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A kind of thermoplastic polyurethane elastomer for solar cells and preparation method thereof

A technology of thermoplastic polyurethane and solar cells, which can be used in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as the attenuation of photoelectric conversion functions, and achieve the effects of speeding up the production process, high bonding strength, and good light transmission

Active Publication Date: 2017-08-29
DONGGUAN JIXIN POLYMER SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the silicon wafer is directly exposed to the atmosphere, its photoelectric conversion function will be attenuated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A thermoplastic polyurethane elastomer for solar cells, which is mainly prepared from the following raw materials in parts by weight:

[0031] 100 parts of polyester polyol

[0032] 60 parts of dicyclopentadienol type epoxy resin

[0033] Aliphatic diisocyanate

[0034] diol chain extender;

[0035] Wherein, the ratio of the amount of substances controlling the -OH group to the -NCO group is 1:1.2;

[0036] Control the weight average molecular weight of polyester polyol to be 10000.

[0037] Control the molecular weight distribution (Mw / Mn) of polyester polyol to be 1.

[0038] Control the weight average molecular weight of dicyclopentadienyl phenolic epoxy resin to be 500.

[0039] The preparation method of thermoplastic polyurethane elastomer for solar cell as above, described method comprises the steps:

[0040] The components are mixed according to the formulation amount, and a thermoplastic polyurethane elastomer for solar cells is obtained by a prepolymer me...

Embodiment 2

[0042] A TPU film for solar cells, which is mainly prepared from the following raw materials in parts by weight:

[0043] 100 parts of polyester polyol

[0044] 90 parts of dicyclopentadienyl phenol type epoxy resin

[0045] Aliphatic diisocyanate

[0046] diol chain extender;

[0047] Wherein, the ratio of the amount of substances controlling the -OH group to the -NCO group is 1:1.4;

[0048] Control the weight average molecular weight of polyester polyol to be 20000.

[0049] The molecular weight distribution (Mw / Mn) of the polyester polyol was controlled to be 2.4.

[0050] Control the weight average molecular weight of the dicyclopentadienyl phenolic epoxy resin to be 800.

[0051] The preparation method of thermoplastic polyurethane elastomer for solar cell as above, described method comprises the steps:

[0052] The components are mixed according to the formulation amount, and a thermoplastic polyurethane elastomer for solar cells is obtained by a prepolymer method...

Embodiment 3

[0054] A thermoplastic polyurethane elastomer for solar cells, which is mainly prepared from the following raw materials in parts by weight:

[0055] 100 parts of polyester polyol

[0056] 70 parts of dicyclopentadienyl phenol type epoxy resin

[0057] Aliphatic diisocyanate

[0058] diol chain extender;

[0059] Wherein, the ratio of the amount of substances controlling the -OH group to the -NCO group is 1:1.3;

[0060] Control the weight average molecular weight of polyester polyol to be 12000.

[0061] Control the molecular weight distribution (Mw / Mn) of polyester polyol to be 2.

[0062] Control the weight average molecular weight of the dicyclopentadienyl phenol type epoxy resin to be 600.

[0063]The raw material of the polyurethane also contains an anti-hydrolysis agent, and the anti-hydrolysis agent is selected from a mixture of carbodiimide, epoxy resin and silane coupling agent, and the mass ratio of the three is 1:2:4.

[0064] The preparation method of thermo...

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Abstract

The invention provides a thermoplastic polyurethane elastomer for solar cells. The elastomer is mainly prepared from raw materials in parts by weight as follows: 100 parts of polyester polyol, 60-90 parts of dicyclopentadiene phenol epoxy resin, aliphatic diisocyanate and a glycol chain extender, wherein the amount-of-substance ratio of -OH groups and -NCO groups is controlled in a range of 1:(1.2-1.4), the weight-average molecular weight of the polyester polyol is controlled in a range of 10000-20000, and the molecular weight distribution (Mw / Mn) of the polyester polyol is controlled in a range of 1-2.4. Compared with traditional EVA films, a TPU (thermoplastic polyurethane) film made of the thermoplastic polyurethane elastomer has the advantages of high transparency, good light transmission, capability of avoiding yellowing forever, high melting point and high bonding strength. Besides, when the film is used for producing the solar cells, crosslinking is not required, so that the production process of the solar cells can be accelerated.

Description

technical field [0001] The invention relates to a thermoplastic polyurethane elastomer for solar cells and a preparation method thereof. Background technique [0002] At present, the installed capacity of solar energy facilities in the world is growing almost exponentially, and it is extremely important to develop solar cell modules with higher power generation efficiency and production efficiency. If the silicon wafer is directly exposed to the atmosphere, its photoelectric conversion function will be attenuated. For this reason, it is necessary to use a transparent, aging-resistant, and good adhesive layer to encapsulate the silicon wafer, and bond it with the upper protective glass and the lower protective material TPT (polyvinyl fluoride composite film) to form a solar cell module. . [0003] The most basic function of the EVA film is to act as a bond and seal, that is, to isolate the silicon wafer from the atmosphere. At the same time, it can also play an anti-reflec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/58C08G18/42C08G18/32H01L31/048
CPCY02E10/50
Inventor 王一良何建雄
Owner DONGGUAN JIXIN POLYMER SCI & TECH
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