超声处理对纳米改性竹纤维力学性能的影响  

Influence of ultrasonic treatment on mechanical properties of bamboo fibers modified by nanoparticles

作　　者：王翠翠[1] 程海涛[1,2] 宋伟[1] 李文燕[1] 张双保[1] 

机构地区：[1]北京林业大学木材科学与工程北京市重点实验室,北京100083 [2]国际竹藤中心,北京100102

出　　处：《纺织学报》2016年第3期16-20,共5页Journal of Textile Research

基　　金：浙江省共建项目(CZXC201410);国际竹藤中心基本科研业务专项资金资助项目(1632014002)

摘　　要：为提高单根竹纤维的力学性能,对纳米浸渍改性竹纤维进行了超声处理,并研究了超声时间和超声频率对单根改性竹纤维拉伸性能的影响。采用场发射环境扫描电镜(FEESEM)、高精度力学性能测试仪(HPMPT)和激光共聚焦扫描显微镜(CLSM)对超声处理的单根改性竹纤维表面形貌、Ca CO3附着量以及力学性能进行了表征。结果表明,超声处理改性竹纤维的拉伸强度和弹性模量较未处理竹纤维分别提高了15.99%和7.81%,其最优工艺条件为超声频率45 k Hz,超声时间10 min。To improve the mechanical properits of individual bamboo fiber,the ultrasonic treatment was performed to the bamboo fibers modified by nanoparticles. The influence of ultrasonic frequency and ultrasonic treatment time on mechanical properties of individual modified bamboo fiber was also studied.Field emission environmental scanning electron microscope（ FEGSEM）,hight precision machanical property tester（ HPMPT） and confocal laser scanning microscope（ CLSM） were used to characterize the surface morphology,the load of Ca CO3 and mechanical properties of individual modified bamboo fiber subjected to ultrasonic treatment. The results showed that the tensile strength and elasticity modulus（ MOE） of single modified bamboo fiber increased by 15. 99% and 7. 81%,respectively,compared with the untreated bamboo fiber. The optimal process conditions for individual bamboo fiber modified by ultrasonic treatment were determined to be an ultrasonic frequency of 45 k Hz and an ultrasonic time of 10 min.

关 键 词：纳米碳酸钙 浸渍改性 竹纤维 超声处理 超声频率 超声时间 力学性能 

分 类 号：TS102.1[轻工技术与工程—纺织工程] S785[轻工技术与工程—纺织科学与工程]