CN117343610B - Insulating paint for new energy battery and preparation method thereof - Google Patents
Insulating paint for new energy battery and preparation method thereof Download PDFInfo
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- CN117343610B CN117343610B CN202311639880.2A CN202311639880A CN117343610B CN 117343610 B CN117343610 B CN 117343610B CN 202311639880 A CN202311639880 A CN 202311639880A CN 117343610 B CN117343610 B CN 117343610B
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- 239000003973 paint Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- YJCJVMMDTBEITC-UHFFFAOYSA-N 10-hydroxycapric acid Chemical compound OCCCCCCCCCC(O)=O YJCJVMMDTBEITC-UHFFFAOYSA-N 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims abstract description 35
- 238000000576 coating method Methods 0.000 claims abstract description 31
- 239000011248 coating agent Substances 0.000 claims abstract description 27
- 239000003822 epoxy resin Substances 0.000 claims abstract description 17
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 239000002270 dispersing agent Substances 0.000 claims abstract description 13
- 239000000945 filler Substances 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 16
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 15
- 241000345998 Calamus manan Species 0.000 claims description 14
- 235000012950 rattan cane Nutrition 0.000 claims description 14
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 13
- 235000010413 sodium alginate Nutrition 0.000 claims description 13
- 239000000661 sodium alginate Substances 0.000 claims description 13
- 229940005550 sodium alginate Drugs 0.000 claims description 13
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims description 10
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical group CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 5
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 19
- 238000009413 insulation Methods 0.000 description 9
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical group [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009718 spray deposition Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Cell Separators (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the field of coatings, in particular to an insulating coating for a new energy battery and a preparation method thereof. The invention discloses an insulating paint for a new energy battery, which comprises the following raw materials in parts by weight: 60-70 parts of epoxy resin, 6-8 parts of modified layered double hydroxide, 1-3 parts of 10-hydroxydecanoic acid, 0.5-1 part of accelerator, 0.3-0.5 part of dispersing agent, 1-2 parts of flatting agent and 5-10 parts of filler. The modified layered double hydroxide and 10-hydroxydecanoic acid added into the coating provided by the invention have synergistic effect with epoxy resin, so that the coating formed by the coating has better insulativity, and higher safety and stability. The coating formed by the coating also has good fluidity and adhesive force, avoids the influence of the overhigh temperature of the battery in the working process, and has good application prospect. The invention also provides a preparation method of the new energy battery insulating paint, which has the advantages of simple and convenient process, easy operation and convenient industrialized production.
Description
Technical Field
The invention relates to the field of coatings, in particular to an insulating coating for a new energy battery and a preparation method thereof.
Background
In order to improve the cruising ability of a new energy automobile, most of the batteries are designed into a tetragonal structure, then a plurality of batteries are connected in series and are closely arranged to be bound into a battery pack, so that the cruising ability of the automobile is improved, and meanwhile, the space is saved. Because the distance between adjacent batteries is small, and the automobile is easy to generate heat and has high temperature in the running process, insulation treatment is needed between the batteries.
In the past, the battery generally uses insulating paper as insulation protection, but the insulating paper and a battery shell cannot be tightly attached, so that the insulating effect of the insulating paper is difficult to fully develop, partial discharge problem can be caused, loss is caused to the battery pack, the service life of the battery pack is reduced, the use safety of the battery pack can be influenced, and the safety of a new energy automobile during running is difficult to ensure. At present, a method of spraying paint is commonly used for insulating a battery pack in the market. The insulating powder coating is applied to the power battery pack of the new energy automobile, well replaces insulating paper, is simple in construction, and is convenient to install and transport by one-time spray forming.
With the development of technology, the requirements on the battery endurance mileage are longer and longer, and more battery packs are connected in series, so that the high-voltage-resistant insulating performance requirement standard of the insulating powder coating is further improved. After the new energy automobile runs for a long time, the service life of the battery pack can be seriously influenced when the battery pack is in a high-temperature environment, and even safety accidents such as battery ignition and the like can be caused. Therefore, there is a higher demand for insulation of the paint between the battery packs. How to improve the insulation of the new energy battery coating is a technical problem which needs to be solved by the technicians in the field.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the purposes of the invention is to provide an insulating coating for a new energy battery, which has better insulativity and heat dissipation, good safety and prolonged service life of the battery.
The second purpose of the invention is to provide a preparation method of the new energy battery insulating paint.
One of the purposes of the invention is realized by adopting the following technical scheme:
an insulating paint for a new energy battery comprises the following raw materials in parts by weight: 60-70 parts of epoxy resin, 6-8 parts of modified layered double hydroxide, 1-3 parts of 10-hydroxydecanoic acid, 0.5-1 part of accelerator, 0.3-0.5 part of dispersing agent, 1-2 parts of flatting agent and 5-10 parts of filler.
