Polymer Matrix Composites - Typical Properties of Fibre Reinforced Plastics

Standard Properties of FRP’s

The following can be considered as the ‘standard’ properties typically exhibited by an FRP composites component.

        High strength at low weight

        Ability to tailor properties to meet wide-ranging performance specifications

        Moulding to close dimensional tolerances, with their retention under in-service conditions

        Good impact, compression, fatigue and electrical properties

        Ability to markedly reduce part assembly

        Excellent environmental resistance

        Ability to fabricate massive one-piece mouldings

        Proven in-service track record

        Low-to-moderate tooling costs

        Cost-effective manufacturing processes

        Ability to build in, ex-mould, both colour and texture

        Excellent chemical and corrosion resistance

        High ultra-violet radiation stability

        Good-to-excellent fire hardness

        Good structural integrity

        Good thermal insulation

        Ability to attenuate sound

        Respectable abrasion resistance

        Ready bonding to dissimilar materials

        Medium-to-high productivity rates

Properties of FRP’s That Can be Improved

The following additional properties can readily be provided by reinforcement and/or matrix alteration, chemical addition or other formulation, material, or fabrication alteration.

        Excellent chemical and corrosion resistance

        High ultra-violet radiation stability

        Good-to-excellent fire hardness

        Good structural integrity

        Good thermal insulation

        Ability to attenuate sound

        Respectable abrasion resistance

        Ready bonding to dissimilar materials

        Medium-to-high productivity rates

Typical Properties of E-Glass Chopped Fibre Reinforced Polyester Resin

Typical properties of E-glass chopped strand Mat/Unsaturated polyester resin at various glass contents.

Resin: Glass Ratio (by wt)

1.855

2

2.25

2.5

2.75

3

Wt Frac. (%)

35.03

33.33

30.77

28.57

26.67

25.00

Vol Frac Fibre (%)

20.24

19.05

17.30

15.84

14.61

13.56

Laminate thickness (mm)

1.94

2.06

2.27

2.48

2.68

2.89

Tensile Str (N/mm2)

103

97

88

81

75

69

Tensile Mod. (N/mm2)

7224

6800

6175

5655

5216

4641

Typical Properties of E-Glass Woven Roving Reinforced Polyester Resin

Typical properties of E-glass woven roving/unsaturated polyester resin at various glass contents.

Resin: Glass Ratio (by wt)

0.85

1

1.15

1.3

1.5

1.65

Wt Frac. (%)

54.1

50.0

46.5

43.5

40.0

37.7

Vol Frac Fibre (%)

35.6

32.0

29.0

26.6

23.9

22.2

Laminate thickness (mm)

1.10

1.23

1.35

1.48

1.64

1.77

Tensile Str (N/mm2)

227

204

185

169

152

141

Tensile Mod. (N/mm2)

14539

13056

11848

10844

9743

9054

Source: FRP Composites, What are They & Why are They Used?, Composites Processing Association

For more information on this source please visit Composites Processing Association

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