Ultra-precision machining technology is an important foundation for the development of cutting-edge defense technology and an important technology with strategic significance. In the 1990s, the United States used large-scale precision CNC lathes to produce giant metal mirrors with nanometer precision, making the world's most powerful lasers successful for laser nuclear fusion systems. The system can be used for nuclear fusion research to develop clean new energy, and can be used for simulation experiments of nuclear weapons to replace real nuclear weapons and improve nuclear weapons. It can be seen that the importance of accelerating the development of China's ultra-precision processing technology is self-evident. In this respect, the country has lagged behind the international level of various industrial powers and cannot meet the needs of the national defense industry and various industrial fields and high-tech development. The introduction of advanced equipment from abroad is not only expensive but also limited, and the road to introduction can only be left behind forever. To others. Therefore, it is necessary to invest sufficient human and material resources to accelerate development in order to adapt to the needs of national defense modernization such as aviation, aerospace and weapons in a relatively short period of time. With the development of modern science and technology, new requirements have been put forward for ultra-precision machining technology, and its application has been extended to various fields of the national economy. (Finish)
Chlorinated polyethylene is a saturated polymer material with a white powder appearance. It is non-toxic and tasteless. It has excellent weather resistance, ozone resistance, chemical resistance and aging resistance. It has good oil resistance, flame retardancy and coloring properties. It is an excellent impact modifier for PVC plastics and a synthetic rubber with good comprehensive performance. It has a very wide range of applications and has been widely used in cables, wires, hoses, tapes, rubber and plastic products, sealing materials, flame retardant transport belt , Waterproof coiled material, film and various profiles and other products.
As a PVC impact modifier, CPE135A has many advantages such as low price, excellent performance, and excellent aging resistance, but it has certain disadvantages in the use of high impact and high hardness products and low temperature resistant products CPE135A. For example, in the formulation of rigid PVC, a large amount of CPE will reduce the hardness and rigidity, which reduces the physical properties of the product; in addition, when the low temperature resistance requirement of PVC products exceeds minus 30°C, CPE135A cannot meet the requirements. Under normal circumstances, modified CPE, such as ACM, RGC135A, etc., can be selected for rigidity and hardness improvement; for low-temperature resistance modification, impact-resistant ACR or other impact modifiers with lower glass transition temperature can be selected. CPE 135A,Cpe-135a,Cpe 135a Impact Modifier,Impact Modifier Henan Shunbang Chemical Industry CO.,Ltd , https://www.sbcpe.com