Production method of nucleus micropore filtering film of optimizing flow passage

[0021] 1) Irradiate a 15-micron-thick polyester (PET) insulating film with reactor fission fragments of uranium-235 target fission caused by reactor thermal neutrons, and the irradiation density is 2×10 5 track / cm 2 ;

[0022] 2) Coat a layer of solvent-based release agent on the irradiated polyester insulating film (available in chemical stores, The model is SLX or 518A release agent or other types of release agent are acceptable); Among them, the thickness of the coated solvent-based release agent is 12 μm, and the coating thickness is about 4 μm after the solvent evaporates.

[0023] 3) Coating a 20 μm thick self-adhesive on the BOPP film, and cold-compositing the BOPP film coated with the self-adhesive with the above-mentioned insulating film coated with a layer of solvent-based release agent to form a composite film;

[0024] 4) Etching the composite film at 70°C for 30 minutes in 6.25N NaOH solution, that is, etching the irradiated insulating film on one side to form n...

[0031] 1) The reactor fission fragments of the uranium-235 target fission caused by reactor thermal neutrons are irradiated with a 12-micron thick polycarbonate (PC) insulating film, and the irradiation density is 1.25×10 9 track / cm 2 ;

[0032] 2) Coat a layer of acrylic ester on the irradiated insulating film with a three-drying tunnel coating machine at the drying tunnel temperatures of 40°C, 50°C, and 45°C; wherein, the thickness of the coated acrylic ester is 10 μm, After the solvent evaporates, the coating thickness is about 3.5 μm.

[0033] 3) Coating a 10 μm thick self-adhesive on the BOPP film, and cold-compositing the BOPP film coated with the self-adhesive with the above-mentioned insulating film coated with a layer of acrylic ester to form a composite film;

[0034] 4) In 8N NaOH solution, etch at 50°C for 25 minutes to etch the composite film, that is, single-sided etching of the irradiated insulating film to form non-biconical micropores;

[0035] 5) Wash the ...

[0040] 1) The energy accelerated by the accelerator is 10MeV / u, 40 30 μm thick polyester (PET) insulating film was irradiated with Ar, and the irradiation density was 1×10 4 track / cm 2 ;10MeV / u: means 10 MeV / nucleon (including protons and neutrons)

[0041] 2) Coat a layer of cellulose multi-mixed resin on the irradiated insulating film with a three-drying tunnel coating machine at the drying tunnel temperatures of 50°C, 65°C, and 55°C; wherein, the coated cellulose is mostly The thickness of the mixed resin is 15 μm, and the coating thickness is about 5 μm after the solvent evaporates.

[0042] 3) Coating 25 μm thick self-adhesive on the BOPP film, and cold-compositing the BOPP film coated with self-adhesive with the above-mentioned insulating film coated with a layer of cellulose multi-mixed resin to form a composite film;

[0043] 4) Etching the composite film at 80°C for 45 minutes in 5.5N NaOH solution, that is, etching the irradiated insulating film on one side to for...