In the process of my country’s oil and chemical industry from large -scale manufacturing to high -quality manufacturing, innovative results in the field of new materials with low penetration rates with low domestic enterprises have sprung up like mushrooms, and their own two, polyolefin elastomers (POE), carbon fiber fiber, and carbon fiber The situation of new materials such as biodegradable plastics and other new materials is exciting. At the 6th school -enterprise scientific research work exchange and docking meeting and the China Petroleum and Chemical Industry Federation held in Shanghai on April 20, Luo Qiming, deputy director of the Science and Technology and Equipment Department of the Petrochemical Federation, combed and sorted out and inventory.
Key organic raw materials have made breakthroughs
Adiponitrile is an important raw material of nylon 66, which is difficult to produce technically. Until now, the product market was dominated by Invista. In recent years, with the rapid development of chemical fiber, engineering plastics and other fields, nylon 66 application field is more broad, a number of domestic enterprises have made breakthroughs in the research and development and industrialization of adiponitrile, adiponitrile projects have started.
Luo Qiming introduced that there are two main technical routes in the domestic research and development of adipdinitrile, namely adipdinic acid method and butadiene method.
Chongqing Huafeng Group is constructing a 200,000-ton adipdinitrile plant based on the 100,000-ton adipdinitrile plant to be completed in 2020 by using adipdinic acid process.
The butadiene process is also the technology used by Invista, which has the advantages of short process route, low raw material cost and good product quality. After years of research and development, China Chemical Tianchen Qixiang New Materials Co., LTD., the use of butadiene direct hydrocyanidation technology construction of 200,000 tons/year adiponitrile device has also opened up the whole industry chain and successfully started.
According to the reporter, what shares of the construction of 50 tons/year butadiene method adipdinitrile project will also be commissioned at the end of this year.
Domesticization of polyolefin high -end varieties
“The gas-liquid polyethylene process and tubular polypropylene process, which has independent intellectual property rights, have both been made in our country. “High-end polyolefin products such as POE and UHMWPE (ultra high molecular mass polyethylene) press the ‘accelerator button’ for production.” Luo Qiming said when talking about the development of high-end polyolefin varieties.
POE is one of the lowest density materials in synthetic materials, and is a key core material for the preparation of a new generation of photovoltaic film. Sinopec, which started to explore POE industrialization technology 20 years ago, is now reaping the benefits. The reporter learned that in the just concluded 35th China International Rubber and Plastic Exhibition, Sinopec released a series of new products including POE elastomer, Sinopec became the first domestic technology patent provider with POE complete set of independent intellectual property rights.
At the same time, Wanhua Chemical and others also have the conditions for industrialization of POE. Data show that as of March 2023, the domestic production capacity planned to under construction in China has reached 2.1 million tons. In the next 2 to 3 years, my country is about to usher in the production boom of POE.
With its excellent product performance, UHMWPE has received more attention from petrochemicals and energy companies in recent years. According to the reporter, since July 2022, Daqing Petrochemical, Jiangsu Sturbang, and Shanghai Chemical Research Institute have entered the UHMWPE industry in the form of new production or energy expansion. Among them, the direction of Daqing Petrochemical’s product is mainly lithium battery diaphragm. The product direction of 20,000 tons/year installation in Jiangsu Serbon is also mainly based on lithium battery diaphragm and fiber material. Fiber material, lithium battery diaphragm material and melting spinning resin are the main.
Just in the past March, the UHMWPE device of the 30,000 -ton stasis ring tube of the Shanghai Chemical Research Institute was put into production, marking that my country has achieved major breakthroughs in this world’s first craftsmanship and technology. High fiber and lithium battery diaphragm provide basic resin.
Leading biodegradable material technology
The implementation of the restriction of plastic order adds “a fire” for the development and production of biodegradable materials. According to Luo Qiming, my country has mastered polycolic acid (PGA), polynxyl -bonol (PBS), polyphonal acid -hexyl -bonol (PBAT), polystumin (PLA) , Polybon (PCL), Polycarbonate (PPC), Polycroxy Fatty acid ester (PHA) and other industrial production technologies, cover the main category of biodegradable plastic, and have built the world’s biodegradable plastic varieties. Complete industrial system.
