CN108485556A - A kind of solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape and its preparation method and application - Google Patents
A kind of solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape and its preparation method and application Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
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- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/255—Polyesters
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- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
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- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1808—C8-(meth)acrylate, e.g. isooctyl (meth)acrylate or 2-ethylhexyl (meth)acrylate
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/33—Applications of adhesives in processes or use of adhesives in the form of films or foils for batteries or fuel cells
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention belongs to lithium ion battery glue and tape technology fields, disclose a kind of solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape and its preparation method and application, it is first to mix hard monomer, soft monomer and functional monomer, chain-transferring agent and solvent is added, after adding initiator for reaction, curing agent and mill base are added, solvent acrylates type acid and alkali-resistance pressure sensitive adhesive is made after film drying, the mass ratio of the hard monomer, soft monomer and functional monomer is (80~95)：(1~15)：(2~5).The pressure sensitive adhesive is resistant to acid, caustic corrosion, is especially resistant to the corrosion of faintly acid lithium-ion battery electrolytes.Pressure sensitive adhesive and adhesive tape obtained have excellent high temperature electrolyte resistance ability, can meet large-sized power lithium battery tape performance demand, have compared with high performance-price ratio.
Description
Technical field
It is molten more particularly, to a kind of polyacrylate the invention belongs to lithium ion battery glue and tape technology field
Dosage form acid and alkali-resistance pressure sensitive adhesive adhesive tape and its preparation method and application.
Background technology
Pressure-sensitive tape is a kind of extensive material of use, is sent out in industrial packaging, electronic apparatus manufacture and engineer application
Wave important function.According to various pressure sensitive adhesive tape characteristics difference, there are some special processing procedure adhesive tapes and functional adhesive tape in every profession and trade,
Adhesive tape manufactures and application industry is commonly referred to as Special pressure sensitive adhesive band.
Specialty tape type is various, and different type adhesive tape is different to the performance requirement of pressure-sensitive glue.Except need to ensure traditional glue
Outside three big mechanical performance indexs of band, new parameter, which also constantly enriches to properties of product, to be controlled, such as heatproof, proof voltage it is special,
Mist degree, conductance and acid-proof alkaline etc..Acid and alkali-resistance adhesive tape with particular/special requirement is opened along with the fast development of battery industry
It issues.Especially with lithium electricity industrial expansion, battery production the degree of automation is continuously improved, at the same market to high current,
The lithium battery group demand of high voltage is more and more, leads to the terminal adhesive tape used in lithium battery processing procedure, polar ear adhesive belt or even pack
Adhesive tape all proposes requirements at the higher level to performances such as electrolyte resistance, heatproofs, this is to propose new challenge to pressure sensitive adhesive glue development person.
Lithium battery special adhesive tape rises in Japan.Japan since 1991 Sony companies develop first piece of commercial batteries with
Come, lithium battery manufacturing technology is held a safe lead always.Start along with mass automatic production line, there is an urgent need to one for producer
Kind can be used in the adhesive tape product of automatic continuous production.To meet this needs, Japanese adhesive tape manufacturing enterprise Ru Dong, Si Gang
The acid and alkali-resistance adhesive tape product that series is resistant to lithium battery electrolytes corrosion, this two companies glue are had developed Deng for Li electricity manufacturing enterprises
Band product occupies leading position in lithium battery manufacturing.As later stage nineties New Energy Industry manufacturing center turns to China
It moves, domestic to the special acid and alkali-resistance adhesive tape rush of demand of lithium electricity, but under the pressure of overseas-funded enterprise's technical monopoly, this series of products is always not
It can realize production domesticization, corresponding product is also based on import.Although after 2007 domestic corporation some produced similar production
Product, but product quality still cannot reach application demand, and resistance to acid and alkali is compared trans-corporation's product with heat resistance and is also had very greatly
Gap.
Appearance after 2010 with country to power vehicle development plan, lithium battery industry development have welcome unprecedented machine
It meets, but also brings very big challenge.Compared with common 3C classes battery using the battery of electrical source of power, have battery core quantity it is more, electric discharge electricity
The feature that stream is big, security requirement is high, this also proposes requirements at the higher level to application material.For pressure sensitive adhesive tape, due to high electricity
Pressure heavy-current discharge causes temperature in battery pack to increase, and as the acid and alkali-resistance adhesive tape product applied in inside battery, has to full
Foot is also resistant to the application conditions of electrolytic corrosion at high temperature, this problem becomes the focus of lithium electricity adhesive tape research and development.
