In industrial protection fields such as high-temperature anti-corrosion coatings and H-class insulating coatings, the four-dimensional indicators of "temperature range — anti-corrosion/hydrophobicity — electrical insulation — application curing" of resin materials have always been the core contradiction restricting coating life and equipment safety. Traditional epoxy resins, while providing strong adhesion and excellent anti-corrosion, have a low heat resistance ceiling (usually only F-class 155°C), easily carbonizing and decomposing at high temperatures, failing to meet the needs of long-term high-low temperature alternation. Pure silicone resins, while excellent in heat resistance, suffer from insufficient adhesion, limited chemical stability and anti-corrosion, and difficulty in room-temperature curing, making it hard to balance on-site application and high-temperature baking. With industrial equipment continuously upgrading toward high temperature, high humidity, and high corrosion environments, finding an epoxy modified silicone resin with "solid content 50±1%, viscosity 30-70s (Tu-4 cup), epoxy value 0.03-0.06, curable both at room temperature by two-component and by high-temperature baking" has become the core proposition for the refinement of domestic industrial protective silicone resins.
Addressing this,
Anhui IOTA Silicone Oil Co., Ltd. officially launches
IOTA E25 Epoxy Modified Silicone Resin. Characterized by "pale yellow to colorless transparent liquid, no mechanical impurities; solid content 50±1%; viscosity 30-70s (Tu-4 cup); epoxy value 0.03-0.06", backed by "epoxy group anti-corrosion adhesion + siloxane backbone heat-resistant hydrophobic + electrical insulation arc resistance", it serves as the "dual-cure choice" for industrial protection,
achieving the leap from "pure epoxy not high-temp resistant, pure silicone resin difficult to cure and poor adhesion" to "epoxy-siloxane hybrid dual-cure weather-resistant".
System Positioning: Epoxy Modified Silicone Resin vs. Pure Epoxy / Pure Silicone Resin
IOTA E25 belongs to the epoxy modified polysiloxane system, distinct from traditional pure epoxy resins and pure silicone resins. Traditional epoxy resins have C-C chains as the main chain, with obvious heat resistance bottlenecks; pure silicone resins, while heat-resistant, lack adhesion and anti-corrosion. IOTA E25 innovatively grafts epoxy groups (providing anti-corrosion, adhesion, chemical resistance) onto the siloxane backbone — the siloxane main chain gives intrinsic high-low temperature resistance and hydrophobicity, while the epoxy side groups greatly improve adhesion to metal substrates and coating density, thoroughly solving the industry pain points of "epoxy not heat-resistant, silicone resin not anti-corrosion and difficult to adhere".
Molecular Architecture: Epoxy Anti-Corrosion Adhesion + Siloxane Heat-Resistant Hydrophobic + Electrical Insulation
The core competitiveness of IOTA E25 stems from the precision molecular design of epoxy modified silicone resin:
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Epoxy Group Anti-Corrosion Adhesion: Epoxy value 0.03-0.06 provides excellent chemical stability and anti-corrosion; can react with curing agents such as 650 polyamide, T-31, KH550 to form a dense 3D network with strong adhesion.
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Siloxane Backbone Heat-Resistant Hydrophobic: The main chain Si-O bond has high bond energy, giving excellent high-low temperature resistance and hydrophobic moisture resistance, with outstanding weather resistance for long-term outdoor harsh environments.
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Electrical Insulation Arc Resistance: The molecular structure combines the excellent electrical insulation of silicone resin and arc corona resistance, meeting the stringent requirements of H-class insulating coatings (180°C).
Performance Leap: From "Poor Heat Resistance or Difficult Curing" to "Dual-Cure Weather-Resistant Anti-Corrosion Insulation"
Introducing IOTA E25 brings a qualitative leap to industrial protection formulations:
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High-Low Temperature and Hydrophobic Moisture Resistance: Siloxane backbone brings wide temperature range stability, excellent hydrophobic moisture resistance, protecting substrates from water vapor erosion.
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Two-Component RT/HT Dual Cure: Can be cured at room temperature by two-component (with 650/T-31/KH550) for convenient on-site construction; also can be cured by high-temperature baking to improve coating density and performance.
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H-Class Insulation Arc Resistance: Excellent electrical insulation, arc and corona resistance, suitable for H-class (180°C) insulation systems.
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Weather Resistance and Anti-Corrosion: Strong chemical stability and anti-corrosion, suitable for long-term high-temperature anti-corrosion scenarios.
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Application Flexibility: Viscosity 30-70s (Tu-4 cup), solid content 50±1%, easy for spraying and brushing; recommended solvents: butyl ester, PMA, butanol, etc.
Application Penetration: From High-Temp Anti-Corrosion to H-Class Insulation
The application boundary of IOTA E25 covers all industrial scenarios requiring "temperature-resistant anti-corrosion + electrical insulation + dual-cure application":
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High-Temperature Anti-Corrosion Coatings (Main Battlefield): Widely used as high-temperature anti-corrosion coatings to protect chimneys, exhaust pipes, boilers and other high-temperature equipment.
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H-Class Insulating Coatings: Used for H-class insulation of motors, transformers and other electrical equipment, with excellent arc and corona resistance.
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Weather-Resistant Protective Coatings: Used for anti-corrosion and weather protection of outdoor steel structures, hydrophobic and moisture-resistant, extending service life.
IOTA Technical Guide: Select Solvent, Clean Construction
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Application: Two-component room temperature curing, used with 650 polyamide (10% of total resin) or T-31 (5%); used with KH550 (5-10%) for better high-temperature resistance. Recommended solvents: butyl ester, PMA, butanol, etc., solvent should not be too weak.
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⚠️ Taboo: Dilution solvent must not contain water, sulfur compounds, pyridine and impurities, otherwise it will affect adhesion, drying and other properties; strictly prevent fire sources at processing site, strengthen ventilation (large amount of flammable and explosive solvent volatilization); equipment and utensils must be clean, prevent dust, foreign matter and water; strictly isolate from acids, alkalis, organic acid salts and amines during storage (accelerate curing, affect heat and electrical properties).
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Storage: Shelf life tentatively 6 months; store in a ventilated, cool, dry place, prevent direct sunlight; isolate from fire and heat sources; prevent serious pollution from acid and alkali liquids.
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Handling: Pale yellow to colorless transparent liquid, no mechanical impurities; viscosity 30-70s (Tu-4 cup) for easy application control; 200kg iron drum packaging.
Industry Insight: In the field of industrial protective silicone resins, the molecular design of IOTA E25 — "epoxy group anti-corrosion + siloxane heat-resistant + dual-cure application" — is the key path to achieving the trinity of "high-low temperature resistance + anti-corrosion insulation + dual-cure construction" —
the introduction of epoxy groups solves the industry pain point of pure silicone resin: "poor adhesion, insufficient anti-corrosion", while the siloxane backbone ends the application shortcoming of pure epoxy resin: "not high-temperature resistant, unable to reach H-class insulation". IOTA E25, with "solid content 50±1% + epoxy value 0.03-0.06 + viscosity 30-70s + H-class insulation" hard metrics,
fills the key supply chain link for domestic epoxy modified silicone resin in industrial protection (high-temp anti-corrosion/H-class insulation), providing a mass-producible temperature-resistant anti-corrosion high-performance epoxy silicone resin for downstream industrial coating enterprises. This confirms that domestic industrial protective silicone resins are leaping toward "pure epoxy → pure silicone resin → epoxy modified silicone resin" in terms of heat resistance and anti-corrosion insulation, with growing technical say in high-end industrial coating fields.
