly, then transferring to a 5% by mass sodium hydroxide solution and stirring thoroughly, finally washing the nano-silica with water until neutral and drying to obtain a nano-silica agent;

[0098] S02: Add 5 parts of nano-silica agent and 2 parts of yttrium nitrate solution to 5.5 parts of sodium citrate solution and stir to mix, and finally add 3.5 parts of sodium lignin sulfonate and stir thoroughly to obtain a first nano-silica adjustment solution;

[0099] S03: adding 4 parts of bentonite to 7 parts of 10% sodium silicate solution by mass, and then adding 2 parts of urea, stirring thoroughly to obtain a second bentonite adjustment solution;

[0100] S04: The second bentonite agent regulating liquid and the first nano-silica regulating liquid are ultrasonically improved in a weight ratio of 1:2. After the ultrasonic treatment is completed, the mixture is washed with water and dried to obtain a regulating agent modified with bentonite.

[0101] The mass fraction of the yttrium nitrate solution in this embodiment is 5%; the mass fraction of the sodium citrate solution is 12.5%.

[0102] The ultrasonic power of the ultrasonic improvement treatment in this embodiment is 325W, and the ultrasonic time is 1.5h.

[0103] The preparation method of the bentonite agent of the present embodiment is:

[0104] The bentonite is first heat-treated at 375°C for 17 minutes, then cooled to 207°C at a rate of 3.5°C / min, kept warm for 7.5 minutes, and finally cooled to 55°C at a rate of 2°C / min, kept warm, and the kept warm bentonite is fully stirred in a sufficient amount of hydrochloric acid solution, and finally washed with water until neutral and dried to obtain a bentonite agent.

[0105] The mass fraction of the hydrochloric acid solution in this embodiment is 4%.

[0106] The preparation method of the nanometer agent regulating solution of this embodiment is:

[0107] S101: 5.5 parts of nano-alumina are mixed with 8 parts of 5% by mass chitosan solution;

[0108] S102: Then, 3 parts of tetrabutyl titanate, 2 parts of nano-silica sol and 3 parts of monoethanolamine were added to S101 and the mixture was ball-milled at a speed of 1250 r / min for 1.5 h. After the ball milling was completed, the mixture was washed with water and dried to obtain a nano-alumina agent;

[0109] S103: The nano-alumina agent and the lanthanum solution are mixed and stirred thoroughly in a weight ratio of 2:5 to obtain a nano-agent adjustment solution.

[0110] The lanthanum solution in this embodiment is a lanthanum chloride solution, and the mass fraction of the lanthanum chloride solution is 5.5%.

[0111] The preparation method of a degreasing agent for an aluminum alloy new energy blade battery shell of this embodiment includes the following steps:

[0112] The ethanol solvent, the regulator modified by doping bentonite, the nano-agent regulating liquid and the silane coupling agent KH560 are first stirred and mixed thoroughly, and then octylphenol polyoxyethylene ether, sodium dodecylbenzene sulfonate, sodium phosphate and sodium carboxymethyl cellulose are added thereto in sequence and stirred thoroughly to obtain an aluminum alloy new energy blade battery shell degreasing agent.

[0113] Comparative Example 1.

[0114] The difference from Example 3 is that no regulator modified by doping bentonite is added.

[0115] Comparative Example 2.

[0116] The difference from Example 3 is that the S01 step is not used in the preparation of the regulator modified by doping bentonite.

[0117] Comparative Example 3.

[0118] The difference from Example 3 is that the first nano-silica conditioning solution is not added in the preparation of the conditioning agent modified by doping bentonite.

[0119] Comparative Example 4.

[0120] The difference from Example 3 is that no yttrium nitrate solution and sodium lignin sulfonate were added in the preparation of the first nano-silica conditioning solution.

[0121] Comparative Example 5.

[0122] The difference from Example 3 is that the second bentonite agent regulating liquid is not added in the preparation of the regulating agent modified by doping bentonite.

[0123] Comparative Example 6.

[0124] The difference from Example 3 is that no bentonite is added to the second bentonite conditioning solution.

[0125] Comparative Example 7.

[0126] The difference from Example 3 is that the bentonite agent is replaced by bentonite raw material.

[0127] Comparative Example 8.

[0128] The difference from Example 3 is that the bentonite preparation method is different:

[0129] The bentonite is first heat-treated at 375°C for 17 minutes, then air-cooled to room temperature, stirred thoroughly in a sufficient amount of hydrochloric acid solution, and finally washed with water until neutral and dried to obtain the bentonite agent.

