On September 1, 2015, the 2015 (3rd) International Conference on Polymer Compatibilization Technology, sponsored by Jiayirong®, which is also equipped with “upstream polymerization and downstream modification technology platformâ€, was successfully held at Shanghai Hongqiao Yuanyi Hilton Hotel. Ended.
The main purpose of the conference was to promote technical exchanges in the field of compatibilizers, strengthen the understanding and understanding of the downstream modification industry in this field, and promote technological innovation throughout the industry chain.
Speaker: Mr. Sakai, Mr. Sakai, Visiting Professor at Shizuoka University, Honorary Member of Japan Steel Works, Honorary Member of Plastics Processing Society, Partner of Polymer Society, US SPE Partner, Vice President of Synthetic Resin Technology Association. He has received the Technology Award from the Chemical Society, the Technical Sauce of the Plastics Processing Society, the Director of Science and Technology, and the American SPE Association Technology Award.
The following contents are sorted according to the shorthand on the conference site and have not been reviewed by me.
China is the fastest growing plastics market in the world
At present, there are many original technologies in plastic alloys. Mr. Sakai has been doing research on plastic alloys for nearly 50 years. The current plastic products have been applied in all aspects of life, which is the trend of the use of plastic products in the world. The main market for plastic products is the United States, Europe, and Japan, but recently the market for plastic products in Japan has declined. One reason is that Japan is currently promoting plastic recycling. In other parts of the world, the consumption of plastics is still growing, especially in Asia, especially in China. In the future, we will vigorously develop plastics with higher recovery value. The entire plastic processing plant is in various shapes, mainly from raw materials produced by the raw material plant and then through the extruder to form various products. Regarding the whole industry, it is divided into two aspects. On the one hand, there are a large number of large factories, and there are dozens of tons of production every year. There is also a high-priced plastic, mainly using plastic alloy technology. In order to use this technology, there are various extruders, among which are the machines for desiliconization, five machines are connected together, and the machine is also The bigger the number, the more recently the machine with a length of 10 meters has appeared, and the size of a few hundred meters can be made in an hour. In order to produce high-performance plastics, similar extruders are constantly being developed. The injection molding machine for automotive products uses four axes, mainly for the glass windows of automobiles. We have seen that the production and consumption of automobiles are growing year by year, especially in China, where the market is growing very fast. The parts of the automobile also have these components. The amount of plastic used has increased year by year. Now about 10% of the parts of the car are made of plastic. Although the parts of the car are used more, the polymer alloy is used. More. In terms of alloys, especially in engineering plastics, its market prospects are relatively large. The Chinese market is probably the fastest growing of all markets in the world.
New demand spawns new injection molding machine
A trend in the use of cars is to reduce carbon dioxide emissions, and then to save energy, and the demand for safety is growing rapidly. The contribution to society is the use of natural raw materials, and information-related technologies are also evolving, such as Apple's electronic devices. There has been a trend to make small cars recently, which are mainly powered by electricity. For example, in the Japanese market, Japan is aging more seriously. Older people need to operate a simple car, that is, they will not emit too much carbon dioxide, and cars using fuel cells are also developing. When the car is parked, the button is pressed and the person leaves the car and the car stops at the parking lot. From the processing methods used in plastics, most of the plastic products are formed using an extruder. In the case of joint use of injection molding machines, the technology of adding some thin films inside, from the basic goal, is mainly to save energy, second, and safety, and third, for recycling. From the perspective of injection molding machines, technology is gradually developing, and the technology of scraping plastics with super-energy carbon dioxide has recently been popular. There are two development directions for injection molding, one is getting bigger and bigger, and the other is improving accuracy in maintaining the current scale. For example, on the screen, the LCD screen has a bigger and bigger technology. In terms of computer simulation, flow simulation technology has gradually matured. In addition to flow, it can simulate many other aspects, such as temperature. This type of technology is gradually evolving in the use of computers for analog extruders, including polymer alloys. The technology of the injection molding machine itself is also developing. It used to be hydraulic, and now it is gradually developing towards electricity. In addition to the reduction in energy consumption, electronic control, maintenance capabilities are also improved, and can produce beautiful products for medical electronics.
