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nature : (1) paper products and fiber impregnation time in the water, wetting the state measured the mechanical strength, the international standards to N / m said. For some cardboard or paper handkerchief as paper, coated base paper, paper notes and drawings requirements sea with a high wet strength. Fiber in wet (soaking in water completely balanced state) Determination of the strength of the fiber is different from dry conditions in the intensity -- intensity dry state (stem strength, dry strength). General hydrophilic fibers due to water-absorbent after the plasticization lead to secondary structural damage, making them wet strength Pi intensity markedly lower. If viscose fiber, its roots wet strength intensity by 30% to 50%. But there are also wet strength Pi intensity examples, such as the Department of natural cellulose fibers (cotton, linen), which is due to the high tectonic (micro-fiber, etc.) with particularity a more important role due. Most are hydrophobic synthetic fibers, so they dry, wet or nearly equal intensity. Dry Strength / wet strength, as wet and dry strength ratio, the value of all properties in fiber occupies an important position. (2) in the allotted time, the temperature and pressure conditions, the adhesive bonding of the first bonding out of leachate from immediately after the determination of the intensity. So concerned about wet strength because of the polymer material, such as water molecules due to the integration, it will be obvious mechanical properties, electrical properties deteriorate. Some materials can be multiplied lower.
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