8:30 am – 9:00 am:
Reflections on Evolution and Growth of TPOs.
Mark Barrera, Senior Project Engineer, Asahi Kasei Plastics NA, Inc.
Thermoplastic Polyolefins (TPOs) have become very dominant materials among automotive plastics. Because of their versatility with formulation changes the TPOs are currently being used in all automotive applications. The presentation will cover how the TPOs were evolved and why the automotive applications are growing rapidly.
Laura Weaver, Eastman Chemical
The fusion of electronics with glass and plastics to create smart surfaces with a harmonious luxury ambiance is creating a flurry of development activity which is changing the driver/passenger experience in the transportation industry. Merging human machine interface (HMI) displays, controls, and knobs with other decorative plastic components is being driven in part by the desire to reduce/eliminate distractions (safety) in addition to bringing a stylish atmosphere which increases consumer satisfaction. For displays, the desire to move away from the typical two dimensional 7- inch rectangular shape towards larger and different shapes (curved and non-rectangular) becomes a challenge in and of itself because glass has a lower design freedom for forming curvature and tempered glass is considered costly. Plastic covered displays are easier to produce 3 dimensional shapes via either injection molding or vacuum lamination of films, and their light transmitting abilities are similar to glass. As is observed with some glass display surfaces, certain plastics are also prone to birefringence caused by molded in stress which contributes to poor distinctness of image and reading legibility. Choice of polymer and glass surfaces for integrated HMI displays in instrument and door panels, or seat backs is the center of attention given the vast number of requirements of the automotive industry. This paper will focus on the characteristics of bio-based, low birefringent cellulose acetate propionate (CAP) as potential HMI-lens covers in comparison to other clear polymers.
9:30 am – 10:00 am:
Introduction to the Usage of Thermally Conductive Compounds in Automotive Lighting
Paula Kruger, DSM
Automotive lighting and electronics are under constant pressure for cost savings while facing increasing demands in performance. DSM Thermally Conductive Arnite AV2 370XL-T has unique combination of thermal conductivity, high stiffness and dimensional stability makes it suitable for automotive lighting components. Balanced thermal and mechanical properties proven advantages over other material alternatives.
10:00 am – 10:30 am:
New Resin for Liquid Cooled Modules in Electric Vehicle Battery Packs (EVBPs)
Rudy Gorny, Covestro LLC
A new concept for liquid cooled modules in electric vehicle battery packs (EVBPs) is presented. This concept requires resins with high hydrolytic stability. A new polycarbonate blend was developed that meets the requirements for this new application.
10:30 am – 11:00 am:
Improving Long Term Corrosion Resistance in Electronic Applications
Josh McIlvaine, DuPont
Electronic components have invaded the automotive environment with increasingly complex designs and functionality. In addition, the location and environment of these components continues to drive the requirements to higher performance materials. The combination of exposure to electrical potential, moisture, elevated temperature and environmental salt can affect the performance of electronic components. DuPont has developed a line of “EF” Electrically Friendly resins which will help reduce the risk of long term corrosion or performance degradation in aggressive environments.
11:00 am – 11:30 am:
Advances in Hydrolysis Resistance PBT Resins for Electronic Applications Including Connectors and HEV Components
Dave Spritzer, DuPont
DuPont has developed a new PBT hydrolysis resistance technology to offer outstanding melt stability during molding. The process flexibility of this family of resins allows for more stable manufacturing processes and improvements in quality versus existing PBT HR grades on the market. This unique combination allows a wider processing window, including the use of hot-runners and regrind, without sacrificing the hydrolysis resistance as well as additional benefits for high voltage connectors and electronic applications.
8:00 am – 11:30 am:
W3-Bioplastics: Processing, Blends and Composites
(Moderator: Margaret Sobkowicz-Kline)-Room S320A
8:00 am – 8:30 am:
Physical Foaming Using High Pressure Gas Saturation for Biopolymer Applications
Juan Fernando Campuzano Vallejo, Mechanical Engineer, ICIPC (Instituto de Capacitación e Investigación del Plástico y del Caucho)
Foaming technology is a useful way to optimize material consumption in plastic processing, increasing the material cost/benefit ratio and improving some properties such as the impact resistance, the insulation properties, and the dimension stability, among others. For compostable biopolymers, the foaming technology should not affect the biodegradation properties of the material. This work is oriented to analyze the effect of foaming parameters on the density and material hardness in a foamed poly lactide acid (PLA) part. In the foaming process, the PLA pellets are exposed at room temperature to a highly pressurized gas in order to saturate the pellets, then the material is processed in an injection molding machine. The effect of saturation and desorption time before the injection molding process is studied. A PLA from Nature Works is used. The most recommendable process window for the foaming of the material is proposed.
8:30 am – 9:00 am:
Study of Biocompatibilizer for New Renewable Blends of Polypropylene Carbonate and Polybutylene Succinate
Barbara Calderon, Umass Lowell
The lack of commercially relevant compatibilizers from renewable sources is limiting the usage of biopolymer blends and composites in today’s market. This work studies potential new compatibilizers that can be used in applications involving blends of sustainable polycarbonates and polyesters. Poly(propylene carbonate) (PPC) and poly(butylene succinate) (PBS) were functionalized separately using maleic anhydride (MAH) and an initiator to trigger free radical grafting. Different amounts of MAH were used during the melt compounding to study the effect of the MAH amount on the extent of the reaction. The resulting compounds were examined by means of titration, proton NMR and parallel plate rheometry. Formulations using both PPC and PBS successfully reacted with MAH, as evidenced by the appearance of new chemical shifts in their proton NMR spectra associated with midchain grafting and end groups reactions. The PPC compounds showed an increase of the grafting efficiency with addition of more MAH. The PBS formulations had maximum grafting efficiency value at 2% MAH. Rheometry showed that incorporation of 2% of MAH and DCP produced an increase in the viscosity of both PPC and PBS in comparison to their neat counterparts. Evaluating all these results together, it can be concluded that the PPC with 2% MAH and DCP is the most reactive compound and the one that could perform more efficiently as a compatibilizer. In addition, melt compounding presents an economic method to produce biocompatibilizers of high reactivity and high molecular weight.
9:00 am – 9:30 am:
Mechanical Properties and Effects of Microfibrillation of 100 % Biomass Sisal-PLA Composite
Hiroyuki Nishimura, Kyoto Institute of Technology
The mechanical properties of sisal-PLA composites were measured with a parameter of length of sisal fiber, degree of microfibrillation, and mixing method of sisal fiber. The mechanical properties of sisal-PLA composites were also compared with those of wood flour, cellulose based on hardwood, and cellulose nanofiber composites. As a result, the higher tensile strength of the sisal-PLA composite was obtained by kneading PLA and microfibrillated sisal fiber wetted with organic solvent.