It has been known that UV-curing coatings is difficult to adhere onto the plastic substrates that show very low surface free energy.
紫外光固化涂料在表面自由能低的塑料底材上附着极为困难。
It has been known that fluorocarbons have an extremely low surface free energy and they are widely applied for water and oil repellent finishing.
众所周知，氟碳化合物具有极低的表面张力，因此广泛用于拒水拒油整理。
One is to create a rough structure on a hydrophobic surface, and the other is to modify a rough surface by materials with low surface free energy.
一般情况下，超疏水表面可以通过两种方法来制备：在疏水性表面构建粗糙结构或者在粗糙表面修饰低表面能物质。
If the silane has no polar group, the surface free energy is low.
反之若硅烷中不含有极性基，则处理后玻纤的表面能较低。
The result showed that the surface free energy of wheat straw was low and there was difference in the longitudinal and cross directions of the wheat straw.
结果表明：麦秸表面的自由能较低；麦秸的纵向和横向均存在润湿性能的差异。
The result showed that the surface free energy of wheat straw was low and there was difference in the longitudinal and cross directions of the wheat straw.
结果表明：麦秸表面的自由能较低；麦秸的纵向和横向均存在润湿性能的差异。
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