Bi-component fluororesin coating and application thereof to photovoltaic module back plates

A two-component coating and photovoltaic module technology, applied in photovoltaic power generation, polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor peeling performance, unsatisfactory compatibility, affecting the storage stability of coatings, etc. The network structure is stable and firm, the surface is smooth without spots, and the surface is not sticky

Active Publication Date: 2017-06-13
SUZHOU YISHENG OPTICAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fluorocarbon two-component coating is added with polyester polyol and adhesion promoter, which can improve the adhesion between it and the substrate to a certain extent, but on the one hand, the compatibility of the whole system is not ideal, which affects the The storage stability of the coating; on the other hand, the added polyester polyol or adhesion promoter does not participate in the macromolecular network structure of the main fluororesin curing, resulting in poor aging resistance, especially the peeling performance after moisture and heat aging. good

Method used

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  • Bi-component fluororesin coating and application thereof to photovoltaic module back plates
  • Bi-component fluororesin coating and application thereof to photovoltaic module back plates
  • Bi-component fluororesin coating and application thereof to photovoltaic module back plates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment provides a kind of fluororesin two-component paint, and the raw materials and formulations used are shown in Table 1, wherein,

[0041] The fluororesin comes from Changxing Chemical Industry (China) Co., Ltd., and the brand name is 41011.

[0042] Polyurethane acrylate comes from Jiangsu Sanmu Chemical Co., Ltd., and the brand is 6205.

[0043] The silane coupling agent is vinyltrimethoxysilane.

[0044] The initiator is tert-butyl benzoyl peroxide.

[0045] The isocyanate curing agent is HDI trimer.

[0046] In this example, the preparation of component A: According to the formula, mix fluororesin, titanium dioxide, polyurethane acrylate, silane coupling agent, wetting and dispersing agent, defoamer, leveling agent, and diluent evenly, and grind to Particle fineness ≤10μm, as component A, for future use.

[0047] Preparation of component B: According to the formula, mix the isocyanate curing agent, initiator and drier evenly, and use it as component...

Embodiment 2

[0051] This embodiment provides a kind of fluororesin two-component paint, and the raw materials and formulations used are shown in Table 1, wherein,

[0052] The fluororesin comes from Daikin Fluororesin Company of Japan, the brand is GK570.

[0053] Polyurethane acrylate comes from Jiangsu Sanmu Chemical Co., Ltd., and the brand name is 6202.

[0054] The silane coupling agent is γ-methacryloxypropyltrimethoxysilane.

[0055] The initiator is azobisisobutyronitrile.

[0056] The isocyanate curing agent is IPDI.

[0057]In this example, the mass ratio of component A and component B for preparing the photovoltaic module backsheet is 5:1, and the others are the same as in Example 1.

Embodiment 3

[0059] This embodiment provides a kind of fluororesin two-component paint, and the raw materials and formulations used are shown in Table 1, wherein,

[0060] The fluororesin comes from Changxing Chemical Industry (China) Co., Ltd., the brand is 41018.

[0061] Polyurethane acrylate comes from Jiangsu Sanmu Chemical Co., Ltd., and the brand is 6205.

[0062] The silane coupling agent is a combination of vinyltriethoxysilane and vinyltris(β-methoxyethoxy)silane in a mass ratio of 1:1.

[0063] The initiator is azobisisobutyronitrile.

[0064] In this example, the mass ratio of component A and component B for preparing the photovoltaic module backsheet is 5:1, and the others are the same as in Example 1.

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Abstract

The invention relates to a bi-component fluororesin coating and application thereof to photovoltaic module back plates. The bi-component fluororesin coating comprises a component A and a component B, wherein the component A comprises, by weight, 40-60 parts of fluororesin, 20-35 parts of titanium dioxide, 15-30 parts of diluent, 3-6 parts of urethane acrylate, 0.5-2 parts of silane coupling agent, 0.5-2 parts of wetting dispersant, 0.1-0.5 part of defoaming agent and 0.1-0.5 part of flatting agent, and the component B comprises, by weight, 0.1-0.5 part of dryer, 0.1-0.5 part of initiator and 1-10 parts of isocyanate curing agent. The bi-component fluororesin coating has the advantages that a coating layer prepared from the bi-component fluororesin coating forms an interpenetrating polymer network structure after being cured, and is smooth in surface without marks and aftertack, high in solvent resistance and excellent in adhesive force, early peeling strength of the coating layer with EVA is more than 50 N/cm, peeling strength of the coating layer with the EVA is not less than 20 N/cm after 48 hours' PCT accelerated ageing, and all indexes of the coating layer meet or are superior to industry requirements of back plate coating layers.

Description

technical field [0001] The invention relates to a fluororesin two-component coating and its application on the back plate of a photovoltaic module. Background technique [0002] Photovoltaic modules (that is, solar cell modules) backsheets are mainly used for sealing, insulating, and waterproofing in solar cells. Since solar cells are directly exposed to the air, they are vulnerable to water vapor, acid gas, high and low temperature, and ultraviolet rays. , resulting in the failure of its photoelectric conversion performance, so the protective effect of the solar cell backsheet is very important, and the research is also very meaningful. The existing coatings for solar battery backplanes have poor adhesion, low coating hardness, easy scratches during use, poor thermal conductivity, low bonding force with EVA, and easy delamination due to aging. In order to improve coating adhesion, some people add adhesion promoters and polyester polyols in the coating formulation, as Chine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/12C09D127/18C09D175/14C09D7/12H01L31/049
CPCY02E10/50C09D127/12C08L2203/204C09D7/61C09D7/63C09D127/18H01L31/049C08L75/14C08K13/02C08K2003/2241C08K5/54C08K5/29C08K5/5425
Inventor 张洪吉居俊杰张敏
Owner SUZHOU YISHENG OPTICAL MATERIAL CO LTD
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