CN108593210A - A kind of insulating surfaces pad and its preparation method and application - Google Patents
A kind of insulating surfaces pad and its preparation method and application Download PDFInfo
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- CN108593210A CN108593210A CN201711490322.9A CN201711490322A CN108593210A CN 108593210 A CN108593210 A CN 108593210A CN 201711490322 A CN201711490322 A CN 201711490322A CN 108593210 A CN108593210 A CN 108593210A
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- indicator
- adsorbent
- insulating surfaces
- pad
- cushion material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
Abstract
The present invention provides a kind of insulating surfaces pads and its preparation method and application.The insulating surfaces pad includes the modification face pad formed by cushion material containing hole face and the adsorbent in the hole of cushion material containing hole face, and the indicator on surface is padded positioned at the modified face.The preparation method of the insulating surfaces pad includes：Cushion material containing hole face is soaked in the mixed solution containing indicator, adsorbent and organic solvent, it is mechanical-moulded to the progress of cushion material containing hole face after immersion to obtain the insulating surfaces pad.The insulating surfaces pad is used for the inspection of battery leakage.The case where the problem of irregular colour or open defect is not present in insulating surfaces pad provided by the invention, and indicator is fixed very secured on insulating surfaces pad, not easily to fall off, other detection instruments are not necessarily to when for detecting battery leakage, and detection efficiency height is not in missing inspection；The preparation method of the insulating surfaces pad is easy to operate, and flow excessively is short, is easy to carry out industrialized production.
Description
Technical field
The invention belongs to energy storage fields, and in particular to a kind of insulating surfaces pad and its preparation method and application.
Background technology
Battery is a kind of widely used energy storage device, and wherein lithium battery is particularly noticeable.Lithium battery is one kind by lithium
Metal or lithium alloy are negative material, the battery using non-aqueous electrolytic solution.Lithium metal battery is earliest by Gilbert within 1912
N.Lewis is proposed and is studied.When the 1970s, M.S.Whittingham is proposed and the lithium ion battery that begins one's study.Due to
The chemical characteristic of lithium metal is very active so that processing, preservation, the use of lithium metal, it is very high to environmental requirement.So lithium
Battery is not applied for a long time.With the development of science and technology, present lithium battery has become mainstream.
However the method that lithium battery examines leakage, still observation battery core positive terminal whether there is current mainstream by visual observation
Liquid is used in combination pH test paper to rub, and checks whether that discoloration, discoloration then judge battery core leakage.This method examine Leak examination efficiency compared with
It is low, and be easy to fail to judge, causing leakage battery core to be mixed into qualified battery core makes qualified battery core be contaminated, corrode, and causes bigger not
Good and security risk.104614128 A of CN disclose a kind of lithium battery apparatus for testing weeping, including detection cylinder, the detection cylinder
One end open, the other end are sealedly connected with dismountable pedestal, liquid seal trough are carried at the pedestal and the cooperation of detection cylinder.This hair
Bright lithium battery apparatus for testing weeping, the detachable structure for detecting cylinder and pedestal facilitate the insertion of mesuring battary and take out and fill
The disassembly, cleaning set；The setting of gasket can further improve the seal of device；In use, the detection liquid contained in pond did not had
Mesuring battary is simultaneously used for device airtight test with liquid seal trough cooperation.The disadvantages of this solution is detection device complexity, detection side
Method is cumbersome, is unfavorable for commercial Application.
Therefore, the carry out lithium battery leakage detection that a kind of new product enables Cheap highly effective is developed, it is real to improve lithium battery
Border production process Leak examination working efficiency and slight leakage battery core missing inspection is avoided, this has this field important meaning.
Invention content
Aiming at the above shortcomings existing in the prior art, the purpose of the present invention is to provide a kind of insulating surfaces pad and its preparations
Method and purposes, this insulating surfaces pad have battery leakage coloring function, and simple in structure, and preparation method flow is short, at low cost,
Can be used for detect battery whether leakage.
In order to achieve the above object, the present invention uses following technical scheme：
In a first aspect, the present invention provides a kind of insulating surfaces pad, the insulating surfaces pad includes by containing hole face cushion material and being located at
The modification face pad that adsorbent in the hole of cushion material containing hole face is formed, and the indicator positioned at the modified face pad surface.
