Zhang Guoan casually handed over another list, which was the material he needed from Da Song. Pen? Interesting? Pavilion wWw. ｂiquge。 ｉｎfo

When he saw silk, cotton and linen, he didn't care, and felt that it was normal, and they couldn't produce this now.

He just asked curiously, and said, "What do you want to do with dozens of loads of grain and flowers, and do you need different regions?" ”

Can Zhang Guoan say that he wants to make nitrocellulose and celluloid?

He won't understand it.

The key to determining whether nitrocellulose can be successfully trial-produced is the nitrogen content of cotton.

If the nitrogen content of cotton is too low, it has to be made into celluloid or prepared paint, and only those with high nitrogen content can be made into nitrocellulose propellant.

In the market of the world, you can't buy cotton with a nitrogen content greater than 10%, but in the time and space of the Great Song Dynasty, it is just that he needs the same experiment, so he needs more cotton produced in the region.

Cotton, where is it different? So Lao Jia's curiosity is justified.

Nitrocellulose cotton is a white fibrous substance, the physical properties are basically the same as cotton, its explosive power is 2~3 times greater than **, and there is no residue after deflagration, and there is no smoke, it is a good thing.

Its manufacturing process is also relatively simple, a mixture of concentrated sulfuric acid and a concentrated nitric acid is enough for twenty minutes to react with high-nitrogen cotton.

But this thing is not easy to save!

As long as the temperature exceeds 40 degrees, it can self-ignite and self-detonate!

Therefore, Zhang Guoan can only consider using the time first and producing first, and there can be no only black fire/medicine mining, the low efficiency is outrageous!

Zhang Guoan also wants to change the nitrate cotton into a single-base propellant, and if necessary, get the double-base propellant out!

There are generally two types of propellants in conventional bullets according to their composition: single-base propellant and bi-base propellant.

Single-base propellant is nitrocellulose as the energy-based propellant, under the action of ethylene glycol solvent, nitrocellulose swelling, kneading, pressing and stretching, baking the solvent, and throwing out the gloss with graphite to obtain the product; The bibase propellant is an energy-based propellant based on nitrocellulose and nitroglycerine/oil, which is absorbed by nitrocellulose in the aqueous phase, and then pressed into a sheet in a double-roll calender, kneaded and pressed to dry the gloss.

Ethylene glycol can be made entirely from ethanol, which is alcohol!

It is dehydrated with concentrated sulfuric acid to make ethylene, which is then reacted with sodium hydroxide------

Therefore, Zhang Guoan wants different kinds of cotton in different places.

He knew that cotton was introduced into the Great Song Dynasty, and there were about 3 different ways.

Based on the analysis of flora and historical data, he believed that cotton spread to the Central Plains from the north and south.

Nanlu was the first Asian cotton of India, which was introduced to Hainan Island and the Liangguang region through Southeast Asia, according to historical records, at least in the Qin and Han dynasties, and then into Fujian, Guangdong, Sichuan and other regions.

The second route was introduced to Yunnan from India via Burma, around the time of the Qin and Han dynasties.

The third way is that African cotton was introduced into Xinjiang and the Hexi Corridor through West Asia, the time was about in the period of the Northern and Southern Dynasties, the North Road was the ancient book \ "Western Regions\", during the Great Song Dynasty, cotton spread to the vast areas of the Yangtze River and the Yellow River Basin, and the yield was already very high.

He can only try them one by one, and it is useless to tell Lao Jia about these.

Zhang Guoan said: "There are mountainous areas in the central part of Liuqiu, and the mountains are bitter cold places, so cotton clothes are needed------"

Ping Zhangjia sighed: "It's really ------ hard place!" ”

Zhang Guoan sighed: "For the national fortune of the Great Song Dynasty, my friends are all doing formations in the deep mountains of 'Yunshen does not know where'------"

Pingzhang Jia seemed to be deeply moved, and he was not surprised at all to see that there were still good iron, copper, tin, and lead on the list.

He suddenly said: "You missed an item------ why didn't you count the rations of those soldiers?" Where do you want to feed the soldiers of the Great Song Dynasty? ”

Zhang Guoan smiled and said: "Now, we can basically be self-sufficient there------"

"No, no, it's a ------- that is illegal"

Zhang Guoan thought to himself, he really forgot about this matter, and said repeatedly: "It's better to replace it with copper!" ”

Pingzhangjia said happily: "In this way, I will double the materials you want, and the rations will still be given, not to mention the addition of thousands of salt households------

Thousands!

Zhang Guoan was almost speechless with excitement, this old Jia is really powerful!

Zhang Guoan immediately took out two watches, all of which were 24-hour style, engraved with twelve hours------ which Song Ziqiang bought on the Internet, one cost 268 yuan, at that time, Song Ziqiang bought ten watches at once, and the other party still only included postage and did not reduce the price.

This watch, they are ready to exchange money or important materials at a critical time, of course, it can also be used to bribe and increase feelings.

When the four friends left, they left him with the rest of the modern belongings, except for the important porcelain and bronzes and other artifacts.

Now is the time to use this thing.

Zhang Guoan said: "This thing is extremely accurate, the last string, can go for twelve hours!" That piece was given to the Great Song Dynasty official's family, and this piece was given to Pingzhang ------"

Pingzhang Jia seemed to be happy, and he hurriedly took it over to take a closer look.

He saw three small needles under the transparent shell, the red one walking fast, and the other two could not be seen.

