Quality standard for high borosilicate glass products
High borosilicate glass is a special type of glass material with special chemical and physical properties. High borosilicate glass has the characteristics of high transparency, high temperature resistance, high chemical stability, high mechanical strength, and low expansion coefficient, and is widely used in industries, scientific research, medical and other fields. In order to ensure the quality and urgency of high borosilicate glass products, a series of standards have been formulated. This article mainly introduces the quality standards of high boron silicon products, including material properties, physical properties, chemical properties, and appearance properties.
Material performance standards
1. Boron content: High borosilicate glass should have a high boron content, generally requiring a boron content of over 8%.
2. Transparency: The transparency of high borosilicate glass should comply with relevant national standards, usually requiring a transparency of over 92%.
3. Thermal expansion coefficient: The thermal expansion coefficient of high borosilicate glass should comply with relevant national standards, usually requiring a thermal expansion coefficient below 0.5x10-6/℃.
4. Flame retardancy: High borosilicate glass should have good commercial stability and be resistant to chemical corrosion and erosion.
5. Chemical stability: High borosilicate glass should have good chemical stability and be less susceptible to chemical corrosion and erosion.
6. High temperature stability: High borosilicate glass should have good high temperature stability and be able to work for a long time in a high-temperature environment without deformation and damage.
7. Flatness: The surface of high borosilicate glass should be flat and smooth, without defects such as bumps, scratches, and bubbles.
8. Cleanliness: High borosilicate glass should be clean and free from pollutants such as dust, oil, and foreign objects.