This insulating surfaces mat structure provided by the invention is simple, the phase interworking of cushion material containing hole face, adsorbent and indicator
Close, adsorbent firmly adsorbs indicator, and adsorbent be fixed on it is not easily to fall off in the hole of the cushion material containing hole face, in this way
Structure indicator is more evenly distributed on the insulating surfaces pad, insulating surfaces will not be allowed to get existing irregular colour discard
Or the problem of open defect, and indicator is fixed very secured on insulating surfaces pad, and it is not easily to fall off；The finger used in the present invention
Show that agent will appear color change after the leakage for encountering battery.Insulating surfaces pad provided by the invention can not only play common insulating surfaces
The insulation function of pad, also have battery leakage coloring function, can long-term monitoring lithium battery whether leakage.
It is used as currently preferred technical solution below, but not as the limitation to technical solution provided by the invention, leads to
Following preferred technical solution is crossed, can preferably reach and realize the technical purpose and advantageous effect of the present invention.
As currently preferred technical solution, the insulating surfaces pad is by being modified face pad and being located at the modified face pad table
The indicator in face forms, and the modified face pad is by cushion material containing hole face and the absorption dosage form in the hole of cushion material containing hole face
At.That is, insulating surfaces pad is only with the modification formed by cushion material containing hole face and the adsorbent in the hole of cushion material containing hole face
Face is padded, and pads the indicator on surface positioned at the modified face to form, and does not contain other materials, under these conditions, described
Insulating surfaces pad can reach better indicator fixed effect, have more preferably detectability.
Preferably, the aperture of the cushion material containing hole face be 0.4 μm -3.1 μm, such as 0.4 μm, 0.8 μm, 1 μm, 1.5 μm,
2 μm, 2.5 μm, 3 μm or 3.1 μm etc., it is not limited to cited numerical value, other interior unrequited numerical value of the numberical range
It is equally applicable.
Preferably, the cushion material containing hole face include in polypropylene, non-woven fabrics or paper material any one or at least
Two kinds of combination, it is typical but be non-limiting combination and have：The group of the combination of polypropylene and non-woven fabrics, polypropylene and paper material
It closes, the combination etc. of non-woven fabrics and paper material.
Preferably, the adsorbent includes resin sorbent, preferably silicones adsorbent.Use the good of resin sorbent
Place, which is resin sorbent, has high adhesive ability, colored indicator absorption can be made uniform, wherein silicones adsorbent has
Better effect.
Preferably, the grain size of the adsorbent is 80nm-270nm, such as 80nm, 100nm, 150nm, 200nm, 250nm
Or 270nm etc., it is not limited to cited numerical value, other interior unrequited numerical value of the numberical range are equally applicable.
Preferably, the indicator includes coordination indicator and/or oxidation-reduction indicator.The coordination indicator and/
Or oxidation-reduction indicator refers to：Can be coordination indicator, or oxidation-reduction indicator can also be coordination instruction
The combination of agent and oxidation-reduction indicator.
Preferably, the indicator include in methyl red, bromocresol green, thymol blue or phosphomolybdic acid any one or extremely
Few two kinds of combination, it is typical but be non-limiting combination and have：The combination of methyl red and bromocresol green, methyl red and thymol blue
Combination, the combination of bromocresol green and thymol blue, the combination of thymol blue and phosphomolybdic acid, in methyl red, bromocresol green and hundred
The combination etc. of phenol indigo plant.
Preferably, the indicator be methyl red, bromocresol green and thymol blue mixture.Using methyl red, bromine first
The green this preferred indicator of mixture with thymol blue of phenol, which is advantageous in that, can improve indicator developing sensitivity, exclude it
He interferes color developing effect at factor.
Second aspect, a kind of preparation method of the pad of insulating surfaces as described in relation to the first aspect of the present invention, the method includes following
Step：
Cushion material containing hole face is soaked in the mixed solution containing indicator, adsorbent and organic solvent, after immersion
Cushion material containing hole face carry out mechanical-moulded obtaining the insulating surfaces pad.
The preparation method of the present invention utilizes the mutual cooperation of cushion material containing hole face, adsorbent and indicator so that indicator
With the insulating surfaces pad attachment more securely, meet Leak examination needs.In addition, this method is easy to operate, flow excessively is short, easily
In progress industrialized production.
As currently preferred technical solution, the aperture of the cushion material containing hole face is 0.4 μm -3.1 μm, such as 0.4 μ
M, 0.8 μm, 1 μm, 1.5 μm, 2 μm, 2.5 μm, 3 μm or 3.1 μm etc., it is not limited to cited numerical value, the numberical range
Other interior unrequited numerical value are equally applicable.
