Aluminum alloy is the most widely used non-ferrous metal material in my country. It has low density, high strength and good plasticity. It is widely used in military, civil, construction industry and many other fields.
The aluminum alloy material is heated and melted, injected into the mold cavity under high pressure under liquid, and the top part of the mold is opened and ejected in a short time. In order to ensure the smooth ejection of the product, a release agent must be sprayed on the mold cavity surface before injection , and the release agent mainly plays the role of releasing the wax emulsion, which has excellent lubrication, temperature resistance and other effects, and the wetting temperature is often higher than the mold temperature to achieve effective spray release.
At present, the release agents mainly include oil-based release agents, water-based release agents and powder release agents. The oily release agent emits black smoke during use, pollutes the production environment, and also easily contaminates the surface of the aluminum alloy due to its strong oiliness. In domestic use, powder release agent has uneven distribution of effective components, unsightly surface of aluminum alloy, and high cost. The main application field of powder release agent is vacuum die casting.
Water-based mold release agents have the advantages of good cooling effect, no accumulation, good surface quality of castings, help to reduce internal air porosity, and safe and environmentally friendly use. The oxidized polyethylene wax emulsion is an important component in the preparation of water-based mold release agents. It not only has good performance in terms of temperature resistance, lubrication and compatibility, so the oxidized polyethylene wax emulsion is widely used in various industries. Raw material for water-based mold release agents.
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