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Common plastic additives - lubricants

2013-07-03 by wsdchemical

Lubricant in the plastics processing flowability of the resin to improve the releasability and products to prevent the
machine or mold adhesion and internal defects. General increase in the molding compound
Lubricant in the plastics processing flowability of the resin to improve the releasability and products to prevent
the machine or mold adhesion and internal defects. General increase in the molding cavity or onto the surface.
Common lubricants are fatty acids and their salts, long chain aliphatic hydrocarbons. The mechanism of action
based plastic lubricant can be divided into external lubricant and internal lubricant.
(1) External Lubricant: The lubricant for molding resin compatibility is poor, so commonly used in the molding
machine or the mold, it forms a lubricating layer between the resin, to facilitate resin flow and mold release
products such as paraffin.
(2) an internal lubricant: Lubricant such good compatibility with the resin, often incorporated into the resin,
reduce the melt viscosity of the resin, to improve their mobility. Such as butyl stearate, lead stearate. Stearic acid
salts as well a lubricant is effective stabilizers.


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