Invention content
In order to solve above-mentioned the shortcomings of the prior art, it is pressure-sensitive to provide a kind of acrylate solvent type acid and alkali-resistance
Glue adhesive tape.
Another object of the present invention is to provide the preparation sides of above-mentioned solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape
Method.This method, which uses, has suitable glass temperature monomer mixture, and being aided with has the cross-linking monomer of special crosslinking functionality to carry out
Solution homogeneous polymerization improves adhesive tape heat resistance, while in use in the polyacrylate pressure-sensitive with crosslinked group
It is re-introduced into acid and alkali-resistance modified firming agent, to make such pressure-sensitive glue high temperature resistant be resistant to electrolytic corrosion again simultaneously.
It is still another object of the present invention to provide the applications of above-mentioned solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape.
The purpose of the present invention is realized by following technical proposals：
A kind of solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape is first by hard monomer, soft monomer and functional monomer
Chain-transferring agent and solvent is added in mixing, after adding initiator for reaction, curing agent and mill base is added, is made poly- after film drying
The mass ratio of acrylate solvent type acid and alkali-resistance pressure sensitive adhesive, the hard monomer, soft monomer and functional monomer is (80~95)：(1
~15)：(2~5).
Preferably, the hard monomer is methyl acrylate, ethyl acrylate, vinylacetate, acrylonitrile, methacrylic acid
In methyl esters, 2-ethyl hexyl acrylate, lauryl acrylate, octadecyl acrylate, acrylonitrile, butyl acrylate or styrene
More than one；
Preferably, the soft monomer is vinylacetate, dibutyl maleate, dioctyl maleate, propylene
One or more of acetoacetic ester, 2-ethyl hexyl acrylate or butyl acrylate；
Preferably, the functional monomer is acrylic acid, methacrylic acid, hydroxy-ethyl acrylate, hydroxypropyl acrylate, third
Olefin(e) acid tetrahydrofuran ester, hydroxy propyl methacrylate, divinylbenzene, maleic anhydride, hydroxyethyl methacrylate, acrylamide
Or one or more of N hydroxymethyl acrylamide.
Preferably, the solvent is one or more of toluene, dimethylbenzene, ethyl acetate or butyl acetate；The chain turns
It is lauryl mercaptan and/or aliphatic mercaptan to move agent；The initiator is cyclohexanone peroxide, dibenzoyl peroxide, idol
Nitrogen bis-isobutyronitrile, azobisisoheptonitrile or benzoyl peroxide.
Preferably, the mass ratio between the solvent, chain-transferring agent and initiator is (50~70)：(0~1)：(0~1).
Preferably, the curing agent is one or more of isocyanates, aziridines or carbodiimides, the color
Slurry can be yellow, blue, red, black or white colorant.
The preparation method of above-mentioned solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape, comprises the following specific steps that：
S1. hard monomer, soft monomer and functional monomer are mixed, obtain monomer mixture；
S2. solvent and chain-transferring agent are mixed, is warming up to 70~95 DEG C of stirrings, it, will when reaction temperature is 75~100 DEG C
Initiator solution B1 is added dropwise in monomer mixture A1 in part in step S1, is kept the temperature at 70~95 DEG C after reaction；
S3. again by remaining monomer mixture A2 in step S1, while remaining initiator solution B2 in a dropping step S2
It is kept the temperature afterwards at 75~95 DEG C；
S4. it is eventually adding initiator solution B3 to keep the temperature at 70~95 DEG C, is cooled to room temperature and discharges up to polyacrylate
Solvent type acid and alkali-resistance pressure sensitive adhesive；
S5. curing agent and mill base are added in solvent acrylates type acid and alkali-resistance pressure sensitive adhesive, after film drying, is made poly-
Acrylate solvent type acid and alkali-resistance pressure sensitive adhesive adhesive tape.
Preferably, the time reacted described in step S2 is 15~30min, time of the heat preservation be 30min~
90min；
Preferably, the time being added dropwise described in step S3 is 3~6h, and the time of the heat preservation is 30~90min；
Preferably, the time kept the temperature described in step S4 is 1~4h.
Preferably, step S2, initiator described in S3 and S4 is azodiisobutyronitrile or benzoyl peroxide, the initiation
Solvent in agent solution is ethyl acetate or butyl acetate；
Preferably, the mass ratio of the monomer mixture A1 and monomer mixture A2 is (3~30)：(70~97)；It is described
Initiator solution B1：Initiator solution B2：The mass ratio of initiator solution B3 is 10：5：(2~3).
