The research data show that the formation and strength of the 5·1·8 phase structure of magnesium cement increase with time, and the upper compressive strength reaches a larger value at about 28d. In a continuous production factory, due to the limitations of the site and production cycle, it is impossible to treat the product after 28 days of maintenance, but at least the next process should be maintained under the conditions of heat preservation and heat preservation for 4 to 6 days. Treatment, while trying to keep the follow-up maintenance synchronous.
It can be maintained at room temperature in summer, and the ideal temperature of the product itself in winter is 20 °C.
The reason why the glass magnesium board cannot be cured by water after demolding is because the unreacted MgCl2 in the demolded product will be dissolved by water, which will affect or destroy the formation of the 5.1.8 phase structure, so it is cured in the air. Curing in the air to complete the formation of the 5.1.8 phase structure depends on the moisture of the product itself, that is to say, to protect the moisture of the fireproof board itself from volatilization or less volatilization, the formation of the 5.1.8 phase structure can be completed. and strength growth. There are two ways to maintain moisture (water retention): one is to increase the relative humidity of the environment where the glass magnesium board is placed at 60%~70%; the other is to cover the surface of the board with a plastic film, both of which can reduce the volatilization of water in the product itself .