CN110380122A - A kind of gummed paper - Google Patents
A kind of gummed paper Download PDFInfo
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- CN110380122A CN110380122A CN201810326274.8A CN201810326274A CN110380122A CN 110380122 A CN110380122 A CN 110380122A CN 201810326274 A CN201810326274 A CN 201810326274A CN 110380122 A CN110380122 A CN 110380122A
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- adhesive layer
- gummed paper
- base material
- particle
- thickness
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
Abstract
This application discloses a kind of gummed papers, including first base material, the first adhesive layer and the second adhesive layer, the first adhesive layer include particle.Wherein, the first adhesive layer is set between first base material and the second adhesive layer, and the first adhesive layer is contacted with first base material.The gummed paper of the application use multi-layer compound structure, multi-layer compound structure can be improved the adhesion strength of gummed paper, make gummed paper it is not easily to fall off, promoted gummed paper puncture strength.
Description
Technical field
This application involves field of batteries, in particular to a kind of gummed paper and lithium ion battery.
Background technique
Gummed paper in the battery core component of lithium ion battery is mainly the work of fixed collector, cover coating and protection weldering print
With, common gummed paper is blue glue and green glue, and structure includes that one layer of substrate and one layer of adhesive layer, toner are dispersed in adhesive layer,
The adhesion strength for normally resulting in gummed paper declines without being able to satisfy use demand.Substrate provides protective value, by increasing substrate
Thickness promote the puncture strength of gummed paper, but due to being required by battery energy density, the thickness of gummed paper is restricted, and gummed paper is worn
Thorn intensity is unable to satisfy demand.Therefore, under the requirement for guaranteeing battery energy density, further increase the adhesive strength of gummed paper with
Puncture strength becomes more and more important.
Summary of the invention
The application proposes a kind of gummed paper of multi-layer compound structure, and it is excellent which has that sticking strength is high, puncture strength is high
Point.
It include: first base material this application provides a kind of gummed paper；First adhesive layer, first adhesive layer includes particle；
And second adhesive layer；Wherein, first adhesive layer is set between the first base material and second adhesive layer, described
First adhesive layer is contacted with the first base material.
In above-mentioned gummed paper, wherein the gummed paper further includes the second substrate, and it is viscous that second substrate is set to described first
It connects between layer and second adhesive layer.
In above-mentioned gummed paper, wherein the first base material and second substrate respectively include Biaxially oriented polypropylene, gather
One of acid imide, polyethylene terephthalate, polytetrafluoroethylene (PTFE), polyvinyl chloride and polyethylene are a variety of, and described
One substrate with a thickness of 3um-10um, second substrate with a thickness of 3um-10um.
In above-mentioned gummed paper, wherein first adhesive layer and second adhesive layer respectively include acrylate, poly- ammonia
One of ester, rubber and silica gel are a variety of, first adhesive layer with a thickness of 1um-10um, the thickness of second adhesive layer
Degree is in 1um-10um.
In above-mentioned gummed paper, wherein the particle includes one of toner particle, fluorescent powder grain and flash of light powder particles
Or it is a variety of.
In above-mentioned gummed paper, wherein the toner particle includes green cobalt titanium, titanium yellow, titanium chromium palm fibre, titanium white, phenol cyanines indigo plant, lemon
One of lemon Huang and carbon black are a variety of.
In above-mentioned gummed paper, wherein the particle includes at least one of conductive particle and insulated particle.
In above-mentioned gummed paper, wherein the conductive particle includes artificial graphite, natural graphite, in carbonaceous mesophase spherules
It is one or more.
In above-mentioned gummed paper, wherein the insulated particle includes aluminium oxide, boehmite, silica, one in calcium oxide
Kind is a variety of.
In above-mentioned gummed paper, wherein the content of the particle in first adhesive layer be 20%-40%, described
The granularity of grain is 0.5um-4.5um.
