In 1978, I was admitted to Harbin Institute of Technology

Chapter 39 Director Kang, please listen to my excuse: I did it to earn foreign exchange through exports

After entering the laboratory, Xie Wei realized that the laboratory had all the basic materials he needed.

After receiving the experimental materials from the material room, Kang Yi seemed unwilling to let him go and asked Xie Wei to introduce various experimental equipment and usage methods to the three graduate students.

This made the three graduate students look extremely resentful.

After all, they are graduate students.

It was a little hard to accept asking a freshman to introduce the experimental equipment and instruments to them.

Xie Wei was also very nervous: he was afraid that his graduate school seniors would hit him with a brick on a dark and windy night.

It took Xie Wei a while to finish introducing the various experimental instruments he would use.

Kang Yi clearly wanted to test Xie Wei. If he didn't follow Kang Yi's requirements, he wouldn't be able to get the various raw materials, let alone use the laboratory.

Xie Wei not only needed the laboratory to provide raw materials, but also had to take the prepared AES out for use.

Otherwise, it would be a waste of time for Kang Yi to assess me, which would not be worth it.

People are under the roof.

"When you do the experiment, explain the experimental process to them, as well as the precautions during the reaction process."

After Kang Yi finished speaking to Xie Wei, he did not allow him to refuse and turned to He Yang and the others and said, "Keep the experimental records."

Xie Wei no longer wanted to resist, it was useless.

He Yang and his friends felt aggrieved, but they did not dare to confront their instructor.

School has just started.

"First, distill the pure water..."

"Prepare a sodium silicate solution..."

"Preparation of aqueous aluminum solution..."

"Sodium silicate solution and aluminum aqueous solution are slowly poured into the container, and the temperature must be controlled... Hydrofluoric acid is added at the same time, and it is stirred slowly to mix thoroughly... Then diluted sulfuric acid is added for neutralization reaction. Protection must be taken during the reaction process, and the liquid must not come into contact with the skin... The pH value is best controlled in the neutral range of 7.3 to 7.5, and at most, it can only be weakly alkaline..."

During the whole process, Xie Wei explained while he was operating.

He Yang and his friends, who were reluctant at the beginning, gradually turned into good students who took notes seriously in their notebooks.

Although, they didn't know what Xie Wei was doing.

"The filtration and washing process must be performed several times to fully remove impurities. Finally, high-temperature calcination is directly used to dry the precipitate and transform it into a stable crystalline AES..."

"What is AES?"

From the very beginning, He Yang wanted to ask what Xie Wei wanted to say.

But the instructor was watching and asking questions, which only showed that my foundation was too poor.

When Xie Wei said this, He Yang and the others had never heard of it.

"AES?"

Kang Yi was also stunned. As the head of the Chemistry Department, it was difficult for him to ask.

He kept watching the entire experiment.

Although Xie Wei made a lot of mistakes during the process, it was definitely not like when he just started the experiment.

Kang Yi was puzzled: Isn't Xie Wei a technician from the machinery factory? How did he get the conditions to do the experiment before? How could he be so familiar with it?
"Sodium alcohol ether sulfate, translated into English, is Sodium Alcohol Ether Sulphate, referred to as AES. I got it to wash lunch boxes, it should be very effective in removing grease..."

The whole process involved distilling and condensing pure water, as well as high-temperature calcination. Xie Wei, who was already exhausted, answered subconsciously.

Before he finished speaking, he realized the problem and immediately kept silent.

Now there is a real problem!
I secretly glanced at Kang Yi, and sure enough, Director Kang's expression changed instantly.

The kindness that Xie Wei had maintained since they met was replaced by anger.

"What? You used my chemistry lab and spent an entire afternoon just to make a lunch box washing thing?"

Kang Yi's defense was broken.

He thought that Xie Wei, a technician who had just entered his freshman year, would do something that would be beneficial to the factory's production.

The result! It is actually used to wash lunch boxes?

It's simply not doing your job!
The three graduate students were also dumbfounded. It was a good thing that they listened so carefully and wrote down every experimental step and precaution in detail, even for fear of revealing them.

It was both acidic and alkaline, and after several hours of work, it was almost dark outside and I was very hungry. If the cafeteria ran out of food, I might have to go hungry tonight.