Application of the solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape in field of lithium ion battery.
Preferably, the electrolyte solute of the lithium ion battery be lithium hexafluoro phosphate and/or LiBF4, the lithium from
The electrolyte solvent of sub- battery is one or more of ethylene carbonate, propene carbonate or dimethyl carbonate.
Compared with prior art, the invention has the advantages that：
1. solvent acrylates type acid and alkali-resistance pressure sensitive adhesive made of the present invention has the advantages that high temperature-resistant acid-resistant alkali, simultaneously
Due to the adjustment of interior cross-linking monomer, the overall performance of pressure sensitive adhesive is also significantly improved, the external crosslinking curing agent of independent packaging
Also ensure pressure sensitive adhesive storage time, bin stability up to 2 years or more, be suitable for various acid and alkali-resistance adhesive tapes, such as electroplating tape,
Terminal adhesive tape and polar ear adhesive belt etc..
2. the pressure sensitive adhesive of the obtained high temperature resistant of the present invention and acid and alkali-resistance, due to the polymeric pressure sensitive adhesive formed in polyacrylate
Middle introducing functional monomer introduces external crosslinking curing agent again simultaneously, and it is non-serviceable in power battery to overcome traditional pressure sensitive glue
Problem.
3. the method for the present invention, which uses, has suitable glass temperature monomer mixture, it is aided with the friendship for having special crosslinking functionality
Receipts or other documents in duplicate body carries out solution homogeneous polymerization, improves adhesive tape heat resistance, while the polyacrylic acid with crosslinked group in use
Acid and alkali-resistance modified firming agent is re-introduced into ester pressure-sensitive, to make such pressure sensitive adhesive high temperature resistant be resistant to electrolyte corruption again simultaneously
Erosion.
4. the present invention can be made suitable using soft monomer, hard monomer and functional monomer as monomer using chain tra nsfer monomer
The pressure sensitive adhesive of molecular weight balances viscosity and durothermic requirement, it is ensured that pressure sensitive adhesive viscosity is suitable, avoids open defect as far as possible
Generation；The crosslinking degree that pressure sensitive adhesive can be significantly improved using outer addition curing agent is also effectively increased while improving heatproof
The formation of strength polymer network, the electrolyte resistance ability of reinfored glue band.In addition, the addition of addition curing agent also makes glue mechanical property outside
Can adjust becomes simple, it is easier to obtain in accordance with application demand product.
Specific embodiment
The content further illustrated the present invention with reference to specific embodiment, but should not be construed as limiting the invention.
Unless otherwise specified, the conventional means that technological means used in embodiment is well known to those skilled in the art.Except non-specifically
Illustrate, reagent that the present invention uses, method and apparatus is the art conventional reagent, methods and apparatus.
Embodiment 1
1. preparation method：
(1) by 400 parts of butyl acrylate, 8 parts of acrylic acid, 4 parts of methacrylic acid, 6 parts of hydroxypropyl acrylate, metering system
12 parts of sour methyl esters, 10 parts of lauryl acrylate are put in stirred tank and are stirred, and obtain monomer mixture.
(2) 100 parts of dimethylbenzene, 400 parts of ethyl acetate, 0.03 part of n-dodecyl mercaptan are weighed in reaction kettle bottom as kettle
Bottom material.
(3) it weighs 1 part of benzoyl peroxide and dissolves preparation initiator completely in 50 parts of butyl acetates, according to mass ratio
10：5：2 are divided into three parts；
(4) reaction kettle is warming up to 78~82 DEG C of solution, 30 parts of initiators is added, while the monomer mixture of step 1 is added
132 parts, keep the temperature 10min；15 parts of initiators are added dropwise in 308 parts of residual monomer mixture simultaneously in a dropping step 1, and 4h is added dropwise to complete；
Rear reaction kettle heat preservation 30min is dripped off, 6 parts of initiators are added, then keep the temperature 2h, it is resistance to obtain solvent acrylates type for cooling discharge
Soda acid pressure sensitive adhesive.
(5) 20 parts of curing agent isocyanates, blue slurry are added in above-mentioned solvent acrylates type acid and alkali-resistance pressure sensitive adhesive
55 parts, after film drying, the pressure sensitive adhesive tape of high temperature-resistant acid-resistant alkali is made.