The application by setting the first adhesive layer, the second adhesive layer, first base material, the first adhesive layer be located at first base material and
Between second adhesive layer, the second adhesive layer contains particle for realizing the connection of gummed paper and the structure (such as battery core) for attaching gummed paper
The first adhesive layer not with attach gummed paper structure (such as battery core) directly contact so that gummed paper with good sticking strength with wear
Pierce intensity.In addition, gummed paper further includes the second substrate, the second substrate is set between the first adhesive layer and the second adhesive layer, can be with
The further puncture strength for improving gummed paper.
Detailed description of the invention
Fig. 1 is the schematic diagram for indicating the gummed paper of the application multi-layer compound structure；
Fig. 2 is to indicate that the schematic diagram of the lithium ion battery of gummed paper is arranged in the application.
Appended drawing reference:
Gummed paper 1, tab 2, lithium ion battery 3,
First base material 10, first surface 11, the first adhesive layer 20,
Second substrate 30, second surface 31, third surface 32, the second adhesive layer 40, particle 50.
Specific embodiment
The exemplary embodiment of the application is described below in detail, but, these exemplary embodiments can use different sides
Formula is implemented, also, should not be construed as being limited to these embodiments that the application is illustrated.On the contrary, providing these embodiments
Purpose be to disclose the application thorough and complete, and scope of the present application is fully conveyed to the affiliated technology in this field
Personnel.
In the description of the present application, it is to be understood that the orientation or position of the instructions such as term " thickness ", "upper", "lower"
Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the application and simplifies description, without referring to
Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot manage
Solution is the limitation to the application.In addition, define " first ", the feature of " second " can explicitly or implicitly include one or
More this feature of person.In the description of the present application, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present application, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in application.
In order to improve the adhesive strength and puncture strength of gummed paper, this application provides a kind of gummed paper of multi-layer compound structure,
Such as four layers of compound gummed paper.As shown in Figure 1, the gummed paper 1 of the application includes first base material 10, the first adhesive layer 20, the first bonding
Layer 20 includes particle 50 and the second adhesive layer 40；Wherein, the first adhesive layer 20 is set to first base material 10 and the second adhesive layer
Between 40, the first adhesive layer 20 is contacted with first base material 10.Second adhesive layer is for realizing gummed paper and attaches the structure of gummed paper (such as
Battery core) connection, so that gummed paper has good sticking strength.The first adhesive layer containing particle not with attach gummed paper 1 structure
(such as battery core) directly contacts, so that gummed paper has good sticking strength and puncture strength.Simultaneously in the first adhesive layer containing
Grain is to make gummed paper have the function of different (such as containing toner particle, providing equipment or personnel's induction identifies, prevent missing glue
Or more rubberizings).
In some embodiments, the gummed paper of the application further includes the second substrate 30, and the second substrate 30 is set to the first bonding
Between layer 20 and the second adhesive layer 40.The puncture-resistant intensity of gummed paper is mainly provided by first base material and the second substrate, when substrate by
When single layer changes into multilayer, stress when puncture can discharge that (such as elastic deformation can occur for the first adhesive layer, can buffer the first base
Interaction force between material and the second substrate).And first contains particle in adhesive layer, and the first adhesive layer can be improved in particle
Roughness so that between first base material and the second substrate can opposite sliding, while certain mechanical strength can also be provided,
When gummed paper is punctured by external force, the puncture strength of gummed paper can be further improved.
In some embodiments, first base material and the second substrate respectively include Biaxially oriented polypropylene, polyimides, poly- pair
One of ethylene terephthalate, polytetrafluoroethylene (PTFE), polyvinyl chloride and polyethylene are a variety of.When puncture strength is tested, by
There is stretching to substrate in pricker, when puncture strength is greater than the tensile strength of substrate, substrate is the worse for wear.Different electricity can be directed to
The demand of core assembly chooses different types of first base material and the second substrate.First base material with a thickness of 3um-10um, the second base
Material with a thickness of 3um-10um.Thus, it is possible to guarantee first base material thickness and the second substrate thickness zone of reasonableness it
Interior, the thickness so as to guarantee gummed paper while improving the puncture strength of gummed paper and then can expire within zone of reasonableness
The energy density requirement of sufficient battery core component.
