Can Phenyl Silicone Oil Be Used as a Release Agent?

Temperature Resistance and Stability Considerations in Release Agent Selection

In processes such as plastic injection molding, rubber vulcanization, composite material forming, and certain metal die-casting operations, release agents serve to isolate the product from the mold, enabling smooth demolding while protecting the mold surface and extending its service life. Since molds often operate at elevated temperatures, conventional mineral oil-based or silicone oil-based release agents are prone to volatilization, migration, or carbonization under high heat. This not only causes release performance to degrade over production cycles but can also lead to carbon deposits on the mold surface, affecting product appearance and dimensional consistency. Therefore, under conditions of prolonged high temperature or repeated molding cycles, the thermal stability and low volatility of the release agent itself become key indicators of its suitability.

Why Phenyl Silicone Oil Is Suitable as a Release Agent

Phenyl silicone oil incorporates phenyl groups into its siloxane backbone. The phenyl ring structure enhances the rigidity and thermal stability of the molecular chain, allowing it to maintain relatively stable physical and chemical properties at elevated temperatures. Compared to conventional methyl silicone oils, phenyl silicone oil exhibits lower volatilization loss and stronger resistance to thermal decomposition in high-temperature environments—forming the foundation for its use as a release agent. As a release medium, phenyl silicone oil can form a uniform, stable isolation film on the mold surface, offering excellent lubricity and consistent release performance over repeated cycles, thereby reducing product sticking and surface tearing, and helping maintain continuous, stable demolding throughout production.

IOTA 255: Phenyl Silicone Oil for Release Applications

IOTA 255 is a phenyl silicone oil product from Anhui IOTA Silicone Oil Co., Ltd., designed for release and related processes requiring high-temperature resistance, low volatility, and stable lubricity.

• Stable Temperature Resistance: IOTA 255 can operate continuously within the 250°C to 300°C range. It resists thermal decomposition under repeated mold heating conditions, helping maintain consistent release performance.
• Low Volatility Loss: During high-temperature molding, IOTA 255 exhibits minimal volatilization, reducing medium consumption and lowering the risk of contamination and carbon deposits caused by oil evaporation and migration.
• Excellent Release Consistency: The isolation film it forms on the mold surface is uniform with moderate adhesion, providing sustained lubrication and isolation over multiple molding cycles, reducing the need for frequent reapplication.
• Stable Physical Properties: IOTA 255 is a colorless, transparent liquid with good fluidity and spreading characteristics, making it easy to formulate or apply.

Typical Release Application Scenarios

IOTA 255 phenyl silicone oil can be used as a release medium in the following high-temperature or repeated molding scenarios:

• Engineering Plastic Injection Molding: Suitable for engineering plastic molding with temperature resistance requirements, facilitating smooth demolding while reducing mold sticking and surface tearing.
• Rubber Vulcanization: Provides isolation and lubrication on vulcanization mold surfaces, accommodating higher vulcanization temperatures.
• Composite Material and Resin Forming: Serves as a release isolation medium, assisting in the removal of formed products from molds.
• High-Temperature Mold Protection: Forms a stable isolation layer on repeatedly heated molds, reducing carbon deposits and wear.

Note: Silicone-based release agents may leave an oil film residue on the product surface, which can affect subsequent processes such as painting, printing, bonding, or electroplating. If secondary processing is required, we recommend conducting compatibility tests based on your specific process or consulting with technical personnel during the selection phase to determine suitability.

Technical Specifications

表格

Parameter	Value
Appearance	Colorless, transparent liquid
Product Type	Phenyl silicone oil
Continuous Service Temperature	250°C – 300°C
Key Attributes	Excellent heat resistance, low volatility, stable release consistency

About IOTA

As a full-chain organosilicon solutions provider, Anhui IOTA Silicone Oil Co., Ltd. is committed to delivering end-to-end technical services—from selection consulting to application support. IOTA 255 is one of our phenyl silicone oil products developed for high-temperature, low-volatility, and release applications. If you are seeking a suitable release medium for high-temperature molding, IOTA 255 is worth considering for your selection. For detailed Technical Data Sheets (TDS), Safety Data Sheets (SDS), or application consulting, please visit our website or contact our technical team.

---

FAQ

Can phenyl silicone oil be used as a release agent?
Yes. Phenyl silicone oil offers excellent thermal stability and low volatility loss, forming a stable isolation film on mold surfaces, making it well-suited as a release medium for high-temperature and repeated molding conditions. What are the advantages of using IOTA 255 as a release agent?
IOTA 255 can operate continuously within the 250°C to 300°C range, resists decomposition at high temperatures, exhibits low volatility, and delivers stable release consistency over repeated cycles—helping reduce product sticking and mold carbon deposits. Which release scenarios is IOTA 255 suitable for?
It is suitable for engineering plastic injection molding, rubber vulcanization, composite material and resin forming, high-temperature mold protection, and other release applications requiring high-temperature resistance. What is the difference between phenyl silicone oil and conventional methyl silicone oil as release agents?
The phenyl groups in the molecular structure of phenyl silicone oil enhance thermal stability and resistance to thermal decomposition. Under prolonged high-temperature conditions, it provides more stable release performance with lower volatility loss compared to methyl silicone oil. Will using silicone-based release agents affect subsequent processing?
Silicone release agents may leave an oil film residue on the product surface, potentially impacting subsequent painting, printing, bonding, or electroplating. If secondary processing is required, we recommend conducting compatibility tests or consulting with technical personnel beforehand. What does IOTA 255 look like?
IOTA 255 is a colorless, transparent liquid with good fluidity and spreading characteristics, making it easy to apply or formulate. What packaging sizes are available for IOTA 255?
Available in 1 kg plastic bottles, as well as 5 kg, 25 kg, and 50 kg plastic drums and 200 kg steel drums. Is IOTA 255 a hazardous material? How should it be stored?
It is transported and stored as a non-hazardous material. It should be kept in a moisture-proof warehouse, protected from sunlight, with a storage temperature range of -40°C to 50°C. How can I obtain technical documentation for IOTA 255?
Visit the Anhui IOTA Silicone Oil Co., Ltd. website or contact our technical team for complete Technical Data Sheets (TDS) and Safety Data Sheets (SDS).

High temperature resistant silicone oil IOTA 255-IOTA