Modified plastics refer to plastics that are processed and modified by filling, blending and other methods in resins of general plastics (PE, PP, PVC, PS, ABS) and engineering plastics (PA, PC, POM, PBT, PPO) to make them have better properties such as flame retardant, impact resistance and easy processing.
Modified plastics overcome the defects of ordinary plastics such as poor heat resistance, low strength and toughness, weak wear resistance, but also given new characteristics such as flame retardant, weather resistance, antibacterial, antistatic, chemical resistance, electrical conductivity, wear resistance, thermal conductivity and so on. The superior comprehensive properties of modified plastics make them widely used in household appliances, automobiles, communications, medical, electronic and electrical, rail transit, precision instruments, home building materials, security, aerospace and other fields.
Plastic modification rate refers to the percentage of the total production of modified plastics in the total production of plastics (including modified plastics and unmodified resins), which is an important indicator of the development level of plastic industry in a country or region.
At present, the annual output of the modified plastics in Chinese industrial enterprises above scale is more than 20 million tons, with the modification rate accounting for about 22%. Although this is related to the large output of Chinese base resins, there is still more room for improvement compared with the global plastics modification rate of nearly 50%.
In the process of plastic modification, functional auxiliaries are the core elements to achieve resin modification, which can often play the role of four or two dial a thousand jin, the Midas touch! At present, the hottest and most commonly used plastic functional additives are flame retardant, weather resistance agent, conductive agent, reinforcing agent, wear-resisting agent, antibacterial agent, anti-hydrolysis agent and so on.
Flame retardant is the second largest amount of plastic additives, in addition to the requirements of conventional flame retardant, for different application scenarios and resins, also put forward requirements for other properties, such as ultra-high flame retardant, halogen-free, thin-walled, high CTI, high heat resistance, low temperature resistance, high impact, precipitation resistance, high transparency……