CN109755666A - A method of improving lead-acid accumulator brittleness and sulfur reduction - Google Patents
A method of improving lead-acid accumulator brittleness and sulfur reduction Download PDFInfo
- Publication number
- CN109755666A CN109755666A CN201711079951.2A CN201711079951A CN109755666A CN 109755666 A CN109755666 A CN 109755666A CN 201711079951 A CN201711079951 A CN 201711079951A CN 109755666 A CN109755666 A CN 109755666A
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- China
- Prior art keywords
- divinyl
- weight
- brittleness
- ethylene copolymer
- polybutadiene
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- 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
The invention discloses a kind of improvement lead-acid accumulator brittleness and the methods of sulfur reduction, it is sealed, place surface to be sealed is polished clean, first brushing liquid rubber gasket coating (primer), after solidification, surface layer poured asphalt, sealing technology can prevent acid solution from climbing along battery shell wall to stretch, prevent acid gas from escaping, to extend the charge discharge life of battery.
Description
Technical field
The invention belongs to sealants, technical field of coatings, are related to a kind of method for improving lead-acid accumulator brittleness and sulfur reduction.
Background technique
Lead-acid accumulator is one kind of battery, mainly does electrolyte using dilute sulfuric acid, with brown lead oxide and velvet-like lead point
Not as the anode of battery and a kind of acid accumulator of cathode.
Document (Huang Guichang, " seal technology of VRLA batteries ", battery, 2001,31:282) discusses a kind of plumbic acid
The sealing technology of battery container cover has heat sealing method, gluing method.Heat-sealing is that so that the sealing part of thermoplastic material slot cover is heated micro-
It is molten, then sealing is realized with the method for mechanical pressurization power joint seal.Its working efficiency and the degree of automation is higher, but by
Equipment and technology limitation, using also not extensive.Currently, using method that is more or using sealant gluing.For valve-regulated lead
The sealant of sour battery must meet the conditions such as bonding, sealing, acid corrosion-resistant, resistance to certain temperature test, not introduce objectionable impurities,
It also needs to bear air pressure inside and external force simultaneously fall off without damage, is more durable than stronger.In addition, it is also contemplated that economical
Property, operation complexity etc..High-molecular compound with certain molecular weight, such as epoxies sealant, rubber sealant quilt
Widely used, their bonding force and cohesive force is all stronger, and sealing and bonding effect are also all relatively good.But epoxies seals
Agent also relies on the cleaning and coarse journey of the kind and quantity, solidification temperature, adhesive surface of solid formulation except epoxy resin is selected
Degree, under additional certain pressure, the effect that can be got well；Rubber is then passed through vulcanizing agent appropriate, sulphur by rubber sealant
Change the chemical substances such as promotor, antiaging agent to be handled, can just meet the requirements.Adhesive surface hit, twist by mechanical force,
When extruding, some will appear crackle or removing；When battery heating is larger, sealant from slot cover adhesive surface because material is different, it is hot
The coefficient of expansion is different, some also can cause to leak because expanding with heat and contract with cold, and battery, which leaks sour dehydration inconvenience, to be repaired, and will have a direct impact on battery makes
Use the service life.The document proposes to use sealant identical with cell through lid material, such as using ABS as the slot cover of material, directly will
ABS dissolves plastic with organic solvent, is used as sealant, and effect is fairly good.
Patent (200710066962) discloses a kind of accumulator sealant and technique, it is characterised in that: sealant includes
A, two kinds of components of B, A, B component weight ratio be A: B=2: 1；Component A is made of epoxy resin, diluent and/or solvent；B group
Part is made of curing agent, plasticizer.Epoxy resin is bisphenol A type epoxy resin or bisphenol A type epoxy resin and phenolic epoxy
The mixture of resin, has good mobility before sealing glue solidifying, in injection plastic housing slot can automatic levelling rapidly, improve people
The working efficiency of work sealing is not easy to produce bubble because of good fluidity, ensure that the effect of sealing.
Summary of the invention
To improve sealing effect, the vulcanization of the brittleness problems and rubber-type sealant of epoxy type sealant is solved the problems, such as, originally
Invention proposes the technique of lead-acid accumulator slot cover sealing.Bottom brushing liquid rubber gasket coating (primer) 0.1~2mm leads to
End group chain extending reaction is crossed instead of vulcanization crosslinking, is had preferable mobility, adhesive property, with excellent acidproof, resistance to after solidification
Hydrolysis and leakproofness；Surface layer direct pouring pitch, thickness about 2~4cm cast after hot melt, and good leveling property has good grasp
The property made, economy, leakproofness.
