Info

Este artículo fue escrito originalmente en Spanish. Se ha traducido automáticamente para su comodidad. Se han hecho esfuerzos razonables para proporcionar una traducción precisa; sin embargo, ninguna traducción automática es perfecta, ni es su intención la de sustituir a un traductor humano. El artículo original en Spanish puede verlo en El automóvil se viste de gala
The use of plastics inside and outside of it is already a necessity

The car wears gala

01/02/2002
Products such as polyurethanes, paints, coatings, elastomers, fluoroproductos and, of course, technical polymers contribute to the development of more efficient and lighter cars, with an economic value added and more profitable. Technical polymers, for example, are helping much to the development of new models and new functions in automobiles. In this article, we see numerous possible applications with plastics.
Imagen
European cars today contain between 130 and 140 kilograms of plastic. Technical polymers constitute only 15 per cent of this amount. The average number of technical polymers in European automobiles is 22 kilograms. This market is growing faster than the overall market of plastics. The strategy of DuPont, for example, relies on the identification of the needs of the market and to offer solutions to meet those needs. Many suppliers of materials aims to create new market opportunities for polymers technicians through the "intelligent replacement" of the metal, the rubber and the hardened plastic. If the average number of technical polymers in European cars of up to 30 kg, we must not forget that you there are between 40 and 50 kilograms of elastomers and more than 1,000 kilograms of metal per vehicle.

Therefore, it is not surprising to see a rapid growth path in the replacement of such materials.

Plastics producers know that the development of new products only have value if they are adapted to the needs of the industry and customers, while they offer solutions to those needs. It is therefore very common collaboration with the automotive industry itself, since they are common knowledge for application in highly specialized areas, among which include segments of body or train engine, external, interior, chassis, electrical and electronic thermal management. A good example is the PC of the Mercedes Benz class Sportcoupé panel. Many drivers have struck an obstacle located on the ground when they were driving back down because they had not seen him. Users of this model of Mercedes won't they happen this thanks to the transparent panelling with PC Makrolon from Bayer. It is located on the top of the casket that blanket the tuition and expands the field of vision to the rear. Complete the proper rear Moon and extends almost to full-width of the rear door. The panel was very long and complex geometry and could not take place in glass, so it turned to the polycarbonate.

In another order of things, good management of the life cycle is based on the monitoring of applications during whole life cycle curve. Thanks to the management of the applications during all their life cycles, from a first embryonic stage through his appearance in the market and upgrading, to his initial replacement and decline, creates value for customers through innovation to adapt to new trends and industry standards, and gains in productivity to improve materials and increase the performance of the processing.

Other examples

Wheel covers have been produced are at nylon for years. This application is beginning to replace their usual material for polyolefins. It's a typical mature application. However, the industry of the automotive industry as a whole, from those responsible for molding manufacturers of vehicles, still want take advantage of this application through improvements in productivity. DuPont Engineering Polymers has proposed a solution which is to develop qualities of reinforced resin Minlon of lower cost, allowing to reduce the thickness of the walls of the covers of wheels, and therefore also its weight significantlyas well as offering a savings in production costs.

On the other hand, there is a demand increase in elements of comfort in the car, which in turn require more engines and electric actuators. The increasing demand of electrical devices for the regulation of the seating is a good example of this trend. To replace the metal with resin of Delrin acetal in such devices, manufacturers benefit from a reduction in weight and savings in production costs; on the other hand, this material allows the installation of the power seats in utility regulation systems and medium-sized vehicles, in addition to luxury car.

Sometimes, it is possible to add substantial value due to the updating of moulding processes. For these engines and electric actuators, the exterior moulding of the accommodation of these boards made in Delrin Hytrel thermoplastic polyester elastomer meant an immediate savings in costs, in terms of greater hardness and resistance to wear and fatigue of the component.

