What are the basic properties of glass, what are the properties of glass?

1. Isotropic: The atomic arrangement of glass is irregular, and its atoms are statistically uniform in space. Ideally, the physical and chemical properties of homogeneous glass (e.g., refractive index.

Hardness, modulus of elasticity.

Coefficient of thermal expansion, thermal conductivity, electrical conductivity.

etc) are the same in all directions.

2. No fixed melting point: The transformation of glass from solid to liquid is carried out within a certain temperature region (i.e., softening temperature range), which is different from crystalline substances in that there is no fixed melting point. The softening temperature range tg t1, tg is the transition temperature, t1 is the liquidus temperature, and the corresponding viscosities are 10 dpa·s and 10 dpa·s, respectively.

3. Metastability: The glassy substance is generally obtained by the rapid cooling of the molten body, and when it transitions from the molten state to the glassy state, the viscosity increases sharply during the cooling process, and the particles do not have time to form crystals in a regular arrangement, and the latent heat of crystallization is not released.

From the mechanical point of view, glass is an unstable high-energy state, for example, there is a tendency to transform into a low-energy state, that is, there is a tendency to crystallize, so glass is a metastable solid material.

4. Gradual and reversible: The process of glassy substances from the molten state to the solid state is gradual, and the changes in their physical and chemical properties are also continuous and gradual.

Depending on the type, glass has different properties. The following is introduced as follows: 1. Good perspective and light transmittance (the visible light transmittance of 3mm and 5mm thick lens glass is 87% and 84% respectively).

The transmittance of near-infrared heat rays in sunlight is high, but it can effectively block the far-infrared long-wave heat rays generated by the refraction of visible light to the indoor wall roof, floor, furniture and fabrics, so it can produce an obvious "warm room effect". The net glass has a low transmittance to ultraviolet rays in sunlight;

2. Sound insulation and certain thermal insulation performance;

3. The tensile strength is much smaller than the compressive strength, which is a typical brittle material;

4. It has high chemical stability, under normal circumstances, it has strong resistance to acid, alkali salt and chemical kit gas, but long-term exposure to aggressive media can also lead to deterioration and destruction, such as weathering and mildew of glass will lead to appearance damage and reduced light transmittance;

5. The thermal stability is poor, and it is easy to explode in extreme cold and heat. 1. Colored flat glass can be put together into various types of balls, and has the characteristics of corrosion resistance, erosion resistance, and easy cleaning.

2. Glazed glass has good chemical stability and decoration.

3. Embossed glass, sprayed glass, milky glass, carved glass, and ice glass have various colors, perceptions, and glossy effects according to the different processes of making patterns, and are rich in decoration. 1. Tempered glass has high mechanical strength, good elasticity, good thermal stability, and is not easy to hurt people after breaking, and is not easy to self-detonate.

2. The fragments of the wire-lined glass will not fly away after being impacted or the temperature changes suddenly; It can prevent the spread of flames for a short time; It has a certain anti-theft and anti-robbery effect.

3. Laminated glass has good transparency, high impact resistance, laminated PVB film adhesive to protect fragments from scattering and hurting people, and has high durability, heat resistance, humidity resistance and cold resistance. 1. Tinted glass can effectively absorb solar radiation heat and achieve the effect of heat shielding and energy saving; Absorbs more visible light and softens the light that passes through; Strong absorption of ultraviolet rays to prevent the impact of ultraviolet rays on the room; The color is bright and durable, which increases the appearance of the building.

2. Coated glass has a good thermal insulation effect and is easy to produce light pollution to the external environment.

3. The insulating glass has good optical properties, good thermal insulation performance, anti-condensation and good sound insulation performance.

The basic properties of glass include the following aspects:

1。Transparent. 2。tight, impermeable and waterproof.

3。Poor conductors of heat.

4。Amorphous and has no fixed melting point. High temperatures will soften.

Universal properties of glass. It has a high hardness. Greater brittleness. It has high transmittance in a certain spectral range. Performance gradation. Metastability.

Glass. 1.Transparent.

2.Poor water absorption.

3.No rust.

4.Fragile.

1. Advantages of glass:

The transparency of the glass is very good, pollution-free, fashionable, rich in shape, widely used, and low cost. The mold forming size is accurate, and the production of thin and light products can be made, and the colors are rich and changeable, and the craftsmanship is exquisite.

2. Disadvantages of glass:

It is fragile, it is not easy to make heavy products, and it is impossible to make hollow products (ceramic basins are hollow products, which are made of the upper and lower parts after clamping and firing) The surface is not easy to take care of, and it is easy to have water stains.