Zhang Guoan explained: "The red one is the second hand, the short and thick one is the hour hand, and the other is the minute hand------"

Pingzhang Jia said: "Look at the needle at that time, it is about to be the time of Shen?" ”

Zhang Guoan explained: "Yes, if you look at the big circle outside the minute and second hands, there are still two minutes and eighteen seconds left!" ”

Pingzhangjia put it on happily, and then found that the watch strap also had a small case------

Zhang Guoan explained: "That is a compass, which can point out the ------ north and south"

Zhang Guoan regretted a little at this time, this strap can be removed and sold.

Pingzhang Jia shouted in surprise: "Yin Di Anguo really has a magical object!" How small can something as important as a compass be! ”

This unsteady little old man was walking around the study at that time! When I saw that the small needle had stopped and kept pointing in the north and south directions, I was happy to make a sound------

Zhang Guoan doesn't regret it much, this compass is now a precision instrument at sea, and it is not for the captain to grasp it.

He made the decision to remove the straps of his other watches and sell them!

Later, there were only two people in the Great Song Dynasty with watches, one was the official family of the Great Song Dynasty, and the other was Pingzhang Jia Nidao with a watch, known as "Jia with a watch".

Next, Zhang Guoan took out another object, which was quite big, like a box.

Its outer shell is made of cast iron, with tin hanging inside and out, and in the middle is a copper barrel that can be taken down or placed in a hollow at the bottom.

Pingzhang Jia seemed to be full of fun and watched it again, and felt that it was not new.

Zhang Guoan explained: "This is an ice maker, I saw that the weather was hot, so I made this thing for the sake of Pingzhang's body------"

After Zhang Guoan finished speaking, he took out a packet of nitric acid/potassium and sprinkled it evenly.

He said, "See that imprint?" In the future, you should sprinkle nitric acid/potassium exactly where it is. ”

He also had water fetched, and put it in a brass bucket and set it up in the hollow.

Then water is poured into it, and the white nitric acid/potassium can be seen to be dissolved.

He said, "Do you see that highest mark?" Later, it will be just right to sprinkle water to that position. ”

Pingzhang Jia seemed to touch his beard and watched Zhang Guoan's actions without falling to the ground.

He said: "The old man has also heard that saltpeter is used to make ice, but very little ice is made------"

Zhang Guoan explained: "The principle is the same, but due to the different purity, the result is different. ”

Ping Zhangjia stared at the water in the copper cylinder, feeling a little shaky, and he was a little surprised.

Zhang Guoan explained: "Don't be surprised, this is caused by the thermal expansion and contraction of the copper barrel, everything that happens has its reasons, it's just whether it can be found or not, there is no incomprehensible phenomenon." ”

Pingzhang Jia touched his beard, nodded slightly, and said, "This is reasonable------

At this time, it can be seen that the copper barrel is freezing with the naked eye!

Pingzhang Jia suddenly thought of a question and said, "Isn't it your kind of nitrate-acid-potassium that can be used?" ”

Zhang Guoan thought for a while and said:

"Unless you have nitric acid/ammonium or whatever, you can't do the rest, you can only use this.

The nitrate I gave to Da Song is all this.

A device can only use one raw material, one problem, and maybe only one way to solve it------"

Pingzhang Jia touched his beard and nodded slightly: "This is also reasonable------

The water in the copper cylinder was frozen into ice.

Pingzhang Jia seemed to ask people to go to the kitchen to break the ice cubes, and the town had a pot of tea and soup.

He said, "Zhang Dashang, are you willing to help me?" ”

Zhang Guoan said: "It's not that I don't want to, now I pray for the Great Song Dynasty, and the most important thing is to make a formation." Don't pour out the water in the tin box, heat it repeatedly with a warm fire, and then cool it down, and the nitric acid/potassium will all be precipitated, and you can use it repeatedly! ”

Pingzhang Jia seemed to nod frequently at this time, yes, this matter is the most important thing at the moment.

Zhang Guoan finally said: "I also brought refined salt, and the plain chapters can be distributed to the ministers." It is the essence of salt, and there is no bitter taste, but it is laborious to process. ”

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This night, Pingzhang Jia Rudao took some objects and went directly to see Zhao Yu, the official family of the Great Song Dynasty.

No one knows what the two of them discussed in the vertical arch hall of the Great Song Palace.

Zhang Guoan returned to his home outside Hangzhou, which was often cleaned by the servants who stayed here, and it was still very clean.

He called the servant to call for takeaway, drank some wine, and was about to go to sleep.

Not to mention, it was quite tiring to talk to that old guy, but luckily it turned out to be okay.

As long as it is a normal IQ, the person is not completely broken, and the benefits of cooperation can be seen.

At this time, the commander of the Imperial Arquebus Battalion, Fa Ke, came to visit!

Zhang Guoan thought, there is something more urgent than me, I will go to see Jia Yidao as soon as I get off the boat, this guy will come to see me as soon as I go home.

The commander of the Imperial Arquebus Battalion was indeed a little anxious.

No matter how his craftsmen tried to make black fire/medicine, they were not as good as those maritime merchants, and they tried to burn it on white paper, and they could finally ignite the white paper!

Those craftsmen were also very aggrieved, claiming that this was already the best black fire/medicine, and the medicinal power was already more than the previous one.

Therefore, he probably looked forward to the return of the maritime merchants more than anyone else.

ps: It's officially on the shelves tomorrow, and it will be changed to a chapter of about 2,000 words, two chapters a day.

The editor suggested that I write a listing testimonial, but I didn't want to write it, for the simple reason that subscriptions are never begged!

Everyone is looking for a book that suits them, and in fact, a book is also looking for readers that suits them.