Loctite MAX 3 – the Latest Generation of Polyurethane Matrix Resins

  Loctite MAX 3 – the Latest Generation of Polyurethane Matrix Resins

Polyurethane matrix resin from Henkel combines high temperature resistance
with an outstanding quality of finish in composite components

K 2013

Business Wire

SHANGHAI -- October 16, 2013

Through the development of its new polyurethane matrix resin, Loctite MAX 3,
Henkel has taken a further important step toward fully automated series
production of composite components for the automotive industry. In
collaboration with KraussMaffei, Henkel – the world market leader for
adhesives, sealants and surface treatment technologies – has developed a
process for the manufacture of components based on glass or carbon fiber and
using high-pressure RTM (HP-RTM) technology that creates a surface quality
good enough for automobile exteriors. Using a model of the light,
high-strength carbon fiber roof segment of the Roding Roadster R1, this
innovative production process is due to be presented at “K,” the world’s most
important trade fair for the plastics and rubber industries, due to place from
October 16 to 23 in Düsseldorf.

Lightweight component of carbon fibers impregnated by Henkel's composite
matrix resin: Cover section ...

Lightweight component of carbon fibers impregnated by Henkel's composite
matrix resin: Cover section for central consoles from Ningbo Huaxiang (NBHX).
(Photo: Business Wire)

Lightweight construction technologies are gaining ever more importance in the
automotive industry because they help reduce the weight of the overall
vehicle, something that is becoming a necessity in the face of strict exhaust
requirements and as an avenue for decreasing both fuel consumption and CO[2]
emissions. Composite materials based on carbon or glass fibers combine
lightness in weight with enormous strength, thus offering outstanding
properties in relation to safety and crash behavior. Until now, there have
been certain limitations in the use of lightweight components. They are
restricted in the degree to which they can meet the requirements of the
automotive industry with respect to cycle times and level of automation. In
particular, composites have been very rarely used for the external components
of production vehicles, as the requisite post-treatment of the surface for
subsequent painting has been too time-consuming and had to be performed
manually. KraussMaffei, a leading manufacturer of machinery for plastics
manufacturing and processing, together with Henkel as a specialist for matrix
resin, and Rühl Puromer GmbH, a globally active independent polyurethane
systems house, has succeeded in producing – in a fully automated process –
composite components with a surface quality suitable for immediate painting.
This has become possible thanks to the development of Loctite MAX 3, a
three-component polyurethane-based matrix resin system from Henkel that
contains not only the resin and hardener but also a high-performance internal
release agent matched to a self-releasing polyurethane lacquer from Rühl
Puromer GmbH. Thus, Henkel – together with Dieffenbacher, Zoltek, Chomarat,
Rühl Puromer, Alpex, Mühlmeier and Roding Automotive – has become part of
KraussMaffei’s network of specialist partners contributing to the
establishment of a mature, reliable production chain extending from the fibers
and matrix materials through to the finished component.

Increased temperature resistance directly after demolding

This polyurethane-based matrix resin technology from Henkel is characterized
by significantly faster curing compared to the epoxy resins usually used for
the RTM (resin transfer molding) process. Due to its low viscosity, the resin
penetrates the fiber material more easily and with less disruption, giving
rise to shorter injection times and thus short cycle times in series
production. The outstanding toughness of Loctite MAX 3 also facilitates
achievement of an optimized component structure. Henkel has likewise improved
the temperature resistance of the PUR resin, taking Loctite MAX 3 to a level
comparable with that of epoxy resins in relation to this particular property.
This high temperature resistance means that the fiber-reinforced composites
can be demolded more quickly. With the internal release agent ensuring easy
detachment of the component from its mold, the resultant surface is of
sufficiently high quality to allow immediate painting and bonding. This
accelerates the production process and enables manufacture of external and
visible components of outstanding surface quality.

Flexible inclusion within an integrated concept

For the automotive industry particularly, integration within an overall
package is essential for this technology to be regarded as application ready.
Consequently, Henkel offers individually formulated adhesives designed to
ensure the reliable process integration of the different component materials
within the framework of advanced multimaterial concepts. The various elements
must be ideally coordinated if the adhesives are to perform to their full
potential. “With Loctite MAX 3, we now have a matrix resin system that further
increases the feasibility and attractiveness of manufacturing automotive parts
from composite materials,” says Frank Deutschländer, Global Market Manager
Automotive at Henkel AG & Co. KGaA. “Working closely with KraussMaffei, we
have optimized the properties of our resin so that both painted coatings and
adhesives can be applied to the resultant composite surface without the need
for any pretreatment.” With the adhesives portfolio from Henkel, this gives
rise to a complete system solution enabling the manufacture and integration of
composite components in automobiles.

Experts from Henkel will be available at “K 2013” from October 16 to 23, at
the KraussMaffei booth in Hall 15 (Stand B27/C24/C27/D24), ready to answer
questions and provide insights and information regarding the company’s product
solutions for composite production.

You can find further information at www.henkel.com/automotive.

Loctite is a registered trademark of Henkel in Germany and elsewhere.

Henkel operates worldwide with leading brands and technologies in three
business areas: Laundry & Home Care, Beauty Care and Adhesive Technologies.
Founded in 1876, Henkel holds globally leading market positions both in the
consumer and industrial businesses with well-known brands such as Persil,
Schwarzkopf and Loctite. Henkel employs about 47,000 people and reported sales
of 16,510 million euros and adjusted operating profit of 2,335 million euros
in fiscal 2012. Henkel’s preferred shares are listed in the German stock index

Photo material is available at http://www.henkel.com/press

Photos/Multimedia Gallery Available:



Jake Kim, +86.21.2891.8712 (Shanghai Office)
Business Development Manager - Adhesives
AT Asia Pacific
Henkel Adhesive Technologies
Echo Liu, +86.21.28915832
AT Marketing Communication
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