The lightweight of the hottest car has become the

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Automotive lightweight has become the focus of attention in the material industry

at the 2018 China new materials industry innovation and development forum held recently, experts, scholars and enterprise representatives at home and abroad gathered together. The production of floating fiber is due to the insufficient infiltration of resin into GF. Focusing on new automotive materials, we discussed the product development and market prospects of automotive lightweight materials. "At present, China is in the golden age of the development of new energy vehicles. Automobile enterprises and material enterprises should work together to develop and apply lightweight and high-performance synthetic materials, so as to improve the research and development level of new automotive materials and the completeness of the industrial chain." Many experts said at the meeting

vehicle lightweight refers to improving vehicle safety, crashworthiness, comfort and other driving performance while reducing vehicle weight. According to industry statistics, if the vehicle weight is reduced by 10%, it can save fuel by 6% - 8%, reduce fuel consumption by 0.3-0.6 liters per 100 kilometers, and reduce carbon monoxide emissions by 5-8 grams. For the sake of environmental protection and energy conservation, automobile lightweight has become the trend of automobile development in the world. Automobile lightweight technology mainly involves three aspects: overall structural design, materials and processes. Based on advanced materials and processes for vehicles, it naturally becomes the top priority of lightweight technology

"Automotive Lightweight synthetic materials are our current research hotspot." Zhuang Yi, director of the materials department of the Ministry of science and technology of Sinopec, introduced the company's current R & D and production of lightweight materials from the perspective of suppliers. Facing the demand for new materials for vehicles in a variety of categories, Sinopec, in combination with its own chemical foundation, proposed an integrated supply plan for new chemical materials for four categories and a variety of products, including engineering plastics, high-end polyolefins, high-performance rubber and high-performance fibers

"according to Arney's data, by 2020, the consumption of polymer materials in automobiles will exceed 25%, while the consumption of polymer materials in domestic automobiles still has a lot of room to rise." Zhuang Yi pointed out that Sinopec not only provides new chemical materials for vehicle enterprises, but also plans to seize the technological highland of new materials for vehicles. Therefore, it has focused on the research and development and technology accumulation of special new materials and preparation processes for vehicles. The company has set up a lightweight material research and development platform - Sinopec automobile lightweight non-metallic material innovation center, which is dedicated to the special research and development of vehicle enterprise specific and professional products. According to him, the major scientific and technological projects implemented by the center, including 15 new products and 10 special material polymerization processes, are progressing steadily. The three-year output is expected to be 260000 tons, and the future output is expected to reach one million tons

as a representative of automobile enterprises, Dr. Yang Tianbo from the R & D Institute of general tortuosity modulus of FAW Group Co., Ltd. introduced the current material needs of automobile enterprises: "we focus on the application of new automotive materials on lightweight and high performance. Carbon fiber composites can become a" new material star "because of their good properties. Their application in automobiles can not only realize lightweight, but also improve high temperature resistance, corrosion resistance Mechanical properties such as fatigue resistance and strong stability

it is understood that the application rate of lightweight new materials by car companies is also steadily increasing. For example, the "irezer 7" carbon fiber hybrid, jointly built by the Ningbo Institute of materials technology and engineering of the Chinese Academy of Sciences and Chery Automobile, not only needs to fundamentally transform the plastic granulator process, but also reduces the body weight by 40% - 60% through the use of carbon fiber composites; The door, top cover, machine cover and other components of the "future K50" launched by Great Wall Motors are made of carbon fiber assemblies

"at present, there is still a certain gap between China's automobile manufacturing industry in the core technology field of materials and the international advanced level, while the cost of carbon fiber, aluminum alloy and other fiber reinforced materials is too high, and a complete industrial chain has not been formed." By comparing with the world's advanced level, Yang Tianbo believes that there are two obvious defects in China's current automotive new materials: insufficient research and development level and incomplete industrial chain

Yang Tianbo's views have also been recognized by other experts. As a whole, the demand for quantitative materials such as carbon fiber materials, nylon materials and long glass fiber reinforced plastics has increased year by year. However, the current problems of new automotive materials are also obvious. On the one hand, the technical reserves of high-performance new materials are insufficient, on the other hand, the overall industrial chain is not complete, and the relevant standards and specifications also need to be further negotiated and formulated. "At present, it is time to carry out corresponding technical research on the product R & D, manufacturing, design and other links of new vehicle materials. Material enterprises and vehicle enterprises should work together to make the research objectives more clear, and the material R & D more grounded, so that more and more lightweight materials can reduce the weight of vehicles." Experts said

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