CN101880416B - Manufacturing method of flame retardant filter acid film on battery safety valve - Google Patents
Manufacturing method of flame retardant filter acid film on battery safety valve Download PDFInfo
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- CN101880416B CN101880416B CN2010101964059A CN201010196405A CN101880416B CN 101880416 B CN101880416 B CN 101880416B CN 2010101964059 A CN2010101964059 A CN 2010101964059A CN 201010196405 A CN201010196405 A CN 201010196405A CN 101880416 B CN101880416 B CN 101880416B
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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
Abstract
The invention relates to a manufacturing method of a flame retardant filter acid film on a battery safety valve, which is characterized by comprising the following process steps: (a) preparing and weighing components by the ratio of a formula; (b) putting pore former into an oven to dry; (c) simultaneously putting high-density polyethylene, polypropylene and polyethylene octene elastomer into a two-roll mill to plasticate for 2 to 3 min, and adding in flame retardant, flame retardant synergistic agent, brightener and anti-drip agent to continue to plasticate; and finally adding in the pore former to be extruded by double rollers to form a sheet-shaped body; (d) adjusting the spacing between the double rollers to extrude the sheet-shaped body repeatedly extruded by the double rollers into sheets so as to prepare the filter acid film with required thickness; (e) putting the filter acid film into a water tank to soak so that the pore former is fully dissolved; and (f) after dewatering the filter acid film, preparing the flame retardant filter acid film with the required shape on a punch. The manufacturing method of the flame retardant filter acid film on battery safety valve can improve the safety performance of the filter acid film, and has the advantages of flame retardant, anti-explosion, partition, sealing, filtering performance and the like.
Description
Technical field
The present invention relates to the method for manufacture of the flame retardant filter acid film on a kind of battery safety valve, belong to the battery technology field.
Background technology
SV is a vitals of valve controlled sealed lead-acid accumulator.Comprehensive at present domestic and international kind, its structure probably is made up of valve body, plunger (or Capsule), filter acid film, voltage regulation screw, sealing-ring and valve gap.Wherein the main effect of filter acid film on SV is to prevent that acid solution, acid mist from separating out, and guarantees clean environment, and be pollution-free, and effectively cut off extraneous air and spark gets into battery, improves the safety performance of battery.
The mixed gas of forming by a spot of hydrogen and most of oxygen in the store battery, and keep certain pressure.Air pressure inside increases when over-charging of battery, the SV exhaust, and gas is discharged through filter acid film.Because hydrogen and oxygen gas mixture is inflammable, explosive, so the partition of filter acid film, safe operation is extremely important to anti-flaming function to store battery.Yet all there is performance deficiency in domestic and international existing filter acid film at present, mainly contains following three kinds.
First kind: be to use polypropylene powder, the filter acid film that heat-agglomerating forms.Because of Vestolen PP 7052 absorbs water hardly, have good chemicalstability, battery and SV housing generally all adopt polypropylene material, are difficult for oozing acid.Be convenient to polypropylene powder agglomerating filter acid film that (this is the filter acid film and the valve body bonded best approach with the valve body hot weld.Vestolen PP 7052 belongs to non-polar high polymer, and surface energy is low, and percent crystallinity is high, and chemicalstability is good, so there is not the ideal tackiness agent at present).The advantage of this filter acid film is to combine with valve body reliably, and closure is good, is difficult for oozing acid; Shortcoming is not fire-retardant, can't effectively cut off external spark.In case gas is lighted during exhaust, the filter acid film that can ignite rapidly, flame just might get into battery, causes that battery fires, and makes store battery have potential safety hazard.
Second kind: be the filter acid film that forms with the emergy sintering.Its advantage is hard, fire-retardant; Shortcoming is to weld with the Vestolen PP 7052 valve body.And all can't be protected with tackiness agent adherent stability and weather resistance, so be prone to ooze acid, do not have the partition effect in the joint portion, reduced security.
