The history of glass goes back a long way, and we've discussed it in previous articles. There is no doubt that glass has infinite value to human beings. But it's a point that people often overlook. It was not until 2022, when the United Nations declared this year as the International Year of Glass, that people felt the extraordinary significance of glass. Glass, the humble building material, is finally getting the recognition it deserves.
As we all know, glass is naturally transparent. So when it's used as a container, we often ignore it. For example, shortsighted people often wear glasses, through which we can see clearly. People will tell you that you have good eyesight, but they won't tell you that your glasses are great. For example, light comes in through Windows to make the room look brighter. People will only say that the light is good today, but not that the window is good. Glass is like a natural tool. It connects us with the world and allows us to see this beautiful scene. But in the end, we focus on the result, but often forget the process. But what is glass for?
Glass can be used as a small container in science. In the field of renewable energy can also be used to make solar panels. Glass is also being used more and more in aviation. Versatile and versatile, glass is one of the oldest man-made materials. Its impact on us and even society is unmatched by other materials. So it is well deserved to be declared International Glass in 2022.
What is glass made of?
This question is not difficult to answer. Glass is generally made of sand, limestone and soda. Each of these ingredients gives the glass its unique properties. Sand becomes transparent after melting, which gives glass its transparent properties. Soda lowers the melting point and makes glass faster. Limestone, on the other hand, has hard properties that make glass stronger. But in addition to these simple components, in fact, glass has many other components. Most of them are related to specific functions of glass. So it's not that easy to define a piece of glass.
In many ways, the structural composition of glass is a mystery. The internal structure of glass is not as orderly as that of a real solid. It has no rigid rows of crystalline molecules. But did you know that molecules in glass are mobile! Although the speed of movement is a little slow. So glass is neither a solid nor a liquid. It's something in between. So it's called an amorphous solid.
The application of glass in four fields
Glass has a very unique structure and endless applications. The following mainly explains the application of aviation ceramics, glass ceramics, glass fiber and metal glass. Let's take a closer look at the uses of glass in various fields.
Aerospace ceramics
Aerospace may not be a field we know about. But it is true that glass ceramics are more and more widely used in them. Ceramics, as we often say, are mainly made of clay. But glass ceramics have the same chemical composition as glass. The structural volume of the crystal is slightly larger. This unique composition can make glass with high heat resistance, stability, high shock resistance and so on. Improved fuel efficiency and reduced aircraft weight are just some of the advantages that make them suitable for aircraft. Now the global push for low-carbon living is also putting pressure on airlines to reduce carbon emissions. Ceramics also play an important role in helping manufacturers create more environmentally friendly aviation.
Metallic glass
Metallic glass is a kind of engineering material with high performance. It has the properties of both metal and glass. This makes it a unique material. The reason is that metallic glass has excellent electrical properties. Metallic glass, like ordinary glass, is amorphous. This material has strong resistance to corrosion and fracture. There is a relatively strong hardness, very tough, a little brittle but opaque.
Metallic glass is often widely used as the core of an amorphous metal transformer distributor (AMTD). Similarly, it is often used in mobile phones, magnetic products, sensors and other electronic instruments. On a global scale, the metal glass market is also very extensive and stable. Manufacturers are focusing on developing metal alloys for new applications such as aerospace, automotive and sports. More and more new players are working with existing players to bring apps to market.
Glass fibre
Glass fiber is a fine fiber obtained by melting spinning glass. It usually comes in four different forms: strand, glass wool, yarn and thick thread. Glass wool is pure glass fiber and can be used directly for insulation. The glass fiber is light in weight, high in strength and not easy to break. Because of these properties, it can be molded into a variety of complex shapes. Fiberglass also has excellent thermal insulation and electrical properties. Due to its properties, glass fiber is widely used in the manufacture of conforming materials and insulation applications. Global glass fiber demand in 2020 is about 7.86 million tons. The top ten glass fiber manufacturers can occupy two-thirds of the entire market. With the expansion activity of manufacturers increasing. As well as the growing demand for glass fiber, this market is also expected to grow.
The physical properties and importance of glass
The reason why glass can have so many applications and has an important position in various fields. This is inseparable from its unique physical properties. Glass is an amorphous material. This makes it exhibit different properties from crystalline materials in some respects.
Transparency: The transparent properties of glass are well known. It is also one of the most remarkable features of glass. In fields such as architecture and optical equipment, glass has become a unique choice. Transparent glass allows light to pass through efficiently without being blocked. Not only does it allow a view of the interior from the outside, but it also allows natural light to enter the building. Therefore, it is often used in Windows, glasses, optical fiber and other fields.
Chemical stability: The chemical stability of glass ensures that it does not change its form in various chemical environments. Always stay the same. This makes glass containers ideal for storing and transporting chemicals. Glass has a good tolerance to most chemicals. It is not susceptible to corrosion or reaction, so it has a great role in the chemical industry. Especially in laboratory and pharmaceutical industries.
Heat resistance and insulation: Glass has good heat resistance and electrical insulation. Having these two characteristics makes it suitable for use in electronic products and high temperature environments. Of course, different types of glass are also different in heat resistance. This heat resistance makes quartz glass stable at high temperatures. Therefore, glass is also commonly used in the manufacture of light bulbs, heaters, and other high-temperature equipment.
Plasticity and variety: Although glass is resistant to heat. But glass can also be shaped into various shapes when heated to a certain temperature. This gives it a high degree of flexibility in various designs and artistic creations. The plasticity and variety of glass allow it to meet different design needs. Different manufacturing processes can produce a wide range of glass products, from thin films to thick plates, from smooth to frosted.
Environmental impact and sustainability of glass
The production of glass will inevitably have a certain impact on the environment. Therefore, how to achieve the sustainable production and use of glass has become an important issue at present.
The glass production process requires a lot of energy, especially during the high-temperature melting stage. In addition, carbon dioxide emitted in glass production is also one of the important sources of environmental pollution. So in order to reduce the impact on the environment, many suppliers are also beginning to experiment with energy-saving technology and renewable energy manufacturing glass. Low-E glass, for example, can effectively reduce the energy consumption of buildings. And high-efficiency insulating glass can improve energy efficiency. By developing and promoting these environmentally friendly glass products, the environmental impact of glass production teams can also be further reduced.
At the same time, glass is also a completely recyclable material. Old glass can be remelted to make new glass. This reduces the need for raw materials and reduces energy consumption and carbon emissions in the production process. Many countries have also established glass recycling systems. The recycling of glass has been greatly promoted.
Sum up
As a unique material, the importance of glass runs through all aspects of technology, industry and daily life. Glass's transparency, chemical stability, heat resistance and plasticity make it play an irreplaceable role in construction, electronics, energy and other fields.
Although glass production does have an environmental impact. However, with the advancement of technology and the promotion of low-carbon awareness, many green glass technologies are also being implemented. Looking ahead, glass will continue to play an important role in various fields. Promote social progress and scientific and technological innovation.
