CN203411500U - Special adhesive tape for energy storage power lithium battery - Google Patents
Special adhesive tape for energy storage power lithium battery Download PDFInfo
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- CN203411500U CN203411500U CN201320433290.XU CN201320433290U CN203411500U CN 203411500 U CN203411500 U CN 203411500U CN 201320433290 U CN201320433290 U CN 201320433290U CN 203411500 U CN203411500 U CN 203411500U
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Abstract
The utility model relates to a special adhesive tape for an energy storage power lithium battery. The adhesive tape comprises an adhesive layer, a hardened coating layer, a base layer and a release layer, wherein the base layer is a polyester film; the hardened coating layer is an epoxy resin layer and is applied onto the front surface of the base layer; the release layer is a one-component non-silicon release agent coating layer and is arranged on the rear surface of the base layer; the adhesive layer is arranged on the outer surface of the hardened coating layer. The adhesive tape is provided with the adhesive layer, the hardened coating layer, the base layer and the release layer which have corresponding functions, wherein the adhesive layer is directly contacted with a battery termination part and has the characteristics of firmness in adhesion, electrolyte resistance, no halogen, capability of meeting the ROHS (Restriction of the use of certain Hazardous Substances) requirements and the like; the hardened coating layer can be used for further improving the puncture strength of the base layer; the base layer can be used for preventing piercing of pole piece burrs; the release layer has the characteristics of excellent adhesion with the base layer and quick drying performance. The special adhesive tape for the energy storage power lithium battery has the advantages of environmental protection, capability of meeting the ROHS requirements, good electrolyte resistance and the like, and is mainly used for insulating and protecting the lithium battery termination part.
Description
Technical field
The utility model relates to a kind of lithium cell that is specifically designed to and stops the insulation at position and the sealing tape of protection, particularly a kind of electrolyte resistance, superpower safe environment protection type energy storage, the dynamic lithium battery special adhesive adhesive tape of puncture intensity.
Background technology
At present, only have in the world Japanese Si Gang, day east etc. several enterprises can produce this class adhesive tape (energy storage, dynamic lithium battery special adhesive adhesive tape), in China market in monopoly position.Over the past two years, because European Union has worked out strict environmental regulation for electronic product, this several prods had not met European Union environmental protection requirement, face the predicament of progressively withdrawing from the market, therefore, although expensive, kind is few again, but because there is no substitute products, so occupy corner on the market status always.Domestic enterprise pays a large sum of foreign exchange every year for this reason.
Therefore, research safety environment protection type energy storage, dynamic lithium battery special adhesive adhesive tape, make it to possess excellent resistance to acids and bases, good temperature tolerance, in the time of good insulativity, the < < that meets European Union is electric, in electronics, some objectionable impurities instruction > > (being called for short ROHS) and Sony's environmental regulations are used in restriction, Battery Directive halogen requirement etc., it is important problem of the pressure-sensitive adhesive article industry in the world, the important technology content of Ye Shi China pressure sensitive adhesive goods industry and international counterparts competition.
The product that domestic manufacturer can provide at present, by Ji Jia small business few in number is imitated, produce, quality and performance index far can not be mentioned in the same breath with imported product, the not environmental protection of ubiquity starting material, viscosity is poor, peeling force declines, heatproof is on the low side, to gluing, easily come unstuck, base material does not reach should the shortcomings such as characteristic, performance is difficult to meet service requirements, does not also meet the feature of environmental protection and security, is more difficult to adjust the kind of product and the demand that performance adapts to market.At present the domestic enterprise that is engaged in this field products production and research and development is less, what the product line of domestic corporation related to this technology does not all produce the product of replace imported completely, and ROHS ban and Sony's environmental regulations, Battery Directive and halogen that performance index do not meet European Union yet require etc.
Utility model content
The purpose of this utility model is to overcome the deficiency that above-mentioned prior art exists, and a kind of ROHS of meeting, Halogen are provided, puncture intensity is large, insulativity is high, viscosity is moderate, and the energy storage of electrolyte resistance, dynamic lithium battery special adhesive adhesive tape, to overcome the deficiencies in the prior art.
