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Advanced Polymer Release Technology

Silicone Oil For Mold Release Agents

High-performance polydimethylsiloxanes, reactive organo-modified fluids, and precision specialty emulsions engineered for clean demolding, superior surface finish, and ultra-low interfacial friction across heavy industrial manufacturing.

Precision Release Fluids

Featured Silicone Oils For High-Efficiency Mold Release

Optimized functional polymers engineered for polyurethane casting, elastomeric compression, thermoplastic de-nesting, and composite laminate separation.

BY-209 Amino-modified silicone fluid for Mold Release Agents
Internal & External Release

BY-209 Amino-modified Silicone Fluid

Exhibits superior affinity to metal mold cavities, creating a semi-permanent crosslinked release film with outstanding heat resistance and anti-stick properties.

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OH-Hydroxy, Terminated Silicone Fluid for Demolding
Elastomer Demolding

OH-Hydroxy Terminated Silicone Fluid

Reactive silanol end-groups enable condensation curing on mold tooling, offering exceptional cycle life, non-transfer demolding, and zero mold fouling.

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Vinyl Silicone Oil for High-Temp Mold Release
Addition Cure Systems

Vinyl Silicone Oil CAS: 70900-21-0

High vinyl content enables rapid platinum-catalyzed curing for semi-permanent composite mold release agents with remarkable thermal longevity.

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Hydrogen-terminated Silicone Oil Crosslinker
Crosslinking & Hydrophobicity

Hydrogen-Terminated Silicone Oil

Essential Si-H functional crosslinker used to adjust film hardness, release force curves, and curing kinetics in water-borne mold release formulations.

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Interfacial Chemical Engineering

The Tribology and Chemistry of Silicone Oil in Mold Release Systems

Understanding why silicone fluids outperform conventional organic release agents in extreme thermal and shear regimes.

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Ultra-Low Surface Tension

Polydimethylsiloxane (PDMS) backbones exhibit exceptionally low critical surface tensions (20-22 mN/m). This thermodynamic characteristic allows silicone oil to rapidly spread across complex mold geometries, wetting micro-crevices and forming a uniform, low-energy anti-stick interface.

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Thermal & Oxidative Integrity

The inorganic silicon-oxygen backbone (-Si-O-Si-) possesses a bond dissociation energy of ~445 kJ/mol—significantly higher than typical C-C bonds (~346 kJ/mol). This molecular stability prevents carbonization, smoke generation, and thermal degradation at temperatures exceeding 220°C to 280°C.

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Tailored Slip & Slip-Stick Reduction

By varying kinematic viscosity from 50 cSt up to 100,000 cSt or introducing functional amino/alkoxy groups, the release force can be dynamically engineered. This prevents micro-tearing, surface orange-peel defects, and premature demolding slip in precision molding.

Performance Characteristic Silicone Oil Formulations (PDMS/Modified) Hydrocarbon / Microcrystalline Waxes Metallic Stearates (Zinc/Calcium)
Continuous Thermal Limit -50°C to +250°C (Non-yellowing, zero ash) Up to 110°C (Risk of smoking & melt runoff) Up to 140°C (Decomposition & residue buildup)
Demolding Multiple Cycles High (Up to 15-20 cycles for semi-permanent) Low (Single-cycle reapplication needed) Moderate (Frequently causes mold fouling)
Post-Demolding Surface Finish Ultra-clean, high-gloss or matte control Waxy residue, requires solvent wash Powdery surface haze, interferes with bonding
Environmental Safety & VOCs Water-emulsifiable, VOC-compliant options High VOC solvent carrier dependency Particulate dust inhalation risks
Global Manufacturing Applications

Precision Demolding Across Core Industrial Sectors

From automotive polyurethane foams to aerospace composite structures, silicone release chemistry empowers zero-defect production.

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Polyurethane (PU) Molding & Automotive Interiors

High-resilience (HR) seating foams, integral skin steering wheels, microcellular polyurethane shoe outsoles, and sound-insulating headliners require ultra-precise cell structure stability. Specialty amino-modified silicone fluids and emulsion-grade methyl hydrogen oils prevent skin tearing while eliminating post-finishing adhesion failures.

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Tire Vulcanization & Rubber Compression

Inside tire bladder treatments and tread curing molds face aggressive sulfur-vulcanization chemistry and high pressures (18-25 bar). Hydroxyl-terminated and phenyl-modified silicone oils form durable crosslinked barrier coats, preventing green tire sticking and ensuring deep tread pattern fidelity without carbon-fouling.

