At present, the curing methods of silicone coating materials used in release paper at home and abroad are mainly thermal curing and UV curing. Compared with UV curing, thermal curing silicone resin materials are cheap, but the system generally uses solvent systems, high curing temperature, high energy consumption, low efficiency, and many substrates cannot be baked at high temperatures.
Release coating (isolation coating) is an anti-stick coating that prevents the prepreg from sticking and protects the prepreg from contamination. Compared with traditional UV resin, due to the greater absorption and penetration of oxygen by silicone acrylate resin and its oligomers (oxygen diffusion coefficient of polydimethylsiloxane is 605×10-10cm/s, while polymethyl methacrylate is only 0.154×10-10cm/s), Therefore, the current technology key to the realization of UV silicone acrylate release paper products is to effectively remove oxygen from the system, such as pre-purging, for very thin coatings (< 10μm) is an effective way to quickly form a seal on the surface of the substrate to hinder the absorption and diffusion of oxygen. However, if nitrogen purging protection is adopted, it is necessary to upgrade the original coating equipment, increase the nitrogen production equipment or nitrogen storage equipment, and increase the coating cost.
Therefore, this paper attempts to study the effects of UV curable silicone resins, monomers, prepolymers, auxiliaries and coating methods on the basic properties of coatings without nitrogen protection, and select appropriate resins to prepare silicone release coatings with low stripping force and good adhesion to the substrate.

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