JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 34

FEATURE preimpregnated textile

Fig. 2: CompPair prepregs based on glass and carbon twill fabrics have been
labelled as an Efficient Solution by the Solar Impulse Foundation since April 2020

products that use standard composites manufacturing processes for intuitive processing.
The company will continuously innovate to
propose all types of reinforcements, adapting
to various industry needs. In addition to
process compatibility, CompPair products
make it possible to build composite structures
matching the current strength and stiffness
requirements, together with above-average
toughness values.
Currently used in sports and marine applications, the company's semi-products have
demonstrated high compatibility with other
structures and during manufacturing. The
curing process for this first product family
is 140°C for 3 hours; a post-cure at higher
temperature, up to 180°C, can be performed
to increase mechanical properties if required.
Processing can be performed in or out-of-autoclave with traditional tooling. In addition,
the products are compatible with various
foams and honeycombs to produce sandwich structures. Highly important for many
applications, some traditional coatings were
also identified as compatible with the healing
process proposed by CompPair.
For its market entry, CompPair is creating a
win-win dynamics between sports equipment
manufacturers or boat builders and end-users.
Its products can drastically reduce manufacturing defects and repair maintenance costs while
keeping high additional value for customers
in terms of lifetime performances. Following
an expert assessment that concluded that the
products offer ecological benefits together
with a viable business model, these innovative
products received the Solar Impulse Efficient
Solution Label.
Competitive properties and
profitable maintenance process
CompPair preimpregnated textiles are de-

34

signed to retain standard specifications and
be competitive with benchmark composite
structures. These semi-products, used for
manufacturing composite structures, provide
healing properties during their lifetime as a
new intrinsic feature with high added value.
Indeed, if the composite structure is damaged,
resulting in micro-cracks and delamination,
the novel chemistry allows semi-autonomous
healing simply using a heat gun, thus avoiding
catastrophic failure. More specifically, micro-cracks and delamination are healed using
a heat gun at 80-150°C for 1-10 minutes. This
innovative repair process is ultra-fast, thus
drastically reducing maintenance costs and
the time spent on repairs. It can be used as a
preventive regeneration process to be regularly applied for products that require large
maintenance operations, but also to repair
common delamination damage that would
require the traditional patch repair process.
The company not only brings semi-products
to the market, it also provides material
characterisation data for the composite materials produced with their innovative solution.
Specifically, a damage catalogue is created
following tests conducted on CompPair
composites. This aims to point out the damage magnitude that can be healed using this
technology and helps industry players easily
identify how the company's solutions can
help them to overcome current limitations.
A typical example of damage healing for glass
fibre composites is shown in Figure 3.
Damage healing on carbon fibre composites
follows exactly the same heating procedure,
but the damage assessment has to be performed through conventional non-destructive
techniques.
During damage healing of CompPair composites, the part's initial properties are fully

jec composites magazine / N°136 September - October 2020

regenerated, allowing end-users to re-gain full
performance and OEMs to maintain operations. In addition, the part remains structural
during healing, a major advantage to perform
healing in any conditions. This innovative
and viable solution was industrialized and
validated in early 2020. A series of validation
tests were conducted to prove the ability of
these materials to retain their structural and
lightweight properties, even after healing. On
request, CompPair provides a datasheet that
contains standard mechanical tests for bending, tensile and toughness properties as per
the ASTM D790, ASTM D3039 and ASTM
D5528 standards. While tensile and bending
properties match the current benchmark values for conventional applications, toughness
properties, a measure of the crack resistance,
showed a 30% increase on average.
Overall, these products have demonstrated
their potential in various applications within
the composites industry. CompPair is starting
their implementation specifically in the
sports and marine industries, where lifetime
repair costs due to delamination can almost
be reduced by 100% due to the highly efficient
repair process. Such an efficient process translates into drastically reduced manufacturing
repair costs, up to 80% for certain applications.
The company plans to extend its product
portfolio to address other markets, especially
the wind power industry. Indeed, wind
turbines suffer from high stresses causing early
delamination and fatigue damage. Blades are
constantly inspected to be repaired if needed
and avoid a catastrophic failure of the structure. With CompPair materials, both onshore
and offshore wind turbines could benefit from
high composite repair cost savings, with lower
downtimes for repair operations, thus reducing the levelized cost of energy (LCOE). The
improved end-of-life management would be a
way to reduce blade waste at their end-of-life.
A healable solution
for durable applications
Composite materials are contingent upon
cyclical constraints across all their industrial
applications. They are subjected to fatigue,
which creates micro-cracks and delamination.
This type of damage event can be found
specifically in high-performance activities.
CompPair extends the lifetime of composite



JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020

Cover
Edito
“We can change the way we envision global shipping overall”
Contents
NEWS
In brief
Agenda
BUSINESS
Reinforcement - Natural-fibre composites: an overview
Startup - When 3D printing meets sustainability
China - Xinzhou bets on the bamboo-based composites industry
MANUFACTURING
Wind - lnnovation in wind power through multi-process-capable systems
Automation - Higher production capacity thanks to automated manufacturing
FEATURE Sustainability - The path has been plotted
Recycling ecosystem - Composites recycling: in search of the circular economy
Mobility - A new generation of recycled composite materials for sustainable mobility
Preimpregnated textile - Healable composites to improve circularity
Process - New trends in composites and plastics recycling
Raw materials - Innovative composites made from up to 92% reclaimed materials
Construction - Biocomposites and automation: a sustainable future for the building industry
Ressources - Waste-free composite wheel production
Wind energy - From bottle to blade
Durable composites - Upcycling plastic bottles into value-added composite applications
Matrix - Novel thermoset composites for more competitive and sustainable industries
SOLUTIONS
Aerospace - Slinging rockets into space
Aerospace - Composites push back the final frontier
Railway - Composite overhead line catenary system for light rail
TECHNOLOGY
Repair - Developing an eddy current-based sensor system for quality assurance of carbon fibres
Inside the lab - Advanced Composite Materials Facility University of Southampton
Resin - Development of new type of plastics: Polypropylene 2.0
Index
Advertisers
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Cover
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 2
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Edito
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - “We can change the way we envision global shipping overall”
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 5
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Contents
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 7
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - In brief
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 9
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 10
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Agenda
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Reinforcement - Natural-fibre composites: an overview
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 13
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Startup - When 3D printing meets sustainability
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 15
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - China - Xinzhou bets on the bamboo-based composites industry
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 17
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Wind - lnnovation in wind power through multi-process-capable systems
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 19
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 20
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 21
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Automation - Higher production capacity thanks to automated manufacturing
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 23
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 24
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 25
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Recycling ecosystem - Composites recycling: in search of the circular economy
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 27
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 28
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 29
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 30
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Mobility - A new generation of recycled composite materials for sustainable mobility
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 32
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Preimpregnated textile - Healable composites to improve circularity
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 34
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 35
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Process - New trends in composites and plastics recycling
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 37
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Raw materials - Innovative composites made from up to 92% reclaimed materials
