Study On The Environmental Behavior Of Desert Shrub Fiber Based Material

The paper mainly studied on the environmental properties of a new kind of soiless culture substrate. The material is made of Salix psammophyla and Caragana Korshinskii Kom. By testing the material's hydroscopic properties, hygroscopic property, moisture vaporizing and moisture retention, we analyzed the effects of configuration of the substrates on the environmental behavior. In addition, we contrast the weaving technology with the composite technology. The difference of the products based on these production technologies was analyzed too. The result is as fellows: 1 The Interwoven Substrate: with enhancing fibre separative degree, its water properties increase, but the fiber's length is no less than 2 mm, or else the fiber become difficult to interweave, which results in wood fiber decrease and effects the environmental behavior of products. In addition, with the increase of the area density and bulking intensity, the material's properties are improved. The area density is not beyond 700 g/㎡,and bulking intensity is not exceed 50kg/m3. 2 The Composite Substrate: its environmental behavior is enhanced with the depth of the material thickness under the definite density. 3 The composite substrate is superior to the substrate interwoven in the environmental behavior, especially in the material's hydroscopic properties, hygroscopic property and moisture vaporizing . 4 On the whole, product's thickness, density, fiber unit configuration and production technology have no effect on its moisture retention properties. As a kind of superstratum, substrate can prevent moisture in sandy soil to lose. 5 The weaving technology is easier than the composite technology. The interwoven substrate is softer than composite substrate, but the material's environmental behavior is inferior to the composite substrate's.