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CN-122012162-A - Concentrated oil dispersion type silicon-based release agent, and preparation method and detection method thereof

CN122012162ACN 122012162 ACN122012162 ACN 122012162ACN-122012162-A

Abstract

The application provides a concentrated oil dispersion type silicon-based release agent, a preparation method and a detection method thereof, wherein the concentrated oil dispersion type silicon-based release agent comprises, by weight, 70-88 parts of silicone oil, 1-2 parts of sorbitan monooleate, 1-3 parts of fatty alcohol polyoxyethylene ether-3, 0.5-2 parts of octyl phenol polyoxyethylene, 0.5-4 parts of polyoxyethylene sorbitol trioleate, 0.1-0.5 part of polyethylene glycol, 0.5-1 part of polypropylene glycol-7, 0.05-0.15 part of antifreeze, 0.15-0.25 part of antirust agent and 0.15-0.25 part of antibacterial agent. The silicon-based release agent provided by the application adopts an oil dispersion technology, and the prepared release agent basically does not contain volatile organic compounds after dilution, so that the environmental pollution is reduced, and the safety performance of a workplace is improved.

Inventors

  • JIAO JIAO
  • Ansa Abbas
  • XU SILONG

Assignees

  • 西安凯姆斯特信息科技有限公司

Dates

Publication Date
20260512
Application Date
20260112

Claims (10)

  1. 1. The concentrated oil dispersion type silicon-based release agent is characterized by comprising the following components in parts by weight: 60-88 parts of silicone oil, 1-2 parts of sorbitan monooleate, 1-3 parts of fatty alcohol polyoxyethylene ether-3, 0.5-2 parts of octyl phenol polyoxyethylene, 0.5-4 parts of polyoxyethylene sorbitol trioleate, 0.1-0.5 part of polyethylene glycol, 0.5-1 part of polypropylene glycol-7, 0.05-0.15 part of antifreeze agent, 0.15-0.25 part of antirust agent and 0.15-0.25 part of antibacterial agent.
  2. 2. The silicon-based release agent according to claim 1, comprising the following components in parts by weight: 75-85 parts of silicone oil, 1.2-1.8 parts of sorbitan monooleate, 1.5-2.5 parts of fatty alcohol polyoxyethylene ether-3, 0.8-1.8 parts of octyl phenol polyoxyethylene, 1-3 parts of polyoxyethylene sorbitol trioleate, 0.2-0.4 part of polyethylene glycol, 0.6-0.9 part of polypropylene glycol-7, 0.08-0.13 part of antifreeze agent, 0.18-0.22 part of antirust agent and 0.18-0.22 part of antibacterial agent.
  3. 3. The silicon-based release agent according to claim 1, comprising the following components in parts by weight: 80 parts of silicone oil, 1.5 parts of sorbitol monooleate, 2 parts of fatty alcohol polyoxyethylene ether-3, 1.5 parts of octylphenol polyoxyethylene, 2 parts of polyoxyethylene sorbitol trioleate, 0.3 part of polyethylene glycol, 0.8 part of polypropylene glycol-7, 0.10 part of antifreeze agent, 0.10 part of antirust agent and 0.10 part of antibacterial agent.
  4. 4. A method for preparing the concentrated oil-dispersed silicon-based mold release agent according to any one of claims 1 to 3, comprising the steps of: Stirring and heating silicone oil; Sequentially adding the sorbitan monooleate, the fatty alcohol polyoxyethylene ether-3, the octylphenol polyoxyethylene, the polyoxyethylene sorbitol trioleate, the polyethylene glycol, the polypropylene glycol-7, the antifreezing agent, the corrosion inhibitor and the antibacterial agent; uniformly mixing and stirring to form concentrated solution; and naturally cooling the concentrated solution.
  5. 5. The method of preparing according to claim 4, wherein the heating comprises the steps of: continuously heating to 45-55deg.C under 100-110kPa while stirring; The stirring speed is 700-900rpm, and the stirring time is 25-40min.
  6. 6. The preparation method according to claim 4, wherein the sequential addition of the sorbitan monooleate, the fatty alcohol polyoxyethylene ether-3, the octylphenol polyoxyethylene, the polyoxyethylene sorbitol trioleate, the polyethylene glycol, the polypropylene glycol-7, the antifreeze, the corrosion inhibitor and the antibacterial agent comprises the following steps: And sequentially adding the sorbitan monooleate, the fatty alcohol polyoxyethylene ether-3, the octylphenol polyoxyethylene, the polyoxyethylene sorbitol trioleate, the polyethylene glycol, the polypropylene glycol-7, the antifreezing agent, the corrosion inhibitor and the antibacterial agent every 5-10 min.
  7. 7. The method according to claim 4, wherein the temperature is 45-55deg.C, the time is 25-35min, and the stirring speed is 700-900rpm.
  8. 8. The method of claim 4, wherein the natural cooling comprises the steps of: naturally cooling the concentrated solution at 20-30 ℃ while continuously and gently stirring to form a release agent; the rotation speed of the gentle stirring is 100-300rpm.
  9. 9. A method for detecting a concentrated oil-dispersed silicon-based release agent as claimed in any one of claims 1 to 3 and/or a silicon-based release agent produced by the production method as claimed in any one of claims 4 to 8, characterized by comprising the steps of: and (3) diluting the release agent with water, and observing after storage, wherein the diluted release agent is uniformly dispersed, stable in anti-foaming, heat-resistant and release performance and successful in preparation.
  10. 10. The method according to claim 9, wherein the dilution ratio is 1 (20-100) of the release agent to water; the storage temperature is 50-60 ℃, and the storage time is 12-17 days.

