CN117887013A - Polyphenyl ether composite resin of dimensionally stable battery pack structural member and preparation method thereof - Google Patents
Polyphenyl ether composite resin of dimensionally stable battery pack structural member and preparation method thereof Download PDFInfo
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- CN117887013A CN117887013A CN202410047231.1A CN202410047231A CN117887013A CN 117887013 A CN117887013 A CN 117887013A CN 202410047231 A CN202410047231 A CN 202410047231A CN 117887013 A CN117887013 A CN 117887013A
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- composite resin
- fluorine
- ppo
- battery pack
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- 229920013636 polyphenyl ether polymer Polymers 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000000805 composite resin Substances 0.000 title claims abstract description 13
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 19
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 18
- 239000011737 fluorine Substances 0.000 claims abstract description 18
- 229920002748 Basalt fiber Polymers 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 8
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000007731 hot pressing Methods 0.000 claims abstract description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 29
- 229920006380 polyphenylene oxide Polymers 0.000 claims description 29
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- -1 hexafluoroisopropyl Chemical group 0.000 claims description 11
- 239000000243 solution Substances 0.000 claims description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- XKZQKPRCPNGNFR-UHFFFAOYSA-N 2-(3-hydroxyphenyl)phenol Chemical compound OC1=CC=CC(C=2C(=CC=CC=2)O)=C1 XKZQKPRCPNGNFR-UHFFFAOYSA-N 0.000 claims description 5
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 claims description 5
- IRQWEODKXLDORP-UHFFFAOYSA-N 4-ethenylbenzoic acid Chemical compound OC(=O)C1=CC=C(C=C)C=C1 IRQWEODKXLDORP-UHFFFAOYSA-N 0.000 claims description 5
- QOSSAOTZNIDXMA-UHFFFAOYSA-N Dicylcohexylcarbodiimide Chemical compound C1CCCCC1N=C=NC1CCCCC1 QOSSAOTZNIDXMA-UHFFFAOYSA-N 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 17
- 239000002131 composite material Substances 0.000 abstract description 5
- 239000011347 resin Substances 0.000 abstract description 5
- 229920005989 resin Polymers 0.000 abstract description 5
- 238000004132 cross linking Methods 0.000 abstract description 3
- 238000006116 polymerization reaction Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 7
- 230000009477 glass transition Effects 0.000 description 5
- 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 4
- 239000004342 Benzoyl peroxide Substances 0.000 description 3
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 235000019400 benzoyl peroxide Nutrition 0.000 description 3
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 description 3
- 125000001153 fluoro group Chemical group F* 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000004971 Cross linker Substances 0.000 description 2
- 229920001955 polyphenylene ether Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- XPNGNIFUDRPBFJ-UHFFFAOYSA-N (2-methylphenyl)methanol Chemical compound CC1=CC=CC=C1CO XPNGNIFUDRPBFJ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/062—Polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
- C08G65/48—Polymers modified by chemical after-treatment
- C08G65/485—Polyphenylene oxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/10—Silicon-containing compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/229—Composite material consisting of a mixture of organic and inorganic materials
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Engineering & Computer Science (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to the technical field of composite materials, and particularly relates to a polyphenyl ether composite resin of a battery pack structural member with stable size and a preparation method thereof; the method comprises the following steps: uniformly mixing vinyl-terminated low molecular weight PPO, a fluorine-containing cross-linking agent containing double bonds and basalt fibers, and preparing thermosetting cross-linked PPO composite resin by adopting a hot-pressing method; the vinyl-terminated low molecular weight PPO comprises the following components in parts by weight: fluorine-containing crosslinking agent containing double bond: basalt fiber=10:15:1; the curing pressure is 5MPa, the curing temperature is 200 ℃, and the curing time is 6 hours. The fluorine-containing polyphenyl ether prepared by the crosslinking curing mode can improve the polymerization dimensional stability and realize low dielectric property. The heat conducting property of the composite material is further improved by introducing basalt fibers into the resin. The excellent combination of properties of this material is excellent in the competitiveness of the battery pack structure.
