CN211896767U

CN211896767U - Self-repairing type external window film

Info

Publication number: CN211896767U
Application number: CN201921562607.3U
Authority: CN
Inventors: 施庆元; 尹峰; 王少明; 陈佳伟
Original assignee: Guangdong Xinrui New Material Technology Co ltd
Current assignee: Guangdong Xinrui New Material Technology Co ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-11-10
Anticipated expiration: 2029-09-19

Abstract

The utility model discloses an outer window membrane of self-repairing type, including thermosetting polyurethane selfreparing scratch-resistant layer, first polyester film layer, composite bed, second polyester film layer and the installation layer that connects gradually, first polyester film layer is the polyester film who does not pass through surface modification or preliminary treatment. Outer window membrane of self-repairing type have excellent weatherability and mar self-repairing nature, and use ordinary polyester film not surface modification or preliminary treatment can realize that the selfreparing is prevented scraping the strong adhesive force of layer to polyester film layer, preparation the outer window membrane raw materials of self-repairing type are easy, and customization is convenient, and preparation technology is simple and convenient.

Description

Self-repairing type external window film

Technical Field

The utility model relates to a building window membrane technical field, more specifically relates to a self-repairing type outer window membrane that pastes.

Background

The window film is an energy-saving and environment-friendly product, has wide market development prospect due to no pollution and convenient installation, is mostly applied to automobile windows and building windows, and has the characteristics of ultraviolet resistance, heat insulation, energy conservation, privacy, attractiveness, safety, explosion prevention and the like. The external window film is mainly applied to places such as building ceilings, ceilings and the like which are difficult to construct from the inside of a building, and the application method is to attach the external window film to one side of building glass close to the outside. Because most of the parts are designed for lighting, the parts are in the environment of direct sunlight or long-term irradiation, the scratch resistance is required to be good, and the parts also have excellent weather resistance, otherwise, after the window film product is used for a long time, the coating is easy to have aging phenomena such as yellowing, peeling, cracks, flowering and the like, the appearance of the glass is seriously influenced, and the visual effect is poor. The existing method for improving the weather resistance of the external window film is to add an ultraviolet absorbent into the polyester film, and the method can better protect the ultraviolet-proof polyester film and other film layers, but still has the following problems: firstly, a polyester film is required, a common scratch-resistant layer is made of UV (ultraviolet) light-cured resin, in order to enhance the adhesive force between the polyester film and the common scratch-resistant adhesive layer, the surface of the polyester film needs to be chemically treated, the process for manufacturing the external window film is more complex, and the photo-oxidation has great influence on the base film, so that the photodegradation of the base film is easily caused, and the base film needs to be protected by adding materials such as an ultraviolet absorbent, hindered amine and the like, so that the raw material selection variety of the polyester film is few, the customization and subscription amount is large, and the cost is high; secondly, the common scratch-resistant layer is easy to yellow due to the photoinitiator; the common scratch-resistant layer has higher hardness, has poor adhesive force with the ultraviolet-proof polyester film, and is easy to embrittle and delaminate; fourthly, once the scratch appears, the recovery cannot be carried out.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming above-mentioned prior art's at least one not enough, provide an outer window membrane of self-repairing type, the outer window membrane of self-repairing type has high weatherability and mar self-repairing nature, and preparation the outer window membrane raw materials of self-repairing type are easy, and customization is convenient, and preparation technology is simple and convenient.

The utility model adopts the following technical scheme:

a self-repairing type outer window film comprises a thermosetting polyurethane self-repairing anti-scraping layer, a first polyester film layer, a composite layer, a second polyester film layer and a mounting layer which are sequentially connected, wherein the first polyester film layer is a polyester film which is not subjected to surface modification or pretreatment.

