Mysterious foam fire of veteran missiles

After 15 years of research, Mr. Pham Gia Tuan released a soundproof foam foam furnace.

Following us in an old factory in Tu Son town (Bac Ninh), Mr. Pham Gia Tuan (61 years old) confided: "Since the 1980s, after returning from the army, I had the idea of ​​making things. I used to work on thermal missiles A72 under Air Defense - Air Force so I have knowledge about this field. "

He recalled on July 20, 1999, the pink night dance hall at 78 Hang Chieu (Hanoi) was burnt, heavily damaged by people and property.

Then in 2002, a terrible fire in the ITC international trade center building (Nam Ky Khoi Nghia, District 1, Ho Chi Minh City) killed 60 people.

Mr. Tuan said: " The cause of fire in ITC is when welding bolts positioned on the ceiling, welders let the temperature scale about 1,700 degrees shot into foam soundproof, causing rapid fire spread and big fire" .

From the experience of more than 20 years of construction and installation of foams for singing stalls in Hanoi, Tuan said: The type of foam used for sound insulation is an easy-to-fire material, once it is burned, it is difficult to extinguish because the fire is smoldering inside.

Because of this, Tuan cherished the intention to produce a non-flammable foam insulation.

Mr. Pham Gia Tuan introduced fireproof foam.

Recalling that period, Tuan said: "I often talk and make friends with many teachers who teach at the Hanoi University of Technology. When I say this intention, my friends all laugh and wager, if anyone finds The fire retardant material instead of foam will be covered with a coffee bag a month. "

My friend thought the talk was a joke, but I decided and did it really.

15 years of research and waiting

"Foam is the" culprit "that causes fires to be fierce and difficult to extinguish karaoke, sucking almost all the walls and ceiling of the theater room, salong chair in the shop is also made of this material" - Mr. Tuan determined.

The advantages of this type are sound insulation, good thermal insulation and sound absorption to prevent sound from reverberating. In particular, this is a cheap material, so there has been no substitute for the past few years. Even modern recording studios and television stations are also used.

According to Tuan, this material is easy to catch fire so if the fire will flare up very quickly, once it catches fire, it is difficult to extinguish because of underground fire because oxygen is available in the pores. It is worth mentioning that, when burning, smoke emitted black smoke, carrying a lot of toxic vapors that cause suffocation, causing death quickly.

Mr. Tuan experimented with fireproof foam.

"Just making me think about how to solve the flammability of sucking by limiting the speed and the level of fire, " Tuan said.

Through hundreds of trials, successive failures, falling health also made him sometimes frustrated, wanting to stop. However, the situation of fire and explosion all over the country was complicated, making him unable to sit still.

He said: "The first month I rushed to study, my friends and neighbors knew everyone who thought I was an unusual person because I ran to Bac Ninh all day and ran back to Hanoi, day and night. The head in the workshop, everyone thought that it was foam, how could it not be burnt? ".

It took more than four months, from the day I started to study, that I had just finished the finished product, so glad he ran to meet some good coffee friends to do experiments for people to see, not unexpected, Everyone was amazed at his product.

Mr. Tuan said that at the same time, he sent a research project to many related agencies and newspapers, but due to the market mechanism, karaoke services developed rapidly, so that day, the invention was not paid attention. .

Sale off

Foam type after 15 years of Mr. Tuan's research.

When asked why technology manufacturing was successful for more than 10 years but still has not brought products to life, Mr. Tuan said: "My original product made it fire resistant but the price was high. 5 times more than regular foam so no one gets the technology ".

"Back then, many karaoke bars rejected my product because of the high price, the other type of sound was similarly soundproof but the price was cheap" - Mr. Tuan said.

Sharing about 15 years of thick work of his research, Mr. Tuan confided: "After many researches, I have found a method of manufacturing more quality fireproof foam which cost 4 times lower than the time. At the beginning, all my machines and technology were perfect so that when needed, it would go into operation. "

"Now I just want the product to be recognized by society and authorities" - he spreads his heart.