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超声波是物质介质中的一种弹性机械波,在物质介质中可使介质粒子产生机械振动。超声波对物质的作用主要是空化效应,这种效应能够提高反应分子的活性,并且增加物质间的相互碰撞几率。因此,超声波处理更有利于生物酶接触纤维表面甚至深入到纤维内部,增加生物酶与纤维的接触面积。1.对纸浆滤水性能的影响超声波的空化作用产生大量空化泡,空化泡崩溃时产生的强烈微射流增加了纸浆中半纤维素
Ultrasound is a kind of elastic mechanical wave in material medium, which can make medium particles produce mechanical vibration in material medium. Ultrasonic effect on the material is mainly the cavitation effect, this effect can increase the activity of the reaction molecules, and increase the probability of collisions between substances. Therefore, the ultrasonic treatment is more conducive to biological enzyme contact with the fiber surface or even deep into the fiber, increasing the biological enzyme and fiber contact area. 1. Pulp water filtration performance Ultrasonic cavitation produces a large number of cavitation bubbles, cavitation bubble collapse produces a strong micro-jet increased hemicellulose in the pulp