Environmental pollution caused by the application

2022-08-22
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Environmental pollution caused by the application of plastics in automobiles should be lightened. At present, the main direction of the development of automotive materials technology in the world is lightening and environmental protection. Reducing the weight of the vehicle itself is one of the most effective measures to reduce vehicle emissions and improve combustion efficiency. It is reported that the fuel consumption can be reduced by 6-8% for every 10% reduction in the dead weight of the vehicle Therefore, increasing the application of plastics in automobiles has become the key to reduce the cost and weight of the whole vehicle and increase the vehicle payload

in recent years, plastics have been increasingly used in automobiles. At present, the consumption of automotive plastics in Germany, the United States, Japan and other countries has reached 10 ~ 15, and some even reached more than 20. Judging from the materials used in modern cars, whether it is exterior trim, interior trim, or functional and structural parts, the shadow of plastic can be seen everywhere. With the continuous improvement of the hardness, strength and tensile properties of engineering plastics, plastic windows, doors, frames and even all plastic cars have gradually appeared, and the plasticization process of cars is accelerating

in addition to lightweight, the application of plastics in automobiles can reduce product costs to a certain extent. Relatively speaking, plastic molding is easy, which makes the processing of components with complex shapes very convenient. 2. Main technical specifications: save the debugging time of abrasive tools and processes, accelerate the commercialization process of products, and help reduce costs and increase efficiency. Celanese, a material manufacturer, said in an interview with Gaishi

energy conservation and environmental protection are the key applications of plastics. The promotion of lightweight is mainly aimed at promoting the process of energy conservation and emission reduction of vehicles and reducing the pollution to the external environment. However, the environmental pollution in cars caused by plastics should not be ignored

in recent years, diseases caused or induced by air pollution in cars have shown an obvious upward trend, and have become one of the biggest threats to modern mankind. According to guotuiheng, a professor of respiratory diseases at Beijing Chaoyang Hospital, volatile substances in the car, such as benzene and formaldehyde, will appear central nervous system anesthesia after people inhale them in a short time. Light people will have dizziness, headache, nausea, chest tightness, fatigue and blurred consciousness. How to choose the manhole cover pressure tester - performance, serious people can cause coma and death due to respiratory and circulatory failure. If long-term exposure to toluene and xylene with a certain solubility will cause chronic poisoning, and neurasthenia like symptoms such as headache, insomnia, listlessness, memory loss, etc. will appear

therefore, the research and development of low emission materials is particularly critical and urgent. In fact, some manufacturers of environmentally friendly raw materials have launched a series of solutions, such as Jinhu Rili's sukejing?, Compared with traditional interior plastic, the emission is reduced by more than 60; Celanese has also successfully developed a series of low emission, spray free materials for automotive interior and exterior trim parts, such as Hostaform? XAP2POM、Hostaform? Metalxtmpom, among which metalxtmpom without spraying, has excellent scratch resistance under the condition of ensuring the metallic luster and texture of the product, while reducing the investment of spraying/electroplating equipment, labor, etc., providing a simple and low-cost way for the manufacturing of automotive parts

it is reported that the state will introduce mandatory standards for air quality in cars in 2015, which puts forward higher requirements for vehicle manufacturers, parts suppliers and material manufacturers. In the future, more low emission material products will be launched, and cleaning the car will no longer be a slogan

in recent years, the application of plastics in automobiles in order to enhance the competitive advantage in the market, various automobile enterprises have developed and launched models with lightweight design, greatly improving the utilization rate of plastics. BMW's mass-produced bmwi3 pure electric vehicle in 2013, whose shell material is plastic and chassis material is aluminum alloy, has achieved a weight reduction of 250-350 kg compared with traditional similar models. This trend of weight reduction based on plastic strip steel is also popular among China's independent brands. For example, in cars and light vehicles, the plastic consumption of CA7220 xiaohongqi car is 88.33kg, that of Shanghai Santana is 67.2kg, that of Audi is 89.98kg, that of Fukang is 81.5kg, and that of Iveco 0041 is 144.5kg; Among heavy vehicles, Steyr 1491 is 82.25kg, and Steyr king is 120.5kg

the traditional concept of whether plastic cars are safe generally believes that the safety factor of light and thin products is low. However, Wang Zhiwen, the operation director of the Industrial Research Institute of the Chinese society of automotive engineers, pointed out in an interview that the heavier the car, the safer it is. Even if very light materials are used in cars, if high-strength processing technology is adopted, the effect of very light but very elastic can be achieved, so the more safe it is

in terms of strength, some engineering plastics are not inferior to metals, among which Polyoxymethylene (POM) is known as saigang. This product was invented by Celanese. It has the strength and hardness similar to metal (compared with pc/abs, its strength is higher than MPa), and has high fatigue resistance, impact resistance, corrosion resistance and elasticity. In addition, the product has good self lubrication and stability in a wide range of temperature and humidity. At present, it has been widely used in many automotive components, such as fuel system, bumper bracket, bearings and so on

in addition to body parts, as mentioned above, engineering plastics began to expand from small parts to large parts of the body. For example, in mainland Germany, 6165a6pps (polyphenylene sulfide) was incorporated into the imaging device parts in the new automobile windshield system as an automotive material to improve the driving safety factor. The company said that the safety performance of windshield is the key to measure the overall function of automobile. 6165a6pps is a polymer with strong mechanical properties. This reinforced engineering plastic mixed with 65 glass and mineral fiber can minimize the bending of materials and is an ideal vehicle plastic

it is not exaggerated or emphasized here how high the safety of plastic is. In fact, plastic can not replace metal for the time being in some safety parts. The above is more to guide the car country to increase the investment of enterprises and consumers in hardware equipment such as charging piles. It was learned in the previous visit that at present, some car enterprises admit and use plastic products in the research and development of new cars, but they are in the consideration of sales and safety during mass production, so they retreat. If the material passes the safety assessment standard, but it is not allowed to give full play to light and heat, it is indeed a pity

in general, the application of plastics in automobiles has developed from ordinary decorative parts to structural parts and functional parts; Automotive plastic materials are developing towards composites and plastic alloys with higher strength, better impact and ultra-high flow. However, there is still a long way to go for the promotion of all plastic vehicles in the future, not only safety issues, but also aging, recycling and other issues, which need to be further improved in technology

on the basis of similar metal hardness and strength, engineering plastics also have soft properties. Their elastic deformation characteristics can absorb a large amount of collision energy, have a large buffer effect on strong impact, and protect vehicles and passengers. Therefore, the plasticized dashboard and steering wheel are used in modern cars to enhance the cushioning effect. Plastic materials are used for front and rear bumpers and body trim strips to reduce the impact of objects outside the vehicle on the body

in addition, plastics can also absorb and attenuate vibration and noise. The application of plastics in automobiles can improve the comfort of riding. Wang Hongyan, a professor at the school of automobile of Tongji University, said that when designing the safety of the car body, he hoped to absorb some collision energy through structural deformation, which consumed work and increased the exhaust temperature. As long as the structure involved is reasonable and the manufacturing process is appropriate, the safety of the car body made of plastic should be better than that of the metal body

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