The purpose of this utility model is achieved in that
A kind of energy storage, dynamic lithium battery special adhesive adhesive tape, it is characterized in that: comprise gluing layer, hardening coat, basic unit and release layer that order distributes, described basic unit is polyester film, described hardening coat is epoxy resin layer, hardening coat is coated on the front of basic unit, described release layer is the non-silicon parting agent of single-component coating, and release layer is arranged on the back side of basic unit, and described gluing layer is arranged on hardening coat outside surface.
The purpose of this utility model can also adopt following technical measures to solve:
As a kind of scheme more specifically, the polyester film of described basic unit for processing through two-way stretch, its thickness is 0.012mm to 0.036mm.Polyester film is processed through two-way stretch, because stretching molecule is directed, so that this polyester film has mechanical property is good, rigidity, hardness and toughness are high, puncture, rub resistance, high temperature resistant and low temperature, the advantage such as chemical proofing, oil-proofness, resistance to air loss and fragrance protectiveness are good.In addition, in order to improve sizing agent or the ink sticking power to basic unit, high surface energy will, through processing, be carried in the surface of polyester film.The treatment process of polyester film surface has: corona treatment method, method of chemical treatment, mechanical hacking method, coating etc.Wherein, the most frequently used is corona treatment method: between two electrodes, add that high-frequency voltage can form corona or become spark (sunshine light) electric discharge, when polyester film surface adds high-frequency voltage between two electrodes, corona is irradiated to polyester film surface, under this high-octane discharge condition, the electron pair of corona and ion pair are clashed into polyester film surface, make its surface produce charged ion; Simultaneously, corona also makes oxygen, nitrogen and the water equimolecular generation ionization in environment, then react with the plastic molecules of polyester film surface and generate hydroxyl, carboxyl and alkoxyl group isopolarity group, the charged ion of these polar groups and polyester film surface increases the polarity of polyester film surface greatly, surface can be improved, thereby strengthened ink or sizing agent in wettability and the glutinous base power of substrate surface, met the job requirements such as the printing of polyester film surface or bonding.By corona treatment, make more than polyester film coated face surface tension reaches 42 dyne/cm.
Described polyester film thickness has a variety of selections, general available 0.012mm, 0.015mm, 0.020mm, 0.025mm, 0.036mm equal thickness.
Described gluing layer is for adopting polyacrylate(s) pressure-sensitive adhesive, solidifying agent, filler and solvent to coordinate the gluing layer of making.
Described polyacrylate(s) pressure-sensitive adhesive adopts polyacrylate(s) pressure sensitive adhesive and the modified polyacrylate class pressure sensitive adhesive of two kinds of different viscosity to be mixed according to certain ratio; Wherein, described polyacrylate(s) pressure sensitive adhesive is that molecular weight, molecular weight distribution are narrower, the reasonable pressure sensitive adhesive of initial cohesiveness, and modified polyacrylate class pressure sensitive adhesive is the pressure sensitive adhesive that molecular weight is large, molecular weight distribution is wider, peeling force is higher.The pressure sensitive adhesive that existing general adhesive tape adopts is all single a kind of polyacrylate(s) pressure sensitive adhesive, is all difficult to reach excellent performance and the performance of electrolyte resistance separately with above-mentioned pressure sensitive adhesive any.Two kinds of pressure sensitive adhesives mix use, can improve the over-all properties of adhesive tape.
Described solidifying agent is mixed by high-temperature curing agent and low temperature curing agent, and high-temperature curing agent is aminoresin, polyvalent metal salt, alkoxide compound or superoxide, and low temperature curing agent is polyisocyanates.
Described filler is the color of electrolyte resistance, and color is ground and formed by binder, pigment, dispersion agent, wetting agent and stirring solvent.
The color formula of described electrolyte resistance is: binder 10-15 part, pigment 15-35 part, dispersion agent 2-6 part, wetting agent 2-6 part, solvent 50-65 part.
Described binder is selected the modified polyacrylate class pressure sensitive adhesive of electrolyte resistance; Pigment is selected the pigment dyestuff of Halogen, electrolyte resistance.In addition, pigment also will meet ROHS, and pigment color has yellow, blueness, white, can furnishing distinct colors by these several colors.
Described dispersion agent selected fatty acid class, aliphatic amide type, ester class or its combination.
