Plastic additives, also called plastic additives, are some compounds that must be added in order to improve the processing performance of the polymer ( synthetic resin ) during molding or to improve the insufficient performance of the resin itself. For example, plasticizers are added in order to reduce the molding temperature of polyvinyl chloride resins and make products soft ; in addition, foaming agents are added in order to prepare light-weight, vibration-resistant, heat-insulating and sound-insulating foams ; some plastics are thermally decomposed The temperature is very close to the molding processing temperature, and molding cannot be performed without adding a heat stabilizer.

Therefore, plastic additives occupy a particularly important position in the plastic molding process. There are many ways to classify plastic additives. A more common method is to classify the additives according to their functions and functions. In the category of the same function, it is often further subdivided according to the mechanism of action or the type of chemical structure.

(1) Market overview

At present, plastics are mainly divided into general plastics and engineering plastics according to their uses. General-purpose plastics generally refer to plastics with large output, wide usage, good formability, and low price. Polyvinyl chloride (PVC) , polyethylene (PE) , polystyrene (PS) , polypropylene (PP) , acrylonitrile - butadiene ene - styrene (ABS) plastic is the five most commonly used general-purpose plastics, wherein the PVC -based.

Plastic additives are the associated industries of the plastic industry, and its development degree is closely related to the development of the plastic industry. PVC products are widely used in the production fields of chemical building materials, agricultural PVC plastic products, industrial PVC plastic products, packaging materials, etc. with advantages of low cost, easy installation and use, corrosion resistance and aging, and good thermal insulation performance .

From China's current PVC products consumption structure, PVC hard products and soft products accounted for respectively 59.2% and 40.8% , of which, industrial civil engineering rigid PVC main demand, pipe accounts for about 13.3% of the share, profiles, doors and windows It accounts for 22.9% of the market ; among soft products, the largest amount is film.

With the continued prosperity of China's economy, the plastics processing industry maintains rapid growth and has great development potential. Driven by positive factors such as national policies to promote energy conservation, emission reduction, and circular economy development, economic and technological innovation, the accelerated development of the construction of a new socialist countryside, the urbanization process, the continuous improvement of people ’s living standards, and the rise of domestic consumption, the plastic industry The great development of China has been further promoted.

In recent years, with the development of China and the global economy, the scale of the PVC product industry is continuously expanding, the product output is increasing year by year, the main economic and technical indicators have increased significantly, and the orderly development of the entire industry has continued to grow. Step forward to the road of sustainable development in a powerful country.

At present, plastic additives have various categories and many functions, which run through all links of resin synthesis, plastic product processing and final application. The plastic additives industry has become an important branch of the fine chemical industry.

     Article link: China Plastic Online http://info.21cp.com/industry/News/201812/1491388.htm