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Resin composition, master batch containing same, and application

A technology of resin composition and masterbatch, applied in adhesive additives, film/sheet adhesives, non-polymer adhesive additives, etc., can solve the problem of high light transmittance and good corrosion resistance of EVA film and other problems, to achieve the effect of low yellowing rate, good yellowing resistance, and improved corrosion resistance

Pending Publication Date: 2021-11-23
SUZHOU FIRST PV MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a resin composition, its masterbatch and its application, to solve the problem that the EVA adhesive film in the prior art cannot meet the requirements of high light transmittance and good corrosion resistance at the same time.

Method used

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  • Resin composition, master batch containing same, and application
  • Resin composition, master batch containing same, and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Form the raw material of resin composition: 100 parts by weight of base resin ethylene-vinyl acetate resin (DuPont), 0.05 parts by weight of organic base compound (7-methyl-1,5,7-triazabicyclo[4.4.0]decane -5-ene, pKa is 14.27), 0.2 parts by weight of crosslinking agent (tert-butyl peroxyisopropyl carbonate), 0.3 parts by weight of auxiliary crosslinking agent (trimethylolpropane trimethacrylate).

[0047] The preparation method is as follows: the above-mentioned raw materials are uniformly mixed, and a single-layer encapsulation adhesive film is obtained through the processes of pre-mixing, melt extruding, film casting, cooling, cutting and winding.

Embodiment 2

[0049] The difference from Example 1 is that the organic base compound is 2-vinyl-4,6-diamino-triazine (pKa is 14.2).

Embodiment 3

[0051] The difference from Example 1 is that the organic base compound is 1,5,7-triazabicyclo[4.4.0]dec-5-ene (pKa is 14.47).

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Abstract

The invention provides a resin composition, a master batch containing the same, and application. The resin composition comprises matrix resin, an organic alkali compound and a cross-linking agent, the pKa of the organic alkali compound at 25 DEG C is 7.4-14.5, and the weight ratio of the matrix resin to the organic alkali compound is 100: (0.01-3). When a specific content of guanidine compound is added, the light transmittance of an adhesive film formed by the resin composition can be improved, and meanwhile, the yellowing rate is relatively low. Meanwhile, as the guanidine compound has relatively strong alkalinity, the guanidine compound can react with acetic acid generated by Norrish type II deacetylation reaction of the ethylene-vinyl acetate copolymer (EVA) in the application process, so that the corrosion resistance of an adhesive film formed by the resin composition is improved. In conclusion, the adhesive film formed by adopting the resin composition has the advantages of good yellowing resistance, high light transmittance, corrosion resistance and the like.

Description

technical field [0001] The invention relates to the technical field of packaging adhesive films for solar cells, in particular to a resin composition, a masterbatch thereof, and applications. Background technique [0002] When photovoltaic modules are used under high temperature, high humidity and light conditions, moisture or water gradually penetrates into the module, and under the action of light and heat, ethylene-vinyl acetate copolymer (EVA) undergoes Norrish type II deacetylation reaction, resulting in acetic acid. In the presence of acetic acid, a potential difference is formed between the two metals of the tin-brazing strip, and the metal with the lower potential will be corroded. The standard electrode potentials of the two metals in the tin-coated copper strip are Sn 2+ : -0.136V, Pb 2+ : -0.126V, although the potentials of the two are similar, electrochemical corrosion may still occur to make the tin-coated brazing strip yellow. In addition, the acetic acid p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/08C09J11/06C09J11/04C09J7/30H01L31/048H01L33/56H01L51/52
CPCC09J123/0853C09J11/06C09J11/04C09J7/30H01L31/0481H01L33/56C08K2003/2206C08K2003/2224C08K2003/222C08K2201/014C08K2003/2241C08L2203/206C09J2301/408C09J2203/322H10K50/844C08K5/3462C08K5/3492C08K5/17C08K3/22C08K3/04Y02E10/50
Inventor 魏梦娟周光大侯宏兵
Owner SUZHOU FIRST PV MATERIAL CO LTD
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