With regard to the technology of injection molding machines, it is now possible to make quite complex injection molding. This process is called DSI process, and the use of raw materials is 30% Nyhon6+GF, which can reduce his cost. There is also a trend that automotive products now use more fiber products. This product uses glass-containing fibers. With fiber-containing technology, the weight of the car will decrease and the cost will decrease. The technology for using this type of glass fiber is gradually developing. Recently, the technology that uses carbon fiber has attracted attention. Now, the number of automotive parts and components using carbon fiber products has gradually increased. Originally, carbon fiber was mainly used to reduce the weight of the aircraft on the aircraft, which can reduce the fuel consumption by 20%. Now, when using carbon fiber in the car, he can reduce the weight of the glass fiber and save energy. Toyota's cars use carbon fiber technology, which weighs only 850 kilograms. Toyota's newly developed hydrogen as a fuel, although costly, is a future development trend. Because hydrogen is used as a raw material, his emissions are zero, so carbon fiber is mainly valued in Japan in order to reduce weight and reduce flow consumption. It is also possible to directly add carbon fiber to the extruder using an extruder and then extrude it. Another new technology that is now attracting attention, in addition to carbon fiber, uses spider silk as an improved method of filler. This spider silk is artificially produced by genetic manipulation. It can be used in many places. Regarding the future use of polymer composites, it is predicted that the use will reach 20% in 2035, and polymer polymers will play a big role in the future.
Twin-screw extruders are developing rapidly
This is the polymer alloy that has been made. His main application is still in automobiles and home appliances. The production process of the polymer composite is first put into the fuel melt, and then the compatibilizer is added to react and re-form. The resulting plastic particles are then injection molded, etc., and then made into a replica. In order to make a material with characteristics, the most important is his microscopic structure, for which a chemical reaction occurs to increase his compatibility. Made into such a product, the most important is the twin-screw extrusion technology. If you want to make such a product, if it is not well mixed in the extruder, it will be difficult to make a product that meets the standard. Polymer alloys, many machines have been developed before. The machine that is now making polymers is mainly a machine developed in 1970, and a twin-screw biting machine that rotates in a contract direction. From the point of view of the production volume of the machine, only 200 kg can be produced in 1998, and now it has reached 10 times of production. The reason is mainly because the thread of the extruder screw is gradually deepened, and the rotation speed of the screw is 100 rpm. 200 revolutions, it has now reached 800 revolutions. Now the length of the screw has also changed. It used to be 20 and it is now 40. The original element of the screw used in the screw is also gradually developing a new original element. The original analysis of the material of the extruder can also be analyzed. This is the development history of the screw. In the past, it was mainly a three-threaded original. Now the threaded original of the two ends is used as a hub, and the depth of the thread is gradually deepened. The thickness of the screw shaft becomes narrower and narrower, and it is very important that the narrowed screws allow him to rotate at the same speed. The density of the torque is getting higher and higher. In the past, it was only 3.7, and now it is 1.22. The density of the torque is gradually increasing. In order to maintain a certain cooling time, a certain degree of torque can be achieved.
