Electrical and mechanical properties of polyimide–carbon nanotubes composites fabricated by in situ polymerization

Polymer ◽  
2005 ◽  
Vol 46 (18) ◽  
pp. 7418-7424 ◽  
Author(s):  
Xiaowen Jiang ◽  
Yuezhen Bin ◽  
Masaru Matsuo
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
In Situ Polymerization

The Improvement of Mechanical Properties of Polyurethane Coating by Multi-Walled Carbon Nanotubes

2011 ◽  
Vol 236-238 ◽  
pp. 2063-2066
Author(s):  
Xian Kai Jiang ◽  
Ji You Gu ◽  
Yan Hua Zhang
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
In Situ Polymerization ◽  
Impact Resistance ◽  
Polyurethane Coating ◽  
Polyurethane Coatings ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Better Than

Mechanical properties of polyurethane coating were improved by multi-walled carbon nanotubes (MWNTs) via in situ polymerization and blending polymerization. Fourier transform infrared spectroscopy (FT-IR) measurement was employed to assess the influence of acid treatment on MWNTs. Mechanical properties analysis of polyurethane coatings including tensile strength, elastic modulus, hardness, flexibility, impact resistance were employed to assess the improvement of mechanical properties of polyurethane coating by MWNTs. The results indicated that MWNTs could improve the mechanical properties of polyurethane coatings, and the improvement of polyurethane coatings by MWNTs via in situ polymerization were better than via blending polymerization, and the improvement of polyurethane coatings by acid-treated MWNTs were better than by raw MWNTs.

Improved dispersion of multi-wall carbon nanotubes in poly(butylene terephthalate) using benzimidazolium surfactants

e-Polymers ◽  
2009 ◽  
Vol 9 (1) ◽  
Author(s):  
Martino Colonna ◽  
Corrado Berti ◽  
Enrico Binassi ◽  
Maurizio Fiorini ◽  
Francesco Acquasanta ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Thermal Stability ◽  
In Situ Polymerization ◽  
Nucleation Process ◽  
Imidazolium Salt ◽  
Butylene Terephthalate ◽  
Multi Wall Carbon Nanotubes ◽  
Benzimidazolium Salt

AbstractMulti-wall carbon nanotubes/poly(butylene terephthalate) nanocomposites have been prepared by in-situ polymerization. Benzimidazolium tetrafluoroborate salts improve the dispersion of carbon nanotubes in the polymer matrix due to the formation of “π-cation” interactions of the imidazolium salt with the surface of the carbon nanotubes. An improved dispersion of the nanotubes in butanediol was also observed using the benzimidazolium salt. The presence of the compatibilization agent gives rise to improved thermo-mechanical properties and electrical conductivity for the nanocomposite. The presence of the nanotubes also consistently increases the thermal stability and enhances the nucleation process on PBT crystallization.

Preparation and Properties of Polyimide/MWNTs-COOH Antistatic Composites

2014 ◽  
Vol 893 ◽  
pp. 241-244
Author(s):  
Yong Hui Lv ◽  
Bao Xiang Deng
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Thermal Stability ◽  
Acid Treatment ◽  
In Situ Polymerization ◽  
Composite Films ◽  
Good Thermal Stability ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

The acidified multi-walled carbon nanotubes (MWNTs-COOH) was obtained by nitric acid treatment on multi-walled carbon nanotubes (MWNTs).The PI/MWNTs-COOH composite films were synthesized by in situ polymerization. The thermal stability, resistance and mechanical properties of PI/MWNTs-COOH composite were evaluated. The results showed that: the composites maintained a good thermal stability with the addition of the MWNTs-COOH; the resistance of the composite film dropped at first, and rose up later. While the tensile strength increased at first and then decreased. In conclusion, the PI/MWNTs-COOH composite films exhibited better thermal, antistatic and mechanical properties compared with neat PI.

