A meeting lasted almost two hours, and everyone was actively speaking, and there were some technical aspects that needed to be discussed.

Zhang Xiaofan elaborated on the technical standards required for each link, and the meeting ended, and then led the team to conduct research and development.

When it comes to glittering metallic powder, you can't do without a tool.

Bonding machine.

Bonding, in fact, is a transliteration of the word, which comes from the English bonding.

Bonding technology is actually a heat-capacitive bonding technology for metal pigments.

Although powder coating is solid, it has a glass transition temperature, and when it reaches this temperature, it will slowly turn into a molten state.

That is, the process of changing from hard to soft.

Similar to glass cautery softens.

Bonding technology is to knead solid coatings with metallic pigments in a molten state.

Here's an example.

When the glass reaches a certain temperature, it will soften, at which point you insert a piece of metal iron into it, and then let the glass slowly cool and harden.

At this time, if you go to take this piece of metal again, you will find that you can't pull it out.

This is the simplest principle of the binding technique.

Bonding technology can make the metal luster of metal paint more uniform, more beautiful and more beautiful.

At the same time, it can also reduce the amount of metal pigments suspended in the air, so as to achieve the role of environmental protection.

At present, Zhimei New Materials has bonding units, a total of six groups.

A bonded unit with a capacity of about 100 kilograms per hour.

This is one of the reasons why metal coatings are more expensive.

There are also two main processes.

One is the preparation of primer coating, which is similar to the preparation of ordinary coating.

The second process is bonding.

Many manufacturers have been secretive about bonding technology.

Because at present, there are really few manufacturers who have mastered bonding technology, and even many manufacturers don't even know what bonding technology is!

The first is because the price of the bonding machine is too expensive, and the price of a good bonding machine is about more than one million.

The price of the domestic bonding machine is a little cheaper, about 400,000, but the effect is not satisfactory.

Therefore, many manufacturers of domestic bonding units use many metal products, and the effect is not as similar as that of bonding units.

This is a rather awkward situation.

Money was spent, but the effect did not come out.

Some may be technical failures, and some may be units that are not up to compliance.

Whatever the reason, this makes the best metal coatings on the market extremely valuable.

Prices have also remained high.

Many manufacturers have mastered bonding technology, so huge profits follow.

Zhimei New Materials is also one of them, and it has truly mastered the bonding technology.

At the beginning of the establishment of the company, Zhang Xiaofan had already purchased six bonding units.

Although it has not been running at full capacity until now, the profit brought by metal coatings is almost 5 to 6 times that of ordinary paints.

Ordinary metal coatings are actually very easy to distinguish.

We take the product outdoors and shine it in the sun, and if it sparkles, it's definitely the metallic paint.

There is also a paint coating, which looks like a layer of metal on the surface, some are silver, some are gold, and some are bronze.

Regardless of the color, they all have one thing in common, a metallic sheen.

This type of paint is generally very popular, but it also has a lot of drawbacks.

As a simple example, a lot of the gym equipment we use is painted with metallic silver powder.

It's the kind of color that is very close to aluminum.

But this paint has a big drawback, our hands are a little sweaty, and after touching it, there will be a handprint.

Of course, this mudra can be wiped clean.

But you wait a few months, and after half a year you go to see this mudra.

You will find that the color on this piece is actually darker than other places without handprints.

That's because of corrosion.

Because we sweat, we carry a lot of sodium chloride, which is actually a very corrosive chemical.

Sodium chloride can easily destroy a protective film on the surface of the paint, so that the metal pigment is exposed to the atmosphere.

There are a lot of oxides in the atmosphere, and aluminum pigments turn black because of the chemical reaction with oxides in the atmosphere.

Of course, we may not look really black, but rather black compared to other colors.

This is because the corroded part only occupies the part of the metal pigment, and not all of it is corroded.

Because metallic glitter coatings are the most important part of the entire wheel process development process.

So there are significantly more R&D personnel in this group than in the other two groups.

This time, Zhang Xiaofan did not act as a shopkeeper.

This time, the time is obviously shorter.

So as soon as he arrived at the laboratory, Zhang Xiaofan began to assign tasks.

"This time my task is very heavy, the focus is on the selection of film-forming substances, and this experiment will be very large.

As for the choice of metallic pigments, our range is actually quite narrow.

I won't say more, there are only a few metal pigment manufacturers in the world that meet the requirements.

Products can only be selected from them, so this reduces the burden on our experiments. ”

Sometimes when you don't have a choice, you can only pinch your nose and admit it.

So the breakthrough is definitely not from the side of metal pigments.

It is absolutely necessary to choose from the film-forming substance.

There are many polyester manufacturers and curing agent manufacturers in the world, so there will be a lot of choices.

"I have always stressed that there is never the best raw material in the world, only the most suitable raw material.

Since our group is only developing the paint in the middle layer, there are not many requirements for fire resistance and some other aspects. ”

Since it is not in direct contact with sunlight and does not come into contact with the atmosphere, it is possible to sacrifice some other properties such as weather resistance, corrosion resistance, etc.

Just grab a little and it's perfect for metallic paints.

"This time we have two goals, the first is ordinary outdoor polyester, and the other is polyurethane.

If neither of these works is possible, we can try polyurethane acrylic, a UV-curable coating.

However, we will not consider it for the time being, you will immediately count, which manufacturers' products are in stock in our warehouse now?

If there is no inventory, we will order it as soon as possible, and we will try to contact new polyester manufacturers that we have not been in contact with.

Both domestic and foreign, large and small factories can be, as long as he produces polyester.

Let's order one to two packs for experiments. ”

Then Zhang Xiaofan continued to arrange the task.

Who contacts the new polyester manufacturer and then places an order. Who experiments with the existing polyester.

Everything seems to be in order.