连续纤维增强含二氮杂萘酮联苯结构聚芳醚砜酮树脂基复合材料的界面  

INTERFACIAL STUDIES OF CONTINUOUS FIBERS REINFORCED POLY(AROMATIC ETHERS) CONTAINING PHTHALAZINONE MOIETIES

作　　者：陈平[1] 陆春[2] 王静[1] 张承双[1] 于祺[2] 

机构地区：[1]大连理工大学化工学院先进聚合物基复合材料制备技术辽宁省重点实验室,大连116012 [2]沈阳航空航天大学材料学院先进聚合物基复合材料制备技术辽宁省重点实验室,沈阳110136

出　　处：《高分子学报》2011年第1期38-47,共10页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号50743012);国家高技术研究发展计划(863计划;项目号2003AA305130);国防"十一五"基础科研项目(项目号A3520060215);辽宁省"十一五"重点科技攻关项目(项目号2007403009)资助

摘　　要：利用射频感性耦合冷等离子体(ICP)处理技术改性连续纤维表面,分别采用X射线光电子能谱(XPS)、原子力显微镜(AFM)及动态接触角分析(DCA)系统研究了等离子体处理时间、放电气压、放电功率等工艺参数对连续碳纤维、芳纶纤维和对亚苯基苯并二噁唑(PBO)纤维的表面化学成分、表面形貌、表面粗糙度及表面自由能的影响.研究结果表明,等离子体处理能够在连续纤维表面引入O—C O基等极性基团,使纤维表面极性基团的含量增加,等离子体对纤维表面具有明显的刻蚀作用,经等离子体处理后纤维的表面粗糙度增加,表面自由能增大,纤维的浸润性能得到明显改善.利用等离子体对纤维进行表面处理时应选择合适的等离子体处理工艺参数.在此基础上,采用层间剪切强度(ILSS)、吸水率和扫描电子显微镜(SEM)系统地分析了连续纤维增强可溶性聚芳醚(PPESK)树脂基复合材料的界面粘结与破坏机理.结果表明,冷等离子体处理能够使连续纤维增强PPESK树脂基复合材料的ILSS增大,吸水率降低,复合材料的界面粘结性能得到明显改善.在应力的作用下,复合材料的破坏模式由未处理的界面脱黏破坏转变为冷等离子体处理后树脂基体的破坏.The surface modification of continuous fiber was conducted by the inductive coupling radio frequency cold plasma（ICP） technique.The influence of the plasma parameters,such as treatment time,discharge pressure,power,etc.on the surface chemical composition,surface morphology,surface roughness and surface free energy of continuous fiber was systematically studied by X-ray photoelectron spectroscopy（XPS）,atomic force microscopy（AFM） and dynamic contact angle analysis（DCAA）,respectively.Results showed that the plasma treatment introduced some polar groups such as O—C O onto the continuous fiber surface,increasing the percentage of surface polar groups;the plasma etched the fiber surface obviously,enhancing the surface roughness and surface free energy and improving the wettability of the fiber distinctly.Plasma treatment conditions should be appropriate during surface modification of fibers by clod plasma.After CF was treated for 5 min,CF surface polar group was increased to a relatively higher level.However,the effect of plasma etching on CF surface is relatively slower.After CF was treated for 5 min,CF surface roughness was changed a little.However,after CF was treated for more than 15 min CF surface roughness was increased significantly.Based on the study above,the interfacial adhesion and fracture mechanism of continuous fiber reinforced soluble polyaromatic ether resin composites was also systematically analysed by interlaminar shear strength（ILSS）,water absorption and scanning electron microscopy（SEM） measurements.It was found that CF reinforced poly（phthalazinone ether sulfone ketone）（PPESK） composite interfacial adhesion mechanism analysis indicats that both chemical bonding and mechanical interlocking interaction has a positive effect on composite interfacial adhesion,however,mechanical interaction has a dominant effect on composite interfacial adhesion than chemical bonding interaction.Armos aramid fiber composite interlaminar shear strength increased from 59.5 MPa for untre

关 键 词：二氮杂萘酮聚芳醚树脂 碳纤维 芳纶纤维 聚对亚苯基苯并二噁唑(PBO)纤维 先进复合材料 表面与界面 

分 类 号：TB332[一般工业技术—材料科学与工程]