Issue 44/2015 - Key Technology of Dry Spun Polyimide Fiber Awarded

Recently, the 2015 Hong Kong Sangma Foundation Award Ceremony was held in Zhejiang Sci-Tech University, and the "Key Technology and Complete Equipment Research and Development of Dry Spun Polyimide Fiber Engineering" of the School of Materials of Donghua University won the special prize of the 2015 Hong Kong Sangma Foundation Textile Technology Award
.

The achievement formed a polyimide fiber preparation route with independent intellectual property rights, and built a 1,000-ton production line; The polyimide fiber bag filter made by this technology can efficiently help chimneys, furnaces and other high-temperature dust removal, and the innovation of its fiber spinning preparation method and production equipment has broken the monopoly and blockade of polyimide fibers abroad, and helped promote the upgrading
of China's high-performance fiber industry.

The research team of the School of Materials Science of Donghua University solved the problem of the stability of the spinning chemical structure by adding comonomers to the fiber spinning processing process, and successfully industrialized
the technology.
The world's first dry polyimide fiber 1,000-ton production line built with this technology has been completed and put into production
.
As a result, it not only overcomes the key technologies of process integration, equipment and efficient matching of such fiber production lines, but also helps Sinoma Technology Co.
, Ltd.
, Shanghai Borg Industrial Fabric Co.
, Ltd.
and many other enterprises to contribute
to dust and haze reduction, energy conservation and emission reduction in chimneys and furnaces.

In industrial production, a large amount of high-temperature exhaust gas dust will be discharged
from chimneys and furnaces.
The bag filter made of polyimide fiber is set on the chimney, which can not only effectively capture dust and remove dust, but also withstand the "smoke fire"
of high temperature, high humidity and highly corrosive gas for many years.
In the field of high temperature dust removal, bag dust collector made of polyimide fiber has the advantages of high dust removal efficiency, wide working conditions, will not cause secondary pollution, etc.
, and is more and more widely used at home and abroad, and about 80% of the dust removal equipment currently uses polyimide fiber
.

Polyimide fiber fabric not only has excellent dust capture and dust removal performance, but also has excellent and stable high temperature resistance, which can be used for a long time under extremely harsh environmental conditions such as high temperature, high humidity and high corrosive gases, and is useful in high-temperature dust removal, special protection, lightweight cable sheath for aerospace vehicles and rockets, as well as large-diameter unfolded satellite dish tension cables, reinforced woven materials and protective clothing for space vehicle capsule materials
。 (Ren)