CN107511448B - A kind of lead storage battery grid casting release agent and preparation method thereof - Google Patents

A kind of lead storage battery grid casting release agent and preparation method thereof Download PDF

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Publication number
CN107511448B
CN107511448B CN201710656638.4A CN201710656638A CN107511448B CN 107511448 B CN107511448 B CN 107511448B CN 201710656638 A CN201710656638 A CN 201710656638A CN 107511448 B CN107511448 B CN 107511448B
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release agent
storage battery
lead storage
battery grid
added
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CN107511448A (en
Inventor
汤序锋
侯国友
高根芳
方明学
袁关锐
李鹏
代飞
周文渭
刘青
陈彩凤
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Tianneng Battery Group Co Ltd
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Tianneng Battery Group Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C3/00Selection of compositions for coating the surfaces of moulds, cores, or patterns
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D25/00Special casting characterised by the nature of the product
    • B22D25/02Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
    • B22D25/04Casting metal electric battery plates or the like

Abstract

The invention discloses a kind of lead storage battery grid casting release agents and preparation method thereof.A kind of lead storage battery grid casting release agent, the raw material including following mass parts: 100 parts of water;4~6 parts of cork powder;1.5~2.5 parts of volcanic ash;1.5~2.5 parts of sodium metasilicate;0.15~0.20 part of phenolic resin.High temperature resistant, stickiness are high, are not easy to be carbonized, the lesser volcanic ash of particle by being added for lead storage battery grid casting release agent of the present invention, the too fast of release agent is reduced to fall off, increase the durability of release agent, the time interval of jet mould, the stability for improving working efficiency, improving grid grammes per square metre when extending grid casting.Resol resins are added, have the advantages that heat resistance, flame resistance, water resistance and insulating properties, acid resistance is preferable, and alkali resistance is poor, mechanically and electrically functional, demoulding is easy, the rate of transform is low, and different component is added in when synthesis, can get the phenol-formaldehyde resin modified of Various Functions, with different good characteristics, such as alkali resistance, wearability, oil resistivity, corrosion resistance.

