Moisture absorption and heat generation

Mechanism

When fibers absorb moisture contained in the air, they generate heat called “heat of adsorption”.
Our polyacrylate fiber has high moisture absorption ability due to many hydrophilic groups thus leading efficient generation of “heat of adsorption”.

When fibers are placed in a constant temperature environment and the humidity is increased,
the temperature rise of our polyacrylate fiber is superior to that of other fibers.

Test method: ISO 18782・JIS L 1952
Continuously supply air with low humidity (20°C x about 40% RH) to one side (measurement side) of the test piece to keep the temperature of the measurement side constant, and make the temperature at this time the initial temperature. The supply air is switched to high humidity (20°C x about 90% RH), and then the temperature change of the measurement surface is measured over time.

note:
Data in this document were measured for 100% fiber, its fabric, or specific mixed materials, and are not guaranteed values. In addition, the performances vary depending on the mixing ratio and specifications. Therefore, we ask that you test the performances of your products for its datum.