Comparative study of the thermal and mechanical properties of nanocomposites prepared by in situ polymerization of ε-caprolactone and functionalized carbon nanotubes

2012 ◽  
Vol 33 (4) ◽  
pp. 562-572 ◽  
Author(s):  
Víctor H. Antolín-Cerón ◽  
Sergio Gómez-Salazar ◽  
Martin Rabelero ◽  
Víctor Soto ◽  
Gabriel Luna-Bárcenas ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Comparative Study ◽  
In Situ Polymerization ◽  
Thermal And Mechanical Properties ◽  
Functionalized Carbon Nanotubes

Polyethylene Functionalized Multi-Walled Carbon Nanotubes via In Situ Polymerization

2012 ◽  
Vol 573-574 ◽  
pp. 1163-1166
Author(s):  
Shi Yun Li ◽  
De Sheng Hu
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Storage Modulus ◽  
Raman Spectra ◽  
In Situ Polymerization ◽  
Thermal And Mechanical Properties ◽  
The Matrix ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

The MWNTs/PE nanocomposites are prepared by in situ polymerization with mulltiwalled carbon nanotubes (MWNTs) supported Cp2ZrCl2 catalyst and MAO as cocatalyst. The SEM and AFM results show that MWNTs are exfoliated and homogenously dispersed in PE matrix by the in situ polymerization. The up-shifting of the G band in Raman spectra show the strong compressive forces associated with PE chains on the MWNTs. The storage modulus of the MWNTs/PE nanocomposite can be increased by 160% even at low amount of MWNTs (0.2 wt %) due to MWNTs well-dispersed and exfoliated in the matrix. The TGA and DMA tests point to significant improvements on thermal and mechanical properties of the PE/MWNTs nanocomposites compared to pure PE.

Synthesis and Characterizations of Poly(Butylene Succinate) Copolyester

2014 ◽  
Vol 1015 ◽  
pp. 381-384
Author(s):  
Li Liu ◽  
Li Hai Cai ◽  
Dan Liu ◽  
Jun Xu ◽  
Bao Hua Guo
Keyword(s):  
Mechanical Properties ◽  
Polymer Matrix ◽  
Crystallization Temperature ◽  
In Situ Polymerization ◽  
Nucleating Agent ◽  
Single Fiber ◽  
Butylene Succinate ◽  
Crystallization Behaviors ◽  
Polymerization Method

The poly (butylene succinate) (PBS) and 3 wt% attapulgite (ATP) reinforced PBS/ATP nanocomposites with 1,6-hexanediol were fabricated using an in situ polymerization method. The crystallization behaviors indicated that ATP had effectively acted as nucleating agent, resulting in the enhancement on the crystallization temperature. The SEM results showed a superior interfacial linkage between ATP and PBS. Also, ATP could disperse as a single fiber and embed in the polymer matrix, which resulted in the improved mechanical properties.

Mechanical Properties of Thermoplastic Composites via In Situ Polymerization from Cyclic Oligomers

2013 ◽  
Vol 750-752 ◽  
pp. 7-10
Author(s):  
Kou An Hao ◽  
Zhen Qing Wang ◽  
Li Min Zhou
Keyword(s):  
Mechanical Properties ◽  
In Situ Polymerization ◽  
High Viscosity ◽  
Thermoplastic Composites ◽  
Thermoplastic Matrix ◽  
Polymerization Catalyst ◽  
Short Beam ◽  
Beam Shear ◽  
Cyclic Oligomers

Fiber impregnation has been the main obstacle for thermoplastic matrix with high viscosity. This problem could be surmounted by adapting low viscous polymeric precursors Woven basalt fabric reinforced poly (butylenes terephthalate) composites were produced via in-situ polymerization at T=210°C. Before polymerization, catalyst was introduced to the reinforcement surface with different concentration. DSC is used to determine the polymerization and crystallization. SEM is used to detect whether the catalyst existed on surface. Both flexural and short-beam shear test are employed to study the corresponding mechanical properties.

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