Hand rubbing nuclear fusion live in the wilderness

Chapter 137 Disadvantages of Insulating Resins

Throughout the morning, South Korean won was making glass containers. There were twenty or thirty pieces of large and small glass containers, which were enough for the basic chemical industry in the future.

The color of these glass containers is not pure and transparent, but with a hint of emerald green.

This is because the iron element and some other impurities in it have not been completely removed.

However, the requirements for Korean won are not high at present, and a little green will not affect the use.

Now that the terrarium is done, it's time to try making insulation in the afternoon.

After having lunch and resting for a while, Han Yuan took out some resin collected yesterday evening.

Looking at the resin, he couldn't help but think of the lacquer tree he found earlier.

It is a pity that it is no longer possible to carry out the second painting.

Part of the wood paint collected for the first time was used on the bamboo curtains for paper making, and some materials were added to the generator.

However, if you collect wood lacquer for the second time in a short period of time, it will hurt the lacquer tree, and it is likely to directly cause the lacquer tree to die.

Otherwise, the natural wood lacquer refined and then soaked in sackcloth will be a good insulating material.

Now he can only choose resin and other items to make insulation materials.

After a night of standing still, some of the collected resins have crystallized and have different colors. Some resins are slightly yellow, some are maroon, and some are milky white.

A large part of the audience in the live broadcast room had never seen these strange-colored resins, and they spoke with interest.

[Is this resin?I thought it was resin at first. 】

[I have seen peach gum, my mother often drink this thing, said it can beautify the skin. 】

[Do natural resins have so many colors?I always thought that the color of the resin is only after the pigment is added. 】

[Don't ask us about the big bird, we are very busy with the big bird, and I have never seen resin for the big bird! 】

[What kind of tiger and wolf talk is this upstairs?Tell me how old are you?five centimeters? 】

[I have seen pine oil extraction, translucent and yellowish, but it is indeed white after crystallization, I don’t know if it is resin. 】

[Resin cannot be used directly as an insulating material. Most resins are liquid, and it takes a long time to harden completely. 】

Han Yuan glanced at the barrage, and while digging out the collected resin from the bamboo tube and putting it into a glass, he answered the audience's questions.

"Broadly, resin refers to any polymer that is a base material for plastics."

"In the modern plastics industry, any polymer or prepolymer without additives that is used as a raw material for plastics can be called a resin.

"There are two types of resin."

"One is natural resin, such as amber, which is formed from the resin naturally secreted by coniferous plants."

"The other is a synthetic resin."

"And these two materials can be turned into plastics by adding plasticizers or plasticizers after melting."

"So the natural resin can be used as an insulating material after being plasticized."

"But natural resin, especially the resin mined in the way I do, has a lot of water and impurities in it."

"So further processing of these resins is required to turn them into solids for insulation."

After digging out the resins of different colors in several bamboo tubes, Han Yuan found a container that looked like a glass from the ground nearby.

The container also comes with a glass handle and lid with a small hole in the center.

This is a glass that was just made this morning.

Of course, the role is not to drink tea, but as a kerosene lamp.

Put some fuel on it, soak a small strand of hemp rope in the fuel once, and pass it through the small hole, then it can be used as a simple kerosene lamp.

As for why it is not made into a kerosene lamp shape but a cup shape.

There is no way for Korean won. After all, the mold structure of the kerosene lamp is more complicated than that of the glass, and the glass is much simpler and less troublesome.

The oil lamp is lit, and the glass containing the resin is placed on the wire mesh to start heating.

The originally crystalline resin of various colors begins to melt as the temperature rises.

Taking advantage of the time of melting the resin, Won started making molds.

After a while, the resin inside the glass began to bubble.

It was the first time for many viewers to see the resin melting process, see the bubbles in the glass, and asked curiously what was going on.

After the mold was made, Han Yuan got up and glanced at the melting and bubbling resin in the glass after seeing the problem, and said.

"This is a manifestation of the impurity of the resin, and it has something to do with the way I mine the resin."

"These resins contain impurities, moisture and air, so during the heating process, some of the moisture will evaporate, and some of the air contained in it will be squeezed out, and this bubbling phenomenon will occur."

"It's normal."

"The first melting is not to transform the resin into plastic."

"Instead, it is melted and expelled part of the moisture and air in the resin, allowing the impurities with a larger specific gravity to sink to the bottom."

"This way we can get some resins that are relatively pure and contain less water."

"At the same time, in this process, some volatile substances in the resin will be accelerated to volatilize into the air due to heating, and the other part will solidify into a solid over time."

"In fact, natural amber is formed in this way, but the purification process of heating is omitted."

"On the antique street, more than 90.00% of the emeralds, amber, and jade on the street stalls are made of resin. You think you have spent hundreds of dollars to pick them up, but in fact they cost less than a few dollars. .”

"And it's not natural resin, it's artificial."

Waiting for all the resin in the glass to melt, Han Yuan took the newly made glass rod in the morning and stirred it, hung some resin to check the status, and then turned off the light.

Waiting for the glass to cool down, Won clamped it down, poured the upper layer of clear and translucent resin solution into another glass, and started heating again.

With the second heat, the air bubbles in the resin are much less, but still there.

The lamp under the iron frame was still burning slowly until the bubbles in the resin stopped coming out.

Han Yuan quickly clamped the glass with iron tongs tied with a layer of tiger cat skin, and then poured it into the mold.

The mold is made of bamboo as thick as a girl's little finger. The bamboo partition inside is gone, and a straight copper wire is suspended inside.

As the high-temperature resin inside the glass is slowly poured into the mold, the copper wire is quickly wrapped by the resin.

Waiting for the copper wires in the mold to be completely covered by the resin, Han Yuan quickly put down the glass, then clamped the bamboo tube steadily, and quickly dipped the resin inside into cold water, and suddenly a burst of hot air came out of the water, forming water mist.

This step is condensation and solidification, which is similar to the quenching of ironware, and the direct high and low temperature contrast is used for hardening, which saves the long time required for the natural hardening of the resin.

As long as the hardened resin is not reheated to the melting point, it will not melt again.

Take out the cooled mold, peel off the outer bamboo sheet, the resin is translucent, and the inner copper wire is tightly wrapped.

But holding the cooled resin in his hand made Han Yuan sigh and shook his head involuntarily.

Although the resin hardening after cooling is successful, the disadvantages are too obvious.

This hardened resin cannot be bent like a household wire.

A little force will break the outer resin and expose the inner copper wire.

It is equivalent to saying that if he wants to use this resin to make insulating materials, he must ensure that the circuit is stable and will not be bumped or anything, otherwise, once the outer resin is cracked, electricity will also leak.

(End of this chapter)