The sealing technology that the present invention uses effectively prevents acid solution along battery after the slot cover sealing of lead-acid accumulator
Shell wall, which is climbed, to be stretched, and prevents acid gas from escaping.
Before cell sealing, first sand for surface paper in place's to be sealed of battery container cover is polished, blows away dust with compressed air,
It is then clean with acetone.
When cell sealing, each component is weighed by weight, is made into liquid rubber gasket coating, after stirring evenly, is painted on to close
It at envelope, single or multiple can brush, apply thickness 0.1-2mm, after solidification in room temperature curing to be coated 3~7 days or 50 DEG C 2 days, then
Casting surface layer asphalt or bitumen or epoxy modified asphalt.When poured asphalt, pitch is previously heated to 240~250
DEG C melt after cast, casting thickness 2-4cm, natural levelling.
Liquid rubber gasket coating proportion is as follows: the liquid polybutadiene of ethylene-vinyl acetate copolymer sealing end or poly- fourth
100 parts by weight of styrene or Polybutadiene-acrylonitrile oligomer, 3,6- dimethyl sulphur-based -2,5-, bis- carbaryl or 3,6- bis-
Bis- carbaryl of ethyl -2,5-, 5~20 parts by weight, γ -1~10 weight of glycidyl ether trimethoxy silane coupling agent (KH560)
Part, 0.01~0.1 parts by weight of dibutyl tin dilaurate, 10~30 parts by weight of carbon black.
Ethylene-vinyl acetate copolymer is toluene divinyl-acetate ethylene copolymer, different Fu Er ketone ethene-vinyl acetate
Copolymer, 4,4 ' diisocyanate of diphenyl methane-, the more ethylene-vinyl acetate copolymers of polymethylene polyphenyl, 1,6- oneself two
Ethylene-vinyl acetate copolymer, benzene dimethylene diisocyanate, naphthalene -1,5 divinyl-acetate ethylene copolymer, methyl cyclohexane
Base divinyl-acetate ethylene copolymer and dicyclohexyl methyl hydride diisocyanate.
Polybutadiene, the Polybutadiene-styrene, Polybutadiene-acrylonitrile liquid of ethylene-vinyl acetate copolymer sealing end
Rubber number-average molecular weight is 1000~10000.
Specific embodiment
Example 1
Bottom is using toluene divinyl-acetate ethylene copolymer sealing end liquid polybutadiene gasket coating (primer), table
Layer casting asphalt.
Before brushing primer and poured asphalt, first battery container cover sand for surface paper in place's to be sealed is polished, uses compressed air
Dust is blown away, it is then clean with acetone.
Primer proportion is as follows: toluene divinyl-acetate ethylene copolymer sealing end 100 parts by weight of liquid polybutadiene, 3,
Bis- carbaryl of 6- dimethyl sulphur-based -2,5-, 10 parts by weight, 5 parts by weight of KH560 coupling agent, 0.01 weight of dibutyl tin dilaurate
Part, 10 parts by weight of carbon black.
The primer prepared is stirred evenly, is brushed in battery place to be sealed, 0.5~1mm of coating layer thickness, room temperature curing 7
It, which is 5MPa, elongation at break 200%.
After primer room temperature curing 7 days, surface layer casting asphalt, 2~4cm of thickness.
Using the battery sealing technology, effectively prevents acid solution to climb along battery shell wall and stretch, prevent acid gas from escaping, thus
Extend the life of storage battery.
Example 2
Bottom is applied using different Fu Er ketone divinyl-acetate ethylene copolymer sealing end liquid polybutadiene-styrene sealing
Expect (primer), surface layer casting bitumen.
Before brushing primer and poured asphalt, first battery container cover sand for surface paper in place's to be sealed is polished, uses compressed air
Dust is blown away, it is then clean with acetone.
Primer proportion is as follows: different Fu Er ketone divinyl-acetate ethylene copolymer sealing end liquid polybutadiene-styrene applies
Expect 100 parts by weight, 3,6- diethyl -2,5-, bis- carbaryl, 15 parts by weight, 10 parts by weight of KH560 coupling agent, two fourth of tin dilaurate
0.05 parts by weight of base tin, 20 parts by weight of carbon black.
The primer prepared is stirred evenly, is brushed in battery place to be sealed, 0.7~1mm of coating layer thickness, room temperature curing 5
It, which is 5.5MPa, elongation at break 180%.
After primer room temperature curing 5 days, surface layer casting bitumen, 3~4cm of thickness.