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Die Casting & High-Pressure Metal Forming

In aluminum, magnesium, and zinc alloy die casting at temperatures exceeding 650°C, high-viscosity silicone emulsions and branched organosilicone fluids act as thermal barriers and instantaneous release lubricants, shielding steel dies from molten soldering, thermal cracking, and cavitation erosion.

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Aerospace Carbon Fiber & SMC Composites

Epoxy, bismaleimide (BMI), and vinyl ester resins cured under autoclave pressure require semi-permanent release systems. Vinyl silicone oils combined with hydrogen-terminated siloxanes crosslink directly onto tool surfaces, allowing multiple autoclave pulls without silicone transfer onto parts to be painted.

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Electronics & Liquid Silicone Rubber (LSR)

Micro-molding of optical lenses, silicone gaskets, and medical device connectors requires pristine optical clarity and strict biocompatibility. Low-volatility silicone fluids provide friction-free part release without leaching or interfering with secondary plasma activation and bonding processes.

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Precast Concrete & Architectural Elements

Emulsified methyl hydrogen silicone fluids react with alkaline concrete surfaces, producing a hydrophobic silicone network that prevents wet concrete from sticking to steel or timber molds while completely preventing surface pinholes, efflorescence, and moisture discoloration.

Market Dynamics & Chemical Innovation

Emerging Trends: Water-Borne Emulsions, PFAS Replacement & Smart Spraying

How modern industrial chemical engineering is shaping the next decade of sustainable, high-efficiency mold release formulations.

Transition from Solvent Carriers to Nano-Emulsions

Strict global VOC mandates, including the EU REACH revisions and US EPA Clean Air regulations, are forcing formulators away from solvent-diluted silicone sprays toward water-based micro-emulsions. Utilizing non-ionic polyether-modified surfactants, high-shear homogenizers produce droplet distributions under 200 nm. These nano-emulsions achieve rapid water flash-off on heated tools, leaving behind an uninterrupted, sub-micron silicone lubricant film.

Additionally, the chemical phase-out of Per- and Polyfluoroalkyl Substances (PFAS) has placed silicone oil at the forefront of non-fluorinated release alternatives. By blending high-molecular-weight vinyl fluids with hyperbranched silicone resins (MQ resins), release values comparable to fluoropolymers are achieved without bioaccumulation or toxic pyrolysis byproducts.

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Key Engineering Formulation Attributes:

  • Kinematic Viscosity Tuning: 100 cSt to 60,000 cSt blends balance atomization behavior with boundary layer lubrication film thickness.
  • Functional End-Capping: Silanol (OH), hydride (Si-H), and amino groups permit chemical coupling to metallic substrate tooling.
  • Zero Mold Buildup: Minimal ash residue at sustained processing temperatures eliminates downtime for mechanical dry-ice mold cleaning.
  • Automated Robotic Spraying Compatibility: Low-viscosity concentrates dilute reliably in DI water without phase inversion or nozzle clogging.
Global Manufacturing Exporter

Welcome to Bayee

Hangzhou Bayee Chemical Co., Ltd. started chemical products exporting from 2001, manufacturers based exporter focused in chemical products covering Silicone series, Phosphorus series including Silicone Monomers, Cyclosiloxane, Silicone Oils, Agro Chemicals, Fire Retardants & Auxiliaries etc. Company has direct Import & Export right, Dangerous Cargo Permission Certificate. Based on 20+ years exporting history and persistent improvements, we have now grown and developed into a well known & good reputation exporter with ISO 9001:2015, AAA Credit certified company, also granted by local government as Healthy Enterprise, and A level Tax Ranking.

Company Details as Below:

  • Social Credit Code: 91330108759549090L
  • Dangerous Cargo Cert: [2025] 06002608
  • Import & Export Cert: 02306457
  • AAA Credit Rating: BRC24AAA10012R2S
  • ISO 9001:2015 Certificate: BRC2024Q10513R2S
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Corporate Infrastructure

About Bayee • Company Profile

Strategic manufacturing sites across China driving supply continuity, yield optimization, and global competitive cost structures.