Described wetting agent has been selected anionic and nonionic surface active agent.Aniorfic surfactant comprises alkyl-sulphate, sulfonate, lipid acid or fatty acid ester vitriol, carboxylic soap class, phosphoric acid ester etc.Nonionic surface active agent comprises polyxyethylated alkylphenol, polyoxyethylene aliphatic alcohol ether, polyoxyethylene polyoxypropylene block copolymer etc.
Described solvent is selected the mixture of toluene, ethyl acetate, alcohols or toluene and ethyl acetate.Described solvent is toluene or ethyl acetate, also or the mixture of toluene and ethyl acetate, plays dilution pressure sensitive adhesive, reduces the solid content of pressure sensitive adhesive, to reach, meets the effect that coating requires.
Described polyacrylate(s) pressure-sensitive adhesive is 200-250 part, and solidifying agent is 3-4 part, and filler is 10-12 part, and solvent is 50-55 part.
The production method of a kind of energy storage, dynamic lithium battery special adhesive adhesive tape, it is characterized in that: first, polyester film is carried out two-way stretch processing and carries out that surface corona processing, chemical treatment, mechanical hacking are processed or coating is processed and made more than the positive surface tension of polyester film reaches 42 dyne/cm; Then, the treated polyester film back side is carried on the back to be coated with and process, the non-silicon parting agent of single-component is made into the concentration of 0.5-2% and is printed on the polyester film back side; Polyester film carries out after the processing of the back side, then follows, and with epoxy resin, in polyester film front, carries out hardening coat processing; Then, the sizing agent having prepared is applied on the polyester film front of having carried out hardening coat processing; Finally, through oven dry, rolling, then rewinding, has become sealing tape after cutting.
Described sizing agent forms gluing layer after drying, and sizing agent is prepared by polyacrylate(s) pressure-sensitive adhesive, solidifying agent, filler and solvent, and solidifying agent all will be made into dilute solution before adding in polyacrylate(s) pressure sensitive adhesive, slowly adds in pressure sensitive adhesive.
The beneficial effects of the utility model are as follows:
(1) this kind of safe environment protection type energy storage, dynamic lithium battery special adhesive adhesive tape are to adopt the great polyester film of a kind of puncture intensity or polypropylene film, then film gluing face and non-gluing face are carried out to pre-treatment, the sealing tape that the polyacrylate(s) pressure sensitive adhesive of coating electrolyte resistance forms; Sealing tape has four-layer structure, and every one deck has its function separately, and wherein, gluing layer directly contacts with battery end portion, and having can firm pasting, electrolyte resistance, Halogen, meet the features such as ROHS requirement; Hardening coat adopts epoxy resin to be printed on the gluing face of basic unit, further improves the puncture intensity of basic unit; The material of basic unit own has good puncture intensity, can prevent piercing through of pole piece burr; Release layer has with basic unit and has excellent tack and quick-drying performance;
(2) performances such as energy storage, dynamic lithium battery special adhesive adhesive tape have environmental protection, meet RoHS requirement, and electrolyte resistance is good, are mainly used in insulation and protection that lithium cell stops position.
Accompanying drawing explanation
Fig. 1 is the utility model one example structure schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 1, a kind of energy storage, dynamic lithium battery special adhesive adhesive tape, comprise gluing layer 1, hardening coat 2, basic unit 3 and release layer 4 that order distributes, described basic unit 3 is polyester film, described hardening coat 2 is epoxy resin layer, and hardening coat 2 is coated on the front of basic unit 3, and described release layer 4 is the non-silicon parting agent of single-component coating, release layer 4 is arranged on the back side of basic unit 3, and described gluing layer 1 is arranged on hardening coat 2 outside surfaces.
Described basic unit 3 is polyester film, has good puncture intensity, can prevent piercing through of pole piece burr.Polyester film thickness has a variety of selections, the polyester film of general available 0.012mm, 0.015mm, 0.020mm, 0.025mm, 0.036mm equal thickness, first polyester film is processed through two-way stretch, because stretching molecule is directed, so that this film has mechanical property is good, rigidity, hardness and toughness are high, puncture, rub resistance, high temperature resistant and low temperature, the advantage such as chemical proofing, oil-proofness, resistance to air loss and fragrance protectiveness are good.
