CN114316833A - High-voltage-resistant insulating sodium-ion battery adhesive tape - Google Patents
High-voltage-resistant insulating sodium-ion battery adhesive tape Download PDFInfo
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- CN114316833A CN114316833A CN202210032099.8A CN202210032099A CN114316833A CN 114316833 A CN114316833 A CN 114316833A CN 202210032099 A CN202210032099 A CN 202210032099A CN 114316833 A CN114316833 A CN 114316833A
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- bentonite
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- insulating
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- 239000002390 adhesive tape Substances 0.000 title claims abstract description 33
- 229910001415 sodium ion Inorganic materials 0.000 title claims abstract description 28
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 title claims abstract description 23
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000007788 liquid Substances 0.000 claims abstract description 66
- 239000000440 bentonite Substances 0.000 claims abstract description 61
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 61
- 239000000843 powder Substances 0.000 claims abstract description 41
- 239000003607 modifier Substances 0.000 claims abstract description 30
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 28
- 239000010432 diamond Substances 0.000 claims abstract description 28
- 238000004132 cross linking Methods 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 239000012790 adhesive layer Substances 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 239000012948 isocyanate Substances 0.000 claims abstract description 11
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 11
- 239000004840 adhesive resin Substances 0.000 claims abstract description 10
- 229920006223 adhesive resin Polymers 0.000 claims abstract description 10
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000004698 Polyethylene Substances 0.000 claims abstract description 9
- 238000009413 insulation Methods 0.000 claims abstract description 9
- -1 polyethylene Polymers 0.000 claims abstract description 9
- 229920000573 polyethylene Polymers 0.000 claims abstract description 9
- 238000000227 grinding Methods 0.000 claims description 28
- 238000006243 chemical reaction Methods 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 20
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 18
- 229920002866 paraformaldehyde Polymers 0.000 claims description 18
- 238000002360 preparation method Methods 0.000 claims description 16
- 239000000706 filtrate Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 15
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- 230000036632 reaction speed Effects 0.000 claims description 10
- 239000002585 base Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- UYUXSRADSPPKRZ-UHFFFAOYSA-N D-glucuronic acid gamma-lactone Natural products O=CC(O)C1OC(=O)C(O)C1O UYUXSRADSPPKRZ-UHFFFAOYSA-N 0.000 claims description 8
- UYUXSRADSPPKRZ-SKNVOMKLSA-N D-glucurono-6,3-lactone Chemical compound O=C[C@H](O)[C@H]1OC(=O)[C@@H](O)[C@H]1O UYUXSRADSPPKRZ-SKNVOMKLSA-N 0.000 claims description 8
- 229950002441 glucurolactone Drugs 0.000 claims description 8
- 229920000193 polymethacrylate Polymers 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims description 6
- 229910021536 Zeolite Inorganic materials 0.000 claims description 6
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 6
- 229920005990 polystyrene resin Polymers 0.000 claims description 6
- 239000010457 zeolite Substances 0.000 claims description 6
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 claims description 5
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 claims description 5
- 125000003504 2-oxazolinyl group Chemical group O1C(=NCC1)* 0.000 claims description 5
- 229920000877 Melamine resin Polymers 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 5
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 5
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 5
- 238000002715 modification method Methods 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 5
- 238000004537 pulping Methods 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 5
- KUCOHFSKRZZVRO-UHFFFAOYSA-N terephthalaldehyde Chemical compound O=CC1=CC=C(C=O)C=C1 KUCOHFSKRZZVRO-UHFFFAOYSA-N 0.000 claims description 5
- 238000009210 therapy by ultrasound Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 239000012752 auxiliary agent Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000007517 polishing process Methods 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims 1
- 239000006185 dispersion Substances 0.000 abstract description 5
- 239000000047 product Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 12
- 238000012986 modification Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 239000000758 substrate Substances 0.000 description 4
- 238000007605 air drying Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- IMSODMZESSGVBE-UHFFFAOYSA-N 2-Oxazoline Chemical compound C1CN=CO1 IMSODMZESSGVBE-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Lubricants (AREA)
Abstract
The invention discloses a high-voltage-resistant insulating sodium-ion battery adhesive tape which comprises an adhesive tape base body, wherein an adhesive layer is attached to the adhesive tape base body, and the adhesive layer comprises the following raw materials in parts by weight: 40-50 parts of phenolic adhesive resin, 10-20 parts of bentonite modifier, 5-10 parts of isocyanate, 2-6 parts of polyethylene wax and 1-2 parts of modified diamond powder. The sodium ion battery adhesive tape adopts the mutual matching of the raw materials such as phenolic adhesive resin, bentonite modifier, isocyanate and the like, the bentonite modifier adopts the improvement treatment on the bentonite, the bentonite is firstly subjected to dispersion treatment to improve the dispersion degree of the bentonite, then is modified by insulating liquid, then is modified by reticular cross-linking liquid, and finally is improved by heat treatment, and the obtained bentonite can obviously improve the insulation property and the voltage resistance of the product.
