After assigning the task, Zhang Xiaofan took out the formula.

In fact, so many people are looking forward to the formula written by Zhang Xiaofan.

This allows them to have more technical accumulation, and at present, the new materials of Zhimei are not much better than other manufacturers in terms of formula.

The main thing is still the details.

"This time, we're doing fillerless paints.

Because the proportion of metallic pigments that we need to add this time is going to be very, very large.

If we add fillers in this case, then the product will look dry.

First of all, its surface will be very rough, and then due to the addition of fillers, it will not flow enough, causing the whole metal pigment to not be able to turn normally, so it is difficult to achieve the effect we want. ”

So many people have been staring at Zhang Xiaofan and found that the formula he wrote was actually very, very simple.

How simple is it?

It's a very, very normal transparent paint with a little pigment in it.

So a lot of people are very stunned.

"Mr. Zhang, isn't this recipe too simple?"

Finally, someone couldn't help but ask.

"Egg fried rice should be a very simple meal for the chef world, but there are really few chefs who want to stir-fry egg fried rice well.

Why?

It's because everyone knows a little bit of egg fried rice, so if you want to push the envelope, and if you want to do it better than other chefs, you need to put more thought into it.

But what chef would want to work on a dish of egg fried rice?

So don't underestimate the simplest paint formulation, which is often the most difficult. ”

Ordinary clear paint, definitely the simplest of all paints.

Because it only has a film-forming substance and a little bit of additives.

But it's very, very hard to get it right.

He doesn't have a lot of technical points, but he does a lot of detail.

First of all, all additives for transparent coatings must be truly transparent, if there is a little flaw or a little impurity on your additives.

As a result, the whole paint will become slightly hazy, so that the transparent paint you produce is not really transparent.

So the first pass, the choice of raw materials.

Will determine whether your finished product is good or not?

The first level will be chosen, which will determine whether the paint you produce can be called clear paint or not.

Transparent paints, as the name suggests, must be truly fully transparent, as transparent as glass, or the kind of glass without impurities.

The second main point.

Your machine is going to be cleaned very, very clean.

This is relative to ordinary manufacturers, and there is no such problem when it comes to the most beautiful materials.

Because Zhimei New Materials has a unit specializing in the production of transparent coatings, this time a machine was specially ordered to make transparent coatings.

At present, the R&D team led by Zhang Xiaofan has developed transparent coatings and the transparent coatings developed by the third team are not the same.

The role of the two transparent coatings is not the same, and the use is different, so the raw materials will be different.

Don't confuse them.

"Alright, let's go into groups, let's do the experiment.

The technical points, I think you should all know, are the technical points of the production of ordinary transparent coatings, and it is enough to achieve it.

I won't talk much.

But you must control the particle size.

It is necessary to experiment with various particle sizes, what are the effects on metal pigments?

The average particle size, between 25 and 40, is experimented with for each number. ”

At this point, almost everyone felt like they were going crazy.

It's terrifying, isn't it?

The number of experiments this time will be jaw-dropping.

First of all, the number of the entire country, plus some well-known foreign polyester manufacturers, will exceed 150.

Each company chooses one or two kinds of polyester, and basically about 260 kinds of polyester need to be experimented.

Then pairing, using curing agent pairing, but there are not many manufacturers of curing machines, so the number of experiments can be relatively reduced.

Even if only three curing agent manufacturers are selected.

Then the number of experiments would be as high as 840.

Then Zhang Xiaofan asked that after going through 25 to 40, each stage should be experimented once.

Then the number of experiments is 13,340 times.

"Mr. Zhang, is the amount of this experiment too large? We may not have enough manpower.

Otherwise, we choose several polyesters, and then test them separately, in which particle size range, the addition to metal coatings will be the largest.

And then we reduce the size of the particle to reduce the number of experiments?"

Zhang Xiaofan naturally knew that the number of experiments was very, very large.

However, the chemical reaction and physical changes that occur when the coating is cured are very, very many.

There's so much at stake.

The polyester produced by each manufacturer may have very small and subtle differences in their various properties.

These differences are not visible in ordinary paints, but if you apply them to metal paints.

Often, small nuances can make a big difference.

Zhang Xiaofan didn't want to give up any kind of high-quality raw materials that he didn't find.

This time it is not only a screening of paint manufacturers, but also a screening of raw materials.

"Paints are in the production process, in the process of use, they will undergo some unexpected changes.

Each manufacturer's polyester is under different particle sizes and different curing agents.

There will definitely be some unexpected changes, and you can't be sure that most manufacturers' products, under a certain particle size distribution, are very beneficial to metal coatings.

However, some manufacturers of polyester often exceed this range.

But they are just below a certain particle size, and the addition of metal coatings is very, very good.

In case we miss this polyester, is it not our loss?

In fact, the number of experiments is not as large as you say.

Many can be done at the same time, choose one polyester, choose one curing agent.

The first batch was made a little bigger, and it was sixty or seventy kilograms.

When crushing again, the plugs should be layered to distinguish the coatings with different particle sizes, just like petroleum distillation.

Isn't it a lot simpler?"

In fact, many people think of such a method, but suddenly, subconsciously feel that this number will be very large.

So reluctant to think.

The number of experiments has dropped a lot, but now there are more than 40 technicians here.

Zhang Xiaofan guessed that the experiment was completed, and it was estimated that it would take nearly two months.

So the number of experiments is still quite large.