A note about glass

1. In order to avoid unnecessary losses during transportation, we must pay attention to fixing and adding soft pads. It is generally recommended to transport it in an upright way. Vehicles should also take care to maintain steady, slow speeds.

2. If the other side of the glass installation is closed, pay attention to clean the surface before installation. It is best to use a special glass cleaner, and it is best to wait for it to dry and verify that there are no stains before installation, and it is best to use dry and bent potato construction gloves when installing.

3. The installation of glass should be fixed with silicone sealant, and it should also be used in conjunction with rubber sealing strips in the installation of windows.

4. After the construction is completed, it is necessary to pay attention to the anti-collision warning signs, which can generally be prompted by non-dry stickers and colored electrical tape.

5. Do not collide with sharp objects.

Glass: a relatively transparent solid substance, which forms a continuous network structure when melted, and gradually increases in viscosity and hardens without crystallization during cooling.

Features: 1. Isotropy in all directions: the properties of homogeneous glass in all directions, such as refractive index, hardness, elastic modulus, thermal expansion coefficient, etc., are the same;

2. Metastability: when the melt is cooled into a glass body, it can retain the structure at high temperature at a lower temperature without changing;

3. Reversible graduality: the conversion from molten state to glass state is reversible and gradual;

4. Continuous lead burial: the physical and chemical properties are continuous with temperature during the transition from molten state to glass state.

1. Waterproofness: Because the surface of the glazed tile is coated with a bright glaze layer, it does not seepage, does not accumulate water, and has strong waterproofness.

2. High strength: Western-style glazed tiles are fired at high temperatures, and the round front meets the national standard, which can withstand more than the weight of the human body, and can withstand the wind and sun for a long time.

3. Strong adaptability: due to the unique low water absorption characteristics of Western-style glazed tiles, it can not only be used in the southern region, but also suitable for the cold climate in northern China, and keep the color unchanged under long-term sunlight.

4. Noise reduction: Due to the unique process design of Western-style glazed tiles, it has the properties of good adaptation and noise reduction, and does not have moss cavities, and does not need artificial care.

5. Rich accessories: In order to make the roof structure complete and beautiful, Western-style glazed tiles have 14 kinds of main tile accessories that do not collapse, making the building more artistic.

1. Waterproofness: Because the surface of the glazed tile is coated with a bright glaze layer, it does not seep water, does not accumulate water, and the poor silver has strong waterproofness.

2. High strength: Western-style glazed tiles are fired at high temperatures, meet national standards, can withstand more than the weight of the human body, and can withstand the wind and sun for a long time.

3. Strong adaptability: due to the unique low water absorption characteristics of Western-style glazed tiles, it can not only be used in the southern region, but also suitable for the cold climate in northern China, and keep the color unchanged under long-term sunlight. Hail skin.

4. Noise reduction: Due to the unique process design of Western-style glazed tiles, it has the properties of good adaptation and noise reduction, and does not grow moss, and does not need artificial care.

5. Abundant accessories: In order to make the roof structure complete and beautiful, Western-style glazed tiles have 14 kinds of unused main tile accessories, making the building more artistic.

The new glass is divided into safety glass, energy-saving glass and electric glass, and its characteristics and uses are as follows:

1. Safety glass features:

Safety glass has high mechanical strength and strong impact resistance. Its main varieties are tempered glass, laminated glass, laminated glass and titanium glass. When the safety glass is broken, its fragments will not hurt people, and it has the functions of anti-theft and fire prevention.

Depending on the original glass used in production, safety glass has a certain decorative effect.

Uses: Because safety glass has good mechanical properties and thermal stability, it is widely used in construction engineering, transportation and other fields. Flat tempered glass is often used as doors and windows, partition walls, curtain walls and windows, furniture, etc., and curved glass is often used in automobiles, trains and airplanes.

2. Characteristics of energy-saving glass:

Energy-saving decorative glass usually has a pleasing appearance color, but also has a special ability to absorb, transmit and reflect light and heat, with the exterior wall window glass curtain wall of the building, can play a significant energy saving effect.

Uses: Energy-saving glass is widely used in various high-end buildings, exterior walls, and as windshields for cars and boats. Energy-saving decorative glass commonly used in buildings includes heat-absorbing glass, heat-reflecting glass and insulating glass.

3. Characteristics of dimming glass:

The dimming glass can be switched between transparent and opaque states by various methods such as electric control, temperature control, light control, voltage control, etc. Due to various constraints, almost all of the dimming glasses that have achieved mass production on the market are electronically controlled dimming glasses.

Uses: Dimming glass can be used in office areas, conference rooms, monitoring room partitions, shopping malls, banks, jewelry stores and museums, exhibition hall windows, counter bulletproof glass and display cabinet glass.