Preferably, the cushion material containing hole face include in polypropylene, non-woven fabrics or paper material any one or at least
Two kinds of combination, it is typical but be non-limiting combination and have：The group of the combination of polypropylene and non-woven fabrics, polypropylene and paper material
It closes, the combination etc. of non-woven fabrics and paper material.
As currently preferred technical solution, in the mixed solution, a concentration of 6.5wt%- of indicator
14.2wt%, such as 6.5wt%, 7wt%, 9wt%, 11wt%, 13wt% or 14.2wt% etc., it is not limited to cited
Numerical value, other unrequited numerical value are equally applicable in the numberical range.
Preferably, the indicator includes coordination indicator and/or oxidation-reduction indicator.The coordination indicator and/
Or oxidation-reduction indicator refers to：Can be coordination indicator, or oxidation-reduction indicator can also be coordination instruction
The combination of agent and oxidation-reduction indicator.
Preferably, the indicator include in methyl red, bromocresol green, thymol blue or phosphomolybdic acid any one or extremely
Few two kinds of combination, it is typical but be non-limiting combination and have：The combination of methyl red and bromocresol green, methyl red and thymol blue
Combination, the combination of bromocresol green and thymol blue, the combination of thymol blue and phosphomolybdic acid, in methyl red, bromocresol green and hundred
The combination etc. of phenol indigo plant.
Preferably, the indicator be methyl red, bromocresol green and thymol blue mixture.
Preferably, in the mixture of the methyl red, bromocresol green and thymol blue, the volume fraction of methyl red is
25%-45%, such as 25%, 30%, 35%, 40% or 45% etc., it is not limited to cited numerical value, the numberical range
Other interior unrequited numerical value are equally applicable.
Preferably, in the mixture of the methyl red, bromocresol green and thymol blue, the volume fraction of bromocresol green is
10%-30%, such as 10%, 15%, 20%, 25% or 30% etc., it is not limited to cited numerical value, the numberical range
Other interior unrequited numerical value are equally applicable.
Preferably, in the mixture of the methyl red, bromocresol green and thymol blue, the volume fraction of thymol blue is
23%-47%, such as 23%, 25%, 30%, 35%, 40%, 45% or 47% etc., it is not limited to cited numerical value,
Other unrequited numerical value are equally applicable in the numberical range.
As currently preferred technical solution, in the mixed solution, the mass fraction of adsorbent is 1wt%-
20wt%, such as 1wt%, 2wt%, 4wt%, 6wt%, 10wt%, 15wt% or 20wt% etc., it is not limited to cited
Numerical value, other unrequited numerical value are equally applicable in the numberical range, preferably 2wt%-6wt%.
Preferably, the adsorbent includes resin sorbent, preferably silicones adsorbent.
Preferably, the grain size of the adsorbent be 80nm-270nm, 80nm, 100nm, 120nm, 140nm, 160nm,
180nm, 200nm, 220nm, 250nm or 270nm etc., it is not limited to cited numerical value, in the numberical range, other are not
The numerical value enumerated is equally applicable.
As currently preferred technical solution, the organic solvent be ethyl acetate, in ethylene glycol any one or
At least two combination.
Preferably, the organic solvent is the mixture of ethyl acetate and ethylene glycol.
Preferably, the volume ratio of the ethyl acetate and ethylene glycol is 1:9-2:7, such as 1:9、1:8、1:7 or 2:7 etc.,
It is not limited to cited numerical value, other interior unrequited numerical value of the numberical range are equally applicable, preferably 2:8.
As currently preferred technical solution, time of the immersion is 5min-24h, such as 5min, 15min,
0.5h, 1h, 6h, 12h, 18h or for 24 hours etc., it is not limited to cited numerical value, other unrequited numbers in the numberical range
It is worth equally applicable.
Preferably, when the cushion material containing hole face be polypropylene when, the soaking time be 1h-24h, such as 1h, 6h,
12h, 18h or for 24 hours etc., it is not limited to cited numerical value, other unrequited numerical value are equally applicable in the numberical range.
Preferably, when the cushion material containing hole face be non-woven fabrics when, the soaking time be 0.5h-24h, such as 0.5h,
1h, 6h, 12h, 18h or for 24 hours etc., it is not limited to cited numerical value, other unrequited numerical value are same in the numberical range
Sample is applicable in.
Preferably, when the cushion material containing hole face is paper material, the time of the immersion is 5min-2h, such as
5min, 15min, 0.5h, 1h or 2h etc., it is not limited to cited numerical value, other interior unrequited numbers of the numberical range
It is worth equally applicable.
