When it comes to UV curing, many people have not actually been exposed to it, which is a method that uses ultraviolet light as a catalyst to cure coatings.

The application of this curing method in paint is relatively common, but it is not very common in the application of powder coatings.

The most important material for UV curing is naturally light-curing resin, which is actually a type of acrylic.

Because only the terminal propylene group can react chemically with the light-curing agent.

Zhang Xiaofan was going to use a modified acrylic, mainly to increase the reaction speed and enhance his corrosion resistance.

Another important additive is the photoinitiator.

These things are relatively easy to obtain, because there are such manufacturers abroad.

In the past, there was no such thing as light curing (UV curing), so these things were not in stock, so there was no possibility of experimentation.

However, there is a benefit to this society, especially in places like Yuezhou, where basically all the world's products can be bought, and these curing agents and resins are no exception.

You don't need to buy it yourself, they will be willing to deliver it to your door.

Even the experimental equipment is available, so Zhang Xiaofan also bought it.

Seeing the busy employees in the laboratory, Zhang Xiaofan clapped his hands.

"Come all over"

Liu Qi was the fastest, and he knew that Zhang Xiaofan was going to give a lecture.

Although Zhang Xiaofan doesn't know much about three-proof coatings, there is still no problem with light-curing coatings.

Looking at the group of young people who were so hungry for knowledge, Zhang Xiaofan didn't know what they would be like after ten years.

Anyway, as a technician, if he can still be ten years later, with such a strong curiosity, then his achievements will definitely not be low.

But it's true that most technicians are facing a career change, either in the business or in another industry.

There are also some people who persevere, they will become very confused, which direction should they go, and the so-called curiosity will not exist.

Just after opening, Zhang Xiaofan began to explain the light-curing coating.

"UV curing, as the name suggests, is a coating that uses ultraviolet light as a catalyst to cure."

"It's actually a two-step curing process.

The first step is to use infrared light to heat and make the entire paint melt and level, which is not to say, as you know, in order to flatten the surface of the paint. ”

"The second step is the turn of ultraviolet curing, and the biggest advantage of ultraviolet curing is that the reaction speed is very fast. ”

"His speed only takes a dozen seconds, which is much, much faster than our traditional thermoset powder coatings. ”

For traditional thermosetting powder coatings, the reaction conditions are generally as follows:

The temperature is 175-200 degrees, and the time is 10-25min.

Of course, the exception is for low-temperature curing coatings, which can be very low, but can take a very long time, sometimes up to 35 minutes.

UV-curable coatings are very, very fast, almost instantaneous.

Therefore, this coating can be applied to some materials that are not resistant to high temperatures. , such as plastic, paper, wood, etc.

"I wrote a relatively basic recipe in this book, and I don't guarantee that he is correct. ”

"This requires you to experiment again and again to verify that the proportions of various materials are not necessarily fixed. ”

"We have to adjust the proportion of various materials according to the different substrates, anyway, there are waste circuit boards now, you can operate. ”

After Zhang Xiaofan demonstrated some instruments, he let them do it themselves.

For this formula, Zhang Xiaofan deliberately adjusted the various proportions slightly.

In order to let them not rely too much, the formula given by Zhang Xiaofan.

Obviously, the first time will not be successful, because the whole recipe is wrong, and the centralized recipe structure must be adjusted.

They raised their eyes to look at Zhang Xiaofan, but Zhang Xiaofan was still silent.

Even after they failed to succeed for the second time, Zhang Xiaofan left the technical department directly.

Recipe adjustments are traceable, as long as they can seriously learn some techniques before, these adjustments, after a period of time, will naturally become a technical instinct.

However, Zhang Xiaofan still called Liu Qi over.

"Spraying circuit boards is more difficult, so how to make spraying easier is the problem you have to solve.

The second point is that there are many dead ends in the circuit board, and there is no problem in how to make him powdered, which is also a difficult problem to be solved.

Thirdly, we must ensure that our coatings are protected in every corner, and you can try fluidized bed spraying.

Fourth, you have to control the viscosity, in the infrared leveling stage, you must ensure that every corner still has a certain thickness of coating in the fixed-line stage. ”

"Okay, I got it. ”

These problems are not too difficult to solve, but they require careful thinking, and Liu Qi happens to be very good at this point.

The main reason is that this time the time is too urgent, and everyone has not had so much time to wait, so they simply said some of the details that came to their minds.

As for whether there are other details to pay attention to, it depends on Liu Qi's performance.

Three-proof coatings are also a new field for Zhang Xiaofan, and there are still many things to grope for.

Whether it will work or not, Zhang Xiaofan doesn't know, but he has done his best.

Developing new coatings is not Zhang Xiaofan's forte, so he is not ready to get in the way here, just wait with peace of mind.

Zhang Xiaofan once again set his eyes on the doors and windows of Incheon.

I don't know how their bidding went.

Zhang Xiaofan is such a person, and with the passage of time, many things are easy to forget.

It's been so long, and the little bit of filthiness towards Liu Wencai has faded a lot.

What he is pursuing now is a kind of technical enjoyment, at least Zhang Xiaofan himself thinks so.

However, since the wood grain coating has been developed, the process has been confirmed.

Zhang Xiaofan felt that there was one person who would definitely try this kind of paint, and that was Li Feiyun.

He is also looking for a breakthrough in the ceiling industry, and if he uses wood grain transfer, it will definitely take his products up a notch.

Just do what you say, Li Feiyun, for Zhang Xiaofan, the significance is extraordinary.

pulled himself up when he was in the most difficult time, Zhang Xiaofan felt that if there was something good, he must be considered first.

"Brother Li, there is a good new paint, do you want to give it a try?"

"Bring a sample!"

Li Feiyun has always been so crisp.

Although he is in his 30s, Zhang Xiaofan is ashamed of his ability to accept new things.

"Okay, I'm going to talk to you about it this time, although my product is more cumbersome, it can definitely improve your product by one or two grades. ”

"Then what are you still grinding, come over directly!"