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Release agent used for pouring lead-acid storage battery grid and preparation method of release agent

A lead-acid battery and mold release agent technology, which is applied in the direction of casting molds, mold components, manufacturing tools, etc., can solve the problems of undurable mold release agents, grid pores or cracks, etc., to improve adhesion and refine pores , the effect of reducing the cost of use

Active Publication Date: 2015-05-13
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is to provide a release agent for cast lead-acid battery grid and its preparation method, which can solve the technical problems of grid pores or cracks, and the release agent is not durable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: weigh each material according to the release agent formula proportioning of the present invention, prepare according to the release agent preparation method of the present invention:

[0016] (1) Add 10Kg of deionized water with a conductivity of ≤10μs / cm, 240g of industrial first-grade powdered sodium silicate, and 45g of industrial first-grade cooked rubber powder into the aluminum bucket and heat it to a temperature of 80°C;

[0017] (2) Slowly mix 420g of 600 mesh cork powder with a specific surface area of ​​200m 2 Add 8 g of fumed silica per gram into water and keep stirring until cork powder and fumed silica are evenly dispersed in water;

[0018] (3) Continue to heat and boil on low heat for 30 minutes;

[0019] (4) After stopping heating, add 50 g of analytically pure phosphoric acid and fully stir for 3 minutes;

[0020] (5) After the prepared mold release agent is cooled, pass through a 60-mesh sieve before use.

[0021] After checking that t...

Embodiment 2

[0022] Embodiment 2: Weigh each material according to the release agent formula proportioning of the present invention, prepare according to the release agent preparation method of the present invention:

[0023] (1) Add 9.8Kg of deionized water with a conductivity of ≤10μs / cm, 235g of industrial first-grade powdered sodium silicate, and 43g of industrial first-grade cooked rubber powder into the aluminum bucket and heat it to a temperature of 78°C;

[0024] (2) Slowly add 410g of 600 mesh cork powder with a specific surface area of ​​200m 2 Add 6g of fumed silica per gram into water and keep stirring until cork powder and fumed silica are evenly dispersed in water;

[0025] (3) Continue to heat and boil on low heat for 30 minutes;

[0026] (4) After stopping heating, add 47g of analytically pure phosphoric acid and fully stir for 3 minutes;

[0027] (5) After the prepared mold release agent is cooled, pass through a 60-mesh sieve before use.

[0028] After checking that th...

Embodiment 3

[0029] Embodiment 3: weigh each material according to the release agent formula proportioning of the present invention, prepare according to the release agent preparation method of the present invention:

[0030] (1) Add 10.2Kg of deionized water with a conductivity of ≤10μs / cm, 245g of industrial first-grade powdered sodium silicate, and 47g of industrial first-grade cooked rubber powder into the aluminum bucket and heat to a temperature of 82°C;

[0031] (2) Slowly mix 430g of 600-mesh cork powder with a specific surface area of ​​200m 2 Add 10 g of fumed silica per gram into water and keep stirring until cork powder and fumed silica are evenly dispersed in water;

[0032] (3) Continue to heat and boil on low heat for 30 minutes;

[0033] (4) After stopping the heating, 53 g of analytically pure phosphoric acid was added and fully stirred for 3 minutes;

[0034] (5) After the prepared mold release agent is cooled, pass through a 60-mesh sieve before use.

[0035] After ch...

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Abstract

The invention discloses a release agent used for pouring lead-acid storage battery grid. The releasing agent consists of the following substances by weight ratio: 100+ / -2 parts of water, 4.2+ / -0.1 parts of cork powder, 2.4+ / -0.05 parts of sodium silicate, 0.5+ / -0.03 parts of phosphoric acid, 0.45+ / -0.02 parts of ripe rubber powder, and 0.08+ / 0.02 parts of fumed silica. The preparation method of the releasing agent used for pouring the lead-acid storage battery grid comprises the following steps of: (1) adding deionized water with a formula amount, the sodium silicate and the ripe rubber powder into an aluminum drum for heating to the temperature of 80+ / -2 DEG C; (2) slowly adding the cork powder with a formula amount and the fumed silica into the obtained solution and stirring continuously until the cork powder and the fumed silica disperse uniformly in the water; (3) continuing to heat with low flame to keep boiling for thirty minutes; (4) stopping heating, and afterwards adding the phosphoric acid with a formula amount and stirring sufficiently for two to three minutes. The releasing agent is mainly used for demolding of the lead-acid storage battery grid in the casting process, and belongs to the technical field of storage batteries.

Description

technical field [0001] The invention relates to a release agent for casting lead-acid battery grids and a preparation method thereof, which is mainly used for demoulding when casting lead-acid storage battery grids, and belongs to the technical field of storage batteries. Background technique [0002] The grid is an important part of the lead-acid battery. It plays the role of conducting electricity and supporting active materials in the lead-acid battery. The quality of the grid directly affects the performance of the battery. At present, more than 80% of the grids used in domestic lead-acid batteries are gravity casted, and the mold release agent is an indispensable auxiliary product during casting. The quality of the release agent directly affects the casting quality of the grid. If the release agent is not well prepared, pores or cracks are likely to occur when the grid is cast. During the use of the plate, the sulfuric acid electrolyte can easily enter the deep layer o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C3/00B22D25/04
Inventor 周明明杜恩生
Owner CHAOWEI POWER CO LTD
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