Release agent for lead-acid battery cast plate and preparation method of release agent

Abstract

The invention discloses a release agent for a lead-acid battery cast plate, and relates to the technical field of release agent preparation, the release agent comprises the following components in percentage by mass: 94% of pure water, 1.41% of gelatin, 0.38% of polyvinyl alcohol, 0.28% of cork powder, 0.28% of sodium silicate and 0.28% of aluminum dihydrogen phosphate, and the cork powder is added into the release agent to prepare the release agent for the lead-acid battery cast plate. The mass ratio of the cork powder is 2.8%, the mass ratio of the sodium silicate is 0.66%, the mass ratio of the aluminum dihydrogen phosphate is 0.75%, and the mold release agent is prepared by adopting a uniform stirring method, the mold release agent for the lead-acid storage battery casting grid solves the problems that an existing mold release agent is not resistant to high temperature, short in service time and unstable in product weight, and the mold release agent can be used for casting the grid of the lead-acid storage battery. And the phenomenon that the grid is easy to generate air holes is improved, the production efficiency is improved, and the cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of mold release agent preparation, and particularly relates to a mold release agent for lead-acid battery casting plates and a preparation method thereof. Background Art

[0002] The grid is an important part of the lead-acid battery. There are two types: mesh and casting. The grid in the battery mainly supports the active material, acts as a carrier of the active material, and improves the utilization rate of the active material. Therefore, the quality of the grid directly affects the performance of the battery. Take the cast grid as an example: in order to ensure the molding rate of the cast grid, a release agent must be sprayed between the mold surface and the casting alloy. The release agent is generally sprayed on the inner cavity of the mold, mainly for heat preservation, heat insulation and adjustment of the thickness uniformity of the grid.

[0003] Obviously, the quality of the release agent is closely related to the quality of the grid. The release agents currently used in the market have poor molding, low efficiency, and make the grid quality unstable. Summary of the invention

[0004] To achieve the above purpose, the technical solution of the present invention is as follows: a release agent for lead-acid battery casting plate, the release agent includes pure water, gelatin, polyvinyl alcohol, cork powder, sodium silicate and aluminum dihydrogen phosphate, and the release agent is prepared by a certain proportion and a stirring method.

[0005] As an improvement of the present invention, among the components of the release agent, the mass ratio of pure water is 94%, the mass ratio of gelatin is 1.41%, the mass ratio of polyvinyl alcohol is 0.38%, the mass ratio of cork powder is 2.8%, the mass ratio of sodium silicate is 0.66%, and the mass ratio of aluminum dihydrogen phosphate is 0.75%.

[0006] As an improvement of the present invention, a method for preparing a release agent for a lead-acid battery cast plate comprises the following steps: Step 1: Mix the measured pure water, gelatin, polyvinyl alcohol, sodium silicate and aluminum dihydrogen phosphate; Step 2: Stirring with a stirrer under heating conditions; Step 3: When gelatin and polyvinyl alcohol are completely dissolved, add the measured cork powder and stir; Step 4: Turn off the heating source and adjust the stirring speed until it is evenly dispersed. After cooling, the above-mentioned release agent can be obtained.

[0007] As an improvement of the present invention, in step one, the amount of pure water is 94 parts, the amount of gelatin is 1.41 parts, the amount of polyvinyl alcohol is 0.38 parts, the amount of cork powder is 2.8 parts, the amount of sodium silicate is 0.66 parts, and the amount of aluminum dihydrogen phosphate is 0.75 parts.

[0008] As an improvement of the present invention, in the step 2, the mixture is heated to 75° C. and stirred with a stirrer at a speed of 200 r / min for 1 h.

[0009] As an improvement of the present invention, in step 2, when the temperature rises to 80° C., the stirring speed is adjusted to 300 r / min to completely dissolve the gelatin and polyvinyl alcohol.

[0010] As an improvement of the present invention, in step three, the stirring time after adding the cork powder is 0.5h.

[0011] As an improvement of the present invention, in step 4, the stirring speed for stirring until the dispersion is uniform is adjusted to 80 r / min.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the lead-acid battery casting grid of the present invention uses a release agent, which solves the problems of the existing release agent being not resistant to high temperatures, having a short service life, and having unstable product weight, and improves the phenomenon that the grid is prone to pores, thereby improving production efficiency and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a flow chart of the method for preparing the release agent. DETAILED DESCRIPTION

[0014] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0015] Example: Figure 1 As shown, a release agent for lead-acid battery casting plate, the release agent includes pure water, gelatin, polyvinyl alcohol, cork powder, sodium silicate and aluminum dihydrogen phosphate, and the release agent is prepared by a certain proportion and a stirring method.

