With the continuous emphasis on environmental protection, the automotive industry is also towards the 'lightweight' development. Plastic in addition to the widely used in the production of a variety of interior trim, it can now be used to replace part of the metal material, manufacturing certain structural parts, functional parts And outside the decorative pieces. This will not only meet the performance requirements of some special parts of the auto parts, but also meet the requirements of lightweight vehicles.
At present, the plastic material in the vehicle quality of the percentage of 8% to 15%. On the plastic field in the automotive application is no longer a new topic.
Automobile production and per capita share is also a substantial increase in the frequency of retirement and update naturally increase in recent years, the recycling of waste automotive plastics has aroused great attention from all over the world.
China's government departments have given a high degree of attention, as early as February 2006, the National Development and Reform Commission, Ministry of Science and Technology and the State Environmental Protection Administration jointly promulgated the "automotive product recycling technology policy" to guide and promote China's automotive product design, Scrap, recycling and recycling, etc. Plastic as an environmentally friendly material, because of its plasticity, light weight, high recycling efficiency, in the automotive industry is widely used, whether it is interior parts Ornaments, or functional structural parts, are increasingly used in the plastic.
We list a number of representative of the plastic used in the car, its production in the crushing and recycling to do a simple analysis shows:
★ bumper, dashboard and other difficulties: structural shaped, large size, including fiberglass bumper, dashboard and other larger components, the choice is generally abs , PPO, PP, pvc Etc. These components will enhance the strength of the material by adding fiberglass, so that the abrasion resistance of the pulverizer and the inner wall of the crushing chamber is high when the pulverization is recovered, and the dimensions of these parts are higher Large, in the crushing to improve efficiency, most of the current will use automatic feeding ---- crushing ---- transport ---- automatic separation of dust ---- bagging one-stop production line equipment, just put 1 Personal work, you can complete the traditional mode of operation 3-5 artificial to complete the work, and improve the efficiency of 30-50%.
★ steering wheel, interior handle, door trim, doors and windows seals, fender and other difficulties: flexible soft rubber is not easy to cut off these parts, most of the use of PU (foam), PVC artificial leather, TPV, plastic thermal elastomer , EPDM rubber, etc., the characteristics of these materials is flexible, deformation ability, feel good. In the crushing and recovery, these materials are difficult to cut off the soft, hot glue knife, agglomeration, no material and other problems. This is different from the ordinary crusher, this crusher for elastomer, rubber design, in the tool material, cutting angle, speed, knife shaft assembly methods are with the characteristics of soft; so that the material can be quickly (Such as low temperature TPU, high purity PP, hot melt adhesive, etc.), can also be added to the low temperature environment crushing, reducing the temperature, the use of special materials, Due to increased temperature caused by changes in physical properties.
★ interior, ceiling ceiling generally used plastic fiber sticky, plastic wool material bonded together, this fiber material in the final analysis, or made of plastic raw materials, so the same can be crushed with a pulverizer, and then further recycling. Plastic fiber sticky recovery need to pay attention to what? Knife shaft under high-speed rotation, it is easy to be powder; and fiber materials, can only be cut to be crushed.Therefore, such material crushing the fiber material crushing recovery, But also with ordinary hard plastic, it is relatively high material requirements of the crushing tool: ordinary hard plastic because of high hardness, it is generally more brittle, in the crushing, to pay special attention to the tool material, and cutting angle of choice.
★ lights, lamp cover lights, car cover components to consider the transparency and reflective performance, so the material is used in a transparent PC, PMMA, etc. Such materials in the crushing recovery, to avoid the crusher fuselage Raw materials, pollution, but also pay attention to the separation of dust generated in the crushing, because the transparent particles if the infiltration of powder, in the molding, it is likely to cause the product yellow, or produce black spots. Ordinary crusher can, but Need to dust. This kind of material in the crushing with ordinary crusher can meet the requirements, but in the crushing of the back, it is best to add a dust removal device. Can be crushed after the bag at the same time, remove more than 90% of the dust, So that crushed material in the re-molding, its performance and shape quality closer to the raw materials.
★ car control line control line in the amount of the car although the rubber does not account for such a large proportion, but its recycling value should not be overlooked.Traditional recycling methods: pollution, low utilization rate of the main components of the control line is PVC skin and Copper core. Only the two materials are separated, the recovery is valuable.But because these control lines are uneven thickness, and chaotic, the traditional dialing machine can not play the role of the old recycling method is to burn out the outer layer of PVC Internal copper, this method on the one hand the pollution caused by the environment, on the other hand also wasted PVC plastic.
★ the current recycling methods: cost-effective, small pollution and copper plastic separator, it is these messy control line crushed into rice grain size, and then use the different proportion of PVC particles and copper sorting, get clean PVC particles and copper . The separation and cleanliness of the two materials can be more than 99%. Can be directly re-use, the entire process using physical methods, does not change the performance of the material, it will not cause secondary pollution.