Description

A kind of lead storage battery grid casting release agent and preparation method thereof
Technical field
The present invention relates to storage battery production technical field, more particularly to a kind of lead storage battery grid casting release agent and Preparation method.
Background technique
Grid is one of core component of lead-acid accumulator, in lead-acid accumulator, carrier of the grid as active material, Play a part of skeletal support and adhesion activity substance, meanwhile, grid is also used as the conductor of electric current to play afflux, confluence and defeated The effect of stream, in addition, grid is also used as the equal fluid of pole plate that can make balanced current distribution in active material.
Currently, the processing technology of grid mainly has casting and die casting, and most grids are to pass through weight by lead-containing alloy Power casting is made, i.e., will be cast in the mold of grid after the fusing of configured lead-containing alloy.In casting, release agent is must not The auxiliary product that can lack, on the one hand, release agent makes grid be more easier to be removed from the mold;On the other hand, since mold is Metal is made, therefore there are the characteristics that rapid heat dissipation, and mold inner-cavity groove is narrow shallow in addition, so that the alloy liquid of fusing is difficult to fill Full mold, therefore, the mobility of alloy can be guaranteed by spraying release agent between die surface and cast alloys, guarantee moulding plate The ratio of briquetting of grid.
Therefore, the quality of release agent directly affects the quality of grid casting, and release agent configuration is bad, not only influences demoulding effect Rate influences production efficiency, it is also possible to generate stomata or crackle etc. when grid being caused to be cast, influence current conductivity energy.
The main component of existing demoulding agent prescription is cork powder, plays heat preservation and buffer action, makes lead liquid in flow process It is middle to keep more stable temperature, it avoids lead liquid temperature fluctuated, prevents grid from forming.Cork powder particles belong to larger add Adding raw material, and cork powder high temperature resistance is poor, continuous carbon distribution in use, easily carbonization fall off, and stickiness is poor in other words for adhesion, It causes release agent durability poor, and since cork powder is easy to fall off, so needing frequent brush film, sprays release agent, influence to produce Efficiency causes product stability poor;Grid surface layer porosity is coarse, causes battery pole plates are too fast to be failed by sulfuric acid corrosion, contracting Short battery cycle life.
For example the Chinese invention patent that Authorization Notice No. is CN102873265B discloses a kind of casting lead acid storage battery plants Grid release agent and its preparation method, the release agent are made of following substance and weight ratio: 100 ± 2 parts of water, cork powder 4.2 ± 0.1 part, 2.4 ± 0.05 parts of sodium metasilicate, 0.5 ± 0.03 part of phosphoric acid, 0.45 ± 0.02 part of ripe rubber powder, fumed silica 0.08 ± 0.02 part.The preparation method of above-mentioned casting lead acid battery grid release agent, comprising the following steps: (1) by formula ratio Deionized water, sodium metasilicate, ripe rubber powder, which are added in Aluminum Drum, be heated to 80 ± 2 DEG C of temperature;(2) slowly by the cork of formula ratio Powder, fumed silica are added in acquired solution and are stirred continuously, until cork powder and fumed silica are dispersed in In water;(3) continue heating to be boiled with soft fire 30 minutes;(4) phosphoric acid of formula ratio is added thereto after stopping heating and is sufficiently stirred 2 ~3 minutes
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provides that a kind of durability is good, grid grammes per square metre stability is good Lead storage battery grid casting release agent and preparation method thereof.
A kind of lead storage battery grid casting release agent, the raw material including following mass parts:
Preferably, lead storage battery grid casting release agent, the raw material composition including following mass parts:
Preferably, the conductivity of the water≤10 μ S/cm.
Preferably, the fineness of the cork powder is 500 mesh.
Preferably, the fineness of the volcanic ash is 800 mesh.
Preferably, in use, the phenolic resin is first dissolved in wiring solution-forming in organic solvent.It the use of concentration is generally 12% ~15% phenol resin solution, selling prewired phenol resin solution concentration in the market is mostly 12% or 15%.Used in dissolution Organic solvent need to be water-soluble because release agent of the present invention, using water as solvent, which can be methanol, second Alcohol (analysis is pure), acetone etc., improve solution mixing uniformity.
The present invention also provides the preparation methods of the lead storage battery grid casting release agent, comprising the following steps:
(1) cork powder and volcanic ash are uniformly mixed;
(2) it will be uniformly mixed in the water of the mixture investment heating of step (1), be cooled to room temperature;
(3) sodium metasilicate is added and stirs evenly;
(4) maturation;
(5) phenolic resin is added and stirs evenly;
(6) 24~48h is stood.
Preferably, the coolant-temperature gage heated in step (2) is 60 DEG C~76.7 DEG C.
Preferably, the maturation time is for 24 hours.
The preparation method is first affine using powdered cork powder and volcanic ash mixing, adds 60 DEG C~76.7 DEG C hot water When be capable of the microcellular structure of fully penetrated cork powder and volcanic ash, make release agent consistency, even concentration after allotment, improve release agent The anti-charing being attached in heating mould.The solution of ratio is added in subsequent substep, improves allotment release agent mixing velocity, mentions High mixing uniformity.