In some embodiments, the first adhesive layer and the second adhesive layer respectively include acrylate, polyurethane, rubber and silicon
One of glue is a variety of.Acrylate, polyurethane, rubber, the elastic property of silica gel and deformation nature are good and all have
Certain viscosity can be that the first adhesive layer or the second adhesive layer provide preferable adhesive strength, can also utilize these materials
Impact force between the deformation nature buffering first base material of matter and the second substrate.First adhesive layer with a thickness of 1um-10um,
Two adhesive layers with a thickness of 1um-10um, can be reduced while guaranteeing the adhesive property of the first adhesive layer and the second adhesive layer
The overall thickness of gummed paper, and then can satisfy the energy density requirement of battery core component.
In some embodiments, particle may include toner particle, fluorescent powder grain and flash of light one of powder particles or
It is a variety of.These particles can make the first adhesive layer have appearance color, to be that equipment provides induction mark or is work people
Member's identification label, and then gummed paper missing or the case where pasting can be prevented more.Wherein, toner particle includes green cobalt titanium, titanium yellow, titanium
One of chromium palm fibre, titanium white, phenol cyanines indigo plant, lemon yellow and carbon black are a variety of.Different types of toner is adulterated in the first adhesive layer
Particle can make the first adhesive layer have different colors, and then can provide multiple choices for the color of gummed paper, in order to
Distinguish the gummed paper of different type, different bonding position and different role.
In some embodiments, particle includes at least one of conductive particle and insulated particle.Conductive particle and insulation
Particle can make the first adhesive layer have different characteristics so that gummed paper have the function of it is different.Wherein, conductive particle
Including one of artificial graphite, natural graphite, carbonaceous mesophase spherules or a variety of.Conductive particle has good electric conductivity, makes
Obtaining gummed paper has certain electric conductivity, while can be realized certain bonding effect again.In some embodiments of the present application, absolutely
Edge particle includes one of aluminium oxide, boehmite, silica, calcium oxide or a variety of.Aluminium oxide and boehmite all have good
Good mechanical strength, increasing insulated particle in gummed paper can be enhanced the insulating capacity and puncture strength of gummed paper, while again can
Realize certain bonding effect.
In some embodiments, the content of the particle in the first adhesive layer is 20%-40%, and the granularity of particle is 0.5um-
4.5um。
As shown in Figure 1, in some embodiments, first base material 10 may include first surface 11, first surface 11 is close
First adhesive layer 20.Second substrate 30 includes second surface 31 and third surface 32, and second surface 31 and third surface 32 are opposite,
Second surface 31 is far from the second adhesive layer 40, and third surface 32 is close to the second adhesive layer 40.To first surface, second surface,
Three surfaces carry out sided corona treatment or plasma treatment, increase substrate surface can, can be improved first base material, the first adhesive layer,
The mutual bonding stability of second substrate, the second adhesive layer.
Here, the application range of multi-layer compound structure gummed paper is not especially limited.For example, according to some of the application
Embodiment can be used for welding position, anode and cathode protective glue, collector ending glue, electricity as shown in Fig. 2, can be used in battery core
Core print tail portion is around glue etc..
It is illustrated below with reference to specific embodiment, to better understand the application.
Embodiment 1
Sided corona treatment is carried out to first surface 11, second surface 31 and third surface 32, is evenly dispersed in cobalt titanium is green
In first adhesive layer (acrylate), then by the way of scraper blade coating, it is uniformly coated on first base material (poly- terephthaldehyde
Sour glycol ester PET) surface roll compound second substrate (poly terephthalic acid second after 120 DEG C, the continuous tunnel furnace of 2min
Diol ester PET), rolling pressure 20kg.The second adhesive layer (acrylate) is coated on second using the method that scraper scratches
Substrate surface, the rewinding after 120 DEG C, the continuous tunnel furnace of 2min, cures 2 hours at 60 DEG C.By first base material, the first bonding
Layer, the second substrate, the second adhesive layer are combined with each other to obtain gummed paper, and wherein first base material is with a thickness of 6um, the first thickness of adhibited layer
For 1.5um, the second base material thickness is 6um, and the second thickness of adhibited layer is 2.5um, and the green content in the first adhesive layer of cobalt titanium is
20%, granularity 1um.