Preferably, the temperature of the immersion is 30 DEG C -55 DEG C, such as 30 DEG C, 35 DEG C, 40 DEG C, 45 DEG C, 50 DEG C or 55 DEG C
Deng it is not limited to cited numerical value, other unrequited numerical value are equally applicable in the numberical range.
Preferably, the method further includes：After steeping with it is mechanical-moulded before, to the cushion material containing hole face after immersion into
Row drying and cooling.
Preferably, the drying carries out in an oven.
Preferably, described mechanical-moulded for punch forming.
As the further preferred technical solution of the method for the invention, the described method comprises the following steps：
Cushion material containing hole face is soaked in the mixed solution being mixed to get by indicator, adsorbent and organic solvent,
After impregnating 5min-24h at a temperature of 30 DEG C -55 DEG C, the cushion material containing hole face after immersion is dried and cooled down, is then rushed
It is molded to obtain the insulating surfaces pad；
Wherein, the indicator be methyl red, bromocresol green and thymol blue mixture, the methyl red, bromine cresols
In green and thymol blue mixture, the volume fraction of methyl red is 25%-45%, and the volume fraction of bromocresol green is 10%-
30%, the volume fraction of thymol blue is 23%-47%；In the mixed solution, a concentration of 6.5wt%- of indicator
14.2wt%；
The adsorbent is silicones adsorbent, and the grain size of the adsorbent is 80nm-270nm, in the mixed solution,
The mass fraction of adsorbent is 2wt%-6wt%；
The organic solvent is the mixture of ethyl acetate and ethylene glycol, and the volume ratio of the ethyl acetate and ethylene glycol is
2:8。
The third aspect, the present invention provide a kind of purposes of insulating surfaces pad as described in relation to the first aspect, and the insulating surfaces pad is used
In the inspection of battery leakage.Color change can occur after touching battery leakage for the insulating surfaces pad, without other detections
Tool i.e. can determine battery whether leakage, and because the insulating surfaces pad be not present irregular colour or open defect the problem of, institute
With will not missing inspection.Insulating surfaces pad provided by the invention is particularly suitable for the leakage detection of lithium battery.
Compared with the prior art, the present invention has the advantages that：
(1) the problem of irregular colour or open defect is not present in insulating surfaces pad provided by the invention, and indicator is exhausted
Edge face pad is upper fixed very secured, not easily to fall off, easy to operate when for detecting battery leakage, directly displays leakage prompt face
The case where color is not necessarily to other detection instruments, and detection efficiency height is not in missing inspection；
(2) it is more secured so that indicator adheres to the insulating surfaces pad for preparation method provided by the invention, meets leakage
Liquid, which is examined, to be needed, and easy to operate, and flow excessively is short, is easy to carry out industrialized production.
Description of the drawings
Fig. 1 is the appearance diagram for the cylindrical battery insulating surfaces pad that the embodiment of the present invention 1 is prepared；
Fig. 2 is the appearance diagram for the rectangular cell insulating surfaces pad that the embodiment of the present invention 2 is prepared.
Specific implementation mode
For the present invention is better described, it is easy to understand technical scheme of the present invention, below further specifically to the present invention
It is bright.But following embodiments is only the simple example of the present invention, does not represent or limit the scope of the present invention, this
Invention protection domain is subject to claims.
Embodiment 1
A kind of preparation method of insulating surfaces pad is present embodiments provided, specific method is：
It is that 0.4 μm -1.0 μm of polypropylene is soaked in and is mixed to get by indicator, adsorbent and organic solvent by aperture
In mixed solution, after impregnating 5h at a temperature of 45 DEG C, the polypropylene after immersion is dried and cooled down, is then struck out
Type obtains the insulating surfaces pad suitable for cylindrical battery.
Wherein, the indicator be methyl red, bromocresol green and thymol blue mixture, the methyl red, bromine cresols
In green and thymol blue mixture, the volume fraction of methyl red is 45%, and the volume fraction of bromocresol green is 30%, thymol
Blue volume fraction is 25%, in the mixed solution, a concentration of 10.0wt% of indicator；
The adsorbent is silicones adsorbent, and the grain size of the adsorbent is 80nm~100nm, the mixed solution
In, the mass fraction of adsorbent is 2wt%；
The organic solvent is the mixture of ethyl acetate and ethylene glycol, and the volume ratio of the ethyl acetate and ethylene glycol is
2:8。
For the appearance for the insulating surfaces pad that the present embodiment obtains as shown in Figure 1, face pad is annular, face pad is intermediate hole, Ke Yitao
The anode protrusion for entering cylindrical battery can make face pad become aubergine from yellow green, play leakage if electrolyte leakage occurs in battery
Liquid detection acts on.
