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Composite layer resistant to damp-heat aging as well as preparation method and application of composite layer

A composite layer and moisture-resistant technology, which is applied in chemical instruments and methods, applications, and other household appliances, can solve the problems of complicated and lengthy preparation procedures, complicated preparation processes, and complex functional layer structures of multi-layer laminated structures, and achieve superior durability. Humid heat aging performance, excellent tensile strength, and low implementation cost

Pending Publication Date: 2022-05-06
SUNMAN (ZHENJIANG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although these backplane structures have improved the overall performance to a certain extent, the functional layer structure used has become more and more complex, the preparation process is complicated, and the performance improvement effect is still limited.
[0003] For this reason, the applicant has proposed a prior patent application (notification number is CN211555907U), the backboard adopts a reinforced photovoltaic composite backplane with high-efficiency water vapor barrier performance, and the photovoltaic composite backplane adopts a single layer of continuous fiber reinforced thermoplastic polymer unidirectional tape structure or multi-layer laminated structure, although this structure has excellent barrier water permeability and mechanical load at the same time, the preparation process of single layer of unidirectional belt is complicated, and the preparation process of multi-layer laminated structure is complicated and lengthy, and the production efficiency is relatively low. Low

Method used

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  • Composite layer resistant to damp-heat aging as well as preparation method and application of composite layer
  • Composite layer resistant to damp-heat aging as well as preparation method and application of composite layer
  • Composite layer resistant to damp-heat aging as well as preparation method and application of composite layer

Examples

Experimental program
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Effect test

preparation example Construction

[0033] Preferably, this embodiment proposes a method for preparing a composite layer resistant to moisture and heat aging as described above. The dip-melt composite molding process includes at least the following steps:

[0034] S10), coating the thermoplastic polymer on the fiber fabric layer by film impregnation or powder impregnation or electrostatic fluidized bed impregnation to obtain a pre-impregnated composite layer; it should be noted that the film impregnation or powder impregnation or electrostatic fluidized bed impregnation involved in this application The fluidized bed impregnation method is a conventional impregnation process used in the field of composite materials. Specifically, film impregnation usually refers to heating the thermoplastic polymer to a molten state, and impregnating the fiber fabric layer in the molten thermoplastic polymer; powder impregnation It refers to coating the powdery thermoplastic polymer on the fiber fabric layer by spraying or brushin...

Embodiment 1

[0041] Example 1: see figure 1 and figure 2 As shown, a composite layer 10 resistant to moisture and heat aging includes a fiber fabric layer 11, and a first thermoplastic film layer 12 and a second thermoplastic film layer 13 compounded on the upper and lower surfaces of the fiber fabric layer 11, wherein each The thermoplastic film layers 12, 13 are combined on the upper and lower surfaces of the fiber fabric layer 11 by dipping and melting composite molding process, each thermoplastic film layer 12, 13 is made of polypropylene, and the fiber fabric layer 11 is made of glass fiber, in a twill shape.

[0042] During preparation, polypropylene is coated on the fiber fabric layer 11 by film impregnation to obtain a pre-impregnated composite layer; then the pre-impregnated composite layer is heated and pressurized by a rolling laminating machine at a heating temperature of 200-220°C, The pressing pressure is 0.1-0.25Mpa; the molten polypropylene is extruded on the fiber fabric...

Embodiment 2

[0045] Embodiment 2: The remaining technical solutions of this embodiment 2 are the same as those of embodiment 1, the difference is that in this embodiment 2, please refer to image 3 As shown, the surface of the composite layer 10 in Example 1 is corona treated, and then the outer surface of the second thermoplastic film layer 13 is further coated with a fluorocarbon weather-resistant coating 14 .

[0046] After testing, in the composite layer obtained in the present embodiment 2, the tensile strength is 200MPa, the shrinkage rate is 0%, and the tensile strength attenuation after PCT aging is 35%; the barrier water vapor permeability is 0.21g / (m 2 24h).

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Abstract

The invention discloses a damp-heat aging resistant composite layer and a preparation method and application thereof.The damp-heat aging resistant composite layer at least comprises a fiber fabric layer, a first thermal plastic film layer and a second thermal plastic film layer, the first thermal plastic film layer and the second thermal plastic film layer are compounded on the upper surface and the lower surface of the fiber fabric layer through a dipping melting composite forming technology, and each thermal plastic film layer is made of a thermoplastic polymer; the fiber fabric layer is formed by weaving continuous fibers; and moreover, the production efficiency is high, the implementation cost is low, and the cable is very suitable for large-scale production and application.

Description

technical field [0001] The invention relates to the technical field of photovoltaic encapsulation, in particular to a composite layer resistant to moisture and heat aging, and also relates to a preparation method and application of the composite layer. Background technique [0002] In order to meet the barrier water penetration performance and mechanical load required by the photovoltaic backside packaging structure, it is also necessary to meet basic waterproof and insulation properties. Based on comprehensive performance considerations and the status quo of existing technologies, most of the existing technologies use PET (abbreviation for Polyethylene terephthalate in English) substrates as the backsheet structure of photovoltaic modules. Although PET substrates have excellent mechanical properties, they are expensive and expensive. Not resistant to hydrolysis. Therefore, people still hope to improve this, and the technical scheme of multi-layer structure compounding has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00
CPCB32B5/02B32B5/26B32B33/00B32B38/08B32B37/00B32B37/06B32B37/10B32B38/0008B32B38/0012H01L31/0481H01L31/049B32B2037/243B32B2255/02B32B2255/26B32B2262/101B32B2262/106B32B2262/0269B32B2260/021B32B2260/046B32B2307/306B32B2307/552B32B2457/12
Inventor 于伶俊王伟力徐征阳施正荣练成荣
Owner SUNMAN (ZHENJIANG) CO LTD
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