automotive plastic parts, i.e., an automobile accessories made of plastic. Plastic parts used widely in automotive, body and interior parts of which are common to most interior parts again.
1. Features automotive plastic parts
1, automotive plastic parts advantages
(1) Light weight
Polymer one of the most prominent automotive lightweight material having a characteristic that is the advantage of high strength. Since the average proportion of various plastics are generally only 15-20 percentage of ordinary steel, but also lighter than the average wood. This feature is particularly prominent advantages of high-grade large car, you can subtract a lot of weight.
(2) excellent overall physical and chemical properties
Another advantage of the polymer material having a plurality of automobile functions, may be used for special occasions. Plastic with good insulating properties, excellent corrosion resistance, aging resistance, good wear and abrasion resistance, good water resistance and mechanical properties, excellent adhesive bonding performance, are processed into various processed into various various kinds of performance and functionality requirements of carExterior parts.
(3) excellent decorative effect
The most prominent advantage is that a polymer material cars excellent decorative effect. It can be processed into a product having a complicated shape and a variety of colors, and sometimes need printing, foil, cotton, multi-layer, colored, processed into a very realistic image, patterns and designs, can imitate natural wood, metals, animal skin texture, the surface may also be hot stamping, foil, silver, and the like mosaic.
(4) good processability
Because of good bonding properties between the thermoplastic polymer compatible with automobile materials and with other materials, may utilize different material components, means of forming a variety of modern processing machinery, by extrusion, injection molding, rolling, molding, blow molding or the like is processed into polymer materials having various shapes cars, different performance, different colors, different functions, such as directly extruded pipe, profiles, sheet injection molding into various articles, calendered into a film and the like, may also be made of a variety of colors as desired, have laminated, hollow, inserts and other discharge products, may also be requested secondary processing, such as mechanical like article turning, punching, cutting, welding, can also be hot melt, cold saw, compound and the like.
2 deficiency
(1) poor heat resistance:
is the difference between the high temperature performance cars Another major disadvantage polymer material . Most automotive thermoplastic polymer material in the operating temperature of 80 degrees Celsius or less, often above the thermal deformation temperature, the polymer material can not maintain its original shape and configuration, performance can vary greatly.
(2) the difference in rigidity:
Polymer building material having good plasticity, but it less rigid, it can not be used requires a greater bearing capacity as the main place or force structure member, otherwise they will be damaged due to insufficient rigidity of instability; in addition, its resistance to deformation is not naturally occurring material such as a conventional material processing.
(3) having combustibility:
compared to steel, plastic Another disadvantage is that having combustibility. Plastic can be divided into two categories, one is non-combustible, the other is combustible. However, since the plastic formulation having a combination of features and modified, combustible plastic by addition of a flame retardant in the formulation nonflammable andBurning filling modified, its modified to make it a non-combustible or flame-retardant plastic, let them ease of use.
(4) frost resistance difference:
Many plastics have cold brittleness, mainly when the plastic parts used in the winter, particularly impact force prone to impact damage, so for this reason many plastics has been limited in application of low-temperature environment. This drawback is currently thermoplastics can be modified by the addition of other materials or additives in the raw material composition formula, it’s low temperature impact strength is improved. .
A common type automotive plastic parts 2
common type of plastic automotive uploaded by the site of use of view, are the following:
1, polycarbonate, glass fiber reinforced polycarbonate
lamps, meter signs, visor, glazing, bumpers and the like;
2, reactive injection molding polyurethane (the RIM)
bumper, radiator grille, spoiler, fender and the like;
3, low density polyethylene, high density polyethylene, ultrahigh molecular weight polyethylene
fenders, roof and doors damping material, trunk mat, air ducts, fuel tanks and the like;
4, polyvinyl chloride, chlorinated polyvinyl chloride, glass fiber reinforced polyvinyl chloride, polyvinyl acetate, thermosetting low foaming dilute
dashboard cover, vehicle roof lining, the skin covers, spare tire cover, a steering wheel, bumper cover, wire Coating the like;
5, polypropylene, fiberglassReinforced polypropylene, an inorganic filler reinforced polypropylene, electroplating grade polypropylene
heating and ventilation system, cabin, engine compartment, the vehicle body, a lamp housing, toolbox, wire terminals, terminal box cover, muffler and the like;
6, high impact ABS, ABS super high impact, high rigidity ABS, ABS plating, transparent ABS, the ABS blend chloride
fender, instrument panel, the cover radio , air exhaust duct, the steering wheel horn cover, the grid, the shield, the ventilation cover, wheel covers, shutters, brackets, frames and the like;