High temperature resistant, stickiness are high, be not easy to be carbonized, particle is smaller by being added for lead storage battery grid casting release agent of the present invention Volcanic ash, reduce the too fast of release agent and fall off, increase the durability of release agent, when extending grid casting between the time of jet mould Every the stability for improving working efficiency, improving grid grammes per square metre.Resol resins are added, there is heat resistance, flame resistance, water-fast Property and insulating properties advantage, acid resistance it is preferable, alkali resistance is poor, mechanically and electrically functional, and demoulding is easy, and the rate of transform is low, synthesis When different component is added, can get the phenol-formaldehyde resin modified of Various Functions, there is different good characteristics, such as alkali resistance, wear-resisting Property, oil resistivity, corrosion resistance etc..
Detailed description of the invention
Fig. 1 is the grammes per square metre distribution map of 200 grids of 1 release agent of embodiment production.
Fig. 2 is the grammes per square metre distribution map of 200 grids of 1 release agent of comparative example production.
Specific embodiment
Embodiment 1
Release agent is prepared according to the following steps:
(1) the cork powder 50g that fineness is 500 mesh and volcanic ash (HESS company, the U.S. life that fineness is 800 mesh are first weighed Produce, similarly hereinafter) 20g, it is uniformly mixed by the dry stirring of two kinds of powder 2 minutes;
(2) conductivity≤10 μ S/cm distilled water is heated to temperature is 60 DEG C~76.7 DEG C, then by step (1) Mixture is slowly put into the 1000g water of heating, is continuously stirred 15 minutes or more and is uniformly mixed, being then allowed to stand 6 hours or more makes It is cooled to room temperature;
(3) sodium metasilicate of weighed 20g is put into and is stirred evenly, mixing time 10 minutes;
(4) it stands, maturation 24 hours, waits the infiltration of cork powder and solvent;
(5) weighed concentration is added to be 12% phenol resin solution 15g (containing phenolic resin 1.8g) and stir evenly, stirs Mix the time 10 minutes;
(6) 24 hours are stood, permeates cork powder and solvent completely.
Embodiment 2
Release agent is prepared according to the following steps:
(1) the cork powder 40g that fineness is 500 mesh and the volcanic ash 15g that fineness is 800 mesh are first weighed, two kinds of powder are done Stirring 2 minutes is uniformly mixed;
(2) conductivity≤10 μ S/cm distilled water is heated to temperature is 60 DEG C~76.7 DEG C, then by step (1) Mixture is slowly put into the 1000g water of heating, is continuously stirred 15 minutes or more and is uniformly mixed, being then allowed to stand 6 hours or more makes It is cooled to room temperature;
(3) sodium metasilicate of weighed 25g is put into and is stirred evenly, mixing time 10 minutes;
(4) it stands, maturation 24 hours, waits the infiltration of cork powder and solvent;
(5) weighed concentration is added to be 12% phenol resin solution 16.7g (containing phenolic resin 2g) and stir evenly, stirs Mix the time 10 minutes;
(6) 24 hours are stood, permeates cork powder and solvent completely.
Embodiment 3
Release agent is prepared according to the following steps:
(1) the cork powder 60g that fineness is 500 mesh and the volcanic ash 25g that fineness is 800 mesh are first weighed, two kinds of powder are done Stirring 2 minutes is uniformly mixed;
(2) conductivity≤10 μ S/cm distilled water is heated to temperature is 60 DEG C~76.7 DEG C, then by step (1) Mixture is slowly put into the 1000g water of heating, is continuously stirred 15 minutes or more and is uniformly mixed, being then allowed to stand 6 hours or more makes It is cooled to room temperature;
(3) sodium metasilicate of weighed 15g is put into and is stirred evenly, mixing time 10 minutes;
(4) it stands, maturation 24 hours, waits the infiltration of cork powder and solvent;
(5) weighed concentration is added to be 15% phenol resin solution 10g (containing phenolic resin 1.5g) and stir evenly, stirs Mix the time 10 minutes;
(6) 24 hours are stood, permeates cork powder and solvent completely.
Comparative example 1
The release agent preparation method tested as a comparison:
(1) 1000g conductivity≤10 μ S/cm distilled water is measured to pour into aluminum pot.
(2) gelatine 14g, polyvinyl alcohol 4g are weighed to be added in aluminum pot, aluminum pot is placed in lead melting furnace and is heated.
(3) it is heated to boiling, the side Bian Jiare is stirred continuously, and dissolves solid matter sufficiently.
(4) the cork powder 60g that fineness is 500 mesh is added in into clear liquid while hot, stirs while adding uniformly, is cooled to room Warm standby is used.
(5) storage period is not rancid for principle with release agent, but at most must not exceed 72h.
Embodiment 4
(1) using the release agent prepared in Examples 1 to 3 as experimental group, using the release agent prepared in comparative example 1 as pair It according to group, is then produced as a trial respectively, the results are shown in Table 1, and for control group, experimental group jet mould number subtracts significantly Few, (complementary modulus refers in process of production complementary modulus, when grid grammes per square metre occur and starting unstable, carries out the supplement complementary modulus of release agent.) Number is also reduced, and illustrates that experimental group release agent durability is more preferable.
Table 1
(2) ingot stripper and control group (release agent of the preparation of comparative example 1) of the preparation of embodiment 1 in difference statistical experiment group Preceding 200 grids produced in 1 are repeated, as a result as shown in Fig. 1 (embodiment 1) and Fig. 2 (comparative example 1) and table 2, through statistical Analysis, very poor (difference of maxima and minima) of experimental group is 2.6g, smaller than the 4.0g of control group, and the standard deviation of experimental group It is 0.67, also 0.95 than control group is small, illustrates that the grammes per square metre of the release agent production grid using experimental group is relatively stable.
Table 2
Embodiment 1 Comparative example 1
Average value 169.3g 169.9g
Maximum value 170.9g 172.0g
Minimum value 168.3g 168.0g
It is very poor 2.6g 4.0g
Standard deviation 0.67 0.95

