精选优质文档-倾情为你奉上 For many years, glass and carbon fiber have been the accepted traditional reinforcements to polymers. But now many people have recognized that glass fiber is difficult to be disposed(处理) and carbon fiber is too expensive. Natural fibers are a realistic alternative reinforcement because of the advantages of their low cost, relatively high toughness, good thermal properties and excellent environmental performance, and their reinforced polymer composites have attracted