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Surface modification pretreatment method of flexible organic polymer substrate

A surface modification and polymer technology, which is applied in the field of surface modification pretreatment of flexible substrates, can solve the problems of poor surface roughness and uniformity of substrates, large damage to flexible substrates, and difficulty in controlling the surface treatment characteristics of substrates.

Pending Publication Date: 2020-05-01
BEIJING CENT FOR PHYSICAL & CHEM ANALYSIS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical modification method represented by mechanical grinding has poor surface roughness and uniformity after treatment, and it is difficult to achieve batch and large-scale preparation
Among the chemical modification methods represented by plasma and alkaline hydrolysis, the surface treatment depth of the substrate in the plasma treatment method is relatively shallow, the requirements for the processing environment are high, and the damage to the flexible substrate is large. The active groups in the active group are easy to lose efficacy; the alkaline hydrolysis treatment method is easy to cause damage to the flexible polymer substrate itself, affecting the main performance of the substrate, and the treatment conditions are not easy to control the surface treatment characteristics of the substrate
The processing method of the existing technology greatly restricts the application of the related technology in the field of flexible devices

Method used

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  • Surface modification pretreatment method of flexible organic polymer substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] In a closed system filled with oxygen circulation (oxygen concentration 40% by volume), commercially available polyethylene terephthalate substrates (PET, thickness 100 µm) were placed under a low-pressure ultraviolet lamp for stepwise irradiation treatment . The treatment temperature is 65° C., first irradiating with ultraviolet light with a wavelength of 280 nm for 10 minutes, and then irradiating with ultraviolet light with a wavelength of 190 nm for 1 minute.

Embodiment 2

[0016] In a closed system filled with oxygen circulation (oxygen concentration 65% by volume), commercially available polyethylene terephthalate substrates (PET, thickness 100 µm) were placed under a low-pressure ultraviolet lamp for stepwise irradiation treatment . The treatment temperature is 45° C., first irradiating with ultraviolet light with a wavelength of 254 nm for 6 minutes, and then irradiating with ultraviolet light with a wavelength of 185 nm for 4 minutes.

Embodiment 3

[0018] In a closed system filled with oxygen circulation (oxygen concentration 80% by volume), the commercially available polyethylene terephthalate substrate (PET, thickness 100 µm) was placed under a low-pressure ultraviolet lamp for stepwise irradiation treatment . The treatment temperature is 80° C., first irradiating with ultraviolet light with a wavelength of 190 nm for 1 minute, and then irradiating with ultraviolet light with a wavelength of 100 nm for 6 minutes.

[0019] For the PET base material pretreated in the above-mentioned examples 1-3 and the untreated PET control sample, the surface roughness of the flexible PET base material was evaluated by atomic force microscopy (AFM), and the X-ray photoelectron energy spectrum analyzer was used to evaluate the surface roughness of the flexible PET base material. (XPS) analysis of the surface chemical composition of PET substrates.

[0020] The results showed that the surface roughness of the untreated PET substrate was...

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Abstract

The invention relates to a surface modification pretreatment method of a flexible organic polymer base material, which realizes surface modification pretreatment of the flexible organic polymer base material through an ultra-short wave ultraviolet stepped irradiation treatment technology of 100-280 nm in an oxygen-enriched atmosphere and under a proper heating condition. According to the method disclosed by the invention, deep treatment of 100-200 nm on the surface of the organic polymer base material can be achieved. The method has the advantages of mild treatment conditions, no damage to thepolymer substrate main body, realization of abundant polar functional groups on the surface of the substrate, effective improvement of the surface roughness and the surface energy of the polymer substrate, improvement of the combinability and the adhesion of the surface of the substrate to other materials, and facilitation of the subsequent modification, bonding, laminating, coating and the likeof the substrate.

Description

technical field [0001] The invention belongs to the field of material modification treatment, and relates to a surface modification pretreatment method of a flexible substrate. Background technique [0002] The rapid development of flexible electronic technology has given rise to various demands for flexible substrate materials. Among them, flexible organic polymer substrate materials are widely used in the industry due to their excellent bending resistance, light weight, ultra-thin, good comprehensive performance and processability. Flexible electronic devices, flexible printed circuits, and flexible packaging substrates are widely used. In many application scenarios, organic polymer substrates need to be laminated, bonded or surface metallized with inorganic, organic or metal materials. However, the surface roughness of organic polymer substrates is usually low, and the surface lacks interaction with other materials. , Bonded polar functional groups, resulting in poor adh...

Claims

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Application Information

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IPC IPC(8): C08J7/12C08L67/02C08L33/12C08L69/00C08L79/08C08L77/00C08L83/04C08L75/04
CPCC08J7/123C08J2367/02C08J2333/12C08J2369/00C08J2379/08C08J2377/00C08J2383/04C08J2375/04
Inventor 张梅刘伟丽崔芃黄雯雯李琴梅
Owner BEIJING CENT FOR PHYSICAL & CHEM ANALYSIS
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