CN-224197434-U - Ultraviolet-proof film

CN224197434UCN 224197434 UCN224197434 UCN 224197434UCN-224197434-U

Abstract

The utility model belongs to the technical field of ultraviolet-proof films, and particularly relates to an ultraviolet-proof film which comprises an outermost layer, wherein the outermost layer is a structural layer formed by compounding polytetrafluoroethylene and nano silicon dioxide, an ultraviolet-proof layer is arranged on the inner side of the outermost layer, a gas barrier layer is arranged on the inner side of the ultraviolet-proof layer, an electric conduction and heat conduction layer is arranged on the inner side of the gas barrier layer, and an adhesion affinity layer is arranged on the inner side of the electric conduction and heat conduction layer. According to the utility model, the polytetrafluoroethylene and nano silicon dioxide composite material at the outermost layer is anti-fouling and wear-resistant, the internal structure is protected, the ultraviolet-proof layer effectively blocks ultraviolet rays, the aging of articles is prevented, the gas barrier layer can prevent the permeation of gases such as oxygen and the like, the shelf life of articles such as foods and the like is prolonged, the electric conduction and heat conduction of the electric conduction and heat conduction layer can be realized, the requirements of electronic equipment are met, the adhesion affinity layer can firmly adhere other materials, and the layers cooperate, so that the film integrates multiple functions, the problem of insufficient comprehensive performance of the traditional film is solved, and the application range is expanded.

Inventors

ZHAO HAIRONG

Assignees

东莞市匠星新材料科技有限公司

Dates

Publication Date: 20260505
Application Date: 20250314

Claims (5)

1. The ultraviolet-proof film comprises an outermost layer (1) and is characterized in that the outermost layer (1) is a structural layer formed by compounding polytetrafluoroethylene and nano silicon dioxide, an ultraviolet-proof layer (2) is arranged on the inner side of the outermost layer (1), a gas barrier layer (3) is arranged on the inner side of the ultraviolet-proof layer (2), an electric conduction and heat conduction layer (4) is arranged on the inner side of the gas barrier layer (3), and an adhesion affinity layer (5) is arranged on the inner side of the electric conduction and heat conduction layer (4).
2. The ultraviolet-shielding film according to claim 1, wherein the ultraviolet-shielding layer (2) is a composite structure layer composed of a polyester to which a hindered amine light stabilizer is added.
3. The ultraviolet-proof film as claimed in claim 1, wherein the gas barrier layer (3) is a structural layer made of ethylene-vinyl alcohol copolymer.
4. The ultraviolet-proof film according to claim 1, wherein the electric and heat conductive layer (4) is a structural layer made of polyimide filled with graphene.
5. The ultraviolet-proof film as claimed in claim 1, wherein the adhesion affinity layer (5) is a structure formed by taking maleic anhydride grafted polyethylene as a raw material.

Description

Ultraviolet-proof film Technical Field The utility model relates to the technical field of ultraviolet films, in particular to an ultraviolet-proof film. Background In many fields today, the protective properties of materials are increasingly demanding, and films are a widely used form of materials, which face many challenges. The traditional single-layer film has serious limitations in aspects of ultraviolet resistance, gas blocking, electric conduction, heat conduction, bonding stability and the like. In the uv protection field, early films relied on simple uv absorbers to be added to a general purpose polymer matrix. However, films prepared in this way are prone to volatilization and decomposition of the absorber after prolonged exposure to uv radiation, resulting in rapid attenuation of the uv blocking effect and failure to provide durable and reliable protection to the underlying material. For example, in application scenes such as outdoor building films, agricultural greenhouse films and the like, after a period of use, problems such as accelerated aging of building interior decorations, damage to crops by ultraviolet rays, yield reduction and the like frequently occur due to failure of ultraviolet ray blocking. For gas barrier, a film of polyethylene, polypropylene or the like is generally known to have a certain physical barrier property, but has extremely low barrier efficiency against gases such as oxygen, carbon dioxide or the like. Like the food packaging industry, the common film is difficult to prevent oxygen permeation, so that the food is oxidized and deteriorated and the flavor is lost, and the shelf life of the food is shortened. While the traditional polyvinylidene chloride (PVDC) gas barrier layer has good barrier effect, has hidden environmental protection trouble, and is limited in some areas or application scenes with high requirements on environmental protection. With the development of miniaturization and high performance of electronic equipment, the requirements on the electric conduction and heat conduction properties of the thin film are increasingly prominent. In the past, the electric conduction and heat conduction requirements are met by adopting a metal foil or a simple metal filling polymer mode. The metal foil has poor flexibility, is easy to damage, is difficult to adapt to the lamination of complex shapes, and the metal filled polymer has the problems of metal oxidation, particle aggregation and the like, so that the electric conduction and heat conduction performance is unstable, the heat dissipation and electromagnetic shielding effects of the electronic element are affected, and the expansion application of the film in the electronic field is restricted. In the bonding aspect of the film and the packaged objects or other materials, the traditional glue bonding mode is easy to lose efficacy under severe environments such as high temperature, high humidity and the like, so that the film falls off. Some simple bonding layer materials cannot achieve compatibility with materials with different properties, so that the application range of the film is limited, for example, the requirements on bonding stability and affinity are extremely high in the fields of medical packaging, precise instrument packaging and the like, and the traditional bonding mode is difficult to meet. In view of the above, the existing film technology is difficult to meet the high standard requirements of multiple fields on comprehensive performances such as ultraviolet resistance, gas barrier, electric conduction, heat conduction, adhesion and the like, and a brand new multifunctional protective film needs to be developed, so that the ultraviolet-proof film of the utility model is generated. Disclosure of utility model (One) solving the technical problems Aiming at the defects of the prior art, the utility model provides an ultraviolet-proof film, which solves the problems in the background art. (II) technical scheme The utility model adopts the following technical scheme for realizing the purposes: The ultraviolet-proof film comprises an outermost layer, wherein the outermost layer is a structural layer formed by compounding polytetrafluoroethylene and nano silicon dioxide, an ultraviolet-proof layer is arranged on the inner side of the outermost layer, a gas barrier layer is arranged on the inner side of the ultraviolet-proof layer, an electric conduction and heat conduction layer is arranged on the inner side of the gas barrier layer, and an adhesion affinity layer is arranged on the inner side of the electric conduction and heat conduction layer. Further, the ultraviolet-proof layer is a composite structural layer composed of a polyester to which a hindered amine light stabilizer is added. Further, the gas barrier layer is a structural layer formed by ethylene-vinyl alcohol copolymer. Further, the electrically and thermally conductive layer uses a structural layer composed of polyimide filled with g