There are many original thread parts, such as single head, two heads, three heads, a technology that can be used to blend the whole water, and other grooves in the copper body. After using this technique, his impact length will increase significantly with the same throughput. Recently, this complex blending can be simulated by computer, and this data is done using this computer simulation technique. Particles made from ordinary copper bodies by computers have a high degree of blending of particles without grooves. There is also a data his temperature control is also better, especially low temperature blending. The red technology is the part of high temperature. The common copper body is insulated. The upper part is 344 degrees, and the lower part is 324 degrees. Using this calculation method, the three parts of the screw are compared with the round screw. The simulation calculation uses a glass fiber material. It can be seen from the calculation that the dispersion of the ordinary three-headed snail original particles is not particularly uniform, and the dispersed particles at both ends are relatively uniform. In terms of particle distribution, the distribution of the three heads is strong, and the weak places are weak and not very uniform. This is better than the circular pressure dispersion. The three-headed screw original is very high and will not work after that. Compared to the circular screw, the distribution is relatively uniform. In other words, if the fiber is relatively strong, the glass fiber will be cut off inside. The previous example was the use of computer simulation technology. The denatured size of PC/ABS is relatively large, and it is gradually developing toward nanostructures. Because of this structural change, the materials made now are stronger than before. This state can be controlled by the various degrees of closure of the extruder. Particles can be made smaller if the closure is well controlled. Originally, the compatibilizer was used to interconnect, that is, the polymer that had been broken by the screw was reconnected by the compatibilizing agent, so that the dispersed state could be fixed. The new aspect of this technology is to add inorganic nano-fillers to promote compatibility. If carbon black is added, it can achieve better results. The addition of inorganic materials to organic systems is a very good research direction in the future, such as adding clay to natural rubber.
Bioplastics and nanocellulose have become a trend
The development of electric vehicles on plastics is mainly about the development of a bioplastic, and it is predicted that there will be more in 2025.
More demand. Nowadays, polylactic acid in Japan is about 5,000 tons a year. It can be used in many materials and has a lot of effects on the core materials. Toyota has a car that is already on the market. 60% of it is made of bioplastics. This is a car made a few years ago. It is a bioplastic car. There is also an example of the trend to use nanocellulose, which is an example of natural rubber, which contains 3% of nanocellulose, which is the most recent nanocellulose application used in batteries. This technology is still under development, and the market has not yet sold, which means that this is just another possibility. Regarding the development of various main plants, this is about Ford's idea that Ford requires materials that are lighter than glass. Another aspect relates to coloring and dyeing, whether nanocellulose fibers have better dyeability. This example was published by Jinshang University. The dyes using nanocellulose are better than ordinary dyes. It is not only a monomer problem, but also the latter nanocellulose can be applied. Whether it is nanocellulose or carbon nanotubes, their common size is easier to copolymerize together. This is a dispersion technique that was originally dispersed using water. This example is an example of using carbon nanotubes, and the side is a carbon nanotube, and such a technique is better dispersed. Nanocelluloses have similar problems. If they are very compact, they are easy to polymerize together. It is better to mix them with water before polymerization. This is the method by which Jinshang University publishes a new nanocellulose dispersion, which is preceded by a pre-treatment of the common voxel. When solidified for a long time, it can make the same decentralized material, and the strength is similar to the previous one. It is equivalent to achieving nanofiber blending while doing nanofiber blending.
The future belongs to "skilled" plastics
The trend towards new technologies is mainly the increase in added value, the cost reduction, and then the energy savings, including the reduction in emissions. There is also automation as much as possible, because there are fewer and fewer drivers for taxis in China, so automation is also a trend. Then there are sustainable materials, zero-emission materials, such as biomaterials, and cellulose nanomaterials. There is an analysis of the extrusion skills of an extruder, such as a chemical reaction technique. The technology of computer simulation will become more important. Regarding the monitoring technology of the extruder, it is equivalent to entering a black box, so the monitoring of the extruder is also very important. That is to say, what is happening in the extruder is becoming more and more important. Through the development of various technologies, for example, through optical molecular technology, in general, the analysis technology of the extruder, the computer simulation technology is more and more important. The era is coming. Regarding the trend of material supply in the world, the data given by a university in the United States will gradually reduce the use of wood with the development of the times, and then the metal usage of aluminum and magnesium will be more. Regarding the amount of plastic used, it is not only a quantitative increase but also the development of new skill-based plastics. The future plastics industry will grow stronger!
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