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PPS National Standards Review Meeting Held in Shangyu

Time:2017-11-06 08:17:21     Author:Admin


From Oct 26 to Oct 27, the National Standard Review Meeting for Plastic Polyphenylene Sulfide (PPS) Molding and Extruded Plastics Part 1: Nomenclature System and Basic Specification was held in Shangyu Hotel. A total of 24 representatives from the TC15/SC9 committee members and standards working group attended the meeting. The committee members and representatives attending the meeting carefully discussed and reviewed the manuscripts of the standard and relevant materials. Committee members voted on the standard for a total of 24 votes. All votes are valid with the passing rate of 100% and the voting members occupied more75% of the whole committee members (the number of all members is 29).

This standard project is proposed by the China Petroleum and Chemical Industry Association, and managed by the Sub-technical Committee (SAC/TC15/SC9) on Engineering Plastics of National Technical Committee on Plastics Standardization. China Bluestar Chengrand Research Institute of Chemical Industry Co., Ltd. is responsible for the drafting work, and Zhejiang NHU Special Materials Co., Ltd., Sichuan Deyang Special Materials Co., Ltd., National Quality Supervision and Inspection Center on Synthetic Resin also participate in the work. The project has undergone a large number of previous surveys and researches, including the three working meetings held in 2012 in Chengdu, 2015 in Dunhuang and 2017 in Shangyu, respectively. At present, the final draft standard for approval has been prepared.

Polyphenylene sulfide (PPS) is a crystalline polymer whose production and demand are ranked after the top five general-purpose engineering plastics, e.g. polyamides (PA), polycarbonate (PC) and polyoxymethylene (POM), called the sixth engineering plastic. PPS is a kind of special engineering plastics with excellent comprehensive properties. Due to the excellent affinity between PPS and inorganic fillers, reinforcing fibers as well as its compatibility with other polymer materials, PPS can be manufactured into different reinforced filled varieties and polymer alloys. PPS has a wide range of applications, mainly in automotive, electronic appliances, household appliances, machinery industry, petroleum, chemical, pharmaceutical, light industry and other industries. For example, fiber-grade PPS is a kind of special engineering plastic with excellent performance. It is widely used in the field of electronics, automobile, machinery, environmental protection and aerospace. Fiber-grade PPS is an important fundamental material for the development of high-tech industries, such as IT, spaceflight, environmental protection and energy.

Both the market demand and production of polyphenylene sulfide are increasing every year in the international market and the domestic market, and the same trend of growth will maintain in the next few years. Polyphenylene sulfide is witnessing its rapid development, during which period, the corresponding international and national standards have been established by some foreign countries in advance, and the standards system of polyphenylene sulfide is gradually developing. Currently in China, there are no technical norms to constrain the vicious domestic and foreign manufacturers. There is also no unified standard to guide the market. As a consequence, the administrative law enforcement departments do not have the norms to judge whether the products are qualified, let alone set the technical barriers for foreign products and reasonably protect the interests of China's manufacturing enterprises. In summary, there is a serious mismatch between the standard development and market development of PPS in China. Therefore, it is imperative to study and establish the national standard of polyphenylene sulfide (PPS).

The meeting has promoted a crucial step for the establishment of a national standard system on PPS. The release of the standard is expected to regulate the production process and guarantee the product quality, to further improve the overall competitiveness of China’s PPS production enterprises. 

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