What is the silicon content of ordinary glass in glass 20

1. Raw material composition: high borosilicate glass contains boron trioxide and silica, and the amount of ordinary glass is higher, and the boron content can even reach 14%, and the silicon content can reach 80%. The silicon content of ordinary flat glass is about 70%, and ordinary glass generally does not add boron, but sometimes it is up to 1%.

2. Glass characteristics: Gaopeng glass has low expansion coefficient, high softening point, and good resistance to quenching and heating. Its expansion coefficient is about 32 33*10 (-7), and ordinary glass is about 80-100*10 (-7); It can withstand quenching and heat and cold up to about 200 300 degrees Celsius.

3. Uses: Mainly used for the production of glass instruments, glass pot lids, chemical equipment, etc.

Raw material composition: high borosilicate glass contains Sanqingshen boron oxide and silica The amount of ordinary glass is higher, and the boron content can even reach 14%, and the silicon content can reach 80%. The silicon content of ordinary Pingyu nuclear plate glass is about 70%, and ordinary glass generally does not add boron, but it also adds up to 1% when there is a source

According to your question, how much silicon is in photovoltaic glass, the answerer will inquire for you, and the purity of monocrystalline silicon wafers for photovoltaic requires a silicon content of between 4N-6N. Monocrystalline silicon can be regarded as the purest substance in the world, and general semiconductor devices require silicon with a purity of more than six 9s. The requirements for large-scale dust integrated circuits are higher, and the purity of silicon must reach nine 9s.

Photovoltaic silicon wafers: Due to the photoelectric effect and the obvious advantages of monocrystalline silicon, people use silicon wafers to complete the conversion of solar energy to electrical energy. In the photovoltaic field, monocrystalline silicon-containing cells with rounded corners are generally used.

**Less expensive electro-polysilicon wafers are also used, but the conversion efficiency is lower.

Hello dear, glass-grade quartz has a silicon content of 90%. SiO2 90-99% Fe2O3, refractory 1750 is made of high-quality oak to natural quartz stone, which is carefully selected and finely processed. The particle size range is 1—, which can be processed according to user requirements.

Uses: manufacturing glass, refractory materials, smelting ferrosilicon, metallurgical fluxes, ceramics, abrasive materials, casting quartz sand, etc., in the construction of the use of its strong resistance to acid medium erosion, acid-resistant concrete and acid-resistant mortar.

Different glass contents are different.

Quartz glass. The Sio content is greater than that, the coefficient of thermal expansion is low, the high temperature resistance is good, the chemical stability is good, the ultraviolet light and infrared light are transmitted, the melting temperature is high, the viscosity is large, and the molding is difficult. It is mostly used in semiconductors, electric light sources, optical guide communications, lasers and other technologies and optical instruments.

High silica glass. The SiO content is about 96%, and its properties are similar to those of quartz glass.

Soda-lime glass. With SIO content as the mainstay, it also contains 15% Na2O and 16% CAO, which is low-cost, easy to form, and suitable for large-scale production, and its output accounts for 90% of practical glass. It can produce glass bottles and jars, flat glass, utensils, light bulbs, etc.

Lead silicate glass. The main components are SiO2 and PBO, which has a unique high refractive index and high volume resistance, and has good wettability with metal, which can be used to make light bulbs, vacuum core columns, crystalline glassware, flint optical glass, etc. Lead glass, which contains a large amount of PBO, blocks X-rays and rays.

Aluminosilicate glass. With SiO2 and Al2O3 as the main components, it has a high softening and deformation temperature, and is used to make discharge bulbs, high-temperature glass thermometers, chemical combustion tubes and glass fibers.

Borosilicate glass. With SiO2 and B2O3 as the main components, it has good heat resistance and chemical stability, and is used in the manufacture of cooking utensils, laboratory instruments, metal welded glass, etc. Borate glass is mainly composed of B2O3, has a low melting temperature, and is resistant to sodium vapor corrosion.

Borate glass containing rare earth elements has a high refractive index and low dispersion, which is a new type of optical glass. Phosphate glass, with P2O5 as the main component, has a low refractive index and low dispersion, and is used in optical instruments.

If you ask about the content of silica in glass, the silica content in flat glass is generally about 71-72%, and if you ask how much silica sand is used in the glass raw material formula, the general silica sand dosage should account for about 65-70% of the total amount of materials.

Silica sand is the main raw material for glass production, it mainly introduces SiO2 in glass and accounts for about 72 in the glass formulation, A1203, accounts for about 2 3, and they play a skeleton role in the chemical structure of glass.

Carbon atoms have 4 electrons in their outer electron shell, and the same as carbon, silicon (Si), germanium (Ge), tin (Sn), and lead (PB) atoms also have 4 electrons in their outermost electron shells. These five elements are in group a of the periodic table, and we call them carbon group elements.

Discussion 1: Based on the knowledge of the periodic law of the elements, try to deduce some regularities of the changes in the properties of carbon group elements.

With the increase of the number of nuclear charges, some properties of carbon group elements change regularly. For example, from top to bottom in the periodic table, the radius of the atoms of the elements gradually increases, the ability to lose electrons gradually increases, the ability to gain electrons gradually decreases, and the trend of non-metallicity to metallicity is obvious. Among the elemental elements of the carbon group elements, carbon is a non-metal; Although silicon looks like a metal, it mostly shows non-metallic properties in chemical reactions, and is usually considered to be non-metal; Germanium is more metallic than non-metallic; Both tin and lead are metals.

The valencies of carbon group elements are mainly +4 and +