SUMIKAEXCEL 2603P

Grade Information

SUMIKAEXCEL 2603P is a powder grade of polyethersulfone (PESU) modified with hydroxyl end groups. It is primarily used to dissolve or disperse in thermosetting resins such as epoxy resins.

Grade names and molecular weights are related, and SUMIKAEXCEL 2603P has the lowest molecular weight among grades with hydroxyl end groups. There is also a correlation between molecular weight and solution viscosity.

Product
SUMIKAEXCEL
Product Series
2603
Resin
PESU Powder
Molding Method
Coating, casting, solution processing
Fillers/Reinforcements
Non-reinforced
Features
Creep resistance, high dimensional stability, hydrolysis resistance, chemical resistance, good adhesion, flame retardancy
Applications
Carbon fiber composite materials, heat-resistant paints, coatings, adhesives
ISO marking code (ISO 11469)
>PESU<
Total filling amount [%]
-
Specific Gravity (ASTM D792)
0.47
Water absorption rate (Karl Fischer) [%] (Sumitomo Chemical Method)
0.8
Particle size (D50) [μm] (Sumitomo Chemical Method)
500 - 800
Reduced Viscosity (RV) (Sumitomo Chemical Method)
0.27
Glass transition temperature [℃] (ISO 11357-1,-2)
220
Median particle size [μm] (Sumitomo Chemical Method)
-
Heat loss [%] (Sumitomo Chemical Method)
-