Environment-friendly mold release agent and preparation method thereof

Abstract

The invention belongs to the technical field of mold release agents, and particularly discloses an environment-friendly mold release agent and a preparation method thereof. The environment-friendly mold release agent is prepared from the following raw materials in parts by mass: 10-30 parts of waste engine oil, 2-6 parts of soapy water, 2-6 parts of a thickener, 3-6 parts of lard and the balance of water. The preparation method comprises the following specific manufacturing steps that a membrane body is wrapped with a sticking film used; a cavity is formed in the membrane body; a water absorbing layer is placed in the cavity; an air bag is fixedly connected to the inner wall of the side, away from through holes, of the cavity; and uniformly arranged springs are fixedly connected between the surface of the air bag and the inner wall of the side, near the through holes, of the cavity. According to the environment-friendly mold release agent and the preparation method thereof, the water absorbing layer is placed in the membrane body, and the water absorbing layer absorbs a large amount of environment-friendly mold release agent. Casting liquid is effectively separated from a mold through the environment-friendly mold release agent during casting of the casting liquid, so that the contact area between the casting liquid and the membrane body is reduced. The environment-friendly mold release agent in the water absorbing layer is completely extruded out through the thermal expansion of mercury in the air bag, and the environment-friendly mold release agent is prevented from flowing out too fast through cooperation with the springs so that the environment-friendly mold release agent can be reused.

Description

technical field [0001] The invention belongs to the technical field of release agents, in particular to an environment-friendly release agent and a preparation method thereof. Background technique [0002] The release agent is a functional substance between the mold and the finished product. Mold release agents are chemically resistant and do not dissolve when in contact with the chemical composition of different resins (especially styrene and amines). The release agent also has heat and stress resistance, and is not easy to decompose or wear; the release agent adheres to the mold and does not transfer to the workpiece to be processed, and does not hinder painting or other secondary processing operations. Due to the rapid development of injection molding, extrusion, calendering, molding, lamination and other processes, the amount of release agent has also increased significantly. [0003] In the prior art, when the finished product is taken out, the release agent cannot be...

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Problems solved by technology

[0004] In order to make up for the deficiencies of the existing technology and solve the problems that the release agent cannot be reused, causing waste of raw materials, polluting the environment and easy entry of the release agent into the pouring liquid, resulting in a decrease in the strength of the finished product and a decrease in the purity of the finished product, the invention proposes a Environment-friendly release agent and preparation method thereof

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