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Mechanical Properties of Pultruded Profiles A broad spectrum of mechanical properties is provided by the selection of reinforcement types, style, form & proportion in combination with different matrix. The directionality of strength in a pultruded composite can be greatly influenced by substituting longitudinal reinforcement by random mat or directional fabrics. The absolute value of the specific property desired would depend on the fibre type chosen: glass, carbon, aramid, organic or natural fibres. Table 1 indicates the effect on select mechanical properties in the axial direction for various continuous fibres.
Table 1 : Effect of Fibre Type on Select Mechanical Properties of Pultruded Profiles
|
Fibre type
|
Specific Gravity
|
Tensile
Strength
(M Pa)
|
Tensile
Strength
(G Pa)
|
Compressive
Strength
(M Pa)
|
Thermal
Conductivity
(W/m ok)
|
|
Glass(E-glass unidirectional rovings)
|
2.0
|
690
|
40
|
410
|
0.30
|
|
Carbon(AS graphite fibres)
|
1.65
|
1000-1500
|
100-140
|
620-970
|
0.85 - 1.40
|
|
Aramid(Kevlar-49 fibres)
|
1.28
|
1400
|
80
|
280
|
0.15
|
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