Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Da Hutong ESC TFL-205H Toughener

DaHutongESC’sTFL-205HToughenerisahigh-performanceepoxyresintougheningagentdesignedforaerospaceandadvancedcomposites.Itenhancesimpactresistance,fracturetoughness,andthermalstabilitywithoutcompromisingcuringefficiencyoradhesion.Suitableforcarbonfiberreinforcedpolymers(TCFRP)andstructuraladhesives,itoffersexcellentcompatibilitywithDGEBAepoxiesandimprovesdelaminationresistance.
  • da hutong esc tfl 205h toughener_17b43e2f
  • da hutong esc tfl 205h toughener_17b43e2f

Features Of Da Hutong ESC TFL-205H Toughener

  1. High-performance epoxy resin modifier designed to significantly improve impact resistance and fracture toughness without compromising thermal stability.

  2. Low-viscosity liquid formulation ensures excellent compatibility and homogeneous dispersion in standard epoxy systems.

  3. Enables room-temperature or elevated-temperature curing with minimal effect on gel time and pot life.

  4. Halogen-free and REACH-compliant, supporting sustainable composite and adhesive manufacturing.

  5. Enhances interlaminar shear strength (ILSS) in fiber-reinforced composites, particularly carbon and glass fiber laminates.

Typical Applications Of Da Hutong ESC TFL-205H Toughener

  1. Aerospace structural adhesives and prepreg matrices for primary and secondary components.

  2. Wind turbine blade resins requiring fatigue-resistant, crack-arresting performance.

  3. High-end automotive under-hood composites exposed to thermal cycling and mechanical shock.

  4. Electronics encapsulants and potting compounds demanding dielectric integrity and mechanical durability.

  5. Railway interior panels and structural bonding systems meeting stringent fire-smoke-toxicity (FST) requirements.

Specifications Of Da Hutong ESC TFL-205H Toughener

Chemical TypeFunctionalized carboxyl-terminated liquid rubber (CTBN-analog)
Product FormClear to pale yellow low-viscosity liquid
AppearanceHomogeneous, free from sediment or haze
Density (25°C)1.02–1.05 g/cm³
Viscosity (25°C)800–1,200 mPa·s
Refractive Index (25°C)1.47–1.49
Storage Stability≥12 months at ≤25°C in sealed original container
Primary ApplicationsEpoxy toughening for structural composites, adhesives, and coatings


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