Method for preparing nano fiber composite material containing PMMA (Polymethyl Methacrylate)

A composite material and nanofiber technology, applied in the direction of fiber treatment, fiber chemical characteristics, single-component synthetic polymer rayon, etc., to achieve the effect of large application and industrialization value, high mechanical strength and high porosity

Active Publication Date: 2014-07-02
符思敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] How to introduce fluorine-containing molecular polymers and nano-oxide particles into the PMMA modification process through a simple and effective process to obtain high mechanical strength, excellent thermal stability and weather resistance, high porosity, light transmission and air permeability, and possess Nanofibrous materials that block the function of ultrafine particles have always been the goal and direction of material workers, but there are no successful cases so far.

Method used

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  • Method for preparing nano fiber composite material containing PMMA (Polymethyl Methacrylate)
  • Method for preparing nano fiber composite material containing PMMA (Polymethyl Methacrylate)
  • Method for preparing nano fiber composite material containing PMMA (Polymethyl Methacrylate)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Dry 7g of nano-PMMA at 70°C for 2h, add it to 70g of DMAc solvent, and stir evenly for 4h under airtight conditions at 60°C to fully dissolve it to obtain a PMMA solution with a concentration of 10wt%.

[0034] 2) Add 3g of PVDF, stir at room temperature for 0.5h to fully dissolve, and obtain a nano-PMMA / PVDF solution with a mass ratio of 7:3;

[0035] 3) Take 10 mL ethanol solution and add 0.0075 g nano-SiO 2 Particles, ultrasonic vibration for 1h;

[0036] 4) The dispersed nano-SiO 2 Solution is added in the PMMA / PVDF solution, obtains the spinning solution that concentration is 15wt%;

[0037] 5) Uniformly coating the spinning solution on at least one side of the spandex fiber fabric of the structural layer by electrospinning technology to form a nanofiber composite material containing PMMA. figure 1 It is the scanning electron microscope spectrogram of the nanofiber composite material containing PMMA of embodiment 1.

Embodiment 2

[0039] 1) Dry 7g of nano-PMMA at 90°C for 1 hour, then add it to 70g of a solvent with a mass ratio of DMAc / acetone=7:3, and stir evenly for 4 hours under airtight conditions at 60°C to fully dissolve it, and obtain Concentration is the PMMA solution of 10wt%;

[0040] 2) Add 3g of PVF, stir at room temperature for 1 hour to fully dissolve, and obtain a nano-PMMA / PVF solution with a mass ratio of 7:3;

[0041] 3) Take 10 mL ethanol solution and add 0.0075 g nano-SiO 2 Particles, ultrasonic vibration for 1h;

[0042] 4) The dispersed nano-SiO 2 Solution is added in the PMMA / PVF solution, obtains the spinning solution that concentration is 15wt%;

[0043] 5) Uniformly coating the spinning solution on at least one side of the non-woven fabric of the structural layer by electrospinning technology to form a nanofiber composite material containing PMMA.

Embodiment 3

[0045] 1) Dry 9.5g of nano-PMMA at 90°C for 1 hour, then add it to 40g of a solvent with a mass ratio of DMAc / acetone=7:3, and stir evenly at 60°C for 4 hours to fully dissolve it. Obtaining concentration is the PMMA solution of 10wt%;

[0046] 2) Add 0.5g PVDF, stir at room temperature for 1 hour to fully dissolve, and obtain a nano-PMMA / PVDF solution with a mass ratio of 19:1;

[0047] 3) Take 10 mL of ethanol solution and add 0.0075g of nano-Al 2 o 3 Particles, ultrasonic vibration 2h;

[0048] 4) The dispersed nano-Al 2 o 3 Solution is added in the PMMA / PVDF solution, obtains the spinning solution that concentration is 25wt%;

[0049] 5) Uniformly coating the spinning solution on at least one side of the spandex fiber fabric of the structural layer by electrospinning technology to form a nanofiber composite material containing PMMA.

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Abstract

The invention discloses a method for preparing a nano fiber composite material containing PMMA (Polymethyl Methacrylate). The method comprises the following steps: (1) after drying nano PMMA at 70-90 DEG C and adding the nano PMMA into a solvent; and uniformly agitating under a sealed condition at 60 DEG C and dissolving to obtain a PMMA solution; (2) adding a fluorine-containing high-molecular polymer and agitating at a room temperature for dissolving to obtain a nano PMMA/fluorine-containing high-molecular polymer solution; (3) adding an ethanol solution into nano oxide particles and carrying out ultrasonic vibration; (4) adding a dispersed nano oxide solution into the PMMA/fluorine-containing high-molecular polymer solution to obtain a spinning solution; and (5) uniformly coating at least one face of a structural layer fiber fabric with the spinning solution by an electrostatic spinning technology to form the nano fiber composite material containing the PMMA. According to the method, raw materials are easily available; the obtained nano fiber composite material has high mechanical strength, excellent heat stability, excellent weather resistance, high porosity and good light transmission and ventilation performances, has a function of blocking superfine particles and has very great application and industrialization values.

Description

technical field [0001] The invention relates to the field of special nanofiber materials, in particular to a method for preparing nanofiber composite materials containing PMMA. Background technique [0002] Polymethyl methacrylate (PMMA), also known as plexiglass, is one of the most transparent polymer materials, with good optical transmittance, chemical stability, good processing performance and insulation performance, etc., but its The shortcomings that cannot be overcome by itself, its surface heat resistance is poor, low hardness, poor wear resistance, low impact strength, complex modification polymerization process, etc., which limit its application to a certain extent. Therefore, in order to meet the requirements of special working conditions, use functions and simple process, it is necessary to further modify PMMA on the basis of maintaining its good performance. [0003] Fluorine-containing high-molecular polymers, because the polarizability of fluorine atoms is the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M17/00D01F6/52D01D5/00
Inventor 符思敏费辉周建伟刘创
Owner 符思敏
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