The third: be the filter acid film that forms by the polytetrafluorethylepowder powder sintering.Its advantage is that tetrafluoroethylene fusing point, burning-point are high, and the aperture is thin; Shortcoming is not have brute force, can't weld with the Vestolen PP 7052 valve body, and the joint portion is prone to ooze acid, does not have the partition effect equally, has reduced the security of store battery.
So up to the present owing to the problem of filter acid film, the safety performance of SV is also deposited seriously in defective.The repeatedly fire at communication equipment station, fire alarm accident since nineteen ninety-five just are enough to cause that we pay close attention to the safety performance that how to improve store battery more.According to the statistics made by the departments concerned, the store battery accident accounts for 70% in the power unit accident of communication system, badly influences communication security.
Current battery manufacturer all adopts fire-retardant PP material to produce battery cover and SV housing, and purpose is the security that improves battery.Yet the filter acid film that filters flammable (or combustion-supporting) gas is not fire-retardant or sealing, cut off badly, makes that battery cover and SV housing are fire-retardant to seem meaningless, causes the safety performance of store battery to be had a greatly reduced quality.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art, the method for manufacture of the flame retardant filter acid film on a kind of battery safety valve is provided, can strengthen the safety performance of battery safety valve.
According to technical scheme provided by the invention, the method for manufacture of the flame retardant filter acid film on a kind of battery safety valve, characteristic be, its formula rate is counted by weight, and the component of said filter acid film comprises:
Major ingredient: 8～10 parts of high density polyethylene(HDPE)s
0.4～1.2 part of Vestolen PP 7052
3.5～7.5 parts of Vilaterm octene elastomer
Auxiliary agent: 4.5～9.5 parts of fire retardants
1.5～3.5 parts of fire retardant synergists
0.3～0.4 part in whitening agent
0.3～0.4 part of Antidrip agent
67.5～81.5 parts of pore formers;
The method of manufacture of said flame retardant filter acid film comprises following process step:
(a) press formula rate and prepare the weighing each component;
(b) temperature of pore former being put into drying in oven to pore former reaches 150 ℃～160 ℃, and said temperature of oven is 150 ℃～160 ℃;
(c) high density polyethylene(HDPE), Vestolen PP 7052 and Vilaterm octene elastomer are dropped in two roller mills simultaneously plasticate, two roller temperatures of two roller mills are controlled at 165 ℃～180 ℃; Added fire retardant, fire retardant synergist, whitening agent and Antidrip agent after plasticating 2～3 minutes, continued to plasticate 3～5 minutes; The pore former that adds temperature at last and be 150 ℃～160 ℃ forms plates through two rollers extruding back, and plates are pushed through two rollers after folding again, 5～6 times repeatedly, each component is mixed;
(d) regulate spacing between two rollers, spacing is 3.2～3.4 millimeters, will process the filter acid film of desired thickness through the extruding of the plates after two rollers push repeatedly slice;
(e) filter acid film is put into 20～25 ℃ water tank and soak and pore former was dissolved fully in 35～45 hours, form some micropores on the inside and the surface of filter acid film;
(f) with after the filter acid film dehydration, on punch press, process the flame retardant filter acid film of desired shape, put into the loft drier oven dry, said bake out temperature is 50 ℃～60 ℃, and the time is 2～3 hours.
Said fire retardant is a TDE.
Said flame retardancy synergists is an Antimony Trioxide: 99.5Min.
Said whitening agent is a white titanium pigment.
Said Antidrip agent is a tetrafluoroethylene.
Said pore former is a sodium-chlor.
The fineness of said pore former is 60～100 orders.
In the inner aperture with the surperficial micropore that forms of said filter acid film is 125～198 μ m.
The present invention can improve the safety performance of filter acid film, integrates advantages such as fire-retardant, explosion-proof, partition, sealing, filtration, can with the welding of Vestolen PP 7052 valve body, anti-flaming function is arranged again.
Description of drawings
Fig. 1 is the structural representation of flame retardant filter acid film of the present invention.
Embodiment
Used in the present invention pair of two roller mills that the roller mill can adopt the precious wheel of Dongguan City accurate detector device ltd to produce; The right cylinder type hyperbolic axle punch press that punch press used in the present invention adopts Zhejiang power forge press machines ltd to produce.
