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PTFE coating material with high water vapor barrier property and preparation method thereof

A water vapor barrier and coating technology, applied in the direction of coating, can solve problems such as cracking, and achieve the effects of strong water vapor barrier, excellent adhesion and low production cost

Inactive Publication Date: 2015-02-18
WUXI SUNOCEAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water vapor will attack the underlying PET film through the base resin in the coating and the small cracks in the coating, so that the PET will be degraded and cracked quickly, and this type of backsheet will crack severely during strong humidity and heat aging

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The high water vapor barrier PTFE coating of this embodiment is prepared from the following raw materials in parts by weight: 80 parts of PTFE, 10 parts of butyl methacrylate, 4 parts of dodecafluoroheptyl acrylate, 5 parts of biuret, methacrylate hydroxyl 13 parts of ethyl ester, 5 parts of cumene hydroperoxide, 3 parts of dibutyltin dilaurate, 7 parts of acrylate, 3 parts of leveling agent, 3 parts of dipropylene glycol methyl ether, 2 parts of KH560, polydimethyl 4 parts of siloxane, 2 parts of poly-3-methylthiophene.

[0018] The alkenoic acid is acrylic acid.

[0019] The said leveling agent is propylene glycol methyl ether acetate.

[0020] The high water vapor barrier PTFE coating of this embodiment includes the following steps: weighing each raw material according to the weight ratio, adding it to the reaction kettle, opening the reaction kettle and stirring at 88°C for 2.5 hours, then cooling to room temperature and discharging, the obtained product .

Embodiment 2

[0022] The high water vapor barrier PTFE coating of this embodiment is prepared from the following raw materials in parts by weight: 85 parts of PTFE, 14 parts of butyl methacrylate, 8 parts of dodecafluoroheptyl acrylate, 9 parts of biuret, hydroxymethacrylate 17 parts of ethyl ester, 9 parts of cumene hydroperoxide, 6 parts of dibutyltin dilaurate, 11 parts of acrylate, 6 parts of leveling agent, 8 parts of dipropylene glycol methyl ether, 5 parts of KH560, polydimethyl 8 parts of siloxane, 4 parts of poly-3-methylthiophene.

[0023]The alkenoic acid is methacrylic acid.

[0024] The said leveling agent is propylene glycol methyl ether acetate.

[0025] The high water vapor barrier PTFE coating of this embodiment includes the following steps: weighing each raw material according to the weight ratio, adding it to the reaction kettle, opening the reaction kettle and stirring at 88 ° C for 3 hours, then cooling to room temperature and discharging, the obtained product .

Embodiment 3

[0027] The high water vapor barrier PTFE coating of this embodiment is prepared from the following raw materials in parts by weight: 82 parts of PTFE, 12 parts of butyl methacrylate, 5 parts of dodecafluoroheptyl acrylate, 6 parts of biuret, hydroxymethacrylate 14 parts of ethyl ester, 6 parts of cumene hydroperoxide, 4 parts of dibutyltin dilaurate, 8 parts of acrylate, 4 parts of leveling agent, 4 parts of dipropylene glycol methyl ether, 3 parts of KH560, polydimethyl 5 parts of siloxane, 3 parts of poly-3-methylthiophene.

[0028] The enoic acid is undecylenic acid.

[0029] The said leveling agent is propylene glycol methyl ether acetate.

[0030] The high water vapor barrier PTFE coating of this embodiment comprises the following steps: weighing each raw material according to the weight ratio, adding it to the reaction kettle, opening the reaction kettle and stirring at 80°C for 2.5 hours, then cooling to room temperature and discharging, the obtained product .

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PUM

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Abstract

The invention discloses a PTFE coating material with high water vapor barrier property and a preparation method thereof. The coating material is prepared from the following raw materials in parts by weight: 80-85 parts of PTFE, 10-14 parts of butyl methacrylate, 4-8 parts of dodecafluoroheptyl acrylate, 5-9 parts of biuret, 13-17 parts of hydroxyethyl methacrylate, 5-9 parts of cumene hydroperoxide, 3-6 parts of tin dibutyl dilaurate, 7-11 parts of gadoleic acid, 3-6 parts of leveling agent, 3-8 parts of dipropylene glycol methylether, 2-5 parts of KH560, 4-8 parts of polydimethylsiloxane and 2-4 parts of poly-3-methylthiophene. The coating material disclosed by the invention has the characteristics of good weather resistance, strong water vapor barrier property and high adhesion and can form excellent adaptation to a sealing material, particularly EVA, in a solar cell assembly. The coating material is simple in production process, low in production cost, easy in transportation and storage and easy in industrial production and is environment-friendly, thereby having a market application value.

Description

technical field [0001] The invention relates to a high water vapor barrier PTFE coating and a preparation method thereof. Background technique [0002] With the gradual reduction of non-renewable resources and various pollution problems caused by the production and use of mineral resources, countries are using policy and legal means to gradually increase the development and utilization of renewable energy and clean energy, and strive to improve Its share of total energy use. Among these clean and renewable energy sources, solar energy is one of the most important energy sources. Solar photovoltaic power generation is increasingly becoming a part of our lives. The national 12th Five-Year Plan sets the total installed capacity at 15GW in 2015, which indicates that part of our daily electricity consumption will quietly become from solar energy generation. For the photovoltaic power generation industry, it is necessary to reduce costs while continuously improving technology. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/18C09D7/12
CPCC09D4/06C09D7/47C09D7/65C08F259/08
Inventor 黄新东刘天人
Owner WUXI SUNOCEAN
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