Domestic PPS Fiber Is Still Less Than Needed.

In recent years, the production capacity of polyphenylene sulfide in China has been further expanded. At present, the production capacity of PPS resin has reached 36 thousand tons, fiber production capacity is about 20 thousand tons, and its output is 3000~4000 tons.

The amount of PPS fiber in China is about 5000~5500 tons per year, and the global consumption is about 8000 tons. China's PPS fiber accounts for about 60% of the world's total, becoming the main use of PPS.

"We have only one earth" to control the emission of smoke and dust, and the interception of smaller dust particles will become the key to control emissions.

The outline of textile and technology development in 12th Five-Year has put filtering textiles as a key breakthrough technology and placed it in a very important position.

The preparation and processing technology of high temperature resistant, acid resistant, alkali resistant and highly efficient filter products has become a breakthrough for filtering textiles. Therefore, in recent years, polyphenylene sulfide (PPS) fiber has been widely regarded as one of the high temperature resistant and corrosion resistant fiber materials with superior cost performance.

At present, the major polluers, such as power plants, cement plants and refuse incineration plants, have switched to "bag filter or electrostatic + bag type dust removal" in order to meet the emission standards stipulated by the state.

Under the premise of ensuring the same efficiency of dust removal, the cost and operation cost of bag type dust removal are lower than that of electrostatic precipitator. Therefore, bag type dust removal has become the high temperature and dust removal method adopted by all countries in the world.

PPS is the main material used in bag filter, which makes the market share of PPS expand year by year.

Zhu Minru, honorary president of China Industrial Textiles Association, said that this new high temperature fiber and acid resistant textile and filter fabric will be one of the key development directions in the next few years.

China has become a major PPS power.

PPS is one of the flame retardant fibers.

Because of its high breaking strength, low moisture regain, high temperature resistance and high limit oxygen index, it has become the first choice for industrial filtration fabrics.

Its application in environmental protection, chemical filtration and military fields is particularly prominent.

Such as high temperature bag type dust removal, garbage incinerator filtration, cement plant filter bag, electrical insulation material, flame retardant material, composite material and so on.

In addition, it can also be used as a dryers with canvas, sewing thread, various protective cloth, heat resistant material, electrical insulation material, electrolytic diaphragm and friction plate (brake), etc.

According to different uses, it is divided into short fiber and filament products.

In recent years, many enterprises in China have actively developed and applied it, and initially formed a certain production capacity, which changed the situation of completely relying on imports in the past.

It is understood that in recent years, China's PPS production capacity has further expanded, and the field of use has been expanding.

Besides the use of engineering plastics, the use of fiber grade PPS has increased year by year.

At present, China's PPS resin production capacity has reached 36 thousand tons, fiber production capacity of about 20 thousand tons, the output of 3000~4000 tons.

The consumption of PPS in the world is around 8000 tons per year, while the amount of PPS used in China is about 5000~5500 tons, which has become the main user of PPS.

At present, China's fiber grade polyphenylene sulfide polymerization, silk spinning industrialization technology and equipment has made significant breakthroughs, reached the international advanced level, successfully replace imports.

The world's leading PPS resin producers are Chevron Phillips, Tyco, Japan's woo chemical industry company, Japan Japan ink chemical industry company and so on. PPS fiber has Japanese Dongli company and Dongyang spinning company, etc. they occupy the main market of PPS.

China's PPS started late, and now Sichuan and Jiangsu Technology Co., Ltd., Jiangsu Ruite Technology Co., Ltd., Yingkou Yingkou Environmental Protection Technology Co., Ltd., Zhejiang Haining new energy Textile Co., Ltd. and other enterprises to produce resin and fiber products.

Among them, Sichuan Polytron Technologies Inc is the largest R & D and production enterprise of polyphenylene sulfide resin and series products in China.

In 2002, the company built the first 1000 ton class PPS resin production line in China, and was listed in the national high technology industrialization demonstration project and the national science and technology ministry Torch Program project.

On the basis of technical breakthroughs, the company accelerated the research on the application of domestically produced resin, and subsequently built a production line of PPS fiber grade resin production equipment with an annual output of 6000 tons and an annual production line of 4000 tons PPS short fiber and an annual output of 1000 tons of PPS filament. The PPS realized the whole process from resin to fiber for the first time, filling the domestic gap.

It is understood that the company's PPS resin annual output exceeded 10000 tons level.

Jiangsu Ruitai Technology Co., Ltd. is a manufacturing enterprise mainly based on PPS fiber.

In 2010, Rite-Hite Corporation invested in the construction of a new PPS plant in Zhangjiagang. After commissioning, the design capacity was 10 thousand tons per year and 3000 tons per year.

At present, the first stage production has reached the design target, forming a production scale of 2500 tons before spinning and 5000 tons after spinning.

According to Wang Hua, former deputy general manager of Rite-Hite Corporation, at present, the technical indicators of RT polyphenylene sulfide staple fiber have been close to the products of Dongli, Japan, and the capacity is close to 2500 tons. The filament has been partially produced in scale, and the capacity is expected to reach 3000 tons / year.

