Single Walled Carbon Nanotube 2000 ~ 2005
POSITION: Ph.D. Graduate Student
PERIODE: 2000 ~ 2005
INSTITUTE: RICE University, Houston, Texas
SUMMARY: Integrate Carbon Nanotube Technology into Advanced Composite Materials
MISSION: High temperature layer-by-layer spray deposition of the Single-Walled Carbon Nanotubes / epoxy
Objective
- Build up highly dispersed Single-Walled Carbon Nanotubes (SWNTs) in epoxy composites with high electrical conductivity and mechanical properties.
Method
- Spray SWNTs/epoxy/solvent onto the preheated substrate and simultaneous polymerization and solvent removing with as received SWNTs and functionalized SWNTs.
Result
- High electrical conductivity of SWNTs/epoxy nanocomposites by the increased dispersion of SWNTs in epoxy matrix.
- High dispersion of the functionalized SWNTs in epoxy matrix. - Easy to control viscosity of SWNTs/epoxy when they achieved high dispersion.
MISSION: Single-Walled Carbon Nanotubes / fiberglass / epoxy composite
Objective
- Increase the mechanical properties of fiber reinforce epoxy composites by only introducing SWNTs into the fiberglass/epoxy interphase.
Method
- Coat SWNTs onto the fiberglass surface and use the traditional composite preparation protocol without any dispersion issue of SWNTs in epoxy matrix.
Result
- More than 20 % increased flexural strength of the SWNTs/fiberglass/epoxy composites by introducing 0.1 wt. % of as received SWNTs into the fiberglass/epoxy interphase.
- High dispersion of SWNTs with high concentration (25 wt. % SWNTs/epoxy) on the fiberglass surface.
- Hybrid SWNTs-silane were chemically bridged the fiberglass/epoxy interphase by fluorinated SWNTs.
- Easy to apply this method to any types of fiber reinforced composite system like carbon fiber, Kevlar, & etc.
MISSION: Sing Walled Carbon Nanotube strain-sensor
Objective
- Use the strain-sensing capability of SWNT films under mechanical deformation as the macroscale strain sensors.
Method
- Monitor the change of electrical response of the SWNT film attached metal substrate under mechanical deformation using Raman and four-point probe method.
Result
- Sensitive Raman peak shift at 1587 cm-1 as a function of tensile strain.
- Linear voltage change under tension
- Could be applied to structural surfaces, e.g., the skin of an aircraft wing, to measure strain at the macro scale.
PERIODE: 2000 ~ 2005
INSTITUTE: RICE University, Houston, Texas
SUMMARY: Integrate Carbon Nanotube Technology into Advanced Composite Materials
MISSION: High temperature layer-by-layer spray deposition of the Single-Walled Carbon Nanotubes / epoxy
Objective
- Build up highly dispersed Single-Walled Carbon Nanotubes (SWNTs) in epoxy composites with high electrical conductivity and mechanical properties.
Method
- Spray SWNTs/epoxy/solvent onto the preheated substrate and simultaneous polymerization and solvent removing with as received SWNTs and functionalized SWNTs.
Result
- High electrical conductivity of SWNTs/epoxy nanocomposites by the increased dispersion of SWNTs in epoxy matrix.
- High dispersion of the functionalized SWNTs in epoxy matrix. - Easy to control viscosity of SWNTs/epoxy when they achieved high dispersion.
MISSION: Single-Walled Carbon Nanotubes / fiberglass / epoxy composite
Objective
- Increase the mechanical properties of fiber reinforce epoxy composites by only introducing SWNTs into the fiberglass/epoxy interphase.
Method
- Coat SWNTs onto the fiberglass surface and use the traditional composite preparation protocol without any dispersion issue of SWNTs in epoxy matrix.
Result
- More than 20 % increased flexural strength of the SWNTs/fiberglass/epoxy composites by introducing 0.1 wt. % of as received SWNTs into the fiberglass/epoxy interphase.
- High dispersion of SWNTs with high concentration (25 wt. % SWNTs/epoxy) on the fiberglass surface.
- Hybrid SWNTs-silane were chemically bridged the fiberglass/epoxy interphase by fluorinated SWNTs.
- Easy to apply this method to any types of fiber reinforced composite system like carbon fiber, Kevlar, & etc.
MISSION: Sing Walled Carbon Nanotube strain-sensor
Objective
- Use the strain-sensing capability of SWNT films under mechanical deformation as the macroscale strain sensors.
Method
- Monitor the change of electrical response of the SWNT film attached metal substrate under mechanical deformation using Raman and four-point probe method.
Result
- Sensitive Raman peak shift at 1587 cm-1 as a function of tensile strain.
- Linear voltage change under tension
- Could be applied to structural surfaces, e.g., the skin of an aircraft wing, to measure strain at the macro scale.