Cycle durations can also be reduced to shaping bolts for cars using the new nylon Zytel ST Advantage, rather than the standard Zytel resin resin. This material has less filling pressure and a lowest temperature of smelting, features, along with the reduced duration of the cycles of Zytel ST Advantage, resulting in significant savings in the costs of moulding.

Interest always on the rise of the automotive industry to reduce NVH (noise, vibration and mechanical resistance) problems has been one of the main factors that have prompted the development of resonators for increased performance. However, the appearance of the engines supercharged with higher temperatures under the bonnet implies the need to use more sophisticated resins in this type of application. DuPont Engineering Polymers to the automotive industry offers a solution to both problems through a specially developed quality of polyamide high performance Zytel HTN resonators of car that supports high temperatures up 160 ° c for turbocharged engines. The value in this case is achieved through a simple, cost-effective solution for two obvious needs of the industry. The result is both innovative and exciting: a soldier resonator of Zytel HTN.

The replacement of metal components is one of the main objectives of DuPont Engineering Polymers market in relation to the development of new applications. The accommodation of the sensor and the thermostat is a good example of the replacement of the metal with technical polymers in innovative ways.

The use of technical polymers in these applications contribute to the substantial reduction of costs through the integration of the components in the design, which implies the subsequent reduction in the number of pieces (and Assembly costs) and lower weight. Recently, the polyamide high performance Zytel HTN of DuPont has been selected to replace a more expensive material in the manufacture of the thermostat housing; the result was a simple production and an improvement in physical properties.

No less important is the aesthetics of the car. The new Mercedes SLK, a two-seat very athletic 'look' is regarded as a gift for the view. In design they have had an important role, for example, the front and rear bumpers and side trim of the mouths of entry. In the three works we have Bayflex 180 GR, polyurethane that is transformed by RRIM (reinforced reaction injection moulding) of thin-walled. Components PUR are injected into the mold with a fraction of short fibres. You get parts of thin wall, light but rigid while the torsion and stable dimensions.

The hands of this model are also very attractive. They are made from the Durethan PA which provides great stability to the temperature and chemical resistance, for example the salt spread out to melt ice and snow.

A blend of PC and ABS, the Bayblend is used in the shells of the mirrors, manufactured in Reitter & Schefenacker. It has been chosen by their mechanical properties, the thin wall thicknesses that permit and its good aptitude for painting. This same material is also involved in many visible pieces sporty and luxurious dashboard inside. Intense heating, for example in direct sunlight, causes minimal deformation, so that separation between the parts are not appreciated.

Imagen

A retardant to seats

Great Lakes has launched Reofos NPH, a phosphate ester exempt halogen with good fire-retardant properties and favorable relationship precio-prestaciones with excellent physical properties and "low fogging", meets the criteria of proof MVSS 302. Reofos NPH is a liquid of low viscosity at temperatures above 0ºc happens to solid state and mixes easily with polyolefins and TDI to form well structured foams that do not fade nor requema easily. Foams have excellent physical properties with good hardness and especially reduced deformation by compression. Reofos NPH is particularly suitable for application in polyurethane molded in hot car seats.

Plexiglas in the car

Million cars are on the streets with rear drivers, covered with speedometer and intermittent of masses of Plexiglas moulding of the business area of Röhm copolymer of Degussa AG. In addition to its high resistance to weathering, this material is primarily characterized by their good properties of passage of light and the variability in the tinted, high brightness and transparency, as well as its hardness and resistance to the grated.

In addition to the already known of the masses of moulding Plexiglas applications these products are used increasingly in light management systems and in non-transparent parts for automobiles. As a driver of light in navigation systems, this material is used for its high purity and transparency, even in complex and highly branched forms. As an example of Plexiglas injection-molded body parts include the lining of the amounts in the Mini, the spoiler of the MCC Smart and the cover of the new Opel Astra outside rearview mirror. The light weight, high resistance to scratching, excellent resistance to weathering and colour stability as well as its easy workability are the determining factors for the increasingly greater use of these masses of moulding in the automotive manufacturing.

