How to store calcium oxide does not deteriorate aging?

Calcium oxide, also known as quicklime, is an alkaline inorganic compound, which is widely used in manufacturing, breeding, agriculture, construction and other industries. However, improper storage of calcium oxide is prone to deterioration and aging, so how can calcium oxide be stored without losing its activity?

Causes of deterioration and aging of calcium oxide in 1.

Temperature effect: high temperature is very easy to thermal cracking, thermal crosslinking and activation of calcium oxide, which accelerates the speed of oxygen diffusion and activation of oxidation reaction, thus improving the speed of oxidation reaction of calcium oxide, resulting in extremely rapid oxidation aging, which is more thermal oxygen aging.

Humidity impact: calcium oxide storage is not, easy to absorb water vapor in the air, by the erosion of water vapor will cause moisture deterioration aging, in the absorption of carbon dioxide in the air, resulting in the loss of calcium oxide activity.

Light wave effect: when the shorter the light wave, the greater the energy, high-energy ultraviolet rays can easily destroy the role of calcium oxide, resulting in rubber molecular chain fracture, crosslinking and due to the absorption of light energy to produce free radicals, accelerate the reaction process of oxidation chain. After absorbing light energy, rubber surface may enter and grow. Samples with high gum content will produce reticulated cracks, commonly known as "light outer layer cracking".

Ozone effect: ozone chemical active oxygen destructive larger, in the occurrence of molecular chain fracture, the role of calcium oxide with rubber deformation or not different, as used for deformation of the rubber reinforcing agent, and the stress direction of the crack, the so-called "ozone cracking".

Stress effect: under the repeated action of mechanical stress, calcium oxide will cause the molecular chain of calcium oxide to break to produce free benzene, and then trigger the oxidation chain reaction, forming a mechanochemical process, mechanical fracture molecular chain and mechanical activation oxidation process, resulting in deterioration or aging.

Air effect: oxidation is one of the important reasons for the aging of calcium oxide, and oxygen in calcium oxide will produce free radical chain reaction with rubber molecules, resulting in molecular chain breakage or excessive crosslinking, triggering changes in performance, so it must be sealed.

Chemical moisture effect: calcium oxide is an alkaline substance, and it will be stored together with acid and other chemical substances. Attention should be paid to keep away from water sources and chemical substances during storage to avoid deterioration and aging of calcium oxide.

2. the correct storage of calcium oxide

1. Calcium oxide should be stored in a cool and ventilated environment with indoor temperature greater than 0 ℃ and humidity less than 85%.

2. The container for storing calcium oxide should be stored in a place to avoid direct sunlight and ultraviolet rays, and keep the container sealed.

3. It is forbidden to pour calcium oxide into the pool.

4. It is forbidden to use bottle stoppers for storing calcium oxide. In glass bottles with bottle stoppers, calcium oxide reacts with silica to produce sodium silicate, which is a kind of glue, which will cause bottle stoppers and glass bottles to stick together. Rubber or wooden bottle stoppers can be used.