The density of the glass and its other physical and chemical properties

Glass Properties

Glass - an inorganic material that can be made in the workplace, as well as exists in nature in the form of minerals. The structure is an amorphous solid that has many modifications.That is why there is a great variety of types of material.Each of them has its composition, physical and chemical properties.

At the moment, regardless of the type of production has reached such results that the material properties are improved with each passing day.For example, today it includes parameters such as resistance to aggressive substances, transparency, bioactivity, strength, reflectivity, electrical conductivity, heat resistance and others.In a conventional solid state, it is not subjected to atmospheric precipitations.Precisely because it is used in various fields, including for exterior facades.

chemical composition of glass

produce this material from the glass-forming substances.These include the following oxides and fluorides: GeO2, SiO2, TeO2, B2O3, P2O5, AlF3.Therefore, depending on the main component is isolated and used various glass.For example, oxide (silica, silicate, phosphate, germanate) fluoride.Typical silicate glass is made by melting the composition of soda, lime and silica sand.

Speaking of quartz glass, it has the following formula: SiO2.It is made by melting kremnezёmistyh substances (rock crystal, quartzite).It can also consist of klastofulguritov, that is to have a natural origin.It formed a very interesting way, by lightning in the deposits of quartz sand.

Physical properties

What is characteristic of glass-specific parameters, we write below.Firstly, density - again depending on the species, but the quartz glass has a minimum, and it is 2200 kg / m3.A glass which include oxides of bismuth, lead, tantalum, have a density of about 7500 kg / m3, silica (or glass window) - 2500-2600 kg / m3.The second important factor - thermal conductivity of glass.In general, it ranges from 0.711 to 13.39 W / (m * K).

Thirdly, proportion of glass is a variable which depends on the density.However, it is calculated by a specific formula, which necessarily include Weight, thickness.Thus, for example, the weight of the glass, which has a thickness of 1 mm and an area of ​​1 m2 is 2.5 kg.Fourth, fragility - index, which determines the degree of the possible destruction of the material from natural influences.

This property can also be reflected in toughness, which is increased by adding bromine in the process of manufacture.Thus, in the silica glass, it is equal 1.5-2 kN / m.Fifthly, strength , which may be from 500 to 2000 MPa.Sixthly, hardness glass.It is measured on the Mohs scale and can range 6-7 Unit.Depending on the hardness of the added impurities.If the composition to make alkaline oxides, it will be less.It will be a soft lead glass.The most firmly believes quartz.

Before choosing one or another type of material, determine which characteristics and properties are important to you.Next, explain that the seller-adviser, and he will offer you the most suitable type.