On the "oil-phase ↔ emulsion" paired spectrum of modified silicones, the prior
IOTA-28027E is this molecule emulsified into water (50% solids, nonionic, 200× dilutable) for factory spray; this
IOTA 28027 is the same molecule's
oil-phase body: long-chain alkyl (C16-22) + arylalkyl/phenyl co-grafted PDMS, pale yellow transparent, multi-viscosity 600-4500 cSt, directly serving as die-cast release base oil, high-temp metal lube stock, PP/PA internal slip, spin-finish component, and hair-care oil phase. The relation is "lube oil" vs "lube emulsion spray" — 28027 is the core, 28027E is its watered production form.
Addressing this "arylalkyl dual-graft oil" slot,
Anhui IOTA Silicone Oil Co., Ltd. (IOTA) releases
Long-chain Alkyl Aryl Polysiloxane IOTA 28027. Defined by core parameters—
ter-copolymer Me₂SiO / RMeSiO / PhMeSiO, phenyl lifts heat/anchors film, long alkyl lipophilic-adheres to metal—it carries the triple attributes of
"high-temp low-char + full organic miscibility + direct post-print after demold," serving as the "arylalkyl slip-oil anchor" for die-cast/hot-forge base oil, hard-metal boundary lube, rubber-plastic internal release, filament spinning, and skin/hair oil phase.
Molecular Architecture: Me₂SiO / RMeSiO / PhMeSiO Ter-Copolymer
IOTA 28027 writes as (CH₃)₃SiO–[(CH₃)₂SiO]ₐ[R(CH₃)SiO]ᵦ[Ph(CH₃)SiO]꜀–Si(CH₃)₃, R=C16-22:
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Phenyl/Arylalkyl Heat Lift: Aromatic conjugation absorbs thermal energy, Si–Ph stronger than Si–C(methyl); at 300-320℃ mold temp no cracking, carbon residue far below mineral-oil release; arylalkyl (benzyl/phenethyl) softer than pure phenyl, film non-brittle.
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Long Alkyl Lipophilic Adherence: C16-22 side chain miscible with mineral oil/wax/resin at any ratio, spreads into load-bearing film on Al/Mg mold, no回流 no droplet under high-pressure shot, stable ejection.
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PDMS Backbone Silicone Feel: Siloxane segment keeps low friction, hydrophobic (>100°), weather-stable, part surface glossy non-harsh.
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Multi-Viscosity Gradient: 600 cSt (spray base, pumpable) → 4500 cSt (grease base, thick-film load); pick by mold temp/pressure.
Performance Leap: From Pure Alkyl Silicone to Arylalkyl Dual-Graft
Versus ordinary long-chain alkyl silicone (no phenyl), 28027 via aromatic insertion:
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Temp ceiling from ~200℃ to 300-320℃ (die-cast ready), carbon slag markedly less;
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Wider miscibility with synthetic resin, aromatic solvent, mineral oil;
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Post-demold workpiece directly printable, paintable, platable, hot-embossable without wash.
Application Penetration: From Al Die-Cast to Shampoo Oil Phase
IOTA 28027 precisely lands on the interface needing
"high temp + metal + organic miscible + free post-treatment":
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Die-Cast/Hot Work: Al/Mg/Zn die-cast release base oil (self-emulsify or solvent dilute 2-10%), hot-forge lube stock.
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Metal Lube: Stainless-titanium hard-pair boundary lube, aluminum-machine lube oil, high-temp screw carrier (no extreme-pressure add needed).
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Rubber-Plastic Mod: PP/PE/PA internal release & antiblock (1-2% masterbatch), TPE with white mineral oil 1:1.
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Filament Spinning: Polyester/nylon high-speed spin-finish component, cohesion/smooth, no char on hot godet.
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Daily Oil Phase: Hair conditioner (spread/seal/no fake slip), skin emollient (miscible with wax/ester).
Die-cast release blenders read 28027 plainly: it is the "oil core" of 28027E and the domestic base oil for solvent-type die-cast release — phenyl pushes temp to die-cast band, long alkyl bites film to metal, PDMS leaves slip/hydrophobic, and demolded part goes straight to electrophoretic paint without cratering. Self-emulsifiers buy 28027 to make emulsion; line plants buy 28027E; two paths, one molecule.