Described gluing layer 1 is coordinated and is made by polyacrylate(s) pressure-sensitive adhesive, solidifying agent, filler and solvent.
Described polyacrylate(s) pressure-sensitive adhesive adopts polyacrylate(s) pressure sensitive adhesive and the modified polyacrylate class pressure sensitive adhesive of two kinds of different viscosity to be mixed according to certain ratio; Wherein, described polyacrylate(s) pressure sensitive adhesive is that molecular weight, molecular weight distribution are narrower, the reasonable pressure sensitive adhesive of initial cohesiveness, and modified polyacrylate class pressure sensitive adhesive is the pressure sensitive adhesive that molecular weight is large, molecular weight distribution is wider, peeling force is higher.The pressure sensitive adhesive that existing general adhesive tape adopts is all single a kind of polyacrylate(s) pressure sensitive adhesive, is all difficult to reach excellent performance and the performance of electrolyte resistance separately with above-mentioned pressure sensitive adhesive any.Two kinds of pressure sensitive adhesives mix use, can improve the over-all properties of adhesive tape.
Described solidifying agent is mixed by high-temperature curing agent and low temperature curing agent, and high-temperature curing agent is aminoresin, polyvalent metal salt, alkoxide compound or superoxide, and low temperature curing agent is polyisocyanates.Described solidifying agent is mixed and is made for realizing the crosslinked of sizing agent by high-temperature curing agent and low temperature curing agent, and high-temperature curing agent is aminoresin, polyvalent metal salt, alkoxide compound or superoxide, and low temperature curing agent is polyisocyanates.Conventional polyisocyanates has tolylene diisocyanate (TDI), benzhydryl vulcabond (MDI) and hexamethylene diisocyanate (HMDI) etc.Solidify (being cross-linked) agent and all will be made into dilute solution before in adding polyacrylate(s) pressure sensitive adhesive, slowly add in pressure sensitive adhesive, prevent topical gel.The optimum amount of solidifying agent is relevant with the content of reactive group and the molecular size range of pressure sensitive adhesive in the character of solidifying agent, pressure sensitive adhesive.
Described filler is the color of electrolyte resistance, and color is ground and formed by binder, pigment, dispersion agent, wetting agent and stirring solvent.
The color formula of described electrolyte resistance is: binder 10-15 part, pigment 15-35 part, dispersion agent 2-6 part, wetting agent 2-6 part, solvent 50-65 part.
Described binder is selected the modified polyacrylate class pressure sensitive adhesive of electrolyte resistance; Pigment is selected the pigment dyestuff of Halogen, electrolyte resistance.In addition, pigment also will meet ROHS, and pigment color has yellow, blueness, white, can furnishing distinct colors by these several colors.
Described dispersion agent selected fatty acid class, aliphatic amide type, ester class or its combination.
Described wetting agent has been selected anionic and nonionic surface active agent.Aniorfic surfactant comprises alkyl-sulphate, sulfonate, lipid acid or fatty acid ester vitriol, carboxylic soap class, phosphoric acid ester etc.Nonionic surface active agent comprises polyxyethylated alkylphenol, polyoxyethylene aliphatic alcohol ether, polyoxyethylene polyoxypropylene block copolymer etc.
Described solvent is selected the mixture of toluene, ethyl acetate, alcohols or toluene and ethyl acetate.Described solvent is toluene or ethyl acetate, also or the mixture of toluene and ethyl acetate, plays dilution pressure sensitive adhesive, reduces the solid content of pressure sensitive adhesive, to reach, meets the effect that coating requires.
Described polyacrylate(s) pressure-sensitive adhesive is 200-250 part, and solidifying agent is 3-4 part, and filler is 10-12 part, and solvent is 50-55 part.
Described hardening coat 2 is epoxy resin layer, and the utility model adopts a kind of new solidifying agent aminoresin and tosilate to be used in conjunction with, and can either make epoxy resin reach curing effect, can make again epoxy resin have snappiness.Adhesive tape is processed through hardening coat, and tensile property is good, and moulding is easy, and good with base material sticking power, shrinking percentage is low, and has very outstanding resistance to marring, and high transmission rate and solvent resistance have improved the puncture intensity of base material greatly.Base material is before hardening coat is processed, and puncture intensity probably only has 700kg/mm, and the base material of processing through hardening coat, its puncture intensity can reach 1100kg/mm, has totally improved more than 50%.