Description
Technical Field
The invention relates to the technical field of sodium ion battery adhesive tapes, in particular to a high-voltage-resistant insulating sodium ion battery adhesive tape.
Background
A sodium ion battery, which is a rechargeable battery, mainly relies on sodium ions moving between a positive electrode and a negative electrode to operate, similar to a lithium ion battery. The working principle of the sodium ion battery is similar to that of the lithium ion battery, and the charge and discharge are realized by utilizing the process of embedding and releasing sodium ions between a positive electrode and a negative electrode. During charging, Na ions are separated from the positive electrode and embedded into the negative electrode through the electrolyte, and meanwhile compensation charges of electrons are supplied to the negative electrode through an external circuit, so that charge balance of the positive electrode and the negative electrode is guaranteed. On the contrary, when discharging, Na ions are extracted from the negative electrode and inserted into the positive electrode through the electrolyte. Under normal charging and discharging conditions, the basic chemical structure of the electrode material is not damaged by the insertion and extraction of sodium ions between the positive electrode and the negative electrode. The adhesive tape is composed of a base material and an adhesive, two or more unconnected objects are connected together through adhesion, and a layer of adhesive is coated on the surface of the adhesive tape.
The invention provides a bentonite-based high-voltage-resistant insulating sodium-ion battery tape, which is based on the fact that bentonite is added on a tape substrate to enhance the bonding strength of the tape substrate, but the insulation property is reduced due to the inorganic property and the ionic property of the bentonite.
Disclosure of Invention
In view of the defects in the prior art, the present invention is directed to a high voltage-resistant insulative sodium-ion battery tape to solve the above problems in the background art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention provides a high-voltage-resistant insulating sodium-ion battery adhesive tape which comprises an adhesive tape substrate, wherein an adhesive layer is attached to the adhesive tape substrate, and the adhesive layer comprises the following raw materials in parts by weight:
40-50 parts of phenolic adhesive resin, 10-20 parts of bentonite modifier, 5-10 parts of isocyanate, 2-6 parts of polyethylene wax and 1-2 parts of modified diamond powder.
Preferably, the adhesive layer comprises the following raw materials in parts by weight:
45 parts of phenolic adhesive resin, 15 parts of bentonite modifier, 7.5 parts of isocyanate, 4 parts of polyethylene wax and 1.5 parts of modified diamond powder.
Preferably, the preparation method of the bentonite modifier comprises the following steps:
s1: placing bentonite in deionized water for ultrasonic dispersion for 10-20min, wherein the ultrasonic power is 200-250W, taking out and drying after the ultrasonic treatment, placing at 200-300 ℃ for reaction for 5-10min, cooling to 65-75 ℃, and keeping the temperature for later use;
s2: feeding the bentonite in the S1 into an insulating liquid according to the weight ratio of 1:5 for reaction treatment, wherein the reaction temperature is 75-85 ℃, the reaction speed is 500-1000r/min, the reaction time is 25-35min, and obtaining the insulating modified bentonite after the reaction is finished;
s3: placing the insulation modified bentonite in the reticular cross-linking liquid according to the weight ratio of 1:5, stirring and dispersing for 10-20min at the stirring speed of 500-;
s4: and finally, carrying out heat treatment improvement, and obtaining the bentonite modifier after the treatment is finished.
