Ecure-11 / Ecure-27 Specialty Epoxy Curing Agents for Composite Pipelines
Product Summary
Engineered specifically for continuous filament winding processes and heavy-duty anti-corrosion composite pipes, the Ecure-11 and Ecure-27 epoxy curing agent series by Shanghai Feimi Materials deliver advanced performance for demanding industrial environments. In oil, gas, chemical processing, and offshore applications, traditional metal pipelines are prone to catastrophic failure caused by CO₂, H₂S, salt spray, and aggressive acids or alkalis. Standard epoxy systems often struggle with high processing viscosity—resulting in dry spots and incomplete fiber wetting—or insufficient pot life for large-diameter winding. The Ecure series solves these challenges with ultra-low initial mixed viscosity and exceptional fiber penetration, ensuring deep, uniform wetting of glass fiber (E-Glass) and carbon fiber reinforcement. Featuring an extended pot life, dense crosslinking network, and proven 1,000+ hour salt spray corrosion resistance, Ecure-11 and Ecure-27 deliver long-term structural load capacity and harsh-environment durability. Compatible with standard Bisphenol-A, Bisphenol-F, and Novolac epoxy resins, these systems excel in wet/dry filament winding, pultrusion, and resin infusion (VARTM).
Product Advantages
- Ultra-Low Viscosity & Superior Fiber Wetting.Eliminates delamination and dry spots. The low initial mixed viscosity promotes excellent resin flow, rapidly penetrating high-gsm glass fiber or carbon fiber tows to evacuate air pockets, preventing internal leakage and micro-cracking.
- Extended Pot Life Optimized for Filament Winding.Features a smooth, predictable viscosity buildup curve at ambient temperatures, providing processing latitude for large-diameter, long-run composite pipe winding without premature gelling.
- Superior Chemical Inertness & H₂S Resistance. High crosslink density forms a robust molecular barrier against moisture, acidic/alkaline media, and organic solvents. Specifically optimized to withstand sour gas (H₂S) and high-salinity oilfield wastewater.
- 1,000+ Hour Salt Spray Resistance for Offshore Reliability.Proven resistance against continuous salt spray, seawater erosion, and oil contamination without blistering, cracking, or delamination, significantly extending service life in marine and offshore installations.
- High Structural Load Capacity & Fatigue Resistance.Delivers exceptional hoop tensile strength and flexural modulus to composite pipes, enabling them to withstand high internal operating pressures and cyclic environmental stresses.
Typical Properties
| Products / Parameter | Ecure-11 | Ecure-27 |
|---|---|---|
| 外观 Appearance | 琥珀色或棕红色液体 Amber liquid or Brownish-red | 琥珀色或棕红色液体 Amber liquid or Brownish-red |
| 粘度(25℃,mPa.s) Viscosity | ~100 | ~100 |
| 活泼氢当量(g/mol) AHEW | 45 | 44 |
| 适合使用量(NPEL-128) Recommended Use Level | 100:24 | 100:23 |
Cured System Performance
| 项目 / Parameter | Ecure-11 | Ecure-27 | MDA |
|---|---|---|---|
| 粘度(25℃,mPa.s) Viscosity | ~100 | ~100 | 固体 |
| 凝胶时间 gel time 25℃ 150g(min) | 170 | ~600 | 500 |
| 凝胶时间 gel time 60℃ 150g(min) | 78 | 150 | |
| 玻璃化温度(℃)[1] Glass transition temperature | 156 | ~158 | 155 |
注 [1]： with Standard liquid bisphenol A epoxy resin，120℃ 1h + 150℃ 3h 固化。
Product Applications
- Oil & Gas Pipelines: Ideal for crude oil, sour gas (H₂S-containing), and produced water transport pipelines, delivering long-term resistance against CO₂, H₂S, and high-salinity brine.
- Chemical Processing Piping: Designed for aggressive chemical media including strong acids, alkalis, and organic solvents, preventing liner degradation and media permeation.
- Municipal & Wastewater Networks: Used in municipal trunk sewers and industrial effluent lines, offering excellent long-term durability against corrosive bio-waste and chemical effluents.
- Marine & Offshore Engineering: Perfectly suited for ballast water systems, seawater cooling pipes, and offshore platform piping where extreme salt spray and marine environment resistance are critical.
Handling & Safety:
- Please refer to the Safety Data Sheet (SDS / MSDS) for detailed handling and personal protective equipment recommendations.
Shelf Life & Storage Conditions:
- 12 months from the date of manufacture when stored in original, unopened containers. Keep tightly sealed in a cool, dry, and dark environment. Avoid prolonged exposure to direct sunlight, moisture, and ambient air.
FAQ
- Q1: What are the primary differences between Ecure-11 and Ecure-27, and how should I select the right system for filament winding? A: Ecure-11 is optimized for an extended pot life and ultra-low mixed viscosity, making it the ideal choice for wet filament winding of large-diameter, thick-walled composite pipes. Ecure-27 is specifically formulated for elevated glass transition temperature (Tg) and enhanced thermal-chemical resistance (such as hot acids or high-temperature oil/gas fluids). Our technical engineering team can assist you in selecting the optimal system based on your operating temperature, media compatibility, and thermal curing schedule.
- Q2: Are Ecure-11 and Ecure-27 compatible with carbon fiber winding processes? A: Yes, fully compatible. Both Ecure-11 and Ecure-27 feature low surface tension and superior wetting capability. They provide rapid, void-free impregnation not only for conventional E-Glass fibers but also for high-modulus carbon fiber tows, significantly increasing the Interlaminar Shear Strength (ILSS) and burst pressure rating of high-pressure carbon composite pipes.
- Q3: Can Shanghai Feimi Materials customize gel times and curing profiles for specific pipe manufacturing lines? A: Absolutely. We operate state-of-the-art fine chemical R&D laboratories and offer fully customized formulation support. We can tailor gel times, reaction kinetics, exotherm control, and step-curing profiles (e.g., 80°C → 120°C → 150°C) to match your exact line speed, oven length, and process requirements.