Specifically, the preparation process of the modified layered double hydroxide is as follows:
(a) Dissolving sodium hydroxide, sodium carbonate and sodium alginate in deionized water, performing ultrasonic dispersion and mixing uniformly, adding nickel nitrate, aluminum nitrate and nano rattan bark powder, and continuing ultrasonic mixing uniformly;
(b) Transferring the mixed solution obtained in the step (a) into a hydrothermal synthesis device, carrying out hydrothermal reaction under the protection of nitrogen, filtering after the reaction is finished, collecting a product, washing the product, and drying to obtain the modified layered double hydroxide.
Preferably, the components in the step (a) are used in the following parts by weight: 40-50 parts of sodium hydroxide, 20-30 parts of sodium carbonate, 4-8 parts of sodium alginate, 5-10 parts of nano rattan bark powder, 10-15 parts of nickel nitrate, 10-15 parts of aluminum nitrate and 1000-1500 parts of deionized water.
Further, the hydrothermal reaction temperature in the step (b) is 110-120 ℃ and the reaction time is 20-30h.
Further, the particle size of the nano rattan bark powder in the step (a) is 80-100nm.
Further, the epoxy resin is bisphenol a type epoxy resin.
Further, the accelerator is 2-methylimidazole; the dispersing agent is BYK110; the leveling agent is GLP588 leveling agent; the filler is silica micropowder.
The second purpose of the invention is realized by adopting the following technical scheme:
the preparation method of the insulating paint for the new energy battery comprises the following steps: uniformly mixing epoxy resin, modified layered double hydroxide, 10-hydroxydecanoic acid, an accelerator, a dispersing agent, a leveling agent and a filler, extruding by a double screw extruder, cooling, crushing, and sieving by a 180-200 mesh sieve to obtain the insulating coating.
Preferably, the extrusion temperature of the twin-screw extruder is 110-120 ℃.
Compared with the prior art, the invention has the beneficial effects that: the invention provides an insulating coating for a new energy battery, and the added modified layered double hydroxide, 10-hydroxydecanoic acid and epoxy resin are synergistic, so that the coating formed by the coating has better insulativity and higher safety and stability. The coating formed by the coating also has good fluidity and adhesive force, avoids the influence of the overhigh temperature of the battery in the working process, and has good application prospect.
The invention also provides a preparation method of the new energy battery insulating paint, which has the advantages of simple and convenient process, easy operation and convenient industrialized production.
Detailed Description
The present invention will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.
Example 1
The insulating paint for the new energy battery consists of the following raw materials in parts by weight: 60 parts of bisphenol A type epoxy resin, 6 parts of modified layered double hydroxide, 1 part of 10-hydroxydecanoic acid, 0.5 part of 2-methylimidazole, 0.3 part of dispersant BYK110, 1 part of GLP588 flatting agent and 5 parts of silicon micropowder.
The preparation process of the modified layered double hydroxide is as follows:
(a) Dissolving sodium hydroxide, sodium carbonate and sodium alginate in deionized water, performing ultrasonic dispersion and mixing uniformly, adding nickel nitrate, aluminum nitrate and nano rattan bark powder with the particle size of 80-100nm, and continuing ultrasonic mixing uniformly; the weight parts of the components are as follows: 40 parts of sodium hydroxide, 20 parts of sodium carbonate, 4 parts of sodium alginate, 5 parts of nano rattan bark powder, 10 parts of nickel nitrate, 10 parts of aluminum nitrate and 1000 parts of deionized water;
(b) Transferring the mixed solution obtained in the step (a) into a hydrothermal synthesis device, carrying out hydrothermal reaction under the protection of nitrogen, wherein the hydrothermal reaction temperature is 110 ℃, the reaction time is 30 hours, filtering after the reaction is finished, collecting a product, washing the product, and drying to obtain the modified layered double hydroxide.
The preparation method of the insulating paint for the new energy battery comprises the following steps: uniformly mixing epoxy resin, modified layered double hydroxide, 10-hydroxydecanoic acid, 2-methylimidazole, a dispersing agent BYK110, a GLP588 flatting agent and a filler, extruding by a double screw extruder at the extrusion temperature of 110 ℃, cooling, crushing, and sieving by a 180-mesh sieve to obtain the insulating coating.
Example 2
The insulating paint for the new energy battery consists of the following raw materials in parts by weight: 65 parts of bisphenol A type epoxy resin, 7 parts of modified layered double hydroxide, 2 parts of 10-hydroxydecanoic acid, 0.8 part of 2-methylimidazole, 0.4 part of dispersant BYK110, 1 part of GLP588 flatting agent and 8 parts of silicon micropowder.