High density polyethylene(HDPE) used in the present invention (HDPE) density can adopt the high density polyethylene of sea, Shanghai City safe chemical industry ltd production more than 0.940g/CC;
The PP GRANULES that Vestolen PP 7052 used in the present invention (PP) can adopt Jilin Jin Jiang River oiling factory of Jiization group to produce;
The 8402 type Vilaterm octene elastomer that Vilaterm octene elastomer used in the present invention (POE) can adopt du pont company to produce;
Employed fire retardant is a TDE among the present invention, the TDE that can adopt Shenzhen Hong Taiji Industrial Co., Ltd. to produce;
Employed flame retardancy synergists is an Antimony Trioxide: 99.5Min among the present invention, the Antimony Trioxide: 99.5Min that can adopt Hangzhou honest antimony product ltd to produce;
Employed whitening agent is a white titanium pigment among the present invention, the R-902 type white titanium pigment that adopts du pont company to produce;
Antidrip agent used in the present invention is a tetrafluoroethylene, adopts the tetrafluoroethylene Antidrip agent of the P-5D80 type of producing with matrix material ltd in the Dongguan City;
Pore former used in the present invention is a sodium-chlor, and particle diameter is 60～100 orders, uniform particles, and impurity is few, and solubleness is high.
Below in conjunction with specific embodiment the present invention is described further.
Embodiment one: the method for manufacture of the flame retardant filter acid film on a kind of battery safety valve, and its formula rate is counted by weight, and the component of said filter acid film comprises:
Major ingredient: 8 parts of high density polyethylene(HDPE)s
0.4 part of Vestolen PP 7052
3.5 parts of Vilaterm octene elastomer
Auxiliary agent: fire retardant: 4.5 parts of TDEs
Fire retardant synergist: 1.5 parts of Antimony Trioxide: 99.5Mins
Whitening agent: 0.3 part of white titanium pigment
Antidrip agent: 0.3 part of tetrafluoroethylene
Pore former: 67.5 parts in sodium-chlor;
The method of manufacture of said flame retardant filter acid film comprises following process step:
(a) press formula rate and prepare the weighing each component;
(b) temperature of sodium-chlor being put into drying in oven to sodium-chlor reaches 150 ℃, and said temperature of oven is 155 ℃;
(c) high density polyethylene(HDPE), Vestolen PP 7052 and Vilaterm octene elastomer are dropped in two roller mills simultaneously plasticate, two roller temperatures of two roller mills are controlled at 165 ℃; Added TDE, Antimony Trioxide: 99.5Min, white titanium pigment and tetrafluoroethylene after plasticating 3 minutes, continued to plasticate 3 minutes; The sodium-chlor that adds temperature at last and be 150 ℃ forms plates through two rollers extruding back, and plates are pushed through two rollers after folding again, 5 times repeatedly, each component is mixed;
(d) regulate spacing between two rollers, spacing is 3.2～3.4 millimeters, will process the filter acid film of desired thickness through the extruding of the plates after two rollers push repeatedly slice;
(e) filter acid film is put to soak in 20 ℃ the water tank pore former was dissolved fully in 45 hours, form some micropores on the inside and the surface of filter acid film; The aperture of said micropore is 126 μ m;
(f) with after the filter acid film dehydration, on punch press, process the flame retardant filter acid film of desired shape, put into the loft drier oven dry, said bake out temperature is 50 ℃, and the time is 3 hours.
The flame retardant filter acid film that the present invention makes is pliable and tough, and good permeability, Air permenbility be at 0.3L/min, back pressure 170mm water column.
