Chapter 751: Is the chain off at a critical moment?

Jinling Advanced Institute, Materials Science Laboratory.
Standing next to an optical microscope, Lu Zhou slightly turned the fine quasi-focus helix and observed the carbon nanotube fibers on the glass slide.
About four or five minutes later, Lu Zhou's eyes left his eyepieces and looked at Yang Xu, who was standing beside him.
"Can't make it longer?"
Yang Xu shook his head.
"At best it can be done like this."
According to the data observed under the microscope, the shortest sample is only 5-10 μm, and the longer one can reach 2 mm, but the number is few.
Desperately, even carbon nanotube samples grown to 2mm. Compared to the carbon nanotube filaments that are as smooth and silky as the hair on that piece of cloth, the sample lying on this slide is like a pile of beard scum, or the shaved one. Kind ...
After touching his chin for a while, Lu Zhou said.
"... What about the directional growth technology used in SG-1 superconducting materials? Have you tried it?"
"I have tried all the methods you can think of," Yang Xu shook his head. "The pore size of this high tensile strength carbon nanotube is much smaller than that of SG-1 material, and it is difficult to synthesize it by directional growth ... … And if you take a step back 10,000 steps, even if you can really do it this way, it ’s difficult to accept it in terms of cost?

If it is a superconducting material, it is good, it is used in high-end fields, and it is acceptable if it is not expensive. But if it is just a kind of tensile material that costs so much, it is a bit unnecessary.
Looking at the picks on the microscope with a complex look, Lu Zhou still asked a little unwillingly: "Has no idea at all?"
"That's not the case, there is still a little bit of thought," Yang Xu handed over a report from the side of the experimental table. "According to the feedback from several sets of experimental data, we can improve catalyst The type can effectively improve the proportion of long carbon nanotube molecules in the product. From this property point of view, this type of carbon nanotube molecules with nitrogen-containing groups on the surface is similar to some samples I have done before. Very similar. "
"So we only need to continuously improve the catalyst so that the catalyst remains active during the high temperature growth of the carbon nanotubes. Theoretically, it can increase its length."
For the growth of carbon nanotubes, catalyst deactivation during high temperature growth is an irreversible law, and it is also one of the main reasons for limiting the length of carbon nanotubes.
Therefore, by improving the catalyst and extending its deactivation time, it is indeed a technically feasible and controllable research idea.
After listening to Yang Xu's words, Lu Zhou nodded and said, "... then do what you say, if you have insufficient funds, just tell me."
"You can rest assured that I will never be polite to you when it is short of funds," Yang Xu smiled, and then continued. "Yes, I have to ask you something. Now laboratory preparation The problem has been resolved ... Does a patent need to be registered? "
Lu Zhou thought for a while and said, "Register one of the carbon nanotube samples first, and then prepare the catalyst."
Yang Xu: "What about the paper?"
Lu Zhou: "After the patent is registered, you can consider sorting out the content other than the preparation process and putting it in one area."
Keeping the synthesis process secret, and simply submitting the sample with the surface-modified nitrogen-containing group as an interesting carbon nanotube is also feasible in the field of materials science.
If it can attract more research institutions to participate, it will be a good thing for him.
This is true not only in the material sciences, but also in any field in the academic world. The higher the degree of interest in a question, the more interested research institutions, and the faster the results will be produced.
If you rely on a research institute to build a car behind closed doors and don't exchange opinions with other scholars or research teams, you can't see the results for more than a decade.
"Then you're fine," Yang Xu nodded, and continued, "... right, what name should we give it?"
Without thinking too much, Yang Xu subconsciously asked this sentence.
But as soon as this sentence came out, he regretted it.
It's just that I have asked all the questions. Even if I want to regret it again, it's too late.
I saw Lu Zhou smiled embarrassedly, thought for a while, and said.
"Just call N-1."
There is nothing special about the naming principle, purely considering that the nitrogen-containing modification groups on the surface of this carbon nanotube are too characteristic compared to other carbon nanotube materials, so the name N is simply used to name the series of this material Already.
As for N-1, it is naturally because it is No. 1. If newer similar materials are developed in the future, it can be directly analogized according to the law of 1234.
Although he also considered something like "super tensile carbon nanotubes" or "carbon nanotubes that are 100 times stronger than steel" to describe the material's more appropriate names, but because it is too space-consuming to write, so They dispelled this idea.
Satisfied with his own ability to name, Lu Zhou turned his attention to Yang Xu. He originally intended to ask his opinion, but after seeing that he did not respond for a long time, he hesitated to ask.
"……what happened?"
"Nothing ..." Yang Xu smiled awkwardly and politely, "I just think it's quite your style."
Lu Zhou: "...?"
What do you mean?
Look down on the taste of my name?
Just then, a call suddenly came to Lu Zhou's mobile phone.
Taking out the mobile phone and glanced at, seeing that Director Li called, Lu Zhou and Yang Xu said hello, and then pressed the connection button while walking to the corridor outside the laboratory.
"Hey?"
"it's me."
Listening to Director Li's tone was not right, Lu Zhou didn't have a shudder, and asked the question straight.
"What happened?"
Sure enough, Director Li's next sentence confirmed his bad hunch.
"... there is something wrong with the Hangke Group. The cooling function of the core cabin's cooling system is not enough," he paused for about two or three seconds, and Director Li said gravely. "The launch plan may have to be postponed."
For spacecraft, heat dissipation is a serious problem, and it is also difficult to find out during the design phase. Although the current technology has been able to simulate the total heat output and heat dissipation, this simulation may still deviate from the actual situation for various reasons after all.
For example, the recent GOES-17 satellite in the United States is vulnerable to solar radiation and overheating due to design flaws in the cooling system, which makes it unable to obtain infrared cloud images in a timely and effective manner. At night, it is the same as the blind man. The investment was almost overwhelmed.
In a sense, being able to spot problems on the ground has been quite fortunate. After all, after the spacecraft has been in the sky, it is almost impossible to think about overhaul.
As soon as I heard that there was a problem with the heat dissipation, UU reading www.uukanshu.com Lu Zhou immediately asked: "Can't it be solved by installing a heat sink?"
Director Li said with a heavy voice: "... The problem is not with the heat sink, it is said that it is with the loop heat pipe."
When he heard that the problem was on the loop heat pipe, Lu Zhou suddenly hesitated, realizing that the problem was not easy.
"... Do you mean that the entire loop heat pipe has to be redesigned?"
The sound coming from the other end of the phone brought a bit of bitterness.
"I'm afraid so."
Lu Zhou: "..."
Mom ...
Redo loop heat pipe!
What's the difference between this Nima and the shell of the entire core compartment that was removed and sent back to the furnace?