Thermoset reinforcements
Principle
Packing function made in dynamic conditions for rotating pumps or turning machines, and in static conditions for valves or taps, is ensured particularly by a compressed braid in a stuffing box. Joint packing is a deformable material which must prevent or control fluid passing between surfaces in relative movement, one towards the other.
Technical aspects
End use
To make these braids, Schappe offers a wide range of dry or coated yarns, depending on the conditions of utilization. Generally, the choice of components will result from the following requirements :
- Mechanical resistance
- Temperature resistance
- Thermal conductivity
- Lowest friction coefficient
- Chemical inertia
- Lowest dilation coefficient
Raw materials used
- Para-aramid
- Para-aramid / viscose
- Preox
- Carbone
- Carbone / Inconel
Properties
- High tenacity and specific modulus (light weight)
- Good bonding with matrix
- Good fatigue resistance in alternating flexion
- Good dimensional stability
- Good resistance to high temperature
Schappe Techniques offers yarns that can lead to extremely light fabrics (down to 40 g/m²) with extremely high mechanical results and dimensional stability.
Advantages
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