摘要
利用微波接枝CPVC复配偶联剂处理秸秆纤维表面,采用光学法液滴形态分析系统测定处理前后秸秆微粉的动态接触角及表面能变化,并制备相应的复合材料进行力学性能测试。研究结果表明:微波接枝CPVC复配偶联剂界面改性方法对秸秆纤维有较好的改性效果,改性后秸秆纤维的平衡接触角θe由74.65°上升至98.96°,从明显的亲水性转变为疏水性;而表面能则有不同程度减小,改性后秸秆纤维表面能(23.68 m J/m2)低于HDPE基体(28.61 m J/m2);经微波接枝CPVC改性后秸秆纤维复合材料保持了良好的力学性能。较透彻地了解秸秆纤维复合材料的复合界面特性及其复合机理,设计和制造不同性能、满足不同应用领域要求的纤维复合材料产品,是秸秆纤维复合材料研究工作者至今仍在继续探索的重要研究领域。
CPVC double-component blending coupling agents were used to treat the surface of straw fibers by microwave-grafting. The change of dynamic contact angle and surface energy of untreated and treated straw micro powder were measured by optical method ,and relative composite were prepared to carry mechanics properties tests. The experimental results showed that the surface modification using microwave-grafted CPVC double-component blending coupling agents had relative effect on straw fiber. The balance contact angle （θc） of treated straw increased from 74.65° to 98.96°, and the straw was converted from obvious hydrophilic to hydrophobic. The surface energy had some degree of decrease after modification, from 28.61 mJ/m^2 to 23.68 mJ/m^2. The straw composite maintained well mechanics properties after modified by microwave-grafted CPVC. The composite interface characteristics and mechanism of straw composite were studied. In order to meet demands of different application fields ,designing and producing fiber composites with different functions were necessary, and it was an important research field which straw fiber composite researchers continued to explore until now.
出处
《塑料》
CAS
CSCD
北大核心
2011年第1期36-39,共4页
Plastics
基金
国家自然科学基金资助项目(20976068/B060805)
关键词
微波接枝
CPVC
表面能
界面
力学性能
microwave-grafting
CPVC
surface energy
interface
mechanics properties
