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Preparation method of carbon nano-tube/polypropylene composite material

A technology of carbon nanotubes and composite materials, which is applied in the field of preparation of carbon nanotubes/polymer composites, which can solve the problems of poor two-phase interface bonding, brittle fracture, and poor material toughness, etc., to achieve good dispersion and improve the surface The effect of functionalization efficiency and simple preparation process

Inactive Publication Date: 2009-05-13
上海华实纳米材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although polypropylene has many advantages, it still has many disadvantages when used as a structural material: poor toughness, insufficient wear resistance, greater brittleness at low temperatures, etc.
[0007] Carbon nanotubes are inorganic non-polar materials, and polypropylene is an organic polar material. In the carbon nanotube / polypropylene composite materials prepared directly by the general melt blending method, the two-phase interface is poorly bonded, and the carbon nanotubes have no The clusters of order are arranged in the polypropylene matrix, which is reflected in the poor toughness of the material, which is prone to brittle fracture during use, and cannot reflect the excellent mechanical properties of carbon nanotubes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Weigh 5.0g of CNTs, after jet milling, mix with 3.0g of sodium deoxycholate and 500ml of sodium hydroxide solution with a mass concentration of 0.3%, ultrasonicate for 30min, stir with a stirrer for 1.5h, and place in a drying oven Dry at 120°C until the moisture is completely evaporated, take out and pulverize, and put the mixture in N 2 Under the protection of the atmosphere, react at 800°C for 30min, and the product is 2 After rapid cooling in the atmosphere, wash with water and filter until neutral, dry in a vacuum oven at 70°C for 1 hour, and set aside;

[0025] 2) Take nitric acid with a mass concentration of 68.0% and sulfuric acid with a mass concentration of 98% according to the volume ratio of 1:3, mix them, add deionized water for dilution, and the volume ratio of deionized water to mixed acid is 0.4:1;

[0026] 3) Add the product of step 1) to the above mixed acid solution at a weight / volume ratio of 1.0g / 100ml. After the mixture is sonicated for 40 minu...

Embodiment 2

[0042] 1) Weigh 5.0g of CNTs, after jet milling, mix with 5.0g of sodium dodecylsulfonate and 500ml of sodium hydroxide solution with a mass concentration of 0.5%, ultrasonicate for 40min, stir with a stirrer for 2h, and place in a drying oven Dry at 120°C until the moisture is completely evaporated, take out and pulverize, and put the mixture in N 2 Under the protection of the atmosphere, react at 700°C for 40min, and the product is 2 After rapid cooling in the atmosphere, wash with water and filter until neutral, dry in a vacuum oven at 70°C for 1 hour, and set aside;

[0043] 2) Take nitric acid with a mass concentration of 68.0% and sulfuric acid with a mass concentration of 98% according to the volume ratio of 1:3, mix them, add deionized water for dilution, and the volume ratio of deionized water to mixed acid is 1.5:1;

[0044] 3) Add the product of step 1) to the above mixed acid solution at a weight / volume ratio of 1.0g / 100ml. After the mixture is sonicated for 30 mi...

Embodiment 3

[0050] 1) Weigh 5.0g CNTs, after jet milling, mix with 8.0g surfactant (fatty acid amide 1.0g+C 12～13 Alcohol polyoxyethylene ether 3.0g+C 12～15 Alcohol polyoxyethylene sulfate sodium salt (4.0g) and 500ml of potassium hydroxide solution with a mass concentration of 0.5% are mixed, ultrasonicated for 60min, stirred by a stirrer for 2h, dried in a drying oven at 120°C until the water is completely evaporated to dryness, taken out and pulverized , the mixture at N 2 Under the protection of the atmosphere, react at 400°C for 60min, the product is 2 After rapid cooling in the atmosphere, wash with water and filter until neutral, dry in a vacuum oven at 70°C for 1 hour, and set aside;

[0051] 2) Take nitric acid with a mass concentration of 68.0% and sulfuric acid with a mass concentration of 98% according to the volume ratio of 1:3, mix them, add deionized water for dilution, and the volume ratio of deionized water to mixed acid is 0.1:1;

[0052] 3) Add the product of step 1)...

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Abstract

The invention discloses a making method of carbon nanometer pipe / polymer composite material, which comprises the following steps: proceeding acid-alkaline oxidizing disposal for carbon nanometer pipe; improving surface functional efficiency; reducing the surface energy on the nanometer pipe; adding in the grafted polypropylene reacting composition of maleic anhydride; fusing; squeezing; obtaining the product.

Description

technical field [0001] The invention relates to a preparation method of carbon nanotube / polymer composite material. Background technique [0002] Polypropylene (PP) has developed extremely rapidly since its industrialization in 1957, and is a general-purpose plastic with a wide range of applications. Polypropylene is mainly obtained by solution polymerization, relying on Ziegler 2 Natta catalysts to obtain anion coordination polymerization. Polypropylene has good heat resistance, its melting point reaches 164°C, and it can be used for a long time at 100-120°C. In addition, polypropylene also has excellent corrosion resistance, electrical insulation and low dielectric rate, and has outstanding rigidity and folding resistance. Polypropylene is mostly used for injection molding. In addition to daily necessities, it also manufactures industrial parts such as construction, mechanical parts, electrical equipment, etc.; it can also be used to produce films, sheets, pipes, monofil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/06C08K11/00B29C47/40B29C47/92B29B9/12C08K3/04B29C48/92
Inventor 黄德欢施新华陈永良
Owner 上海华实纳米材料有限公司
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