After waking up, he was still a little unconscious.It wasn't until Jiang Duo finished changing his clothes for him and put a warm handkerchief on his face that he really woke up.

"Jiang Duo, today's meal is lighter, I don't have much appetite." Song Qingyuan leaned on the pillow and said weakly.

"I know, I'll tell the steward of the kitchen when we come together today." Jiang Duo handed over the mouthwash and said.

"It's so sweet." Song Qingyuan dipped in the powder to clean his teeth, and sighed, "Without you, I really don't know what my life would be like."

Jiang Duo scratched his head with a smile: "Your Highness is absurd, the little one is not as powerful as His Highness said."

Song Qingyuan shook his head, it wasn't his absurd praise, but Jiang Duo's ability, which was indeed incomparable to those ordinary managers.

When he came to Huijing from Yanyun, he had traveled a long way. Apart from Qin Zizhen, who voluntarily took the post of leader of the guard army and brought three hundred guards to follow him; There is no one to follow.Jiang Duo was responsible for the basic necessities of life and daily expenses of the group of people on the road, and no mistakes were made.

But Jiang Duo is a sin slave who has been tortured to have his face tattooed.There is an engraving on the face, which basically cuts off all his ways out.

It's a pity that despite his talent, he can only be a small steward by his side.

Song Qingyuan frowned unhappily, and did not continue the topic.

After yesterday's banquet, the next time he interacts with Emperor Hongde will be when he submits the Yanyun State Letter for his father next month.

There is no need for Song Qingyuan to worry about the book of credence, the King of Yan will naturally send someone to send it over.There is a high probability that he will also send some worthless Yanyun specialties to his old boss Hongde Emperor.

The only thing Song Qingyuan needed to do was: send the letter of credence and the gift list to Emperor Hongde, and by the way, be a living target to bear the wrath.

Therefore, during the period before his father sent the letter of credence, Song Qingyuan was completely idle, staying in the mansion peacefully, studying papermaking technology carefully, and striving to make tung oil paper that can paste windows as soon as possible.

There are really books that record papermaking skills in detail. It was not until the end of the Northern Wei Dynasty that a person named Jia Sixie appeared and wrote "Qi Min Yao Shu", which has been handed down to this day.

As for whether there will be an equally great agronomist in this era, compiling a masterpiece recording agricultural and animal husbandry production technology...

After reading a lot of books, Song Qingyuan gave a negative answer.

Without any information to refer to, Song Qingyuan could only bite the bullet and figure it out by himself.

Papermaking is far from as simple as people imagine, and there are many ways to do it.If he followed the videos he had watched on the Internet in his previous life, what he would end up with would only be the poorest quality earthen paper, not as good as the ordinary paper currently being sold in the market.

In the end, he decided to refer to modern papermaking technology, disassemble every processing procedure of mechanical papermaking, and replace it with the existing technology.

Fortunately, even in modern papermaking, the improvement is only the use of mechanical processing and the addition of some chemical components that were not available in ancient times, but the general process is still similar to that of handmade paper.

Machine-made paper can only increase output and reduce costs, but in terms of quality, it is not necessarily better than artificial paper.Otherwise, in modern times, Song Qingyuan wouldn't spend hundreds of dollars to buy a piece of stone bridge white paper.

After determining the basic process, Song Qingyuan began to select raw materials.

In his original plan, the raw material he considered was ramie.Because the fiber of the hemp plant is more slender and more flexible than the bark, the paper produced will be whiter, brighter, more flexible and stronger.

This is simply the best choice for window paper.

But after careful consideration, he gave up his plan to make paper from hemp.

The first is to consider the complexity of the process of hemp paper.If the cost cannot be reduced, naturally it cannot be extended to the bottom people.

In addition, hemp plants are also raw materials for ordinary people to make clothes. If they are used in large quantities to make paper, it is unknown how many people will suffer.

This is also an important reason why he finally gave up making hemp paper.

Bark is a much richer raw material than hemp.Using bark to make paper can greatly increase the output of paper and reduce a lot of costs.

But there are advantages and disadvantages, and the content of lignin and pectin in bark is much higher than that of hemp.

Lignin and pectin will cement the fibers and stiffen them.Therefore, making paper from bark is far more difficult than making paper from hemp.

If he uses bark to make paper, he has to consider how to degumming it.

