Talking about the Development and Application of PBT Plastics
2020-06-03 04:12:05
As one of the five general engineering plastics, PBT plastic is mainly used in the fields of PBT modification, PBT spinning, film drawing, fiber sheathing, etc. It can be widely used in automobile manufacturing, electrical and electronic, lighting appliances, home appliances, etc. after enhanced modification. Fields such as machinery and communications. In recent years, due to the development of domestic related industries, the demand for PBT resin has increased year by year. Japan and Taiwan PBT producers have increased their production capacity since 2002, and their export volume has increased significantly. Now it accounts for about 90% of China's total imports, which has impacted domestic PBT manufacturers. Affected by the international financial crisis and the appreciation of the renminbi, China's imports of polybutylene terephthalate (PBT) were 50,368 tons in January-June 2009, a decrease of 35.7% compared with the same period in 2008; the import value was US$117.81 million, compared with 2008. The year-on-year decrease was 40.4%.
With the rapid development of China's national economy, especially the rapid development of the downstream electronics industry and automobile industry, the demand for PBT market has been growing rapidly. In the case of anti-dumping against imported products by the state, bearing the rapid demand for plastics in the automotive industry in recent years, China's plastics industry and automobile industry have formed a trend of “one glory and one lossâ€. The plastics industry has turned its attention to the modification of PBT plastics, using lighter, stronger and better auto parts to alleviate the high oil price.
Modified PBT plastic refers to the addition of small molecules of inorganic or organic matter to a polymer, through physical or chemical action, to give a certain performance (machining performance) or to improve its performance. Such as toughening, strengthening, plasticizing, flame retardant, etc., and through the modification technology to make plastics have a fresh feature, and this is in the field of automotive and home appliances, the application and development potential of modified PBT plastics is the greatest. Modified PBT plastic is an important lightweight material for automobiles. It not only reduces the quality of parts by about 40%, but also reduces the procurement cost by about 40%. Therefore, the consumption in automobiles has increased rapidly in recent years. At present, the automotive interior has basically achieved plasticization, and the development of plastic-based steel is driving the development of innovative PBT plastics in the field of automotive applications.
In the automotive industry, PBT is widely used in the production of bumpers, fenders, carburetor assemblies, spoilers, spark plug terminal blocks, instrument panels, automotive igniters, accelerators and clutch pedals. The competition between PBT and enhanced PA, PC and POM in the automobile manufacturing industry is fierce. PA is easy to absorb water, and the heat resistance of PC is inferior to that of PBT. In terms of automobile use, PBT has better water absorption resistance than PA. Will gradually replace the PA. In the case of relatively high humidity and very humid, the plasticity is reduced due to moisture, and corrosion is easily caused at the electrical node. Modified PBT can often be used. Under 80 degrees 90% relative humidity, PBT can still be used normally, and the effect is effective. well. Among them, PBT/PC alloy is the most widely used in high-class cars.
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