Effect of hyperbranched polyethyleneimine grafting functionalization of carbon nanotubes on mechanical, thermal stability and electrical properties of carbon nanotubes/bismaleimide composites
被引:10
|
作者:
Qiu, Jun
论文数: 0引用数: 0
h-index: 0
机构:
Tongji Univ, Sch Mat Sci & Engn, Educ Minist, Key Lab Adv Civil Engn Mat, Shanghai 201804, Peoples R ChinaTongji Univ, Sch Mat Sci & Engn, Educ Minist, Key Lab Adv Civil Engn Mat, Shanghai 201804, Peoples R China
Qiu, Jun
[1
]
Wu, Qianqian
论文数: 0引用数: 0
h-index: 0
机构:
Tongji Univ, Sch Mat Sci & Engn, Educ Minist, Key Lab Adv Civil Engn Mat, Shanghai 201804, Peoples R ChinaTongji Univ, Sch Mat Sci & Engn, Educ Minist, Key Lab Adv Civil Engn Mat, Shanghai 201804, Peoples R China
Wu, Qianqian
[1
]
Jin, Lei
论文数: 0引用数: 0
h-index: 0
机构:
Tongji Univ, Sch Mat Sci & Engn, Educ Minist, Key Lab Adv Civil Engn Mat, Shanghai 201804, Peoples R ChinaTongji Univ, Sch Mat Sci & Engn, Educ Minist, Key Lab Adv Civil Engn Mat, Shanghai 201804, Peoples R China
Jin, Lei
[1
]
机构:
[1] Tongji Univ, Sch Mat Sci & Engn, Educ Minist, Key Lab Adv Civil Engn Mat, Shanghai 201804, Peoples R China
Hyperbranched polyethyleneimine (PEI) grafted CNTs (CNTs-PEI) were used to reinforce bismaleimide (BMI) composites. The effect of CNTs-PEI on mechanical properties, thermal resistance and electrical conductivity of composites was investigated. Evaluation of mechanical properties showed that the mechanical properties of CNTs-PEI/BMI composites were higher than that of CNTs/BMI composites. A maximum increase of impact strength up to 44% compared with that of pure BMI was observed in CNTs-PEI/BMI composites. The flexural strength of CNTs-PEI/BMI composites reached the maximum of 205 MPa which was much higher than that of CNTs/BMI composites. Similar tendency on the flexural modulus of the composites was observed. The maximum T-g of CNTs/BMI composites and CNTs-PEI/BMI composites were 224 degrees C and 240 degrees C respectively. Electrical conductivity of CNTs-PEI/BMI composites increased by 14 magnitude compared with pure BMI, while only 8 magnitude increased in CNTs/BMI composites.