A desiccant
is a product or material that can be absorbs moisture from the air,
thus reducing the humidity in a controlled environment and thereby
protecting goods from moisture damage.
Desiccant absorption characteristics
Physical absorption
Such desiccants absorb moisture physically by trapping the
moisture inside its capillaries or its surface, yet the water molecules
chemical properties remain unchanged, thus the moisture absorption
process is reversible.
Typical physical absorption desiccants: silica gel, molecular sieve, etc.
Typical physical absorption desiccants: silica gel, molecular sieve, etc.
Chemical absorption
Such desiccants absorb moisture and convert the resultant
mixture to another substance by changing its chemical properties a
process that is irreversible.
Typical chemical absorption desiccant: calcium chloride, magnesium sulfate, etc.
Typical chemical absorption desiccant: calcium chloride, magnesium sulfate, etc.
The quantity of comparison of deciccant used
The most common dessicants is use are silica gel and clay
which only absorb from 10% to 27% of their dry weight, whereas Super Dry
desiccant absorbs up to 300%.
The absorption rate of Super Dry desiccant is 8 times up to 15 times than the common desiccants.
For example, inside a hermetically seeled box of 1 cubic
meter at 30°C and 80% RH, there are 24 grams of moisture. To absorb all
the moisture inside the box, about 100 grams of high quality common
desiccant are required but only about 10 grams of Super Dry desiccant
are required. Furthermore this makes Super Dry extreamly cost efficient verses other type of desiccant.
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