CN214226926U

CN214226926U - High-temperature cross-linked gap reflective film

Info

Publication number: CN214226926U
Application number: CN202120475939.9U
Authority: CN
Inventors: 高瑞; 丁培兴; 刘浩
Original assignee: Suzhou Golden Star Electronic Technology Co ltd
Current assignee: Suzhou Golden Star Electronic Technology Co ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-09-17
Anticipated expiration: 2031-03-05

Abstract

The high-temperature cross-linking type gap reflective film designed by the utility model is pasted on a back plate or a back glass to generate high-temperature cross-linking reaction in the laminating process, so as to enhance the adhesive force and reliability with the back plate or the glass, the high-temperature cross-linking reflective film selects the ultraviolet-resistant and hydrolysis-resistant PET material as the base material of the product, the good mechanical property of the product can meet the tension interference in the processing, production and use processes, the good ultraviolet resistance and hydrolysis resistance can meet the requirement of aging performance, the selected cross-linking agent eva has good stability and a large process window, the cross-linking reaction does not occur in the production process through the design of the production process, the product has excellent adhesive property and aging property due to cross-linking reaction in the using process, and the ultraviolet aging property is multiplied, so that the yellowing index of the product is less than or equal to 2 under the ultraviolet aging of 200 kwh.

Description

High-temperature cross-linked gap reflective film

Technical Field

The utility model relates to a photovoltaic module production field especially relates to a high temperature cross-linking type clearance reflectance coating.

Background

Solar energy is inexhaustible clean energy, and based on the low cost and high efficiency, solar photovoltaic power generation has important significance for solving the energy crisis and the environmental problem of human beings, governments of various countries continuously increase the support force for developing the solar photovoltaic technology and industry from the aspects of policy, investment and the like, China also sets a series of development plans for encouraging the photovoltaic industry, and a series of development plans set by the country can promote the rapid development of the solar photovoltaic technology and industry, thereby being beneficial to the popularization and application of the solar photovoltaic power generation.

With the continuous development of the photovoltaic industry, reducing the system and electricity consumption cost becomes an important target of the whole industry. Therefore how to improve module power and conversion efficiency becomes the research focus in order to each big photovoltaic manufacturer, in order to cooperate and promote module power, carry out the subject development and research and development, utilize the power gain principle of welding the area reflectance coating, make a section attached in the subassembly piece clearance, cluster the reflectance coating between the clearance, promote module power, because this kind of reflectance coating need paste on backplate or back of the body glass, need have stronger adhesive property, high temperature resistant, resistant ultraviolet and reliable performance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high temperature cross-linking type clearance reflectance coating.

For realizing above-mentioned technical purpose, the utility model discloses a following technical scheme, a high temperature cross-linking type clearance reflectance coating, high temperature cross-linking type clearance reflectance coating uses the anti-hydrolysis PET polyester film of ultraviolet ray as the substrate, PET polyester film's thickness control is 38um 2um, PET polyester film's upper surface is anti ultraviolet UV adhesive structure layer, structure layer thickness control is 12um 2um, the upper surface of structure layer is the high reflection aluminium lamination, the thickness of aluminium lamination is 600A, PET polyester film's lower surface is for nai ultraviolet cross-linking type tie coat, the tie coat thickness is 70um 10 um.

Preferably, the reflectance of the highly reflective aluminum layer is 90% or more.

Preferably, the bonding layer is an ultraviolet-resistant crosslinking EVA hot melt adhesive layer, and the high-temperature crosslinking rate is more than or equal to 85%.

Preferably, the included angle between the reflecting structure in the structural layer and the edge of the structural layer is controlled to be 120 +/-5 degrees, and the sawtooth distance of the reflecting structure in the structural layer is controlled to be 25um +/-2 um.

The high-temperature cross-linking type gap reflective film developed by the utility model can be applied on a back plate or a back glass to generate high-temperature cross-linking reaction in the laminating process, the adhesive force and the reliability of the high-temperature cross-linking reflective film with the back plate or the glass are enhanced, the high-temperature cross-linking reflective film selects the anti-ultraviolet and hydrolysis-resistant PET material as the base material of the product, the good mechanical property of the high-temperature cross-linking reflective film can meet the tension interference in the processing, production and use processes, the good anti-ultraviolet and hydrolysis-resistant properties of the high-temperature cross-linking reflective film can meet the requirement of aging property, the selected cross-linking agent eva has good stability and large process window, the cross-linking reaction does not occur in the production process through the design of the production process, the cross-linking reaction occurs in the use process of the product, the high-bonding property and the aging property are realized, the ultraviolet aging property is multiplied, the ultraviolet aging property is realized, the yellowing index is less than or equal to 2 under the ultraviolet aging of 200kwh, in addition, the included angle control at 120 +/-5 of structural layer internal reflection structure and structural layer edge, structural layer internal reflection structure's sawtooth interval control is at 25um +/-2 um, combines the aluminium lamination that the reflectivity exceeds 90%, utilization sunlight that can be better, improvement generating efficiency.