Based on strategic factories in Zhejiang, Jiangsu, Shandong, Anhui, Jiangxi, Hubei, Hunan, Hebei and Henan provinces etc, we export not only good quality products, competitive EXW costs, but also honesty, safety and international philosophies to customers. We work tightly with competitive production sites across whole China, who have special advantages, located in professional industrial areas, close to raw material bases, locally supplied with energy - gas or steam pipe connected with neighbour enterprises in same areas to reduce transportation costs. Our factories have advanced ideas in technique crafts for higher yield production, unit consumption reducing from raw materials, also re-used the by-products for own downstream production for other products. By the way, we always keep close observation about raw material changing trend, react actively with factories shoulder by shoulder from organizing raw material at good times to secure more competitive production costs and share spaces with customers helping win their market shares. At the same time, we have wide connection with Chinese powerful chemical institute organizations for testing and supervising quality control in production process.

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International Reach

BUSINESS & GLOBAL SUPPLY NETWORK

Up till now we’ve developed and supplied to many countries and areas all over the world, with main markets in European countries (Germany, Italy, UK, Spain, Ukraine, Russia, Poland, etc.), USA, South America, Mid East, South-east Asia, Australia, etc. Also seeking more strategic partners and customers under mutual benefits and work through the whole purchasing chain.

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Frequently Asked Questions

Technical Guidance for Silicone Mold Release Agents

Quick answers to common questions regarding chemistry, dilution rates, post-processing, and mold maintenance.

Q1: How do I choose between amino-modified and hydroxyl-terminated silicone fluids?

Amino-modified silicone oils (like BY-209) provide outstanding metal affinity, forming durable semi-permanent films suited for high-temperature rubber and polyurethane molding. Hydroxyl-terminated fluids are preferred in condensation-cure systems where chemical bonding to hydroxyl groups produces non-migrating release coatings.

Q2: Will silicone oil release agents interfere with post-molding painting or gluing?

Conventional non-reactive PDMS can transfer to molded surfaces and hinder paint wetting. However, by employing organo-modified (polyether or amino-functional) silicone fluids or reactive crosslinking vinyl/hydride systems, silicone transfer is minimized, preserving post-process adhesion.

Q3: What is the standard dilution ratio for water-based silicone release emulsions?

Most silicone oil concentrates (35% to 60% active solid content) are diluted with demineralized water at ratios between 1:10 and 1:50, depending on mold complexity, operating temperature, and cycle frequency requirements.

Q4: How does Methyl Hydrogen Silicone Fluid function in release formulations?

Methyl Hydrogen Silicone Fluid (MH Fluid) contains reactive active Si-H groups. Under heat or organotin/platinum catalyst presence, it crosslinks into a hydrophobic, tough elastomeric membrane, providing excellent waterproof release performance in building materials, rubber profiles, and shell molding.

Comprehensive Silicone Catalog

Silicone Fluids & Crosslinkers For Mold Release Formulations

Select from Bayee's full line of silicone oils, specialty functional fluids, and crosslinking agents optimized for modern demolding systems.

BY-209 Amino-modified silicone fluid
Semi-Permanent Demolding

BY-209 Amino-modified Silicone Fluid

Ideal for formulation of durable release agents in rubber, plastic, and die-casting mold maintenance.

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OH-Hydroxy, Terminated Silicone Fluid
Condensation Cure Release

OH-Hydroxy, Terminated Silicone Fluid

Reactive silanol fluid creating flexible release coatings with excellent thermal and chemical resistance.

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Vinyl Silicone Oil CAS Number: 70900-21-0
Addition Cure Base

Vinyl Silicone Oil CAS: 70900-21-0

High-clarity vinyl-functional polysiloxane for high-performance platinum-catalyzed mold release formulations.

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Hydrogen-terminated silicone oil
Si-H Chain Extender

Hydrogen-terminated Silicone Oil

Precision telechelic crosslinking agent providing controlled hardness and release force adjustment.

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Methyl Hydrogen Silicone Fluid (MH Fluid)
Waterproof Crosslinker

Methyl Hydrogen Silicone Fluid (MH Fluid)

High-active hydrogen content fluid for building material mold release, dry powder hydrophobing, and paper coatings.

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Amino Silicone Emulsion Base
PU Foam Formulations

BY-209 For Polyurethane Release Agents

Engineered for open-pour and RIM automotive polyurethane formulations requiring ultra-fine surface cell skins.

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Vinyl Silicone Oil for Composite Tooling
Composite Demolding

Vinyl Silicone Oil For Composite Tooling

High thermal stability resin base for multi-cycle epoxy prepreg and vacuum infusion demolding cycles.

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Silanol Terminated Fluid for Tire Curing
Tire & Rubber Curing

OH Silicone Fluid For Bladder Lubricants

Exceptional heat stability under steam vulcanization conditions, maximizing tire bladder longevity.

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