Embodiment 2
It is identical as the preparation method of embodiment 1, the difference is that first surface 11, second surface 31 and third surface 32 carry out
Plasma treatment, first base material are polyimides (PI), wherein the green content in the first adhesive layer of cobalt titanium is 20%, and granularity is
1um。
Embodiment 3
Identical as the preparation method of embodiment 1, first surface 11, second surface 31 and third surface 32 carry out at plasma
Reason, unlike first base material be Biaxially oriented polypropylene (BOPP), wherein the green content in the first adhesive layer of cobalt titanium is
20%, granularity 1um.
Embodiment 4
It is identical as the preparation method of embodiment 1, the difference is that the first adhesive layer is rubber, wherein cobalt titanium is green viscous first
Connecing content in layer is 25%, granularity 1.5um.
Embodiment 5
It is identical as the preparation method of embodiment 1, the difference is that the first adhesive layer is acrylate and rubber, wherein cobalt titanium
The green content in the first adhesive layer is 25%, granularity 1.5um.
Embodiment 6
It is identical as the preparation method of embodiment 1, unlike particle be that cobalt titanium is green and titanium yellow, wherein cobalt titanium is green and titanium
Nickel yellow content in the first adhesive layer is 40%, granularity 1.8um.
Embodiment 7
It is identical as the preparation method of embodiment 1, the difference is that particle is artificial graphite, wherein artificial graphite is viscous first
Connecing content in layer is 40%, granularity 1.8um.
Embodiment 8
It is identical as the preparation method of embodiment 1, the difference is that particle is artificial graphite and carbonaceous mesophase spherules, wherein people
Making graphite and the carbonaceous mesophase spherules content in the first adhesive layer is 40%, granularity 1.8um.
Embodiment 9
It is identical as the preparation method of embodiment 1, the difference is that particle is aluminium oxide, wherein aluminium oxide is in the first adhesive layer
Middle content is 40%, granularity 1.8um.
Embodiment 10
It is identical as the preparation method of embodiment 1, unlike particle be aluminium oxide and boehmite, wherein aluminium oxide and vigorous
Nurse stone content in the first adhesive layer is 40%, granularity 1.8um.
Embodiment 11
It is identical as the preparation method of embodiment 1, the difference is that the second adhesive layer is rubber, wherein cobalt titanium is green viscous first
Connecing content in layer is 20%, granularity 0.5um.
Embodiment 12
It is identical as the preparation method of embodiment 1, the difference is that the second adhesive layer is acrylate and rubber, wherein cobalt titanium
The green content in the first adhesive layer is 20%, granularity 0.5um.
Embodiment 13
It is identical as the preparation method of embodiment 1, unlike the second substrate be polyimides (PI), wherein cobalt titanium it is green
Content is 20% in first adhesive layer, granularity 1um.
Embodiment 14
It is identical as the preparation method of embodiment 1, the difference is that the second substrate is Biaxially oriented polypropylene (BOPP), wherein
The green content in the first adhesive layer of cobalt titanium is 20%, granularity 1um.
Embodiment 15
It is identical as the preparation method of embodiment 1, the difference is that first base material is with a thickness of 3um, wherein cobalt titanium is green viscous first
Connecing content in layer is 20%, granularity 1um.
Embodiment 16
It is identical as the preparation method of embodiment 1, the difference is that first base material is with a thickness of 7um, wherein cobalt titanium is green viscous first
Connecing content in layer is 20%, granularity 1um.
Embodiment 17
It is identical as the preparation method of embodiment 1, the difference is that first base material is with a thickness of 9um, wherein cobalt titanium is green viscous first
Connecing content in layer is 20%, granularity 1um.
