Table 3 Polymer materials and mixed materials of carbon fiber and GF

Density ρ (g/cm³)

1.05

1.0972

2.4-2.76

Relative dielectric coefficient \({\varepsilon }_{r}\)

2.9-3.5

3.2

4-6

Thermal conductivity (W/ (m·K))

0.02-0.046

5.2-6.0

0.7-1.28

Tensile break strength σ_t (MPa)

28.1

37.7

98

Tensile elongation at break e_t (%)

1.5

2.70

3-4

Elastic modulus E_e (GPa)

2.4

3.342

5.7

Flexural break strength σ_f (MPa)

No Break

69

90

Flexural modulus E_f (GPa)

2.22

3.76

5.2

Distortion temperature (°C)

98

101

157

Specific stiffness S_sti (N·m/kg)

2.29

3.05

3.0-3.6

Specific strength S_str (N·m/kg)

26-76

34.36

12.6-19.7