Aramid fiber composites are one of the focuses of the "12th Five-Year Plan" development in China's specialty fibers. Among them, para-aramid is known as “ace fiberâ€. China has not been able to achieve breakthroughs in key engineering technologies and domestic supply has been dependent on imports. However, in the past 2011, the news of the construction or production of the 10,000-ton para-aramid production line was intensively reported, and people were overwhelmed. Some companies even started to build 10,000-ton production lines; at the same time, the inter-position The application of aramid honeycomb composites in high-speed rail, aviation and other high-end fields also began to accelerate. The aramid fiber industry has begun to make efforts at both ends of production and application.
As far as para-aramid is concerned, its biggest bright spot lies in the breakthrough of key engineering technologies. It is understood that para-aramid was first developed by DuPont in the early 1970s. For a long time, only a few countries such as the United States and Japan have the ability to produce. After decades of research, researchers in our country have finally achieved a breakthrough in the key engineering technology of para-aramid, making it possible for foreign countries to become a monopoly on this industry for 40 years.
On June 13, 2011, Yantai Spandex Co., Ltd., China's largest specialty fiber production base (now renamed as Yantai Taihe New Material Co., Ltd.) announced that the company will undertake the national “863†plan key project—an annual output of 1,000 The ton para-aramid industrialization project was successfully put into production and the products were officially listed. The total investment of the project is 250 million yuan. The project started construction in October 2009. On May 30, 2011, it successfully produced the first full para-aramid fiber roll.
According to the reporter's understanding, there are still many domestic-scale para-aramid production lines with scales of 1,000 tons or above currently under construction.
According to Liu Zhaofeng, general manager of the aramid project of Suzhou Zhaoda Special Fiber Technology Co., Ltd., they developed a key technology for the industrialization of para-aramid with completely independent intellectual property rights, and also launched the high-tech of 1,000-ton para-aramid fiber. Industrialization project. The first phase of an annual output of 500 tons of para-aramid production line has been completed and put into operation in Haishu Town, Changshu City. The second-phase project with an annual output of 1,000 tons of para-aramid has entered the stage of full installation.
As early as 2008, Sinopec Yizheng Chemical Fibre Co., Ltd. produced an annual output of 3,000 tons of para-aramid project and conducted an environmental assessment public announcement, revealing that its main project includes an annual output of 3,000 tons of poly-p-phenylene terephthalamide (PPTA) devices. , An annual output of 3,000 tons of para-aramid filament spinning device, the device is located in Yizheng City, Jiangsu Province, the total investment of 1.1 billion yuan, the construction period of 2009 to 2012 years. In March 2011, the company's technology package for the 1,000-ton para-aramid fiber project passed the review of the technology package review committee headed by Academician Cao Xianghong, a senior advisor to China Petrochemical Corporation, and will launch a feasibility study report, striving to build a kiloton. Para-aramid production line.
Shenma Group's para-aramid fiber industrialization and R&D project office (Saale Project Office) designed and built its own 500 tons of continuous production process test line with an annual output of 2010. It has achieved continuous operation across the board and produced qualified products. The group will use this industrialization technology to build a polymerization and spinning production facility with an annual output of 1,000 tons.
At the time when the para-aramid 10,000-ton device was being built, the construction of the 10,000-ton device was quietly kicked off. In December 2011, China National Chemical Industry Group China Blue Chenguang Chemical Research Institute revealed that they have initiated the engineering research on the 10000-ton para-aramid device and are actively preparing for the production of a para-aramid production line with an annual output of 10,000 tons and the production of aramid composites. Device. In early May 2011, with 16 core patented technologies, the company successfully trial production of a 1,000-tonne para-aramid production facility with independent intellectual property rights in Chengdu. The first roll of para-aramid was successfully rolled out.
On October 8, 2011, Shanghai Zhouhan Fiber Material Technology Co., Ltd. also announced that its project of annual production of 12,000 tons of aramid fiber with an investment of 850 million yuan was formally settled in Yiling District, Yichang City, Hubei Province.
If the biggest bright spot for para-aramid in 2011 is the production of 1,000-ton devices, then for meta-aramid, the most eye-catching in 2011 is the application and promotion in the high-end areas.
The meta-aramid honeycomb composite material not only has the excellent characteristics of fire-retardant insulation, anti-corrosion and environmental protection, but also has high lightness and strength, and its unit mass strength is 9 times that of high-quality steel. With the opening of low-flying flights and the rapid development of large aircraft and high-speed rail projects, China's meta-aramid paper honeycomb structure material ushered in historic opportunities, and aluminum honeycomb and other traditional metal materials are expected to be quickly replaced by new aramid paper honeycomb structural composite materials. .
In the application of high-speed rail, the meta-aramid honeycomb material has a very obvious energy-saving effect on high-speed trains, and it can also greatly reduce noise. Changchun Bus Factory Alstom EMU recommends the use of aramid paper honeycomb as a sandwich construction material for high-speed trains. Yantai Spandex participated in the research and development of high-speed rail projects. The high-speed train aramid honeycomb core materials developed in cooperation with downstream customers have been used in batch applications on domestic high-speed trains.
In aircraft manufacturing, domestic aramid paper for honeycomb core materials will be used in batch applications. In April 2011, the aramid honeycomb composites of Yichang and Daly Composites Co., Ltd. successfully went offline, and domestic aircraft manufacturers such as China Southern Airlines, Hafei and Xifei witnessed the official production of this aviation composite material production base. The base will provide manufacturing materials for R&D-made large aircraft. The total investment of Dalit Aramid Honeycomb Composites project is 133 million yuan, and annual production of aramid honeycomb is 480,000 square meters. In May 2012, after the company completed the second phase of investment, the average annual output value will reach 1.2 billion yuan.
In July 2011, the meta-aramid paper used for aviation grade honeycomb core material developed by Yantai Spandex's subsidiary Mersada Specialty Paper Co., Ltd. passed the technical appraisal organized by China Aviation Industry Corporation. Experts believe that its physical and mechanical properties meet relevant technical requirements. The honeycomb structure materials produced have undergone rigorous verification and test flight assessment, and can meet the special requirements for processing and use in the aviation sector. The Mesquite company will also become a supplier of China's aviation industry. .
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