SRALON® PPTA Pulp
100% para aramid pulp for friction and sealing application.
SRALON® para-aramid pulp is widely used in friction and sealing field, significantly increasing its performance and service life.
SRALON® Para-aramid pulp is made from SRALON® filament yarn whose composition is poly (para-phenylene terephthalamide). After a series process of cutting, grinding and suspending in water, the fiber is fibrillated into pulp. The pulp not only inherits the high-strength, high-modulus, high-temperature resistance, abrasion resistance and excellent chemical stability from para-aramid fiber, but also has high dispersibility, specific surface area and grip force to provide reinforcement and viscosity control under shear stress.
SRALON® PPTA Pulp Technical Specifications
| Testing item | Unit | VP220 | VP230 | VP270 |
| Canadian FreeSwell Index (C.S.F) | ml | 220~350 | 320~450 | 300~600 |
| Schopper-Riegler freeness | °SR | 36.0~48.3 | 28.5~38.0 | 20.0~40.3 |
| Specific Surface Area (SSA) | m²/g | 9~14 | 7~12 | 5~14 |
| Fiber Length | mm | 0.8~1.4 | 0.5~1.2 | 0.5~1.4 |
| Moisture Content | % | 5~8 | 5~8 | 5~8 |
| Thermal Decomposition Temperature(T.G.A) | °C | 550~560 | 550~560 | 550~560 |
