《化學與黏合》
 
期刊目錄
期刊介紹
 
 
 
 
  當前位置: 《化學與黏合》>>期刊目錄

2018年 第1期

PAMAM接枝改性碳纖維表面及分子動力學模擬*
孫景峰,邢麗欣,姚 遠,趙 峰,黃玉東**
(哈爾濱工業大學 化工與化學學院 新能源轉換與儲存關鍵材料技術工信部重點實驗室,黑龍江 哈爾濱 150001)
摘 要:采用化學法將聚酰胺-胺樹枝狀大分子(PAMAM)接枝在T700碳纖維(CFs)表面,對比了不同代數PAMAM分子接枝前后CFs表面的微觀形貌,并對CFs/環氧微復合材料的界面剪切強度(IFSS)進行測試及材料拉脫斷口處形貌觀察。與未處理纖維相比,經過G1.0代PAMAM接枝處理后的復合材料IFSS值提高了30.37 %。采用Materials Studio程序包,建立碳纖維、環氧樹脂及兩者間界面的結構模型并進行優化,通過分子動力學模擬并計算了界面相互作用能,結果表明,引入PAMAM分子會提高CFs與環氧樹脂間的界面結合能,與實驗結果一致。
關鍵詞:碳纖維;PAMAM;界面性能;界面結合能
  中圖分類號:TB332 文獻標識碼:A 文章編號:1001-0017(2018)06-0378-06

Surface Modification of Carbon Fiber with PAMAM and its Molecular Dynamics Simulation

SUN Jing-feng, XING Li-xin, YAO Yuan, ZHAO Feng and HUANG Yu-dong

(MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, College of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China)

Abstract: The polyamide-amine dendrimer (PAMAM) was grafted onto the surface of T700 carbon fiber (CFs) by chemical method. The surface morphology of CFs before and after grafting of different generation PAMAM molecules was compared. The interface shear strength (IFSS) of CFs/epoxy micro-composites was tested and the fracture morphology of the material was observed. Compared with the untreated fiber, the IFSS value of the composite with PAMAM-G1.0 grafted CFs increased by 30.37%. The structural model of CFs, epoxy resin and their interface were established and optimized via Materials Studio package. Then the interaction energy of the interface was simulated by molecular dynamics. The results showed that the introduction of PAMAM molecules onto CFs would improve the interfacial binding energy between CFs and epoxy resin, which was consistent with the experimental results.

Key words: CFs; PAMAM; interfacial property; interfacial binding energy

  如需全文請與編輯部聯系。聯系方式:0451-82608722
 
LPL比赛下注 <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <蜘蛛词>| <文本链> <文本链> <文本链> <文本链> <文本链> <文本链>