Preferably, the preparation method of the insulating liquid comprises the following steps: mixing 1-3% by mass of aminopropyltrimethoxysilane solution with insulating resin according to the weight ratio of 5:1, then adding 1-5% by mass of triallyl isocyanurate in the total amount of the insulating resin, and stirring until the mixture is fully mixed to obtain the insulating liquid.
Preferably, the insulating resin is a polystyrene resin having an oxazoline skeleton.
Preferably, the preparation method of the reticular cross-linking liquid comprises the following steps:
s1: peeling rhizoma Dioscoreae, slicing, pulping in 2-3 times of water, filtering to obtain filtrate, adding itaconic acid 5-10% of the total amount of the filtrate, standing for precipitation, and adding polyethylene glycol 10-20% of the total amount of the filtrate to obtain viscous liquid;
s2: mixing melamine and paraformaldehyde according to a weight ratio of 1:3, adding water and alkali, reacting at 75-85 ℃ for 20min, then adding terephthalaldehyde, adjusting the pH value to 7.5, and fully stirring to obtain modified paraformaldehyde;
s3: adding modified paraformaldehyde according to 10-30% of the total amount of the viscous liquid, then adding maleic anhydride accounting for 1-5% of the total amount of the viscous liquid and performance auxiliaries accounting for 1-3% of the total amount of the viscous liquid, reacting at 65-75 ℃ for 15-25min, wherein the reaction speed is 215-225r/min, and obtaining the cross-linked crosslinking liquid after the reaction is finished.
Preferably, the performance aid is prepared by mixing glucuronolactone and polymethacrylate powder according to the weight ratio of 2: 1.
Preferably, the heat treatment step is that the bentonite is firstly reacted at 70-80 ℃ and is kept for 15-25min, then the temperature is increased to 105-115 ℃ at the speed of 1-3 ℃/min, the heat is kept for 5-10min, and the air cooling is carried out to the room temperature after the heat preservation is finished.
Preferably, the modification method of the modified diamond powder comprises the following steps:
mixing diamond powder and zeolite powder according to the weight ratio of 5:1, then sending the mixture into a grinder for multiple grinding treatment, sending the mixture into deionized water for ultrasonic dispersion with the ultrasonic power of 100-500W for ultrasonic treatment for 10-20min, and obtaining modified diamond powder after ultrasonic treatment, water washing and drying.
Preferably, the multiple polishing process employs a rotation speed of 1500-.
Compared with the prior art, the invention has the following beneficial effects:
1. the sodium ion battery adhesive tape adopts the mutual matching of raw materials such as phenolic adhesive resin, bentonite modifier, isocyanate and the like, the bentonite modifier adopts the improvement treatment on the bentonite, the bentonite is firstly subjected to the dispersion treatment to improve the dispersion degree of the bentonite, then is modified by insulating liquid, secondly is modified by reticular cross-linking liquid, and finally is subjected to the heat treatment improvement, the obtained bentonite can obviously improve the insulation property and the voltage resistance of the product, and the modified diamond powder, the diamond powder and the zeolite powder are matched to be subjected to multiple grinding and ultrasonic dispersion, the granularity and the dispersion degree are improved, the modified diamond powder is dispersed into the raw materials of the product, and the bentonite modifier is matched, so that the high voltage resistance and the insulation property of the battery adhesive tape product are further improved.
2. The bentonite modifier is treated by adopting an insulating liquid, after the bentonite modifier is modified by aminopropyltrimethoxysilane solution of oxazoline skeletal polystyrene resin, the insulating property is preliminarily modified, and after the bentonite modifier is treated by a reticular cross-linking liquid, the multi-activity paraformaldehyde with a reticular structure is matched with a viscous liquid, the reticular stability of the viscous liquid is enhanced, after the performance additives which are proportioned by glucuronolactone and polymethacrylate powder are added, the stability of the network structure is further improved, and after the thermal modification treatment, the structural stability of the product is further stabilized;
3. after the bentonite is modified by the insulating liquid, the bentonite is coated by a cross-linked reticular structure, double modification is realized, layer-network interactive insulating modification coating is realized, the structural stability of an insulating system is further improved, and the product performance is obviously modified by matching with highly dispersed modified diamond powder, isocyanate and polyethylene wax.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1.
