A release agent for ultra-thin magnesium alloy die-casting parts in the frame of 3c electronic products

Abstract

The invention provides a release agent for an ultra-thin magnesium alloy die casting of a middle plate of an edge framework of an outer casing of a 3C (computer, communication and computer electronic)electronic product. The release agent is prepared from the following raw materials of modified long chain phenyl silicone oil, modified long chain alkyl aryl silicone oil, polymer polymerizing resin,unsaturated polyol ester, polyethylene glycol, sebacic acid, triethanolamine, mineral oil, heterogeneous C13 alcohol polyoxyethylene ether, high molecular weight non-ionic surfactant, deionized water, and polyethylene wax. The release agent is a chemical isolation coating material with high temperature-resistant property and anti-oxidizing property for lubricating oil in the cooling and forming process of die casting molds and cavities, and has the advantages that one layer of uniform and firm high-temperature skin film is formed by a silicone oil synthesizing modifying formula technique andcompound ester type net-shaped high-temperature film factors; the good lubricating effect is realized, the releasing is convenient, and the surface of the product is clean and smooth; the temperatureof a mold is controlled, the abrasion of the mold is reduced, and the service life of the mold is prolonged.

Description

technical field [0001] The invention relates to a release agent, more specifically to a release agent for an ultra-thin magnesium alloy die-casting part of a middle plate of a 3C electronic product shell frame. Background technique [0002] Traditional die-casting release agents are mainly made of simethicone, mineral oil, vaseline, paraffin, 0P-10, TX-4, water, etc. The finished emulsion is easy to separate, has poor stability, and is easy to deteriorate. Low, the temperature resistance of the oil film reaches 260°C, while the temperature of the magnesium alloy molten soup is 650°C and the temperature of the contact mold is about 350°C, which causes the oil film of the release agent to be burned and carbonized at high temperature, and loses the functions of lubrication and isolation film, resulting in product sticking to the mold , many defective products, high scrap rate, too much carbon on the surface of the product, black color, difficult to handle, serious flow lines, a...

AI Technical Summary

Problems solved by technology

[0002] Traditional die-casting release agents are mainly made of simethicone, mineral oil, vaseline, paraffin, 0P-10, TX-4, water, etc. The finished emulsion is easy to separate, has poor stability, and is easy to deteriorate. Low, the temperature resistance of the oil film reaches 260°C, while the temperature of the magnesium alloy molten soup is 650°C and the temperature of the contact mold is about 350°C, which causes the oil film of the release agent to be burned and carbonized at high temperature, and loses the functions of lubrication and isolation film, resulting in product sticking to the mold , many defective products, high scrap rate, too much carbon on the surface of the product, black color, difficult to handle, serious flow lines, poor aesthetics

Long-term use will seriously wear the mold, damage the equipment, reduce the service life, and cannot meet the requirements of long-term continuous production