HC Plastics News: In recent years, car companies have made great progress in hybrid systems, fuel cell vehicles, engine technology, lightweight body and so on. Among them, car lightweight is the most preferred area for car companies. As a material that can achieve both lightweight and cost reduction, the modified material has always been the material of choice for many car companies in lightweight exploration.
The light-weighted tailgate of the car enterprise
With the advancement of lightweight vehicles, various weight-reduction “routers†have emerged one after another. Not only modified plastics are used in interiors, doors, front seats, seats, etc., but also in the automotive fuel tanks, bumpers and car tailgates.
Taking the tailgate of the automobile as an example, the material of the tailgate of the automobile has been developed from the traditional steel tailgate----the composite tailgate----the full plastic tailgate.
After research, mature production models using plastic tailgate modules include: Renault Espace4, Nissan Nissan Novel, Changan Peugeot Citroen DS6, Citroen C4 Picasso, Peugeot 308S (reference model), Jaguar Land Rover Aurora, Volvo XC60 and other models.
It is not difficult to see that plastic tailgate technology has been widely used in foreign and joint-venture brand cars. This year, Chinese automaker Chery recently launched the latest eQ1 electric car, because its internal structure of the tailgate is from Saudi Basic Industries Corporation ( SABIC)'s polyolefin material achieves 40% weight reduction!
Car plastic can achieve tail door weight loss 1.3~5KG
The implementation of Euro 6 emissions in 2014, as well as the 2020 carbon emissions target and even the 2050 carbon emission target is a hurdle in front of major OEMs.
In order to meet the relevant standards, the mainframe factories and their suppliers continue to explore and develop the third generation tailgate----the plastic tailgate.
The inner panel of the all-plastic tailgate uses long glass fiber reinforced PP (LGF+PP), the outer panel and spoiler use PP or TPO, the parts are all formed by injection molding process, and then assembled by using the glue coating process.
Long glass fiber reinforced PP and SMC materials, the stiffness modulus is not too different (depending on the proportion of different glass fiber, the effect will be very different, there are some low-component glass fiber reinforced PP parts are still sensory or "soft" ), but the density is smaller than SMC. Generally, the density of SMC materials for tailgates is about 1.8, while the density of PP+LGF for the same proportion of glass fiber is generally around 1.5, which is about 1.3kg. +LGF material additive is used in a small amount, which has an advantage in VOC detection; the injection molding process is more efficient than the molding process. To sum up, the use of modified plastic as the tailgate material not only has a good weight reduction effect, but also can save production costs.
The history of the material company's research and development of the plastic tailgate
The first model to use this all-plastic plastic tailgate was the Renault New Clio in 2012. The inner panel is LGF-PP, the outer panel is PP, and the spoiler is ABS. At the pre-research stage, Renault set the next drop. A goal that weighs 10% and is easy to recycle. In order to achieve this goal, material supplier Styron (now renamed Trinseo) and Renault worked together for two years, and finally developed a full-plastic tailgate that can be mass-produced. The inner and outer plates and spoilers are made of Trinseo.
In 2013, the tailgate supplier Pieu developed its first all-plastic tailgate, Peugeot's new 308 tailgate, inner panel LGF+PP, outer panel and spoiler PP, and the material supplier was SABIC.
At the 2013 Frankfurt Motor Show, Nissan unveiled its third-generation X-trail, which is equipped with the all-plastic tailgate developed by Magna.
In 2014, the BMW i3 used the all-plastic tailgate developed by Magna.
From the current situation, it is certain that the plastic tailgate will become more and more popular in the future. SUVs and MPV models, hybrid and electric vehicles all have a lightweight way to reduce fuel consumption, emissions or enhance endurance. Therefore, more and more car companies will try to do this!
With the increasing emphasis on car lightweighting, the prospects for automotive plastics will become clearer. Material companies have come to the era of strength in the automotive field. Many domestic materials companies have been widely used in automobiles. In the near future: more companies will join the competition, and more cars will be used in domestic production. Modified plastic. 
Editor in charge: Wang Ning 12
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