In terms of PPS products, Foshan spp special material Co., Ltd. has successfully built the first PPS spunbonded needle punched nonwovens production line in China, and has successfully trial production.

This production line has realized the new process of PPS processing nonwovens, and the filter bag made of this nonwoven fabric can achieve the effect of fine filtration, filling the domestic blank.

PPS application areas need to be expanded

Search for polyphenylene sulfide in Baidu has 1 million 300 thousand related results.

Data show that the PPS application area is very broad, involving electronic and electrical appliances, precision machinery, automobiles, motorcycles, and petroleum, chemical and other industries.

In recent years, with the rapid development of electronics and automotive industry, the application field of PPS is expanding gradually, and the market prospect is very broad.

But at present, there are few enterprises that have the ability to produce polyphenylene sulfide products in China, and the output is not enough to meet the growing demand in China.

Some of the enterprises that claimed to have PPS mostly belong to trading companies and do not have the production capacity of fiber grade polyphenylene sulfide. This makes the development of PPS in China to some extent restricted.

Huang Qing, director of the Research Institute of melt spinning of the Chinese Academy of textile science, believes that PPS fiber has not been fully developed as a new type of high temperature resistant material. China's application in the PPS market is still insufficient.

"Such as battery separator, new composite materials, etc., compared with foreign countries, we have a big gap.

How to use it?

How to open up domestic and international markets?

It is a matter that should be studied emphatically. "

"In addition, in the commercialized operation of PPS, we are lagging behind the developed countries," he said.

With the rapid development of PPS application, many manufacturers and some investors at home and abroad are intending to intervene in the production of PPS resin and fiber grade products. On the one hand, it reflects that the PPS production boom is being formed in China. On the other hand, it also reflects the competition situation at home and abroad, which will contribute to the further promotion of PPS in the country and the expansion of the market and application fields.

Not long ago, due to the impact of the Japanese earthquake, Wu Yu company located in Fukushima Prefecture of Japan may face a shutdown. This will further aggravate the tension of global PPS production and demand. In addition, the total demand for PPS in the automotive and electronics industries will further expand in recent years. This provides an excellent opportunity for all PPS resin producers and fiber enterprises to expand their capacity.

As the rising star of PPS's new fiber production, the great change of international PPS market structure will bring great influence and challenge to the whole industry. At the same time, it also brings a rare opportunity for development.

Industry experts pointed out that, combined with the development trend of PPS and new materials at home and abroad, based on the development of new PPS material varieties and the development of new PPS synthesis methods, we should also focus on the research and development of new modified materials and special materials, actively and steadily develop new PPS composite materials and modified varieties, and establish larger scale production facilities as soon as possible to meet domestic demand.

Among them, the establishment of an annual 5000~8000 ton PPS resin production line as soon as possible is the top priority and strategic move for the development of PPS in China. It is of great significance to break the restrictions and blockade of foreign technology and meet the needs of high performance structural materials in various fields of national economy and military industry.

At present, solving the problems of PPS resin, fiber production technology, product variety, high performance products and capacity expansion urgently will become the next development direction of PPS industry in China.

The level of PPS industrialization needs to be improved.

It is understood that foreign PPS is mainly used in engineering plastics, and fiber accounts for only 5%~10% of the usage. However, the amount of PPS fiber used in China accounts for about 60% of the world's PPS fiber usage, and has become a great power in application.

China is a big country of energy consumption. Electricity is mainly composed of coal and electricity.

With the improvement of environmental protection requirements, the use of PPS bag type dust removal is inevitable.

But according to the reporter, many power plants in China do not use PPS bag dust remover for a variety of reasons.

The reason is mainly due to the economic and long-term use of inertia considerations, the traditional electrostatic precipitator to bag dust removal, power plant enthusiasm is not high.

Secondly, electrostatic and bag type dedusting methods, because of electrostatic reactions such as ozone and other chemical reactions, shorten the service life of cloth bags, so that the cloth bags that can normally be used for 2~3 years are greatly shortened, generally less than 8 months, which undoubtedly increases the cost of users.

In addition, due to the gap between the use and demand of PPS fiber in China, the application of PPS in bag dust removal is restricted.

For the situation that China's PPS production capacity is expanding rapidly, but its output has not been high, Wang Hua, deputy chief engineer of Sichuan Textile Science Research Institute, thinks that this is mainly related to unstable production and consumption, and the cost can not be effectively reduced.

He said that the level of resin purification and solution recovery system in China is still quite different from that in developed countries.

Wang Hua believes that although China has become a major producer and user of PPS fiber, its output is very limited, and its actual output is about 2000~3000 tons per year.

"One is affected by insufficient supply of upstream raw materials. Two, the quality of domestic fiber products is not very stable. Therefore, China's fiber grade PPS has been unable to meet domestic demand."

He said.

Faced with these problems, the experts pointed out that the relevant departments of the state should continue to support vigorously, and the industry and enterprises should make joint efforts to comprehensively upgrade the industrialization level of domestic PPS fiber and composite materials, and make greater contributions to the development of related industries.