Modification characteristics and development trend of nylon

Because nylon has many characteristics, it is widely used in automobiles, electrical equipment, mechanical parts, transportation equipment, papermaking machinery and so on. With the miniaturization of automobiles, the high performance of electronic and electrical equipment, and the acceleration of the weight reduction of mechanical equipment, the demand for nylon will be even higher. In particular, nylon, as a structural material, places high demands on its strength, heat resistance and cold resistance. The inherent shortcomings of nylon are also important factors limiting its application. Especially for PA6 and PA66, it has a strong price advantage compared with PA46 and PAl2, although some properties can not meet the development requirements of related industries. Therefore, it is necessary to expand the application field by modifying and improving certain properties for a certain application field. Mainly modified in the following aspects:
1 Improve the water absorption of nylon and improve the dimensional stability of the product.
2 Improve the flame retardancy of nylon to meet the requirements of the electronics, electrical, communications and other industries.
3 improve the mechanical strength of nylon to achieve the strength of metal materials, replacing metals
4 Improve the low temperature resistance of nylon and enhance its resistance to environmental strain.
5 Improve the wear resistance of nylon to meet the requirements of high wear resistance.
6 Improve the antistatic properties of nylon to meet the requirements of mining and its mechanical applications.
7 Improve the heat resistance of nylon to adapt to the field of high temperature conditions such as automobile engines.
8 Reduce the cost of nylon and improve product competitiveness.
In short, through the above improvements, the high-performance and functionalization of nylon composite materials can be realized, and the development of products in related industries to high performance and high quality can be promoted.
Latest developments in modified PA products
As mentioned above, glass fiber reinforced PA has been studied in the 1950s, but the industrialization was in the 1970s. Since the development of super tough PA66 by DuPont in 1976, major companies in various countries have developed new modified PAs. Products, the United States, Western Europe, Japan, the Netherlands, Italy and other vigorously develop enhanced PA, flame retardant PA, filled PA, a large number of modified PA placed on the market.
In the 1980s, the development of compatibilizer technology succeeded, and the development of PA alloy was promoted. PA/PE, PA/PP, PA/ABS, PA/PC, PA/PBT, PA/PET, PA/ have been developed in various countries around the world. PPO, PA/PPS, PA/I.CP (liquid crystal polymer), PA/PA and other thousands of alloys, widely used in automotive, locomotive, electronics, electrical machinery, textiles, sporting goods, office supplies, home appliance parts and other industries .
In the 1990s, new varieties of modified nylon continued to increase. During this period, modified nylon became commercialized, forming a new industry and rapidly developing. In the late 1990s, the world's nylon alloy production reached 1.1 million tons/year. .
In terms of product development, it mainly takes high-performance nylon PPO/PA6, PPS/PA66, toughened nylon, nano-nylon, and halogen-free flame retardant nylon as the leading direction; in application, the development of automotive parts and electrical components has made significant progress, such as The high flow modified nylon for automotive intake manifolds has been commercialized. The plasticization of such complex components is of great significance in application, and more importantly, it extends the life of components and promotes the processing technology of engineering plastics. development of.
The trend of modified nylon development
As the largest and most important variety of engineering plastics, nylon has a strong vitality, mainly because it is modified to achieve high performance, followed by the automotive, electrical, communication, machinery and other industries. The rapid development of related industries has promoted the process of high performance of engineering plastics. The future development trend of modified nylon is as follows.
1 The market demand for high-strength and high-rigidity nylon is increasing. New reinforcing materials such as inorganic whisker reinforcement and carbon fiber-reinforced PA will become important varieties, mainly used in automotive engine parts, mechanical parts and aerospace equipment parts.
2 nylon alloying will become the mainstream of the development of modified engineering plastics. Nylon alloying is an important way to achieve high performance of nylon, and it is also the main means to manufacture nylon special materials and improve the performance of nylon. By blending other high polymers, the water absorption of the nylon is improved, the dimensional stability of the article, and the low temperature brittleness, heat resistance and abrasion resistance are improved. Therefore, it is applicable to the different requirements of the vehicle type.
The manufacturing technology and application of 3 nanometer nylon will be rapidly developed. The advantage of nano-nylon is that its thermal properties, mechanical properties, flame retardancy, and barrier properties are higher than that of pure nylon, and the manufacturing cost is comparable to that of back-pass nylon. Therefore, it is very competitive.
4 Flame retardant nylon for electronic, electrical and electrical appliances is increasing day by day, and green flame retardant nylon is receiving more and more attention from the market.
5 antistatic, conductive nylon and magnetic nylon will become the preferred materials for electronic equipment, mining machinery, textile machinery.
6 Research and application of processing aids will promote the process of functionalization and high performance of modified nylon.
7 The application of comprehensive technology, the refinement of products is the driving force for the development of its industry.

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