The utility model discloses use the layer of scraping is prevented in thermosetting polyurethane selfreparing as the layer of scraping, can be direct with polyester film, composite bed, polyester film and the installation layer complex of not surface modification or preliminary treatment obtain the outer window film of self-repairing type that scratch resistance is good, just the outer window film ageing resistance of self-repairing type is excellent. Ordinary anti-scraping layer generally is UV solidified's acrylate, and hardness is high but the adhesive force is poor, and simultaneously easy yellowing, and do not have the selfreparing ability, the utility model discloses use thermosetting polyurethane to prevent scraping the layer as the selfreparing, hardness is moderate, the adhesive force is excellent, embrittlement delaminating phenomenon can not appear, and have the selfreparing function, wherein thermosetting polyurethane selfreparing prevents scraping the layer and is that the curing mode is the thermocuring, can produce the adhesion to first polyester film layer in the curing process, thereby very strong with the adhesive force between the first polyester film layer, use ordinary polyester film (not surface modification or pretreatment) can realize that the selfreparing prevents scraping the strong adhesive force of layer to first polyester film layer, the adhesive force can reach 5B (ASTM D3359).

Because the polyester film is a hard material, the self-repairing function of the thermosetting polyurethane self-repairing scratch-resistant layer is greatly weakened, and if the thickness of the thermosetting polyurethane self-repairing scratch-resistant layer is too thin, the self-repairing effect of the scratch-resistant layer is not ideal. Therefore, the thickness of the thermosetting polyurethane self-repairing scratch-resistant layer is preferably 10-20 μm.

Thermosetting polyurethane selfreparing prevent scraping the layer can adopt commercially available polyurethane selfreparing glue on the market, also can self-control the selfreparing prevent scraping the layer. Preferably, the self-made self-repairing scratch-resistant layer comprises the following components:

polyurethane self-repairing glue (Sante SR 700): 100 parts of (A);

curing agent (trite G100W): 15-25 parts;

diluting auxiliary agent (one or more of toluene, ethyl acetate, butyl acetate, butanone, n-heptane and other solvents): 20-30 parts of a solvent;

ultraviolet absorbent (one or more of salicylate, Benzophenone (BP), hydroxyphenol Benzotriazole (BTZ), hydroxyphenol triazine (HPT) and the like are mixed): 3-8 parts.

Preferably, the composite layer is a polyurethane hard glue layer, the thickness of the composite layer is 1-5 mu m, and the weather resistance of the polyurethane hard glue is excellent. Further preferably, the polyurethane adhesive layer is also added with an ultraviolet absorber.

The composite layer can also be an acrylic pressure-sensitive adhesive layer with excellent weather resistance, and the thickness of the composite layer is 3-15 mu m.

Preferably, the mounting layer is an acrylic pressure-sensitive adhesive layer, and the thickness of the mounting layer is 5-30 μm. More preferably, the acrylic pressure sensitive adhesive is 9510H or 9510W of Ashland

Preferably, the first polyester film layer is a colorless transparent polyester film or an inorganic primary color film, and the thickness of the first polyester film layer is 12-188 micrometers. Different from the traditional external window film, the first polyester film layer does not need a high ultraviolet-isolation polyester film, only needs a common colorless transparent polyester film or an inorganic primary color film, does not need to particularly use a polyester film containing an ultraviolet absorbent, has easily obtained raw materials and convenient customization, and greatly reduces the customization difficulty and cost of the polyester film. More preferably, the thickness of the first polyester film layer is 12 to 50 μm.

In order to realize the diversification of product functions, the second polyester film layer needs to have good flexibility, and due to the further protection of the composite layer, the polyester film layer preferably uses a colorless transparent polyester film, an inorganic primary color film, an aluminum-plated film and a magnetic control film, and the thickness of the polyester film layer is 12-188 micrometers. More preferably, the thickness of the second polyester film layer is 12 to 50 μm.

