On production lines of chemical fiber spinning, tire vulcanization, and engineering plastic injection, "no cracking, no coking, no fogging pollution above 300℃ for long cycles" is a threshold neither conventional dimethyl silicone oil nor regular phenyl silicone oil can cross. Dimethyl starts decomposing at 250℃; phenyl lifts the bar but still slowly outgasses and cokes in spinneret micro-holes at high heat. As high-speed spinning (POY/FDY) demands extended spinneret cleaning cycles with 300℃×24h zero coking, and tire bladder curing plus thermal oil systems crave 360℃-class stable media, sourcing an aryl-alkyl modified, odorless, 360℃-rated, atomizable yet circulatable high-temp silicone oil has become a key proposition for fiber and rubber-plastic release.
Addressing this "ultra-heat zero-coking" pain point,
IOTA (Anhui IOTA Silicone Oil Co., Ltd.) officially launches
High-Temperature Silicone Oil IOTA 256 (aryl-alkyl modified polysiloxane). With core specs of "pale yellow to colorless transparent, 100% active, viscosity 200±40 cSt (custom 200-1000 cSt), heat rating 360℃, odorless, non-hazardous," and backed by "aryl-alkyl heat chain + low-volatility anti-fog + dual-mode atomize/recirc," it emerges as the "360℃ Liquid Shield" for spinnerets, tire molding, and thermal oil loops.
Molecular Precision: The Heat Magic of Aryl-Alkyl Graft
The core competitiveness of IOTA 256 stems from its
"PDMS backbone + arylalkyl (Ar-CH₂-) side/terminal grafts" modified topology, marrying aromatic thermal stability with alkyl compatibility:
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Aryl-Alkyl Heat Embed: Aromatic rings (phenyl/naphthyl) are linked via methylene (–CH₂–) to the siloxane. The conjugated aromatic absorbs thermal energy and radicals; the –CH₂– buffer relieves steric stress of direct Si-C bond, pushing continuous service to 360℃ without explosive low-MW cyclics or sudden outgassing.
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Low-Volatility Anti-Fog: Narrow MWD, tightly end-capped; volatile loss at 300℃×24h is minimal. When atomized on spinnerets, it does not contaminate filaments nor coke on plate surfaces—cleaning cycle extends from 7 days (regular oil) to 15-30 days.
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Odorless 100% Pure: No solvent, no low-MW smell; workshop-friendly, distinct from recycled cracked silicone oils.
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Dual-Mode Use: Low-vis (200 cSt) atomizes into uniform release film; high-vis (500-1000 cSt) serves as high-temp thermal oil/gear oil in closed loops without thickening.
Performance Leap: From 250℃ Crack to 360℃ Steady
Replacing regular silicone in fiber/rubber-plastic high-temp scenes, IOTA 256 delivers a generational gap:
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Spinneret Zero Coking: 300℃ constant 24h cycles; plate residue <1/5 of regular oil; FDY denier CV stabilizes, broken ends drop.
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Tire Bladder Release: At 180-220℃ long contact, IOTA 256 withstands 360℃ transient peaks without carboning; bladder life +20%, tread surface oil-free.
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High-Temp Thermal Medium: Replaces some synthetic hydrocarbon thermal oils; superior stability at 360℃, lower system pressure—fit for mold temp controllers, reactor jackets.
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Engineering Plastic Release: PC/PA/PPS demold force drops 30%; mold carbon-buildup cycle extended.
Application Penetration: From FDY Spinning to Mold-Temp Units
IOTA 256 locks onto lines doubly sensitive to "ultra-heat + low coking":
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Chemical Fiber Spinning: POY/FDY/DTY spinneret release, plate-cleaning atomized oil, assembly mirror maintenance.
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Rubber-Plastic Vulcanization: Tire bladder release, rubber seal demold, silicone extrusion mandrel lube.
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High-Temp Conduction: Injection mold-temp thermal oil, laminator hot-plate medium, petrochemical tracing system.
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Engineering Plastics: PC/PMMA transparent demold, PPS/PEEK high-temp injection demold.
IOTA Process Guide: Atomize or Circulate
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Atomized Release: Atomize 200 cSt grade via compressed air/N₂ to spinneret (0.1-0.3 MPa); preheat plate 300℃, spray, self-film; for cleaning, wipe with same oil or re-atomize.
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Thermal Recirculation: Dehydrate before filling (80℃ vacuum 1h); run ≤360℃; periodically check viscosity/acid.
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Release Coating: Tire bladder surface wiped/sprayed with oiled velvet; avoid pooling.
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Storage: 50kg plastic drum (custom); seal 0-40℃, avoid heat/freeze; non-hazardous, 12-month shelf life.
Industry Expert Insight:
Experts note that under high-speed fiber and green-tire manufacturing pressures, release/thermal media are shifting from "dimethyl makeshift" to "aryl-alkyl custom heat-rated." IOTA 256—with "360℃ rating + aryl-alkyl embed + odorless 100%"—aligns with international high-temp silicones (e.g., Momentive YF-388 philosophy), solving the spinneret coking pain while offering a localized alternative for domestic fiber/tire lines. This milestone signifies that domestic high-temp silicones now possess hard power—from following to parallel running—on the "ultra-heat zero-coking" track.
