Three-layer structural resin-based composite material and application thereof

A composite material and three-layer structure technology, applied in the direction of synthetic resin layered products, layered products, chemical instruments and methods, etc., can solve problems such as low energy storage density, low breakdown strength, and large dielectric loss, and achieve Effects of high energy storage density, low dielectric constant, and high dielectric constant

Active Publication Date: 2019-05-21
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the content of aligned carbon nanotube bundles is high, the dielectric constant (265, @100Hz) of the prepared polymer matrix composites needs to be further improved; meanwhile, the aligned carbon nanotube bundles / resin composites also have relatively low dielectric loss. Large, low breakdown strength, and low energy storage density

Method used

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  • Three-layer structural resin-based composite material and application thereof
  • Three-layer structural resin-based composite material and application thereof
  • Three-layer structural resin-based composite material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Mix 0.12g of aligned carbon nanotube bundles without surface treatment (20-100μm in length, 2-5μm in diameter) and 20g of bisphenol A epoxy resin (brand E-51), and ultrasonically vibrate at 60°C After stirring for 10 min, add 0.8 g of 2-ethyl-4-methylimidazole, continue stirring for 10 min, and vacuum degassing at 60° C. for 20 min to obtain prepolymer A; divide prepolymer A into two parts equally, For the first prepolymer and the second prepolymer, take the first prepolymer and pour it into a preheated mold, then put the mold into a microwave oven and irradiate it for 5 cycles (each cycle of irradiation process medium heat, heating for 30 s, cooling for 10 s), and after natural cooling, an aligned carbon nanotube / epoxy cured resin composite pre-cured sheet B with a curing degree of 60% was obtained.

[0055] (2) Add 4.38g of barium acetate and 5.84g of tetrabutyl titanate into acetic acid (20mL) and mix well under magnetic stirring at 50°C, and add 5g of polyvinylp...

Embodiment 2

[0078] (1) Mix 0.02g of aligned carbon nanotube bundles without surface treatment (20-100μm in length, 2-5μm in diameter) and 20g of bisphenol A epoxy resin (brand E-51), and ultrasonically vibrate at 60°C After stirring for 10 min, add 0.8 g of 2-ethyl-4-methylimidazole, continue stirring for 10 min, and vacuum degassing at 60° C. for 20 min to obtain prepolymer A; divide prepolymer A into two parts equally, Take a part and pour it into a preheated mold, then put the mold into a microwave oven, and irradiate it for 5 cycles (each cycle of irradiation process is medium heat, heating for 30s, cooling for 10s), after natural cooling, it is solidified Oriented carbon nanotubes / epoxy cured resin composite material precured sheet B with a density of 60%.

[0079] (2) Mix 2g of the polydopamine-coated barium titanate nanofiber PDA@BTnf prepared in Example 1 with 20g of bisphenol A epoxy resin (brand E-51), and stir with ultrasonic vibration at 60°C for 10min. Add 0.8 g of 2-ethyl-4...

Embodiment 3

[0082] (1) Mix 0.12g of aligned carbon nanotube bundles without surface treatment (20-100μm in length, 2-5μm in diameter) and 20g of bisphenol A epoxy resin (brand E-51), and ultrasonically vibrate at 60°C After stirring for 10 min, add 0.8 g of 2-ethyl-4-methylimidazole, continue stirring for 10 min, and vacuum degassing at 60° C. for 20 min to obtain prepolymer A; divide prepolymer A into two parts equally, Take a part and pour it into a preheated mold, then put the mold into a microwave oven, and irradiate it for 5 cycles (each cycle of irradiation process is medium heat, heating for 30s, cooling for 10s), after natural cooling, it is solidified Oriented carbon nanotubes / epoxy cured resin composite material precured sheet B with a density of 60%.

[0083] (2) Mix 6g of polydopamine-coated barium 0 acid nanofiber PDA@BTnf prepared in Example 1 and 20g of bisphenol A epoxy resin (brand E-51), and stir at 60°C for 10min with ultrasonic vibration, Add 0.8 g of 2-ethyl-4-methyl...

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Abstract

The invention discloses a three-layer structure resin matrix composite material and application thereof. An oriented carbon nanotube bundle/epoxy resin composite material (referred to as a layer B) isprepared by a microwave curing method, and a barium titanate nanofiber/epoxy resin composite material (referred to as a layer E) is prepared by a scratch coating-thermocuring method; the B-E-B three-layer structural composite material is formed by a layer-by-layer curing technology. Compared with a conductor/insulation layer/polymer layer type structural composite material in the prior art, the three-layer structure composite material provided by the invention has high dielectric constant (being greater than 1000, @100 Hz), low dielectric loss and high energy storage density, and the preparation process is controllable and feasible, short in production period, and suitable for large-scale application.

Description

technical field [0001] The invention relates to a resin-based composite material with high energy storage density, high dielectric constant (>1000, 100Hz) and low dielectric loss (<0.6, 100Hz) and its application, especially a three-layer structure resin-based composite material. The composite material and its application belong to the technical field of dielectric functional composite materials. Background technique [0002] With the surge in demand for pulsed power devices, electronic power systems, and compact, low-cost electrical appliances, there is an urgent need for electrical energy storage components that can store and output energy instantaneously. Dielectric capacitors do not involve electrochemical reactions when charging and discharging, and are generally solid, do not change in shape, and have a high operating temperature, which is conducive to ensuring the stable operation and service reliability of pulse power equipment and electronic power systems. Hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/24C08J3/28C08L63/00C08K3/04C08K9/10C08K9/00C08K7/08B32B27/28B32B27/38B32B27/20B32B27/08
Inventor 顾嫒娟赵丹梁国正袁莉
Owner SUZHOU UNIV
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