A kind of extruded back sheet for photovoltaic cells and preparation method thereof

A photovoltaic cell, extrusion technology, applied in chemical instruments and methods, applications, circuits, etc., can solve the problem of no flame retardancy, and achieve the effect of improving flame retardancy, suitable for popularization and application, and good flame retardancy

Active Publication Date: 2018-07-03
SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no description about flame retardancy

Method used

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  • A kind of extruded back sheet for photovoltaic cells and preparation method thereof

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Effect test

Embodiment 1

[0035] An extruded back sheet for photovoltaic cells, the preparation method of which is as follows:

[0036] (1) Surface treatment of the filler: weigh a certain amount of silane coupling agent KH550 (1% of the glass fiber mass), add a small amount of ethanol aqueous solution; weigh the glass fiber and place it in a high-speed mixer, and heat up while stirring at a high speed To 60°C, add the coupling agent solution drop by drop; after the dropwise addition, continue to mix at high speed for 20 minutes; after the mixing is completed, take out the treated glass fiber, dry it in a blast drying oven at 120°C for 1 hour, and set aside;

[0037] (2) Preparation of nano-flame retardant: add ethanol to the container, heat it to 60°C, then add water and a certain amount of cage polysilsesquioxane, water and cage polysilsesquioxane successively under stirring The molar ratio of siloxane is 3:1; after stirring and dispersing for 1min, add nano-aluminum hydroxide and continue stirring a...

Embodiment 2

[0044] An extruded flame-retardant backboard, the preparation method of which is as follows:

[0045] (1) Surface treatment of filler: weigh a certain amount of silane coupling agent KH550 (1% of the carbon fiber mass), add a small amount of ethanol aqueous solution; weigh the carbon fiber and place it in a high-speed mixer, and heat up to 60°C while stirring at a high speed ℃, add the coupling agent solution drop by drop; after the dropwise addition, continue to mix at high speed for 20 minutes; after the mixing is completed, take out the treated carbon fiber, dry it in a blast drying oven at 120℃ for 1 hour, and set aside;

[0046] (2) Preparation of nano-flame retardant: add ethanol to the container, heat it to 60°C, then add water and a certain amount of cage polysilsesquioxane, water and cage polysilsesquioxane successively under stirring The molar ratio of siloxane is 3:1; after stirring and dispersing for 1min, add nano-magnesium hydroxide and continue stirring at 60°C ...

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Abstract

The invention discloses an extruded backsheet for photovoltaic cells, which comprises an upper surface layer, a core layer and a lower surface layer; wherein, the upper surface layer is composed of polyamide resin, fillers, flame retardants, and additives; the core layer is composed of Composed of polypropylene resin and grafted polyethylene modified polyamide resin, filler, flame retardant and additive; the lower surface layer is composed of polyamide resin, flame retardant, coupling agent and additive; the flame retardant is made of surface-treated Composed of nano-scale inorganic flame retardant and red phosphorus; nano-scale inorganic flame retardant is selected from 10~100nm aluminum hydroxide and / or magnesium hydroxide; the surface treatment agent used is 1~5nm vinyl cage polyfold semisiloxane. The flame retardant effect of the extruded backboard of the present invention is good, and reaches A grade after the combustion test; it can also ensure that the flame retardant has no effect on the mechanical properties, aging resistance, water resistance, and insulation properties of the extruded backboard. influences.

Description

technical field [0001] The invention relates to an extruded back sheet for photovoltaic cells and a preparation method thereof. Background technique [0002] With the depletion of non-renewable energy sources and increasingly serious environmental problems, solar energy, as a clean energy source, has received unprecedented attention and attention. Solar power generation (also known as photovoltaic power generation) is one of the main ways to effectively utilize solar energy, and as the core component of solar power generation, the reliability of solar cell components directly determines the efficiency of solar power generation. [0003] Photovoltaic modules are mainly composed of low-iron tempered glass, thermoplastic encapsulation film, cell strings, thermoplastic encapsulation film, and backplane, which are laminated and packaged in five layers. In actual use, components may catch fire due to defects in component materials, system design defects, and hot spot effects, cau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/00C08L23/12C08L51/06C08K13/06C08K9/06C08K7/14C08K7/06C08K3/22C08K5/134C08K5/132C08K5/5399C08K3/02C08K5/544C08K5/526B32B27/08B32B27/18B32B27/20B32B27/32B32B27/34H01L31/049H01L31/18B29C47/06
CPCB29C48/18B32B27/08B32B27/18B32B27/20B32B27/32B32B27/34B32B2250/24B32B2262/101B32B2262/106B32B2264/10B32B2264/102B32B2264/104B32B2270/00B32B2307/206B32B2307/3065B32B2307/552B32B2307/7265B32B2457/12C08K3/02C08K3/22C08K5/132C08K5/1345C08K5/526C08K5/5399C08K5/544C08K7/06C08K7/14C08K9/06C08K13/06C08K2003/026C08K2003/2224C08K2003/2227C08K2003/2241C08L23/12C08L2201/02C08L2203/20C08L2205/03H01L31/18C08L77/00C08L51/06Y02P70/50
Inventor 罗吉江符书臻
Owner SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD
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