[0130] Comparative Example 9.

[0131] The difference from Example 3 is that the preparation method of the regulator modified by doping bentonite is different:

[0132] S01: adding nano-silica to a sufficient amount of 10% by mass potassium permanganate solution and stirring evenly, then transferring to a 5% by mass sodium hydroxide solution and stirring thoroughly, finally washing the nano-silica with water until neutral and drying to obtain a nano-silica agent;

[0133] S02: Add 5 parts of nano-silica agent and 2 parts of yttrium nitrate solution to 5.5 parts of sodium citrate solution and stir to mix, then add 3.5 parts of sodium lignin sulfonate, 4 parts of bentonite agent, 7 parts of 10% sodium silicate solution by mass, and 2 parts of urea, stir thoroughly, wash with water, and dry to obtain a regulator modified by doping bentonite. The other conditions are the same as those in Example 3.

[0134] Comparative Example 10.

[0135] The difference from Example 3 is that no nano-agent regulating liquid is added.

[0136] Comparative Example 11.

[0137] The difference from Example 3 is that tetrabutyl titanate and nano-silica sol are not added to the nano-agent regulating solution.

[0138] Comparative Example 12.

[0139] The difference from Example 3 is that monoethanolamine is not added to the nano-agent regulating solution, and deionized water is used instead of the chitosan solution.

[0140] Comparative Example 13.

[0141] The difference from Example 3 is that the lanthanum solution in the nano-agent regulating solution is replaced by deionized water.

[0142] The products of Examples 1 to 3 and Comparative Examples 1 to 13 were subjected to performance tests on degreasing rate and degreasing time, and the products were stored at 65° C. for 48 hours to test the high temperature stability of the products.

[0143] The test results are as follows;

[0144]

[0145]

[0146] It can be seen from Comparative Examples 1 to 13 and Examples 1 to 3 that;

[0147] The product of Example 3 can still have an excellent degreasing rate under neutral degreasing conditions, and at the same time has excellent degreasing time performance. The two can be improved in a coordinated manner, and the product can achieve a high degreasing rate and a short degreasing time. At the same time, the product has significant performance stability under high temperature conditions;

[0148] From Comparative Examples 1 to 9, Comparative Example 10 and Example 3, it can be seen that

[0149] The performance of the product showed a significant deterioration trend when neither the bentonite-modified conditioning agent nor the nano-agent conditioning liquid was added to the product. Especially under the temperature resistance condition, the performance of the product deteriorated more significantly. The synergistic effect of the two, the bentonite-modified conditioning agent and the nano-agent conditioning liquid, was the most significant.

[0150] As can be seen from Comparative Examples 2 to 5, the preparation of the doped bentonite-modified conditioning agent did not use the S01 step, did not add the first nano-silica conditioning solution, and did not add the second bentonite conditioning solution. The performance of the product has a tendency to deteriorate. At the same time, the inventors of the present invention found that the absence of the second bentonite conditioning solution has a greater impact on product performance under temperature resistance conditions, and the absence of the first nano-silica conditioning solution has a greater impact on the degreasing rate and degreasing time of the product under normal conditions. In addition, the first nano-silica conditioning solution prepared by different methods has a tendency to deteriorate.

[0151] The performance effect of the product is most significant when the first nano-silica conditioning solution prepared by the method of the present invention is combined with the second bentonite conditioning solution of the present invention;

[0152] As can be seen from Comparative Examples 6 to 9, the performance of the products in the second bentonite conditioning solution is poor, the bentonite is replaced by a bentonite raw material, and the bentonite preparation method is different. The second bentonite conditioning solution obtained by the bentonite prepared by the specific method of the present invention has the most significant performance effect.

[0153] As can be seen from Comparative Example 9, the preparation conditions of the modified regulator doped with bentonite are different, and the performance of the product also tends to deteriorate;

[0154] It can be seen from Comparative Examples 11 to 13 and Example 3 that tetrabutyl titanate, nano-silica sol, and monoethanolamine were not added to the nano-agent regulating solution, deionized water was used instead of the chitosan solution, and deionized water was used instead of the lanthanum solution in the nano-agent regulating solution. The performance of the products all tended to deteriorate. The nano-agent regulating solution prepared by the specific method of the present invention had the most significant performance effect. The technical effects of the present invention could not be achieved by using other methods.

