Development Trend Of PVC Processing Auxiliaries By PVC Pipe Manufacturers For Water Supply
PVC is one of the five largest universal plastics in the world. In recent years, with the rapid development of our national economy, PVC products grow at a rate of more than 20% each year.
PVC pure resin is easy to decompose, poor fluidity, low impact strength and poor weather resistance during processing. Therefore, various auxiliary materials need to be added to improve its performance during processing. Such as lubricants, heat stabilizers, impact modifiers, processing aids and so on. In the process of development and application of processing aids, according to the product ingredients can be divided into the following categories: methyl methacrylate (MMA) / acrylate copolymer MMA / styrene copolymer, acrylonitrile / styrene, the most popular, is the best MMA/ acrylate copolymer.
Processing aids was first developed by American Roman Haas (Rohm & Hass) in 1958, and the first brand named K-120 was introduced in the same year. Since then, many foreign companies have begun to dabble in this field and develop similar products. After 70s, with the rapid growth of PVC products, processing auxiliaries have been widely used. At present, the main foreign manufacturers and related products are Japan's MITSUBISHI (MITSUBSHI ROYAL) P series, kanegafuchi chemical (KANEKA) PA series, American Roman Haas (Rohm & Hass) K series, Germany bear (BEAR) F series, A Torfi Na P series (ATOFINA), and South Korea LG chemical PA series etc..
The early research on PVC processing auxiliaries in China is the Beijing Chemical Research Institute and the Shanxi Chemical Research Institute. The industrial production of Shanghai coral chemical plant was first realized in the early 80s, and the brand name was called ACR201 and ACR401 at home. In late 90s, with the rapid development of China's PVC industry, especially the rapid development of plastic profiles and plastic pipe industry, the demand for processing aids are also growing rapidly, the current Shandong output first, followed by Zhejiang, Jiangsu, major manufacturers have Shandong rike Chemical Co. Ltd., Zibo Huaxing, Ruifeng polymer additives, Shandong Hongfu Chemical Company Limited, the East chemical etc..
With the deepening of understanding of PVC plasticization mechanism, PVC processing technology and PVC equipment, processing aids manufacturers have developed a series of processing aids for processing equipment defects and PVC products performance defects. These processing aids are essentially different from traditional processing aids, breaking through the limitations of traditional processing aids, and solving a series of practical problems that traditional processing auxiliaries can not solve.