At the just-concluded scene of the 2011 Shanghai Auto Show, many tire companies Michelin, Hankook, Nexans, Bridgestone, and Yokohama at home and abroad attended the exhibition in front of the field. There are few precedents. Tire companies got together at this exhibition. In addition to their respective achievements in the Chinese auto market in 2010, they also hoped to use the auto show as a unique platform to push their tire products containing the latest environmental protection technologies to the exhibition more directly. And in front of car manufacturers, thereby further expanding market share. Then, what is the meaning of the term “environmentally-friendly tires,†which is often mentioned in the past, and where does it reflect the improvement of automotive technology? All companies launch green tires across the board Yokohama Rubber, which manufactures the Yokohama brand, introduced two types of tires using the orange oil formula during the auto show. Its concept is to extract raw materials from the orange peel and synthesize the formula with natural rubber to produce tire products. Dunlop, an overseas brand that does not have much publicity in China, has also released a fuel-saving and environmentally friendly tire to Chinese customers for the first time. The company stated that its tires use ENR (Revolutionary Natural Rubber) technology and use 97% of non-petroleum natural resources, greatly reducing CO2 (carbon dioxide) emissions from manufacturing, use, and disposal. The listing of Hankook's luxury comfort mute tire Wantu Shi H432 has also attracted the attention of the industry. It is also known as the "top product" inside Hankook Tire, designed specifically for luxury premium cars, introducing the "Kontrol" technology concept. The company pointed out that its drainage performance and braking force, handling performance will be better (4% higher than ordinary tires), the product can reduce wear and fuel consumption, thereby protecting the environment. For Hankook, manufacturing a high-grade green tire is actually part of the company's environmental tire strategy. Its "Ying Fu Ran" environmental tires also went public last year. An insider of the company pointed out that after a large number of new technologies such as structural design, manufacturing equipment, and silicon-containing technologies are used, “Ying Fu Ran†can reduce tire rolling resistance and increase fuel efficiency. The test results show that “Ying Fu Ran†can save 3% to 6% of fuel consumption, extend tire life by 23%, and save 60 to 120 liters of fuel consumption in one year. “Regardless of what kind of environmental protection tires concepts are launched by various companies, in fact, the definition of environmental protection tires within the industry is relatively clear.†Ren Fujun, head of technical rubber car at Zhongce, told the reporter of “First Financial Dailyâ€, “In accordance with the initial industry for green , Eco-friendly tires, green tires may need to meet the requirements of low rolling resistance." In fact, reducing rolling resistance is not a new technology. As early as 1946, French Michelin company invented radial tires (these tires are now all over the car). The Meridian tires have improved the performance of the tire in many ways, including reducing rolling resistance, because once the rolling resistance is reduced, it will contribute to the decline in fuel consumption. Ren Fujun told reporters that there are several ways to reduce rolling resistance. The first is to reduce the weight of tires and wheels. This is a matter that many tire component companies are doing. The concept of "lightweight" has been used in the use of materials for many automotive bodies. For example, Audi has advocated the use of aluminum body, which can reduce the weight of the steel plate body by 40%. BASF and other chemical companies are also directing their engineering plastics products to the market to replace other components. One approach to “lightweight tire†is to use a resin film with poor air permeability as the inner liner of the tire, and add nitrogen gas at a temperature of 140 degrees Celsius to the tire in the metal mold for vulcanization. But Ren Fujun also pointed out that for a tire, it is not possible to reduce its weight blindly, or to have a certain volume. Previously, the internal technical level of a tire company also told this newspaper that since the tire is the only product that the car directly touches the ground, if its weight is too light, it is also not conducive to driving the car. Therefore, when choosing a car, it is necessary to do a more detailed investigation on the tire model in the same type of car. If the weight of the car body itself is similar, the type of the tire equipped with the larger one may be a good thing. How to reduce rolling resistance "One way to reduce rolling resistance is to change the formula for tire products." Ren Fujun said that before the industry did not have this kind of thinking, often see some long-distance car drivers will directly use the watering method to cool the car tires. , "Because your tires get hotter, they may consume more fuel. And more tire companies are also embarking on changes in tire formulations that will make tires lose heat." More than a decade ago, Michelin introduced green tires that incorporated silicone raw materials into the tire tread. “Silicon can help reduce tires without sacrificing tire grip (especially on wet surfaces) and abrasion resistance. Rolling resistance," said an insider from Michelin. Goodyear has also developed a new type of green tire that replaces traditional carbon black and silicone (traditional tire fillers) with natural bio-tire fillers. The stuffing of this organism is mainly made of corn starch. In the eyes of Ren Fujun, the formula that lowers the rolling resistance of tires, which