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Kaneka Aerospace LLC (Benicia, Calif., U.S.), specialized in high-performance composite materials for the aerospace and industrial markets, is introducing a newly developed two-part epoxy-amine resin for composites repair. 

According to the company, when damage to a composite occurs, its SR6400 resin doesn’t just repair — it returns performance to its original state. This product was identified as the top-performing candidate for composite delamination injection repair in a recent .

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The two-part repair epoxy offers on-site repair — geling at room temperature and curing at lower temperatures. It features ultra-low viscosity for deep access into damaged zones. It is also reported to have lowest post-injection porosity for cleaner, stronger repairs, maintains strength in hot-wet conditions to ensure long-term reliability and delivers a high T_g for more resistance against heat. 

When studying SR6400’s rhealogical properties, Kaneka Aerospace found that its low viscosity enabled greater penetration into damaged areas, reducing average areal porosity and effectively filling delaminated areas with minimal void formation. Moreover, the epoxy resin increased the laminate fracture toughness by a minimum of 143% compared to the baseline average. Mode II fracture toughness test results below demonstrate that SR6400 is capable of restoring fracture toughness and by proxy, strength, to a delaminated laminate.

This product could be used for carbon and glass fiber composites in any industry, such as aerospace, defense, wind energy, marine, industrial and transportation composites repair environments where reliability and durability are critical.

Along with its mechanical performance, SR6400 offers clear shelf life guidance: Part A remains stable for 12 months at ambient temperature or up to 24 months when refrigerated, while Part B has a consistent 24-month shelf life under both conditions.