The high-voltage-resistant insulating sodium-ion battery adhesive tape comprises an adhesive tape base body, wherein an adhesive layer is attached to the adhesive tape base body, and the adhesive layer comprises the following raw materials in parts by weight:
40 parts of phenolic adhesive resin, 10 parts of bentonite modifier, 5 parts of isocyanate, 2 parts of polyethylene wax and 1 part of modified diamond powder.
The preparation method of the bentonite modifier in the embodiment comprises the following steps:
s1: placing bentonite in deionized water, performing ultrasonic dispersion for 10min with ultrasonic power of 200W, taking out, air drying, reacting at 200 deg.C for 5min, cooling to 65 deg.C, and keeping the temperature;
s2: feeding the bentonite in the S1 into an insulating liquid for reaction treatment, wherein the reaction temperature is 75 ℃, the reaction speed is 500r/min, the reaction time is 25min, and the insulating modified bentonite is obtained after the reaction is finished;
s3: placing the insulation modified bentonite in the reticular cross-linking liquid according to the weight ratio of 1:5, stirring and dispersing for 10min at the stirring speed of 500r/min, and then taking out;
s4: and finally, carrying out heat treatment improvement, and obtaining the bentonite modifier after the treatment is finished.
The preparation method of the insulating liquid in the embodiment comprises the following steps: mixing 1% by mass of aminopropyltrimethoxysilane solution with insulating resin according to the weight ratio of 5:1, then adding 1% by mass of triallyl isocyanurate in the total amount of the insulating resin, and stirring until the mixture is fully mixed to obtain the insulating liquid.
The insulating resin of this example was a polystyrene resin having oxazoline skeleton.
The preparation method of the network crosslinking liquid in this embodiment is as follows:
s1: peeling rhizoma Dioscoreae, slicing, pulping in 2 times of water, filtering to obtain filtrate, adding itaconic acid 5% of the total amount of the filtrate, standing for precipitation, and adding polyethylene glycol 10% of the total amount of the filtrate to obtain viscous liquid;
s2: mixing melamine and paraformaldehyde according to a weight ratio of 1:3, adding water and alkali, reacting at 75 ℃ for 20min, then adding terephthalaldehyde, adjusting the pH value to 7.5, and fully stirring to obtain modified paraformaldehyde;
s3: adding modified paraformaldehyde according to 10% of the total amount of the viscous liquid, then adding 1% of maleic anhydride and 1% of performance auxiliary agent of the total amount of the viscous liquid, reacting for 15min at the temperature of 65 ℃, wherein the reaction speed is 215r/min, and obtaining the cross-linked liquid after the reaction is finished.
The performance assistant in this embodiment is prepared by mixing glucuronolactone and polymethacrylate powder according to a weight ratio of 2: 1.
The heat treatment of this embodiment comprises the steps of reacting bentonite at 70 ℃ for 15min, heating to 105 ℃ at a rate of 1 ℃/min, holding for 5min, and cooling to room temperature.
The modification method of the modified diamond powder of this embodiment is:
mixing diamond powder and zeolite powder according to a weight ratio of 5:1, then sending into a grinding machine for multiple grinding treatment, sending into deionized water for ultrasonic dispersion with ultrasonic power of 100W for 10min after grinding, and obtaining modified diamond powder after ultrasonic dispersion, washing and drying.
In the multiple grinding treatment of this embodiment, the rotation speed of 1500r/min is adopted for grinding for 5min, then the rotation speed of 800r/min is adopted for grinding for 10min, and finally the rotation speed of 200r/min is adopted for grinding for 30min, and the grinding is finished.
Example 2.
