JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 31
Fig. 2: High-pressure RTM injection concept
Fig. 4: Compression moulding production set-up
Fig. 3: Compression moulding process
Compression moulding – a complementary solution to HP-RTM
The compression moulding process
enables faster part production for
several reasons. Firstly, it eliminates
the injection process. Instead, the resin system is filmed in the “liquid lay
down” process onto a stack of fabric
outside the mould. Secondly, with no
injection step, the mould can operate
Tab. 1: Araldite® epoxy systems for mass production. Production cycles comparison.
Fastest HP RTM solutions
XB 3585
XB 3458
XB 3585
Aradur® 3475
Preform / fabric
lay-up set (1)
Fastest wet compression
moulding solutions
XB 3585
XB 3585
Aradur® 3475
120-140°C
120-140°C
> 2 min
> 1 min
4 min
3 min
1 min
Mould temperature
100°C
110°C
Injection
up to 0.5 min
(small to medium part)
up to 1 min
(small to large part)
Cure
> 5 min
> 2 min
Demoulding
Part production time
(minimum)
(1)
1 min
7.5 min
5 min
Includes mould closure and vacuum
No82 July 2013 /
Feature Automotive
Moving from standard RTM also
known as “low-pressure RTM” to
“high-pressure RTM” allows a significant reduction of part production
time. Indeed, whereas the system’s
components are mixed through a
static mixer in standard RTM, the
mixing in HP-RTM is managed by
the high-speed counter-flow of the
reactive components with appropriate
injectors or “jets” in a cylindrical
mixing chamber (whose diameter can
be as small as 4-5mm) at high pressure, most commonly above 50 bars.
The chemicals meet and mix thoroughly in the small cylindrical cavity,
converting their kinetic energy into
turbulence.
at a higher temperature and the resin
system can cure faster. In HP-RTM,
the mould temperature should be low
enough to ensure latency and low
viscosity of the resin system during
the injection. Faster production
coupled with lower investment versus
HP-RTM results in significant part
production cost reduction whenever
justified by low complexity parts.
Resin XB 3585/Hardener 3458 has
been the market reference for fast
RTM part production for many years,
with a 7.5-minute cycle time. It also
allows 4 minutes in compression
moulding, resulting in 45% part production time reduction in comparison
to HP-RTM.
The market is looking for continuous
improvements, two of them being
further reduction of part production
as well as an increase in latency during
mould filling in order to produce large
parts. The new Resin XB 3585/
Aradur® 3475 system meets both these
requirements as it allows parts to be
produced in 5 minutes and 3 minutes
respectively in HP-RTM and compression moulding, while exhibiting
jec composites magazine 31
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013
Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #82 - July 2013
Cover
Edito
Point of view > quality & service
Contents
Agenda of Events
COMPANY & BUSINESS In Brief
APPLICATIONS
Buses
UAV
Offshore
MARKET
Bio-resins
China
FEATURE AUTOMOTIVE
Manufacturing
Reinforcement
Body panel
Suspension
Wishbone
Seats
Beam
Urban vehicle
RESEARCH & DEVELOPMENT 3D fabric
TECHNOLOGY & INNOVATIONS
RTM
RTM
Thermoplastic
Index
In the world
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Cover
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 2
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Edito
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Point of view > quality & service
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 5
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Contents
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 7
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Agenda of Events
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 9
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - COMPANY & BUSINESS In Brief
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 11
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 12
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Ad1
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Ad2
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Buses
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 14
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - UAV
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Offshore
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 17
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Bio-resins
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 19
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 20
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 21
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - China
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 23
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 24
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Manufacturing
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 26
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 27
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 28
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 29
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 30
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 31
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 32
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Reinforcement
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 34
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 35
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Body panel
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 37
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Suspension
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 39
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Wishbone
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 41
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 42
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Seats
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 44
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 45
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 46
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Beam
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 48
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 49
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 50
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Urban vehicle
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 52
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 53
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 54
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - RESEARCH & DEVELOPMENT 3D fabric
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 56
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 57
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 58
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 59
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 60
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - RTM
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 62
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - RTM
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Thermoplastic
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - Index
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - In the world
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 67
JEC COMPOSITES MAGAZINE - Issue #82 - July 2013 - 68
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