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What is a mold release agent
Time：
2023-03-14
Mold release agents are functional substances between the mold and the finished product that are chemically resistant and do not dissolve when in contact with the chemical components of different resins (especially styrene and amines).
What is a mold release agent?
Mold release agents are functional substances between the mold and the finished product that are chemically resistant and do not dissolve when in contact with the chemical components of different resins (especially styrene and amines).
The release agent is also heat and stress resistant, does not decompose or wear off easily, bonds to the mold without transferring to the part being processed, and does not interfere with painting or other secondary processing operations.
Classification of mold release agent
1.Classification by usage
internal mold release agent, external mold release agent.
2.Classification by life
conventional mold releasing agent, semi-permanent mold releasing agent.
3.Classification by form
solvent-based release agent, water-based release agent, solvent-free release agent, powder release agent, paste release agent.
4.Classification by active substance
Silicon series - mainly silicone compounds, silicone oil, silicone resin methyl branched silicone oil, methyl silicone oil, emulsified methyl silicone oil, hydrogen-containing methyl silicone oil, silicone grease, silicone resin, silicone rubber, silicone rubber toluene solution.
Wax series - plant, animal, synthetic paraffin wax; microcrystalline paraffin wax; polyethylene wax, etc.
Fluorine series - the best isolation performance, little pollution to the mold, but high cost PTFE; fluorine resin powder; fluorine resin coating, etc.
Surfactant series - metal soap (anionic), EO, PO derivatives (non-ionic).
Inorganic powder series - talc, mica, clay, white clay, etc.
Polyether series - mixture of polyether and grease, good heat and chemical resistance, mostly used in certain rubber industries where there are restrictions on silicone oil. Cost is higher than silicone oil series.
The difference between water-based and solvent-based mold release agents
1.Water-based mold release agent
Acid resistant, alkali resistant, hard water resistant, strong water solubility, good stability. Any proportion of water dilution does not stratify, does not break emulsion, does not caking, long shelf life, high solid content, good dispersibility.
2.Oil-based mold release agent
CFA-free, environmentally friendly and non-toxic; oil-based mold release agent does not corrode the product and mold, does not affect the second processing of the product, the surface is not greasy; especially suitable for large plastic shell products molding.
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