Constituent Materials and Properties - Strengthening Design of Reinforced Concrete with FRP - page 47

TABLE 3.4
Properties of Thermoplastic Polymers at Room Temperature

Aromatic Polyimides

PPS:
Polyphenylene
Sulide

PEEK:
Polyether
Ether Ketone

Nylon:
Nylon 6,
6

Polyetherimide
(Ultem)

Polyamide-
Imide (Torlon)

PS:
Polysulfone

PP:
Polypropylene

PC:
Polycarbonate Property

Density (kg/m 3 ) 1270 1400 1340 1320 1240 900 1140 1060-1200

Tensile modulus
(GPa)

3 5 3.3 — 2.5 1-1.4 1.4-2.8 2.2-2.4

Tensile strength
(MPa)

105 95-185 70-75 92-100 70-75 25-38 60-75 45-70

Compressive
strength (MPa)

140 276 110 — — — 34 86

Elongation (%) 60 12-18 3 150 50-100 300 40-80 50-100

Coeff. of thermal
expansion
(×10 -6 /°C)

62 36 54-100 — 56-100 110 90 70

Thermal
conductivity
(W/m/°C)

— — — — — 0.2 0.2 0.2

Glass transition
temperature (°C)

217 243-274 85 143 190 −20 to −5 50-60 133

Water absorption
(%) [24h @
20°C]

0.25 0.3 0.2 0.1 0.2 0.03 1.3 0.1

Source: Courtesy of Hyer (1998).