Otaku Engineer in Great Tang Dynasty

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"Master, you are finally here~!"

Qiqu Pavilion's new workshop in Mei Village finally welcomed its owner today. Speaking of which, Li Zexuan, the boss, is really not qualified at all. He didn't care about the expansion of the workshop from beginning to end. , The full authority was handed over to Uncle Fu, and after the new factory was built, he had not been there from beginning to end, so Uncle Fu saw Li Zexuan who came suddenly in the afternoon, both resentment and surprise.

A slightly embarrassed look appeared on Li Zexuan's face. Obviously, he also heard the deep meaning of Uncle Fu's words, "Cough, Uncle Fu, long time no see! How are you feeling recently~?"

Uncle Fu glanced at Li Zexuan and sighed helplessly. He knew that Li Zexuan had a lot of things recently, so he didn't blame him too much, and Li Zexuan always respected the old people in their workshops, so Uncle Fu also He has always regarded Li Zexuan as his junior, "Young master is worried, I am in good health, and I can help the young master manage the workshop for another two years!"

Uncle Fu led Li Zexuan to the workshop, and at the same time answered Li Zexuan's question.

After hearing this, Li Zexuan frowned. He suddenly remembered something. Uncle Fu is old now. Even if he is free from illness and disaster, he will be able to work in the workshop for two or three years at most. to take over? Who's going to provoke this beam?

The successor, the successor, from now on, I have to pay attention to a successor for Uncle Fu!

Li Zexuan sighed in his heart.

The new workshop of Qiqu Pavilion covers a very large area, occupying a total area of ​​nearly 100 acres, which is dozens of times larger than the workshop in Chang'an. According to the different functions of the area and the different types of items produced, the workshop is divided into ten areas. The production area has a long-shaped large factory building similar to modern times, the office area has an office building, and the living area has a dormitory. It can be said that this new worker The workshop, which covers almost all the elements, is the most comprehensive workshop in the entire Datang.

"Oh, by the way, young master, you brought so many barrels of white pulp yesterday. What is the purpose of keeping them? The warehouse of our workshop is almost full of those things~!"

Uncle Fu was planning to take Li Zexuan to the office area to sit and rest for a while. When he was halfway through, he suddenly remembered the thousands of barrels of white pulp delivered by the Wang family's fleet yesterday, so he turned his head and asked.

Li Zexuan smiled slightly and said, "That thing is called rubber, but it's precious! So much rubber combined should be worth more than our workshop! Don't worry, I'm not here today to teach you how to use it? "

When Fu Bo heard this, he felt a little unbelievable. He had already inquired from elsewhere today that Li Zexuan had bought these rubbers and had spent a total of 8,000 kuai. Even if these rubbers could bring ten times the profit of the workshop, it would only be 80,000 guang. , how could it be worth more than the entire workshop?

"That's right! The old man is just looking to see, what can these things like soy milk be used for?"

Seeing Li Zexuan's promise, although Fu Bo didn't believe it in his heart, he still wanted to see it.

"Hehe~! Then let's go to the workshop next to me, Mr. Fu, let someone bring a bucket of rubber over here! Oh, and by the way, bring a big pot of white vinegar~!"

Li Zexuan pointed to the big factory next to him and told Fu Bo.

"okay!"

Although Uncle Fu wondered why Li Zexuan wanted to be jealous, but at this time it was inconvenient to ask more, so he instructed the people below to do the same.

……………………

After a while, Yiying objects were all ready, and Fubo also brought some old craftsmen from the workshop to watch.

"Song Xiaosi, Pang Feiji, you pour this bucket of rubber into the stone trough!"

Li Zexuan pointed to the rectangular stone trough in front of him, and instructed Song Xiaosi and Pang Feiji behind him.

This stone trough was originally used for annealing when the blacksmith's door was forging iron, but the matter was urgent, and Li Zexuan couldn't find any more suitable container at this moment.

"Yes, Master~!"

Song Xiaosi responded and quickly and Pang Feiji worked together to lift the big wooden bucket full of rubber. The white rubber latex immediately poured down into the sink. It looked as thin as soy milk. Likewise, it's no wonder that Forber couldn't think of a use for this thing.

"Well, pour all the vinegar in this pot again!"

Li Zexuan weighed the weight of the pot of white vinegar next to him, and then ordered.

A very important process in the extraction of rubber latex is curing. In modern rubber latex curing process, the most commonly used curing agents are formic acid and acetic acid.

Because formic acid and acetic acid can increase the content of hydrogen ions in the latex, thereby reducing the ph value of the latex, compressing the electric double layer, and making the hydration film thinner, when the isoelectric point of the protein is reached, the zeta potential is zero, and the rubber particles are regenerated. Without repulsion, they gather together and solidify into a block.

In the 21st century, most foreign countries use formic acid as coagulant, while domestic acetic acid is mainly used as coagulant. The specific acid selected is different, and the properties of the obtained glue will be different. These knowledge points were all learned by Li Zexuan in the factory of the local tyrant classmate in his previous life. Otherwise, how would he know this?

In the Tang Dynasty, formic acid was definitely not available, but acetic acid was there! Because of the so-called acetic acid, it also has a very popular name, that is, acetic acid, and vinegar contains a lot of acetic acid! This is also thanks to the wisdom of our ancestors, who first invented vinegar, otherwise Li Zexuan would have to make vinegar now.

"You two now go get two hoe handles, wash them with hot water, and then bring them over and stir them vigorously~!"

Li Zexuan ordered quickly.

Song Xiaosi and Pang Feiji took their orders and left, and after a while, the two of them walked in each with a smooth hoe. Under Li Zexuan's demonstration, they began to work hard with sticks in the stone trough. stir up.

"Hey, hey, master! It's solidified, solidified! It was like soy milk just now, but now it's turned into tofu~!"

After stirring for about a quarter of an hour, Pang Feiji suddenly exclaimed in surprise.

"It's really turned into tofu, come and see~!"

Song Xiaosi was also very excited.

There is no need for him to say that Fu Bo and the rest of the craftsmen have already come together. Seeing that the rubber latex that looked like a slap in the face before, now looks like tofu, Fu Bo couldn't help but exclaim:

"Hey~! That's really weird! Didn't you just pour a pot of vinegar into it? Why did all the rubber solidify?"

"Yeah! It's so bizarre, it's almost like a conjuration! It would be unbelievable if I hadn't seen it with my own eyes!"

The rest of the craftsmen were also shocked. They who had not learned chemical reactions could only classify it as conjuring.

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