MEP-12 / Ecure-33 Epoxy Potting Resin System for UF Membranes & Hydrogen Fuel Cell Humidifiers
Product Summary
Shanghai Feimi Materials specializes in R&D and manufacturing of high-performance epoxy potting resin systems (MEP-12 / Ecure-33) engineered for ultrafiltration (UF) membrane modules and hydrogen fuel cell humidifiers. Features ultra-low ion extraction, minimal capillary wicking, and low exothermic heat generation—effectively eliminating fiber thermal damage ("fiber burning"). Excellent adhesion strength to plastic and metal housings with superior resistance to hydro-thermal aging. Non-toxic, low odor, and ideal for large-scale industrial potting and municipal water treatment membranes. Custom formulations tailored to your process parameters. the MEP-12 / Ecure-33 two-component epoxy potting compound system is an engineering-grade resin specifically designed to meet the rigorous potting and end-cap sealing requirements of large-scale Ultrafiltration (UF) membrane modules and Fuel Cell Humidifiers. During the manufacturing of membrane modules and humidifiers, conventional potting resins often suffer from significant technical drawbacks: excessive capillary wicking (which reduces active filtration surface area), high exothermic heat peaks during curing (causing fiber melting or degradation), and insufficient adhesion to module housings (leading to cross-contamination or bypass leakage). The MEP-12 / Ecure-33 system overcomes these industry pain points through tailored reaction kinetics and interfacial tension optimization. It delivers an exceptionally low capillary wicking height and a gentle exothermic profile, preserving hollow fiber integrity while ensuring high mechanical strength, permanent housing adhesion, and long-term resistance to hydro-thermal aging. Formulated without harsh volatiles, it is non-toxic and low-odor, making it the ideal choice for industrial water treatment and core hydrogen fuel cell components. Composed of a high-performance epoxy resin (MEP-12) and a specialized hardener (Ecure-33), this system features low initial viscosity and extended pot life. It ensures superior wetting and bonding across various hollow fiber materials (including PVDF, PES, PS) and structural shell/casing materials (such as UPVC, ABS, PMMA, Aluminum, and Stainless Steel).
Product Advantages
- Precision Capillary Wicking Control – Maximize Active Surface Area。Utilizes proprietary surface tension matching technology to effectively suppress resin wicking along hollow fiber capillaries. Prevents "dead membrane" areas, maximizing effective active surface area, water flux, and humidification efficiency.
- Ultra-Low Curing Exotherm – Zero Fiber Burn Risk。Optimized curing kinetics ensure an extremely smooth temperature rise during large-volume potting. Completely avoids thermal degradation or fiber melting ("fiber burning") caused by localized heat buildup in large membrane modules.
- High Adhesion Strength – Prevent Bypass Leakage。Provides outstanding chemical and physical bonding to UPVC, ABS, PMMA, aluminum alloy, and stainless steel housings. Withstands hydraulic shock (water hammer) and differential pressure, eliminating end-cap cracking and internal bypass leaks.
- Superior Hydro-Thermal & Chemical Stability。Forms a highly crosslinked matrix resistant to hydrolysis, powdering, and chemical degradation under continuous high moisture, frequent backwashing, and harsh fluids, ensuring multi-year operational lifespans.
- Eco-Friendly & Safe Handling。VOC-free formula, non-toxic and non-irritating. Safe for production personnel and compliant with stringent environmental standards for potable water treatment and hydrogen energy applications.
Typical Properties
| 项目 / Parameter | MEP-12 | Ecure-33B |
|---|---|---|
| 外观 Appearance | 透明液体 | 琥珀色液体 |
| 色泽 Gardner Color | <3 | <11 |
| 粘度 Viscosity (25℃, mPa.s) | 4000~5500 | 800~2000 |
| 环氧当量 EEW (g/mol) | 165~175 | — |
| 活泼氢当量 AHEW (g/mol) | — | 90 |
| 配比 Ratio (A:B 质量比) | 100:50 |
产品固化性能
| 项目 / Parameter | MEP-12 / Ecure-33 |
|---|---|
| 混合比例 A:B (质量比) | 100:50 |
| 混合粘度 Viscosity @25℃ (mPa.s) | 3000~4000 |
| 固化条件 Cure Condition | 25℃ 8小时 + 100℃ 2小时 |
| 凝胶时间 Gel time 150g (min) | 150~200 |
| 膜丝是否变色 Membrane Color Change | 不变色，不发红 |
| 150g 发热最高温度 (℃) Max Exotherm Temp | 40~50 |
| 爬胶高度 (cm) Wicking Height | <=1.5 |
| 膜丝粘接强度 Fiber Adhesion Strength | 拔丝断 |
| 固化物硬度 Hardness (Shore D) | 85~90D |
Target Applications
- Industrial & Municipal UF Membrane Modules: Ideal for end-cap potting and root sealing of large pressurized shell-and-tube modules and submerged hollow-fiber membrane cassettes.
- Hydrogen Fuel Cell Humidifiers: Precision encapsulation and sealing of hollow fiber membrane cores for automotive and stationary fuel cell humidifiers.
- RO / NF Membrane Element Encapsulation: End-plug sealing and outer wrap potting for Reverse Osmosis and Nanofiltration modules.
- Large-Scale Industrial Potting: Potting for transformers, large inductors, water pumps, and electrical devices requiring low exotherm, low stress, and deep section cure. Ecure-17 is a modified amine curing agent, ideal for PVDF ultrafiltration membrane filament epoxy potting adhesive.
Handling Instructions:
Please refer to the Safety Data Sheet (SDS) for detailed safe handling practices.
Shelf Life & Storage:
Minimum 12 months from manufacturing date when stored in original unopened containers. Store in a cool, dry, shaded environment (5–25°C). Avoid exposure to moisture and direct atmospheric air.
FAQ
- Q1: How does MEP-12 / Ecure-33 achieve "low capillary wicking" while preventing "fiber burn"? A: By tuning resin rheology and interfacial surface tension, the fluid thoroughly wets the fibers and housing without traveling up the membrane micropores via capillary action. Additionally, the system incorporates latent curing technology that flattens the exotherm peak, preventing localized thermal spikes during mass potting and protecting sensitive hollow fibers from melting or structural breakdown.
- Q2: How well does this epoxy bond to UPVC or ABS housings? Is a primer required? A: MEP-12 / Ecure-33 features built-in adhesion promoters that form direct, high-strength chemical bonds with UPVC, ABS, PMMA, and metallic surfaces. Under standard surface preparation (degreasing and dust removal), no secondary primer is required to achieve excellent peel and shear resistance.
- Q3: Can Shanghai Feimi Materials customize formulations for different potting processes (e.g., Centrifugal vs. Gravity Potting)? A: Yes. Whether you require fast gelation and specific viscosity for centrifugal potting, or extended working life and self-leveling for static gravity/vacuum potting, our engineering team can adjust viscosity, pot life, and cure profiles tailored to your specific processing equipment, fiber type, and mold geometry.