The high-voltage-resistant insulating sodium-ion battery adhesive tape comprises an adhesive tape base body, wherein an adhesive layer is attached to the adhesive tape base body, and the adhesive layer comprises the following raw materials in parts by weight:
50 parts of phenolic adhesive resin, 20 parts of bentonite modifier, 10 parts of isocyanate, 6 parts of polyethylene wax and 2 parts of modified diamond powder.
The preparation method of the bentonite modifier in the embodiment comprises the following steps:
s1: placing bentonite in deionized water, performing ultrasonic dispersion for 20min with ultrasonic power of 250W, taking out, air drying, reacting at 300 deg.C for 10min, cooling to 75 deg.C, and keeping the temperature for use;
s2: feeding the bentonite in the S1 into an insulating liquid for reaction treatment, wherein the reaction temperature is 85 ℃, the reaction speed is 1000r/min, the reaction time is 35min, and the insulating modified bentonite is obtained after the reaction is finished;
s3: placing the insulation modified bentonite in the reticular cross-linking liquid according to the weight ratio of 1:5, stirring and dispersing for 20min, wherein the stirring speed is 900r/min, and then taking out;
s4: and finally, carrying out heat treatment improvement, and obtaining the bentonite modifier after the treatment is finished.
The preparation method of the insulating liquid in the embodiment comprises the following steps: mixing 3% by mass of aminopropyltrimethoxysilane solution with insulating resin according to the weight ratio of 5:1, then adding 5% by mass of triallyl isocyanurate in the total amount of the insulating resin, and stirring until the mixture is fully mixed to obtain the insulating liquid.
The insulating resin of this example was a polystyrene resin having oxazoline skeleton.
The preparation method of the network crosslinking liquid in this embodiment is as follows:
s1: peeling rhizoma Dioscoreae, slicing, pulping in 3 times of water, filtering to obtain filtrate, adding itaconic acid 10% of the total amount of the filtrate, standing for precipitation, and adding polyethylene glycol 20% of the total amount of the filtrate to obtain viscous liquid;
s2: mixing melamine and paraformaldehyde according to a weight ratio of 1:3, adding water and alkali, reacting at 85 ℃ for 20min, then adding terephthalaldehyde, adjusting the pH value to 7.5, and fully stirring to obtain modified paraformaldehyde;
s3: adding modified paraformaldehyde according to 30% of the total amount of the viscous liquid, then adding maleic anhydride accounting for 5% of the total amount of the viscous liquid and 3% of performance auxiliaries, reacting for 25min at the temperature of 75 ℃, wherein the reaction speed is 225r/min, and obtaining the cross-linked liquid after the reaction is finished.
The performance assistant in this embodiment is prepared by mixing glucuronolactone and polymethacrylate powder according to a weight ratio of 2: 1.
The heat treatment of this embodiment comprises the steps of reacting bentonite at 80 ℃ for 25min, heating to 115 ℃ at a rate of 3 ℃/min, holding for 10min, and cooling to room temperature.
The modification method of the modified diamond powder of this embodiment is:
mixing diamond powder and zeolite powder according to a weight ratio of 5:1, then sending into a grinding machine for multiple grinding treatment, sending into deionized water for ultrasonic dispersion with ultrasonic power of 500W for 20min after grinding, and obtaining modified diamond powder after ultrasonic dispersion, washing and drying.
In the multi-grinding treatment of this embodiment, the rotation speed of 1800r/min is adopted for grinding for 10min, then the rotation speed of 1200r/min is adopted for grinding for 20min, and finally the rotation speed of 300r/min is adopted for grinding for 40min, and the grinding is finished.
Example 3.
The high-voltage-resistant insulating sodium-ion battery adhesive tape comprises an adhesive tape base body, wherein an adhesive layer is attached to the adhesive tape base body, and the adhesive layer comprises the following raw materials in parts by weight:
45 parts of phenolic adhesive resin, 15 parts of bentonite modifier, 7.5 parts of isocyanate, 4 parts of polyethylene wax and 1.5 parts of modified diamond powder.
