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Adhesive for backboard of crystalline silicon cell and application of adhesive

A crystalline silicon battery and adhesive technology, applied in the directions of adhesives, adhesive additives, epoxy resin adhesives, etc., can solve the problems of delamination of the backplane, insufficient bonding strength of the adhesive, and affecting the aging resistance of components. Achieve the effect of solving heat-resistant oxygen aging and high bonding strength

Active Publication Date: 2015-01-07
HANGZHOU FIRST APPLIED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing adhesives have more or less defects. For example, the adhesive strength of the adhesive is not enough, it is difficult to make the PET film and the fluorine film in the backsheet closely bonded for a long time, which will lead to the use of solar cells. During the process, the backplane delamination phenomenon occurred
After the backplane is delaminated, it will directly affect the overall aging resistance of the entire component

Method used

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  • Adhesive for backboard of crystalline silicon cell and application of adhesive
  • Adhesive for backboard of crystalline silicon cell and application of adhesive
  • Adhesive for backboard of crystalline silicon cell and application of adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A new type of adhesive for crystalline silicon battery backsheet: it is composed of component A and component B, wherein component A is composed of 50wt% ST5790 hydroxyl polyester resin (Toyobo Japan), 10wt% ethylene glycol chain extender (Aladdin Reagent Company), 3wt% polycarbodiimide P200 hydrolysis stabilizer (Rhein Chemie), 0.05wt% 2,2'-methylene-bis-(4-methyl-6-tert-butyl) Phenol antioxidant (Nanjing Kangke Chemical Co., Ltd.), 0.15wt% p-toluenesulfonic acid catalyst (Hubei Shengtian Hengchuang Biotechnology Co., Ltd.), 36.8wt% ethyl acetate diluent mixed uniformly, component B consists of 30wt% Highly etherified hexamethylolmelamine resin (BASF, Germany) and 70wt% ethyl acetate diluent are evenly mixed; after mixing component A and component B uniformly at a weight ratio of 9:1, automatic continuous molding The process is uniformly coated on the surface of the PET film to be bonded, and the amount of glue applied is 5g / m 2 , after the solvent evaporates and drie...

Embodiment 2

[0044] A new type of adhesive for crystalline silicon battery backplane: it is composed of component A and component B, wherein component A is composed of 60wt% HS3303 alkyd resin (Shanghai Haoren Group), 5wt% trimethylolpropane extended Chain agent (Aladdin Reagent Company), 5wt% monomeric carbodiimide I powder hydrolysis stabilizer (Germany Rhein Chemie), 3wt% 3,5-di-tert-butyl-4-hydroxy-benzoic acid hexadecyl ester Antioxidant (Gansu Provincial Research Institute of Chemical Industry), 3wt% p-toluenesulfonic acid catalyst (Hubei Shengtian Hengchuang Biotechnology Co., Ltd.), 24wt% butyl acetate diluent mixed uniformly, component B is made of 50wt% moderate methyl ether Hexamethylolmelamine resin (BASF, Germany) and 50wt% ethyl acetate diluent are uniformly mixed; after mixing component A and component B uniformly at a weight ratio of 10:1, the coating is uniformly coated by automatic continuous molding process Covered on the surface of the PET film to be bonded, the amount ...

Embodiment 3

[0046]A new type of adhesive for crystalline silicon battery backplane: it is composed of component A and component B, wherein component A is composed of 50wt% A575 hydroxyacrylic resin (Bayer, Germany), 8wt% diethylene glycol chain extender agent (Aladdin Reagent Company), 3.6wt% polycarbodiimide P400 hydrolysis stabilizer (Rheinland Chemicals), 0.15wt% distearyl pentaerythritol diphosphite antioxidant (Hangzhou Jianghui Technology Co., Ltd.), 0.25wt% phthalic acid catalyst (Shenyang Xinguang Chemical Factory), 38wt% ethanol diluent mixed uniformly, component B is made of 40wt% highly butylated hexamethylol melamine resin (Cytec, USA), 60wt% Ethanol diluent is mixed evenly; after mixing component A and component B uniformly at a weight ratio of 9.5:1, it is evenly coated on the surface of the bonded material PET film through automatic continuous molding or batch process. 10g / m 2 After the solvent is evaporated and dried, stick a 30um thick fluorine film and put it into an ov...

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Abstract

The invention provides an adhesive for a backboard of a crystalline silicon cell. The adhesive is composed of a component A and a component B, wherein the component A comprises the following components in parts by weight: 40-60 parts of resin containing hydroxide radical or carboxyl radical, 5-10 parts of chain extender, 3-5 parts of hydrolytic stabilizer, 0.05-3 parts of antioxidant, 0.01-5 parts of catalyst and 18-50 parts of thinner 1; the component B comprises the following components in parts by weight: 30-50 parts of etherified trihydroxymethyl tripolycyanamide resin and 50-70 parts of thinner 2. The adhesive has the beneficial effects that the adhering strength on a PET (polyethylene terephthalate) film and two phase interfaces of other materials in the crystalline silicon backboard is high, the problems that an adhesive for the backboard of the crystalline silicon cell is poor in thermal oxidation aging resistance and water resistance is solved, and the adhesive provided by the invention is an excellent adhesive for the backboard of the crystalline silicon cell.

Description

(1) Technical field [0001] The invention relates to an adhesive for a crystalline silicon battery back plate and an application thereof. (2) Background technology [0002] In recent years, with the improvement of global mechanization and modernization, the demand for energy continues to increase. As an important part of renewable energy, the photovoltaic industry will become the main method to solve the global energy crisis. [0003] The special use environment of photovoltaic products puts forward higher requirements for its corresponding components, such as strict standards in terms of aging resistance, high and low temperature resistance, hydrolysis resistance, and breakdown resistance. Among them, the backsheet is one of the most important packaging materials in the production process of photovoltaic modules. The characteristics of the backsheet directly determine the appearance and service life of photovoltaic modules. [0004] Now there are backsheet products with v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J167/08C09J167/00C09J133/00C09J163/00C09J161/32C09J11/06C09J11/08
Inventor 林维红林国铖王波梅云宵周光大
Owner HANGZHOU FIRST APPLIED MATERIAL CO LTD