We all know that the strength of glass is directly proportional to its thickness. The higher the thickness, the higher the compressive and impact resistance of glass. However, in the process of our experiment, the primary requirement is not the strength of glass, but the performance of high temperature resistance, low temperature resistance, corrosion resistance, acid and alkali resistance, thermal shock resistance and so on.
In the production process of double-layer jacketed glass reactor, the glass shall be shaped after being fired to a certain high temperature, and then the shaped glass parts shall be placed in the oven to start annealing. In this way, the inner glass and the outer glass can maintain the same cooling rate and cold shrinkage ratio, so as to make the thermal expansion coefficient of the inner glass and the outer glass consistent.
However, the glass is not thick better. If the glass is too thick, it will be difficult to ensure the consistency of the cooling rate and cold shrinkage ratio of the inner and outer glass of the jacketed glass reactor in the production process, resulting in the fast cooling rate of the outer glass. After the outer glass is reduced to room temperature and cold shrinkage is completed, the inner glass is still cold shrinkage. At this time, the outer glass inhibits the cold shrinkage of the inner glass, Thus, the inner and outer glass forms a pulling force inside. Once the temperature changes at this time, it may cause cracks in the glass of the double-layer glass reactor, and even rupture in serious cases.
Moreover, the jacketed glass reactor is usually used for heating and cooling reaction in the laboratory. Too thick glass will cause poor heat transfer performance and affect the working efficiency and actual effect of the double-layer glass reactor. Therefore, the thickness of the jacketed glass reactor should choose a balance point between temperature resistance, heat transfer performance and strength.
