"Minety 40 degrees Celsius...minusty 60 degrees Celsius..." Ding Baoguo's eyes straightened and muttered to himself as if he was stupid. As an expert in the domestic rubber industry, he knew too well what these two numbers mean.

After a long time, Ding Baoguo smiled bitterly and said to Lin Hongfei, "Brother, I'm not hiding it. If you really invest in money, you won't be able to do it. But have you calculated that how much money you have to invest in R&D alone? At this stage, the minimum temperature of a small-scale industrial cold storage is only minus 20 degrees Celsius, but the construction cost of such a small-scale cold storage is at least one million. At this stage, the domestic market basically does not have the ability to build an ultra-low temperature laboratory of minus 60 degrees Celsius. Just building such a laboratory will definitely not be able to obtain without 5 million. This is not considered R&D investment."

"Although I haven't calculated carefully, based on my experience, I estimate that if I want to create rubber tracks that can ensure performance at extremely low temperatures of minus 60 degrees Celsius, I will need at least 40 to 60 million scientific research investment. With so much scientific research investment, how many tracks have to be sold to make it back? In addition, if there is such a large market, we have to ask a question mark..." Speaking of this, Ding Baoguo smiled bitterly and shook his head, "Brother, please listen to my advice, don't do this project, there is really such a big market, brother, I will help you with whatever I say, but how big can this market be?"

Lin Hongfei smiled bitterly, and did not take on Ding Baoguo's words for a while. After a long silence, Lin Hongfei said, "I also know that this is a bit difficult. Brother Ding, how difficult is it to build a rubber track that can adapt to the low temperature of about minus 30 degrees Celsius, and steel rubber tracks used on tanks and armored vehicles?"

"This... I'm really hard to say," Ding Baoguo also smiled bitterly in the face of Lin Hongfei's problem, spread his hands and said, "This is considered the national defense field, and the difference is quite big with our civilian field. However, I guess there is no hope for it without a tens of millions or hundreds of millions of investments, and no seven or eight years or even ten years."

"Then Brother Ding, tell me, what is the difficulty of this rubber crawler?"

"In this way, let me tell you about this rubber-mounted track. It is the difficulty of steel tracked rubber-mounted tracks used on tanks and armored vehicles." Ding Bao Guodao.

"Okay." Lin Hongfei nodded without hesitation. He also needed to have a detailed understanding of the difficulty of this project so that he could make an accurate judgment.

"Just let's talk about this kind of rubber hanger, the reason is actually quite simple. It is to use glue to paste a rubber plate on the steel track. This rubber plate is on the steel track. It is like a bicycle rim installed. It can not only absorb shock and reduce noise, but also extend the service life of the track... You should know that the tracks of tanks and armored vehicles have service life, and are not long, but after hanging the rubber plate, the rubber plate directly contacts the ground, not steel tracks. In this way, I guess that the life of a track can be at least three or four times longer than before."

"This principle is very simple, but it will be difficult to turn it from truth to fact. First of all, the requirements for the track itself in rubber-hanging tracks are very high. Rubber cannot be too thin, as if it is too thin, it will not act as a buffer; the rubber cannot be too thick, if it is too thick, it will affect the travel of the tank. At the same time, it also needs appropriate glue to tightly attach the rubber plate and the steel track to ensure that it will not fall off during driving."

"This is just the first level of the problem. The next step is to choose the right rubber material and develop the right rubber formula. Any kind of rubber track must meet the requirements of all-terrain use. Let me give you an example. Tank vehicles must drive on the Gobi covered with pebbles and sharp angular stones. Then the rubber on the track must be puncture-resistant to avoid damage to the track. For example, in the three cold northeastern provinces, the moving tanks will face a low temperature of more than ten degrees below zero. If the rubber is not resistant to low temperatures, it will cause deformation and fall off. In the wet south, the rubber tracks must also have strong grip to facilitate driving on muddy mountain roads;"

"In addition, rubber-hanging tracks also require rubber to have the characteristics of 'low heat generation'. For example, when we drive, the road surface in summer will sometimes burst due to high temperatures, so our rubber-hanging tracks must have the characteristics of low heat generation. Speaking of which, Russia is very good, and there is always low temperatures. Their rubber-hanging tracks only need to be cold-resistant, and they don't need to consider the rubber-hanging tracks as we do in our country;"

"This is the second step, and the third step is even more difficult. It is to develop the precise processing of rubber materials. To add a certain amount of rubber raw materials, it must be accurate. To what extent should it be? To be accurate to the ingredients to be added to a ton of raw materials, it must be accurate to grams. If one gram or one gram less is added to the ingredients, the batch of materials will be wasted. The things produced cannot meet the requirements at all, and it must be ensured that the mixing is even, and the performance of uneven mixing cannot be guaranteed,"

"This is just rubber material. In addition to this, there should also be lining material in the middle, just like there is a cord in the middle of the tire and the heavy-duty tires used in trucks are embedded with steel wire. This lining material must also be studied."

