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

Kukdo Chemical SMPN-638 Epoxy Resin

SMPN-638 is a premium semi-solid phenolic novolac epoxy resin in Kukdo’s SMPN series, designed for high-performance materials requiring high-temperature and corrosion resistance. Synthesized from epichlorohydrin and novolac, it features multi-epoxy groups, combining excellent heat resistance and reactivity, forming highly crosslinked dense structures.

Features Of Kukdo Chemical SMPN-638 Epoxy Resin

  • Excellent high-temperature resistance - Novolac backbone ensures high thermal stability, slow thermal oxidative degradation at elevated temperatures

  • Strong chemical protection - Resists strong acids, alkalis, organic solvents and salt spray, suitable for severe corrosive environments

  • High crosslinking density - Multifunctional structure forms dense cured products with excellent impermeability and wear resistance

  • Superior adhesion strength - Firm bonding to metals, fibers, concrete and other substrates with strong interface adhesion

  • Semi-solid processability - Suitable for mixing, coating, pouring and other processes, easy to operate with stable molding

Typical Applications Of Kukdo Chemical SMPN-638 Epoxy Resin

  • High-temperature protective coatings - Long-term protective coatings for chemical reactors, high-temperature equipment and chimneys

  • High-performance composites - Matrix resin for glass/carbon fiber reinforced composites, suitable for wind power and aerospace lightweight structures

  • Corrosion-resistant adhesives - Structural bonding and sealing for chemical storage tanks and ship decks in severe corrosive environments

  • Electrical insulation materials - Insulation encapsulation and impregnation for electronic components and transformers in high-temperature conditions

  • High-end laminates - Resin substrate for high-performance insulating laminates and copper-clad boards, ensuring electrical and mechanical properties

Specifications Of Kukdo Chemical SMPN-638 Epoxy Resin

AppearanceLight Yellow to Yellow Transparent Semi-Solid
TypePhenolic Novolac Epoxy Resin
Epoxy Equivalent (g/eq)174-180
Solution Viscosity (25℃, Gardner)H-K
Solid Content (%)100
Density (20℃, g/cm³)1.18
Glass Transition Temperature (Tg, ℃)≥135
Color (Gardner)≤1.0
Hydrolyzable Chlorine (ppm)≤200
Long-Term Service Temperature (℃)≤170


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