JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 39
Nanofibre veils for highperformance composites
Revolution Fibres has developed Xantu.Layr™, the world's first
commercially available nanofibre interleaving veil. Xantu.Layr™
has been shown to improve the fracture toughness (delamination
resistance), compression after impact strength (damage tolerance)
and fatigue resistance of composite laminates. These nanofibre
veils act as nano-scale reinforcements of the brittle resin matrix in
the interlayer region, resulting in a tougher resin (even when used
with toughened resin systems) that is less prone to micro-cracking
when stressed or impacted.
By
Gareth Beckermann, PhD
nanofiBre aPPlications enGineer
revolution fiBres ltD.
C
omposite materials have experienced
a period of dramatic technological development over the past decade, and
are increasingly becoming the materials of
choice in weight-critical structural components due to their high specific strength
and stiffness. Despite these attributes, composites generally suffer from poor impact
resistance, poor fracture toughness and
poor delamination strength, particularly
when brittle thermosetting resins are used.
Currently, these problems are addressed by
adding thermoplastic toughening particles
to the bulk resin or by inserting tough
polymer films or microfibre interleaving
veils into the interlayers between the plies
of the laminate. However, these toughening
methods are not without their drawbacks.
Toughening particles added to resins
often suffer from poor dispersion, and
- Nanofibre veils for
high-performance
composites ............... p39
- A miracle in trace:
Too good to be true!
But it is truly true ....... p43
Research & development
impact resistance
can form regions of high and low particle
concentrations that can lead to reductions
in composite performance. In addition
to this, toughening particles are also free
to flow with the resin during the curing
process, resulting in further uneven particle
distributions. Toughening particles are also
known to increase resin viscosity, making
them particularly unsuitable for laminates
fabricated using out-of-autoclave processing methods [1], and can increase laminate
thickness, decrease in-plane stiffness and
strength, and potentially lower the glass
transition temperature (Tg) of composite
laminates [2].
Composite toughening techniques
using a polymer film in the interlayer region can result in poor resin flow, porosity
and poor adhesion between the resin and
the film, and this method is generally not
Fig. 1: Scanning electron micrograph of Xantu.
Layr™ nanofibres in relation to a human hair
No102 January - February 2016 /
jec composites magazine 39
http://www.jeccomposites.com/events/jec-americas-2016-atlanta/
Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016
Cover
Edito
Point of view : additive manufacturing
Contents
COMPANY & BUSINESS
DSM Composite Resins to be renamed Aliancys
Aerion and Airbus announce expanded collaboration on supersonic AS2
Agenda of Events
APPLICATIONS
Defence
Sports & leisure
MARKET
Overview
FEATURE AUTOMOTIVE
CFRP
Natural fibres
Prepreg
Thermoplastic
PUR
Phenolic
Process
RESEARCH & DEVELOPMENT
Impact resistance
Trace
TECHNOLOGY & INNOVATIONS
Control
Quality
Automation
Thermoplastic
Nano
Compound
Index
In the world
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Cover
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 2
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Edito
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Point of view : additive manufacturing
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 5
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Contents
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 7
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - DSM Composite Resins to be renamed Aliancys
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Aerion and Airbus announce expanded collaboration on supersonic AS2
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Agenda of Events
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 11
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - pub1
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - pub2
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Defence
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Sports & leisure
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 14
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Overview
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 16
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 17
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - CFRP
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 19
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 20
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 21
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 22
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Natural fibres
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 24
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 25
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 26
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Prepreg
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Thermoplastic
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 29
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 30
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - PUR
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Phenolic
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 33
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 34
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Impact resistance
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Process
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 37
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 38
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 39
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 40
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 41
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 42
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Trace
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 44
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 45
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Control
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 47
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 48
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Quality
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 50
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 51
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Automation
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Thermoplastic
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 54
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Nano
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Compound
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - Index
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - In the world
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 59
JEC COMPOSITES MAGAZINE - Issue #102 - January/February 2016 - 60
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