The preparation process of the modified layered double hydroxide is as follows:
(a) Dissolving sodium hydroxide, sodium carbonate and sodium alginate in deionized water, performing ultrasonic dispersion and mixing uniformly, adding nickel nitrate, aluminum nitrate and nano rattan bark powder with the particle size of 80-100nm, and continuing ultrasonic mixing uniformly; the weight parts of the components are as follows: 45 parts of sodium hydroxide, 25 parts of sodium carbonate, 5 parts of sodium alginate, 8 parts of nano rattan bark powder, 13 parts of nickel nitrate, 12 parts of aluminum nitrate and 1200 parts of deionized water;
(b) Transferring the mixed solution obtained in the step (a) into a hydrothermal synthesis device, carrying out hydrothermal reaction under the protection of nitrogen, wherein the hydrothermal reaction temperature is 115 ℃, the reaction time is 25 hours, filtering after the reaction is finished, collecting a product, washing the product, and drying to obtain the modified layered double hydroxide.
The preparation method of the insulating paint for the new energy battery comprises the following steps: uniformly mixing epoxy resin, modified layered double hydroxide, 10-hydroxydecanoic acid, 2-methylimidazole, a dispersing agent BYK110, a GLP588 flatting agent and a filler, extruding by a double screw extruder at the extrusion temperature of 115 ℃, cooling, crushing, and sieving by a 190-mesh sieve to obtain the insulating coating.
Example 3
The insulating paint for the new energy battery consists of the following raw materials in parts by weight: 70 parts of bisphenol A type epoxy resin, 8 parts of modified layered double hydroxide, 3 parts of 10-hydroxydecanoic acid, 1 part of 2-methylimidazole, 0.5 part of dispersant BYK110, 2 parts of GLP588 flatting agent and 10 parts of silicon micropowder.
The preparation process of the modified layered double hydroxide is as follows:
(a) Dissolving sodium hydroxide, sodium carbonate and sodium alginate in deionized water, performing ultrasonic dispersion and mixing uniformly, adding nickel nitrate, aluminum nitrate and nano rattan bark powder with the particle size of 80-100nm, and continuing ultrasonic mixing uniformly; the weight parts of the components are as follows: 50 parts of sodium hydroxide, 30 parts of sodium carbonate, 8 parts of sodium alginate, 10 parts of nano rattan bark powder, 15 parts of nickel nitrate, 15 parts of aluminum nitrate and 1500 parts of deionized water;
(b) Transferring the mixed solution obtained in the step (a) into a hydrothermal synthesis device, carrying out hydrothermal reaction under the protection of nitrogen, wherein the hydrothermal reaction temperature is 120 ℃, the reaction time is 20 hours, filtering after the reaction is finished, collecting a product, washing the product, and drying to obtain the modified layered double hydroxide.
The preparation method of the insulating paint for the new energy battery comprises the following steps: uniformly mixing epoxy resin, modified layered double hydroxide, 10-hydroxydecanoic acid, 2-methylimidazole, a dispersing agent BYK110, a GLP588 flatting agent and a filler, extruding by a double screw extruder at 120 ℃, cooling and crushing, and sieving by a 200-mesh sieve to obtain the insulating coating.
Comparative example 1
Comparative example 1 provides an insulating paint for a new energy battery and a method for preparing the same, which is different from example 1 in that: the procedure of example 1 was repeated except that the modified layered double hydroxide was not added.
Comparative example 2
Comparative example 2 provides an insulating paint for a new energy battery and a preparation method thereof, which is different from example 1 in that: the modified layered double hydroxide was prepared without adding nano rattan bark powder, and the other steps were the same as in example 1.
Comparative example 3
Comparative example 3 provides an insulating paint for a new energy battery and a method for preparing the same, which is different from example 1 in that: sodium alginate is not added in the preparation process of the modified layered double hydroxide, and all the other steps are the same as in example 1.
Comparative example 4
Comparative example 4 provides an insulating paint for a new energy battery and a method for preparing the same, which is different from example 1 in that: sodium alginate and nano rattan bark powder are not added in the preparation process of the modified layered double hydroxide, the layered double hydroxide is prepared, and the sodium alginate, the nano rattan bark powder and the layered double hydroxide are directly used as coating raw materials, and the other materials are the same as those in the example 1.
Comparative example 5
Comparative example 5 provides an insulating paint for a new energy battery and a method for preparing the same, which is different from example 1 in that: 10-hydroxydecanoic acid was not added, and the same procedure as in example 1 was followed.