The methods of decomposing lignin and pectin are no more than water retting, fermentation, and boiling. However, the specific time and degree of cooking required for each process require generations of artisans to improve after long trials. .As a time traveler, the only thing Song Qingyuan can do is to cross this long period of time for the working people.

Preparation, retting, steaming, rinsing, and chopping are all physical work. Song Qingyuan is delicate and weak, so naturally he can't do it by himself.Jiang Duo had to go back and forth between Zhuangzi and his residence on the outskirts of the city every day.

He himself stayed in the study all day, holding the written papermaking process, thinking about whether there is room for improvement.

Subsequent beating is a key step in papermaking.The principle of beating is to deform, swell, fibrillate and cut off plant fibers through pounding and whipping.This step determines the softness and plasticity of the fibers.It also has an important impact on the tear resistance, hardness, and light transmittance of the paper. (1)

Song Qingyuan didn't dare to be careless, and sent someone to transport the rinsed wood to the mansion, and completed the process under his nose.

The place where he lives now was built by Emperor Hongde according to the prince's regulations.Logically speaking, the apse should be the place where the female relatives of the mansion lived.

But the palace of the third prince Yanyun doesn't even have a maid, not to mention the female relatives.Except for a few elderly nuns in the kitchen, only the embroiderer I found for making pillows was left.Originally, these embroiderers also planned to leave a few days ago.

But it happened that the auspicious clothes sent by Emperor Hongde didn't fit well, so Song Qingyuan had to stay with them for half a month to modify the auspicious clothes for him.

Therefore, his apse was basically used by Jiang Duo as a treasury and warehouse.

The rinsed wood was disguised as vegetables in this way, transported from the small door to the long-vacant west courtyard, poured into several large vats that had been erected, and the craftsmen pounded the mortar day and night.

This step reflects the superiority of handmade paper.When manually beating, the fibers in the pulp are preserved to the greatest extent.Compared with machine beating, which breaks up fibers, handmade paper is much tougher than machine-made paper.

But is it because of these that you choose to beat by hand?Of course not.

If Song Qingyuan had a choice, he would definitely choose the latter.After all, the efficiency of papermaking improved by machine beating is not 01:30.

The craftsmen were divided into two groups, taking turns to rest.But Song Qingyuan had to stay by the side all the time.He has to observe the degree of pulp pounding at all times.

At times like this, he misses his body from his previous life very much.In his previous life, he worked overtime at the company until the early hours of the morning, and the next day he was able to ride the tricycle of his fellow villagers to catch the morning market, and go to the mountains for field trips.

The next morning, the beating of the pulp was completed, and Song Qingyuan, who had been up all night, was also helped into the temporarily cleaned wing, where he drank the soup with a sick face.

But fortunately, papermaking can now be done.

For paper making, adding different fillers to the pulp can make the paper obtain some properties that are difficult to have without filling.For example, adding a sizing agent to the pulp can make the paper water-resistant; adding a toner can improve the color of the paper. (2)

The latter types of fillers are not available to Song Qingyuan now. Just as he was about to give up adding fillers to the pulp, he suddenly remembered Jiang Qing from the Operations Department mentioned, "When paper mills manufacture writing paper and printing paper, they always add fillers to the pulp. Add talc and kaolin to it."

At that time, he was working on a development project of a holiday villa. Jiang Qing, who was in charge of the operation, happened to see the project quotation schedule on his desk, so he mentioned it casually.

Jiang Qing's family owns a paper mill, so there should be no problem with what he said. After all, all the paper in his company is purchased from her family's paper mill.

In his previous life, Song Qingyuan didn't understand why he insisted on getting up at six o'clock every morning to go to work despite being a rich second generation.Now I am extremely grateful to Jiang Qing, a self-reliant and self-reliant woman in the new era.

Today's kaolin generally contains a lot of impurities. If it is to be used as a paper-making filler, it must be reprocessed and purified.Song Qingyuan decisively chose talcum powder.Talc has been discovered and used by people a long time ago, and there is a record about talc being used as medicine in "Shen Nong's Herbal Classic".

You can buy talcum powder at the pharmacy, and the price is still cheap, Song Qingyuan flattered Jiang Duo to buy a lot.

But immediately he realized another problem. Although adding talcum powder can improve the smoothness of the paper, he didn't know how much to add.

The author says:

(1) Partial reference to Baidu Encyclopedia of "beating". (2) Sourced from "Papermaking Technology (Third Edition)" edited by Guo Wei, hereby marked.

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