2. performance test：
(1) solvent acrylates type acid and alkali-resistance pressure sensitive adhesive characteristic is tested
It is tested by universal method, pressure sensitive adhesive mechanic property test method, tack presses GB-4852-84 standards, 180 ° of strippings
Intensity is tested by GB-2792-81, is held to glue and be tested by GB-4851-84.
Table 1 is the physical property of the present embodiment solvent acrylates type acid and alkali-resistance pressure sensitive adhesive, as can be known from Table 1, glue
Solid content is moderate, and viscosity is suitble to common coating machine coating to use.
The physical property of 1 embodiment of table, 1 solvent acrylates type acid and alkali-resistance pressure-sensitive glue
(2) (rubberization thickness is 10 ± 1 μm for pressure sensitive adhesive tape performance test.)
The test method of heatproof：Adhesive tape is affixed on steel plate, is placed in the baking oven of set point of temperature, 30 minutes is kept the temperature, if do not had
There is glue transfer, shrink, metachromatism, then record this temperature, otherwise reduces temperature and continue to test.
The test method of electrolyte resistance：Adhesive tape, which is attached on aluminium foil, is placed in electrolyte 8h immersions electrolyte, observation at 80 DEG C
Whether adhesive tape change colour, fall off, degumming, phenomena such as shrinking, if not recording OK, otherwise record NG.
Table 2 is the performance test of 1 solvent acrylates type acid and alkali-resistance pressure sensitive adhesive tape of embodiment.As can be known from Table 2, it is made
Adhesive tape heatproof it is good, electrolyte resistance performance passes through test.
The performance test of 2 embodiment of table, 1 solvent acrylates type acid and alkali-resistance pressure sensitive adhesive tape
Embodiment 2
1. preparation method：
(1) by 360 parts of Isooctyl acrylate monomer, 8 parts of acrylic acid, 4 parts of methacrylic acid, 6 parts of hydroxypropyl acrylate, methyl-prop
22 parts of 30 parts of e pioic acid methyl ester, 20 parts of lauryl acrylate and vinylacetate are put in stirred tank and are stirred, and obtain monomer mixing
Object.
(2) 50 parts of toluene, 450 parts of ethyl acetate, 0.03 part of n-dodecyl mercaptan is claimed to expect as bottom in reaction kettle bottom.
(3) 1.2 parts of benzoyl peroxides are weighed and dissolve preparation initiator completely in 50 parts of butyl acetates, according to mass ratio
10：5：2 are divided into three parts；
(4) reaction kettle is warming up to 78~82 DEG C of solution reflux temperature, 30.3 parts of initiators is added, while being added in step 1
In 135 parts of monomer mixture, at 78~82 DEG C keep the temperature 10min；315 parts of residual monomer mixture is simultaneously in a dropping step 1
15.1 parts of initiators are added dropwise, 4h is dripped off；It drips off rear reaction kettle and keeps the temperature 30min at 78~82 DEG C, 6 parts of initiators are added, then 78
~82 DEG C of heat preservation 2h, are cooled to room temperature discharging, obtain solvent acrylates type acid and alkali-resistance pressure sensitive adhesive.
(5) above-mentioned solvent acrylates type acid and alkali-resistance pressure sensitive adhesive is taken, 20 parts of isocyanate curing agent, blue slurry 40 is added
The pressure sensitive adhesive tape of high temperature-resistant acid-resistant alkali is made after film drying in 45 parts of part and yellow pulp.
2. performance test
The test method of use is the same as embodiment 1.
(1) solvent acrylates type acid and alkali-resistance pressure sensitive adhesive characteristic is tested
Table 3 is 2 solvent acrylates type acid and alkali-resistance pressure sensitive adhesive technical indicator of embodiment, and as can be known from Table 3, glue contains admittedly
Measure moderate, viscosity is suitble to common coating machine coating to use.
3 embodiment of table, 2 solvent acrylates type acid and alkali-resistance pressure sensitive adhesive physical property
(2) (rubberization thickness is 10 ± 1 μm for the performance test of pressure sensitive adhesive tape.)
Table 4 is that the performance test of 2 solvent acrylates type acid and alkali-resistance pressure sensitive adhesive tape of embodiment is made as can be known from Table 4
Adhesive tape heatproof it is good, electrolyte resistance performance passes through test.
The performance of 4 embodiment of table, 2 solvent acrylates type acid and alkali-resistance pressure sensitive adhesive tape
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by change, modification, substitute, combination and simplify,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (10)
1. a kind of solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape, which is characterized in that be first by hard monomer, soft monomer and work(
Energy property monomer mixing, is added chain-transferring agent and solvent, and after adding initiator for reaction, curing agent and mill base, film drying is added
Solvent acrylates type acid and alkali-resistance pressure sensitive adhesive is made afterwards, the mass ratio of the hard monomer, soft monomer and functional monomer is (80
~95)：(1~15)：(2~5).
2. solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape according to claim 1, which is characterized in that the hard list
Body is methyl acrylate, ethyl acrylate, vinylacetate, acrylonitrile, methyl methacrylate, 2-ethyl hexyl acrylate,
One or more of lauryl acrylate, octadecyl acrylate, acrylonitrile, butyl acrylate or styrene；
The soft monomer is vinylacetate, dibutyl maleate, dioctyl maleate, ethyl acrylate, propylene
One or more of sour 2- ethylhexyl esters or butyl acrylate；
The functional monomer is acrylic acid, methacrylic acid, hydroxy-ethyl acrylate, hydroxypropyl acrylate, acrylic acid tetrahydrochysene furan
It mutters ester, hydroxy propyl methacrylate, divinylbenzene, maleic anhydride, hydroxyethyl methacrylate, acrylamide or N- methylols
One or more of acrylamide.
3. solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape according to claim 1, which is characterized in that the solvent
For one or more of toluene, dimethylbenzene, ethyl acetate or butyl acetate；The chain-transferring agent be lauryl mercaptan and/or
Aliphatic mercaptan；The initiator is cyclohexanone peroxide, dibenzoyl peroxide, azodiisobutyronitrile, azobisisoheptonitrile
Or benzoyl peroxide.
4. solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape according to claim 1, which is characterized in that described molten
Mass ratio between agent, chain-transferring agent and initiator is (50~70)：(0~1)：(0~1).
5. solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape according to claim 1, which is characterized in that the solidification
Agent is one or more of isocyanates, aziridines or carbodiimides, and the mill base can be yellow, blue, red, black
Color or white colorant.
6. a kind of preparation side according to any one of Claims 1 to 5 solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape
Method, which is characterized in that comprise the following specific steps that：
S1. hard monomer, soft monomer and functional monomer are mixed, obtain monomer mixture；
S2. solvent and chain-transferring agent are mixed, is warming up to 70~95 DEG C of stirrings, when reaction temperature is 75~100 DEG C, by step
Initiator solution B1 is added dropwise in monomer mixture A1 in part in S1, is kept the temperature at 70~95 DEG C after reaction；
S3. again by remaining monomer mixture A2 in step S1, at the same in a dropping step S2 after remaining initiator solution B2
75~95 DEG C of heat preservations；
S4. it is eventually adding initiator solution B3 to keep the temperature at 70~95 DEG C, is cooled to room temperature and discharges up to solvent acrylates
Type acid and alkali-resistance pressure sensitive adhesive；
S5. curing agent and mill base are added in solvent acrylates type acid and alkali-resistance pressure sensitive adhesive, polypropylene is made after film drying
Acid esters solvent type acid and alkali-resistance pressure sensitive adhesive adhesive tape.
7. the preparation method of solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape according to claim 6, feature exist
In the time reacted described in step S2 is 15~30min, and the time of the heat preservation is 30min~90min；Institute in step S3
The time for stating dropwise addition is 3~6h, and the time of the heat preservation is 30~90min；The time kept the temperature described in step S4 is 1~4h.
8. the preparation method of solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape according to claim 6, feature exist
In step S2, initiator described in S3 and S4 is azodiisobutyronitrile or benzoyl peroxide, molten in the initiator solution
Agent is ethyl acetate or butyl acetate, and the mass ratio of the monomer mixture A1 and monomer mixture A2 are (3~30)：(70~
97)；The initiator solution B1：Initiator solution B2：The mass ratio of initiator solution B3 is 10：5：(2~3).
9. solvent acrylates type acid and alkali-resistance pressure sensitive adhesive adhesive tape answering in field of lithium ion battery described in Claims 1 to 5
With.
10. application of the solvent acrylates type acid and alkali-resistance pressure sensitive adhesive in field of lithium ion battery according to claim 9,
It is characterized in that, the electrolyte solute of the lithium ion battery is lithium hexafluoro phosphate and/or LiBF4, the lithium-ion electric
The electrolyte solvent in pond is one or more of ethylene carbonate, propene carbonate or dimethyl carbonate.
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| CN113861878B (en) * | 2021-09-09 | 2024-05-14 | 合肥乐凯科技产业有限公司 | High temperature resistant protection film |
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