The problem of irregular colour or open defect is not present in the insulating surfaces pad that the present embodiment obtains, and is not in the feelings of missing inspection
Condition.
Embodiment 2
A kind of preparation method of insulating surfaces pad is present embodiments provided, specific method is：
It is that 2.0 μm -3.1 μm of polypropylene is soaked in and is mixed to get by indicator, adsorbent and organic solvent by aperture
In mixed solution, after impregnating 1h at a temperature of 30 DEG C, the polypropylene after immersion is dried and cooled down, is then struck out
Type obtains the insulating surfaces pad suitable for rectangular cell.
Wherein, the indicator be methyl red, bromocresol green and thymol blue mixture, the methyl red, bromine cresols
In green and thymol blue mixture, the volume fraction of methyl red is 25%, and the volume fraction of bromocresol green is 28%, thymol
Blue volume fraction is 47%；In the mixed solution, a concentration of 6.5wt% of indicator；
The adsorbent is silicones adsorbent, and the grain size of the adsorbent is 200nm-270nm, the mixed solution
In, the mass fraction of adsorbent is 1wt%；
The organic solvent is the mixture of ethyl acetate and ethylene glycol, and the volume ratio of the ethyl acetate and ethylene glycol is
1:9。
As shown in Fig. 2, face pad is the rectangle of two circular holes of band, face pad can be with for the appearance of the insulating surfaces pad that the present embodiment obtains
It is inserted in the electrode protrusion of rectangular cell, if electrolyte leakage occurs in battery, face pad can be made to become aubergine from yellow green, played
Leakage detection acts on.
The problem of irregular colour or open defect is not present in the insulating surfaces pad that the present embodiment obtains, and is not in the feelings of missing inspection
Condition.
Embodiment 3
A kind of preparation method of insulating surfaces pad is present embodiments provided, specific method is：
It is that 1.0 μm -2.0 μm of polypropylene is soaked in and is mixed to get by indicator, adsorbent and organic solvent by aperture
In mixed solution, after being impregnated for 24 hours at a temperature of 55 DEG C, the polypropylene after immersion is dried and cooled down, punching press is then carried out
Molding obtains the insulating surfaces pad suitable for cylindrical battery.
Wherein, the indicator be methyl red, bromocresol green and thymol blue mixture, the methyl red, bromine cresols
In green and thymol blue mixture, the volume fraction of methyl red is 25%, and the volume fraction of bromocresol green is 28%, thymol
Blue volume fraction is 47%；In the mixed solution, a concentration of 14.2wt% of indicator；
The adsorbent is silicones adsorbent, and the grain size of the adsorbent is 100nm-200nm, the mixed solution
In, the mass fraction of adsorbent is 20wt%；
The organic solvent is the mixture of ethyl acetate and ethylene glycol, and the volume ratio of the ethyl acetate and ethylene glycol is
2:8。
The insulating surfaces pad appearance that the present embodiment obtains is identical as the face pad that embodiment 1 obtains.
The insulating surfaces pad that the present embodiment obtains is being padded with that after the electrolyte contacts of the leakage in battery, can make face from yellow green
Become aubergine, plays the role of leakage detection.
The problem of irregular colour or open defect is not present in the insulating surfaces pad that the present embodiment obtains, and is not in the feelings of missing inspection
Condition.
Embodiment 4
A kind of preparation method of insulating surfaces pad is present embodiments provided, specific method is：
It is that 0.6 μm~8.4 μm of non-woven fabrics is soaked in and is mixed to get by indicator, adsorbent and organic solvent by aperture
In mixed solution, after impregnating 5h at a temperature of 50 DEG C, the polypropylene after immersion is dried and cooled down, is then struck out
Type obtains the insulating surfaces pad suitable for rectangular cell.
Wherein, the indicator be methyl red, bromocresol green and thymol blue mixture, the methyl red, bromine cresols
In green and thymol blue mixture, the volume fraction of methyl red is 43%, and the volume fraction of bromocresol green is 10%, thymol
Blue volume fraction is 47%；In the mixed solution, a concentration of 6.5wt%-14.2wt% of indicator；
The adsorbent is silicones adsorbent, and the grain size of the adsorbent is 80nm~270nm, the mixed solution
In, the mass fraction of adsorbent is 6wt%；
The organic solvent is the mixture of ethyl acetate and ethylene glycol, and the volume ratio of the ethyl acetate and ethylene glycol is
2:8。
The insulating surfaces pad appearance that the present embodiment obtains is identical as the face pad that embodiment 2 obtains.