Using the battery sealing technology, effectively prevents acid solution to climb along battery shell wall and stretch, prevent acid gas from escaping, thus
Extend the life of storage battery.
Example 3
Bottom is applied using different Fu Er ketone divinyl-acetate ethylene copolymer sealing end liquid polybutadiene-styrene sealing
Expect (primer), surface layer casting epoxy modified asphalt.
Before brushing primer and poured asphalt, first battery container cover sand for surface paper in place's to be sealed is polished, uses compressed air
Dust is blown away, it is then clean with acetone.
Primer proportion is as follows: different Fu Er ketone divinyl-acetate ethylene copolymer sealing end liquid polybutadiene-styrene applies
Expect 100 parts by weight, 3,6- diethyl -2,5-, bis- carbaryl, 15 parts by weight, 10 parts by weight of KH560 coupling agent, two fourth of tin dilaurate
0.05 parts by weight of base tin, 20 parts by weight of carbon black.
The primer prepared is stirred evenly, is brushed in battery place to be sealed, 0.7~1mm of coating layer thickness, room temperature curing 5
It, which is 5.5MPa, elongation at break 180%.
After primer room temperature curing 5 days, surface layer casting epoxy modified asphalt, 3~4cm of thickness.
Using the battery sealing technology, effectively prevents acid solution to climb along battery shell wall and stretch, prevent acid gas from escaping, thus
Extend the life of storage battery.
Claims (5)
1. a kind of method for improving lead-acid accumulator brittleness and sulfur reduction, in place surface to be sealed poured asphalt, it is characterized in that casting
Before pitch, first the surface at place to be sealed is polished clean, brushing liquid rubber gasket coating, room temperature curing 3-7 days or 50
DEG C poured asphalt again after solidification 2 days.
2. according to improvement lead-acid accumulator brittleness described in claim 1 and the method for sulfur reduction, it is characterized in that liquid rubber sealing applies
Material composition are as follows: the liquid polybutadiene or Polybutadiene-styrene or polybutadiene-the third of ethylene-vinyl acetate copolymer sealing end
100 parts by weight of alkene nitrile oligomer, 3,6- dimethyl sulphur-based -2,5-, bis- carbaryl or 3, bis- carbaryl of 6- diethyl -2,5-, 5~20 weight
Measure part, γ -1~10 parts by weight of glycidyl ether trimethoxy silane coupling agent, 0.01~0.1 weight of dibutyl tin dilaurate
Part, 10~30 parts by weight of carbon black.
3. according to improvement lead-acid accumulator brittleness as claimed in claim 2 and the method for sulfur reduction, it is characterized in that ethene-vinyl acetate is total
The liquid polybutadiene or Polybutadiene-styrene of polymers sealing end or the number-average molecular weight of Polybutadiene-acrylonitrile oligomer are
1000~10000.
4. according to improvement lead-acid accumulator brittleness as claimed in claim 2 and the method for sulfur reduction, it is characterized in that ethene-vinyl acetate is total
Polymers is toluene divinyl-acetate ethylene copolymer, different Fu Er ketone divinyl-acetate ethylene copolymer, diphenyl methane -4,4 '
The more ethylene-vinyl acetate copolymers of divinyl-acetate ethylene copolymer, polymethylene polyphenyl, 1,6- own divinyl-acetic acid second
Alkene copolymer, phenylenedimethylidyne divinyl-acetate ethylene copolymer, naphthalene -1,5 divinyl-acetate ethylene copolymer, methyl cyclohexane
Base divinyl-acetate ethylene copolymer and dicyclohexyl methyl hydride divinyl-acetate ethylene copolymer.
5. according to improvement lead-acid accumulator brittleness described in claim 1 and the method for sulfur reduction, it is characterized in that pitch is bitumen
Or asphalt or epoxy modified asphalt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711079951.2A CN109755666A (en) | 2017-11-06 | 2017-11-06 | A method of improving lead-acid accumulator brittleness and sulfur reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711079951.2A CN109755666A (en) | 2017-11-06 | 2017-11-06 | A method of improving lead-acid accumulator brittleness and sulfur reduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109755666A true CN109755666A (en) | 2019-05-14 |
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ID=66399752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711079951.2A Pending CN109755666A (en) | 2017-11-06 | 2017-11-06 | A method of improving lead-acid accumulator brittleness and sulfur reduction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109755666A (en) |
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2017
- 2017-11-06 CN CN201711079951.2A patent/CN109755666A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190514 |
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| WD01 | Invention patent application deemed withdrawn after publication |