Water-based release agent for anodized aluminum alloy die-casting thin parts and preparation method thereof

Abstract

The invention provides an aqueous mold lubricant preparation method used for an anodised aluminium alloy thin member. The aqueous mold lubricant preparation method comprises the following steps: S1) performing an esterification reaction of pentaerythritol with stearic acid and acrylic acid to obtain polymerization ester; wherein the mole ratio of pentaerythritol to stearic acid to acrylic acid is1:3:1; S2) performing copolymerization on the polymerization ester and maleic anhydride to obtain a mixed copolymer; mixing the mixed copolymer and an emulsifier, and adding a potassium hydroxide aqueous solution to prepare a first emulsion; S3) performing copolymerization on ethylene and propylene to obtain olefin polymer; mixing the olefin polymer and wax, adding the emulsifier and heating the material; and cooling the material to room temperature, and adding water to obtain a second emulsion; and S4) mixing the first emulsion and the second emulsion to obtain the aqueous mold lubricant. Theinvention also provides the aqueous mold lubricant used for the anodised aluminium alloy thin member by employing the above preparation method. The aqueous mold lubricant has the advantages of easy moulding demoulding and uniform and firm coloring.

Description

technical field [0001] The invention relates to a water-based release agent for anodized aluminum alloy die-casting thin parts and a preparation method thereof. Background technique [0002] In modern industrial production, the release agent is widely used, which can separate the product from the mold and reduce the loss of the product. [0003] Anodized aluminum alloy die-casting thin parts are difficult to form and difficult to demould; it is difficult and uneven to color with conventional mold release agents (such as silicone, wax, ester, etc.). [0004] Therefore, how to provide a release agent that is easy to form and has firm and uniform coloring has become a problem to be solved in the industry. Contents of the invention [0005] For the shortcoming of prior art, the purpose of this invention is to provide a kind of water-based release agent preparation method for anodized aluminum alloy die-cast thin parts, the water-based release agent for anodized aluminum alloy...

AI Technical Summary

Problems solved by technology

[0003] Anodized aluminum alloy die-casting thin parts are difficult to shape and difficult to demould; it is difficult and uneven to use conventional mold release agents (such as silicone, wax, ester, etc.)