The demand for the hottest high-performance plasti

The demand for high-performance plastics is increasing, and the weight of the engine is reduced.

-- review of the CPRJ Automotive Plastics Technology Forum

at present, there are many new applications of high-performance plastics around the automotive engine, especially the innovative solutions related to the intake manifold. Many suppliers in the automotive industry focus on the development of this aspect

according to Shen Jing, Senior Product Engineer of mahumer (Shanghai) R & D center, the current development trend of engines is miniaturization and integration, while meeting more stringent emission standards. This trend has also promoted the optimization of the intake manifold, making the intake air more efficient, the sealing design more sophisticated, and the use of plastics has also increased

Liu Zehua, key account sales (Automotive Industry) of imans (Suzhou) Engineering Plastics Co., Ltd., also said that small displacement engines need more compact turbocharging technology, and the temperature of the entire engine compartment has increased, increasing the demand for high heat-resistant materials. Replacing metal with high heat-resistant nylon can bring benefits of weight reduction and cost reduction. The application case of the company's injection molded high heat-resistant nylon shows that in the hot end turbocharger and the intercooler, the weight can be reduced by about 39%, the cost can be reduced by about 27%, the weight can be reduced by about 23%, and the cost can be reduced by about 17%

integrated component structure possible

Shi Rongbo, head of the non-metallic materials department of Chery Automobile Co., Ltd., pointed out that plastics can play a great role in improving the performance of the engine itself, air intake system, cooling system and fuel system. He explained that the performance of plastics has developed better and lighter, and the demand for high-performance and lightweight engineering plastics and composites will increase. As long as automobile and parts manufacturers can make good use of the advantages of individual materials, it is not difficult to give further play to the advantages of plastics in the automotive industry

for example, one of the advantages of plastic is that it has a high degree of freedom in design, can achieve an integrated component structure, reduce the number of parts, so as to shorten the processing cycle, reduce the later assembly process, and reduce costs. Taking thermoplastic elastomer as the material, the soft and hard segments are combined into one blow molding to realize the integration of components, which will be the development direction of air inlet hose in the future

in addition, affected by the regulations on recycling and banned substances, traditional rubber will be more replaced by thermoplastic elastomer materials; The use of environmentally friendly, recyclable and biological materials will also increase

in fact, the application of plastics has reduced the weight of cars a lot. Take the weight reduction of the glass guide of sanduping thermoplastic vulcanized elastomer (TPV) of ExxonMobil as an example. According to the company's data, without changing the vehicle design, it is limited to material conversion, from EPDM to sanduping TPV, removing glass and metal, and making the length of the profile equal. For comparison, the TPV system can achieve a weight reduction of 29% (0.303 kg) for the rear door

an example of using plastic instead of metal skeleton to provide additional weight reduction effect is 1. Until the conditioning is suitable, TPV is used to replace the metal material in the separator strip. In this application, TPV removes 2/3 of the metal skeleton, which can reduce the weight of parts by up to 48% (0.144 kg), and the corner strength after injection molding is greater with TPV

China still relies on imported materials

EDI Degasperi, general manager of landiqi engineering plastics (Suzhou) Co., Ltd., focused on the development trend of engineering plastic polyamide applied to the surrounding of automobile engines. He pointed out that the global demand for polyamide continued to grow. In 2012, the largest markets were Europe (34%), China (28%), Asia (19%) and the Americas (19%), and China's demand growth rate would be very considerable

as for the corresponding relationship between global energy consumption and material mechanical properties, compared with PP, LDPE, HDPE, PC, and other materials, nylon 6 and nylon 66 show the best performance

at present, the materials used in the vicinity of automotive engines in China mainly rely on foreign imports. Huang Yingming, the Engineer in charge of the Automotive Engineering Research Institute of Guangzhou Automotive Group Co., Ltd., said that GAC has no special restrictions on the selection of materials, and only imported materials are used. As long as the materials meet the production standards, there are opportunities to adopt them

however, Rong Bo, who has a history of 80 ⑵ 50Hz and a short test time, stressed that although the quality of domestic materials has been greatly improved, there is still a gap with foreign high-end materials, mainly due to the lack of stability of quality. He added that in addition to research and development, domestic material enterprises must also strengthen service quality. After all, in the procurement process, perfect and reliable customer service also plays a very important role

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