Embodiment two: the method for manufacture of the flame retardant filter acid film on a kind of battery safety valve, and its formula rate is counted by weight, and the component of said filter acid film comprises:
Major ingredient: 10 parts of high density polyethylene(HDPE)s
1.2 parts of Vestolen PP 7052
7.5 parts of Vilaterm octene elastomer
Auxiliary agent: fire retardant: 9.5 parts of TDEs
Fire retardant synergist: 3.5 parts of Antimony Trioxide: 99.5Mins
Whitening agent: 0.4 part of white titanium pigment
Antidrip agent: 00.4 part of tetrafluoroethylene
Pore former: 81.5 parts in sodium-chlor;
The method of manufacture of said flame retardant filter acid film comprises following process step:
(a) press formula rate and prepare the weighing each component;
(b) temperature of sodium-chlor being put into drying in oven to sodium-chlor reaches 160 ℃, and said temperature of oven is 160 ℃;
(c) high density polyethylene(HDPE), Vestolen PP 7052 and Vilaterm octene elastomer are dropped in two roller mills simultaneously plasticate, two roller temperatures of two roller mills are controlled at 180 ℃; Added TDE, Antimony Trioxide: 99.5Min, white titanium pigment and tetrafluoroethylene after plasticating 2 minutes, continued to plasticate 5 minutes; The pore former that adds temperature at last and be 160 ℃ forms plates through two rollers extruding back, and plates are pushed through two rollers after folding again, 6 times repeatedly, each component is mixed;
(d) regulate spacing between two rollers, spacing is 3.2～3.4 millimeters, will process the filter acid film of desired thickness through the extruding of the plates after two rollers push repeatedly slice;
(e) filter acid film is put into 25 ℃ water tank and soak and pore former to be dissolved fully in 35 hours, form some micropores on the inside and the surface of filter acid film; The aperture of said micropore is 198 μ m;
(f) with after the filter acid film dehydration, on punch press, process the flame retardant filter acid film of desired shape, put into the loft drier oven dry, said bake out temperature is 60 ℃, and the time is 2 hours.
Embodiment three: the method for manufacture of the flame retardant filter acid film on a kind of battery safety valve, and its formula rate is counted by weight, and the component of said filter acid film comprises:
Major ingredient: 9 parts of high density polyethylene(HDPE)s
0.8 part of Vestolen PP 7052
5 parts of Vilaterm octene elastomer
Auxiliary agent: fire retardant: 6 parts of TDEs
Fire retardant synergist: 2.5 parts of Antimony Trioxide: 99.5Mins
Whitening agent: 0.35 part of white titanium pigment
Antidrip agent: 0.35 part of tetrafluoroethylene
Pore former: 70.5 parts in sodium-chlor;
The method of manufacture of said flame retardant filter acid film comprises following process step:
(a) press formula rate and prepare the weighing each component;
(b) temperature of pore former being put into drying in oven to pore former reaches 155 ℃, and said temperature of oven is 5160 ℃;
(c) high density polyethylene(HDPE), Vestolen PP 7052 and Vilaterm octene elastomer are dropped in two roller mills simultaneously plasticate, two roller temperatures of two roller mills are controlled at 170 ℃; Added TDE, Antimony Trioxide: 99.5Min, white titanium pigment and tetrafluoroethylene after plasticating 2.5 minutes, continued to plasticate 4 minutes; The sodium-chlor that adds temperature at last and be 155 ℃ forms plates through two rollers extruding back, and plates are pushed through two rollers after folding again, 6 times repeatedly, each component is mixed;
(d) regulate spacing between two rollers, spacing is 3.2～3.4 millimeters, will process the filter acid film of desired thickness through the extruding of the plates after two rollers push repeatedly slice;
(e) filter acid film is put into 24 ℃ water tank and soak and pore former to be dissolved fully in 40 hours, form some micropores on the inside and the surface of filter acid film; The aperture of said micropore is 150 μ m;
(f) with after the filter acid film dehydration, on punch press, process the flame retardant filter acid film of desired shape, put into the loft drier oven dry, said bake out temperature is 55 ℃, and the time is 2.5 hours.
Flame retardant filter acid film each item performance index that the present invention makes are all more satisfactory, and Air permenbility is a 0.2L/min back pressure 170mm water column.