Described release layer 4 is the non-silicon parting agent of single-component coating (the non-silicon parting agent of major ingredient single-component), and the non-silicon parting agent of single-component has with basic unit's (base material) and has excellent tack and quick-drying performance.Because polyester film back side corona value is exactly >=42 dyne, so this basic unit does not need to carry out just direct printed back treatment agent of corona treatment again.
The production method of a kind of energy storage, dynamic lithium battery special adhesive adhesive tape, first, polyester film is carried out to two-way stretch processing and carry out that surface corona processing, chemical treatment, mechanical hacking are processed or coating is processed and made more than the positive surface tension of polyester film reaches 42 dyne/cm; Then, the treated polyester film back side is carried on the back to be coated with and process, the non-silicon parting agent of single-component is made into the concentration of 0.5-2% and utilizes press printing at the polyester film back side; Polyester film carries out after the processing of the back side, then follows, and with epoxy resin, at polyester film positive (coated face), carries out hardening coat processing; Then, the sizing agent having prepared is applied on the polyester film front of having carried out hardening coat processing with scraper type coating machine; Finally, through oven dry, rolling, then rewinding, has become sealing tape after cutting.
Described sizing agent forms gluing layer 1 after drying, and sizing agent is prepared by polyacrylate(s) pressure-sensitive adhesive, solidifying agent, filler and solvent, and solidifying agent all will be made into dilute solution before adding in polyacrylate(s) pressure sensitive adhesive, slowly adds in pressure sensitive adhesive.
Claims (7)
1. an energy storage, dynamic lithium battery special adhesive adhesive tape, it is characterized in that: comprise gluing layer, hardening coat, basic unit and release layer that order distributes, described basic unit is polyester film, described hardening coat is epoxy resin layer, hardening coat is coated on the front of basic unit, described release layer is the non-silicon parting agent of single-component coating, and release layer is arranged on the back side of basic unit, and described gluing layer is arranged on hardening coat outside surface.
2. energy storage according to claim 1, dynamic lithium battery special adhesive adhesive tape, is characterized in that: the polyester film of described basic unit for processing through two-way stretch, its thickness is 0.012mm to 0.036mm.
3. energy storage according to claim 1, dynamic lithium battery special adhesive adhesive tape, is characterized in that: the thickness of described basic unit is 0.012mm.
4. energy storage according to claim 1, dynamic lithium battery special adhesive adhesive tape, is characterized in that: the thickness of described basic unit is 0.015mm.
5. energy storage according to claim 1, dynamic lithium battery special adhesive adhesive tape, is characterized in that: the thickness of described basic unit is 0.020mm.
6. energy storage according to claim 1, dynamic lithium battery special adhesive adhesive tape, is characterized in that: the thickness of described basic unit is 0.025mm.
7. energy storage according to claim 1, dynamic lithium battery special adhesive adhesive tape, is characterized in that: the thickness of described basic unit is 0.036mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320433290.XU CN203411500U (en) | 2013-07-22 | 2013-07-22 | Special adhesive tape for energy storage power lithium battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320433290.XU CN203411500U (en) | 2013-07-22 | 2013-07-22 | Special adhesive tape for energy storage power lithium battery |
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| Publication Number | Publication Date |
|---|---|
| CN203411500U true CN203411500U (en) | 2014-01-29 |
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| CN201320433290.XU Expired - Lifetime CN203411500U (en) | 2013-07-22 | 2013-07-22 | Special adhesive tape for energy storage power lithium battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109988516A (en) * | 2018-11-29 | 2019-07-09 | 安徽荣泽科技有限公司 | A kind of manufacture craft of BOPP melt viscosity band |
-
2013
- 2013-07-22 CN CN201320433290.XU patent/CN203411500U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109988516A (en) * | 2018-11-29 | 2019-07-09 | 安徽荣泽科技有限公司 | A kind of manufacture craft of BOPP melt viscosity band |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140129 |