In addition, with the PFM system, the automotive industry also has a procedure that can be manufactured in parts of body in a single step of work: thanks to the extrusion multilayer sheets with these masses of moulding as color and final layer and subsequent injection layer obtained parts of body of high quality to manufacture lightweight, fuel-efficient cars.

Pagani in Modena/Italy made one of the fastest vehicles on the road: the Zonda, a sports of pure-bred with 7 litres and 550 horsepower engine. Rigid cellular plastics of polimetacrilimida Rohacell (Röhm Plexiglas of Degussa AG) as a material for manufacturing is used in the structure of the soil.

The structure of the soil of the Zonda, which supports a large weight, is manufactured as a single piece structure in surface layers of carbon fibre sandwich. The focus of the design was the reduction of the weight of the structure, maintaining at the same time an optimal behaviour in the event of collision. For this reason Pagani decided to use Rohacell as core material for the structure of the soil.

Under the hood

In the development of parts for the area of the engine of a car manufacturers often take into account factors such as the reduction of weight by the replacement of the metal and the costs, which can be downloaded to improve the production process. These two objectives can be achieved using plastics of high-performance, such as PPS, FLL or LCP. Obligations are resistance to oil, fuel or brake fluid and must be able to withstand temperatures of more than 160 ° C.

An interesting example is the case for a valve to the Ford Sigma. After stepping on the accelerator pedal, this piece regulates the adequate amount which must reach the engine. Taking advantage of the Fortron PPS 1140 L4 British manufacturer Visteon is producing this piece which has managed to reduce the weight and cost, as well as Assembly time.

The growing number of cars with Diesel engine and the tendency to temperatures high under the bonnet also require much materials. BMW incorporates a new device for the supply of fuel based on the POM Hostaform C 13031 XF 50/5339 in their engines. Its size is approximately 300 mm x 120 mm, with a weight of 350 g, is located in the tank and regulates the supply of fuel.

Connectors in electrical injectors

The Austrian company Hirschmann produces high performance connectors in a modern plant of injection, mainly with Ferromatik injectors. A few years ago the aforementioned transformer tested the electrical injectors and could demonstrate its clear advantage from the point of view of energy efficiency. In addition, the repetividad of accuracy also convinced to this company, in addition to other advantages of the fully-electric injectors.

Related Companies or Entities

Röhm Ibérica, S.A.

Suscríbase a nuestra Newsletter - Ver ejemplo

Contraseña

Select all

Autorizo el envío de newsletters y avisos informativos personalizados de interempresas.net

Autorizo el envío de comunicaciones de terceros vía interempresas.net

He leído y acepto el Legal notice y la Política de Protección de Datos

Responsable: Interempresas Media, S.L.U. Purpose: Suscripción a nuestra(s) newsletter(s). Gestión de cuenta de usuario. Envío de emails relacionados con la misma o relativos a intereses similares o asociados.Conservación: mientras dure la relación con Ud., o mientras sea necesario para llevar a cabo las finalidades especificadasCesión: Los datos pueden cederse a otras group companies por motivos de gestión interna.Rights: Acceso, rectificación, oposición, supresión, portabilidad, limitación del tratatamiento y decisiones automatizadas: contact our DPD. Si considera que el tratamiento no se ajusta a la normativa vigente, puede presentar reclamación ante la AEPD. Más información: Política de Protección de Datos

REVISTAS

VÍDEOS DESTACADOS

  • VOLLMER VHybrid 260

    VOLLMER VHybrid 260

TOP PRODUCTS

NEWSLETTERS

  • Newsletter Metal

    04/07/2024

  • Newsletter Metal

    02/07/2024

Highlighted links

Easyfairs Iberia - MetalMadridNebext - Next Business Exhibitions, S.L. - Advanced Machine ToolsAspromec - Asociación de profesionales para la competitividad del mecanizadoAMB24

ÚLTIMAS NOTICIAS

Featured companies

OPINIÓN

OTRAS SECCIONES

Services