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Preparation method of ZnO nanowire/multi-wall carbon nanotube modified polypropylene composite film

A technology of multi-walled carbon nanotubes and polypropylene membranes, applied in chemical instruments and methods, membranes, membrane technology, etc., to achieve the effects of improving thermal conductivity, improving thermal conductivity and pollution resistance, and adapting to a wide range of processes

Inactive Publication Date: 2020-02-04
SICHUAN LONGHUA FILM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PP is flammable and exhibits dripping behavior during combustion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1g ZnO nanowires, 2g MWCNTs and 0.5g water-soluble dispersant sodium dodecylsulfonate were mixed in 500mL ultrapure water / ethanol (V / V=1:4) solvent and dispersed uniformly by ultrasonic. The PIP monomer was dissolved in ultrapure water to prepare a 2g / L aqueous phase solution, and then 500mL ZnO nanowire / MWCNTs mixture was dispersed in 2L PIP aqueous solution. The PP bottom film is flatly sandwiched between the two plates, and then immersed in the PIP aqueous solution dispersed with ZnO nanowires / MWCNTs. After 5 minutes, the water phase solution is poured off, and the excess water phase droplets on the surface of the bottom film are removed. After the surface is completely dry, pour the TMC organic phase with a monomer concentration of 4g / L into the surface of the PP base film, and form a dense composite film on the surface of the PP base film through interfacial polymerization. The interfacial polymerization time is 60s. Take it out and dry it in the air, then heat-tre...

Embodiment 2

[0028] 1.5 g of ZnO nanowires, 3 g of MWCNTs and 1 g of water-soluble dispersant cetyltrimethylammonium bromide (CTAB) were mixed in 500 mL of ethanol / n-butanol (V / V=1:2) solvent and sonicated Disperse evenly. The PIP monomer was dissolved in ultrapure water to prepare a 3g / L aqueous phase solution, and then 500mL ZnO nanowire / MWCNTs mixture was dispersed in 2L PIP aqueous solution. The PP bottom film is flatly sandwiched between the two plates, and then it is immersed in the PIP aqueous solution dispersed with ZnO nanowires / MWCNTs. After 2 minutes, the water phase solution is poured off, and the excess water phase droplets on the surface of the bottom film are removed. After the surface is completely dry, pour the TMC organic phase with a monomer concentration of 6g / L into the surface of the PP base film, and form a dense composite film on the surface of the PP base film through interfacial polymerization. The interfacial polymerization time is 120s. Take it out and dry it i...

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Abstract

The invention discloses a preparation method of a ZnO nanowire / multi-wall carbon nanotube modified polypropylene composite film, and belongs to the technical field of preparation methods of functionalfilms. The preparation comprises the following steps: step 1, controllably synthesizing ZnO nanowires by using an array hydrothermal method; step 2, mixing the ZnO nanowires and multi-walled carbon nanotubes in a solvent by using a water-soluble dispersant to form a ZnO nanowire / multi-walled carbon nanotube dispersion liquid, and performing uniform ultrasonic dispersion; and step 3, dissolving the ZnO nanowire / MWCNTs dispersion liquid in a piperazine (PIP) aqueous solution, placing the solution together with triformyl chloride (TMC) on the surface of a polypropylene (PP) base film, and carrying out interfacial polymerization to form a layer of compact composite film on the surface of the PP base film. The preparation method can obviously improve thermal conductivity and pollution resistance of the PP film, and the process has a wide application range and a simple and convenient method, and is easy for large-scale preparation.

Description

technical field [0001] The invention relates to the technical field of preparation methods of functional films, in particular to a preparation method of a ZnO nanowire / multi-wall carbon nanotube modified polypropylene composite film. Background technique [0002] Polypropylene (PP) is one of the most widely used thermoplastics, and it plays an important role in packaging, textile industry, mold preparation, etc. PP is a multifunctional polymer that is resistant to a variety of chemicals. However, PP is flammable and exhibits dripping behavior during combustion. Therefore, it is necessary to add thermal conductive additives to PP to prevent the product from being damaged by fire, such as pigments, carbon black, rubber, antioxidants, UV stabilizers, etc. can improve this performance. [0003] In recent years, scientists have paid attention to the synergistic effect of mixing thermally conductive fillers of different types, particle sizes, shapes, and structures to improve th...

Claims

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Application Information

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IPC IPC(8): C08J7/04C09D5/16C09D7/61B01D61/02B01D69/12B01D67/00C08L23/12
CPCB01D61/027B01D67/0093B01D69/12B01D69/125B01D2325/22B01D2325/30C08J2323/12C09D5/1687
Inventor 崔旭龙刁锐敏罗灵
Owner SICHUAN LONGHUA FILM CO LTD