Antistatic release film
An antistatic release film, comprising a substrate layer, an antistatic coating, and a release agent coating. The antistatic coating is located between the release agent coating and the substrate layer; the antistatic coating is obtained by drying a coating liquid; and the coating liquid is composed of the following components in parts by weight: 100 parts of polyurethane resin, 40-60 parts of polyvinyl alcohol, 2-4 parts of sodium octyl sulfate, 1-3 parts of N-ethyl-N—(3-sulfopropyl)-3-methylaniline sodium salt, 8-12 parts of dibutyl sebacate, 40-60 parts of n-butanol, 20-30 parts of isobutyl acetate, 0.8-1.5 parts of hydroxyethyl cellulose, 0.3-0.8 part pf 3-acetylbenzoic acid, 0.2-0.8 part of triethylenetetramine, 0.5-1.2 parts of a silane coupling agent, 0.5-1 part of an antioxidant, and 0.6-2 parts of a leveling agent. The antistatic release film enables the surface resistance of the antistatic coating in the antistatic release film to be almost unchanged after 200 days, thereby improving the performance reliability of the antistatic release film.
1 . An antistatic release film, comprising a substrate layer ( 1 ), an antistatic coating ( 2 ), and a release agent coating ( 3 ); wherein the antistatic coating ( 2 ) is located between the release agent coating ( 3 ) and the substrate layer ( 1 ); the antistatic coating ( 2 ) is obtained by drying a coating liquid; and the coating liquid is composed of the following components in parts by weight:
100 parts of polyurethane resin,
40-60 parts of polyvinyl alcohol,
2-4 parts of sodium octyl sulfate,
1-3 parts of N-ethyl-N-(3-sulfopropyl)-3-methylaniline sodium salt,
8-12 parts of dibutyl sebacate,
40-60 parts of n-butanol,
20 - 30 parts of isobutyl acetate,
0.8-1.5 parts of hydroxyethyl cellulose,
0.3-0.8 part of 3-acetylbenzoic acid,
0.2-0.8 part of triethylenetetramine,
0.5-1.2 parts of a silane coupling agent,
0.5-1 part of an antioxidant, and 0.6-2 parts of a leveling agent.
2 . The antistatic release film of claim 1 , wherein the antioxidant is selected from an antioxidant 1010, an antioxidant 1024, or an antioxidant 2246;
wherein the antioxidant 1010 is pentaerythritol tetrakis (3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate);
the antioxidant 1024 is 2′,3-Bis[[3-[3,5-di-tert-butyl-4-hydroxyphenyl]propionyl]]propionohydrazide;
the antioxidant 2246 is 2,2′-methylenebis(4-methyl-6-tert-butylphenol).
3 . The antistatic release film of claim 1 , wherein the substrate layer is one of a polyethylene terephthalate (PET) layer, a thermoplastic polyurethane (TPU) layer, a polyarylate (PAR) layer, a cast polypropylene (CPP) layer, a polyvinyl chloride (PVC) layer, a styrene-ethylene-propylene-styrene block copolymer (SEPS) layer, and a styrene-ethylene-butylene-styrene block copolymer (SEBS) layer.
4 . The antistatic release film of claim 1 , wherein the antistatic coating has a thickness of 3-1 0 pm.