The preparation method of the bentonite modifier in the embodiment comprises the following steps:
s1: placing bentonite in deionized water, performing ultrasonic dispersion for 15min with ultrasonic power of 225W, taking out, air drying, reacting at 250 deg.C for 7.5min, cooling to 70 deg.C, and keeping the temperature for use;
s2: feeding the bentonite in the S1 into an insulating liquid for reaction treatment, wherein the reaction temperature is 80 ℃, the reaction speed is 750r/min, the reaction time is 30min, and the insulating modified bentonite is obtained after the reaction is finished;
s3: placing the insulation modified bentonite in the reticular cross-linking liquid according to the weight ratio of 1:5, stirring and dispersing for 15min, wherein the stirring speed is 700r/min, and then taking out;
s4: and finally, carrying out heat treatment improvement, and obtaining the bentonite modifier after the treatment is finished.
The preparation method of the insulating liquid in the embodiment comprises the following steps: mixing aminopropyl trimethoxy silane solution with the mass fraction of 2% with insulating resin according to the weight ratio of 5:1, then adding triallyl isocyanurate accounting for 3% of the total amount of the insulating resin, and stirring until the mixture is fully mixed to obtain the insulating liquid.
The insulating resin of this example was a polystyrene resin having oxazoline skeleton.
The preparation method of the network crosslinking liquid in this embodiment is as follows:
s1: peeling rhizoma Dioscoreae, slicing, pulping in 2.5 times of water, filtering to obtain filtrate, adding itaconic acid 7.5% of the total amount of the filtrate, standing for precipitation, and adding polyethylene glycol 15% of the total amount of the filtrate to obtain viscous liquid;
s2: mixing melamine and paraformaldehyde according to a weight ratio of 1:3, adding water and alkali, reacting at 80 ℃ for 20min, then adding terephthalaldehyde, adjusting the pH value to 7.5, and fully stirring to obtain modified paraformaldehyde;
s3: adding modified paraformaldehyde according to 20% of the total amount of the viscous liquid, then adding maleic anhydride accounting for 3% of the total amount of the viscous liquid and 2% of performance auxiliaries, reacting for 20min at the temperature of 70 ℃, wherein the reaction speed is 220r/min, and obtaining the cross-linked liquid after the reaction is finished.
The performance assistant in this embodiment is prepared by mixing glucuronolactone and polymethacrylate powder according to a weight ratio of 2: 1.
The heat treatment of this embodiment comprises the steps of reacting bentonite at 75 deg.C for 20min, heating to 100 deg.C at a rate of 2 deg.C/min, maintaining for 7.5min, and cooling to room temperature.
The modification method of the modified diamond powder of this embodiment is:
mixing diamond powder and zeolite powder according to a weight ratio of 5:1, then sending into a grinding machine for multiple grinding treatment, sending into deionized water for ultrasonic dispersion with ultrasonic power of 300W for 15min after grinding, and obtaining modified diamond powder after ultrasonic dispersion, washing and drying.
In the multiple grinding treatment of this embodiment, the rotation speed of 1650r/min is used for grinding for 7.5min, then the rotation speed of 1000r/min is used for grinding for 15min, and finally the rotation speed of 250r/min is used for grinding for 35min, and the grinding is finished.
Comparative example 1.
The difference from example 3 is that bentonite without any treatment is used as the bentonite modifier.
Comparative example 2.
The difference from example 3 is that the bentonite modifier is not modified with an insulating liquid.
Comparative example 3.
The difference from example 3 is that the bentonite modifier is not modified with the network crosslinking liquid.
Comparative example 4.
The difference from example 3 is that no viscous liquid modification was added to the network crosslinking liquid.
Comparative example 5.
The difference from example 3 is that no modified diamond powder was added to the product.
The performance of the products of examples 1-4 and comparative examples 1-5 were tested as follows:
| dielectric strength (Kv/mm) | Viscosity (N/25mm) | |
| Example 1 | 44.1 | 3.4 |
| Example 2 | 44.3 | 3.5 |
| Example 3 | 44.7 | 3.6 |
| Example 4 | 44.2 | 3.4 |
| Comparative example 1 | 32.2 | 3.8 |
| Comparative example 2 | 35.2 | 3.7 |
| Comparative example 3 | 36.5 | 3.6 |
| Comparative example 4 | 39.3 | 3.6 |
| Comparative example 5 | 38.9 | 3.5 |
As can be seen from examples 1-4 and comparative examples 1-5, the breakdown voltage of the product in example 3 of the invention is not obviously changed after bentonite is treated, but the insulating property is improved, and the breakdown voltage of the product is obviously improved by modification of the reticular cross-linking liquid and modification of the insulating liquid.