Comparative example 6
Comparative example 6 provides an insulating paint for a new energy battery and a method for preparing the same, which is different from example 1 in that: the amount of the modified layered double hydroxide was adjusted to 7 parts without adding 10-hydroxydecanoic acid, and the same procedure was followed as in example 1.
Comparative example 7
Comparative example 7 provides an insulating paint for a new energy battery and a preparation method thereof, which is different from example 1 in that: the amount of 10-hydroxydecanoic acid was adjusted to 7 parts without adding the modified layered double hydroxide, and the same procedure as in example 1 was repeated.
Test examples
The following properties of the coatings prepared in comparative examples 1 to 7 were examined for examples 1 to 3: the results of insulation effect (detection of breakdown voltage GB/T1408.1-2016), stability (application of the paints of examples 1 to 3, comparative examples 1 to 7 to battery cases, irradiation of ultraviolet rays at 37℃for 3d after molding, and detection of breakdown voltage with reference to GB/T1408.1-2016), adhesion (GB/T9286-1998), fluidity (GB/T21782.5-2010) are shown in Table 1.
TABLE 1
As shown in table 1, the coatings in examples 1 to 3 were superior to comparative examples 1 to 7 in insulation, stability, adhesion, and fluidity. In comparative examples 1 to 4, the modified layered double hydroxide was omitted or the preparation process of the modified layered double hydroxide was adjusted, and the insulation and stability of the coating were remarkably reduced, and in comparative examples 5 to 7, the 10-hydroxydecanoic acid was omitted or the compounding relationship of the 10-hydroxydecanoic acid and the modified layered double hydroxide was adjusted, respectively, and the resulting coating was inferior to example 1 in both insulation and stability. From the above, the paint of the invention improves the compactness of the coating film by adding the modified layered double hydroxide and the 10-hydroxydecanoic acid, improves the intersection point density of the coating film and further improves the insulation effect of the coating film.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.
Claims (5)
1. The insulating paint for the new energy battery is characterized by comprising the following raw materials in parts by weight: 60-70 parts of epoxy resin, 6-8 parts of modified layered double hydroxide, 1-3 parts of 10-hydroxydecanoic acid, 0.5-1 part of accelerator, 0.3-0.5 part of dispersing agent, 1-2 parts of flatting agent and 5-10 parts of filler;
the preparation process of the modified layered double hydroxide comprises the following steps:
(a) Dissolving sodium hydroxide, sodium carbonate and sodium alginate in deionized water, performing ultrasonic dispersion and mixing uniformly, adding nickel nitrate, aluminum nitrate and nano rattan bark powder with the particle size of 80-100nm, and continuing ultrasonic mixing uniformly; the weight parts of the components are as follows: 40-50 parts of sodium hydroxide, 20-30 parts of sodium carbonate, 4-8 parts of sodium alginate, 5-10 parts of nano rattan bark powder, 10-15 parts of nickel nitrate, 10-15 parts of aluminum nitrate and 1000-1500 parts of deionized water;
(b) Transferring the mixed solution obtained in the step (a) into a hydrothermal synthesis device, carrying out hydrothermal reaction under the protection of nitrogen, wherein the hydrothermal reaction temperature is 110-120 ℃, the reaction time is 20-30h, filtering after the reaction is finished, collecting a product, washing the product, and drying to obtain the modified layered double hydroxide.
2. The insulating paint for a new energy battery according to claim 1, wherein the epoxy resin is bisphenol a type epoxy resin.
3. The insulating paint for a new energy battery according to claim 1, wherein the accelerator is 2-methylimidazole; the dispersing agent is BYK110; the leveling agent is GLP588 leveling agent; the filler is silica micropowder.
4. A method for preparing an insulating paint for a new energy battery according to any one of claims 1 to 3, comprising the steps of: uniformly mixing epoxy resin, modified layered double hydroxide, 10-hydroxydecanoic acid, an accelerator, a dispersing agent, a leveling agent and a filler, extruding by a double screw extruder, cooling, crushing, and sieving by a 180-200 mesh sieve to obtain the insulating coating.
5. The method for producing an insulating paint for a new energy battery according to claim 4, wherein the extrusion temperature of the twin-screw extruder is 110 to 120 ℃.
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| CN202311639880.2A CN117343610B (en) | 2023-12-04 | 2023-12-04 | Insulating paint for new energy battery and preparation method thereof |
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| CN202311639880.2A CN117343610B (en) | 2023-12-04 | 2023-12-04 | Insulating paint for new energy battery and preparation method thereof |
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| CN117343610B true CN117343610B (en) | 2024-04-02 |
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| US5492955A (en) * | 1993-11-05 | 1996-02-20 | Bayer Aktiengesellschaft | Powder coating compositions and their use for coating heat resistant substrates |
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