Embodiment 18
It is identical as the preparation method of embodiment 1, the difference is that first base material is with a thickness of 10um, wherein cobalt titanium is green first
Content is 20% in adhesive layer, granularity 1um.
Embodiment 19
It is identical as the preparation method of embodiment 1, the difference is that the second base material thickness is 3um, wherein cobalt titanium is green viscous first
Connecing content in layer is 20%, granularity 1um.
Embodiment 20
It is identical as the preparation method of embodiment 1, the difference is that the second base material thickness is 7um, wherein cobalt titanium is green viscous first
Connecing content in layer is 20%, granularity 1um.
Embodiment 21
It is identical as the preparation method of embodiment 1, the difference is that the second base material thickness is 9um, wherein cobalt titanium is green viscous first
Connecing content in layer is 20%, granularity 1um.
Embodiment 22
It is identical as the preparation method of embodiment 1, the difference is that the second base material thickness is 10um, wherein cobalt titanium is green first
Content is 20% in adhesive layer, granularity 1um.
Embodiment 23
It is identical as the preparation method of embodiment 1, the difference is that the first thickness of adhibited layer is 1um, wherein cobalt titanium is green first
Content is 40% in adhesive layer, granularity 1um.
Embodiment 24
It is identical as the preparation method of embodiment 1, unlike the first thickness of adhibited layer be 2.5um, wherein cobalt titanium is green the
Content is 20% in one adhesive layer, granularity 1um.
Embodiment 25
It is identical as the preparation method of embodiment 1, the difference is that the first thickness of adhibited layer is 5um, wherein cobalt titanium is green first
Content is 20% in adhesive layer, granularity 3um.
Embodiment 26
It is identical as the preparation method of embodiment 1, unlike the first thickness of adhibited layer be 7.5um, wherein cobalt titanium is green the
Content is 20% in one adhesive layer, granularity 4.3um.
Embodiment 27
It is identical as the preparation method of embodiment 1, unlike the first thickness of adhibited layer be 10um, wherein cobalt titanium is green the
Content is 20% in one adhesive layer, granularity 4um.
Embodiment 28
It is identical as the preparation method of embodiment 1, the difference is that the second thickness of adhibited layer is 1um, wherein cobalt titanium is green first
Content is 20% in adhesive layer, granularity 0.5um.
Embodiment 29
It is identical as the preparation method of embodiment 1, unlike the second thickness of adhibited layer be 1.5um, wherein cobalt titanium is green the
Content is 30% in one adhesive layer, granularity 1um.
Embodiment 30
It is identical as the preparation method of embodiment 1, the difference is that the second thickness of adhibited layer is 5um, wherein cobalt titanium is green first
Content is 20% in adhesive layer, granularity 1um.
Embodiment 31
It is identical as the preparation method of embodiment 1, unlike the second thickness of adhibited layer be 7.5um, wherein cobalt titanium is green the
Content is 30% in one adhesive layer, granularity 1um.
Embodiment 32
It is identical as the preparation method of embodiment 1, unlike the second thickness of adhibited layer be 10um, wherein cobalt titanium is green the
Content is 30% in one adhesive layer, granularity 1um.
Comparative example 1
Sided corona treatment is carried out to the surface of first base material (polyethylene terephtalate), by the first adhesive layer (third
Olefin(e) acid ester) by the way of scraper blade coating, it is uniformly coated on first base material surface, it is multiple after 120 DEG C, the continuous tunnel furnace of 2min
Volume, cures 2 hours at 60 DEG C.It is combined with each other first base material, the first adhesive layer to obtain gummed paper.Wherein, the first adhesive layer
With a thickness of 4um.First base material is with a thickness of 12um.
Comparative example 2
Sided corona treatment is carried out to the surface of first base material (polyethylene terephtalate), by the first adhesive layer (third
Olefin(e) acid ester) by the way of scraper blade coating, it is uniformly coated on first base material surface, after 120 DEG C, the continuous tunnel furnace of 2min,
By the second adhesive layer (acrylate) by the way of scraper blade coating, it is uniformly coated on another surface of the first adhesive layer, is passed through
It crosses 120 DEG C, rewinding after the continuous tunnel furnace of 2min, is cured 2 hours at 60 DEG C.By first base material, the first adhesive layer, the second adhesive layer
It is combined with each other to obtain gummed paper.Wherein, for first base material with a thickness of 12um, the first thickness of adhibited layer is 1.5um, the second bonding thickness
Degree is 2.5um.
