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Mold release agent for casting accumulator grids and preparation method of mold release agent

A release agent and storage battery technology, applied in the direction of casting molding equipment, casting molds, casting mold components, etc., can solve problems such as unstable product quality, low production efficiency, poor molding of release agents, etc., to improve processability and Adsorptivity, cost saving, low surface tension effect

Inactive Publication Date: 2017-12-08
HEFEI SHANGQIANG ELECTRIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the release agent used in battery factories is generally made of cork powder, sodium silicate and water. This release agent is poorly formed and not durable, which easily leads to unstable product quality and low production efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A release agent for battery grid casting, comprising the following raw materials in parts by weight: 0.5 parts of polytetrafluoroethylene, 0.1 parts of aluminum dihydrogen phosphate, 2 parts of cork powder, 0.5 parts of sodium silicate, 1.2 parts of glass fiber powder, concave-convex 0.3 parts of stick clay, 1.5 parts of nano-silica, 6 parts of modified aluminum tripolyphosphate, 0.2 parts of adhesive bone glue, 0.5 parts of polyvinyl alcohol as a stabilizer, and 110 parts of deionized water. Among them, the content of phosphorus pentoxide in the modified aluminum tripolyphosphate is 20-30%, the content of aluminum oxide is 5-12%, the content of titanium dioxide is 12-20%, and the fineness is 300-600 mesh.

[0024] The preparation method of the above-mentioned release agent for battery grid casting comprises the following steps:

[0025] (1) Add deionized water into the reaction kettle and stir at a speed of 400r / min, heat up to 100°C, add sodium silicate and adhesive, ...

Embodiment 2

[0029] A release agent for battery grid casting, comprising the following raw materials in parts by weight: 0.3 parts of polytetrafluoroethylene, 0.1 parts of aluminum dihydrogen phosphate, 3 parts of cork powder, 0.5 parts of sodium silicate, 1.2 parts of glass fiber powder, concave-convex 0.3 parts of stick clay, 1.5 parts of nano silicon dioxide, 5 parts of modified aluminum tripolyphosphate, 0.2 parts of gum arabic as an adhesive, 0.5 parts of magnesium stearate as a stabilizer, and 110 parts of deionized water. Among them, the content of phosphorus pentoxide in the modified aluminum tripolyphosphate is 20-30%, the content of aluminum oxide is 5-12%, the content of titanium dioxide is 12-20%, and the fineness is 300-600 mesh.

[0030] The preparation method of the above-mentioned release agent for battery grid casting comprises the following steps:

[0031] (1) Add deionized water into the reaction kettle and stir at a speed of 500r / min, heat up to 90°C, add sodium silicat...

Embodiment 3

[0035] A release agent for battery grid casting, comprising the following raw materials in parts by weight: 0.3 parts of polytetrafluoroethylene, 0.2 parts of aluminum dihydrogen phosphate, 2 parts of cork powder, 0.3 parts of sodium silicate, 0.9 parts of glass fiber powder, concave-convex 0.3 parts of stick clay, 2.2 parts of nano-silica, 6 parts of modified aluminum tripolyphosphate, 0.3 parts of adhesive industrial gelatin, 0.5 parts of stabilizer lead stearate, and 98 parts of deionized water. Among them, the content of phosphorus pentoxide in the modified aluminum tripolyphosphate is 20-30%, the content of aluminum oxide is 5-12%, the content of titanium dioxide is 12-20%, and the fineness is 300-600 mesh.

[0036] The preparation method of the above-mentioned release agent for battery grid casting comprises the following steps:

[0037] (1) Add deionized water into the reaction kettle and stir at a speed of 600r / min, heat up to 100°C, add sodium silicate and adhesive, h...

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PUM

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Abstract

The invention discloses a release agent for battery grid casting and a preparation method thereof. The release agent comprises the following raw materials in parts by weight: 0.2-0.6 parts of polytetrafluoroethylene, 0.1-0.3 parts of aluminum dihydrogen phosphate, cork 1-5 parts of powder, 0.2-0.6 parts of sodium silicate, 0.6-1.5 parts of glass fiber powder, 0.1-0.6 parts of attapulgite, 0.6-2.5 parts of nano-silicon dioxide, 3-8 parts of modified aluminum tripolyphosphate, Adhesive 0.1-0.5 parts, stabilizer 0.2-0.8 parts, deionized water 90-120 parts. The preparation method adopts conventional mixing, heating and stirring. The mold release agent of the present invention has good sprayability, adhesion, temperature resistance, small surface tension, high compressive strength, smooth exhaust, can significantly reduce the phenomenon of air holes and cracks in the grid, and can also reduce the number of spray molds , improve production efficiency and save costs.

Description

technical field [0001] The invention relates to the field of release agents, in particular to a release agent for battery grid casting and a preparation method thereof. Background technique [0002] The grid is the main component of the lead-acid battery plate. There are two types of netting and casting. The role of the grid in the battery is mainly to support the active material, act as the carrier of the active material, conduct and collect current, and make the current evenly distributed in the active material. In terms of substances, in order to improve the utilization rate of active substances. Therefore, the quality of the grid directly affects the overall performance of the battery. Taking the cast battery grid as an example, its production process includes: alloy preparation, melting, grid mold preheating, spray molding, casting, shearing and leveling, inspection, and age hardening. [0003] In order to ensure the forming rate of the cast grid, a release agent must...

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 程劲松
Owner HEFEI SHANGQIANG ELECTRIC TECH CO LTD
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