Trim, automotive polymers

New polymer structures allow the control of processability and final characteristics. For example, Mitsui is launching nanostructured metallocene alpha-olefins that have a crystallite size of the order of nanometres instead of microns as for conventional metallocene polyolefins. This yields a better balance of transparency, heat resistance, flexibility and elasticity characteristics. Targeted applications are automotive interior trim, packaging film, construction materials, protective films for electronic and optical parts, sealing products and as polymer modifiers. 

Reaction injection molding (RIM) is a fast, low-pressure, low-temperature, low-cost process for one-step conversion of reactive liquids into large finished solid plastic products. Liquid polyol and liquid diisocyanate are mixed by impingement, pumped instantly to fill a large mold cavity, and polymerize/ cure rapidly to form a thermoset polyurethane product. The cured polymer may be a stiffly flexible product such as automotive bumper covers, front ends, and trim or a rigid foamed product such as furniture and housings (cabinets) for computers, business machines, TY and radio. 

Major polymer applications electronics (computer and television housings, keyboard frames, interface boxes), automotive (instrument panels, interior and exterior trim, glove compartments, wheel covers, electric connectors, ftise boxes), air conditioner housings, hospital and office fiimiture, production of blends... 

BFG. [BFGoodrich/Spec. Polymers] Vinyl compds. for inj. moldng, extiu-siott medcal, wire and cable, automotive trim. 

Problems associated with the deposition of "fog on automotive windscreens have been with us for many years, but only relatively recently has this problem assumed real importance, as most of the major car companies in the USA, Europe, and Japan now ask for compliance to their own fogging tests for most interior trim components. The problem is not specifically related to cellular polymers, and indeed much of the interior trim can be seen not to be cellular. It could also be true that most of the windscreen fogging is derived from air external to the car interior, e.g.. exhaust fumes from traffic. 

Acrylate Styrene Acrylonitrile Polymer Acrylic rubber-modified thermoplastic with high weatherability. Acrylate Styrene Acrylonitrile Polymer has good heat and chemical resistance, toughness, rigidity, and antistatic properties. Processed by extrusion, thermoforming, and molding. Used in construction, leisure, and automotive applications such as siding, exterior auto trim, and in outdoor furniture. 

Uses Outdoor-weatherable injection molding resin for interior and exterior automotive/truck/RV trim and parts, building and construction applies., window frames, streetlight housings, road signs, etc. modifier for polymers incl. PVC... 

The nano-level dispersion of clay in thermoplastic olefin (TPO) polymer has potentially provided a platform for its use in automotive body panels of Volvo cars. The governing factors are light weight, consistent physical and mechanical properties, improved aesthetic appearance, improved wear resistance, and low temperature ductility. Recyclability of nano-clay incorporated thermoplastic olefin nanocomposites has provided an opportunity for their use in step assists and trim and panel in Hummer cars. 

Boldizar, A., Klason, C., Kubat, J., Naslund, R, and Saha, P. 1987. Inst. J. Polym. Mater., 11, 229. Henstock, M. E. 1988. Design for Recyclability. The Institute of Metals, London, England. Haylock, J. C., Addeo, A., and Hogan, A. J. 1990. Thermoplastic olefins for automotive soft interior trim. SAE International Congress and Exposition, Detroit, MI (Feb. 26—March 2, 1990). 

Automotive applications range from window seals and gasketing to enhanced noise/vibration attenuation. The polymers are candidates for automotive seating, interior padded trim and insulation, hospital padding, and topper pads. SEES is extruded/blown into 1-mil films for disposable gloves for surgical/hospital/dental, food/pharmaceutical, and household markets. ... 

Non-FR grades of PC/ABS blends are primarily used in automotive components (e.g., interior-trim panels, knee bolsters, and nonstructural interior filler panels) where cost is an issue and thermal requirements do not necessitate use of a more expensive polymer such as PC, but ductility is important. 

The amount of plasticizer added to a polymer varies depending on the effect required. A small addition of plasticizer may be made to improve the workability of the polymer melt. This contrasts with large additions made with the specific intention of completely transforming the properties of the product. PVC without a plasticizer, ie, unplasticized PVC (PVC-U), is used in applications such as pipes, siding, and window profiles. With plasticizer added, articles such as automotive interior trim, jacketing, cable insulations, and PVC floorings are formed. 

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