The hottest low-carbon road for the automotive ind

The future low-carbon road of engineering plastics automobile industry

Copenhagen climate conference is becoming the starting point of low-carbon automobile industry. Low carbon economy has become one of the hot topics in front of and behind the stage. At the recently concluded Guangzhou auto show, almost every exhibitor has taken measures to varying degrees in terms of low carbon, energy conservation and emission reduction, according to the relevant staff of the organizer. More than 60% of the auto companies involved in the development planning of new energy vehicles in their corporate strategies. In addition to seeking new energy, the application of engineering plastics in the automotive industry is also the general trend and the aspiration of the people

automotive plastics have been used for a long time.

the characteristics of plastics are light weight, non rusting, good impact resistance, high transparency and wear resistance, good insulation, low thermal conductivity, good general formability and coloring, low processing cost, etc. the use of a large amount of plastics in automotive design can comprehensively reflect the requirements for automotive design performance, namely, lightweight, safety, corrosion prevention, modeling and comfort, And it is conducive to reducing costs and saving material resources. However, due to the poor dimensional stability, high thermal expansion rate, easy combustion and aging of ordinary plastics, many properties cannot be compared with metal materials. Therefore, the plastic used in cars is not a pure (single) variety, but modified, also known as "modified plastic"

in order to meet the needs of the development of the automotive industry, the variety and application range of automotive plastics continue to expand. In the 1990s, the average plastic consumption of automobiles in developed countries was 100 ~ 130kg/vehicle, accounting for 7 ~ 10% of the curb weight of the whole vehicle; By 2002, the average plastic consumption of automobiles in developed countries reached more than 300kg/vehicle, accounting for 20% of the curb weight of the whole vehicle. It is estimated that by 2020, the average plastic consumption of automobiles in developed countries will reach more than 500kg/vehicle

the plastic consumption of each car of China's economic cars is 50 ~ 60kg; The plastic consumption of light and medium-sized trucks is only 40 ~ 50kg; Heavy duty trucks can reach about 80kg. China's medium and high-end cars are basically imported from developed countries, and the application of automotive plastics is basically equivalent to the level of developed countries in the 1990s, with 100 ~ 130kg/vehicle

plastics are widely used in automobiles. According to their functional applications, they are mainly divided into three categories: interior parts, exterior parts, and functional structural parts

exterior parts: replace steel with plastic, increase the application of plastic products, reduce the weight of cars, and achieve the purpose of energy saving. Such as bumper, etc

interior parts: with the application characteristics of safety, environmental protection and comfort, the instrument panel, seat, headrest and other products are made of elastomer and foamed plastic that can absorb impact energy and vibration energy, so as to reduce the injury to human body during collision and improve the safety factor of the car

functional structural parts: high strength engineering plastics are mostly used to reduce weight, cost and process. Such as plastic fuel tank, some parts on engine and chassis, etc

China's engineering plastics rise against the trend

recently, China's auto market has been booming against the weak global auto market. As one of the top ten industrial revitalization plans, the auto industry, driven by the favorable factors of going to the countryside and the detailed rules of the auto industry revitalization plan, has seen its sales rise steadily, even far exceeding the sales of the same period last year that was not affected by the economic crisis. However, the weakness of the global auto market cannot be ignored. The decline in auto demand led to the decline of Japan's exports to the United States for the 18th consecutive month, with a decline of 58% to 556.5 billion yen. Japan's exports to the European Union also fell for the seventh consecutive month, with exports to the European Union falling by 55% to 491.3 billion yen. Four ball friction tester: the friction pair is composed of four steel balls. Japan's export to China fell sharply by 40% to 61.8 billion yen, as the demand for automobiles, plastics, semiconductors and other electronic components in the Chinese market fell sharply

in January 2009, craaytech, a supplier of automotive plastic parts, declared bankruptcy, becoming another victim of the downturn in the North American automotive market. Less than two months later, in March 2009, Plastal, a major supplier of automotive plastic parts in Europe, declared bankruptcy. Naturally, the reason is also due to the sharp decline in demand in the automotive industry. Plastal is one of the major suppliers of automotive plastic parts in Europe, with sales of 1.3 billion euros in 2008. When people sigh, they can't help thinking about how to get plastic parts out of the cold winter

on the one hand, the application of plastic parts in cars can effectively reduce the weight of the car body and realize the lightweight of the car, so as to save fuel, which is one of the important ways for cars to achieve energy conservation and emission reduction. Plastic itself is recyclable, so the recycling of auto parts is a top priority for the sustainable development of the auto plastic industry, which is of great significance in saving energy, promoting environmental protection and accelerating harmonious development. As recyclable parts, automotive plastic parts are a necessary factor to realize the sustainable development of the automotive industry. Nowadays, the research and development of the recyclability of automotive plastic parts has been highly valued by automobile manufacturers all over the world. Therefore, if you want to survive in the weak global automobile market, it is important to know the size range of samples, and the research and development of plastic parts in recyclability is essential. On the other hand, it is the R & D and application of new automotive plastics products. For example, Toyota Motor is full of expectations for bioplastics, saying that 20% (mass ratio) of the plastics used in cars will be replaced by bioplastics by 2015. In order to achieve the replacement ratio proposed above, it is also necessary to achieve technological breakthroughs in the heat resistance, formability, impact resistance and long-term reliability of bioplastics. Toyota has begun to promote the improvement research of the above topics. At present, the proportion of various plastics used in automobiles is: polypropylene (PP) is less than 50%, and the main materials such as polyvinyl chloride (PVC), polyurethane (PU) and ABS resin account for about 80%. Toyota plans to gradually replace these plastics with bioplastics by 2015. The first thing to replace with bioplastics is the "built-in parts" inside the car

in European and American countries, 30% - 40% of the consumption of engineering plastics is concentrated in the automotive field; In the consumption proportion of China's engineering plastics market, the consumption of automobiles has accounted for 11.82%, followed by electronics and Electrics (its consumption proportion is 30.4%). Therefore, industry analysts said that with the rapid demand for plastics in the automotive industry in recent years, China's plastic industry and the automotive industry have formed a trend of "both prosperity and loss". As various types of plastics are widely used in car bodies, interiors, bumpers and even engines, the domestic plastic industry will also be accompanied by the stimulus policies of the automotive industry. Whether the domestic plastic industry can usher in a new peak of development is worth looking forward to

the central economic work conference in early December 2009 released a signal that the Chinese government will continue the preferential policy of sending cars to the countryside in 2010 and intensify efforts to promote it nationwide. As of November, 2009, China's automobile sales benefited from the strong support of relevant policies, breaking through the sales mark of 12million vehicles, setting a new record in history, and China's automobile plastics also benefited a lot. In 2010, under the condition of the policy of going to the countryside for automobiles or increasing, can China's automobile plastics achieve brilliance

note: the reprinted contents are indicated with the source. The reprint is for the purpose of transmitting more information after the new material industry development system is basically completed, and does not mean to agree with its views or confirm the authenticity of its contents