High borosilicate glass tube is a special type of glass tube with excellent performance, known for its outstanding heat resistance, chemical stability, and physical strength.
一 、 Core definition and main components
High borosilicate glass is a type of borosilicate glass, characterized by a very high content of boron oxide (B ₂ O3), usually greater than 12%, and even up to 13% -15%, while the content of silicon dioxide (SiO ₂) is also above 80%. This unique composition is the chemical basis for its excellent performance.
Compared with ordinary soda lime glass (such as window glass and ordinary glass cups), it uses boron oxide to partially replace alkaline components such as sodium oxide, greatly improving its performance.
二 、 Highlight features and advantages
1. Excellent heat resistance (high thermal stability)
High temperature resistance: It can usually withstand high temperatures of 400-500 ℃ for a long time, and can withstand temperature fluctuations of up to 150-200 ℃ in a short period of time
2. Excellent chemical stability
Has strong resistance to water, acid, alkali, organic solvents, etc., and is not easily corroded.
This makes it very suitable for use in chemical laboratories, medical devices, and high-end food industries, without reacting with the contents and contaminating substances.
3. High mechanical strength
At the same thickness, the mechanical strength (compressive and impact resistance) of high borosilicate glass is usually higher than that of ordinary soda lime glass.
4. Good optical performance
High transparency, as clear and transparent as crystal.
The low transmittance of ultraviolet radiation is very advantageous for storing drugs or chemicals that need to avoid the influence of light.
5. Health and safety
The material is pure and free from the risk of heavy metal (such as lead and cadmium) precipitation, making it an ideal choice for food contact materials.
The surface is smooth and dense, not prone to impurities, and easy to clean and disinfect.
三、 Main application areas
Based on the above characteristics, high borosilicate glass tubes are widely used in the following fields:
1，Laboratory and scientific research: various precision chemical and biological experimental vessels such as beakers, flasks, condenser tubes, reaction vessels, etc.
2. Optoelectronics and New Energy:
Solar vacuum collector tube: This is one of its largest applications, serving as the cover and inner tube of a vacuum tube, capable of withstanding pressure and efficiently absorbing solar energy.
LED light casing, high-power probe lampshade.
3. Pharmaceuticals and Chemicals:
Ampoules, penicillin bottles, and syringe barrels in the pharmaceutical industry.
Observation windows, pipelines, and corrosion-resistant containers in the chemical industry.
4. Industry and Environmental Protection:
Liquid level gauge and sight glass under high temperature conditions.
Sampling tube for smoke analysis system.
