Coatings of Polymers and Plastics Part 1 docx

[...]... Automotive Plastics Market 11 FIG 11 Example of polyurea used in fenders: GMT 800 rear-quarter panel of Dow SPECTRIM HH390 polyurea RRIM FIG 12 Example of polycarbonate used in lens cover: 20 01 Ford Mondeo headlight assembly with a PC lens cover and metallized reflector 12 Babinec and Cornell FIG 13 Unpainted ASA/AES mirror housing Programs are underway to develop lightweight and intrusion-resistant... demanding 1 2 Babinec and Cornell FIG 1 Global consumption of major plastics in 2000 (From Ref 2.) durable goods applications, and thus also enjoy a significant global volume The engineering plastics include polyurethanes (PU) and polyurea; acrylonitrile/ butadiene/styrene (ABS) and styrene/acrylonitrile (SAN) copolymers; polycarbonates (PC); polyamides (PA); and polybutylene terephthalates (PBT) and. .. metals, they offer the combination of inherent corrosion resistance and high strength Examples of such applications include fencing, park benches, and automotive fuel tanks and exterior components Both durable and nondurable applications often require the plastics to be either printed or coated As such, the interfacial characteristics of the plastic and the particular ink or coating are typically of concern... burden of this additional cost Thus, the use of coated plastics is very important in the automotive market in which the performance demands are high, and their maintenance throughout the vehicle lifetime is paramount 1. 1 Automotive Plastics Markets The automotive industry exploits the entire range of performance characteristics offered by many polymer and plastic families Table 1 lists the major plastics. .. with demands that cannot be met by traditional materials Figure 1 shows the relative global consumption of major polymers Polyethylene (PE), polypropylene (PP), and polyvinyl chloride (PVC) represent over 80% of the global total volume, primarily because of their dominance in packaging and building and construction markets However, engineering thermoset and thermoplastic polymers also offer outstanding... panels of pickup trucks because of their lightweight, resistance to damage, high surface quality, and often lower cost than SMC or multipart assembled metal alternatives FIG 8 Example of PC/ABS used in wheel covers: Pontiac Grand AM GT 10 Babinec and Cornell FIG 9 Example of PC/ABS used in body panels: Saturn PC/ABS door panels The major vehicle exterior applications for polycarbonate and acrylic polymers. .. (Fig 12 ) Damage resistance and optical clarity are the required performance characteristics Plastic headlight and front signal-light lens covers are made of polycarbonate, often coated with protective transparent organosilane coatings Rear lighting modules tend to use uncoated acrylics for lens covers FIG 10 Unpainted TPO cladding on the 20 01 Chrysler Grand Cherokee Overview of the Automotive Plastics. .. provides protection from the chemical and physical assaults of the environment Another example is the PET bottle, which is coated with plasma-deposited SiO2 and other SiCO barrier coatings to prolong the shelf life of its contents Overview of the Automotive Plastics Market 3 Because the coating of plastics is often driven by the need for excellent appearance and enhanced performance under extended... protective coatings The major exterior automotive use for PP, unblended with elastomer, is in noncosmetic energy-management foams for bumper systems Such parts are rarely coated or painted Painted alloys of PPO and PS and pigmented, unpainted blends of ASA/ AES are often used on exterior applications such as cowl-vent grills and mirror housings (Fig 13 ) Included in the “other” category of polymers used... alloys of PPO and PA, which are increasingly used for lightweight body panels to improve fuel economy (Fig 14 ) The high-temperature stability of these blends enables them to be mounted on the vehicle body prior to painting, thus accommodating existing assembly line logistics Many of these PPO/PA blends FIG 14 20 01 Volkswagen Beetle fender of PPO/PA Overview of the Automotive Plastics Market 13 also . York, NY 10 016 tel: 212 -696-9000; fax: 212 -685-4540 Eastern Hemisphere Distribution Marcel Dekker AG Hutgasse 4, Postfach 812 , CH-40 01 Basel, Switzerland tel: 41- 61- 260-6300; fax: 41- 61- 260-6333 World. Berta 4 Polymers for Coatings for Plastics 12 1 J. David Nordstrom 5 Performance and Durability Testing 15 7 Philip V. Yaneff 6 Painting Problems 203 Clifford K. Schoff 7 Recycling of Automotive Plastics. Processing and Sintering, M. N. Rahaman 11 . Composites Engineering Handbook, edited by P. K. Mallick 12 . Porosity of Ceramics, Roy W. Rice 13 . Intermetallic and Ceramic Coatings,