Automotive interiors

MVSS 302 materials for automotive interiors burning rate... 

Aryl Phosphates. Aryl phosphates were introduced into commercial use early in the twentieth century for flammable plastics such as cellulose nitrate and later for cellulose acetate. CeUulosics are a significant area of use but are exceeded now by plastici2ed vinyls (93—95). Principal appHcations are in wire and cable insulation, coimectors, automotive interiors, vinyl moisture barriers, plastic greenhouses (Japan), furniture upholstery, conveyer belts (especially in mining), and vinyl foams. 

In vinyls, the aryl phosphates are frequently used in combinations with phthalate plastici2ers. The proportion of the more expensive phosphate is usually chosen so as to permit the product to reflably pass the flammability specifications. In plastici2ed vinyls used in automotive interiors, these phosphates are used to pass the Federal Motor Vehicle Safety Standard 302. 

Water-borne adhesives are preferred because of restrictions on the use of solvents. Low viscosity prepolymers are emulsified in water, followed by chain extension with water-soluble glycols or diamines. As cross-linker PMDI can be used, which has a shelf life of 5 to 6 h in water. Water-borne polyurethane coatings are used for vacuum forming of PVC sheeting to ABS shells in automotive interior door panels, for the lamination of ABS/PVC film to treated polypropylene foam for use in automotive instmment panels, as metal primers for steering wheels, in flexible packaging lamination, as shoe sole adhesive, and as tie coats for polyurethane-coated fabrics. PMDI is also used as a binder for reconstituted wood products and as a foundry core binder. 

Automotive (interior and exterior parts, air ducts, crash pads, arm rests, etc.)... 

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. 

The article describes the process of producing expanded polypropylene foam parts with a solid integral skin on one side, citing a bicycle helmet moulded from BASF s Neopolen EPP bead, as an illustration. The self-skinning EPP process reqnires some modification of standard beadmoulding equipment, needing an extra steam chamber. Automotive interior trim is a potential application for the process. 

As the size of the molded product becomes larger it is more difficult to control uniformity and to maintain a sufficient clamping force to keep the mold closed during filling. RIM overcomes these problems by largely carrying out the polymerization reaction in the mold. The most widely used RIM materials are PU and PU-reinforced elastomeric materials. Most of the automotive interior panels (such as dashboards) are produced using RIM. 

Other possible applications are clear coats in automotive interiors (dashboard instrument screen-printed and top coats for gloss control, interior vinyl clear coat with excellent mar resistance and low gloss, wood grain printing and top coats for interior laminates), on alloy wheels and wheel covers and under the hood parts, and UV curable paint over physical vapor deposition (PVD) surfaces of various parts. Other examples are ... 

Blends consisting of poly(4-phenylene ether) and nylon-66 were prepared by Miyoshi et al. (2) and used to prepare automotive interior components. Extruder conditions were virtually identical to those described in step 2. 

Electrical connectors, automotive interior parts (e.g., computers, connectors, housing in electricl industry, board, electrical connectors, automotive industry, transportation)... 

For end uses demanding high dye lightfastness such as automotive interior fabrics, select premetallized dyes and uv inhibitors are applied through the dye bath (179—182). Nylon can also be codyed with polyurethane elastomeric fibers, wool, acrylics, polyesters, and cellulosics (183). 

Hoshino, K., Kato, S., Tanabe, S., Ataka, Y., Ogawa, S. and Shimofuji, T. (2005) Measurement of VOC and SVOC emitted from automotive interior materials by thermal desorption test chamber method. Proceedings of the 10th International... 

Nranian, M., McCallum, J.B. and Kelly, M. (1987) An Overview of Automotive Interior Glass Light Scattering Film, SAE Technical Paper Series 870313, Society of Automotive Engineers, Warrendale, PA, USA. 

Automobile Components Automotive Interiors Electrical Systems Instrument Panels Seat Systems Flooring Systems Entertainment Wireless Systems Keyless Entry Systems... 

Uses are extensive such as electronic instrument housings, telephones, sports gear, automotive grilles, furniture, etc. It is electroplatable, good as a structural foam, and available as a tinted transparent. Other applications include luggage, truck caps, spas, RV and automotive interior and exterior panels and trim, appliances, refrigerator liners, table tops and leisure crafts. 

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