is currently recognized by the market, is called solution-polymerized styrene-butadiene-styrene (SBR) and white carbon black. It is mainly used on tire treads and sidewalls. For example, a tire tread of a car uses more than 60% of butylbenzene, which can reduce oil consumption by about 200 liters when it travels between 70,000 and 80,000 kilometers. A LANXESS company management also told reporters that the company is adjusting its production process at its Orange plant in Texas, USA, to promote the production of dissolved styrene-butadiene rubber. “Soluble butylbenzene can reduce rolling resistance while Improve wetland adhesion." However, the technology of polybutylene butadiene styrene still lags behind in the domestic market. “The companies with strong research and development capabilities in this area are all in Japan. Companies such as Michelin and Goodyear have their own synthetic rubber plants, and their solute-polymerized butadiene-styrene technology. What kind of stage it has developed to is not available to the outside world. So in the future, China and foreign chemical companies may need to strengthen this part of their R&D capabilities." In the "Guidance Catalogue for Industrial Structure Adjustment in 2011" issued by the National Development and Reform Commission recently, 30,000 tons/year and above of polybutadiene-butadiene rubber and low polyaromatic content filled butadiene styrene rubber production equipment, chemical modification of synthetic rubber Both development and application are included in the category of encouragement. "Environmentally friendly tires" expand Of course, to define the concept of environmental protection tires, today is not just to stay in the "reduce the rolling resistance." The aforementioned management of LANXESS stated that the European Union had passed a new regulation (EC1222/2009) more than a year ago, which stipulated that all new tires sold in the European region must be used to indicate fuel efficiency before November 2012. , wetland adhesion and external rolling noise labels. The purpose of this regulation is to reduce carbon dioxide emissions and noise by promoting safe green tyres. In addition, these labels will provide consumers with greater consumer transparency and help them make purchasing decisions. “At present, Japanese tire manufacturers have introduced tire marking measures in early 2010, and the United States is also assessing similar regulations.†The management of LANXESS said. Ren Fujun said that the introduction of the above-mentioned regulations also means that in addition to fuel efficiency, environmental protection tires must also improve their wetland adhesion and external rolling noise (ie, quiet) technology. TUV SÃœD asserts that this regulation has standardized the three major properties of tires: fuel economy (ie, tire rolling resistance requirements), which is divided into 7 grades from A to G; wet grip grade, divided into A To F total of 6 levels; road noise level, according to the provisions of the test noise value is divided into 3 levels: N ≤ LV-3, LV-3LV, and with a black label to indicate. In addition, as the laws and regulations itself is more to force manufacturers to label their products with end users in accordance with the unified specifications, which makes the price advantage of domestic manufacturers have diminished. Ge Guorong, deputy general manager of Chinagce Rubber, told reporters that in order to reduce tire noise, that is, to mute, it is necessary to conduct in-depth research on the performance of tires, such as the pattern design of tires. Some experts have explained that when the air flow in the tire tread gap and the air turbulence around the tire, it will constitute the air noise; and part of the carcass and the vibration of the pattern can also increase the tire vibration noise. Bridgestone and Hankook Tire have also made breakthroughs in tire noise reduction technologies in recent years. They have adopted a reasonable pitch design to disperse the noise between blocks when driving. Hankook Tire also performed some smooth transitions on the main groove position of some tires, which can further achieve the effect of silence. Goodyear's tires use a closed shoulder design that hopes to stop the propagation of some sound waves and reduce the level of external and internal perceived noise. A person at Goodyear also stated that, unlike most tyres with an asymmetric tread pattern, the company’s tread block has a certain degree of inclination, which makes the tire touch the floor softer, thus preventing the resonant propagation of audio; tires The close connection between the face blocks also avoids the noise caused by the uneven wear of the tread after long-term wear. However, an insider of the tire industry also pointed out that the production of environmentally friendly tires will definitely increase the overall cost of R&D. Therefore, high-price tires perform better in terms of noise reduction. If the noise reduction performance of ordinary tires is to be improved, more technical support may be needed. In addition to changes in tire performance, environmental issues in the tire manufacturing process can not be ignored. Yokohama Rubber Company pointed out that at present, the company strives to reduce carbon dioxide emissions in the selection of raw materials and production processes, and promotes the goal of “making landfill disposal volume zero†at domestic and foreign production bases. Maggie also said that the company's flagship green tire Waltz's raw materials, strictly control the proportion of petroleum products, so that carbon dioxide emissions in the tire manufacturing process dropped significantly. Climbing Line,Dip Insertion Line,Pcb Insertion Line,Pcb Insertion Line Machine Foshan Heiteng Intelligent Technology Co., Ltd , https://www.heitengproductionline.com