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Wool is "the fiber from the fleece of the sheep or lamb or hair of the Angora or Cashmere goat (and may include the so-called specialty fibers from the hair of the camel, alpaca, llama, and vicuna) which has never been reclaimed from any woven or felted wool product". [16] "Virgin wool" and "new wool" are also used to refer to such never used ...
When added to foods or other materials for the express purpose of maintaining moisture content, hygroscopic materials are known as humectants. Materials and compounds exhibit different hygroscopic properties, and this difference can lead to detrimental effects, such as stress concentration in composite materials .
Wool is a highly effective insulating material which performs better than its rated R value because it can absorb and release moisture. [3] Mongolian nomads used [when?] felted and woven sheep wool pads as an insulating layer on the walls and floors of their dwellings, called ger or yurts. The use of wool for insulation is starting to rise in ...
Sugar does this because it is hygroscopic, which means it readily attracts and holds onto water. In flour, the gluten-forming proteins and starch granules act like a sponge to retain water.
Breathability: In general, wool's comfort comes from its thermo-balance characteristics. The breathability factor of a material depends on its ability to absorb moisture relative to its weight and then release it into the air. The higher the absorption value the better the textile is at adapting to humidity level changes.
Moisture sorption isotherm. The relationship between water content and equilibrium relative humidity of a material can be displayed graphically by a curve, the so-called moisture sorption isotherm. For each humidity value, a sorption isotherm indicates the corresponding water content value at a given temperature. If the composition or quality ...
Don Magruder writes: "The advent of stone wool insulation is providing a unique value proposition for contractors and homeowners."
“Sandy soils will require the most water, while clay soils require less frequent, but deeper watering because they retain more moisture. The soil absorption rate (how much water your soil will ...