Double-layer glass reactor is a commonly used reaction instrument in modern laboratories. It can carry out reaction experiments such as concentration, distillation, reflux, separation and purification under constant speed and temperature. It is an ideal instrument for biopharmaceutical and college experimental production.
The entire glass of the reactor is made of high borosilicate glass. The bottle is transparent, and the changes of liquid materials during the reaction process can be clearly seen. It can be used in the temperature range of -120℃~+400℃, and has a wide range of applications.
We all know that the strength of glass is proportional to its thickness. The thicker the glass, the higher its compression and impact resistance. However, in the process of our experiments, the primary requirement is often not the strength of the glass reactor glass, but the performance of high temperature resistance, low temperature resistance, corrosion resistance, acid and alkali resistance, and thermal shock resistance.
In the production process of double-layer glass reactor, the glass should be fired to a certain high temperature for shaping, and then the shaped glass parts should be placed in an oven for annealing, so that the inner glass and the outer glass can maintain the same cooling rate and shrinkage ratio, so that the thermal expansion coefficients of the inner and outer glass can be consistent.
However, the thickness of the glass reactor is not the thicker the better. The higher the thickness, the more difficult it is to ensure the consistency of the cooling rate and shrinkage ratio of the inner and outer glass of the double-layer glass reactor during the production process, resulting in a fast cooling rate of the outer glass. After the outer glass is cooled to room temperature and shrinks, the inner glass is still shrinking. At this time, the outer glass inhibits the shrinkage of the inner glass, resulting in the inner and outer glass forming a pulling force inside. Once the temperature changes at this time, it may cause cracks in the glass reactor, and even breakage in severe cases.
In addition, double-layer glass reactors are usually used for heating and cooling reactions in laboratories. Too thick glass will cause poor heat transfer performance, affecting the working efficiency and actual effect of the entire glass reactor. Therefore, the thickness of the glass reactor should be a balance between temperature resistance, heat transfer performance and strength.