The insulating surfaces pad that the present embodiment obtains is being padded with that after the electrolyte contacts of the leakage in battery, can make face from yellow green
Become aubergine, plays the role of leakage detection.
The problem of irregular colour or open defect is not present in the insulating surfaces pad that the present embodiment obtains, and is not in the feelings of missing inspection
Condition.
Embodiment 5
A kind of preparation method of insulating surfaces pad is present embodiments provided, specific method is：
It is that 0.6 μm~8.4 μm of non-woven fabrics is soaked in and is mixed to get by indicator, adsorbent and organic solvent by aperture
In mixed solution, after impregnating 0.5h under being spent at 45 DEG C, the polypropylene after immersion is dried and cooled down, is then struck out
Type obtains the insulating surfaces pad suitable for cylindrical battery.
Wherein, the indicator be methyl red, bromocresol green and thymol blue mixture, the methyl red, bromine cresols
In green and thymol blue mixture, the volume fraction of methyl red is 43%, and the volume fraction of bromocresol green is 10%, thymol
Blue volume fraction is 47%；In the mixed solution, a concentration of 14.2wt% of indicator；
The adsorbent is silicones adsorbent, and the grain size of the adsorbent is 80nm-270nm, in the mixed solution,
The mass fraction of adsorbent is 6wt%；
The organic solvent is the mixture of ethyl acetate and ethylene glycol, and the volume ratio of the ethyl acetate and ethylene glycol is
2:8。
The insulating surfaces pad appearance that the present embodiment obtains is identical as the face pad that embodiment 1 obtains.
The insulating surfaces pad that the present embodiment obtains can make face pad from yellowish green discoloration after being contacted with the electrolyte leakage in battery
At aubergine, play the role of leakage detection.
The problem of irregular colour or open defect is not present in the insulating surfaces pad that the present embodiment obtains, and is not in the feelings of missing inspection
Condition.
Embodiment 6
The present embodiment provides a kind of preparation method of insulating surfaces pad, specific method with reference to embodiment 4, difference lies in：Nothing
The soaking time of woven fabric is for 24 hours.
The insulating surfaces pad appearance that the present embodiment obtains is identical as the face pad that embodiment 2 obtains.
The insulating surfaces pad that the present embodiment obtains can make face pad from yellowish green discoloration after being contacted with the electrolyte leakage in battery
At aubergine, play the role of leakage detection.
The problem of irregular colour or open defect is not present in the insulating surfaces pad that the present embodiment obtains, and is not in the feelings of missing inspection
Condition.
Embodiment 7
The present embodiment provides a kind of preparation method of insulating surfaces pad, specific method is：
The paper material that aperture is 1 μm~9 μm is soaked in and is mixed by what indicator, adsorbent and organic solvent were mixed to get
It closes in solution, after impregnating 1h at a temperature of 35 DEG C, the polypropylene after immersion is dried and cooled down, punch forming is then carried out
Obtain the insulating surfaces pad suitable for cylindrical battery.
Wherein, the indicator be methyl red, bromocresol green and thymol blue mixture, the methyl red, bromine cresols
In green and thymol blue mixture, the volume fraction of methyl red is 43%, and the volume fraction of bromocresol green is 10%, thymol
Blue volume fraction is 47%；In the mixed solution, a concentration of 8.5wt% of indicator；
The adsorbent is silicones adsorbent, and the grain size of the adsorbent is 80nm~270nm, the mixed solution
In, the mass fraction of adsorbent is 2wt%；
The organic solvent is the mixture of ethyl acetate and ethylene glycol, and the volume ratio of the ethyl acetate and ethylene glycol is
2:8。
The insulating surfaces pad appearance that the present embodiment obtains is identical as the face pad that embodiment 1 obtains.
The insulating surfaces pad that the present embodiment obtains can make face pad from yellowish green discoloration after being contacted with the electrolyte leakage in battery
At aubergine, play the role of leakage detection.
The problem of irregular colour or open defect is not present in the insulating surfaces pad that the present embodiment obtains, and is not in the feelings of missing inspection
Condition.
Embodiment 8
The present embodiment provides a kind of preparation method of insulating surfaces pad, specific method with reference to embodiment 7, difference lies in：Paper
The soaking time of material is 5min.
