Antistatic composite nano material film and preparation method thereof

A technology of material film and composite film, which is applied in the field of polymer composite film preparation, can solve the problems of easy permeation, limit the application of TPU film material, and cause danger, etc., and achieve the effect of simple process, wide prospects and uses, and strong operability

Active Publication Date: 2016-09-28
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the essential characteristics of the polymer, its volume resistivity (ρ v ) generally up to 10 12 ~10 15 Ω·cm, it is easy to accumulate static electricity and cause danger, and some small molecules such as oxygen and water vapor are easy to permeate out, which greatly limits the application of TPU film materials in electrical and barrier aspects

Method used

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  • Antistatic composite nano material film and preparation method thereof
  • Antistatic composite nano material film and preparation method thereof
  • Antistatic composite nano material film and preparation method thereof

Examples

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preparation example Construction

[0022] A method for preparing an antistatic composite nanomaterial film, the specific steps are:

[0023] (1) Preparation of GONRs: First, 180 mL of concentrated H 2 SO 4 Slowly added to the round bottom flask and stirred, then 20 mLH 3 PO 4 Slowly drop in, mix evenly at a certain speed, slowly add 1 g MWCNTs and stir for 30 min until uniform, then add 6 g KMnO 4 Slowly added to the above mixture; the above reaction system was stirred in an oil bath at 50 °C for 24 h, then cooled to room temperature, and then poured into a solution containing 10 mL H 2 o 2 500 mL of deionized water was stirred in an ice bath for 1 h. At this time, the solution turned dark green, indicating that the reaction was complete. Then, an appropriate amount of HCl was added and centrifuged until neutral, and finally dried in a freeze dryer to obtain GONRs;

[0024] (2) Preparation of FGONRs: 500 mg GONRs were dissolved in a mixed solution of 250 mL deionized water and 200 mL absolute ethanol, and ...

Embodiment 1

[0030] Take 15 g of fully dried TPU and swell in 60 mL of DMF at 60°C for 24 h to obtain a viscous TPU solution; then take a DMF solution containing 0.06 g of FGNRs according to the volume ratio, add 0.015 g of CNFs and ultrasonicate at 100 W for 1 h to form FGNRs:CNFs 4:1 homogeneously mixed solution, mixed with swollen TPU; mechanically stirred for 5 h, then the mixture was ultrasonicated for 1 h to remove air bubbles, then coated with a 0.08 mm film on a film coater, and finally in a dry box Dry at 70°C for 24 h until the solvent evaporates completely to obtain a 0.5wt% FGNRs-CNFs / TPU composite film.

Embodiment 2

[0032]Take 37.5 g of fully dried TPU and swell in 60 mL of DMF at 60 °C for 24 h to obtain a viscous TPU solution; then take a DMF solution containing 0.06 g of FGNRs according to the volume ratio, add 0.015 g of CNFs and ultrasonicate at 100 W for 1 h to form FGNRs:CNFs 4:1 homogeneously mixed solution, mixed with swollen TPU; mechanically stirred for 5 h, then the mixture was ultrasonicated for 1 h to remove air bubbles, then coated with a 0.08 mm film on a film coater, and finally in a dry box Dry at 70°C for 24 h until the solvent evaporates completely to obtain a 0.2wt% FGNRs-CNFs / TPU composite film.

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Abstract

The invention discloses an antistatic composite nano material film and a preparation method thereof. The preparation method comprises the following steps: preparing graphene oxide nanoribbons (GONRs) by an improved Hummers process, modifying with KH550 to obtain K-GONRs, and reducing with hydrazine hydrate to obtain FGONRs; blending the FGONRs with CNFs (carbon nanotubes) in the ultrasonic state to form a nano composite material; and finally, by using a TPU (thermoplastic polyurethane) resin as a matrix, carrying out solution application film forming to obtain the FGNRs-CNFs/TPU composite film. The FGNRs are attached to the framework CNFs to form the stable FGNRs-CNFs network structure, thereby being beneficial to uniform dispersion in the TPU. The FGNRs-CNFs intercalation and TPU matrix are tightly combined, so that the composite material film has excellent antistatic property and barrier property, is applicable to the increasingly developing electronic precise materials, and has wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of polymer composite film preparation, and in particular relates to an antistatic composite nano material film and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane (TPU) is a new generation of synthetic polymer materials. It is a linear multi-block copolymer composed of hard and soft segments. TPU not only has excellent high stretchability, non-toxicity, high transparency, oil resistance, but also a new type of environmentally friendly material. Based on the above performance advantages, TPU can replace a variety of traditional materials and is widely used in medical devices, food packaging, shoe materials and clothing, composite materials and other fields. However, due to the essential characteristics of the polymer, its volume resistivity (ρ v ) generally up to 10 12 ~10 15 Ω·cm, it is easy to accumulate static electricity and cause danger, and some small molec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K9/06C08K3/04C08K7/24C08J5/18
CPCC08J5/18C08K3/04C08K7/24C08K9/06C08L75/04C08J2375/04C08L2201/04C08L2203/16
Inventor 郑玉婴陈宇杨隽逸
Owner FUZHOU UNIV
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