"This is just rubber tracks. If they are rubber tracks, it's like this in front of you," said Ding Baoguo kicked the rubber tracks on dt-10pm in front of you, "it's even more difficult! At this stage, our country can't even use rubber tracks for tanks and armored vehicles. It can only use rubber tracks on hard paved roads such as asphalt and cement. There is no chance of using "all-terrain rubber tracks" that can be used on dirt roads and terrains without roads."

"The rubber plate used by our country to bring tanks and armored vehicles on military parades and on some other occasions cannot be considered a real rubber track. At best, it can only be considered a temporary emergency. It does not damage the ground and does not need to go to the Gobi Desert. Do you want this rubber track to run on the dirt road? At most, it can run dozens of kilometers, and the rubber sheet will fall off immediately. Even steel rubber tracks are like this, let alone rubber tracks."

Speaking of this, Ding Baoguo advised with great sincerity, "Brother Hongfei, brother, I would like to advise you, if you want to do this, you don't have to think about it without the hard work of seven or eight years or even ten years, and without the investment of tens of millions or even hundreds of millions of dollars. You don't have to think about it. The country is okay to play with it. We should let it go if we run a business."

After hearing what Ding Baoguo said, Lin Hongfei nodded.

Lin Hongfei is also engaged in research and technology. Although his major is not in the rubber industry, the intersection between the automobile industry and the rubber industry is very deep. It is not too much to say that he is half a theory expert in rubber discipline. Naturally, he knows that what Ding Baoguo said is correct, not only is it true, but he even underestimates to a considerable extent.

"I know one thing about the lining materials added to the rubber track and rubber track. I am not very clear about the situation in Russia. However, in the United States, both steel rubber tracks and rubber tracks use para-aramid materials, which are commonly known as Kevlar material. Kevlar body armor made by Americans have this para-aramid material. As far as I know, the DuPont Group, Monsanto and Brad Regan are all doing this." Lin Hongfei said, obviously, his words meant to tell Ding Baoguo that he did not mean to give up.

"Kevlar Materials?" Ding Baoguo was stunned for a moment, "As far as I know, our country has not started researching Kevlar Materials at all," said Ding Baoguo, shaking his head and said bitterly, "Of course, maybe he started research, but it was not announced for the need for confidentiality, but for us, this is different? It is not the same as none!"

"Hongfei, after listening to my brother's advice, this thing is simply a bottomless pit. No matter how much money you have, you can fill it in... Of course, if you plan to throw the money you earn every year, you will definitely be able to pile up the appropriate rubber materials with money. But is this worth it? This kind of thing is a project that can only be played by the country and is qualified to play. We should not mix it in private, as we can't mix it."

Lin Hongfei smiled and did not answer immediately, but asked Ding Baoguo, "Brother Ding, how much do you know about the material like aramid?"

"Ah..." Ding Baoguo didn't expect Lin Hongfei to ask this question. He was stunned for a moment. He touched his head embarrassedly and said, "I don't know much. Apart from the bulletproof vest you mentioned, it seems that the helmets used by the US and European troops are made of Kevlar materials now, right?"

At the same time, Ding Baoguo was quite puzzled. He just wanted to do his own tires by making rubber. What do you know so much about it?

"Well, not only bulletproof vests and bulletproof helmets, but also many applications on aircraft. A large number of Kevlars were used on the Apache armed helicopters that were very popular in the Gulf War. Well, it is para-aramid material. This thing has a specific strength and modulus several times higher than steel wire, and has good thermal stability, flame retardancy, electrical insulation, corrosion resistance and radiation resistance. It is widely used and can be used in various fields of national economy such as military protection, aerospace, high-speed railways, communications, construction, automobiles, etc. It is not only one of the best high-performance fiber materials in the world at present, but also one of the strategic national defense materials. I can assert that in the next 10 years, Kevlar materials will definitely become the world's largest and most widely used high-performance fibers, and there is huge demand for national defense construction."

Speaking of this, Lin Hongfei suddenly turned his head and stared at Ding Baoguo with bright eyes, "Brother Ding, you said, it would be fine if I didn't know the prospect of this thing. Since I knew, can I give up? No matter how much I invest, I must make this thing out!"

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ps: Today is still the fourth update. In addition to the third update, there is another update that is 2/27, which is the second update of the 27 updates that you owe (to be continued) (please search for Astronomy, novels are better and faster!
Chapter completed!