The insulating surfaces pad appearance that the present embodiment obtains is identical as the face pad that embodiment 1 obtains.
The insulating surfaces pad that the present embodiment obtains can make face pad from yellowish green discoloration after being contacted with the electrolyte leakage in battery
At aubergine, play the role of leakage detection.
The problem of irregular colour or open defect is not present in the insulating surfaces pad that the present embodiment obtains, and is not in the feelings of missing inspection
Condition.
Embodiment 9
The present embodiment provides a kind of preparation method of insulating surfaces pad, specific method with reference to embodiment 7, difference lies in：Paper
The soaking time of material is 2h.
The insulating surfaces pad appearance that the present embodiment obtains is identical as the face pad that embodiment 1 obtains.
The insulating surfaces pad that the present embodiment obtains can make face pad from yellowish green discoloration after being contacted with the electrolyte leakage in battery
At aubergine, play the role of leakage detection.
The problem of irregular colour or open defect is not present in the insulating surfaces pad that the present embodiment obtains, and is not in the feelings of missing inspection
Condition.
Comparative example 1
For the specific method of this comparative example with reference to embodiment 1, difference lies in do not use adsorbent.
There is irregular colour and open defect in the insulating surfaces pad that this comparative example is prepared, indicator is in insulating surfaces
It is fixed insecure on pad, it is easy to fall off.The case where insulating surfaces pad detection battery leakage made from this comparative example will appear missing inspection,
Cause serious security risk.
Based on the above embodiments with comparative example it is found that irregular colour is not present for insulating surfaces pad provided by the invention or appearance lacks
Sunken problem, and indicator is fixed very secured on insulating surfaces pad, it is not easily to fall off, letter is operated when for detecting battery leakage
The case where list directly displays leakage prompt color, is not necessarily to other detection instruments, and detection efficiency height is not in missing inspection.Comparative example
There is no comparative example there is no scheme using the present invention, thus the effect of the present invention can not be obtained.
Applicant states that the present invention illustrates detailed process equipment and the technological process of the present invention by above-described embodiment,
But the invention is not limited in above-mentioned detailed process equipment and technological processes, that is, it is above-mentioned detailed not mean that the present invention has to rely on
Process equipment and technological process could be implemented.Person of ordinary skill in the field it will be clearly understood that any improvement in the present invention,
The addition of equivalence replacement and auxiliary element to each raw material of product of the present invention, the selection etc. of concrete mode all fall within the present invention's
Within protection domain and the open scope.
Claims (10)
1. a kind of insulating surfaces pad, which is characterized in that the insulating surfaces pad includes by containing hole face cushion material and containing hole face positioned at described
The modification face pad that adsorbent in cushion material hole is formed, and the indicator positioned at the modified face pad surface.
2. insulating surfaces pad according to claim 1, which is characterized in that the insulating surfaces pad is by being modified face pad and being located at institute
The indicator composition on modified face pad surface is stated, the modified face pad is by containing hole face cushion material and positioned at the hole of cushion material containing hole face
In adsorbent formed；
Preferably, the aperture of the cushion material containing hole face is 0.4 μm -3.1 μm；
Preferably, the cushion material containing hole face includes any one in polypropylene, non-woven fabrics or paper material or at least two
Combination；
Preferably, the adsorbent includes resin sorbent, preferably silicones adsorbent；
Preferably, the grain size of the adsorbent is 80nm-270nm；
Preferably, the indicator includes coordination indicator and/or oxidation-reduction indicator；
Preferably, the indicator includes any one in methyl red, bromocresol green, thymol blue or phosphomolybdic acid or at least two
The combination of kind；
Preferably, the indicator be methyl red, bromocresol green and thymol blue mixture.
3. the preparation method of insulating surfaces pad according to claim 1 or 2, which is characterized in that the method includes following steps
Suddenly：
Cushion material containing hole face is soaked in the mixed solution containing indicator, adsorbent and organic solvent, to containing after immersion
The progress of hole face cushion material is mechanical-moulded to obtain the insulating surfaces pad.
4. preparation method according to claim 3, which is characterized in that the aperture of the cushion material containing hole face be 0.4 μm-
3.1μm；
Preferably, the cushion material containing hole face includes any one in polypropylene, non-woven fabrics or paper material or at least two
Combination.
