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Release agent for lead storage battery grid casting and preparing method thereof

A technology of lead storage battery and mold release agent, which is applied to casting molding equipment, casting molds, casting mold components, etc. It can solve the problems of poor high temperature tolerance of cork powder, rough surface porosity of grids, shortening battery cycle life, etc., and achieves Good mechanical and electrical properties, increased durability, and the effect of extending time intervals

Active Publication Date: 2017-12-26
TIANNENG BATTERY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cork powder particles are relatively large added raw materials, and cork powder has poor high temperature tolerance, continuous carbon deposition during use, easy carbonization and falling off, poor adhesion or viscosity, resulting in poor durability of the release agent, and because cork powder is easy to It falls off, so it is necessary to frequently brush the film and spray the release agent, which affects the production efficiency and causes poor product stability; the rough surface porosity of the grid causes the battery plate to be corroded by sulfuric acid too quickly and fails, shortening the battery cycle life

Method used

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  • Release agent for lead storage battery grid casting and preparing method thereof
  • Release agent for lead storage battery grid casting and preparing method thereof
  • Release agent for lead storage battery grid casting and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Prepare the release agent as follows:

[0031] (1) First weighing 50 g of cork powder with a fineness of 500 mesh and 20 g of volcanic ash with a fineness of 800 mesh (produced by U.S. HESS company, the same below), dry stirring the two powders for 2 minutes, and mixing them uniformly;

[0032] (2) Heat distilled water with conductivity ≤10 μS / cm to a temperature of 60°C to 76.7°C, then slowly put the mixture in step (1) into 1000g of heated water, stir continuously for more than 15 minutes to mix evenly, and then let stand for 6 Allow to cool down to room temperature over an hour;

[0033] (3) The sodium silicate that weighed 20g is dropped into and stirred evenly, stirring time 10 minutes;

[0034] (4) Stand still and ripen for 24 hours, waiting for the penetration of cork powder and solvent;

[0035] (5) Add 15g of 12% phenolic resin solution (containing 1.8g of phenolic resin) with a weighed concentration and stir evenly for 10 minutes;

[0036] (6) Stand for 24 ...

Embodiment 2

[0038] Prepare the release agent as follows:

[0039] (1) First weigh 40g of cork powder with a fineness of 500 mesh and 15g of volcanic ash with a fineness of 800 mesh, dry stir the two powders for 2 minutes, and mix well;

[0040] (2) Heat distilled water with conductivity ≤10 μS / cm to a temperature of 60°C to 76.7°C, then slowly put the mixture in step (1) into 1000g of heated water, stir continuously for more than 15 minutes to mix evenly, and then let stand for 6 Allow to cool down to room temperature over an hour;

[0041] (3) The sodium silicate that weighed 25g is put into and stirred evenly, stirring time 10 minutes;

[0042] (4) Stand still and ripen for 24 hours, waiting for the penetration of cork powder and solvent;

[0043] (5) Add 16.7 g of 12% phenolic resin solution (containing 2 g of phenolic resin) with a weighed concentration and stir evenly for 10 minutes;

[0044] (6) Stand for 24 hours to allow the cork powder and solvent to penetrate completely.

Embodiment 3

[0046] Prepare the release agent as follows:

[0047] (1) First weigh 60g of cork powder with a fineness of 500 mesh and 25g of volcanic ash with a fineness of 800 mesh, dry stir the two powders for 2 minutes, and mix well;

[0048] (2) Heat distilled water with conductivity ≤10 μS / cm to a temperature of 60°C to 76.7°C, then slowly put the mixture in step (1) into 1000g of heated water, stir continuously for more than 15 minutes to mix evenly, and then let stand for 6 Allow to cool down to room temperature over an hour;

[0049] (3) The sodium silicate that weighed 15g is dropped into and stirred evenly, stirring time 10 minutes;

[0050] (4) Stand still and ripen for 24 hours, waiting for the penetration of cork powder and solvent;

[0051] (5) Add 10g of phenolic resin solution (containing 1.5g of phenolic resin) with a weighed concentration of 15% and stir evenly for 10 minutes;

[0052] (6) Stand for 24 hours to allow the cork powder and solvent to penetrate completely....

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Abstract

The invention discloses a release agent for lead storage battery grid casting and a preparing method thereof. The release agent for lead storage battery grid casting comprises the following raw materials of, by mass, 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 silicate and 0.15-0.20 parts of phenolic resin. According to the release agent for lead storage battery grid casting, the volcanic ash of being high-temperature-resistant, high in viscosity, not easy to carbonize and small in particles is added, the fact that the release agent falls off too fast is reduced, the durability of the release agent is increased, the time interval of mould jetting during grid casting is extended, the work efficiency is improved, and the stability of plate grid gram weight is improved; and the water-soluble phenolic resin is added, the release agent has the advantages of heat resistance, flame resistance and water resistance and insulativity, the acid resistance is good, the alkali resistance is poor, the mechanical and electrical performances are good, demoulding is easy, the transfer rate is low, during synthesis, different components are added, the modified phenolic resin of different functions can be obtained, and the release agent has a variety of excellent characteristics such as alkali resistance, abrasion resistance, oil resistance and corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of storage battery production, in particular to a mold release agent for casting lead storage battery grids and a preparation method thereof. Background technique [0002] The grid is one of the core components of the lead-acid battery. In the lead-acid battery, the grid acts as the carrier of the active material and plays the role of skeleton support and adhesion of the active material. At the same time, the grid also acts as a conductor of the current. In addition, the grid is also used as the uniform fluid of the plate to make the current evenly distributed in the active material. [0003] At present, the processing technology of the grid mainly includes casting and die-casting, and most of the grids are made of lead-based alloy through gravity casting, that is, the configured lead-based alloy is melted and cast into the mold of the grid. During casting, the release agent is an indispensable auxiliary pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00B22D25/04
CPCB22C3/00B22D25/04
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
Owner TIANNENG BATTERY GROUP
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