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A method and device for surface modification of polymer materials

A polymer material and surface modification technology, applied in the field of polymer material surface modification, can solve the problems of unsatisfactory grafting effect on the surface of polymer materials, uncontrollable reaction temperature, and incapable of continuous production, etc. The effect of shortening the reaction time and improving the grafting rate

Active Publication Date: 2011-11-30
CHINESE TEXTILE ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the prior art, there are defects such as incapable of continuous production, uncontrollable reaction temperature, or unsatisfactory grafting effect on the surface of polymer materials in the method of using plasma initiation technology to modify the surface of polymer materials. In view of the above defects, the present invention is proposed The surface grafting method of polymer materials has the advantages of controllable graft polymerization temperature, short reaction time, ideal grafting effect and continuous processing.

Method used

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  • A method and device for surface modification of polymer materials
  • A method and device for surface modification of polymer materials
  • A method and device for surface modification of polymer materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Plasma Initiated Vapor Phase Grafting of Acrylic Acid (AAc) on Polypropylene (PP) Films

[0049] Working conditions: argon, frequency 13.56MHz, power 100W.

[0050] Place the polypropylene film in the plasma processor, evacuate the system pressure to 50Pa, and the flow rate of the working gas argon is 800cm 3 / min, treated under the above conditions for 10min, the polypropylene film after plasma treatment was placed in the air at normal temperature and pressure for 50min to generate peroxide.

[0051] The polypropylene film placed in the air is placed in a reaction chamber with a pressure of 500Pa and a temperature of 60°C, and the liquid acrylic monomer (molecular weight 72.06g / mol; under normal temperature and pressure, density 1.05g / cm 3 ; under normal pressure, boiling point 141°C) preheated to 70°C in advance, the preheated liquid monomer enters the above reaction chamber and immediately vaporizes, the flow rate of the gaseous monomer is controlled at 2000cm 3 / m...

Embodiment 2

[0053] Plasma Initiated Vapor Phase Grafting of Acrylic Acid (AAc) on Polypropylene (PP) Films

[0054] Working conditions: argon, frequency 40KHz, power 600W.

[0055] Place the polypropylene film in the plasma processor, evacuate the system pressure to 50Pa, and the flow rate of the working gas argon is 100cm 3 / min, under the above conditions for 10min, the plasma treatment ends.

[0056] The polypropylene film after plasma treatment is placed in a reaction chamber with a pressure of 50 Pa and a temperature of 50°C. The liquid acrylic monomer is preheated to 70°C in advance. The flow rate of the body is controlled at 500cm 3 / min, the grafting reaction time is 15min, after the reaction is completed, the gaseous monomer supply is stopped first, the vacuum is continued for 1min, the atmosphere is connected, the reaction chamber returns to normal pressure, and the modified polypropylene film is taken out.

Embodiment 3-6

[0058] The technological process of embodiment 3-6 and part technological parameter are with embodiment 1, and different technological parameter is as described in the following table:

[0059] Process conditions

[0060] Description: PP means polypropylene; PBT means polybutylene terephthalate; PTFE means polytetrafluoroethylene; PE polyethylene; PPS polyphenylene sulfide; AAc means acrylic acid; HEMA means methacrylic acid-2-hydroxyethyl ester; GMA means glycidyl methacrylate; MAAc methacrylic acid.

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Abstract

The invention provides a method for surface modification of a polymer material: the polymer material is first subjected to surface plasma treatment; then the treated polymer material is put into a gas-phase grafting reaction device that has been heated to 50-150°C in advance, Subsequently, a gaseous or atomized monomer is introduced to carry out a gas-phase grafting reaction with the surface of the treated polymer material, and the device for performing the above reaction includes a plasma grafting device, and the plasma grafting device includes a polymer The material surface plasma treatment device and the polymer material surface gas phase grafting reaction device after plasma treatment are characterized in that a temperature control system is set in the plasma grafting device. The device and method have the advantages of controllable temperature during graft polymerization, short polymerization reaction time, ideal grafting effect, continuous industrial processing, and the like.

Description

technical field [0001] The present invention relates to a method for surface modification of polymer materials, more specifically, to a method for surface modification of polymer materials using plasma-induced graft polymerization, the polymerization process is a gas phase grafting process, and also relates to A device used during the surface modification of polymers. Background technique [0002] Plasma technology has been widely used in the field of surface modification of various materials. It is usually divided into atmospheric pressure plasma technology and low pressure plasma technology. These two technologies have their own advantages in practical applications: the former can be used under atmospheric pressure conditions It can work under the ground without a closed cabin, and can realize continuous production with low cost; the latter is easy to control, uses a wide range of working gases, easy to adjust the treatment mode, and has uniform treatment effects. However...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/16
Inventor 任婉婷李鑫
Owner CHINESE TEXTILE ACAD
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