Ecflex-10 / Ecflex-07 Flexible Epoxy Curing Agents for Wire Harness & Connector Potting
Product Summary
Engineered specifically for automotive wire harnesses, optical camera sensors, industrial instrumentation, and aviation connectors, Ecflex-10 and Ecflex-07 are high-performance modified amine hardeners designed for demanding encapsulation. Delivering ultimate airtight integrity, IP67/IP68 moisture ingress protection, robust chemical resistance, and exceptional thermal shock endurance, the Ecflex series effectively guards against joint stress fatigue, insulation failure, and environmental degradation. Custom tailoring for viscosity, pot life, and cure cycles is available. Developed in-house by Feimi Materials, the Ecflex-10 / Ecflex-07 flexible epoxy curing agent series addresses the critical encapsulation and reinforcement challenges in dynamic, harsh-duty application environments. Under severe operating conditions, rigid conventional epoxy systems frequently suffer from internal stress buildup caused by frequent wire flexing, tensile load, or rapid thermal cycling—resulting in micro-cracking, substrate delamination, and moisture ingress.
By incorporating long-chain flexible segments into a dense, modified crosslinking matrix, Ecflex curing agents impart high impact toughness and stress-damping flexibility to the cured epoxy system. Beyond superior airtight and watertight sealing, the cured matrix delivers high dielectric strength, anti-aging stability, and resistance to aggressive industrial fluids—providing long-term mechanical reinforcement and chemical shielding for sensitive harness assemblies. Furthermore, with their ultra-low initial viscosity and high wetting capability, Ecflex-10 and Ecflex-07 penetrate narrow harness roots and complex connector geometries effortlessly, eliminating micro-voids and air entrapment.
Product Advantages
- Exceptional Airtight & IP67/IP68 Watertight Sealing.Forms a highly dense and homogeneous crosslinked network that serves as an impermeable barrier against moisture and atmospheric contaminants. Eliminates capillary water migration at the wire root, preventing electrode corrosion and insulation degradation.
- Superior Flexibility & Thermal Shock Resistance (-40°C to +120°C)。Incorporates dynamic stress-release mechanisms to effortlessly withstand repetitive thermal shocks and thermal expansion mismatches. Will not embrittle, harden, or crack over prolonged exposure to extreme temperature shifts.
- Robust Adhesion & Mechanical Reinforcement. Exhibits exceptional wetting and bonding strength to difficult substrates including PVC, TPE, silicone rubber, and metallic terminal pins. Effectively absorbs tensile pulling, bending fatigue, and high-frequency vibration during vehicle operation.
- Outstanding Electrical Insulation & Chemical Durability. Delivers superior high-frequency dielectric insulation. Excellent resistance to salt spray, oil/fuel contamination, mold growth, and common chemical solvents, significantly extending the service life of sensitive electronic harness modules.
Basic Physical Properties
| Products / Parameter | Ecflex-01 | Ecflex-02 | Ecflex-03 | Ecflex-05 | Ecflex-07 | Ecflex-10 |
|---|---|---|---|---|---|---|
| 外观 Appearance | 琥珀色液体 Amber liquid | 琥珀色液体 Amber liquid | 琥珀色液体 Amber liquid | 琥珀色液体 Amber liquid | 琥珀色液体 Amber liquid | 琥珀色液体 Amber liquid |
| 色泽 Color (Gardner) | <=12 | <=12 | <=12 | <=12 | <=12 | <=12 |
| 粘度 viscosity (25℃,mPa.s) | 17000 | 25000 | 9000 | 10700 | 4500 | 1900 |
| 活泼氢当量 AHEW (g/mol) | 390 | 390 | 185 | 185 | 251 | 170 |
| 推荐使用量(NPEL-128:Ecflex) Recommended Use Level | 100:200 | 100:200 | 100:100 | 100:100 | 100:130 | 100:90 |