[0016] As an improvement of this embodiment, among the components of the release agent, the mass ratio of pure water is 94%, the mass ratio of gelatin is 1.41%, the mass ratio of polyvinyl alcohol is 0.38%, the mass ratio of cork powder is 2.8%, the mass ratio of sodium silicate is 0.66%, and the mass ratio of aluminum dihydrogen phosphate is 0.75%.

[0017] As an improvement of this embodiment, a method for preparing a release agent for a lead-acid battery cast plate comprises the following steps: Step S1: Mix measured pure water, gelatin, polyvinyl alcohol, sodium silicate and aluminum dihydrogen phosphate; Step S2: stirring with a stirrer under heating conditions; Step S3: When the gelatin and polyvinyl alcohol are completely dissolved, add the measured cork powder and stir; Step S4: Turn off the heating source and adjust the stirring speed until the mixture is evenly dispersed. After cooling, the release agent can be obtained.

[0018] As an improvement of this embodiment, in step one, the amount of pure water is 94 parts, the amount of gelatin is 1.41 parts, the amount of polyvinyl alcohol is 0.38 parts, the amount of cork powder is 2.8 parts, the amount of sodium silicate is 0.66 parts, and the amount of aluminum dihydrogen phosphate is 0.75 parts.

[0019] As an improvement of this embodiment, in the step 2, the mixture is heated to 75° C. and stirred with a stirrer at a speed of 200 r / min for 1 h.

[0020] As an improvement of this embodiment, in step 2, when the temperature rises to 80° C., the stirring speed is adjusted to 300 r / min to completely dissolve the gelatin and polyvinyl alcohol.

[0021] As an improvement of this embodiment, in step three, the stirring time after adding the cork powder is 0.5 h.

[0022] As an improvement of this embodiment, in step 4, the stirring speed for stirring until the dispersion is uniform is adjusted to 80 r / min.

[0023] Based on the test of this embodiment, the release agent components using 94 parts of pure water, 1.41 parts of gelatin, 0.38 parts of polyvinyl alcohol, 2.8 parts of cork powder, 0.66 parts of sodium silicate, and 0.75 parts of aluminum dihydrogen phosphate have better high temperature resistance, service life and product weight stability than release agents with the same ingredients but different dosages as the release agent and release agents with different ingredients but different dosages. At the same time, the bubble phenomenon generated is less than that of release agents with the same ingredients but different dosages as the release agent and release agents with different ingredients but different dosages.

[0024] It should be noted that the above content only illustrates the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications all fall within the protection scope of the claims of the present invention.

Claims

1. A release agent for lead-acid battery casting plate, characterized in that: The release agent comprises pure water, gelatin, polyvinyl alcohol, cork powder, sodium silicate and aluminum dihydrogen phosphate, and the release agent is prepared by a method of uniformly stirring in a certain proportion.

2. A release agent for lead-acid battery casting plate according to claim 1, characterized in that: Among the components of the release agent, the mass ratio of pure water is 94%, the mass ratio of gelatin is 1.41%, the mass ratio of polyvinyl alcohol is 0.38%, the mass ratio of cork powder is 2.8%, the mass ratio of sodium silicate is 0.66%, and the mass ratio of aluminum dihydrogen phosphate is 0.75%.

3. A method for preparing a release agent for lead-acid battery cast plate according to any one of claims 1 to 2, characterized in that: The method comprises the following steps: Step 1: Mix the measured pure water, gelatin, polyvinyl alcohol, sodium silicate and aluminum dihydrogen phosphate; Step 2: Stirring with a stirrer under heating conditions; Step 3: When gelatin and polyvinyl alcohol are completely dissolved, add the measured cork powder and stir; Step 4: Turn off the heating source and adjust the stirring speed until it is evenly dispersed. After cooling, the above-mentioned release agent can be obtained.

4. The method for preparing a release agent for lead-acid battery cast plate according to claim 3, characterized in that: In the step 1, the amount of pure water is 94 parts, the amount of gelatin is 1.41 parts, the amount of polyvinyl alcohol is 0.38 parts, the amount of cork powder is 2.8 parts, the amount of sodium silicate is 0.66 parts, and the amount of aluminum dihydrogen phosphate is 0.75 parts.

5. The method for preparing a release agent for lead-acid battery cast plate according to claim 3, characterized in that: In the step 2, the mixture is heated to 75° C. and stirred with a stirrer at a speed of 200 r / min for 1 h.

6. The method for preparing a release agent for lead-acid battery cast plate according to claim 3, characterized in that: In the step 2, when the temperature rises to 80° C., the stirring speed is adjusted to 300 r / min to completely dissolve the gelatin and polyvinyl alcohol.

7. The method for preparing a release agent for lead-acid battery cast plate according to claim 3, characterized in that: In step 3, the stirring time after adding the cork powder is 0.5h.

8. The method for preparing a release agent for lead-acid battery cast plate according to claim 3, characterized in that: In step 4, the stirring speed is adjusted to 80 r / min until the dispersion is uniform.

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