Description
Technical Field
The invention relates to the field of composite materials, in particular to a polyphenyl ether composite resin of a dimensionally stable battery pack structural member and a preparation method thereof.
Background
Among various materials, polyphenylene oxide (PPO) is a resin excellent in combination properties. Has the advantages of high heat resistance, high glass transition temperature, low water absorption and the like. Particularly over a wide frequency range, PPO has extremely low dielectric constants and dielectric losses, which makes it an excellent candidate for electrical or electronic equipment, vehicle parts, commercial machines, adhesives, coatings, and composites. Along with the development of new energy automobiles, the PPO resin is also widely applied to the preparation of new energy automobile battery protective shells. Because the main power of the new energy automobile is derived from the battery, the battery can generate heat in the charging and discharging processes. If the heat generated by the battery cannot be transferred in time, the service life of the battery and the use safety of the vehicle cannot be guaranteed. However, currently, there is little research on the thermal conductivity of new energy automobile battery protective case preparations. In addition, polyphenylene ether materials that provide good heat conducting properties while satisfying dimensional stability and low dielectric properties have been lacking in corresponding studies.
Disclosure of Invention
In view of the above, in order to realize that the current polyphenyl ether material is used for a battery protective shell and simultaneously meet the requirements of stable size, low dielectric and good heat conduction, the invention provides a polyphenyl ether composite resin of a battery pack structural member with stable size and a preparation method thereof.
The invention aims to solve the technical problems, and is realized by the following technical scheme:
1. preparation of fluorine-containing crosslinkers containing double bonds
KOH and 4,4' - (hexafluoroisopropyl) diphenol were added to the ethanol solution under nitrogen atmosphere, and after stirring was continued for 5h under heating, p-benzyl bromostyrene was added and stirring was continued for 12h. After cooling to room temperature, filtering to remove potassium bromide, and drying in vacuum to obtain the fluorine-containing cross-linking agent containing double bonds.
Preferably, KOH is 20 parts, 4' - (hexafluoroisopropyl) diphenol is 100 parts, and p-benzyl bromostyrene is 200 parts; further, KOH:4,4' - (hexafluoroisopropyl) diphenol: p-benzyl bromostyrene=2:5:10. The heating temperature is preferably 80 ℃.
2. Preparation of low molecular weight PPO
In a device with condensing reflux, a polyphenyl ether raw material, bisphenol A, dodecyl mercaptan and a proper amount of toluene-methanol mixed solution (toluene: methanol=3:1) are added, and after being stirred uniformly at 80 ℃, benzoyl peroxide is slowly added for continuous reaction for 6 hours. After the end, the solution temperature was lowered to room temperature, and excess methanol was added thereto to precipitate the product. The mixture is filtered by suction, and the solid is washed three times with methanol to obtain low molecular weight PPO.
Preferably, the polyphenyl ether raw material is 100 parts, bisphenol A is 20 parts, dodecyl mercaptan is 5 parts, and benzoyl peroxide is 10 parts
Further preferably, the polyphenylene ether: bisphenol a: dodecyl mercaptan: benzoyl peroxide=20:5:1:2.
3. Preparation of vinyl terminated low molecular weight PPO
Uniformly mixing 4-vinylbenzoic acid, 4- (dimethylamino) pyridine and dicyclohexylcarbodiimide in a proper amount of dichloromethane solution, slowly adding low-molecular-weight PPO into the mixed solution, and continuously stirring for 6 hours. After the reaction was completed, impurities were removed by filtration, and the solution was poured into methanol to precipitate a product.
Preferably, the 4-vinyl benzoic acid is 75 parts, the 4- (dimethylamino) pyridine is 15 parts, the dicyclohexylcarbodiimide is 30 parts, and the low molecular weight PPO is 210 parts. Further preferably, 4-vinylbenzoic acid: 4- (dimethylamino) pyridine: dicyclohexylcarbodiimide: low molecular weight ppo=5:1:2:14.
