I don't know if Zhang Xiaofan has a fever today?

Usually Zhang Xiaofan is relatively low-key, and Chen Ying, who was standing next to him, also looked at Zhang Xiaofan very strangely.

He feels that Zhang Xiaofan has changed a different person today, whether it is good or bad, he doesn't know for the time being.

But this diaphragm is not bad.

"Looks like you've heard of this project, it's a small thing.

The world's first conformal coating made of powder coating, which we made.

Maybe many people don't know conformal coating, I think it's simple to give you a science popularization.

How about the paint that is sprayed on the circuit board?"

I don't have any reaction to many people in the audience, but some of them are like seeing ghosts.

Obviously, this group of people knows the inside story.

Powder coating is sprayed on the circuit board, and there are too many difficulties.

For example, how to spray it, for example, how to control the baking temperature, and how to powder those dead corners?

"I'm embarrassed by your reaction, I always think that conformal coating, made with solid powder coating, should be more difficult than pipe inner wall paint.

That your reaction was not, and that makes me feel embarrassed!"

Seeing that the people below were still confused, Zhang Xiaofan didn't want to explain now.

"Forget it, just say a few words!

This conformal coating is UV curing, and secondly, the relative cost is lower than some other conformal coatings. ”

Then Zhang Xiaofan was not ready to do anything else, what kind of feeling was this.

That feeling is the Three Kingdoms period, you traveled through the past, with a pistol, pointed at Lu Bu and said, the number one military general in the world is nothing more than that.

However, Lu Bu felt redundant even to look at you, it was a deep disregard.

Others don't understand the technical content of conformal paint at all, and no matter what you say, it will be useless.

So Zhang Xiaofan didn't bother to talk more.

"Some of the reasons you came today may be to hope that I will help you to get your products into the sequence of food-grade coatings.

Some of them may be a little more sensible, and I hope I can give you a little trick to make your products pass.

I'm a person who is very afraid of trouble, so I think I'd better tell you something, and as for whether you can understand it, it's up to your creation. ”

Some people know that Zhang Xiaofan is the chief technical engineer of Zhimei New Materials.

Anyone who has dealt with Zhimei new material products knows that the price of their products is more expensive than yours, but others are willing to use the technical content of this, which can be imagined.

"Food-grade coatings, in foreign countries, have actually been proposed for a while, and are rarely mentioned in China.

It may be that those of us in the industry do not pay attention to it, or it may be that the government does not pay attention to it, and these are not important.

Now the first version in China, although it is only at the regional level, it can be regarded as a kind of progress. ”

Those who pricked up their ears to listen, when they heard Zhang Xiaofan say this, they were simply going to kill someone.

Who told you what to do? What's the point?

At this time, you have to hold back, others are willing to be verbose, and you can only listen to others' verbose.

Because someone else has what you want, that's why.

"Without further ado, if your eyes could kill, I guess I'd have died many times.

Let me tell you one of the most important tips.

The most concerned about food-grade coatings is the content of heavy metals and organic carcinogens.

95% of the heavy metal content comes from raw materials.

Organic carcinogens, 80% from raw materials and 20% from the design of your formula.

Okay, that's all I have to say!"

At this point, a lot of people quit, and you just didn't say anything.

Is there any significance to these things?

Many people showed very intense emotions and even wanted to rush to the stage.

Yes, Zhang Xiaofan knew that if he didn't say anything more, he would definitely not be able to end it.

"Don't be impatient, don't be impatient!

A little kidding, but I'm not wrong about what I'm saying.

Many of you are definitely not technicians, so you don't have a clue to listen to it, so I'll just say a few more words and go back and explain it to you technicians.

Food-grade paints, two important content limits.

Heavy metal content, there are many kinds of heavy metals, you go back and check for yourself.

They mainly come from raw materials, and the content of polyester will be relatively small, so you choose polyester, as long as you choose manufacturers with acceptable quality, there is generally no big problem.

The second one comes from the filler, if you can't use very high quality barium sulfate, I recommend you use calcium carbonate.

The third one comes from pigments, and this is the most significant source, so when you choose pigments, you must keep your eyes open and do a good job of testing.

The second aspect is carcinogenic organics.

His most significant source must be polyester, a by-product of polyester synthesis, so again, you must choose a big brand, preferably imported.

The second source is pigments, which contain the most carbon black, and we know that carbon black comes from the combustion of oil.

If the combustion of oil is not complete, the content of carcinogenic organic matter in it will be very large, so you must pay attention to carbon black manufacturers, and it is recommended that you use several of the world's largest carbon black manufacturers.

Like Capote, like Mitsubishi, and so on.

Let's just say that, in fact, after saying so much, I summed up one sentence.

Use the best raw materials, use less barium, use more calcium, and then the configuration of the formula should be more scientific. ”

Seriously, food-grade coatings do not have any technical content, and they are not worth Zhang Xiaofan's bragging.

On the contrary, some of the dosages are small, such as conformal paint, which Zhang Xiaofan brags about, but they don't understand.

So Zhang Xiaofan is also very helpless, sometimes you think you are the most awesome, but others think you are very ordinary.

Because it's a very ordinary thing, others think it's quite powerful.

This is the cognitive generation gap.

For what Zhang Xiaofan is talking about now, the people below are relatively satisfied.

After all, the most critical things to make food-grade coatings are the most important.

But in the end, whether they can do it, Zhang Xiaofan is actually skeptical.

What Zhang Xiaofan said is not wrong, but if the formula is not reasonable, then the coating will still produce organic carcinogens during the curing process.

But Zhang Xiaofan can't tell them the reasonableness of this formula, and even if they do, they may not be able to understand it.

Back in the office, Chen Ying followed.

Seeing Zhang Xiaofan seem tired?

"Mr. Zhang?"

"Hey, tired, why do so many manufacturers, they just think that others will research the product, and then copy it themselves?

Is it so difficult to develop a new product on your own?

Don't they know that the only one they can really trust is themselves? Who is so stupid to let them see the formula they have worked so hard to research unconditionally?

The really key technology will never be told to people, and this cannot be bought with money, don't they know?"