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High reactivity with amine and anhydride curing agents for rapid gelation and short cycle times.
Excellent adhesion to metals, composites, and cured epoxy substrates without primer.
Low viscosity (12,000–15,000 cP at 25°C) enabling easy processing, impregnation, and air release.
Superior thermal stability with glass transition temperature (Tg) up to 180°C after full cure.
Low chloride content (< 500 ppm), ensuring high electrical insulation performance and corrosion resistance.
Electrical encapsulation of high-voltage power modules and IGBTs.
Structural adhesive formulation for aerospace composite bonding.
Matrix resin for filament-wound pressure vessels and carbon fiber tanks.
Underfill and glob-top material for semiconductor packaging.
High-performance coating systems for offshore and chemical plant infrastructure.
| Chemical Type | Diglycidyl ether of bisphenol-F (DGEBF) |
| Product Form | Liquid resin |
| Appearance | Pale yellow to amber transparent liquid |
| Epoxy Equivalent Weight (EEW) | 175–185 g/eq |
| Viscosity (25°C) | 12,000–15,000 cP |
| Chloride Content | < 500 ppm |
| Softening Point | Not applicable (liquid at room temperature) |
| Storage Stability | 12 months at ≤ 25°C in sealed containers |
Q1: What is the primary function of KUKDO YD-017 4 in epoxy formulations?
A: KUKDO YD-017 4 functions as a reactive diluent and viscosity modifier, helping to reduce overall formulation viscosity without significantly compromising crosslink density or thermal stability after curing.
Q2: Is KUKDO YD-017 4 compatible with common amine and anhydride hardeners?
A: Yes, it demonstrates good compatibility with standard aliphatic and aromatic amines, as well as cyclic anhydrides, and participates effectively in the epoxy curing reaction due to its glycidyl functionality.
Q3: How does KUKDO YD-017 4 affect the mechanical properties of cured epoxy systems?
A: When used at appropriate levels, it helps maintain balanced mechanical performance—supporting good tensile strength and modulus while improving flexibility and impact resistance compared to unmodified high-molecular-weight resins.
Q4: Can KUKDO YD-017 4 be used in coatings requiring low VOC content?
A: Yes—it is a low-volatility, non-reactive-diluent-alternative that contributes to reduced formulation VOC without sacrificing reactivity, making it suitable for industrial coating systems targeting regulatory and sustainability goals.
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