Glass smashed without breaking

Falling from 3m height is still not broken, durable even when pouring boiling water abruptly . That is the characteristic of the cups, plates, bowls, cups made of durable glass made by the Experimental and Production Center. Mine production - metallurgy Tam Hiep fabricated.

Nearly 1 year ago, upon hearing that the Tam Hiep Center for Experimental and Mining - Metallurgy, the Institute of Mining and Metallurgy Science and Technology (Ministry of Industry and Trade) studied a new type of glass to withstand strong impact. , anti-fouling and easy to clean, Mr. Pham Nang Thuy (Thanh Tri, Hanoi) directly went to the Purchasing Center to use and found it very satisfied.

Anti-fouling, easy to clean

'My family opened a food store so it often broke the cup, dishes, bottles, or broken by pouring boiling water. In addition, after each use, leftovers, tea, wine cling to cups, cups, plates make cleaning very difficult. However, from the day of using super durable glass products, that situation is no longer available , 'Mr. Thuy said. To prove, Mr. Thuy took a cup and stood on the table, dropping it on the floor of the flower floor to fall at a height of 3 meters but the glass cup only bounced without breaking.

Dr. Nguyen Xuan Khoa, the director of the center said that the normal glass is produced by the method of wind (also called heat), the glass is cooked at a temperature of nearly 8000C then the fan blows with speed extremely strong. Also the durable glass is produced by the technology of ion exchange, whereby the potassium diffused ions enter the glass surface inserted into the position of the smaller diameter sodium ion and make the glass surface 'compacted'. 'Tighten the tension.

An ultra-durable glass food container.(Photo: MC)

As a result, glass is able to withstand high thermal shock, for example, when transferring products from the freezer to a microwave or immediately pour boiling water into a bowl containing frozen at a temperature of minus 200C or hot glass 1000C Drop right into cold water without cracking. The mechanical strength of the product also increases from 2 to 3 times, which can be stacked directly on each other without the lining. Super durable glass has a very smooth surface so it has anti-fouling and easy cleaning effect.

"In particular, this type of super durable glass does not contain lead, cadmium or substances harmful to health such as some types of plastic or ceramic glaze on the market ," Dr. Khoa said.

Start to come to life

Super durable glass of the Institute of Mining and Metallurgy Science and Technology is being used in the production of household items such as cups, bowls, plates, bottles. Since 2007, the research team has successfully applied the technology to produce ultra-durable glass fabrication for thermal shock lamps at Cam Ranh and Vinh airports . and over 4 years of use and quality. of these beacon lamps are highly appreciated by extremely low breakage and failure rates.

Dr. Nguyen Xuan Khoa said that the technology of producing super durable glass has the potential to deploy applications in the production of heat-resistant glass for gas stoves, microwave shields . According to the Center's research. Experiment and production of Tam Hiep mine and metallurgy, currently almost 100% of gas stove glass, microwave shield, dishes used in microwave oven imported from abroad. If produced in Vietnam, the cost is only 40-70% of the same products of Korea, Western Europe, but the quality is similar.

In addition, the Center is also developing a research project to produce heat-resistant glass for fire-proof partitions for high-rise buildings with the cost of only half of all kinds of refractory glass of foreign countries. Test results at the Center showed that the fire at the temperature of 10000C, the normal glass can only withstand about 30 seconds, the tempered glass can withstand about 2 minutes, while the fireproof glass can withstand 1-2 hours clock.