The invention further researches, develops and processes the breakdown strength performance of the reticular cross-linking liquid on the product.
Experimental example 1
The same raw materials as those of the product in example 3 were used except that no modified paraformaldehyde was added.
Experimental example 2
The same raw material as that of the product in example 3, except that the performance aid contains no glucuronolactone.
Experimental example 3
The same raw materials as those of the product in example 3, except that no polymethacrylate powder is added into the performance auxiliary agent.
| Dielectric strength (Kv/mm) | |
| Experimental example 1 | 37.5 |
| Experimental example 2 | 40.2 |
| Experimental example 3 | 41.6 |
In the preparation of the reticular cross-linking liquid, the modified paraformaldehyde has the greatest influence on the product performance, the viscous liquid is modified, the glucuronolactone is modified, and the polymethacrylate powder is prepared.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The high-voltage-resistant insulating sodium-ion battery adhesive tape comprises an adhesive tape base body and is characterized in that an adhesive layer is attached to the adhesive tape base body, and the adhesive layer comprises the following raw materials in parts by weight:
40-50 parts of phenolic adhesive resin, 10-20 parts of bentonite modifier, 5-10 parts of isocyanate, 2-6 parts of polyethylene wax and 1-2 parts of modified diamond powder;
the preparation method of the bentonite modifier comprises the following steps:
s1: placing bentonite in deionized water for ultrasonic dispersion for 10-20min, wherein the ultrasonic power is 200-250W, taking out and drying after the ultrasonic treatment, placing at 200-300 ℃ for reaction for 5-10min, cooling to 65-75 ℃, and keeping the temperature for later use;
s2: the bentonite in the S1 is sent into the insulating liquid for reaction treatment, the reaction temperature is 75-85 ℃, the reaction speed is 500-1000r/min, the reaction time is 25-35min, and the insulating modified bentonite is obtained after the reaction is finished;
s3: placing the insulation modified bentonite in the reticular cross-linking liquid according to the weight ratio of 1:5, stirring and dispersing for 10-20min at the stirring speed of 500-;
s4: and finally, carrying out heat treatment improvement, and obtaining the bentonite modifier after the treatment is finished.
2. The high-voltage-resistant insulating sodium-ion battery adhesive tape according to claim 1, wherein the adhesive layer comprises the following raw materials in parts by weight:
45 parts of phenolic adhesive resin, 15 parts of bentonite modifier, 7.5 parts of isocyanate, 4 parts of polyethylene wax and 1.5 parts of modified diamond powder.
3. The high-voltage-resistant insulating sodium-ion battery tape according to claim 1, wherein bentonite in the bentonite modifier is fed into the insulating liquid in a weight ratio of 1: 5.
4. The high-voltage-resistant insulating sodium-ion battery adhesive tape according to claim 3, wherein the preparation method of the insulating liquid comprises the following steps: mixing 1-3% by mass of aminopropyltrimethoxysilane solution with insulating resin according to the weight ratio of 5:1, then adding 1-5% by mass of triallyl isocyanurate in the total amount of the insulating resin, and stirring until the mixture is fully mixed to obtain the insulating liquid.