4. Preparation of thermoset crosslinked PPO
The thermosetting cross-linked PPO is prepared by adopting a hot pressing method. More specifically, vinyl-terminated low molecular weight PPO, a fluorine-containing crosslinking agent having a double bond, and basalt fiber are uniformly mixed, and the mixture is poured into a preheated mold and cured at 150 to 200 ℃ for 4 to 8 hours under a pressure of 1 to 5 MPa.
Preferably, the vinyl-terminated low molecular weight PPO is 100 parts, the fluorine-containing crosslinking agent containing double bonds is 150 parts, and the basalt fiber is 10 parts. Further preferred, vinyl terminated low molecular weight PPO: fluorine-containing crosslinking agent containing double bond: basalt fiber=10:15:1.
Preferably, the curing pressure is 5MPa, the curing temperature is 200 ℃, and the curing time is 6h.
The beneficial effects of the invention are as follows:
(1) The fluorine-containing polyphenyl ether prepared by the crosslinking curing mode can improve the polymerization dimensional stability and realize low dielectric property.
(2) The heat conducting property of the composite material is further improved by introducing basalt fibers into the resin. The excellent combination of properties of this material is excellent in the competitiveness of the battery pack structure.
Detailed Description
The following describes the technical scheme of the present invention in detail, but the scope of the present invention is not limited to the following description.
Example 1
100 parts of vinyl-terminated low molecular weight PPO, 50 parts of a fluorine-containing crosslinking agent having a double bond and 10 parts of basalt fiber were uniformly mixed, and the mixture was poured into a preheated mold and cured at 200 ℃ for 6 hours under a pressure of 2 MPa.
Example 2
100 parts of vinyl-terminated low molecular weight PPO, 100 parts of fluorine-containing crosslinking agent having double bonds and 10 parts of basalt fiber were uniformly mixed, and the mixture was poured into a preheated mold and cured at 200 ℃ for 6 hours under a pressure of 2 MPa.
Example 3
100 parts of vinyl-terminated low molecular weight PPO, 150 parts of a fluorine-containing crosslinking agent having double bonds and 10 parts of basalt fiber were uniformly mixed, and the mixture was poured into a preheated mold and cured at 200 ℃ for 6 hours under a pressure of 2 MPa.
Example 4
100 parts of vinyl-terminated low molecular weight PPO, 100 parts of fluorine-containing crosslinking agent having double bonds and 10 parts of basalt fiber were uniformly mixed, and the mixture was poured into a preheated mold and cured at 150 ℃ for 6 hours under a pressure of 2 MPa.
Example 5
100 parts of vinyl-terminated low molecular weight PPO, 100 parts of fluorine-containing crosslinking agent having double bonds and 10 parts of basalt fiber were uniformly mixed, and the mixture was poured into a preheated mold and cured at 180 ℃ for 6 hours under a pressure of 2 MPa.
Table 1 thermo-mechanical properties, coefficient of thermal expansion, dielectric properties of samples
The thermal stability of the material was characterized by DSC and TGA. From the DSC results, it can be seen that the glass transition temperature of the material gradually increases as the content of the crosslinking agent increases. Mainly because of the increase of the cross-linking agent, the cross-linking density between double bonds is improved, and the movement of chain segments is effectively limited. When the curing temperature is changed, the glass transition temperature increases with increasing temperature, since the cross-link density of the cured material varies at different temperatures, and thus the glass transition temperature varies. The higher the curing temperature, the higher the crosslink density and the higher the glass transition temperature. From the TGA results, it can be seen that as the crosslinker content and curing temperature increase, the 5% weight loss temperature of the material increases with it, exhibiting good thermal stability.
The dimensional stability of the material is considered a critical parameter for the structural components of the battery. The dimensional stability of the cured material was evaluated by measuring the expansion coefficient using TMA. The cross-linked PPO exhibits more stable properties than PPO, and the stability of the material increases with increasing cross-link density. At high temperatures the material shows lower deformation, which results correspond to DSC characterization results. Such performance is critical to the reliability and lifetime of the PCB substrate to ensure electronics.