Drawings

Fig. 1 is a schematic view of the present invention.

In the figure: 1. a PET film; 2. an external hot melt adhesive layer; 3. an inner hot melt adhesive layer; 4. a fluorine-containing film.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be understood that the terms "mounted," "connected," and "connected" are used in a broad sense and can be, for example, mechanically or electrically connected, or can be connected by two elements through internal communication, either directly or indirectly via an intermediate medium. The specific meaning of the above terms can be understood by those of ordinary skill in the art as appropriate.

The utility model provides a high temperature crosslinking type clearance reflectance coating, high temperature crosslinking type clearance reflectance coating uses the resistant hydrolysis-resistant PET polyester film 1 of ultraviolet ray as the substrate, PET polyester film 1's thickness control is at 38um 2um, PET polyester film 1's upper surface is anti ultraviolet UV glue structural layer 2, structural layer 2 thickness control is at 12um 2um, structural layer 2's upper surface is high reflection aluminium layer 3, the thickness of aluminium layer 3 is 600A, PET polyester film 1's lower surface is resistant ultraviolet crosslinking type tie coat 4, tie coat 4 thickness is 70um 10 um.

Preferably, the reflectance of the highly reflective aluminum layer 3 is 90% or more.

Preferably, the bonding layer 4 is an ultraviolet-resistant crosslinking EVA hot melt adhesive layer, and the high-temperature crosslinking rate is more than or equal to 85%.

Preferably, the included angle between the internal reflection structure of the structural layer 2 and the edge of the structural layer is controlled to be 120 +/-5 degrees, and the sawtooth distance of the internal reflection structure of the structural layer 2 is controlled to be 25um +/-2 um.

The high-temperature cross-linking type gap reflective film developed by the utility model can be applied on a back plate or a back glass to generate high-temperature cross-linking reaction in the laminating process, the adhesive force and the reliability of the high-temperature cross-linking reflective film with the back plate or the glass are enhanced, the high-temperature cross-linking reflective film selects the anti-ultraviolet and hydrolysis-resistant PET material as the base material of the product, the good mechanical property of the high-temperature cross-linking reflective film can meet the tension interference in the processing, production and use processes, the good anti-ultraviolet and hydrolysis-resistant properties of the high-temperature cross-linking reflective film can meet the requirement of aging property, the selected cross-linking agent eva has good stability and large process window, the cross-linking reaction does not occur in the production process through the design of the production process, the cross-linking reaction occurs in the use process of the product, the high-bonding property and the aging property are realized, the ultraviolet aging property is multiplied, the ultraviolet aging property is, the included angle control at 120 +/-5 of structural layer internal reflection structure and structural layer edge, structural layer internal reflection structure's sawtooth interval control is at 25um +/-2 um, combines the aluminium lamination that the reflectivity exceeds 90%, utilization sunlight that can be better, improvement generating efficiency.

In the description herein, references to the description of "one embodiment," "an example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a high temperature crosslinking type clearance reflectance coating, a serial communication port, high temperature crosslinking type clearance reflectance coating uses the hydrolysis resistant PET polyester film of resistant ultraviolet as the substrate, PET polyester film's thickness control is at 38um 2um, PET polyester film's upper surface is anti ultraviolet UV and glues the structural layer, structural layer thickness control is at 12um 2um, the upper surface of structural layer is the high reflection aluminium layer, the thickness of aluminium layer is 600A, PET polyester film's lower surface is for nai ultraviolet crosslinking type tie coat, the tie coat thickness is 70um 10 um.

2. The high-temperature cross-linking type gap reflective film according to claim 1, wherein the reflectance of the high-reflective aluminum layer is not less than 90%.

3. The high-temperature crosslinking type gap reflection film according to claim 1, wherein the adhesive layer is an ultraviolet-resistant crosslinking type EVA hot-melt adhesive layer, and the high-temperature crosslinking rate is not less than 85%.

4. The high-temperature cross-linking type gap reflection film according to claim 1, wherein the included angle between the reflection structure in the structure layer and the edge of the structure layer is controlled to be 120 ° ± 5 °, and the sawtooth pitch of the reflection structure in the structure layer is controlled to be 25um ± 2 um.