Preferably, the self-repairing type external window film further comprises a release film connected with the thermosetting polyurethane self-repairing scratch-resistant layer and a release film connected with the mounting layer. Outer window membrane of selfreparing should use two from the type membrane, and the layer curing process of preventing scraping of the reason lies in thermosetting polyurethane selfreparing can produce the adhesion phenomenon to polyester film layer, so need to protect from the type membrane on the layer is prevented scraping by thermosetting polyurethane selfreparing, so can prevent when the rolling the adhesion of layer and installation layer is prevented scraping by the selfreparing, avoids the product outward appearance unusual. More preferably, the release film is Wan run C05T3 or Mitsubishi 7BLK, and the thickness is 23-150 μm. More preferably, the thickness of the release film is 23-36 μm.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an use thermosetting polyurethane selfreparing to prevent scraping the layer and obtained with ordinary polyester film layer, composite bed, the installation layer complex that scratch resistance is good, the outer window membrane of self-repairing type that weatherability is excellent, compare traditional outer window membrane, do not have special requirement to polyester film, both need not to carry out surface modification or preliminary treatment to polyester film, also need not to add any ultraviolet absorbent in polyester film, the raw materials is easily obtained, and the customization is convenient, reduces the polyester film customization degree of difficulty and cost greatly, and preparation process is also more simple and convenient, the outer window membrane of self-repairing type is through load 200g/cm²The fine copper brush can still carry out self-repairing after being scraped for 30 times by hot water or hot air at about 70 ℃.

Drawings

Fig. 1 is a schematic diagram of the structure of the self-repairing external window film of the present invention.

Description of the drawings: 1. a thermosetting polyurethane self-repairing scratch-resistant layer; 2. a first polyester film layer; 3. compounding layers; 4. a second polyester film layer; 5. mounting a layer; 6. and (4) a release film.

Detailed Description

The drawings of the present invention are for illustration purposes only and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example 1

As shown in fig. 1, the self-repairing type external window film comprises a release film 6, a thermosetting polyurethane self-repairing scratch-resistant layer 1, a first polyester film layer 2, a composite layer 3, a second polyester film layer 4, a mounting layer 5 and the release film 6 which are sequentially connected. The thickness of the thermosetting polyurethane self-repairing scratch-resistant layer 1 is 10-20 microns; the first polyester film layer 2 is a colorless transparent polyester film which is not subjected to surface modification or pretreatment, and the thickness of the first polyester film layer is 12-50 micrometers; the composite layer 3 is a polyurethane hard adhesive layer and is 1-5 um thick; the second polyester film layer 4 is also a colorless transparent polyester film, and the thickness is 12-50 mu m; the mounting layer 5 is an acrylic pressure-sensitive adhesive layer and has the thickness of 5-30 microns; the thickness of the release film 6 (7 BLK of Mitsubishi) is 23-36 μm.

The self-repairing type exterior window film was subjected to performance tests, test items, test methods, and test results shown in table 1.

TABLE 1

As can be seen from the data in table 1, the thermosetting polyurethane repair scratch-resistant layer in the self-repairing outer window film described in this embodiment has good adhesion to the first polyester layer, moderate hardness, and excellent aging resistance and self-repairing performance.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not limitations to the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The self-repairing type outer window film is characterized by comprising a thermosetting polyurethane self-repairing scratch-resistant layer (1), a first polyester film layer (2), a composite layer (3), a second polyester film layer (4) and a mounting layer (5) which are sequentially connected, wherein the first polyester film layer (2) is a polyester film which is not subjected to surface modification or pretreatment.

2. The self-repairing type exterior window film according to claim 1, wherein the thickness of the thermosetting polyurethane self-repairing scratch-resistant layer (1) is 10-20 μm.

3. The self-repairing outer window film according to claim 1, wherein the composite layer (3) is a polyurethane hard glue layer and has a thickness of 1-5 μm.

4. The self-repairing type exterior window film according to claim 1, wherein the composite layer (3) is an acrylic pressure sensitive adhesive layer having a thickness of 3 to 15 μm.

5. The self-repairing type exterior window film according to claim 1, wherein the mounting layer (5) is an acrylic pressure sensitive adhesive layer having a thickness of 5 to 30 μm.

6. The self-repairing exterior window film according to any one of claims 1 to 5, wherein the first mylar layer (2) is a colorless transparent mylar or an inorganic primary color film having a thickness of 12 to 188 μm.

7. The self-repairing outer window film according to any one of claims 1 to 5, wherein the second polyester film layer (4) is a colorless transparent polyester film, an inorganic primary color film, an aluminum-plated film or a magnetron film, and has a thickness of 12 to 188 μm.

8. The self-repairing outer window film according to any one of claims 1 to 5, further comprising a release film (6) connected to the thermosetting polyurethane self-repairing scratch-resistant layer (1) and a release film (6) connected to the mounting layer (5).