After such an investment, what he got in return was just money for Xie Wei to wash lunch boxes!

Who can accept it?

Being stared at by Kang Yi with murderous eyes, Xie Wei was extremely panicked.

Pretending to be calm, he said, "Well, Director Kang, please listen to my defense... No, please listen to my explanation... "

"Puff~hiss~"

He Yang, who was originally very angry, was amused when he heard Xie Wei say that he would listen to his "quibbling".

As a result, as soon as he laughed, he was glared at by the angry Director Kang, and he could only try hard to hold back his laughter.

Although the other two did not make any sound, their bodies kept shaking slightly.

It was obviously extremely difficult to hold it in.

Kang Yi looked at Xie Wei with a dark face: "Come, let me hear your sophistry."

"Uh~"

Xie Wei's mind raced, realizing that he had let the cat out of the bag. He shouldn't have said that he went to the chemistry lab to study AES just to wash lunch boxes.

We have to start from the perspective of the development of the chemical industry and its contribution to national construction. That is politically correct.

Cleaning greasy lunch boxes can only be used to test the decontamination effect of AES.

After understanding this, Xie Wei instantly felt relieved.

Without blushing, panicking, or panting, he began to make up a story: "Director Kang, when I was a kid, I went to People's Park to play and heard an old man say that there is a thing called dishwashing liquid in foreign countries, which has a particularly strong ability to remove grease."

Once again, Xie Wei brought out the bigwigs who used to gather in People's Park to discuss issues.

Easy to use.

"One Chinese New Year, my mother cooked more than three pounds of fat meat for my sister and me so that we could eat as much meat as we wanted... When I was washing the dishes at night, the dishes were greasy and I didn't wash them quickly. On the morning of the first day of the Chinese New Year, my hand slipped and the dishes broke. As a result, my mother severely beat me. At that time, I thought that if I had detergent, I wouldn't have to be beaten on the first day of the Chinese New Year. That was not a good sign..."

As the story was told, Kang Yi's angry eyes softened instantly.

He Yang and the other two sighed silently: Who hasn’t been beaten for breaking a bowl as a child?
Especially when there are many children in the family and both parents are working, life is tight and they can hardly fill their stomachs, so where would they get the money to buy more jobs?

If the bowls are broken or you get beaten, you can find a craftsman who has been doing this skill for thousands of years and walks around the streets to mend the bowls!
"When I was working at a company, after I designed a pressure cooker, the leader of the Light Industry Bureau came to investigate and asked the factory to prepare to participate in the Canton Fair next year to strive for export and foreign exchange earnings. At that time, I was thinking that foreigners eat meat every meal, so their bowls and plates are greasy. If we can make dishwashing liquid, it will not only be easy to export and earn foreign exchange, but the key is that the amount used is large, and continuous export can continuously create valuable foreign exchange for the country..."

After making up the story, they made up a high-sounding reason for being politically correct.

He Yang and his friends believed it.

Kang Yi snorted in his heart: Washing lunch boxes should be Xie Wei's real purpose. As for exporting to earn foreign exchange, it is probably just an excuse this kid used to deal with him temporarily.

But he couldn't blame Xie Wei.

The country really lacks foreign exchange.

Not to mention anything else, the accuracy of many of the school's testing equipment produced domestically cannot be compared with that produced abroad, which requires foreign exchange.

However, due to the shortage of foreign exchange and the tight quota, the school finds it difficult to obtain much foreign exchange to purchase the advanced teaching equipment and experimental instruments it needs.

"Xie Wei, how do you know this thing can remove grease?"

He Yang asked hurriedly.

As a result, Kang Yi glared at him again and he shut up immediately.

Kang Yi's gaze turned to Xie Wei again. He also wanted to know the answer.

"The library of Bashu Province has quite a few books. I have read in a chemistry book I borrowed from there before that oxyethylene groups have hydrophilic properties, while sulfate groups have hydrophobic properties. Sulfate groups also have the function of decomposing oils and fats, which is actually an oxidation-sulfiting process..."

"..."

As Xie Wei introduced the chemical reaction in depth, He Yang and others felt that they began to not understand.

(End of this chapter)