Chapter 1254: Past glory

When Tan Zhenhua found Principal Chen Jianyuan with these results, Principal Chen could not have imagined that Tan Zhenhua actually managed such a complicated thing in such a short time.
Microporous membranes are extremely versatile and are important components in gas filtration and liquid phase separation. The water purifier installed in the homes of readers and friends is a typical application of microporous membranes. In industry, it is used in sewage treatment, seawater desalination, All aspects of medicine and health play an irreplaceable role.
However, such a product that is commonplace now has a very high technical content. First, you must either directly draw a film with a surface roughness of micrometers or even nanometers, or draw it into very fine fibers and then pass through weaving or thermal bonding. It is the first step to make a membrane with the method of and. After this step, you have to do post-processing for it according to different uses. In view of the different properties of materials for different uses, the requirements for the size of the micropores It is also different, so weaving, bonding or stretching are all common processes. After that, coating, heat treatment and other indispensable processes are required. These processes have high requirements on production technology, process and equipment. To make micro- or even nano-scale micro-pores in the polymer film, it is necessary to ensure that the size of these holes is approximately the same and the distribution is even. It is also necessary to ensure that these holes will not easily change their properties under certain environmental conditions. When the conditions are met, the traits must be changed again-just think about it, this is not a simple matter.
To make a digression, in fact, everyone’s ears have been hearing calluses. The first hot spring of 2020 is a mask that is not one of the first hot products in the spring of 2020. Its core material is "melt blown cloth". Broadly speaking, it is a kind of polymer micro Porous material, it is made of polypropylene (PP) fiber by "hot bonding" (non-woven fabric manufacturing method), the fiber diameter is about 0.5~1 microns, the surface area is large, and the porosity is high (≥75%) , Low resistance, high efficiency, high dust holding capacity, so it can prevent viruses or bacteria from invading the respiratory tract.
Microporous membranes are so important. However, in 1987, China had almost no production capacity. This was limited by China's overall chemical machinery manufacturing capacity. For this reason, when Wang Jishan proposed the standard requirements for lithium membranes After that, no company across the country dared to take this job.
The "medical mask raw material production line" that Tan Zhenhua obtained from the country this time is like lighting up a beacon in the dark. On the one hand, it solves the real polymer microporous membrane production problem, and on the other hand, it digests and absorbs the technology. , Also pointed out a development direction for China's chemical machinery industry in this field.
As mentioned in the previous article, China has never lacked outstanding scientists and engineers. These people do not lack the spirit of bearing hardships and stand hard work. They have been quietly accumulating knowledge and abilities in their respective fields. What they lack is actually even more. Broad horizons and opportunities for in-depth exchanges with international counterparts.
Just like the airborne PD radar, Benfang is undoubtedly the leader in this field in China, but the accumulation of years of accumulation and transformation into real engineering application results has never been achieved. If he continues to do this, with his ability and insight, maybe After all, a breakthrough will be made one day, but how long will it take? No one can predict, no one can tell. And when he saw the EL/M-2021B of IAI, the doubts that had haunted him for many years suddenly disappeared. Tan Zhenhua can say responsibly that the radar now installed on the "Flying Leopard" fighter plane, Its performance far exceeds the EL/M-2021B introduced in the original 4014!
Of course, the "cheat book" contributed by Xiao Tan Tan and the new generation of CPU he provided also made great contributions to this.
Here needs a special explanation. The computing core in the radar, that is, the computing power of the CPU, has a crucial impact on the overall performance of the radar, because the analysis of the signal is actually a mathematical problem. In this process, the CPU needs to do a lot of The Fourier transform calculations of the 1980s and the 1990s, the radars of the 1980s and the 1990s, all used general-purpose CPUs to perform these calculations. The radars of the late 1990s were one step closer and used DSP chips to perform this work. DSP chips can actually Roughly understood as a special kind of CPU, it is a chip specially developed for solving digital signal processing algorithms, and it is more targeted because of higher efficiency.
Back to the topic, Tan Zhenhua brought back this technology. Of course, Chen Jianyuan has to fulfill his original promise, come forward to mobilize the Ministry of Chemical Industry, and mobilize experts across the country to go all out for a concentrated battle, and strive to achieve this in the shortest time. The technology has been thoroughly digested and absorbed and turned into China's own technical reserves and capabilities. If possible, it will be further developed on its basis.
Well, of course, it is not feasible for Tan Zhenhua to take the benefits without paying, so these experts must work with the engineers and technicians sent by "Dongran Chemical" to help Tan Zhenhua install the production line in "Ningdu Petrochemical". The installation and debugging are completed and it can be put into production.
Everyone should remember, "Ningdu Petrochemical", Tan Zhenhua, a large-stock company, has a major product called polypropylene.
But to be honest, where does the Ministry of Chemical Industry need to be persuaded? This kind of pie-in-the-sky thing is something you can never dream of!
It’s refreshing to work with Mr. Tan. From time to time, you can pick up good things from him, and it doesn’t cost you money. It’s still not settled after a long time... Mr. Tan, just say, how much do you want The number of experts? No, how many experts can you give?
Tan Zhenhua said that I plan to build an "expert building" in Ningdu Petrochemical Company, and I will build as much building as I can see for you...
In addition, can we approve another national-level "Polymer Microporous Membrane Laboratory" brand so that our building can look taller?
Then, Mr. Tan, don't just build one building. I will give you a whole plot next to Ningdu Petrochemical. You can build a chemical park...
The vigorous construction of the park soon began. Seeing the construction machinery on the construction site happily spitting black smoke and busy, Tan Zhenhua was extremely satisfied. This is the scene he likes and the life he yearns for!
What he didn’t know was that because of the instigation of his little wings, the lithium membrane, the most technologically advanced commanding height in the field of lithium-ion secondary batteries, had already set foot in the footsteps of Huaxia people 30 years in advance. It was not until the mid-1990s that Huaxia finally lit up the technological tree of polymer microporous membranes and realized pilot production at the turn of the century; however, in the entire field of microporous membranes, lithium membranes with higher technical requirements are still facing Countless problems to be solved.
In 2000, China’s annual output of lithium-ion rechargeable batteries was only 35 million, and they were basically copycat products that were not authorized by patents. Therefore, exports were extremely limited. Most manufacturers had to stay at home and fight each other. The material lithium membrane is all dependent on imports, but the annual output of the neighboring Japanese country is as high as 500 million, occupying more than 90% of the global market share!
The domestic lithium membrane finally made a breakthrough after 2008.
Of course, according to the so-called "the technology mastered by Huaxia cannot be called core technology", the lithium membrane market monopolized by the three giants of Asahi Kasei, Tonen Chemical and Celgard of the United States also began to collapse from that year. In 2017, when Tan Zhenhua was reborn, Huaxia Enterprises had already accounted for more than 50% of the market size (reached 60% in 2018, the above is historical data, the author’s note). The giants of the past had nothing but gnashing their teeth in secret. I’m afraid it’s just to move a rocking chair and recall the glory of the past in the sunset...
what? Do you still want to remember the glory of the past?
Asked Master Tan Er, did he agree?