There are certain differences between high – white glass material and crystal – white glass material in terms of raw material composition, production process, appearance characteristics, performance features, and application fields. The following is a detailed introduction:
Raw Material Composition
- High – white material: It mainly uses high – quality quartz sand, soda ash, limestone, etc. as the main raw materials. At the same time, it has high requirements for the purity of the raw materials. The content of impurities such as iron is usually controlled at a low level, generally requiring the iron content to be below 0.06% to ensure the high transparency and whiteness of the glass.
- Crystal – white material: The raw materials are similar to those of high – white material, but there are stricter controls on the content of some trace elements. For example, the content of titanium oxide and other elements will be more strictly controlled to reduce the impact on the optical properties of the glass. Some crystal – white materials will also add special fining agents or fluxes, such as cerium oxide, to further improve the quality of the glass.
Production Process
- High – white material: During the melting process, strict control of temperature and atmosphere is required. The temperature needs to be precisely controlled at around 1500 – 1600 °C to ensure that the raw materials are fully melted and evenly mixed. At the same time, advanced fining and homogenization processes are adopted to remove bubbles and impurities in the glass melt, making the glass melt reach a high level of purity.
- Crystal – white material: The production process is more refined and complex. In addition to similar temperature and atmosphere control as high – white material, the control of parameters such as cooling rate during the forming process of crystal – white material is more precise to obtain better crystal structure and optical properties. For example, a slight difference in the cooling rate during the blowing or pressing process may affect the internal stress distribution of the glass, thus affecting its transparency and gloss.
Appearance Characteristics
- High – white material: It has high whiteness and transparency. When observed with the naked eye, the glass surface shows a bright white color without obvious color differences and impurities. However, compared with crystal – white material, it may be slightly inferior in terms of gloss and fineness.
- Crystal – white material: It has extremely high transparency and gloss on the appearance, presenting a crystal – clear texture, as pure as crystal. Its surface is smoother and more delicate, with almost no visible flaws or small particles. The color is uniform, and the whiteness is higher, giving a more high – end and delicate visual effect.
Performance Features
- High – white material: It has good physical and chemical properties, such as high hardness and mechanical strength, and can withstand a certain degree of impact and pressure. It also has good chemical stability and can resist the erosion of general acids, alkalis, and other chemical substances. However, in some aspects of optical properties, such as the uniformity of refractive index, it may have a certain gap compared with crystal – white material.
- Crystal – white material: In addition to the basic properties of high – white material, it performs more outstandingly in optical properties. Its refractive index has higher uniformity, which can make light pass through and refract more evenly, reducing light scattering and distortion. At the same time, the thermal stability of crystal – white material is better, and it can maintain stable performance within a large temperature range, and is not prone to problems such as cracking or deformation due to temperature changes.
Application Fields
- High – white material: It is widely used in fields such as architectural glass and ordinary daily – use glass products. For example, architectural door and window glass, ordinary glass cups, glass bottles, etc. It can meet general light – transmission, decoration, and use requirements, and is popular in the market due to its high cost – performance ratio.
- Crystal – white material: It is mainly applied to fields with extremely high requirements for appearance quality and optical performance. Such as high – end crystal glass tableware, optical instrument lenses, high – end cosmetic packaging bottles, art glass products, etc. In these fields, the high transparency, gloss, and excellent optical properties of crystal – white material can enhance the grade and added value of products, meeting consumers’ demands for high – quality products.