Comparative example 3
It is identical as the preparation method of comparative example 1, the difference is that green containing cobalt titanium in the first adhesive layer, content 20%, grain
Degree is 1um.
The performance test process of gummed paper will be illustrated next.
(1) the puncture strength test of gummed paper
Gummed paper is cut into the circular specimen that diameter is 100mm, gummed paper sample, which is fixed on high-speed rail puller system internal diameter, is
It the use of diameter is then 1.0mm, spherical tips radius is the steel needle of 0.5mm, with the constant of 50mm/min in the fixed ring of 50mm
Gummed paper sample is pierced on rate top, reads the numerical value of puller system when steel needle penetrates gummed paper sample, which is puncture strength.
(2) the adhesive strength test of gummed paper
By long 125mm, the gummed paper of wide 25mm is attached to long 125mm, wide 50mm, on the stainless-steel sheet of thick 1.1mm, uses
The rubber roller that weight is 2000g rolls 3 times, and 20min~40min is stood in the environment of 23 DEG C of temperature, humidity 50%, will be stainless
Steel Interal fixation is on puller system, and with the constant rate of speed of 300mm/min, the clamp distance of 40mm stretches gummed paper sample, records glue
The numerical value of puller system, is converted into the adhesion strength that N/mm is gummed paper for above-mentioned numerical value when paper is broken.
By embodiment 1-3 and comparative example 1-3 it is found that by the way that the first adhesive layer is set to first base material and the second adhesive layer
Between, particle is dispersed in the first adhesive layer, the puncture strength of gummed paper and adhesive strength are significantly improved.When other
Condition is identical, and when first base material type difference, first base material tensile strength is different, and puncture strength is greater than first base material when needle pierces
Tensile strength, substrate can just be the worse for wear, thus cause gummed paper puncture strength different.
By embodiment 1 from embodiment 4-5 it is found that when other conditions are identical, gummed paper is worn when the first adhesive layer type is different
It is different to pierce intensity, this is because the adhesive strength of gummed paper depends on the second adhesive layer, therefore the type change pair of the first adhesive layer
The adhesive strength of gummed paper does not make significant difference.First adhesive layer is between first base material and the second substrate, when being punctured, the
Elastic deformation can occur for one substrate, these deformation can buffer the impact force between first base material and the second substrate, absorb part
Puncture force, therefore when the first adhesive layer type difference, deformation nature is different, and the impact force that can be buffered is of different sizes, gummed paper
Puncture strength it is different.
By embodiment 6-10 from embodiment 1 it is found that when other conditions are identical, the puncture of gummed paper is strong when grain type is different
Degree is different.This is because the adhesive strength of gummed paper depends on the second adhesive layer, therefore the change of particle type is to the bonding of gummed paper
Intensity does not make significant difference.The roughness of the first adhesive layer can be improved in the presence of particle so that first base material and the second substrate it
Between can opposite sliding, while certain mechanical strength can also be provided, when a grain type difference, the machinery being capable of providing is strong
Degree is different, and gummed paper adhesive strength is constant, and puncture strength is different.
By embodiment 1 from embodiment 11-12 it is found that when the second adhesive layer type it is different, when other conditions are identical, gummed paper
Adhesive strength difference is obvious, and puncture strength is almost without significant changes, this is because the second adhesive layer directly with attach gummed paper
Structure (such as battery core) connection, therefore the type of the second adhesive layer, decide the sticking strength of gummed paper.
