Editor's note
In order to welcome the 75th anniversary of the founding of the People's Republic of China and the 75th anniversary of the founding of the Chinese Academy of Sciences, starting from today, "China Science News" has opened a column of "The Road to Self-reliance and Self-improvement in Science and Technology".
Text |China Science Daily reporter Ni Sijie
See you if you don't succeed! ”
This is a scene that happened in 2005.
At that time, scientists from a number of research institutes of the Chinese Academy of Sciences.
was called together for a "Hongmen Banquet".
What they are discussing is:
Aerospace-grade T300 carbon fiber.
It's a project about ***.
Carbon fiber is a lightweight, high-strength material.
Known as "Black **".
It is indispensable in the fields of aviation, aerospace and industrial manufacturing.
At the turn of the century, carbon fiber was used in China's cutting-edge fields.
*Nervous,**skyrocketing.
National important cutting-edge equipment "no rice cooking".
Encountering a serious threat.
Carbon fiber. Shanxi Institute of Coal Chemistry, Chinese Academy of Sciences (hereinafter referred to as Shanxi Institute of Coal Chemistry).
It is the earliest institution in China to study carbon fiber.
Spring 2005.
They received an important task from the hospital
Must be by 30 June 2008.
Produce space-grade T300 carbon fiber that meets the needs of the application.
It's almost an impossible task.
Japan's Toray company from the development of the precursor to the production of T300
It took about 5 years.
Improve, refine and improve quality.
It took about 10 years.
Time left for Chinese scientists.
Only 3 years. 'It's better to do it and die' than 'don't do it and die'. ”
As the leader of carbon fiber technology of Shanxi Coal Chemical Institute.
Lu Chunxiang put his heart sideways.
Make a "military order".
Subsequently, the state set up a leading group for tackling key problems.
The Chinese Academy of Sciences is a member unit.
At the request of the party group of the hospital, a number of affiliated units of the hospital have worked together to tackle key problems
Shanxi Coal Chemical Institute took the lead in the development of production lines as a whole.
The Institute of Chemistry develops oil agents.
Shanghai Institute of Organic Chemistry and Changchun Institute of Applied Chemistry developed sizing agent.
This is where the opening scene takes place.
Scientists from the institute were called.
Their task is to gnaw this "hard bone".
The board house where Lu Chunxiang lives in the Taiyuan Xiaodian Pilot Base.
Taiyuan and Yangzhou have become two important positions for tackling key problems.
Taiyuan does the pilot test, and Yangzhou does the amplification.
The main difficulty of the pilot test lies in the precursor engineering test line.
The difficulty of engineering scale-up is even more.
30 April 2006, at 5 p.m.
The pilot test line in Taiyuan produced precursors.
No one stopped to celebrate.
Because they know that ensuring precursor stability is key.
After half a year, nearly 100 kettles were tested.
In June 2007, the products reached the basic index of T300.
Still no one stopped to celebrate.
They were going to Yangzhou next.
Construction of precursor and oxidation carbonization lines with larger production capacity.
The scientific research team set up equipment in Yangzhou.
Bigger means harder.
Large-capacity polymerization kettle.
It is the problem that makes the research team scratch their heads the most.
The performance of the precursor should be high, just like boiling a pot of porridge.
Only high-precision control.
In order to ensure that each grain of "rice" in the pot is cooked consistently.
Lv Chunxiang subversively adopted a new polymerization process.
And began to design a special polymerization kettle for it.
This is a technology that has never been seen before in the country.
But there are also unprecedented challenges.
The larger the capacity of the polymerization kettle, the more difficult it is to control.
The scientific research team communicates construction drawings.
Early in the morning of May 25, 2008.
Feeding of large-capacity polymerization kettle.
Lu Chunxiang didn't close his eyes for a day and a night.
Early in the morning of the 26th, there was finally good news
Smooth control. But everyone's hearts can't be calm.
At this point, there is only one month left before the deadline.
And the aerospace grade T300 carbon fiber.
More than 20 indicators must be met.
Can the performance test pass?
Batches of white silk are transported to the oxidation carbonization line.
After turning into black silk, it is sent to the inspection department for testing.
The hour hand keeps turning.
Everyone's heart is like being put into a pan of oil.
Lv Chunxiang cut the tow before the winding station of Yangzhou oxide carbonization line.
Early one morning in June 2008.
The latest test report is released.
The performance indicators of carbon fiber are all qualified.
For several days in a row. More performance test reports are out.
The second, third, and fourth batches ......
There is almost no difference in performance metrics.
Everyone was very excited.
Steady! 30 June 2008.
deadlines required by the state.
Shanxi Coal Chemical Institute sent the first batch of products to the user units.
Meet all the requirements.
On this day, Japan became the second country after Japan and the United States.
The third country to produce its own space-grade carbon fiber.
The birth of this production line.
It has laid the foundation for the localization of higher performance carbon fiber in China.
Special carbon fiber of Shanxi Coal Chemical Institute.
Many of those who witnessed it remember.
On that day, just as everyone was ready to celebrate.
A researcher locks himself in an empty conference room.
I cried a lot.
The pressure of 3 years is finally vented.
Since 2005, the "Military Order" has been established
Meeting national needs by 2008.
3 years of research. Countless batches of white precursor turned into black carbon fiber.
And the head of the research team researchers.
A lot of hair has been boiled from black to white.
Now, 16 years later.
They often think of the days when carbon fiber was stable.
It was a foggy morning.
Everyone walked out of the factory after they were busy.
It was found that the thick fog that had shrouded the night had lifted.
The sun was bright and warm.
China Science Daily published the full text:
They have made a breakthrough for China's high-performance carbon fiber