Method for producing resin composition for solar cell sealing material, resin composition for solar cell sealing material, solar cell sealing material, and solar cell module
A technology for solar cells and resin compositions, applied in the directions of sealing devices, chemical instruments and methods, circuits, etc., can solve the problems of quality degradation, time-consuming, uneven thickness of solar cell packaging material sheets, etc., and achieves low cost, The effect of shortened processing time and good storage stability
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Embodiment 1
[0149] 3600 parts of granulated ethylene-vinyl acetate copolymers (A-1) and 400 parts of crosslinking agent (B-1) are added to the agitator (manufactured by Co., Ltd. Kawata) with a heating device with a capacity of 20 L, controlled as 40° C. and mixing at 500 rpm for 30 minutes to produce pellets of the resin composition for solar cell encapsulation materials. About this pellet, the measurement of the impregnation yield of a crosslinking agent (B-1) was performed. And, storage stability evaluation, caking evaluation, and appearance evaluation of the pellets were performed.
[0150] In addition, using the pellets obtained by this impregnation method, a test sheet (solar cell encapsulating material sheet) having a thickness of 100 μm was produced at a processing temperature of 80° C. using an extrusion tester (manufactured by Toyo Seiki Co., Ltd.). The test sheet was used to measure the number of pellets and evaluate its transparency quality.
[0151] Based on the results of ...
Embodiment 2～7、 comparative example 1～7
[0153] Use the ethylene-vinyl acetate copolymer shown in Table 2 and the crosslinking agent, and set the impregnation processing conditions as shown in Table 2, except that, others are all according to the steps identical with embodiment 1, manufacture solar cell A resin composition pellet for encapsulation material, and a test sheet was prepared using the pellet. Thereafter, in the same manner as in Example 1, measurement, each evaluation, and overall evaluation as a resin composition for a solar cell encapsulating material were performed.
Embodiment 8
[0157] With the same steps and impregnation processing conditions as in Example 1, use 3200 parts of granular ethylene-vinyl acetate copolymer (A-1) and 800 parts of crosslinking agent (B-1), to manufacture solar cell encapsulation materials Resin composition pellets, using the pellets to prepare test sheets. Thereafter, in the same manner as in Example 1, measurement, each evaluation, and overall evaluation as a resin composition for a solar cell encapsulating material were performed.
[0158] Table 2 shows the raw material components, impregnation processing conditions, and evaluation results of Examples 1-8 and Comparative Examples 1-8.
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