改性黄麻纤维和酚醛树脂复合材料的力学性能  

Study on Modification of Jute Fibers and Mechanical Properties of Phenolic Resin Matrix Composites Reinforced with Jute Fibers

作　　者：杨亚洲[1,2] 佟金[2] 马云海[2] 徐杰[3] 

机构地区：[1]吉林农业大学工程技术学院,长春130118 [2]吉林大学生物与农业工程学院地面机械仿生技术教育部重点实验室,长春130025 [3]装甲兵技术学院基础部,长春130117

出　　处：《吉林农业大学学报》2009年第6期788-792,共5页Journal of Jilin Agricultural University

基　　金：国家杰出青年科学基金项目(50025516);吉林省自然科学基金项目(20070518);吉林农业大学科学研究启动基金项目(2007035)

摘　　要：采用碱溶液(20 g/L NaOH)、热(140℃)处理方法对黄麻纤维进行改性处理,采用热压工艺将纤维与酚醛树脂制成复合材料。通过力学性能、冲击断口形貌对复合材料进行表征。结果表明:当碱处理时间不超过2 h、热处理时间不超过3 h时,黄麻纤维增强酚醛树脂基复合材料的拉伸强度和冲击强度均有不同程度提高。碱处理2 h的黄麻纤维增强酚醛树脂基复合材料的拉伸强度和冲击强度提高幅度最大,分别为13.5%和25%;冲击断口分析结果表明,热处理纤维与基体的界面结合强度高于碱处理纤维,断口呈平面化。Jute fibers were modified with alkali solution（20 g/L NaOH） and heat（140℃） treatment for different duration,respectively.Phenolic resin matrix composites reinforced with jute fiber were prepared by hot press method.The mechanical properties and impact fracture of the composites were investigated.The results show that the tensile strength and the impact strength of the composites are increased when the duration of alkali treatment and heat treatment is not more than 2 h and 3 h,respectively.Particularly,the tensile strength and the impact strength are increased by 13.5% and 25% when the fibers are treated for 2 h by alkali.The impact fracture analysis show that the adhesion strength between heat-treated fibers and matrix is higher than that between alkali-treated fibers and matrix,and the fracture of the former composite is even.

关 键 词：酚醛树脂基复合材料 黄麻纤维 改性 碱处理 热处理 力学性能 

分 类 号：TH145[一般工业技术—材料科学与工程]