[0155] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

[0156] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A degreasing agent for aluminum alloy new energy blade battery shell, characterized in that: It includes the following raw materials in parts by weight: 30-35 parts of ethanol solvent, 15-20 parts of octylphenol polyoxyethylene ether, 8-12 parts of sodium dodecylbenzene sulfonate, 6-10 parts of sodium phosphate, 8-12 parts of a modifier modified with bentonite, 4-7 parts of sodium carboxymethyl cellulose, 2-3 parts of silane coupling agent KH560, and 4-7 parts of a nano-agent modifier solution; The preparation method of the modified regulator doped with bentonite is as follows: S01: Add nano-silica to a sufficient amount of 10% by mass potassium permanganate solution and stir evenly, then transfer to a 5% by mass sodium hydroxide solution and stir thoroughly, finally wash the nano-silica with water until neutral and dry to obtain a nano-silica agent; S02: Add 4 to 6 parts of nano-silica agent and 1 to 3 parts of yttrium nitrate solution to 4 to 7 parts of sodium citrate solution and stir to mix, and finally add 2 to 5 parts of sodium lignin sulfonate and stir thoroughly to obtain a first nano-silica adjustment solution; S03: adding 3 to 5 parts of bentonite to 5 to 9 parts of a 10% sodium silicate solution by mass, and then adding 1 to 3 parts of urea, stirring thoroughly to obtain a second bentonite adjustment solution; S04: ultrasonically modifying the second bentonite agent conditioning solution and the first nano-silica conditioning solution in a weight ratio of 2:(3-5). After the ultrasonic treatment is completed, washing with water and drying are performed to obtain a conditioning agent modified with bentonite; The preparation method of the bentonite agent is: The bentonite is first heat-treated at 350-400°C for 15-20 minutes, then cooled to 205-210°C at a rate of 2-5°C / min, kept warm for 5-10 minutes, and finally cooled to 55°C at a rate of 1-3°C / min, kept warm, and the kept warm bentonite is fully stirred in a sufficient amount of hydrochloric acid solution, and finally washed with water until neutral and dried to obtain a bentonite agent; The preparation method of the nano agent regulating solution is: S101: 4-7 parts of nano-alumina are mixed with 6-10 parts of 5% by mass chitosan solution; S102: Then, 2-4 parts of tetrabutyl titanate, 1-3 parts of nano-silica sol and 2-4 parts of monoethanolamine are added to S101 and the mixture is ball-milled at a speed of 1000-1500 r / min for 1-2 hours. After the ball milling is completed, the mixture is washed with water and dried to obtain a nano-alumina agent; S103: The nano-alumina agent and the lanthanum solution are mixed and stirred thoroughly in a weight ratio of 2:5 to obtain a nano-agent adjustment solution.

2. The aluminum alloy new energy blade battery shell degreasing agent according to claim 1, characterized in that: The aluminum alloy new energy blade battery shell degreasing agent comprises the following raw materials in parts by weight: 32.5 parts of ethanol solvent, 17.5 parts of octylphenol polyoxyethylene ether, 10 parts of sodium dodecylbenzene sulfonate, 8 parts of sodium phosphate, 10 parts of a regulator modified by doping bentonite, 5.5 parts of sodium carboxymethyl cellulose, 2.5 parts of a silane coupling agent KH560, and 5.5 parts of a nano-agent regulating liquid.

3. The aluminum alloy new energy blade battery shell degreasing agent according to claim 1, characterized in that: The mass fraction of the yttrium nitrate solution is 4-6%; the mass fraction of the sodium citrate solution is 10-15%.

4. The aluminum alloy new energy blade battery shell degreasing agent according to claim 1, characterized in that: The ultrasonic improvement treatment has an ultrasonic power of 300-350W and an ultrasonic time of 1-2h.

5. The aluminum alloy new energy blade battery shell degreasing agent according to claim 1, characterized in that: The mass fraction of the hydrochloric acid solution is 3-5%.

6. The aluminum alloy new energy blade battery shell degreasing agent according to claim 1, characterized in that: The lanthanum solution is a lanthanum chloride solution, and the mass fraction of the lanthanum chloride solution is 4-7%.

7. A method for preparing the aluminum alloy new energy blade battery shell degreasing agent according to any one of claims 1 to 6, characterized in that: The following steps are involved: The ethanol solvent, the regulator modified by doping bentonite, the nano-agent regulating liquid and the silane coupling agent KH560 are first stirred and mixed thoroughly, and then octylphenol polyoxyethylene ether, sodium dodecylbenzene sulfonate, sodium phosphate and sodium carboxymethyl cellulose are added thereto in sequence and stirred thoroughly to obtain an aluminum alloy new energy blade battery shell degreasing agent.

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