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 39
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Construction - Biocomposites and automation: a sustainable future for the building industry
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 41
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Ressources - Waste-free composite wheel production
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 43
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Wind energy - From bottle to blade
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 45
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Durable composites - Upcycling plastic bottles into value-added composite applications
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 47
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Matrix - Novel thermoset composites for more competitive and sustainable industries
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 49
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 50
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Aerospace - Slinging rockets into space
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 52
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 53
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Aerospace - Composites push back the final frontier
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 55
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Railway - Composite overhead line catenary system for light rail
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 57
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 58
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Repair - Developing an eddy current-based sensor system for quality assurance of carbon fibres
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 60
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 61
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Inside the lab - Advanced Composite Materials Facility University of Southampton
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 63
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Resin - Development of new type of plastics: Polypropylene 2.0
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 65
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - Advertisers
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 67
JEC COMPOSITES MAGAZINE - Issue #136 - September/October 2020 - 68
https://www.nxtbook.fr/newpress/jeccomposites/jcm-experts-digest-additive-manufacturing-2020
https://www.nxtbook.fr/newpress/jeccomposites/jcm2101_138
https://www.nxtbook.fr/newpress/jeccomposites/jcm2011_Special_Issue4
https://www.nxtbook.fr/newpress/jeccomposites/jcm2011_137
https://www.nxtbook.fr/newpress/jeccomposites/jcm2009_136
https://www.nxtbook.fr/newpress/jeccomposites/jcm2007_135
https://www.nxtbook.fr/newpress/jeccomposites/jcm_2020_Q1_Innovation_Report
https://www.nxtbook.fr/newpress/jeccomposites/jcm2005_Special_Issue3
https://www.nxtbook.fr/newpress/jeccomposites/jcm2005_134
https://www.nxtbook.fr/newpress/jeccomposites/jcm2003_133
https://www.nxtbook.fr/newpress/jeccomposites/jcm2001_132
https://www.nxtbook.fr/newpress/jeccomposites/jcm1911_Special_Issue2
https://www.nxtbook.fr/newpress/jeccomposites/jcm1911_131
https://www.nxtbook.fr/newpress/jeccomposites/jcm1909_130
https://www.nxtbook.fr/newpress/jeccomposites/jcm1907_129
https://www.nxtbook.fr/newpress/jeccomposites/jcm1905_128
https://www.nxtbook.fr/newpress/jeccomposites/jcm1903_Special_Issue1
https://www.nxtbook.fr/newpress/jeccomposites/jcm1903_127
https://www.nxtbook.fr/newpress/jeccomposites/jcm1901_126
https://www.nxtbook.fr/newpress/jeccomposites/jcm1811_125
https://www.nxtbook.fr/newpress/jeccomposites/jcm1810_124
https://www.nxtbook.fr/newpress/jeccomposites/jcm1808_123
https://www.nxtbook.fr/newpress/jeccomposites/jcm1807_122
https://www.nxtbook.fr/newpress/jeccomposites/jcm1805_121
https://www.nxtbook.fr/newpress/jeccomposites/jcm1804_120
https://www.nxtbook.fr/newpress/jeccomposites/jcm1803_119
https://www.nxtbook.fr/newpress/jeccomposites/jcm1802_119-Supplement_Innovation_Report
https://www.nxtbook.fr/newpress/jeccomposites/jcm1801_118
https://www.nxtbook.fr/newpress/jeccomposites/jcm1711_117
https://www.nxtbook.fr/newpress/jeccomposites/jcm1710_116
https://www.nxtbook.fr/newpress/jeccomposites/jcm1708_115
https://www.nxtbook.fr/newpress/jeccomposites/jcm1707_114
https://www.nxtbook.fr/newpress/jeccomposites/jcm1706_113
https://www.nxtbook.fr/newpress/jeccomposites/jcm1704_112
https://www.nxtbook.fr/newpress/jeccomposites/jcm1703_111