Claims (3)
1. the method for manufacture of the flame retardant filter acid film on the battery safety valve is characterized in that its formula rate is counted by weight, and the component of said filter acid film comprises:
Major ingredient: 8～10 parts of high density polyethylene(HDPE)s
0.4～1.2 part of Vestolen PP 7052
3.5～7.5 parts of Vilaterm octene elastomer
Auxiliary agent: 4.5～9.5 parts of fire retardants
1.5～3.5 parts of fire retardant synergists
0.3～0.4 part in whitening agent
0.3～0.4 part of Antidrip agent
67.5～81.5 parts of pore formers;
The method of manufacture of said flame retardant filter acid film comprises following process step:
(a) press formula rate and prepare the weighing each component;
(b) temperature of pore former being put into drying in oven to pore former reaches 150 ℃～160 ℃, and said temperature of oven is 150 ℃～160 ℃; Said pore former is a sodium-chlor; The fineness of said pore former is 60～100 orders;
(c) high density polyethylene(HDPE), Vestolen PP 7052 and Vilaterm octene elastomer are dropped in two roller mills simultaneously plasticate, two roller temperatures of two roller mills are controlled at 165 ℃～180 ℃; Added fire retardant, fire retardant synergist, whitening agent and Antidrip agent after plasticating 2～3 minutes, continued to plasticate 3～5 minutes; The pore former that adds temperature at last and be 150 ℃～160 ℃ forms plates through two rollers extruding back, and plates are pushed through two rollers after folding again, 5～6 times repeatedly, each component is mixed; Said fire retardant is a TDE; Said flame retardancy synergists is an Antimony Trioxide: 99.5Min;
(d) regulate spacing between two rollers, will process the filter acid film of desired thickness through the extruding of the plates after two rollers push repeatedly slice;
(e) filter acid film is put into 20～25 ℃ water tank and soak and pore former was dissolved fully in 35～45 hours, form some micropores on the inside and the surface of filter acid film;
(f) with after the filter acid film dehydration, on punch press, process the flame retardant filter acid film of desired shape, put into the loft drier oven dry, said bake out temperature is 50 ℃～60 ℃, and the time is 2～3 hours;
The inner aperture with surface formation micropore of said filter acid film is 125～198 μ m.
2. the method for manufacture of flame retardant filter acid film as claimed in claim 1, it is characterized in that: said whitening agent is a white titanium pigment.
3. the method for manufacture of flame retardant filter acid film as claimed in claim 1, it is characterized in that: said Antidrip agent is a tetrafluoroethylene.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101964059A CN101880416B (en) | 2010-06-03 | 2010-06-03 | Manufacturing method of flame retardant filter acid film on battery safety valve |
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| CN2010101964059A CN101880416B (en) | 2010-06-03 | 2010-06-03 | Manufacturing method of flame retardant filter acid film on battery safety valve |
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| CN101880416B true CN101880416B (en) | 2012-02-01 |
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| CN102532660B (en) * | 2011-12-23 | 2013-10-30 | 常州大学 | Solvent-resistant macromolecular blending material for injection molding |
| CN104829903B (en) * | 2015-04-14 | 2017-09-08 | 常州大学 | A kind of micro- cross-linking system explosion-suppressing materials of low temperature resistant HDPE and preparation method |
| US10889708B2 (en) * | 2016-08-11 | 2021-01-12 | Sabic Global Technologies B.V. | Polymer composition for caps and closures |
| CN107383529B (en) * | 2017-07-26 | 2019-08-20 | 河北见喜新材料科技股份有限公司 | Master batch and preparation method thereof is melted in a kind of fire-retardant toughened increasing for polypropylene fiber |
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| US20090286142A9 (en) * | 2005-02-04 | 2009-11-19 | Flow-Rite Controls, Ltd. | Single point battery watering system including battery refill valves incorporating flame arrestors |
| CN101402011B (en) * | 2008-09-10 | 2011-07-20 | 舟山市虹源高分子科技有限公司 | Cellular plastic filter element and method of producing the same |
| CN201289884Y (en) * | 2008-10-07 | 2009-08-12 | 风帆股份有限公司 | Acid mist filtering acid receiver for charging 6-DGA-120 accumulator |
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