Pulp

Pulp
Pulp made from para-aramid fibers is a high-performance material known for its exceptional properties. With a density of 1.41 g/cm³ to 1.42 g/cm³, slightly lower than that of PPTA filaments, the pulp features a plush surface rich in microfibrils and a high degree of fibrillation. This results in a large specific surface area ranging from 5 m²/g to 15 m²/g, significantly enhancing its gripping ability in composite materials.
The average fiber length ranges from 0.5 mm to 2 mm, with a distribution in both length and diameter. The amino content on the pulp surface is over ten times that of filaments, providing excellent affinity with amide composite resins. It forms hydrogen bonds at the interface with the matrix, greatly improving the reinforcement effect in composites. Additionally, the pulp exhibits outstanding toughness and maintains its length-to-diameter ratio even under intense mixing and processing, outperforming carbon fibers and other fibers in this aspect.
Type | C.S.F | S.S.A | Moisture content | Average fiber length KAJAANI | T.G.A (in N2) | Packaging | |
ml | m2 /g | % | mm | ℃ | kg/bag | kg/plt | |
PT-H050 | 250-350 | 7.0-10.0 | 3.0-7.0 | 0.60-0.80 | 540-555 | 5.0 | 130 |
PT-H070 | 320-420 | 7.0-10.0 | 3.0-7.0 | 0.70-1.00 | 540-555 | 5.0 | 130 |
PT-H100 | 350-450 | 6.5-9.5 | 3.0-7.0 | 0.55-0.95 | 540-555 | 5.0 | 130 |
PT-H300 | 350-400 | 5.5-9.0 | 3.0-7.0 | 0.40-1.10 | 540-555 | 5.0 | 130 |
PT-H700 | 450-650 | 5.0-9.0 | 3.0-7.0 | 0.40-1.10 | 540-555 | 5.0 | 130 |
Test method | TAPPI-227 | ISO 9277 | TAPPI-412 | TAPPI-271 | – | – | – |
- C.S.F ; Canadian Standard Freeness
- S.S.A ; Specific Surface Area (Micrometrics ASAP 2020 Physisorption Analyzer)
- Average fiber length ; Metso automation KAJAANI FS-300TM Fiber Length-weighted average length
- T.G.A ; Thermo Gravimetric Analysis
- TAPPI ; Technical Association of the Pulp and Paper Industry