JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 65
Bonding Dismantling plastic tailgates incorporating INDAR technology Plastic (polypropylene) to composite (sheet moulding compound) bonding is an innovative tailgate assembly method for hatchback cars. This new combination of materials gives consistent weight savings and greater design freedom. The use of debondable adhesives would undoubtedly make this new type of tailgate even more attractive. This paper presents the tests carried out on Plastic Omnium assemblies using a single-component polyurethane incorporating the INDAR dismantling technology developed by Rescoll. MAXIME OLIVE, KONSTANTIN SIPOS, RESCOLL TECHNOLOGICAL CENTER GUILHERME AMORIN, PLASTIC OMNIUM AUTO EXTERIOR, SIGMATECH HEINRICH SOMMER, MARTIN GEIS, EFTEC AG Focus Some 66 million adhesive-bonded windscreens are replaced worldwide every year. In Europe alone, nine million end-of-life vehicles generate more than two million metric tons of non-metal waste (glass, plastics and composites). The use of removable adhesives would help to considerably decrease the environmental impact of future vehicles, in compliance with ELV Directive 2000/53/EC. deviation in italic) and the type of failure was observed. The results are given in Table 1 below. Table 1: Shear tests on lab samples. P reliminary feasibility trials were conducted to test this original and innovative bond type. The trials comprised two main steps: from lab samples to full-scale assemblies. Lab tests Several test specimens were prepared using 25-mm-wide, 100-mm-long PP/SMC coupons. The test specimens were degreased prior to bonding and PP was then activated to enhance its surface thermodynamics. The specimens were bonded using standard 1K or INDAR-modified PU provided by EFTEC. The bonding area was 25 mm x 12 mm. The thickness was calibrated using 800-micron fishing thread. The specimens were fully cured for three days at room temperature. The dismantling technology incorporated into the adhesive makes it possible to debond the assembly after thermal activation. The debonding process includes three main steps: • activation of the specific additives at 165-170°C, thereby generating gases, • concentration of the gases at the interface and creation of local stresses, and • interfacial debonding characterized by a clean adhesive failure. The part disassembly step can be carried out at room temperature after cooling, following thermal activation at a specific temperature for a few minutes. Initial Blank Indar 2.9/0.7 CF* SMC 2.8/0,6 CF SMC Thermal activation 1.8/1 CF SMC & AF* SMC side Dismantling by hand AF SMC side *CF: Cohesive failure, AF: Adhesive failure Fig. 1: Failure types of INDAR samples. Shear tests were conducted at 23°C and 50% RH, at a shear rate of 100 mm/min and using five specimens per condition. Stress at break was measured in MPa (actual value in bold, standard The measured values clearly show the efficiency of the technology. The INDAR modification does not affect the initial No46 January-February 2009 / jec composites magazine 65
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009
Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009
Cover
Editorial
CONTENTS
NEWS WORLDWIDE
Companies - Ashland buys SmartTrac technology
- Gurit signs major contract in China
- Vestas inaugurates Asia R&D centre in Singapore
- Advertisers & Index
- NRC Aerospace: a structure at the heart of the Canadian aerospace industry
- Market Place
- Agenda of events
- Equipment - High-temperature composite moulds produced by infusion
- PCM Molds and Patterns Inc
- Innovations - Prepregs for aerospace applications
- Airframe development
BUSINESS
- Market survey - Market developments in woodplasticcomposites
- Niche market: Light aircraft / Full composite body gyroplane
- Trends - Subcontracting: increasing complexity andinterdependence
- Human Capital - Human resources manager
FEATURE - NATURAL FIBRES
- Overview - A review of biocomposite development
- Resources - The availability of vegetable fibre resources
- Recycling - Striking a balance between cost and properties: reuse of paper byproducts
- Additives - Jazz up your WPC: additives improve WPC mechanically and visually
- Prepreg - A novel prepreg material combining natural fibres with a furan resin
- Applications - Applications for plant fibre/ polymer composites in the industrial sector
- Industrial applications for naturalfibre-reinforced composites
USERS’PLATFORM
- Composites in the world - Seamless fluid-like design
- Like a dolphin
- Snow no longer necessary & Eco-friendly toys
- Successful partners - Manufacturing a fuselage via oneshot infusion
- Application - Lightweight bike frame using carbon fibre spread tow
- The largest Brazilian construction project using the “Wall System”
- The invisible house
KNOW-HOW
- Quality control - Advanced ultrasonic NDT techniques for wind turbine blade inspection
- Materials - Thermally-conductive composites
- Bonding - Dismantling plastic tailgates incorporating INDAR technology
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - Cover
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 2
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - Editorial
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - CONTENTS
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 5
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - Companies - Ashland buys SmartTrac technology
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Gurit signs major contract in China
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Vestas inaugurates Asia R&D centre in Singapore
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 9
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Advertisers & Index
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - NRC Aerospace: a structure at the heart of the Canadian aerospace industry
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 12
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Market Place
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 14
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 15
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Agenda of events
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 17
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Equipment - High-temperature composite moulds produced by infusion
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 19
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - PCM Molds and Patterns Inc
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 21
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Innovations - Prepregs for aerospace applications
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 23
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Airframe development
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - BUSINESS
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Market survey - Market developments in woodplasticcomposites
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 27
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Niche market: Light aircraft / Full composite body gyroplane
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Trends - Subcontracting: increasing complexity andinterdependence
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Human Capital - Human resources manager
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - FEATURE - NATURAL FIBRES
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Overview - A review of biocomposite development
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 33
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Resources - The availability of vegetable fibre resources
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 35
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 36
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Recycling - Striking a balance between cost and properties: reuse of paper byproducts
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 38
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Additives - Jazz up your WPC: additives improve WPC mechanically and visually
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 40
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Prepreg - A novel prepreg material combining natural fibres with a furan resin
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 42
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Applications - Applications for plant fibre/ polymer composites in the industrial sector
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 44
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 45
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Industrial applications for naturalfibre-reinforced composites
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 47
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 48
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - USERS’PLATFORM
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Like a dolphin
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Snow no longer necessary & Eco-friendly toys
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Successful partners - Manufacturing a fuselage via oneshot infusion
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 53
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Application - Lightweight bike frame using carbon fibre spread tow
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - The largest Brazilian construction project using the “Wall System”
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - The invisible house
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - KNOW-HOW
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Quality control - Advanced ultrasonic NDT techniques for wind turbine blade inspection
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 59
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 60
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Materials - Thermally-conductive composites
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 62
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 63
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 64
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - - Bonding - Dismantling plastic tailgates incorporating INDAR technology
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 66
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 67
JEC COMPOSITES MAGAZINE - Issue #46 - January/February 2009 - 68
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