5. preparation method according to claim 3 or 4, which is characterized in that in the mixed solution, indicator it is a concentration of
6.5wt%-14.2wt%；
Preferably, the indicator includes coordination indicator and/or oxidation-reduction indicator；
Preferably, the indicator includes any one in methyl red, bromocresol green, thymol blue or phosphomolybdic acid or at least two
The combination of kind；
Preferably, the indicator be methyl red, bromocresol green and thymol blue mixture；
Preferably, in the mixture of the methyl red, bromocresol green and thymol blue, the volume fraction of methyl red is 25%-
45%；
Preferably, in the mixture of the methyl red, bromocresol green and thymol blue, the volume fraction of bromocresol green is 10%-
30%；
Preferably, in the mixture of the methyl red, bromocresol green and thymol blue, the volume fraction of thymol blue is 23%-
47%.
6. according to claim 3-5 any one of them preparation methods, which is characterized in that in the mixed solution, adsorbent
Mass fraction is 1wt%-20wt%, preferably 2wt%-6wt%；
Preferably, the adsorbent includes resin sorbent, preferably silicones adsorbent；
Preferably, the grain size of the adsorbent is 80nm-270nm.
7. according to claim 3-6 any one of them preparation methods, which is characterized in that the organic solvent be ethyl acetate,
In ethylene glycol any one or at least two combination；
Preferably, the organic solvent is the mixture of ethyl acetate and ethylene glycol；
Preferably, the volume ratio of the ethyl acetate and ethylene glycol is 1:9-2:7, preferably 2:8.
8. according to claim 3-7 any one of them preparation methods, which is characterized in that the time of the immersion is 5min-
24h；
Preferably, when the cushion material containing hole face is polypropylene, the soaking time is 1h-24h；
Preferably, when the cushion material containing hole face is non-woven fabrics, the soaking time is 0.5h-24h；
Preferably, when the cushion material containing hole face is paper material, the time of the immersion is 5min-2h；
Preferably, the temperature of the immersion is 30 DEG C -55 DEG C；
Preferably, the method further includes：After steeping with it is mechanical-moulded before, the cushion material containing hole face after immersion is dried
It is dry and cooling；
Preferably, the drying carries out in an oven；
Preferably, described mechanical-moulded for punch forming.
9. according to claim 3-8 any one of them preparation methods, which is characterized in that the described method comprises the following steps：
Cushion material containing hole face is soaked in the mixed solution being mixed to get by indicator, adsorbent and organic solvent, 30 DEG C-
After impregnating 5min-24h at a temperature of 55 DEG C, the cushion material containing hole face after immersion is dried and cooled down, is then struck out
Type obtains the insulating surfaces pad；
Wherein, the indicator be methyl red, bromocresol green and thymol blue mixture, the methyl red, bromocresol green and
In the mixture of thymol blue, the volume fraction of methyl red is 25%-45%, and the volume fraction of bromocresol green is 10%-30%,
The volume fraction of thymol blue is 23%-47%；In the mixed solution, a concentration of 6.5wt%-14.2wt% of indicator；
The adsorbent is silicones adsorbent, and the grain size of the adsorbent is 80nm-270nm, in the mixed solution, absorption
The mass fraction of agent is 2wt%-6wt%；
The organic solvent is the mixture of ethyl acetate and ethylene glycol, and the volume ratio of the ethyl acetate and ethylene glycol is 2:8.
10. the purposes of insulating surfaces pad according to claim 1 or 2, which is characterized in that the insulating surfaces pad is leaked for battery
The inspection of liquid.
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| CN201711490322.9A CN108593210A (en) | 2017-12-30 | 2017-12-30 | A kind of insulating surfaces pad and its preparation method and application |
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| CN201711490322.9A CN108593210A (en) | 2017-12-30 | 2017-12-30 | A kind of insulating surfaces pad and its preparation method and application |
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| JP2008128666A (en) * | 2006-11-16 | 2008-06-05 | Taisei Oncho Kk | Water leakage detector and piping structure using the water leakage detector |
| US20080286154A1 (en) * | 2007-05-15 | 2008-11-20 | Polestar Technologies, Inc. | Multilayered optical sensing patch and retaining plug therefor |
| CN103091321A (en) * | 2012-12-25 | 2013-05-08 | 山东辛化硅胶有限公司 | Cobaltless blue color-changing indicator and production method thereof |
| CN103257127A (en) * | 2013-05-13 | 2013-08-21 | 华南理工大学 | Method for improving dispersibility of fluorescent indicator molecules in organic silica gel and preparing oxygen sensitive fluorescent screen |
| CN107431253A (en) * | 2015-04-15 | 2017-12-01 | 株式会社Lg化学 | For detecting the packing ring of electrolyte leakage and secondary cell comprising the packing ring |
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