SUMIKAEXCEL 2603MP

Grade Information

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

The grade names are related to the molecular weight, and SUMIKAEXCEL 2603MS has the lowest molecular weight among the MP series with hydroxyl end groups. There is also a correlation between the molecular weight and the viscosity of the solution.

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)
1.37
Water absorption rate (Karl Fischer) [%] (Sumitomo Chemical Method)
1.20
Particle size (D50) [μm] (Sumitomo Chemical Method)
40
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)
-