Description

Concentrated oil dispersion type silicon-based release agent, and preparation method and detection method thereof Technical Field The application relates to the technical field of metal die casting, in particular to a concentrated oil dispersion type silicon-based release agent, a preparation method and a detection method thereof. Background In the field of aluminum die casting, to facilitate the separation of molten metal from the mold surfaces and to improve casting quality, a variety of mold release agents have been developed, and conventional mold release agents typically include solvent-based formulations or pre-emulsions: The solvent-type release agent adopts a high-Volatility Organic Compound (VOC) solvent formula, can be directly coated on the surface of a chip, has the advantages of a mature preparation method, easy application and high environmental and safety risks, is easy to volatilize under high temperature conditions, and causes inconsistent release performance; The pre-emulsion or emulsifiable concentrate is a ready-to-use emulsion without dilution, which has the advantages of immediate availability, acceptable initial emulsion stability, large transport and storage volumes, easy foaming, reduced long-term stability at higher mold temperatures, susceptibility to microbial contamination, limited flexibility in adjusting the emulsion concentration under different mold or operating conditions, etc., which often produces excessive foaming during mixing or spraying, resulting in uneven coating, surface defects and inconsistent mold release. Furthermore, these emulsions may lose stability or break down at the high temperatures encountered during die casting, thereby reducing their effectiveness over multiple casting cycles. The pre-emulsion also causes handling and logistic problems due to its large volume, short shelf life and susceptibility to microbial contamination. The prior art, when lowering the foam or Volatile Organic Compound (VOC) content, often results in reduced release performance or requires the use of complex multiple-unit formulations. In view of this, the present invention has been made. Disclosure of Invention The application provides a concentrated oil dispersion type silicon-based release agent, a preparation method and a detection method thereof, which mainly aim to solve the problems that the release agent used in the prior art contains volatile organic compounds, causes environmental and safety problems, has poor release effect and cannot meet the requirements of customers. In order to achieve the above purpose, the present invention adopts the following technical scheme: the application provides a concentrated oil dispersion type silicon-based release agent, which comprises the following components in parts by weight: 70-88 parts of silicone oil, 1-2 parts of sorbitan monooleate, 1-3 parts of fatty alcohol polyoxyethylene ether-3, 0.5-2 parts of octyl phenol polyoxyethylene, 0.5-4 parts of polyoxyethylene sorbitol trioleate, 0.1-0.5 part of polyethylene glycol, 0.5-1 part of polypropylene glycol-7, 0.05-0.15 part of antifreeze agent, 0.15-0.25 part of antirust agent and 0.15-0.25 part of antibacterial agent. In the application, silicone oil is used as a main oil phase to provide necessary lubrication and demolding characteristics for an aluminum die casting process, and the sorbic monooleate (Sorbitan Monooleate, for short SMO) is synthesized by the esterification reaction of sorbic alcohol after dehydration, and the chemical structure of the sorbic monooleate comprises hydrophilic sorbic anhydride groups and hydrophobic oleic acid long-chain alkyl groups, so that the novel aluminum die casting process has excellent emulsifying, dispersing, solubilizing and stabilizing performances, is also called Span-80, and can stabilize the oil phase and promote the initial emulsifying effect when a concentrated solution is diluted by adding water as a lipophilic nonionic surfactant. The fatty alcohol polyoxyethylene ether-3 (AEO-3) is formed by condensing fatty alcohol and ethylene oxide, and has a chemical formula of C 18H38O4 (R is C12-16 alkyl), and the CAS number is 3055-94-5 ‌. The appearance of the emulsion is colorless to yellowish transparent liquid, and the emulsion plays a role of hydrophilic surface activity and is used for enhancing the formation and stability of the water-in-oil emulsion. Octyl phenol polyoxyethylene (TX-114) is a nonionic surfactant, belongs to alkylphenol ethoxylates (APEO) family, has a chemical structure formed by polymerizing octyl phenol and ethylene oxide, and polyoxyethylene sorbitol trioleate (Tween-85) is a nonionic surfactant, has a chemical formula of C 100H188O28 and is amber oily liquid ‌ at normal temperature, and the octyl phenol polyoxyethylene and polyoxyethylene sorbitol trioleate cooperate with sorbitan monooleate and fatty alcohol polyoxyethylene ether-3 to comprehensively improve the technological properties by optimizing multiple ef