By embodiment 13-14 from embodiment 1 it is found that when other conditions are identical, gummed paper is worn when the second substrate type is different
It is different to pierce intensity.This is because the second substrate and first base material provide protective value, when puncture strength is greater than substrate tensile strength
Shi Jicai is the worse for wear, and when being pierced by needle, the second substrate type is different, and the tensile strength of the second substrate is different, therefore gummed paper
Puncture strength is different.
By embodiment 15-18 from embodiment 1 it is found that when first base material thickness is different, when other conditions are identical, with first
The increase of base material thickness, pierce through first base material required for puncture force it is bigger, gummed paper puncture strength is higher.
By embodiment 19-22 from embodiment 1 it is found that when the second base material thickness is different, when other conditions are identical, with second
The increase of base material thickness, pierce through the second substrate required for puncture force it is bigger, gummed paper puncture strength is higher.
By embodiment 23-27 from embodiment 1 it is found that when the first thickness of adhibited layer is different, when other conditions are identical, with the
The increase of one thickness of adhibited layer, pierce through the first adhesive layer required for puncture force it is bigger, the puncture strength of gummed paper significantly increases, glue
Connecing intensity has a degree of increase.
By embodiment 28-32 from embodiment 1 it is found that when the second thickness of adhibited layer is different, when other conditions are identical, with the
The increase of two thickness of adhibited layer, pierces through that puncture force required for the second substrate is bigger, and the puncture strength of gummed paper increases.When second viscous
Thickness degree is connect not meanwhile, it is capable to come into full contact with the structure (such as battery core) for attaching gummed paper, the adhesive strength of gummed paper dramatically increases.
It will be understood by those skilled in the art that above embodiments are only exemplary embodiments, without departing substantially from spirit herein
In the case where range, a variety of variations can be carried out, replaced and changed.
Claims (11)
1. a kind of gummed paper, comprising:
First base material；
First adhesive layer, first adhesive layer includes particle；And
Second adhesive layer；
Wherein, first adhesive layer is set between the first base material and second adhesive layer, first adhesive layer
It is contacted with the first base material.
2. gummed paper according to claim 1, wherein further include the second substrate, second substrate is set to described first
Between adhesive layer and second adhesive layer.
3. gummed paper according to claim 2, wherein the first base material and second substrate respectively include biaxial tension
One of polypropylene, polyimides, polyethylene terephthalate, polytetrafluoroethylene (PTFE), polyvinyl chloride and polyethylene are more
Kind, the first base material with a thickness of 3um-10um, second substrate with a thickness of 3um-10um.
4. gummed paper according to claim 1, wherein first adhesive layer and second adhesive layer respectively include propylene
One of acid esters, polyurethane, rubber and silica gel are a variety of, the thickness range of first adhesive layer between 1um-10um,
Second adhesive layer with a thickness of 1um-10um.
5. gummed paper according to claim 1, wherein the particle includes toner particle, fluorescent powder grain and flashlight powder
One of grain is a variety of.
6. gummed paper according to claim 5, wherein the toner particle include green cobalt titanium, titanium yellow, titanium chromium palm fibre, titanium white,
One of phenol cyanines indigo plant, lemon yellow and carbon black are a variety of.
7. gummed paper according to claim 1, wherein the particle includes at least one in conductive particle and insulated particle
Kind.
8. gummed paper according to claim 7, wherein the conductive particle includes artificial graphite, natural graphite, mesocarbon
One of microballoon is a variety of.
9. gummed paper according to claim 7, wherein the insulated particle includes aluminium oxide, boehmite, silica, oxygen
Change one of calcium or a variety of.
10. gummed paper according to claim 1, wherein the content of the particle in first adhesive layer is 20%-
40%, the granularity of the particle is 0.5um-4.5um.
11. a kind of lithium ion battery, including gummed paper described according to claim 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810326274.8A CN110380122A (en) | 2018-04-12 | 2018-04-12 | A kind of gummed paper |
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| CN201810326274.8A CN110380122A (en) | 2018-04-12 | 2018-04-12 | A kind of gummed paper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113067060A (en) * | 2021-03-17 | 2021-07-02 | 宁德新能源科技有限公司 | Battery and consumer |
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Application publication date: 20191025 |