5. The tape according to claim 4, wherein the insulating resin is a polystyrene resin having oxazoline skeleton.
6. The adhesive tape for the high-voltage-resistant insulating sodium-ion battery of claim 3, wherein the preparation method of the reticular cross-linking liquid comprises the following steps:
s1: peeling rhizoma Dioscoreae, slicing, pulping in 2-3 times of water, filtering to obtain filtrate, adding itaconic acid 5-10% of the total amount of the filtrate, standing for precipitation, and adding polyethylene glycol 10-20% of the total amount of the filtrate to obtain viscous liquid;
s2: mixing melamine and paraformaldehyde according to a weight ratio of 1:3, adding water and alkali, reacting at 75-85 ℃ for 20min, then adding terephthalaldehyde, adjusting the pH value to 7.5, and fully stirring to obtain modified paraformaldehyde;
s3: adding modified paraformaldehyde according to 10-30% of the total amount of the viscous liquid, then adding maleic anhydride accounting for 1-5% of the total amount of the viscous liquid and performance auxiliaries accounting for 1-3% of the total amount of the viscous liquid, reacting at 65-75 ℃ for 15-25min, wherein the reaction speed is 215-225r/min, and obtaining the cross-linked crosslinking liquid after the reaction is finished.
7. The high-voltage-resistant insulating sodium-ion battery adhesive tape as claimed in claim 6, wherein the performance auxiliary agent is prepared by mixing glucuronolactone and polymethacrylate powder according to a weight ratio of 2: 1.
8. The adhesive tape for high-voltage-resistant insulating sodium-ion batteries as claimed in claim 3, wherein the heat treatment comprises the steps of reacting bentonite at 70-80 ℃ for 15-25min, increasing the temperature to 105-115 ℃ at a rate of 1-3 ℃/min, keeping the temperature for 5-10min, and cooling to room temperature.
9. The high-voltage-resistant insulating sodium-ion battery adhesive tape according to claim 1, wherein the modification method of the modified diamond powder comprises the following steps:
mixing diamond and zeolite powder according to the weight ratio of 5:1, then sending the mixture into a grinding machine for multiple grinding treatment, sending the mixture into deionized water for ultrasonic dispersion with the ultrasonic power of 100-500W for 10-20min, and obtaining modified diamond powder after ultrasonic treatment, washing and drying.
10. The method as claimed in claim 9, wherein the multiple polishing process comprises polishing at a rotation speed of 1500-.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1440604A (en) * | 1973-08-15 | 1976-06-23 | Astor Chemical Ltd | Insulating compositions |
| JPH08198617A (en) * | 1995-01-19 | 1996-08-06 | Kunimine Kogyo Kk | Modified bentonite and its production |
| CN103831734A (en) * | 2014-02-11 | 2014-06-04 | 当涂县南方红月磨具磨料有限公司 | Emery grinding wheel containing zeolite powder |
| CN105860426A (en) * | 2016-05-12 | 2016-08-17 | 王尧尧 | Method for preparing cable insulating materials with nanometer magnesium oxide/low-density polyethylene/modified bentonite and application of cable insulating materials |
| CN112724868A (en) * | 2020-12-10 | 2021-04-30 | 深圳先进技术研究院 | Insulating dielectric composite film material and preparation method and application thereof |
| CN113185940A (en) * | 2021-06-17 | 2021-07-30 | 广东中晨电子新材料有限公司 | Insulating glue film composition and application thereof in printed circuit board |
-
2022
- 2022-01-12 CN CN202210032099.8A patent/CN114316833A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1440604A (en) * | 1973-08-15 | 1976-06-23 | Astor Chemical Ltd | Insulating compositions |
| JPH08198617A (en) * | 1995-01-19 | 1996-08-06 | Kunimine Kogyo Kk | Modified bentonite and its production |
| CN103831734A (en) * | 2014-02-11 | 2014-06-04 | 当涂县南方红月磨具磨料有限公司 | Emery grinding wheel containing zeolite powder |
| CN105860426A (en) * | 2016-05-12 | 2016-08-17 | 王尧尧 | Method for preparing cable insulating materials with nanometer magnesium oxide/low-density polyethylene/modified bentonite and application of cable insulating materials |
| CN112724868A (en) * | 2020-12-10 | 2021-04-30 | 深圳先进技术研究院 | Insulating dielectric composite film material and preparation method and application thereof |
| CN113185940A (en) * | 2021-06-17 | 2021-07-30 | 广东中晨电子新材料有限公司 | Insulating glue film composition and application thereof in printed circuit board |
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