In practical applications, dielectric properties and dimensional stability sometimes conflict with each other. Therefore, fluorine atoms are introduced into the cross-linking agent structure, so that the dielectric constant of the material can be effectively reduced. From the comparison of the dielectric constants, it can be seen that the dielectric constant of the material decreases with increasing fluorine atom content. This is because fluorine atoms can effectively reduce the polarizability per unit volume of the material, thereby reducing the dielectric constant.
Through testing, the thermal conductivity of the thermosetting crosslinked polyphenyl ether composite resin prepared in the embodiment 3 is 2.49W/(m.K), the thermal conductivity of the pure PPO is 0.28W/(m.K), and the comparison shows that the resin material also has better thermal conductivity based on the good thermal conductivity of basalt fibers after the basalt fibers are added.
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (4)
1. The preparation method of the polyphenyl ether composite resin of the dimensionally stable battery pack structural member is characterized by comprising the following steps of:
uniformly mixing vinyl-terminated low molecular weight PPO, a fluorine-containing cross-linking agent containing double bonds and basalt fibers, and preparing thermosetting cross-linked PPO composite resin by adopting a hot-pressing method;
the vinyl-terminated low molecular weight PPO comprises the following components in parts by weight: fluorine-containing crosslinking agent containing double bond: basalt fiber=10:15:1; the curing pressure is 5MPa, the curing temperature is 200 ℃, and the curing time is 6 hours.
2. The method for preparing the polyphenyl ether composite resin of the dimensional stable battery pack structural member, which is characterized in that the preparation process of the vinyl terminated low molecular weight PPO is as follows:
uniformly mixing 4-vinylbenzoic acid, 4- (dimethylamino) pyridine and dicyclohexylcarbodiimide in a proper amount of dichloromethane solution, slowly adding low-molecular-weight PPO into the mixed solution, continuously stirring for 6 hours, filtering to remove impurities after the reaction is finished, and pouring the solution into methanol to precipitate a product;
the 4-vinyl benzoic acid comprises the following components in parts by mass: 4- (dimethylamino) pyridine: dicyclohexylcarbodiimide: low molecular weight ppo=5:1:2:14.
3. The method for preparing the polyphenyl ether composite resin of the dimensional stable battery pack structural member, which is characterized in that the preparation process of the fluorine-containing cross-linking agent containing double bonds is as follows:
adding KOH and 4,4' - (hexafluoroisopropyl) diphenol into an ethanol solution under the nitrogen atmosphere, continuously stirring for 5 hours under the heating condition, adding p-benzyl bromostyrene, continuously stirring for 12 hours, cooling to room temperature, filtering to remove potassium bromide, and drying in vacuum to obtain a fluorine-containing cross-linking agent containing double bonds;
the reaction comprises the following steps of: 4,4' - (hexafluoroisopropyl) diphenol: p-benzyl bromostyrene=2:5:10, heating temperature was 80 ℃.
4. A polyphenylene oxide composite resin of a dimensionally stable battery pack structural member, which is characterized in that the polyphenylene oxide composite resin is prepared by the method of any one of claims 1 to 3 and is used for a battery protection case of a new energy automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410047231.1A CN117887013A (en) | 2024-01-12 | 2024-01-12 | Polyphenyl ether composite resin of dimensionally stable battery pack structural member and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410047231.1A CN117887013A (en) | 2024-01-12 | 2024-01-12 | Polyphenyl ether composite resin of dimensionally stable battery pack structural member and preparation method thereof |
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| CN117887013A true CN117887013A (en) | 2024-04-16 |
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| CN202410047231.1A Pending CN117887013A (en) | 2024-01-12 | 2024-01-12 | Polyphenyl ether composite resin of dimensionally stable battery pack structural member and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118725538A (en) * | 2024-09-02 | 2024-10-01 | 河北省科学院能源研究所 | Low-dielectric heat-conducting polyphenyl ether composite material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118725538A (en) * | 2024-09-02 | 2024-10-01 | 河北省科学院能源研究所 | Low-dielectric heat-conducting polyphenyl ether composite material and preparation method thereof |
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