Advantages of Carbon Nanotube
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od mechanical properties:Stable diaphragm vibration for better audio performance
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Lightweight:Making the diaphragm thinner and lighter, the speaker can consume lower driving force
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Increase the hardness of the diaphragm:Increase the high frequency of the diaphragm
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Easy chemical modification:The length and characteristics of the carbon nanotubes can be modified with the demand
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Absorb vibration:The carbon nanotubes have shock absorption characteristics, which can reduce distortion
| Factors affecting audio performance | Audio Impact | Benefit of MWCNT |
|---|---|---|
|
Elasticity |
Low frequency sound quality, distortion |
|
|
Tensile Strength |
High frequency sound quality |
|
|
Lightweight |
Driving Force |
|
|
Stability |
Lifetime |
|
| Mechanical Properties | MWCNT | Stainless | Kevlar |
|---|---|---|---|
|
Young’s modulus, Gpa |
270 - 950 |
186 - 214 |
60 - 180 |
|
Tensile Strength, Gpa |
64 - 150 |
0.38 - 1.55 |
3.6 - 3.8 |
|
Density, g/cm3 |
1.3 - 1.4 |
7.7 - 8.1 |
1.44 |
Comparison of material properties (Input=0.126Vrms)
Carbon Nano Tube paint on the membrane is to enhance vibration structure. Therefore, it also effects the total harmonic distortion.
The Sound pressure level of “Carbon membrane ” is Lower than normal unit at low frequency domain (20~100Hz).
There are no obvious difference between both at medium & high frequency domain. (dBSPL)
The THD of “Carbon membrane ” is more lower than normal unit at full frequency domain. The performance is better than normal unit.
Applications of Carbon Nanotube
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Material Process -
Earphone -
Mobile Phone & Speaker
