Method for preparing micro-hole array polyolefine film by electron beam radiation

Abstract

The invention relates to a method of preparing micropore array polyolefin thin film by electron beam irradiation, which belongs to radiation chemistry and macromolecule thin film material processing technique field. The method includes steps: using polyolefin thin film as raw material (including polyolefin macromolecule thin film such as pp, pvc, ptfe), covering template with micropore array pattern on the raw material, using high energy electron beam of 100-400KGy generated by electron accelcrator to irradiate; immerging the raw material into mixed etch solution constituted of H2SO4 and K2Cr2O7, wherein the concentration of H2SO4 is 6-10mol / L, the concentration of K2Cr2O7 is 0.1-0.3mol / L; carrying etch under temperature of 60-90 DEG C for 2-6 h; cleaning, drying and obtaining the micropore array macromolecule polyolefin thin film with regular pattern and accordant size, in which average aperture is 10 mu m.

Description

technical field

[0001] The invention relates to a method for preparing microhole array polyolefin film by electron beam irradiation, which belongs to the technical field of radiation chemistry and polymer film material processing. Background technique

[0002] In today's nanoscience and nanotechnology, the micro- or nano-patterning of polymer materials has special application value, that is to say, the preparation of polymer films through micro- or nano-micropore array templates has become the focus of researchers. Due to the uniformity and accuracy of pore size and pore density, and the cylindrical pore structure, the microporous array membrane has a high filtration rate, excellent mechanical properties and good chemical stability, and is a filter material with excellent performance. In addition, it can also be used in precision filtration, particle detection, determination of oil water content, anti-counterfeiting technology, food preservation and other fields. Ordered po...

Examples

Embodiment 1

[0016] Process and steps in the present embodiment are as follows:

[0017] (1) First prepare H with a concentration of 8 mol / L with deionized water 2 SO 4 Solution and K with a concentration of 0.2379mol / L 2 Cr 2 o 7 solution, the two are mixed to form an etching solution; H 2 SO 4 and K 2 Cr 2 o 7 Use analytically pure chemical products;

[0018] (2) Cover the template with the microhole array pattern on the polyolefin film, and irradiate under the electron beam irradiation produced by the electron accelerator, and the irradiation dose is 150KGy;

[0019] (3) The irradiated film sample is pre-treated by pickling and alkali cleaning, and then immersed in the above-mentioned etching solution; etching is carried out at a temperature of 80 ° C, and the etching reaction time is controlled to be 2 Hour;

[0020] (4) Wash the etched film sample with water, and then put it into a drying oven to dry. After drying, a micropore array polymer polyolefin film with regular patt...

technical field

[0001] The invention relates to a method for preparing microhole array polyolefin film by electron beam irradiation, which belongs to the technical field of radiation chemistry and polymer film material processing. Background technique

[0002] In today's nanoscience and nanotechnology, the micro- or nano-patterning of polymer materials has special application value, that is to say, the preparation of polymer films through micro- or nano-micropore array templates has become the focus of researchers. Due to the uniformity and accuracy of pore size and pore density, and the cylindrical pore structure, the microporous array membrane has a high filtration rate, excellent mechanical properties and good chemical stability, and is a filter material with excellent performance. In addition, it can also be used in precision filtration, particle detection, determination of oil water content, anti-counterfeiting technology, food preservation and other fields. Ordered po...

Examples

Embodiment 1

[0016] Process and steps in the present embodiment are as follows:

[0017] (1) First prepare H with a concentration of 8 mol / L with deionized water 2 SO 4 Solution and K with a concentration of 0.2379mol / L 2 Cr 2 o 7 solution, the two are mixed to form an etching solution; H 2 SO 4 and K 2 Cr 2 o 7 Use analytically pure chemical products;

[0018] (2) Cover the template with the microhole array pattern on the polyolefin film, and irradiate under the electron beam irradiation produced by the electron accelerator, and the irradiation dose is 150KGy;

[0019] (3) The irradiated film sample is pre-treated by pickling and alkali cleaning, and then immersed in the above-mentioned etching solution; etching is carried out at a temperature of 80 ° C, and the etching reaction time is controlled to be 2 Hour;

[0020] (4) Wash the etched film sample with water, and then put it into a drying oven to dry. After drying, a micropore array polymer polyolefin film with regular patt...