Epoxy Composite System MEP-14 / Ecure-35 / Ecat-05 — Engineered Resin Solution for Pultrusion, Compression Molding, and Filament Winding
Product Summary
Shanghai Feimi Materials specializes in the R&D and supply of high-performance epoxy composite systems: MEP-14 (Base Resin), Ecure-35 (Curing Agent), and Ecat-05 (Accelerator). Featuring ultra-low initial mixed viscosity and exceptional fiber wet-out for both glass and carbon fibers, this system delivers an extended ambient pot life alongside rapid mid-to-high temperature curing. Designed for high-demanding applications including hydrogen storage cylinders, aerospace rocket motor cases, pressure vessels, wind turbine main spars, pultruded profiles, EV battery enclosures, and automotive lightweight structural parts. Custom formulation services available.
Detailed Description
Feimi Materials’ proprietary epoxy system (MEP-14 / Ecure-35 / Ecat-05) is purpose-engineered for automated composite manufacturing processes including Filament Winding, Pultrusion, and Compression Molding (SMC/PCM). By combining high structural strength with process efficiency, this system addresses key industry pain points.
In high-end sectors such as wind energy, electric vehicles (EV), industrial pressure vessels, and aerospace, composite components demand extreme mechanical performance and high throughput. Conventional epoxy systems often suffer from high viscosity (leading to poor penetration in dense fiber rovings) or short pot life (causing premature gelation and resin waste).
Leveraging latent catalytic crosslinking technology, Feimi’s resin system achieves exceptionally low mixed viscosity and excellent fiber wet-out at ambient temperatures. It maintains long-term stability in the dip tank while enabling rapid thermosetting under thermal conditions—delivering finished composite parts with superior tensile strength, flexural modulus, and toughness.
Key Advantages
- Ultra-Low Viscosity & Deep Fiber Wet-Out (Eliminates Dry Spots)
Exceptionally low mixed viscosity enables fast, deep impregnation of high-density glass and carbon fiber filaments, degassing micro-bubbles and preventing voids or delamination in heavy-section composites.
- Extended Room-Temperature Pot Life (Minimizes Material Waste)
Exhibits outstanding physical and chemical stability at ambient temperatures. Non-crystallizing, non-settling, and resistant to viscosity spikes, allowing a wider processing window while reducing machine cleaning downtime and resin scrap.
- Rapid Thermal Curing (Boosts Production Throughput)
Formulated with Ecat-05, a specialized latent accelerator that triggers ultra-fast crosslinking under heat. Dramatically reduces pultrusion line pull speeds and compression mold cycle times.
- Superior Mechanical Properties & High Tg.Forms a dense, uniform crosslinked polymer network that delivers superior tensile/flexural strength, impact resistance, and high Glass Transition Temperature (Tg) to meet harsh aerospace and heavy-duty standards.
- Broad Process Adaptability & Customizability.Versatile formulation ratios allow seamless adaptation for high-pressure hydrogen cylinder winding, wind turbine spar cap pultrusion, and EV battery pack thermal compression molding (SMC/PCM).
MEP-14 (Base Epoxy Resin) - Typical Properties
| Item | Specification |
|---|
| 产品型号 | MEP-14 |
| 外观 Apperance | 透明液体Coloress |
| 颜色（Gardner） | < 3 |
| 粘度（25℃，mPa.s） | ~2500 |
| 环氧当量 EEW（g/mol） | 180 |
MEP-35 Curing agent typical properties
| Item | Specification |
|---|
| 产品型号Produts | Ecure-35 |
| 外观（Appearance） | 淡黄色透明液体Coloress |
| 颜色（Color, Gardner） | < 4 |
| 比重（Density, 25℃，g/cm³） | 0.977 |
| 粘度（Viscosity, 25℃，mPa.s） | ~85 |
| 当量（g/mol） | 140 |
| 推荐用量（NPEL128 : Ecure-35） | 100 : 73 |
Ecat-05 Typical properties
| 项目 / Parameter | 指标 / Specification |
|---|
| 外观 Appearance | 淡黄色液体或者固体 |
| 比重（25度）g/cm3 Specific gravity | ~1.13 |
| 熔点 Melting point (25℃) | ~32℃ |
| 含水率 % Water content | <0.3 |
系统料固化后的性能
| Item | Specification |
|---|
| 混合粘度Mixer viscosity（25℃，mPa.s） | 600 ~ 900 |
| 可操作时间 Open time（40℃，h） | > 12 |
| 凝胶时间 Geltime（120℃，min） | ~8 |
| 玻璃化转变温度Tg（℃） | 143 |
| 弯曲强度（Flexural strength，MPa） | 125 |
| 拉伸强度（Tensile strength，MPa） | 87 |
| 延伸率（Elongation，%） | 5.7% |
| 拉伸模量（Tensile modulus，MPa） | 3200 |
| 吸水率（Water Absorption，%） | 0.4%（水浸泡10天 / ten days in H₂O） |
| 固化条件说明（Curing condition） | 110℃ 1h + 140℃ 5h |
Products Applications
- Filament Winding Processes. Ideal for industrial high-pressure piping, anti-corrosive vessels, aerospace rocket motor cases, Type III/IV CNG & Type IV hydrogen storage tanks, carbon fiber drive shafts, and composite tubes.
- Pultrusion Processes.Engineered for wind turbine blade main spars (carbon/glass pultruded plates), high-voltage electrical insulating cross-arms, bridge decks, and heavy structural building profiles.
- Compression Molding (SMC / PCM / RTM).Suitable for Electric Vehicle (EV) top/bottom battery pack enclosures, automotive lightweight crash beams, structural chassis components, and industrial electrical enclosures.
Storage & Handling Guidelines:
- Refer to the Product Safety Data Sheet (SDS / MSDS) for detailed safety instructions.
Shelf Life & Conditions:
- Minimum 24 months from manufacturing date when stored in original unopened containers in a cool, dark, and dry environment. Protect from moisture and direct exposure to air.
FAQ
- Q1: How do I tune the curing rate and pultrusion line speed using the MEP-14 / Ecure-35 / Ecat-05 three-component system?
A: By micro-adjusting the dosage of the latent catalyst Ecat-05, you can precisely control the reaction onset and exothermic peak across different thermal zones of the pultrusion die (preheating, gelation, and full curing zones). For thick-walled profiles or high-speed pultrusion lines, increasing Ecat-05 significantly accelerates in-mold curing, maximizing line speeds while ensuring an ultra-smooth surface finish.
- Q2: How does this resin system manage exothermic heat during SMC/PCM thermal compression molding for EV battery enclosures?
A: The MEP-14 system incorporates a staged exothermic molecular design. During high-temperature compression molding (e.g., at 120°C), crosslinking occurs rapidly while heat release remains controlled and gradual. This prevents localized heat concentration, eliminating warping, thermal deformation, or internal stress cracking in large, thin-walled structural shells.
- Q3: Can Feimi Materials customize formulations for specific Tg (Glass Transition Temperature) or viscosity requirements?
A: Yes, absolutely. Feimi Materials operates a fully equipped Composite Application Laboratory. We tailor resin formulations—including Tg adjustments (ranging from 120°C to 180°C), viscosity tuning, and cure schedules—based on your target fiber reinforcement (carbon, glass, or aramid) and specific molding equipment. Contact our R&D team for custom lab testing and sample preparation.