Claims (9)

1. a kind of lead storage battery grid casting release agent, which is characterized in that the raw material including following mass parts:
2. lead storage battery grid casting release agent as described in claim 1, which is characterized in that the original including following mass parts Material composition:
3. lead storage battery grid casting release agent as described in claim 1, which is characterized in that conductivity≤10 of the water μS/cm。
4. lead storage battery grid as described in claim 1 casting release agent, which is characterized in that the fineness of the cork powder is 500 mesh.
5. lead storage battery grid as described in claim 1 casting release agent, which is characterized in that the fineness of the volcanic ash is 800 mesh.
6. lead storage battery grid casting release agent as described in claim 1, which is characterized in that in use, the phenolic aldehyde tree Rouge is first dissolved in wiring solution-forming in organic solvent.
7. the preparation method that release agent is used in the lead storage battery grid casting as described in claim 1~6 is any, which is characterized in that The following steps are included:
(1) cork powder and volcanic ash are uniformly mixed;
(2) it will be uniformly mixed in the water of the mixture investment heating of step (1), be cooled to room temperature;
(3) sodium metasilicate is added and stirs evenly;
(4) maturation;
(5) phenolic resin is added and stirs evenly;
(6) 24~48h is stood.
8. preparation method as claimed in claim 7, which is characterized in that the coolant-temperature gage heated in step (2) is 60 DEG C~76.7 ℃。
9. preparation method as claimed in claim 7, which is characterized in that the maturation time is for 24 hours.
CN201710656638.4A 2017-08-03 2017-08-03 A kind of lead storage battery grid casting release agent and preparation method thereof Active CN107511448B (en)

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CN108838318B (en) * 2018-07-16 2019-12-24 昆山帝邦铸造科技有限公司 High-temperature-resistant casting mold release agent and preparation method and use method thereof
CN108788003B (en) * 2018-08-29 2020-09-08 昆山帝邦铸造科技有限公司 Powdery mold release agent and preparation method and use method thereof
CN108788002B (en) * 2018-08-29 2020-01-21 昆山帝邦铸造科技有限公司 Heat-resistant aluminum alloy die-casting release agent and preparation method and use method thereof

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JPS557098B2 (en) * 1976-09-25 1980-02-22
CN102873265B (en) * 2012-09-10 2015-05-13 超威电源有限公司 Release agent used for pouring lead-acid storage battery grid and preparation method of release agent
CN104174812A (en) * 2013-09-30 2014-12-03 天能电池(芜湖)有限公司 Mold releasing agent and preparation method thereof
CN105710286B (en) * 2016-04-06 2018-02-16 天能电池集团(安徽)有限公司 A kind of casting grid of lead-acid accumulator releasing agent
CN106141075A (en) * 2016-08-27 2016-11-23 安徽龙泉硅材料有限公司 A kind of sand casting releasing agent utilizing precipitated silica to prepare

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