Luo Chaoying said: "Armor fragmentation has high requirements for explosives, and in order to achieve the ideal armor fragmentation effect, it is necessary to use explosives with great intensity."

Su Mao asked, "Then the existing explosives in our machine bureau are not strong enough?" ”

Luo Chaoying said: "The intensity I am talking about, not the meaning of violence, this violent, is a parameter to measure the explosive, usually used to measure the ability of the explosive to smash the contact, this fierceness depends on the pressure of the product generated when the explosive explodes, the speed of the detonation wave propagation. ”

Luo Chaoying said: "Let's take a look at the current situation of the Machine Bureau, the Machine Bureau is now able to produce four kinds of gunpowder, black powder, that is, black powder; Chestnut medicine, that is, picric acid explosives; Cotton medicine, which is the nitrocellulose after putting cotton into a mixture of sulfuric acid and nitric acid, is also a kind of explosive with good vigour; There is also smokeless ammunition, that is, a propellant with nitroglycerin as the main raw material, which is not considered explosive, and these explosives are not strong enough to destroy the Japanese bunker with armor fragmentation shells. ”

Lin Yuan thought for a while and said, "Then let's make explosives ourselves, and let's make Black Suojin!" ”

Luo Chaoying smiled: "I can't help you with this, although the gun design also includes ammunition design, but it does not include how to make explosives." ”

Lin Yuan smiled: "Leave this to me." ”

Due to the different explosives mixed with different types of elemental explosives, in the modern army, different types of bombs have different requirements for explosives, for example: underwater explosives hope that the explosives have as much functional force as possible, in order to promote the water to produce the greatest damage, and armor fragmentation shells hope that the explosives can provide the maximum detonation speed and detonation pressure, so in modern military explosives are mixed explosives based on elemental explosives.

Black Sorkin is the basic component of most modern mixed explosives, such as the famous U.S. Army C4 explosives, which is composed of Black Sorkin as the main ingredient, plus a sense of agent and adhesive, etc., in the elemental explosives, the explosive energy of Black Sorkin is higher than other explosives, second only to Octokin, because the cost of Octokin is much higher than that of Okokin, so the application range of Blacksokin is far wider than Octokin, on the whole, Hackokin is a veritable king of explosives.

However, as in many fields, the best things are often not the most well-known, for example, when it comes to explosives, everyone knows that the Tao is just TNT.

Su Mao asked, "My lord, what kind of black and gold are you talking about, and what do you need to use to make it?" ”

Lin Yuan said: "I'll give you a few drawings in a while, and you can build the machine for the chemical reaction, and give me the raw materials for the reaction." ”

The word "chemistry" comes from the late Qing Dynasty, so when Lin Yuan said "chemical reaction", Su Mao was not a little confused, he said: "It's good, I will set aside the best equipment and craftsmen, and use the shortest time to build the machines needed for the reaction." ”

Lin Yuan said again: "I know that there is a factory in the Langdao Machinery Bureau that is making nitric acid, which is what you call nitrate water, prepare some more concentrated nitric acid for me, by the way, and send someone to buy a batch of good candles back." ”

Although Su Mao didn't know what Lin Yuan wanted him to buy, he still nodded and agreed.

It can be made by direct nitration of urotropine and concentrated nitric acid, and it has the word "black" in its name, but it is white. Its invention waited until 1899, in that year, a British scientist named Henning accidentally got a white solid, he named it urotropine, then he mixed urotropine with various acids to study its properties, when treated with nitric acid, obtained a white powdery crystal, because its molecule is hexagonal, so he named it "hexogen", Chinese transliterated is "black sokin", .

Lin Yuan thought to himself: "With concentrated nitric acid, where can I get urotropine?" He silently came up with a plan, he borrowed a cotton robe covered with silk, and when he put it on, he looked like a broad boy.

He brought a dead bird, put it in a cage, carried it, and walked on the road, attracting passers-by to speculate about what was in his cage and what was in it to contain a dead bird.

Lin Yuan walked to the British Concession in Tianjin, the so-called "Concession" can be regarded as a country within a country, in the British Concession, the Qing government had no jurisdiction, and this concession became a transit point for British merchants to buy and sell goods to China.

When Lin Yuan entered the concession, he came to the largest bar in the concession, and he knew that many businessmen were in the bar on weekdays, chatting with people to seek business opportunities.

Lin Yuan dressed up as a broad young man, and the British knew that the broad young people of the Qing Kingdom were rich and brainless, so when the businessmen inside saw him, they all held back their strength and slaughtered him.

As soon as Lin Yuan sat down, a pot-bellied Englishman walked over and asked in English accent, "Have you eaten?" ”

In the way Chinese greet people, this is probably at the top of the list, Lin Yuan said with a big grin: "I can't eat when I see troubles!" ”

When the Englishman heard this, he felt that the opportunity had come, and smiled: "My dear friend, what can I help you, we have the best Fu Shou ointment, take a sip, and you will have no troubles." ”

Lin Yuan pointed to the cage and said sadly: "See, my baby, it's dead, but it's a pity that it will rot in a few days, and I'll never see it again." ”

The Englishman pointed to the bar and smiled, "If you see that redhead, he might be able to help you." With that, the Englishman felt that there was no oil or water to fish, so he turned and left.

Lin Yuan walked over and heard the redhead say to the bartender behind the bar: "Why can't you give me another glass of Bloody Mary today, I'm not without money, wait until I sell the goods......

The bartender smiled: "Our boss won't allow you to take credit anymore, and you can buy a bar when your goods are sold." ”

Lin Yuan took out a few pounds, put them on the bar, and said with a smile in English: "I invite this gentleman to drink Bloody Mary." ”

The red-haired looked at Lin Yuan gratefully, and said with a smile: "My Qingguo friend, why do you want to help me?" ”

Lin Yuan pointed to the dead bird and said, "I heard that you can keep it from rotting, right?" ”

The redhead laughed, "I have formalin in my hand, if you soak the bird in it, it won't rot." ”

Lin Yuan thought to himself: "Half the success, formalin is formaldehyde solution, with formaldehyde solution, and then find another thing, you can make urotropine." ”

Lin Yuan asked, "How many formalins do you have?" ”

At this time, the bartender had already mixed a glass of Bloody Mary and placed it in front of the redhead, who drank half of it at once and said with a smile: "I have several tons." ”

Lin Yuan asked, "Why do you have so many?" ”

The red-haired smiled: "Our family has been doing business since the Age of Discovery, I don't want to sell some steel or wool to the Qing country, I want to do something that no one has done before, the Qing country has 400 million people, the vast majority of them are farmers, I thought, it must be appropriate to transport fertilizer!" ”

Lin Yuan didn't wait for him to finish telling the story, interrupted him excitedly, and said, "You also have fertilizer?" ”