Preparation method of flexible thermal interface material of epoxy resin compounded carbon nanotube array
A technology of carbon nanotube arrays and thermal interface materials, which is applied in the field of preparation of thermal interface materials, can solve the problems of poor mechanical properties of carbon nanotube arrays, affecting the thermal conductivity of composite materials, and small array volume ratios, achieving good thermal conductivity, Effects of improving tensile toughness and improving thermal conductivity
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Embodiment 1
[0025] As a first step, the first will have SiO 2 The Si substrate of the oxide layer was cut into 3×3cm, and high-purity N 2 Blow clean the surface. With toluene as the carbon source and ferrocene as the catalyst, configure 4% ferrocene / toluene solution, take 10ml of the solution and put it into the syringe. In the furnace, Ar was used as the carrier, and the carbon nanotube array was grown at 740 °C for 2~3 hours by means of floating assisted catalysis. After the reaction, the carbon nanotube array was obtained with a diameter of about 80nm, a height of about 400μm~1mm, and a density of 5.97×10 9 ~6.89×10 9 tubes / cm 3 .
[0026] In the second step, take epoxy resin (E44) and polyamide-650 (curing agent), the curing agent is 80wt%-120wt% of the epoxy resin, and then add two Butyl ester (toughening agent), stir evenly to make a polymer system, preheat and dilute the polymer system at 40-60°C during the stirring process, heating time 5-10min, so that the bubbles gradually ...
Embodiment 2
[0029] As a first step, the first will have SiO 2 The Si substrate of the oxide layer was cut into 3×3cm, and high-purity N 2 Blow clean the surface. With toluene as the carbon source and ferrocene as the catalyst, configure 4% ferrocene / toluene solution, take 10ml of the solution and put it into the syringe. In the furnace, Ar was used as the carrier, and the carbon nanotube array was grown at 740 °C for 2~3 hours by means of floating assisted catalysis. After the reaction, the carbon nanotube array was obtained with a diameter of about 80nm, a height of about 400μm~1mm, and a density of 5.97×10 9 ~6.89×10 9 tubes / cm 3 .
[0030] In the second step, take epoxy resin (E44) and polyamide-650 (curing agent), the curing agent is 80wt%-120wt% of the epoxy resin, and then add two Butyl ester (toughening agent), stir evenly to make a polymer system, preheat and dilute the polymer system at 40-60°C during the stirring process, heating time 5-10min, so that the bubbles gradually ...
Embodiment 3
[0033] As a first step, the first will have SiO 2 The Si substrate of the oxide layer was cut into 3×3cm, and high-purity N 2 Blow clean the surface. With toluene as the carbon source and ferrocene as the catalyst, configure 4% ferrocene / toluene solution, take 10ml of the solution and put it into the syringe. In the furnace, Ar was used as the carrier, and the carbon nanotube array was grown at 740 °C for 2~3 hours by means of floating assisted catalysis. After the reaction, the carbon nanotube array was obtained with a diameter of about 80nm, a height of about 400μm~1mm, and a density of 5.97×10 9 ~6.89×10 9 tubes / cm 3 .
[0034] In the second step, take epoxy resin (E44) and polyamide-650 (curing agent), the curing agent is 80wt%-120wt% of the epoxy resin, and then add two Butyl ester (toughening agent), stir evenly to make a polymer system, preheat and dilute the polymer system at 40-60°C during the stirring process, heating time 5-10min, so that the bubbles gradually ...
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