JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 18

sustainability

Tab. 2: Mechanical properties of various biocomposites

Tab. 3: Acoustic properties of some traditional and natural fibre materials

Fibre diameter
(µm)

Bulk density
(g/cm3)

Cotton

13.5

0.04

0.62

0.50

Flax

21.8

0.08

0.55

0.40

24.4

0.10

0.55

0.40

37.1

0.10

0.35

0.20

Biocomposite
Property
Tensile strength
(MPa)
Tensile modulus
(GPa)
Flexural strength
(MPa)
Flexural modulus (GPa)
Fibre volume
fraction (%)
Density (g/cm3)

Material

Plain flax fabric (0/90) UD flax fabric (0°)
/ BUP*
/ BUP*

Thickness
(mm)

Noise reduction Absorption coefcoefficient1
ficient2 at 500 Hz

87

112

8.6

14.0

138

162

Jute

81.2

0.07

0.35

0.20

8.9

11.5

Sisal

213.0

0.04

0.16

0.10

38

45

Glass wool

---

0.03

0.56

0.40

---

0.07

0.65

0.70

1.23

1.46

---

0.07

0.17

0.10

Tab. 4: Thermal properties of some
natural and traditional insulating
materials

Material

Thermal conductivity (W/mK)

Hemp

0.040

Kenaf

0.044

Coco fibre

0.043

Sheep wool

0.044

Wood wool

0.065

Cork

0.039

Cellulose

0.037

Flax

0.040

Glass wool

0.040

Rock wool

0.045

Expanded
polystryrene

0.031

conductivity values of natural fibres are in the range of
traditional materials used in
the transport and building
industries such as glass or
rock wool. Table 4 shows
the thermal properties of
both natural fibres and
traditional materials .

Vibrational damping
Vibrational damping
mechanisms in natural fibre
composites differ entirely
from those in conventional
materials and energy dissipation depends on factors
like the visco-elastic nature

Ramie
Wool

Mineral wool

50

40

Polystyrene

of the matrix and/or fibre,
the interphase, damage and
visco-plastic characteristics.
Fig. 5 illustrates the vibrational damping behaviour
of several natural fibres
and conventional synthetic
fibres as a function of fibre
orientation.
As can be seen from Fig.5,
natural fibres such as flax
exhibit a higher damping
behaviour than traditional
reinforcements such as glass
or carbon fibres.

Fig. 5: Vibrational damping behaviour of some natural fibres compared with
conventional reinforcements (Source: Lineo n.v11)

Applications
Biocomposites obtained
from both petroleum- and
bio-based resins reinforced
with natural fibres have
gained interest over the
past years. Regarding new
applications of biocomposites, many companies
and research institutes
are currently conducting
extensive work on natural
fibre fabrics and polymers
in order to develop parts for
different areas of the transport industry including
automotive, rail and aircraft
applications. Some products developed from these

Fig. 6: Examples of biocomposite applications in the transport industry: fireproof
interior panels made from flax fabrics and thermosetting resins developed
by AIMPLAS (a); biocomposite seat panelling element for suburban trains (b);
fireproof sidewall panel made from natural fibres and thermoplastic polymers
developed by AIMPLAS (c); tractor floor panel from flax and polylactic acid developed in the NATEX project (d); interior door panels from short natural fibres and
thermoplastic polymers (e); under floor protection trim of the Mercedes Class A
based on banana fibre and thermoplastic materials (f)

18 jec composites magazine / No92 October - November 2014



JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014

Cover
Edito
Point of view: oil & gas
Contents
COMPANY & BUSINESS In Brief
Recycling
Biocomposites
Spin-off
Agenda of Events
APPLICATIONS
Sustainability
Defense
Automotive
MARKET
Biocomposites
Inside the factory
SPECIAL JEC AMERICAS - FALL EDITION
Gain insight into the JEC 2014 I.C.S. Americas Program
JEC Americas Innovation Awards Program
Maintenance - Certified composite repair system for pipelines
Carbon fabrics - Successful first flight test for the VX-1 KittyHawk C-PlyTM aircraft model
Design - Composite aerostructure development in high-performance enterprises
RESEARCH & DEVELOPMENT
Reinforcement
Process
TECHNOLOGY & INNOVATIONS
NDT
Tooling
Infusion
Index
In the world
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Cover
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 2
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Edito
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Point of view: oil & gas
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 5
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Contents
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 7
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - COMPANY & BUSINESS In Brief
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Biocomposites
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Recycling
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Spin-off
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 12
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 13
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Agenda of Events
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Ad1
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Ad2
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 15
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Sustainability
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 17
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 18
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 19
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Defense
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 21
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Automotive
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Biocomposites
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 24
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 25
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 26
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 27
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Inside the factory
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 29
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 30
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - SPECIAL JEC AMERICAS - FALL EDITION
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Gain insight into the JEC 2014 I.C.S. Americas Program
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 33
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 34
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 35
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 36
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - JEC Americas Innovation Awards Program
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 38
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 39
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 40
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 41
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Maintenance - Certified composite repair system for pipelines
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Carbon fabrics - Successful first flight test for the VX-1 KittyHawk C-PlyTM aircraft model
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Design - Composite aerostructure development in high-performance enterprises
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 45
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 46
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Reinforcement
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 48
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 49
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 50
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Process
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 52
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 53
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 54
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - NDT
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 56
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 57
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Tooling
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 59
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 60
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 61
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Infusion
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 63
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 64
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - Index
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - In the world
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 67
JEC COMPOSITES MAGAZINE - Issue #92 - October/November 2014 - 68
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