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High fracture toughness paint surface protection film and applications thereof

A protective film and high-fracture technology, applied in the direction of pressure-sensitive film/sheet, polymer adhesive additive, film/sheet-shaped adhesive, etc., can solve the problem of easy residual glue and achieve high light transmittance and UV absorption rate, convenient for industrial production, and easy to clean up

Inactive Publication Date: 2019-10-22
NINGBO EXCITON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the current paint protection film is prone to residual glue in the process of peeling off the car body after use, the present invention provides a paint protection film with high fracture toughness

Method used

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  • High fracture toughness paint surface protection film and applications thereof
  • High fracture toughness paint surface protection film and applications thereof
  • High fracture toughness paint surface protection film and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0072] A kind of preparation method of the paint protective film of high fracture toughness provided by the invention comprises the following steps:

[0073] a. Accurately weigh and add to the organic solvent according to the parts by weight of each component of the pressure-sensitive adhesive layer, and stir evenly to obtain the pressure-sensitive adhesive glue coating liquid;

[0074] b. Apply thermosetting self-repairing glue evenly on the upper surface of the substrate layer, and then bake in an oven at a temperature of 40-125°C. The thermosetting self-repairing glue forms self-repairing on the upper surface of the substrate layer layer to obtain a semi-finished paint protection film;

[0075] c. Coating the pressure-sensitive adhesive glue coating solution on the lower surface of the base material layer of the semi-finished product, and then entering the oven to bake at a temperature of 60-150°C. A pressure-sensitive adhesive layer is formed on the lower surface, and the...

Embodiment 1

[0086] The invention provides a paint protection film with high fracture toughness. The paint protection film with high fracture toughness comprises a self-repairing layer, a base material layer and a pressure-sensitive adhesive layer; wherein one side of the base material layer is provided with the As for the self-healing layer, the other side of the substrate layer is provided with the pressure-sensitive adhesive layer.

[0087]The raw material of the pressure-sensitive adhesive layer is composed of the following materials: epoxy resin: 60 parts by weight; anhydride curing agent: 22 parts by weight; tackifying resin: 12 parts by weight; Qishi toughener: 4 parts by weight; Accelerator: 1 weight part; Antioxidant: 0.5 weight part;: Ultraviolet absorber 0.5 weight part; Wherein epoxy resin is bisphenol F type epoxy resin; Anhydride curing agent is dodecyl succinic anhydride; The toughening agent is QS-N; the epoxy accelerator is triethanolamine; the tackifying resin is polyisob...

Embodiment 2

[0094] The raw material of the pressure-sensitive adhesive layer of the paint protection film with high fracture toughness as described in Example 1 is made up of following materials: epoxy resin: 35 parts by weight; Anhydride curing agent: 10 parts by weight; Tackifying resin: 28 parts by weight Parts; Qishi toughening agent: 13 parts by weight; Epoxy accelerator: 10 parts by weight; Antioxidant: 1.0 parts by weight; Ultraviolet absorber: 3.0 parts by weight; Wherein the epoxy resin is a resorcinol type epoxy resin; Anhydride curing agent is tetrahydrophthalic anhydride; Qishi toughening agent is QS-VE; epoxy accelerator is: DMP-30; tackifying resin is terpene-phenol resin; antioxidant is phosphite; The absorber is formamidine UV absorber. Wherein, the equivalent ratio of the epoxy group of the epoxy resin and the anhydride group of the anhydride curing agent in the raw material of the pressure-sensitive adhesive layer is 1.30.

[0095] Wherein, the organic solvent in the pr...

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Abstract

The present invention relates to the field of functional films, more particularly to a high fracture toughness paint surface protection film and applications thereof. In the prior art, after the current paint surface protection film is used, the residual glue is difficult to clean during the peeling off of the paint surface protection film from the vehicle body. In order to solve the problem in the prior art, the present invention provides a high fracture toughness paint surface protection film, which comprises a self-repairing layer, a base material layer and a pressure-sensitive adhesive layer, wherein the raw materials of the pressure-sensitive adhesive layer comprise, by weight, 34-60 parts of an epoxy resin, 10-32 parts of an anhydride curing agent, 9-28 parts of a tackifying resin, 4-24 parts of a Qishi toughening agent, 1-10 parts of an epoxy accelerator, 0.5-2 parts of an antioxidant, and 0.5-3 parts of an ultraviolet ray absorber. According to the present invention, the prepared high fracture toughness paint surface protection film has excellent performances of high light transmittance, high ultraviolet ray absorbing rate, high holding adhesive power, high fracture toughness and the like; and the preparation method has characteristics of simple preparation process and easy operation, and is convenient for industrial production.

Description

technical field [0001] The invention relates to the field of functional films, in particular to a paint protective film with high fracture toughness and its application. Background technique [0002] With the development of economy, China has become the world's largest automobile consumer. More and more cars have entered thousands of households. Simultaneously rising with the automobile consumer market is the automobile maintenance market. [0003] Paint Protective Film (PPF for short), also known as "invisible car cover", is a layer of transparent protective film attached to the surface of the car body. Its main function is to protect the original car paint of the car from damage. This product not only has strong toughness, but also has a self-repair function, which can effectively prevent scratches and sand hits, and also isolates the contact between the car paint and the air, and can prevent acid rain, asphalt, bird droppings, etc. from damaging the paint surface. harm...

Claims

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Application Information

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IPC IPC(8): C09J7/24C09J7/38C09J163/00C09J11/08C09J11/06
CPCC09J11/06C09J11/08C09J163/00C09J2203/306C09J2427/006C09J2463/00C09J2475/00C09J7/245C09J7/38C09J2301/302C08L23/22C08K5/3475C08K5/13
Inventor 唐海江任远飞薛永富徐升杨科彦李旭李刚张彦
Owner NINGBO EXCITON TECH
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