Of course, Wu Tong didn't let himself have a headache for too long.
She wasn't alone; she already had her own small team, backed by the government. With so many leading figures in domestic mechanical engineering, she doubted they could overcome this challenge if they combined their efforts. If that didn't work, she could simply start over and study mechanical engineering, developing and designing the system herself.
There are always more solutions than problems. The big guys in China have sharp eyes and can deduce the real thing based on toys. They can copy the big thing based on the purchased products and optimize and upgrade them. She is still looking forward to those top experts.
The material model and preparation process design are perfect. The most important thing for her now is to carry out laboratory preparation output, and then test the data, so as to ask the higher-ups to arrange concentrated efforts on the equipment to overcome the problem.
"Teacher, ask Brother Xu and Tao Ran to prepare for the carbon fiber composite material experiment!" Wu Tong dialed in and began to make experimental arrangements. Her staff kept collecting her manuscripts, which needed to be encrypted and brought into the lab. "Please ask Dr. Zhang Qian to meet in my office in ten minutes!"
Zhang Qian's information review was smooth, and he successfully entered Wu Tong's laboratory three days later. He signed a new confidentiality agreement and vaguely learned about Wu Tong's major achievements in materials. He felt doubly honored to be able to join such a top team and had deep respect for Wu Tong.
Before he knew it, Wushen's achievements in mathematics had already made him admire him like a torrent of water. After signing the confidentiality agreement, Zhang Qian became even more determined. From then on, he was a brick under Mr. Wu, and he would be moved wherever he was needed. He worked hard to improve himself, just to not hold Wushen back.
An Wenshu, carrying the manuscript safe and Wu Tong, had just entered the Institute of Materials Science and Engineering under the covert protection of a group of people. Cheng Huanan, accompanied by Ruan Chengxu, Tao Ran, and Zhang Qian, was already waiting at the entrance. Seeing Wu Tong, they could not help but come forward to greet him.
"Wu Tong, any breakthrough?" Wu Tong had told him that his latest goal was to master carbon fiber composite materials. Within two days of saying this, Wu Tong went into seclusion.
Wu Tong's retreat, in the eyes of those in the top research circles who knew his abilities, was a renowned breakthrough. For the ten days since Wu Tong's retreat began, Cheng Huanan had been eagerly anticipating it.
He was very eager to see the progress of China's new materials, but he didn't dare to ask too urgently so as not to bring scientific research pressure to Wu Tong.
"Teacher, we have lived up to your expectations. We have made a breakthrough and designed the material model. The details still need to be verified by experiments!" Wu Tong smiled gently and assuredly at the teacher and reported swiftly.
Although Mr. Cheng was willing to help Wu Tong improve himself and do some auxiliary work, Wu Tong never regarded the old man as an assistant, but as a key figure.
"I will discuss with Dr. Zhang the direction of equipment improvement. Let's start the experiment and conduct material preparation and performance testing!" The performance of the successfully prepared materials can be seen most clearly from the test results. Wu Tong does not need to elaborate on this.
"No problem, the laboratory is fully prepared and waiting for your instructions at any time!" Cheng Huanan assured. At such an important moment, he would definitely cooperate with all his strength and would never fall behind.
"Doctor Zhang, I need you to adjust the high and low temperature carbonization furnace and the wire take-up and pay-off system in the laboratory. The effect I want to achieve is... I need you to cooperate with me in making these adjustments. Is that okay?"
Before preparing for the experiment, parameters must be adjusted based on the institute's existing instruments and pre-ordered small-scale material preparation equipment. Currently, this is just a test, not a large-scale production run. Once the laboratory instruments are adjusted, the experiment can basically be carried out.
"No problem, Mr. Wu, I'll get started!" Zhang Qian agreed promptly. Opportunities come to those who are prepared. After officially joining the company, he just happened to catch the arrival of new equipment in the lab. To better assist the team, he started with the new instrument, gradually gaining a detailed understanding of its performance and structure.
Each of the lab's precision instruments was expensive, so he certainly couldn't disassemble them to play with them. He pieced together as much as he could from the instrument manuals, the internet, and even through conversations with vendors. He didn't have to know the instruments by heart, but he did want to be as familiar with them as possible.
Hard work pays off, and it comes in handy now.
Thanks to Zhang Bo's efforts and Wu Tong's precise parameter requirements, the instruments were adjusted in half a day. With Wu Tong's call to begin, the experimental team began operations. This experiment was led by Wu Tong, with Cheng Huanan as his assistant, and Tao Ran and Ruan Chengxu as key personnel. Zhang Bo provided instrument operation support, while the other personnel stepped aside as backup support.
"Begin, Tao Ran, Brother Xu, prepare polyacrylic..."
The experiment officially began, and several researchers, following Wu Tong's instructions, prepared the precursor silk step by step. The silk began to undergo a pre-oxidation treatment, which transformed the linear molecular chains of the precursor into a heat-resistant ladder-shaped structure. This also served as a carbonization step for the subsequent carbonization process, fixing oxygen and carbon.
"The temperature is maintained uniformly at 242 degrees Celsius!" Wu Tong kept a close eye on the experiment and made precise data adjustments.
This temperature is the optimal pre-oxidation temperature for this material. At 242°C, Zhang Qian overcame difficulties and built a pre-oxidation treatment furnace according to her requirements. The oxygen content rose sharply and a chemical reaction occurred in it.
Eighty minutes later, a series of reactions such as cyclization, oxidation and dehydrogenation occur. During this process, PAN loses a large number of small molecules under chemical reactions and undergoes structural changes.
They checked the required conjugation reaction and the pre-oxidation was successful!
After pre-oxidation, the raw silk becomes further pre-oxidized silk. The color changes from the initial white to light yellow, beige, light brown, dark brown, and finally black.
"The current oxygen content of the pre-oxidized yarn is 8.78%!" After Tao Ran conducted the test, he accurately reported the experimental data.
"Begin the next low-temperature carbonization process!" Wu Tong gave another command. On the workbench, the lab technicians followed the instructions with precision. Wu Tong divided the temperature range between 300-800°C into several intervals. In an airtight environment, he gradually carbonized the pre-oxidized wire, forming the initial turbostratic graphite structure.
"Operate with caution, keep the exhaust port unobstructed, and be careful of waste gas and hot oil!" At this stage, the pre-oxidized wire undergoes thermal decomposition and polycondensation reactions, which will produce a lot of waste gas and tar, which must be removed in time through the exhaust port to ensure the stability of the experiment.
The low-temperature carbonization is gradually completed, followed by high-temperature carbonization of 1400-2000℃. The balanced temperature control will be maintained at around 1800℃, and the chaotic graphite structure will be formed. At this time, the molecular structure has undergone the changes she expected.
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