https://www.nxtbook.fr/newpress/jeccomposites/jcm1701_110
https://www.nxtbook.fr/newpress/jeccomposites/jcm1611_109
https://www.nxtbook.fr/newpress/jeccomposites/jcm1610_108
https://www.nxtbook.fr/newpress/jeccomposites/jcm1608_107
https://www.nxtbook.fr/newpress/jeccomposites/jcm1607_106
https://www.nxtbook.fr/newpress/jeccomposites/jcm1605_105
https://www.nxtbook.fr/newpress/jeccomposites/jcm1604_104
https://www.nxtbook.fr/newpress/jeccomposites/jcm1603_103
https://www.nxtbook.fr/newpress/jeccomposites/jcm1601_102
https://www.nxtbook.fr/newpress/jeccomposites/jcm1511_101
https://www.nxtbook.fr/newpress/jeccomposites/jcm1510_100
https://www.nxtbook.fr/newpress/jeccomposites/jcm1509_99
https://www.nxtbook.fr/newpress/jeccomposites/jcm1507_98
https://www.nxtbook.fr/newpress/jeccomposites/jcm1505_97
https://www.nxtbook.fr/newpress/jeccomposites/jcm1504_96
https://www.nxtbook.com/newpress/jeccomposites/jcm1503_95
https://www.nxtbook.com/newpress/jeccomposites/jcm1501_94
https://www.nxtbook.com/newpress/jeccomposites/jcm1412_93
https://www.nxtbook.com/newpress/jeccomposites/jcm1410_92
https://www.nxtbook.com/newpress/jeccomposites/jcm1409_91
https://www.nxtbook.com/newpress/jeccomposites/jcm1406_90
https://www.nxtbook.com/newpress/jeccomposites/jcm1405_89
https://www.nxtbook.com/newpress/jeccomposites/jcm1404_88
https://www.nxtbook.com/newpress/jeccomposites/jcm1403_87
https://www.nxtbook.com/newpress/jeccomposites/jcm1401_86
https://www.nxtbook.com/newpress/jeccomposites/jcm1311_85
https://www.nxtbook.com/newpress/jeccomposites/jcm1310_84
https://www.nxtbook.com/newpress/jeccomposites/jcm1308_83
https://www.nxtbook.com/newpress/jeccomposites/jcm1307_82
https://www.nxtbook.com/newpress/jeccomposites/jcm1305_81
https://www.nxtbook.com/newpress/jeccomposites/jcm1304_80
https://www.nxtbook.com/newpress/jeccomposites/jcm1303_79
https://www.nxtbook.com/newpress/jeccomposites/jcm1301_78
https://www.nxtbook.com/newpress/jeccomposites/jcm1212_77
https://www.nxtbook.com/newpress/jeccomposites/jcm1210_76
https://www.nxtbook.com/newpress/jeccomposites/jcm1208_75
https://www.nxtbook.com/newpress/jeccomposites/jcm1207_74
https://www.nxtbook.com/newpress/jeccomposites/jcm1206_73
https://www.nxtbook.com/newpress/jeccomposites/jcm1204_72
https://www.nxtbook.com/newpress/jeccomposites/jcm1203_71
https://www.nxtbook.com/newpress/jeccomposites/jcm1201_70
https://www.nxtbook.com/newpress/jeccomposites/jcm1111_69
https://www.nxtbook.com/newpress/jeccomposites/jcm1110_68
https://www.nxtbook.com/newpress/jeccomposites/jcm1108_67
https://www.nxtbook.com/newpress/jeccomposites/jcm1107_66
https://www.nxtbook.com/newpress/jeccomposites/jcm1105_65
https://www.nxtbook.com/newpress/jeccomposites/jcm1104_64
https://www.nxtbook.com/newpress/jeccomposites/jcm1103_63
https://www.nxtbook.com/newpress/jeccomposites/jcm1101_62
https://www.nxtbook.com/newpress/jeccomposites/jcm1011_61
https://www.nxtbook.com/newpress/jeccomposites/jcm1010_60
https://www.nxtbook.com/newpress/jeccomposites/jcm1009_59
https://www.nxtbook.com/newpress/jeccomposites/jcm1006_58
https://www.nxtbook.com/newpress/jeccomposites/jcm1005_57
https://www.nxtbook.com/newpress/jeccomposites/jcm1004_56
https://www.nxtbook.com/newpress/jeccomposites/jcm1003_55
https://www.nxtbook.com/newpress/jeccomposites/jcm1001_54
https://www.nxtbook.com/newpress/jeccomposites/jcm0911_53
https://www.nxtbook.com/newpress/jeccomposites/jcm0910_52
https://www.nxtbook.com/newpress/jeccomposites/jcm0909_51
https://www.nxtbook.com/newpress/jeccomposites/jcm0907-08_50
https://www.nxtbook.com/newpress/jeccomposites/jcm0906_49
https://www.nxtbook.com/newpress/jeccomposites/jcm0904_48
https://www.nxtbook.com/newpress/jeccomposites/jcm0903_47
https://www.nxtbook.com/newpress/jeccomposites/jcm0901_46
https://www.nxtbook.com/newpress/jeccomposites/jcm0811_45
https://www.nxtbook.com/newpress/jeccomposites/jcm0810_44
https://www.nxtbook.com/newpress/jeccomposites/jcm0809_43
https://www.nxtbook.com/newpress/jeccomposites/jcm0807_42
https://www.nxtbook.com/newpress/jeccomposites/jcm0806_41
https://www.nxtbook.com/newpress/jeccomposites/jcm0805_40
https://www.nxtbook.com/newpress/jeccomposites/jcm0803_39
https://www.nxtbook.com/newpress/jeccomposites/jcm0801_38
https://www.nxtbook.com/newpress/jeccomposites/jcm0712_37
https://www.nxtbook.com/newpress/jeccomposites/jcm0710_36
https://www.nxtbook.com/newpress/jeccomposites/jcm0709_35
https://www.nxtbook.com/newpress/jeccomposites/jcm0707_34
https://www.nxtbook.com/newpress/jeccomposites/jcm0706_33
https://www.nxtbookmedia.com