Magnetically oriented ice-template method for conductive and wear-resistant composites

A technology of composite materials and ice templates, applied in the field of conductive and wear-resistant composite materials, can solve the problems that are not enough to meet the actual use requirements, and achieve the effect of low price and simple process principle

Inactive Publication Date: 2017-02-15
SHANTOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are few studies on the ordering of carbon nanotubes in intact bulk composites.
[0004] At present, there have been some reports on the use of magnetic induction to order carbon nanotubes. This method has also been introduced into the ordering of carbon nanotubes in monolithic composite materials. Related reports have shown that the above-mentioned composite materials have electrical and The mechanical properties have been greatly improved. Patent CN201010614797.6 introduces a weak magnetic field-induced ordered carbon nanotube / epoxy resin composite material and its preparation method, but in some high-standard and high-demand In industries such as the aerospace industry, the improvement of its performance is not enough to meet the actual use requirements, so there is an urgent need for a carbon nanotube with better sorting performance and a corresponding better arrangement and combination of carbon nanotubes

Method used

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  • Magnetically oriented ice-template method for conductive and wear-resistant composites
  • Magnetically oriented ice-template method for conductive and wear-resistant composites
  • Magnetically oriented ice-template method for conductive and wear-resistant composites

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Place 1 g of multi-walled carbon nanotubes with a diameter of 10-30 nm and a length greater than 2 μm in concentrated H 2 SO 4 : concentrated HNO 3(Volume ratio) = 3:1 in 200ml mixed acid solution, ultrasonically oscillate for 20 minutes, freeze and stand for 10 minutes, and repeat this process for 3 hours; then ultrasonically oscillate for 20 minutes, stand at room temperature for 10 minutes, and after repeated treatment for 17 hours, wash with water until neutral. During the sonication process, keep the temperature at 40°C.

[0040] (2) the carbon nanotube that obtains in the step (1) is dropped into the 10g / L SnCl of 200ml 2 2H 2 Sensitization treatment was carried out in O and 40g / L HCl mixed solution for 40min, and then washed to neutrality; the carbon nanotubes after sensitization treatment were put into 0.5g / LPdCl 2 , 0.25mL HCl, 20g / LH 3 BO 3 200ml of the mixed solution was activated for 40min, followed by washing with water until neutral. Configure 1...

Embodiment 2

[0045] (1) 1.5 g of multi-walled carbon nanotubes with a diameter of 10-30 nm and a length greater than 2 μm were placed in concentrated H 2 SO 4 : concentrated HNO 3 (Volume ratio) = 3:1 in 250ml mixed acid solution, ultrasonically oscillate for 15 minutes, refrigerate for 15 minutes, and repeat this process for 3 hours; then ultrasonically oscillate for 20 minutes, and stand at room temperature for 10 minutes. After repeated treatment for 20 hours, wash with water until neutral. During sonication, keep the temperature at 45°C.

[0046] (2) the carbon nanotube that obtains in the step (1) drops into the 10g / L SnCl of 250ml 2 2H 2 Sensitization treatment was carried out in O and 40g / L HCl mixed solution for 40min, and then washed to neutrality; the carbon nanotubes after sensitization treatment were put into 0.5g / LPdCl 2 , 0.25mL HCl, 20g / LH 3 BO 3 250ml of the mixed solution was activated for 40min, followed by water washing to neutrality. Configure 1.5L plating soluti...

Embodiment 3

[0051] (1) 2 g of multi-walled carbon nanotubes with a diameter of 10-30 nm and a length greater than 2 μm were placed in concentrated H 2 SO 4 : concentrated HNO 3 (Volume ratio) = 3:1 in 250ml mixed acid solution, ultrasonically oscillate for 18 minutes, refrigerate for 13 minutes, and repeat this process for 3 hours; then ultrasonically oscillate for 20 minutes, and stand at room temperature for 10 minutes. After repeated treatment for 18 hours, wash with water until neutral. During the sonication process, keep the temperature at 50°C.

[0052] (2) the carbon nanotube that obtains in the step (1) drops into the 10g / L SnCl of 250ml 2 2H 2 Sensitization treatment was carried out in O and 40g / L HCl mixed solution for 40min, and then washed to neutrality; the carbon nanotubes after sensitization treatment were put into 0.5g / LPdCl 2 , 0.25mL HCl, 20g / L H 3 BO 3 250ml of the mixed solution was activated for 40min, followed by water washing to neutrality. Configure 2L plati...

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Abstract

A disclosed electric-conduction wear-resistance composite material molded by using a magnetic-orienting ice-templating method comprises 1-3 parts by mass of a carbon tube, 1 part by mass of a binder, 1 part by mass of a dispersant and 96-98 parts by mass of a resin material, and has an ordered fiber wall porous structure formed by directional alignment of a carbon nanotube. The invention also discloses a method for the composite material. Magnetic orientation is employed aiming at the carbon nanotube which is uniformly plated with nickel and is subjected to heat treatment, also an ice-templating method is employed for fixing the orientation and assisting to correct the orientation direction and further for preparing the carbon nanotube ordered frame, and the construction manner is efficient, simple in technological principle, low in price and suitable for large-scale production.

Description

technical field [0001] The invention relates to the technical field of carbon nanomaterial processing technology and application, in particular to a conductive and wear-resistant composite material shaped by magnetic orientation ice template method. Background technique [0002] In recent years, in the research field of carbon nanotubes as a reinforcing phase, researchers have encountered a large number of research difficulties, such as the poor dispersion of carbon nanotubes in the polymer matrix due to agglomeration, and the free carbon nanotubes Dispersion is even dispersed in the matrix after a certain degree of ordering, but due to the performance limitations of the matrix itself, the excellent performance of carbon nanotubes cannot be fully exerted. At present, referring to the reports at home and abroad, the relevant research is still in the preliminary stage on which distribution method of carbon nanotubes in the matrix can maximize their functional properties. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/08C08L63/00C08K9/02C08K9/04C08K9/00C08K7/24
CPCC08K7/24C08K9/00C08K9/02C08K9/04C08K2201/003C08K2201/004C08L63/00C08L79/08
Inventor 程西云周彪彭美华严茂伟张建峰
Owner SHANTOU UNIV
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