High-transmittance high-definition polyester film and preparation method thereof

Abstract

The invention provides a high-transmittance high-definition polyester film and a preparation method thereof, and relates to the technical field of polyester films, the high-transmittance high-definition polyester film comprises an outer layer, a core layer and an inner layer, the core layer comprises the following components by weight: 90-95 parts of polyethylene glycol terephthalate, 10-18 parts of a flexibilizer, and 1-3 parts of inorganic particles. The ultraviolet light absorber added in the outer layer has the effect of absorbing ultraviolet light, so that the ultraviolet light can be effectively absorbed when the film is applied to the fields of automobile films and the like, the ultraviolet light is prevented from hurting a user, static electricity can be effectively prevented through the antistatic agent added in the inner layer, and the anti-static effect is good. The flame retardant can well improve the ignition point and the fire-resistant effect of the cable, so that the safety is improved, the service life of the cable is prolonged, and the core layer can improve the strength and prolong the service life of the cable through the added inorganic particles.

Description

technical field [0001] The invention relates to the technical field of polyester films, in particular to a polyester film with high light transmission and high definition and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) has good fiber-forming properties, mechanical properties, wear resistance, creep resistance and electrical insulation, and has a wide range of applications in the fields of fibers, films, polyester bottles, engineering plastics, etc. Applications. [0003] Chinese Patent No. CN102634064A discloses a phosphorus-containing flame retardant, a flame-retardant polyester film and a preparation method thereof. The flame retardant has the following general structural formula: wherein, the flame retardant contains an oxazoline structure, and R1 is the next Alkyl group, the number of C atoms is 2-6. Although this kind of polyester film has excellent flame retardant properties, and has the advantages of high mechanical pr...

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Problems solved by technology

[0003] Chinese Patent No. CN102634064A discloses a phosphorus-containing flame retardant, a flame-retardant polyester film and a preparation method thereof. The flame retardant has the following general structural formula: wherein, the flame retardant contains an oxazoline structure, and R1 is the next Alkyl group, the number of C atoms is 2-6. Although this kind of polyester film has excellent flame retardant properties, and has the advantages of high mechanical properties and thermal stability, it has the problems of poor light transmission and low clarity. , which affects the actual use and needs to be improved

[0004] Chinese Patent No. CN109054314A discloses a high-transparency polyester film and a preparation method thereof, including a core layer and a surface layer arranged on one or both sides of the core layer, and the surface layer includes polyethylene terephthalate 93- 97%, 0.08-0.25% of inorganic particles, 2.75-6.92% of other additives; said percentage is mass percentage; said inorganic particles are coated and modified by compatibilizer. Adding inorganic particles coated with a compatibilizer to the surface layer improves the binding ability of the inorganic particles to polyethylene terephthalate in the surface layer of the polyester film and reduces the amount of polyester after biaxial stretching. There are gaps around the inorganic particles in the film, but there is a problem of poor UV protection performance, so when it is applied to the field of car film, the protection effect is poor, and it is easy to sunburn the driver, so it needs to be improved

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