The difference between glass and colored glass Glass is a non-inorganic material. It is an inorganic thermoplastic polymer in structure. It can be formed when it is higher than 650oc. After cooling, it has the characteristics of transparency, corrosion resistance, wear resistance and compression resistance. The thermal expansion coefficient of glass is lower than that of steel, it is a poor conductor of electricity and heat, and it is a brittle amorphous material. Specific Gravity: 2.46~2.5 Linear Expansion Coefficient: 9~10x10-6/oc(~350oc) Specific Heat: 0.2(0o~50oc), Practical Surface Tensile Strength: 500kgf/cm2 The name of glazed originates from Tang Dynasty, which refers to the addition of glass raw materials The lead oxide is called in crystal glass. The proportion of lead oxide added varies according to the customary definitions of various countries. Generally speaking, when the proportion of lead oxide is above 24%, the transmittance and refractive index of the glass are both good, and it is also heavier, softer and more durable. Suitable for firing into delicate glass works of art. Generally, when European and American countries talk about crystal utensils, they refer to the use of this kind of crystal glass material, and its price is not comparable to that of ordinary glass. Artificial glass "Liu Li" is glass. It is only called crystal when it is very crystal clear with the addition of lead. If the natural crystal natural glass energy or growth time is very different. This must be understood. Like Austria or Italy, high-priced crystal cups, glass plates and wine bottles, or crystal glass for decoration, all kinds of cute animals, crystal lotus glass for Buddhism, crystal chandeliers, almost all are crystal glass glass! No magnetic energy. Crystal glass is actually a glass made of natural crystal, which is often heard of lead glass. Adding lead to the glass can increase the refractive index of the glass, and also reduce the hardness to make it easier to ponder; the beautiful crystal cups generally sold are also lead glass. The difference between crystal and glass Crystal and glass look very similar, but they are two completely different substances. The main differences are in the following five aspects: 1. Different materials Crystal is a crystal of silicon dioxide, while glass is just a molten mixture containing silicon dioxide. Second, the effect is different Glass only has a decorative effect, and crystal has a piezoelectric effect in addition to its decorative effect, which has a special health care effect. Third, the price is different The unit price of crystal is several times or even dozens of times higher than that of glass. Fourth, the physical properties are different 1. Crystal is a crystal with high hardness (Mohs level 7), while the hardness of glass is lower (Mohs level 5.5), crystal can draw marks on glass, and vice versa. 2. Crystal is a crystalline body with good thermal conductivity. It feels cold when licked with the tip of the tongue. And the glass appears warm. 3. Differentiate with polarizer, crystal can transmit light, but glass cannot. We can easily distinguish crystal and glass based on their different physical properties. 5. Different processing technology Glass can be hot-cast, saving material and labor, and low cost. Crystals are crystals, which cannot be reversed after heating and melting, so hot casting cannot be used, only cold processing methods such as cutting and grinding can be used. Expensive materials and labor, high cost.
