Radiation pre-crosslinked polyolefin film and preparation method, and related encapsulation method and encapsulation assembly

An encapsulation method of using a radiation pre-crosslinked polyolefin film, comprising:

• preparing a film after mixing polyolefin raw materials together;
• using a radiation energy source to irradiate the film, wherein the radiation energy source includes one or more of β rays, γ rays, X rays, α rays, and neutron rays and directly stimulates a crosslinking reaction of the polyolefin raw materials;
• adjusting an irradiation dosage of the radiation energy source, such that a crosslinking degree of a pre-crosslinked portion of the film reaches about 3% to about 95%;
• adjusting the irradiation dosage of the radiation energy source, such that the pre-crosslinked portion of the film has a thickness of about 5% to about 100% by a total thickness of the film, wherein:
• that the pre-crosslinked portion has the thickness of about 100% by the total thickness of the film means the film is all pre-crosslinked;
• placing the film between a front protective layer and an encapsulation substrate, and forming an encapsulation assembly with an encapsulated body, wherein the pre-crosslinked portion of the film is in contact with the encapsulated body;
• and
• heating the encapsulation assembly to further crosslink the film to complete the encapsulation.