PLA is currently the most degradable materials for research and application. Key technologies have made breakthroughs in China, and can fully compete with imported products. In addition, there are many new varieties of degradable resin for the first time in my country, such as PGA, polytic benzonite dilate (PBST), and the first biodegradable polyester rubber in my country Essence
According to reporters, Shanghai Dong Geng Company has formed independent technology on the legal PGA route of the ethyl ester openings, which can obtain a medical grade PGA; the Beijing University of Chemical Technology’s Advanced Elastic Body Material Research Center breaks through the high -relative molecular mass diversified common polymer rubber The continuous production process has developed a biological substrate to degrade polyester rubber materials and complete the pilot test test of thousands of tons.
New process of synthetic rubber fills the gap
Functional modification of dissolved polystyrene butadiene rubber is a hot topic in the field of dissolved polystyrene butadiene rubber, which can greatly improve the properties of rubber products, but no industrial products have been launched in China. In May 2021, petrochina, Tongji University and Dalian University of Technology jointly developed functional dissolved polystyrene butadiene rubber synthesis technology, and completed the first set of functional dissolved polystyrene butadiene rubber device in Dushanzi Petrochemical in China. The product has been applied in green tire tread rubber.
Neoprene rubber is one of the important strategic materials in national economy and national defense industry. But butadiene production of neoprene rubber process is complicated, the core equipment technology is difficult. Jinjiao Hi-tech (Shanghai) Co., LTD., has cracked this “hard bone”, developed a new process of butadiene neoprene rubber, and completed the pilot test. “Compared with our traditional calcium carbide process, the process can achieve comprehensive surpass in both production cost and product quality.” Luo Qiming said.
The highlights of engineering plastics and special fibers are prominent
The carbon fiber, known as the “King of New Materials”, is an indispensable strategic new material for the national economy and national defense construction. my country has now become the third country that has high -performance carbon fiber technology after Japan and the United States. “my country’s T300 -level carbon fiber has reached the level of similar foreign products; T700 and T800 -level carbon fiber have achieved industrial production; T1000 and M55J -level carbon fiber key technologies have made breakthroughs in key technology, and they have begun to produce.” Luo Qiming said.
High -strength high -profile polytamide fiber has broad application prospects in high -end fields such as aviation, aerospace, electronics, and protection. Beijing University of Chemical Technology has developed high -strength high -profile polytamide fiber production technology, which uses this technology to build the first high -strength high -profile polytamide fiber production line at home and abroad, and form a series of products.
In addition, the phenolic polyford polyford etherone ketone developed by Dalian University of Science and Technology and the Chinese Academy of Sciences Dalian chemicals is also the world’s first, and all industrial devices have been built.
Electronic chemicals progress faster
The rapid rise of the new energy industry has brought electronic chemicals to the development opportunity, and the competition of many domestic enterprises has entered rapid progress to promote electronic chemical technology.
In recent years, my country’s industrial -grade and food -grade phosphate capacity has been surplus, but the key materials for chip production such as ultra -high pure electronic -level phosphate have completely rely on imports. After more than 10 years of unremitting efforts, Xingfa Group’s ultra -high -pure electronic grade phosphate has achieved the level of purity of phosphate from “3 9″ to “9 9″.
Electronic -grade hydrofluoric acid is mainly used for the cleaning and corrosion of integrated circuits and large -scale integrated circuit chips. One of the domestic electronic chemical leaders officially entered the TSMC qualified supplier system in May 2022, and began to look at it. Batch delivery of high -pure electronic chemical materials, which are mainly hydrofluoric acids in semiconductor -grade.
In addition, some wet electronic chemicals developed and produced by Suzhou Jingrui, such as hydrogen peroxide and sulfuric acid, Haohua Gas, nitrogen trifluoride of Sinoship 718 Institute, high purity chlorine gas and hydrogen chloride of Taihe gas, precursor special gas of Jiangsu Jacque, polishing pad of Hubei Dinglong and other electronic chemicals have also met the requirements of advanced process chip manufacturing.
“The development of argon fluoride photoresist for advanced process chips, which is the most difficult, remains a challenge.” Luo Qiming said that although many domestic units respectively from resin monomer, photoinitiator, solvent to photoresist to tackle the whole industry chain, but currently only part of the products into the downstream enterprise testing.
Post time: May-08-2023