Ceramics, pottery and porcelain are really not the same thing!

Speaking of chinaware ceramic, most people who don't understand will mistakenly think that there is no difference between porcelain and pottery, or that it is made of clay. First of all, we must emphasize a concept, ceramic ceramics, chinaware ceramic is the general term for pottery and porcelain. People always refer to porcelain and pottery as 'chinaware ceramic'. This expression reflects that pottery and porcelain are the art of fire and earth. Since pottery was invented first and porcelain was invented later, the invention of porcelain was influenced by pottery production in many aspects. For example, people have a good grasp of the properties of fire and a full understanding of the characteristics of clay. But pottery and porcelain are fundamentally different in terms of physical properties and chemical composition. As everyone knows, the knowledge in it is great. Pottery and porcelain are actually two kinds of things. The main difference between pottery and porcelain is that the raw materials are different. Pottery was a container that mankind relied on in the early days, but pottery has a shortcoming of water absorption. After discovering this shortcoming, the ancients continued to explore, gradually discovered porcelain clay and glaze, and invented porcelain. is made of porcelain clay. The main components are aluminum and silicon oxides, which are generally white or off-white powder. They have good plasticity and strong adhesion. A good porcelain clay is the 'kaolin' in the Gaoling area of u200bu200bJingdezhen. Pottery is made of clay or pottery clay after kneading into shape and firing. There is also the familiar purple sand, which also belongs to pottery, which is a special kind of pottery. Pottery is a container that mankind relied on in the early days, but pottery has a shortcoming of absorbing water one by one. After discovering this shortcoming, the ancients continued to explore, gradually discovered porcelain clay and glaze, and invented porcelain. is made of porcelain clay. The main components are oxides of aluminum and silicon, which are generally white or off-white powders. They have good plasticity and strong adhesion. A good porcelain clay is the 'kaolin' in the Gaoling area of u200bu200bJingdezhen. Pottery is made of clay or pottery clay after kneading into shape and firing. There is also the familiar purple sand, which also belongs to pottery, which is a special kind of pottery. The firing temperature is different. The firing temperature of porcelain is generally higher than the firing temperature of pottery. The shaping of porcelain must be fired in a kiln at a high temperature of about 1280℃-1400℃; but the firing temperature of pottery and tea set cannot be so high. High temperature, taking purple sand as an example, between 1050℃-1200℃, the temperature is too high, there will be problems with different hardness due to different firing temperatures and different raw materials, resulting in different hardness. tea sets are harder than pottery tea sets, and the sound of porcelain tea sets is more crisp, and it is difficult to make groove marks on the surface of the carcass with a general knife. Different transparency The body of the porcelain tea set is more transparent than the earthenware tea set, whether it is thin or thick, and the earthenware tea set is not transparent even if it is thin. Different glazes The glaze of the porcelain white porcelin dinnerware tea set can be made by firing with the carcass at a high temperature, or by hanging low-temperature glaze on the high-temperature biscuit firing tire, and firing at the second low-temperature; the pottery tea has either hanging glaze or non-hanging glaze. Two kinds of pottery glazes can be melted at a lower firing temperature. clay with different air permeability must be glazed before firing. The glaze is made of feldspar, quartz, talc, kaolin and other chemical raw materials in a certain proportion. A layer of colored or colorless glass that makes the surface of the utensil smooth and impervious to water. clay is very thin and tight, and there is no air gap after being glazed, while pottery has strong air permeability. This kind of performance is the superiority of the purple sand ware among all kinds of tea sets. Pottery with different water absorption rate: pottery more than 10%, porcelain: less than 0.2% between the two, semi-porcelain with different iron content. Ceramic: generally more than 3%, porcelain: generally less than 3%, porcelain is characterized by its smooth and translucent surface. The tire is thin and dense, with few pores, low water absorption, fast heat transfer, moderate heat preservation, and good color and fragrance can be obtained by making tea. The shape of the pottery is generally simple and rough, the atmosphere is calm, the color is darker, the tire is thick, there are many stomata, and the heat preservation is good. Although porcelain and pottery are two different substances, there is a close connection between the two. Without the experience gained from the invention of pottery and the continuous improvement of pottery making technology, porcelain cannot be invented alone. The invention of porcelain is the result of our ancestors constantly understanding the properties of raw materials, summing up firing techniques, and accumulating rich experience in the long-term pottery-making process, which resulted in changes from quantity to quality. After the advent of porcelain, pottery continued to be produced. Pottery and porcelain developed independently, and gradually changed from daily necessities to collections of art.

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