| Gel time (25℃ min) | 35 | 50 | 40 | 15 | 70 | 55 |
Mechanical Properties
| Products / Product | 拉伸强度 MPa Tensile strength | 拉伸模量 MPa Tensile Modulus | 拉伸延伸率 % Elongation | 拉伸韧性 J/cm²[1] Tensile toughness |
|---|---|---|---|---|
| 400#聚酰胺 Versamid 140 | 44 | 2800 | 5.1 | 13 |
| Ecflex-01 | 10 | 10 | 280 | 36 |
| Ecflex-02 | 10.3 | 25 | 225 | 48 |
| Ecflex-03 | 44 | 1957 | 25 | 187 |
| Ecflex-05 | 37 | 1932 | 15 | 191 |
| Ecflex-07 | 18 | 392 | 120 | 190 |
| Ecflex-10 | 40 | 1800 | 28 | 183 |
** [1]**：Integral area of the stress-strain curve（With liquid bisphenol A epoxy）。
3. Adhesion Performance
| / Test Item | Ecflex-01 | Ecflex-02 | Ecflex-03 | Ecflex-05 | Ecflex-07 | Ecflex-10 | 聚酰胺 Versamid 140 |
|---|---|---|---|---|---|---|---|
| 搭接剪切 LSS（Fe/Fe）MPa | 11 | 17 | 27 | 24 | 18 | 23.6 | 18 |
| 搭接剪切 LSS（Al/Al）MPa | 8.1 | 12.9 | 18 | 17 | 8.93 | 18.9 | 12.7 |
| 老化后搭接剪切 LSS（Al/Al）MPa [2] | 15.6 | 26 | 8.77 | 19.6 | failed | ||
| 搭接剪切 LSS（ABS/ABS）MPa | 4.5 | 4.6 | 4.3 | 4.5 | 4.3 | 4.2 | |
| 搭接剪切 LSS（ABS/ABS不打磨 no sanded）MPa | 4.4 | 4.6 | 4.5 | 4.5 | 4.4 | 4.5 | |
| 搭接剪切 LSS（PC/PC）MPa | 6.9 | 6.9 | 7 | 6.9 | 6.3 | 6.3 | |
| 搭接剪切 LSS（PC/PC不打磨 no sanded）MPa | 6.6 | 6.6 | 6.5 | 6.4 | 6.1 | 6.1 |
注 [2]：85℃, 85% aging for 1000h。
Applications
- Automotive Camera Harnesses.Ideal for sealing, strain relief, and moisture protection at the lead-out wire terminals of front-view, surround-view, and rear-view automotive cameras.
- Automotive & EV Wire Assemblies.Designed for waterproof sealing and anti-corrosion reinforcement on chassis sensor wiring, battery management system (BMS) connections, and lighting harnesses.
- Aviation Plugs & Heavy-Duty Industrial Connectors.Suitable for backshell potting of circular military/aviation plugs and rectangular heavy-duty connectors, significantly boosting cable pull-out strength.
- Instrumentation & Industrial Sensors.Provides tamper-proof, moisture-sealed encapsulation for smart utility meters (water/gas) and industrial sensor wiring terminals.
Handling & Safety:
- Please refer to the Safety Data Sheet (SDS / MSDS) for comprehensive handling instructions.
Storage Condition
- Store in tightly sealed original containers in a cool, dark, and dry environment. Protect from air exposure and humidity.
- Shelf Life: At least 12 months from the date of manufacture under standard sealed storage conditions.
FAQ
- Q1: What are the key performance differences between Ecflex-10 and Ecflex-07? A: Ecflex-10 and Ecflex-07 differ primarily in post-cure flexibility (Shore hardness), elongation at break, and mixed viscosity. Ecflex-10 offers higher flexibility and exceptional thermal shock endurance, making it the ideal choice for compact automotive camera modules and connectors subjected to frequent wire movement. Ecflex-07 provides higher mechanical tensile strength and balanced modulus, making it better suited for larger cable assemblies requiring higher compressive and shear strength.
- Q2: How well does the Ecflex series adhere to common wire jacket materials like PVC or TPE? A: Thanks to specialized molecular chain modification, Ecflex curing agents exhibit optimal polar group density, ensuring strong physical anchoring and chemical wetting onto standard PVC, TPE, and engineering plastics (PC/ABS).
- Q3: Can Feimi Materials customize the curing speed to fit our automated dispensing process? A: Yes, absolutely. Whether your production line uses automated meter-mix dispensing, vacuum potting, or manual application, Feimi Materials can tailor the reactivity (pot life/gel time) and cure temperature profiles (e.g., fast heat curing at 80°C vs. room-temperature curing) to match your specific manufacturing cycle.
