Nano-composite material as well as preparation method and application thereof

A nano-composite material and nano-modification technology, applied in the field of nano-composite materials and their preparation, can solve the problems of general heat resistance and aging resistance, poor mechanical properties, etc., achieve excellent performance, improve mechanical properties, and good dispersion effect Effect

Inactive Publication Date: 2017-09-22
俞惠英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the mechanical properties of the material are not very

Method used

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  • Nano-composite material as well as preparation method and application thereof
  • Nano-composite material as well as preparation method and application thereof
  • Nano-composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In this embodiment, the nanocomposite is prepared from nano-modified masterbatch and polypropylene, the mass ratio of nano-modified masterbatch to polypropylene is 4:9, and the nano-modified masterbatch is prepared from The following components by weight were prepared:

[0041]

[0042] The preparation method is as follows:

[0043] (1) Under the protection of nitrogen, polypropylene, nano-calcium carbonate, nano-cellulose, nano-silicon carbide, silane coupling agent, first monomer, second monomer and initiator were swollen at 25°C for 10min, and then at 100 Stir and react at ℃ for 0.5 hours, and dry the product to obtain a nano-modified masterbatch;

[0044] (2) Mix the nano-modified masterbatch and polypropylene evenly, and knead in a twin-screw extruder. The preheating temperature in the screw region of the twin-screw extruder is 300° C., and the screw speed is 400r / min, to obtain The nanocomposite.

Embodiment 2

[0046] In this embodiment, the nanocomposite material is prepared from nano-modified masterbatch and polypropylene, the mass ratio of nano-modified masterbatch to polypropylene is 4.8:10, and the nano-modified masterbatch is made of The following components by weight were prepared:

[0047]

[0048]

[0049] The preparation method is as follows:

[0050] (1) Under the protection of nitrogen, polypropylene, nano-calcium carbonate, nano-cellulose, nano-silicon carbide, silane coupling agent, first monomer, second monomer and initiator were swollen at 20°C for 15min, and then at 80 Stir and react at ℃ for 5 hours, and dry the product to obtain a nano-modified masterbatch;

[0051] (2) Mix the nano-modified masterbatch and polypropylene evenly, and knead in a twin-screw extruder, the preheating temperature of the screw area of ​​the twin-screw extruder is 200°C, and the screw speed is 300r / min, to obtain The nanocomposite.

Embodiment 3

[0053] In this embodiment, the nanocomposite is prepared from nano-modified masterbatch and polypropylene, the mass ratio of nano-modified masterbatch to polypropylene is 5:9, and the nano-modified masterbatch is prepared from The following components by weight were prepared:

[0054]

[0055]

[0056] The preparation method is as follows:

[0057] (1) Under the protection of nitrogen, polypropylene, nano-calcium carbonate, nano-cellulose, nano-silicon carbide, silane coupling agent, first monomer, second monomer and initiator were swelled at 10°C for 20min, and then at 90 Stir and react at ℃ for 3 hours, and dry the product to obtain a nano-modified masterbatch;

[0058] (2) Mix the nano-modified masterbatch and polypropylene evenly, and knead in a twin-screw extruder. The preheating temperature in the screw region of the twin-screw extruder is 250° C., and the screw speed is 250r / min, to obtain The nanocomposite.

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Abstract

The invention provides a nano-composite material as well as a preparation method and application thereof. The nano-composite material provided by the invention is a nano-modified master batch prepared from polypropylene, nano calcium carbonate, carbon nanotubes, nano-silicon carbide, nano-cellulose, a silane coupling agent, a first monomer, a second monomer and an initiator; the nano calcium carbonate, the nano-silicon carbide, the carbon nanotubes and the nano-cellulose are dispersed in the nano-modified master batch, so that the nano-modified master batch has good mechanical properties; furthermore, the silane coupling agent can enhance the compatibility between the nano calcium carbonate and the ceramic nanoparticles as well as a polypropylene material, so that the nano-modified master batch has a better dispersion effect; the nano-composite material having an intercalated structure is obtained by using an in-situ grafting intercalation technique, so that the nano-compounding between the polypropylene and inorganic matters can be realized, and the mechanical properties, heat resistance, aging resistance and the like of polypropylene plastics are effectively improved.

Description

technical field [0001] The invention belongs to the field of nano-modified composite materials, and relates to a nano-composite material and a preparation method and application thereof. Background technique [0002] Due to its light weight and non-toxicity, polyethylene has the advantages of excellent dielectric properties, chemical stability and corrosion resistance, and is cheap and easy to form and process. It can be widely used in electrical appliances, chemicals, food, machinery and other industries. With the continuous development of science and technology, higher requirements are put forward for the performance of polyethylene materials, and it is hoped that it will have more excellent mechanical properties and heat and aging resistance. Therefore, the modification of polyethylene is currently a research hotspot. [0003] CN 103881187 A discloses a nano-carbon fiber modified polyethylene material, the components of which are proportioned by mass percentage: polyethy...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L51/06C08L1/02C08K13/04C08K3/26C08K7/24C08K3/34C08K5/54C08F255/02C08F212/08C08F220/06C08F222/06
CPCC08L23/12C08F255/02C08K2003/265C08K2201/003C08K2201/011C08L2201/08C08L2205/03C08L51/06C08L1/02C08K13/04C08K3/26C08K7/24C08K3/34C08K5/54C08F212/08C08F222/06C08F220/06
Inventor 俞惠英
Owner 俞惠英
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