Substance applied to prevent adhesion to a surface
For the pharmacological meaning, see releasing agent.
Polydimethylsiloxane (PDMS) is a typical release agent.
A release agent (also mold release agent, release coating, or mold release coating) is a chemical used to prevent other materials from bonding to surfaces. Release agents aid in processes involving mold release, die-cast release, plastic release, adhesive release, and tire and web release.[1] Release agents are one of many additives used in the production of plastics.[2]
Release agents provide a barrier between a molding surface and the substrate, facilitating separation of the cured part from the mold. Without such a barrier, the substrate would become fused to the mold surface, resulting in difficult clean-up and dramatic loss in production efficiency. Even when a release agent is used, factors such as irregular applications or improper release agent choice may have a dramatic effect on the quality and consistency of the finished product. Many kinds of release agents are used. They are waxes, fatty ester, silicones, and metallic soaps.[1]
Magnesium stearate is a release agent.
^ abLammerting, Helmut (2000). "Release Agents". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a23_067. ISBN 978-3527306732.
^Stevens, Malcolm P. (1993). "Polymer Additives: III. Surface Property and Processing Modifiers". Journal of Chemical Education. 70 (9): 713. Bibcode:1993JChEd..70..713S. doi:10.1021/ed070p713.
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sides with a releaseagent, which provides a release effect against any type of a sticky material such as an adhesive or a mastic. Release liners are available...
plaster to form a thin layer of calcium stearate, which functions as a releaseagent. Steric acid can be converted to zinc stearate, which is used as a lubricant...
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softness, insolubility in many solvents, and low toxicity. It is used as a releaseagent and as a component or lubricant in the production of pharmaceuticals...
as a releaseagent for plastics, an anti-sludge additive in motor lubricants, an anti-gumming agent in gasoline, and an emulsifier, spreading agent, and...
alloys/metals and urethane, epoxy or polyester resins (without using a releaseagent). A more recent innovation is the ability to 3D print RTV silicones...
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chlorinated hydrocarbons when heated. It is the most powerful mold releaseagent among all metal soaps. It contains no electrolyte and has a hydrophobic...
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