Preparation method of carbon nanotube, nickel and aluminum composite powder reinforced polyethylene-based composite material

A carbon nanotube and polyethylene-based technology, which is applied in metal material coating process, gaseous chemical plating, coating, etc., can solve the problems of damaged mechanical properties, complicated technology, and difficulty in large-scale application, and achieves comprehensive Improved performance and high bonding strength

Inactive Publication Date: 2011-12-28
SANITARY EQUIP INST ACAD OF MILITARY MEDICAL SCI PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The first method is simple, but it cannot solve the problem of the dispersion of CNTs in polymer-based composites and the interfacial infiltration between them and the matrix; although the second method can improve the dispersion of CNTs in polymer-based composites to a certain extent , but the residual solvent is not easy to remove in the solution blending, and the residual solvent in the system will reduce the glass transition temperature of the composite material and damage the mechanical properties; although the t

Method used

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  • Preparation method of carbon nanotube, nickel and aluminum composite powder reinforced polyethylene-based composite material
  • Preparation method of carbon nanotube, nickel and aluminum composite powder reinforced polyethylene-based composite material
  • Preparation method of carbon nanotube, nickel and aluminum composite powder reinforced polyethylene-based composite material

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Experimental program
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Effect test

Embodiment 1

[0017] Add 2.907 grams of nickel nitrate hexahydrate and 55.187 grams of aluminum powder into 1L of deionized water, then add dropwise 500ml of sodium hydroxide solution with a concentration of 0.04mol / L to the above solution under the condition of stirring at 500 rpm with a magnetic stirrer , the reaction produces Ni(OH) with a mass percentage of Ni and Al elements of 1:94 2 / Al binary colloid, and then the prepared binary colloid was dried in a vacuum furnace at 120°C for 6 hours, and calcined in a nitrogen atmosphere at 200°C for 4 hours, and the heating rate of the furnace was 8°C / min, thereby obtaining a NiO / Al catalyst precursor ; Take the obtained NiO / Al and spread it in a quartz boat, and place the quartz boat in the constant temperature zone in the middle of the quartz reaction tube. First, nitrogen is introduced into the reaction tube to remove the air. Feed hydrogen at 200ml / min for 2 hours to reduce NiO / Al to Ni / Al, stop feeding hydrogen, raise the furnace temperat...

Embodiment 2

[0019] The specific method and steps are the same as in Example 1, but the different conditions are: 2.907 grams of nickel nitrate hexahydrate and 55.765 grams of aluminum powder are added to 1L of deionized water, the weight ratio of Ni and aluminum in the Ni / Al catalyst is 1:95, chemical vapor phase The time for depositing CNTs was 15 minutes, and finally a CNTs / Ni / Al composite powder with a mass content of carbon nanotubes of 3.5%, a nickel content of 1%, and an aluminum content of 95.5% was obtained.

Embodiment 3

[0021]The specific method and steps are the same as in Example 1, but the different conditions are: 2.907 grams of nickel nitrate hexahydrate and 54.3 grams of aluminum powder are added to 1L of deionized water, the weight ratio of Ni and aluminum in the Ni / Al catalyst is 1: 92.5, chemical vapor phase The time for depositing CNTs was 45 minutes, and finally a CNTs / Ni / Al composite powder with a mass content of carbon nanotubes of 6.5%, a nickel content of 1%, and an aluminum content of 92.5% was obtained.

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Abstract

The invention relates to the field of polyethylene composite materials, in particular to a preparation technology for a carbon nanotube/nickel/aluminum in-situ enhanced polyethylene based composite material, and aims to provide a method for keeping controllable contents and uniform dispersion and distribution of the carbon nanotubes and metal composite powder in a polymer based composite materialand keeping good interface infiltration of carbon tubes and a base and high binding strength. The method comprises the following steps of: synthesizing CNTs (Carbon Nanotubes)-Ni-Al composite powder with uniformly dispersed CNTs, excellently kept structure and controllable content by using a chemical vapor deposition method; and doping the in-situ composite powder into a polyethylene base by using a melt blending method so as to prepare the CNTs/Ni/Al/polyethylene based composite material with high strength and modulus and excellent conductivity and heat-conducting property. By adopting the composite powder, the proportion of the carbon nanotubes, nickel and aluminum can be controlled excellently; meanwhile, the problem of dispersion of the metal and the carbon nanotubes in the composite material can be solved well; the carbon nanotubes do not agglomerate in the composite powder and are widely dispersed to achieve a nano-size effect; and the carbon nanotubes have high binding strengthwith the base, so that the polyethylene based composite material can be effectively enhanced by the carbon nanotubes and the aluminum, and the comprehensive performances such as strength, conductivity, heat conduction and the like of the composite material are greatly improved.

Description

technical field [0001] The invention relates to the field of preparation of polyethylene-based composite materials, and more specifically relates to the preparation technology of carbon nanotube / nickel / aluminum in-situ reinforced polyethylene-based composite materials. Background technique [0002] With the rapid development of the modern polyolefin industry, polyethylene (Polyethylene, PE) has become the largest synthetic resin product in the world today, playing an increasingly important role in various industries such as national defense and automobiles. However, PE resin has disadvantages such as low strength, poor electrical conductivity and heat resistance, and insufficient barrier properties, which greatly limit the application and development of PE. Therefore, improving the strength, electrical conductivity, and thermal conductivity of PE resin has become one of the problems to be solved in the field of polyethylene materials. [0003] Carbon nanotubes (Carbon Nanot...

Claims

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Application Information

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IPC IPC(8): C23C16/44C23C16/30C08L23/06C08K7/00C08K3/04C08K3/08
Inventor 田丰何春年李钒刘长军杨健邢楠
Owner SANITARY EQUIP INST ACAD OF MILITARY MEDICAL SCI PLA
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